/* roulang page: index */
:root {
            --bg: #f5f3ee;
            --bg-warm: #edebe4;
            --bg-card: #ffffff;
            --dark: #171717;
            --dark-2: #1e1e1e;
            --ink: #1b1b1b;
            --ink-2: #6e6a63;
            --ink-3: #8d8d8a;
            --line: #dedbd2;
            --accent: #ff4d00;
            --accent-hover: #e04400;
            --accent-soft: rgba(255, 77, 0, 0.08);
            --on-dark: #ffffff;
            --on-dark-2: #c9c6bf;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(23, 23, 23, 0.06);
            --shadow-lg: 0 12px 24px rgba(23, 23, 23, 0.10);
            --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --pad-pc: 40px;
            --pad-mobile: 20px;
            --nav-height: 72px;
            --transition: 0.2s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--bg);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            transition: all 0.15s ease;
        }

        input,
        textarea,
        select {
            font-family: var(--font);
            border-radius: 6px;
            border: 1px solid var(--line);
            padding: 10px 14px;
            font-size: 15px;
            transition: border-color var(--transition);
            outline: none;
            background: #fff;
            color: var(--ink);
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255, 77, 0, 0.15);
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: var(--pad-pc);
            padding-right: var(--pad-pc);
        }

        section {
            padding: 100px 0;
        }

        @media (max-width: 1023px) {
            .container {
                padding-left: 36px;
                padding-right: 36px;
            }
            section {
                padding: 80px 0;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: var(--pad-mobile);
                padding-right: var(--pad-mobile);
            }
            section {
                padding: 56px 0;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: transparent;
            transition: background 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            background: var(--dark);
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-logo-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.05em;
        }

        .brand-text {
            font-weight: 700;
            font-size: 20px;
            color: var(--dark);
            letter-spacing: -0.02em;
            transition: color var(--transition);
        }

        .site-header.scrolled .brand-text {
            color: #fff;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
        }

        .site-header.scrolled .nav-links a {
            color: var(--on-dark-2);
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .site-header.scrolled .nav-links a:hover {
            color: #fff;
        }

        .nav-links a.active {
            color: var(--accent);
            font-weight: 600;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--accent);
            transition: width 0.2s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: all 0.15s ease;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 77, 0, 0.25);
        }

        .btn-primary:active {
            background: #c93c00;
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            color: var(--ink);
            border: 1px solid var(--dark);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23, 23, 23, 0.10);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            border-color: #fff;
            color: var(--accent);
            transform: translateY(-1px);
        }

        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: none;
            color: var(--ink);
            font-size: 15px;
            font-weight: 500;
            padding: 4px 0;
            border-bottom: 1px solid var(--ink);
            border-radius: 0;
            transition: all 0.15s ease;
        }

        .btn-text:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 17px;
            font-weight: 600;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1002;
        }

        .hamburger span {
            width: 26px;
            height: 2px;
            background: var(--dark);
            transition: all 0.2s ease;
        }

        .site-header.scrolled .hamburger span {
            background: #fff;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            inset: 0;
            background: var(--dark);
            z-index: 1001;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.25s ease;
        }

        .mobile-menu.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu a {
            font-size: 26px;
            font-weight: 600;
            color: #fff;
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 0.25s ease, transform 0.25s ease, color 0.15s;
        }

        .mobile-menu.open a {
            opacity: 1;
            transform: translateY(0);
        }

        .mobile-menu a:hover {
            color: var(--accent);
        }

        .mobile-menu a.active {
            color: var(--accent);
        }

        .mobile-menu .btn {
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 0.25s ease 0.2s, transform 0.25s ease 0.2s;
        }

        .mobile-menu.open .btn {
            opacity: 1;
            transform: translateY(0);
        }

        .mobile-menu-close {
            position: absolute;
            top: 24px;
            right: 24px;
            background: none;
            border: none;
            color: #fff;
            font-size: 32px;
            cursor: pointer;
            line-height: 1;
            padding: 4px;
        }

        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 92vh;
            display: flex;
            align-items: center;
            position: relative;
            padding: calc(var(--nav-height) + 40px) 0 80px;
            background: var(--dark);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.55;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(23, 23, 23, 0.55);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 77, 0, 0.18);
            color: var(--accent);
            border: 1px solid rgba(255, 77, 0, 0.35);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.02em;
        }

        .hero-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 1.6s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }

        .hero h1 {
            font-size: 64px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 24px;
        }

        .hero h1 em {
            font-style: normal;
            color: var(--accent);
        }

        .hero-subtitle {
            font-size: 20px;
            line-height: 1.7;
            color: var(--on-dark-2);
            margin-bottom: 36px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-tip {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 28px;
            color: var(--on-dark-2);
            font-size: 14px;
        }

        .hero-tip strong {
            color: var(--accent);
            font-weight: 600;
        }

        .hero-sticker {
            position: absolute;
            right: 40px;
            bottom: 60px;
            z-index: 2;
            background: var(--accent);
            color: #fff;
            border-radius: 50%;
            width: 100px;
            height: 100px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            transform: rotate(-8deg);
            box-shadow: 0 16px 40px rgba(255, 77, 0, 0.35);
        }

        .hero-sticker span:first-child {
            font-size: 13px;
            letter-spacing: 0.1em;
            text-transform: uppercase;
        }

        .hero-sticker span:last-child {
            font-size: 28px;
            line-height: 1.1;
        }

        @media (max-width: 1023px) {
            .hero h1 {
                font-size: 48px;
            }
            .hero-sticker {
                width: 80px;
                height: 80px;
                right: 28px;
            }
            .hero-sticker span:last-child {
                font-size: 22px;
            }
        }

        @media (max-width: 767px) {
            .hero {
                min-height: auto;
                padding-top: calc(var(--nav-height) + 32px);
                padding-bottom: 64px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-subtitle {
                font-size: 17px;
            }
            .hero-sticker {
                display: none;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Trust Bar ===== */
        .trust-bar {
            padding: 32px 0;
            background: #fff;
            border-bottom: 1px solid var(--line);
        }

        .trust-bar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .trust-item {
            text-align: center;
            padding: 8px 12px;
        }

        .trust-item .num {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--dark);
            letter-spacing: -0.02em;
        }

        .trust-item .num span {
            color: var(--accent);
        }

        .trust-item .label {
            font-size: 14px;
            color: var(--ink-2);
            margin-top: 4px;
            font-weight: 500;
        }

        @media (max-width: 767px) {
            .trust-bar-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .trust-item .num {
                font-size: 32px;
            }
        }

        /* ===== Section Header ===== */
        .section-head {
            margin-bottom: 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 650;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--ink-2);
            max-width: 620px;
            line-height: 1.75;
        }

        @media (max-width: 767px) {
            .section-head h2 {
                font-size: 26px;
            }
            .section-head {
                margin-bottom: 36px;
            }
        }

        /* ===== Selling Points ===== */
        .points-section {
            background: var(--bg);
        }

        .points-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .point-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
        }

        .point-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: #c9c6bf;
        }

        .point-card.type-number .point-num {
            font-size: 52px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 16px;
            letter-spacing: -0.04em;
        }

        .point-card.type-icon .point-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--dark);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 16px;
        }

        .point-card.type-underline {
            border-top: 4px solid var(--accent);
            border-radius: var(--radius-sm);
        }

        .point-card h3 {
            font-size: 21px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .point-card p {
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.75;
        }

        .point-card .point-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            margin-top: 20px;
            border-bottom: 1px solid var(--dark);
            padding-bottom: 2px;
            transition: all 0.15s ease;
        }

        .point-card .point-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        @media (max-width: 1023px) {
            .points-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .points-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .point-card {
                padding: 24px 20px;
            }
        }

        /* ===== Focus Topics ===== */
        .topics-section {
            background: #fff;
        }

        .topics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .topic-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            cursor: pointer;
            aspect-ratio: 3/4;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
        }

        .topic-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .topic-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .topic-card:hover img {
            transform: scale(1.04);
        }

        .topic-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(23, 23, 23, 0.85) 0%, rgba(23, 23, 23, 0.2) 50%, transparent 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 20px;
        }

        .topic-card-overlay h3 {
            font-size: 19px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }

        .topic-card-overlay p {
            font-size: 13px;
            color: var(--on-dark-2);
            line-height: 1.5;
        }

        @media (max-width: 1023px) {
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .topics-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .topic-card {
                aspect-ratio: 16/9;
            }
        }

        /* ===== Scenes ===== */
        .scenes-section {
            background: var(--bg);
        }

        .scene-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 48px 0;
            border-bottom: 1px solid var(--line);
        }

        .scene-block:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .scene-block:first-child {
            padding-top: 0;
        }

        .scene-block.reverse .scene-image {
            order: 2;
        }

        .scene-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s ease;
        }

        .scene-image:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .scene-image img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        .scene-content h3 {
            font-size: 28px;
            font-weight: 650;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .scene-content p {
            font-size: 16px;
            color: var(--ink-2);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .scene-content .scene-tag-inline {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 16px;
        }

        @media (max-width: 1023px) {
            .scene-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .scene-block.reverse .scene-image {
                order: 0;
            }
            .scene-content h3 {
                font-size: 24px;
            }
        }

        /* ===== Ranking ===== */
        .ranking-section {
            background: #fff;
        }

        .ranking-table {
            width: 100%;
            border-collapse: collapse;
        }

        .ranking-table th {
            text-align: left;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--ink-3);
            padding: 12px 16px;
            border-bottom: 1px solid var(--line);
        }

        .ranking-table td {
            padding: 16px;
            border-bottom: 1px solid var(--line);
            font-size: 15px;
            color: var(--ink);
        }

        .ranking-table tr:last-child td {
            border-bottom: none;
        }

        .ranking-table tr {
            transition: background 0.15s ease;
        }

        .ranking-table tr:hover {
            background: var(--accent-soft);
        }

        .rank-num {
            font-weight: 700;
            font-size: 18px;
            color: var(--dark);
            width: 48px;
        }

        .rank-num.top {
            color: var(--accent);
        }

        .rank-title {
            font-weight: 600;
            color: var(--dark);
        }

        .rank-metric {
            font-weight: 600;
            color: var(--accent);
            text-align: right;
        }

        .rank-label {
            font-size: 13px;
            color: var(--ink-3);
        }

        @media (max-width: 767px) {
            .ranking-table {
                font-size: 13px;
            }
            .ranking-table th,
            .ranking-table td {
                padding: 10px 8px;
            }
            .rank-num {
                width: 36px;
                font-size: 15px;
            }
        }

        /* ===== Brand Intro ===== */
        .brand-section {
            background: var(--dark);
            color: var(--on-dark-2);
            padding: 80px 0;
        }

        .brand-section .container {
            max-width: 800px;
        }

        .brand-section h2 {
            font-size: 32px;
            font-weight: 650;
            color: #fff;
            margin-bottom: 24px;
            letter-spacing: -0.01em;
        }

        .brand-section p {
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 16px;
            color: var(--on-dark-2);
        }

        .brand-section .brand-highlight {
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== Deep Content ===== */
        .deep-content {
            background: var(--bg);
        }

        .deep-content .container {
            max-width: 760px;
        }

        .deep-content h2 {
            font-size: 30px;
            font-weight: 650;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
            letter-spacing: -0.01em;
        }

        .deep-content h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--dark);
            margin: 32px 0 12px;
        }

        .deep-content p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--ink-2);
            margin-bottom: 16px;
        }

        .deep-content strong {
            color: var(--dark);
            font-weight: 600;
        }

        .deep-content ul {
            list-style: none;
            padding-left: 0;
            margin: 20px 0;
        }

        .deep-content ul li {
            padding-left: 24px;
            position: relative;
            margin-bottom: 12px;
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink-2);
        }

        .deep-content ul li::before {
            content: '—';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 600;
        }

        .deep-content .content-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin: 32px 0;
            box-shadow: var(--shadow-sm);
            transition: filter 0.25s ease;
        }

        .deep-content .content-image:hover {
            filter: grayscale(0.35);
        }

        .deep-content .content-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .deep-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 20px 28px;
            margin: 28px 0;
            background: #fff;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: normal;
            font-size: 17px;
            line-height: 1.8;
            color: var(--dark);
            box-shadow: var(--shadow-sm);
        }

        .deep-content blockquote cite {
            display: block;
            margin-top: 8px;
            font-size: 14px;
            color: var(--ink-3);
            font-style: normal;
        }

        /* ===== News ===== */
        .news-section {
            background: #fff;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: grid;
            grid-template-columns: 180px 1fr auto;
            gap: 24px;
            padding: 24px 0;
            border-bottom: 1px solid var(--line);
            align-items: center;
            transition: background 0.15s ease;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: var(--accent-soft);
            border-radius: var(--radius-sm);
            padding-left: 12px;
            padding-right: 12px;
        }

        .news-item-image {
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/10;
        }

        .news-item-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-item-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-item-content .news-date {
            font-size: 13px;
            color: var(--ink-3);
            margin-bottom: 8px;
            font-weight: 500;
        }

        .news-item-content p {
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.65;
        }

        .news-item .btn-text {
            white-space: nowrap;
        }

        @media (max-width: 1023px) {
            .news-item {
                grid-template-columns: 140px 1fr;
            }
            .news-item .btn-text {
                grid-column: 2;
                justify-self: start;
            }
        }

        @media (max-width: 767px) {
            .news-item {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .news-item .btn-text {
                grid-column: 1;
            }
            .news-item-image {
                max-width: 100%;
            }
        }

        /* ===== Social Proof ===== */
        .social-proof {
            background: var(--bg);
        }

        .proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .proof-item {
            text-align: center;
            padding: 28px 16px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
        }

        .proof-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .proof-item .proof-num {
            font-size: 42px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.1;
            letter-spacing: -0.03em;
        }

        .proof-item .proof-label {
            font-size: 14px;
            color: var(--ink-2);
            margin-top: 8px;
            font-weight: 500;
        }

        @media (max-width: 1023px) {
            .proof-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .proof-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .proof-item .proof-num {
                font-size: 30px;
            }
        }

        /* ===== Limited Entry ===== */
        .limited-section {
            background: var(--dark);
            padding: 72px 0;
        }

        .limited-banner {
            background: rgba(255, 77, 0, 0.08);
            border: 1px solid rgba(255, 77, 0, 0.25);
            border-radius: var(--radius-md);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .limited-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .limited-countdown {
            display: flex;
            gap: 12px;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            text-align: center;
            min-width: 64px;
        }

        .countdown-item .cd-num {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .countdown-item .cd-label {
            font-size: 12px;
            color: var(--on-dark-2);
            letter-spacing: 0.04em;
        }

        .limited-text h3 {
            font-size: 24px;
            font-weight: 650;
            color: #fff;
            margin-bottom: 6px;
        }

        .limited-text p {
            font-size: 15px;
            color: var(--on-dark-2);
        }

        @media (max-width: 767px) {
            .limited-banner {
                flex-direction: column;
                text-align: center;
                padding: 24px 20px;
            }
            .limited-left {
                flex-direction: column;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--accent);
            padding: 72px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }

        .cta-section .btn {
            background: #fff;
            color: var(--accent);
            font-weight: 600;
            font-size: 17px;
            padding: 16px 36px;
        }

        .cta-section .btn:hover {
            background: var(--dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 16px 32px rgba(23, 23, 23, 0.3);
        }

        @media (max-width: 767px) {
            .cta-section h2 {
                font-size: 26px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: var(--on-dark-2);
            padding: 60px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--on-dark-2);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--on-dark-2);
            transition: color 0.15s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--on-dark-2);
            line-height: 1.6;
        }

        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom .footer-links a {
            font-size: 13px;
            color: var(--on-dark-2);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .footer-bottom .footer-links a:hover {
            color: var(--accent);
        }

        .footer-bottom .icp-line {
            font-size: 13px;
            color: var(--ink-3);
        }

        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                text-align: center;
            }
            .footer-bottom .footer-links {
                justify-content: center;
            }
        }

        /* ===== Floating CTA ===== */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 950;
            background: var(--dark);
            border-top: 2px solid var(--accent);
            padding: 12px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            box-shadow: 0 -8px 24px rgba(23, 23, 23, 0.15);
        }

        .floating-cta.show {
            transform: translateY(0);
        }

        .floating-cta p {
            font-size: 16px;
            color: #fff;
            font-weight: 500;
        }

        .floating-cta p strong {
            color: var(--accent);
        }

        .floating-cta .btn {
            padding: 10px 24px;
            font-size: 14px;
            white-space: nowrap;
        }

        @media (max-width: 479px) {
            .floating-cta {
                padding: 8px 16px;
            }
            .floating-cta p {
                font-size: 13px;
            }
            .floating-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
                width: 50%;
            }
        }

        /* ===== Reveal Animations ===== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.55s ease, transform 0.55s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            .floating-cta {
                transition: none;
            }
        }

/* roulang page: category3 */
:root {
            --bg: #f5f3ee;
            --bg-warm: #edebe4;
            --bg-card: #ffffff;
            --dark: #171717;
            --dark-2: #1e1e1e;
            --ink: #1b1b1b;
            --ink-2: #6e6a63;
            --ink-3: #8d8d8a;
            --line: #dedbd2;
            --accent: #ff4d00;
            --accent-hover: #e04400;
            --accent-soft: rgba(255, 77, 0, 0.08);
            --on-dark: #ffffff;
            --on-dark-2: #c9c6bf;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(23, 23, 23, 0.06);
            --shadow-lg: 0 12px 24px rgba(23, 23, 23, 0.10);
            --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --pad-pc: 40px;
            --pad-mobile: 20px;
            --nav-height: 72px;
            --transition: 0.2s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--bg);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            transition: all 0.15s ease;
        }

        input,
        textarea,
        select {
            font-family: var(--font);
            border-radius: 6px;
            border: 1px solid var(--line);
            padding: 10px 14px;
            font-size: 15px;
            transition: border-color var(--transition);
            outline: none;
            background: #fff;
            color: var(--ink);
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255, 77, 0, 0.15);
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: var(--pad-pc);
            padding-right: var(--pad-pc);
        }

        section {
            padding: 100px 0;
        }

        .container {
            padding-left: 36px;
            padding-right: 36px;
        }

        section {
            padding: 80px 0;
        }

        .container {
            padding-left: var(--pad-mobile);
            padding-right: var(--pad-mobile);
        }

        section {
            padding: 56px 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: transparent;
            transition: background 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            background: var(--dark);
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-logo-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.05em;
        }

        .brand-text {
            font-weight: 700;
            font-size: 20px;
            color: var(--dark);
            letter-spacing: -0.02em;
            transition: color var(--transition);
        }

        .site-header.scrolled .brand-text {
            color: #fff;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
        }

        .site-header.scrolled .nav-links a {
            color: var(--on-dark-2);
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .site-header.scrolled .nav-links a:hover {
            color: #fff;
        }

        .nav-links a.active {
            color: var(--accent);
            font-weight: 600;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--accent);
            transition: width 0.2s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: all 0.15s ease;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-lg);
        }

        .btn-primary:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary:active {
            background: var(--accent-hover);
            transform: translateY(0);
        }

        .btn-outline {
            border: 1px solid var(--dark);
            color: var(--dark);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-text {
            color: var(--dark);
            border-bottom: 1px solid var(--dark);
            padding: 2px 0;
            font-size: 15px;
            font-weight: 500;
        }

        .btn-text:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .btn-white {
            background: #fff;
            color: var(--dark);
        }

        .btn-white:hover {
            background: var(--on-dark-2);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        /* Hamburger menu */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--dark);
            transition: all 0.25s ease;
            border-radius: 2px;
        }

        .site-header.scrolled .hamburger span {
            background: #fff;
        }

        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--dark);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.25s ease;
        }

        .mobile-menu-overlay.open {
            display: flex;
            opacity: 1;
        }

        .mobile-menu-overlay .mobile-nav-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 24px;
            text-align: center;
        }

        .mobile-menu-overlay .mobile-nav-links a {
            font-size: 24px;
            font-weight: 500;
            color: #fff;
            padding: 8px 16px;
        }

        .mobile-menu-overlay .mobile-nav-links a:hover {
            color: var(--accent);
        }

        .mobile-menu-overlay .mobile-nav-links a.active {
            color: var(--accent);
        }

        /* ===== Page Header (inner pages) ===== */
        .page-header {
            padding-top: calc(var(--nav-height) + 60px);
            padding-bottom: 60px;
            background: var(--bg-warm);
            border-bottom: 1px solid var(--line);
        }

        .page-header h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.02em;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .page-header .breadcrumb {
            font-size: 14px;
            color: var(--ink-2);
            margin-bottom: 16px;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .page-header .breadcrumb a {
            color: var(--ink-2);
            transition: color var(--transition);
        }

        .page-header .breadcrumb a:hover {
            color: var(--accent);
        }

        .page-header .intro {
            font-size: 17px;
            color: var(--ink-2);
            max-width: 700px;
            line-height: 1.8;
        }

        /* ===== Data Hero Stats Banner ===== */
        .data-stats-banner {
            background: var(--dark);
            padding: 56px 0;
            border-bottom: 3px solid var(--accent);
        }

        .data-stats-banner .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            transition: all 0.2s ease;
        }

        .stat-item:hover {
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        .stat-item .stat-number {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.1;
            color: var(--accent);
            letter-spacing: -0.02em;
        }

        .stat-item .stat-label {
            font-size: 15px;
            color: var(--on-dark-2);
            margin-top: 8px;
        }

        /* ===== Chart Section ===== */
        .chart-section {
            background: var(--bg);
        }

        .chart-section .section-header {
            margin-bottom: 40px;
        }

        .chart-section .section-header h2 {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .chart-section .section-header p {
            font-size: 16px;
            color: var(--ink-2);
            max-width: 650px;
            line-height: 1.8;
        }

        .chart-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-bottom: 48px;
        }

        .chart-box {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }

        .chart-box h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .bar-chart {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .bar-chart .bar-row {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .bar-chart .bar-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-2);
            min-width: 80px;
            text-align: right;
        }

        .bar-chart .bar-track {
            flex: 1;
            height: 22px;
            background: var(--bg-warm);
            border-radius: 4px;
            overflow: hidden;
        }

        .bar-chart .bar-fill {
            height: 100%;
            background: var(--accent);
            border-radius: 4px;
            transition: width 0.6s ease;
        }

        .bar-chart .bar-fill.alt {
            background: var(--dark);
        }

        .bar-chart .bar-value {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            min-width: 40px;
        }

        .line-chart-placeholder {
            display: flex;
            align-items: flex-end;
            gap: 12px;
            height: 180px;
            padding-top: 16px;
            border-bottom: 1px solid var(--line);
        }

        .line-chart-placeholder .line-bar {
            flex: 1;
            background: var(--dark);
            border-radius: 4px 4px 0 0;
            min-height: 20px;
            transition: height 0.5s ease;
        }

        .line-chart-placeholder .line-bar.highlight {
            background: var(--accent);
        }

        .chart-note {
            font-size: 14px;
            color: var(--ink-3);
            margin-top: 16px;
            padding-top: 12px;
            border-top: 1px solid var(--line);
        }

        /* ===== Data Cards ===== */
        .data-cards-section {
            background: var(--bg-warm);
        }

        .data-cards-section .section-header {
            margin-bottom: 40px;
        }

        .data-cards-section .section-header h2 {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .data-cards-section .section-header p {
            font-size: 16px;
            color: var(--ink-2);
            max-width: 650px;
            line-height: 1.8;
        }

        .data-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .data-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s ease;
            display: flex;
            flex-direction: column;
        }

        .data-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }

        .data-card .data-value {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.1;
            color: var(--accent);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .data-card .data-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .data-card .data-desc {
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.7;
        }

        /* ===== Interpretation Section ===== */
        .interpretation-section {
            background: var(--bg);
        }

        .interpretation-section .section-header {
            margin-bottom: 32px;
        }

        .interpretation-section .section-header h2 {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .interpretation-section .section-header p {
            font-size: 16px;
            color: var(--ink-2);
            max-width: 700px;
            line-height: 1.8;
        }

        .interpretation-content {
            max-width: 760px;
            line-height: 1.85;
            color: var(--ink);
            font-size: 17px;
        }

        .interpretation-content p {
            margin-bottom: 20px;
        }

        .interpretation-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--dark);
            margin: 32px 0 12px;
        }

        .interpretation-content ul {
            margin: 16px 0 20px 24px;
            list-style: disc;
            color: var(--ink-2);
        }

        .interpretation-content li {
            margin-bottom: 8px;
        }

        /* ===== Cover Image Section ===== */
        .cover-image-section {
            background: var(--bg-warm);
            padding: 60px 0;
        }

        .cover-image-section .cover-wrapper {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .cover-image-section .cover-wrapper img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        .cover-image-section .cover-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(23, 23, 23, 0.7));
            padding: 40px 32px 24px;
            color: #fff;
        }

        .cover-image-section .cover-overlay h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .cover-image-section .cover-overlay p {
            font-size: 15px;
            color: #e0ddd6;
            max-width: 600px;
        }

        /* ===== Bottom CTA ===== */
        .bottom-cta {
            background: var(--dark);
            padding: 72px 0;
            text-align: center;
            border-top: 2px solid var(--accent);
        }

        .bottom-cta h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .bottom-cta p {
            font-size: 17px;
            color: var(--on-dark-2);
            margin-bottom: 28px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: var(--on-dark-2);
            padding: 64px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .site-footer .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 280px;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .site-footer .footer-col a {
            font-size: 14px;
            color: var(--on-dark-2);
            transition: color var(--transition);
        }

        .site-footer .footer-col a:hover {
            color: var(--accent);
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 13px;
            color: var(--on-dark-2);
        }

        .site-footer .footer-bottom p {
            font-size: 13px;
            line-height: 1.5;
        }

        .site-footer .footer-bottom .icp-line {
            font-size: 13px;
            color: var(--on-dark-2);
        }

        .site-footer .footer-links {
            display: flex;
            gap: 20px;
            margin-top: 8px;
        }

        .site-footer .footer-links a {
            font-size: 13px;
            color: var(--on-dark-2);
            transition: color var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: var(--accent);
        }

        /* ===== Scroll reveal ===== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Fixed Bottom Bar ===== */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: var(--dark);
            border-top: 2px solid var(--accent);
            padding: 14px 24px;
            display: none;
            align-items: center;
            justify-content: space-between;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.2);
        }

        .fixed-bottom-bar.visible {
            display: flex;
            transform: translateY(0);
        }

        .fixed-bottom-bar .bar-text {
            color: #fff;
            font-size: 16px;
            font-weight: 500;
        }

        .fixed-bottom-bar .bar-btn {
            background: var(--accent);
            color: #fff;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            white-space: nowrap;
        }

        .fixed-bottom-bar .bar-btn:hover {
            background: var(--accent-hover);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding-left: 36px;
                padding-right: 36px;
            }
            section {
                padding: 80px 0;
            }
            .page-header h1 {
                font-size: 36px;
            }
            .data-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-stats-banner .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .chart-layout {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: var(--pad-mobile);
                padding-right: var(--pad-mobile);
            }
            section {
                padding: 56px 0;
            }
            .page-header {
                padding-top: calc(var(--nav-height) + 30px);
                padding-bottom: 36px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .data-stats-banner .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
            .data-cards-grid {
                grid-template-columns: 1fr;
            }
            .chart-layout {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cover-image-section .cover-wrapper img {
                height: 220px;
            }
            .bottom-cta h2 {
                font-size: 26px;
            }
            .fixed-bottom-bar .bar-text {
                font-size: 13px;
            }
            .fixed-bottom-bar .bar-btn {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .page-header h1 {
                font-size: 24px;
            }
            .data-stats-banner .stats-grid {
                grid-template-columns: 1fr;
            }
            .fixed-bottom-bar {
                padding: 10px 12px;
            }
            .fixed-bottom-bar .bar-btn {
                padding: 6px 12px;
                font-size: 12px;
                width: 50%;
                text-align: center;
            }
            .bar-chart .bar-label {
                min-width: 56px;
                font-size: 12px;
            }
            .bar-chart .bar-value {
                min-width: 30px;
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root {
  --bg: #f5f3ee;
  --bg-warm: #edebe4;
  --bg-card: #ffffff;
  --dark: #171717;
  --dark-2: #1e1e1e;
  --ink: #1b1b1b;
  --ink-2: #6e6a63;
  --ink-3: #8d8d8a;
  --line: #dedbd2;
  --accent: #ff4d00;
  --accent-hover: #e04400;
  --accent-soft: rgba(255, 77, 0, 0.08);
  --on-dark: #ffffff;
  --on-dark-2: #c9c6bf;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(23, 23, 23, 0.06);
  --shadow-lg: 0 12px 24px rgba(23, 23, 23, 0.10);
  --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  --container: 1200px;
  --pad-pc: 40px;
  --pad-mobile: 20px;
  --nav-height: 72px;
  --transition: 0.2s ease;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  background: none;
  transition: all 0.15s ease;
}
input,
textarea,
select {
  font-family: var(--font);
  border-radius: 6px;
  border: 1px solid var(--line);
  padding: 10px 14px;
  font-size: 15px;
  transition: border-color var(--transition);
  outline: none;
  background: #fff;
  color: var(--ink);
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 77, 0, 0.15);
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad-pc);
  padding-right: var(--pad-pc);
}
section {
  padding: 80px 0;
}
@media (max-width: 1023px) {
  .container {
    padding-left: 36px;
    padding-right: 36px;
  }
  section {
    padding: 64px 0;
  }
}
@media (max-width: 767px) {
  .container {
    padding-left: var(--pad-mobile);
    padding-right: var(--pad-mobile);
  }
  section {
    padding: 48px 0;
  }
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: transparent;
  transition: background 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  align-items: center;
}
.site-header.scrolled {
  background: var(--dark);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo-icon {
  width: 42px;
  height: 42px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.05em;
}
.brand-text {
  font-weight: 700;
  font-size: 20px;
  color: #fff;
  letter-spacing: -0.02em;
  transition: color var(--transition);
}
.site-header:not(.scrolled) .brand-text {
  color: #fff;
}
.site-header.scrolled .brand-text {
  color: #fff;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  padding: 4px 0;
  position: relative;
  transition: color var(--transition);
}
.site-header.scrolled .nav-links a {
  color: var(--on-dark-2);
}
.nav-links a:hover {
  color: #fff;
}
.nav-links a.active {
  color: var(--accent);
  font-weight: 600;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.2s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-cta {
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  transition: all 0.15s ease;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 77, 0, 0.35);
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}
.btn-outline:hover {
  border-color: #fff;
  transform: translateY(-1px);
}
.btn-text {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding: 4px 0;
  font-size: 14px;
  font-weight: 500;
}
.btn-text:hover {
  color: var(--accent-hover);
  border-color: var(--accent-hover);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1002;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: all 0.25s ease;
}
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--dark);
  z-index: 1001;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  font-size: 24px;
  font-weight: 600;
  color: #fff;
  transition: color var(--transition);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--accent);
}
@media (max-width: 767px) {
  .nav-links {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--dark);
  padding: calc(var(--nav-height) + 40px) 0 60px;
}
.article-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}
.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(23, 23, 23, 0.92) 0%, rgba(23, 23, 23, 0.55) 55%, rgba(23, 23, 23, 0.35) 100%);
}
.article-hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--on-dark-2);
  margin-bottom: 20px;
}
.article-breadcrumb a {
  color: var(--on-dark-2);
}
.article-breadcrumb a:hover {
  color: #fff;
}
.article-breadcrumb .sep {
  color: rgba(255, 255, 255, 0.35);
}
.article-hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 850px;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--on-dark-2);
}
.article-meta .meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}
.article-meta .meta-tag {
  display: inline-block;
  background: rgba(255, 77, 0, 0.18);
  color: #ff8f5e;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}
@media (max-width: 1023px) {
  .article-hero h1 {
    font-size: 38px;
  }
}
@media (max-width: 767px) {
  .article-hero {
    min-height: 55vh;
    padding: calc(var(--nav-height) + 20px) 0 40px;
  }
  .article-hero h1 {
    font-size: 28px;
    line-height: 1.3;
  }
  .article-meta {
    gap: 10px;
    font-size: 12px;
  }
}

/* ===== Article Body ===== */
.article-body-section {
  padding: 60px 0;
  background: var(--bg);
}
.article-body-wrap {
  max-width: 760px;
  margin: 0 auto;
}
.article-body-wrap h2 {
  font-size: 28px;
  font-weight: 650;
  line-height: 1.3;
  color: var(--ink);
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
}
.article-body-wrap h2:first-child {
  margin-top: 0;
}
.article-body-wrap p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
  margin-bottom: 20px;
}
.article-body-wrap p strong {
  color: var(--ink);
  font-weight: 600;
}
.article-body-wrap .lead-text {
  font-size: 18px;
  line-height: 1.8;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 28px;
}
.article-image {
  margin: 32px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.article-image img {
  width: 100%;
  object-fit: cover;
  transition: transform 0.3s ease, filter 0.3s ease;
}
.article-image:hover img {
  transform: scale(1.01);
  filter: grayscale(20%);
}
.article-image figcaption {
  background: #fff;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--ink-3);
  border-top: 1px solid var(--line);
}
.article-quote {
  margin: 40px 0;
  padding: 24px 28px;
  background: #fff;
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-sm);
}
.article-quote p {
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 8px;
}
.article-quote cite {
  font-style: normal;
  font-size: 13px;
  color: var(--ink-3);
}
.article-data-block {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 40px 0;
}
.article-data-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.article-data-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.article-data-item .data-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.article-data-item .data-label {
  font-size: 13px;
  color: var(--ink-3);
  margin-top: 8px;
  line-height: 1.5;
}
@media (max-width: 767px) {
  .article-body-wrap h2 {
    font-size: 22px;
  }
  .article-body-wrap .lead-text {
    font-size: 16px;
  }
  .article-data-block {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .article-data-item .data-num {
    font-size: 28px;
  }
}

/* ===== Related Articles ===== */
.related-section {
  background: var(--bg-warm);
  padding: 64px 0;
}
.related-section .section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 32px;
}
.related-section .section-head h2 {
  font-size: 28px;
  font-weight: 650;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.related-section .section-head a {
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}
.related-section .section-head a:hover {
  color: var(--accent-hover);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.related-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.related-card-body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-card-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: 10px;
}
.related-card-body p {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 14px;
}
.related-card-body .btn-text {
  align-self: flex-start;
}
@media (max-width: 1023px) {
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 767px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-section .section-head h2 {
    font-size: 22px;
  }
}

/* ===== CTA Bottom ===== */
.cta-bottom {
  background: var(--dark);
  padding: 70px 0;
  text-align: center;
}
.cta-bottom h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.cta-bottom p {
  font-size: 16px;
  color: var(--on-dark-2);
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.cta-bottom .btn {
  font-size: 16px;
  padding: 14px 32px;
}
@media (max-width: 767px) {
  .cta-bottom h2 {
    font-size: 24px;
  }
}

/* ===== Fixed Bottom Bar ===== */
.fixed-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 990;
  background: var(--dark);
  border-top: 2px solid var(--accent);
  padding: 12px 20px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.fixed-bottom-bar.visible {
  transform: translateY(0);
}
.fixed-bottom-bar p {
  color: #fff;
  font-size: 15px;
  font-weight: 500;
}
.fixed-bottom-bar .btn {
  padding: 10px 20px;
  font-size: 14px;
  flex-shrink: 0;
}
@media (max-width: 479px) {
  .fixed-bottom-bar {
    flex-wrap: wrap;
    padding: 10px 14px;
    gap: 10px;
  }
  .fixed-bottom-bar p {
    font-size: 13px;
    flex: 1;
  }
  .fixed-bottom-bar .btn {
    width: 100%;
    padding: 10px 16px;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: var(--on-dark-2);
  padding: 56px 0 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-dark-2);
  max-width: 260px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul a {
  font-size: 13px;
  color: var(--on-dark-2);
  transition: color var(--transition);
}
.footer-col ul a:hover {
  color: #fff;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--on-dark-2);
}
.footer-bottom p {
  margin: 0;
}
.icp-line {
  font-size: 13px;
  color: var(--on-dark-2);
}
.footer-links {
  display: flex;
  gap: 16px;
}
.footer-links a {
  font-size: 13px;
  color: var(--on-dark-2);
}
.footer-links a:hover {
  color: #fff;
}
@media (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}
@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* roulang page: category1 */
:root {
            --bg: #f5f3ee;
            --bg-warm: #edebe4;
            --bg-card: #ffffff;
            --dark: #171717;
            --dark-2: #1e1e1e;
            --ink: #1b1b1b;
            --ink-2: #6e6a63;
            --ink-3: #8d8d8a;
            --line: #dedbd2;
            --accent: #ff4d00;
            --accent-hover: #e04400;
            --accent-soft: rgba(255, 77, 0, 0.08);
            --on-dark: #ffffff;
            --on-dark-2: #c9c6bf;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(23, 23, 23, 0.06);
            --shadow-lg: 0 12px 24px rgba(23, 23, 23, 0.10);
            --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --pad-pc: 40px;
            --pad-mobile: 20px;
            --nav-height: 72px;
            --transition: 0.2s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--bg);
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            transition: all 0.15s ease;
        }

        input,
        textarea,
        select {
            font-family: var(--font);
            border-radius: 6px;
            border: 1px solid var(--line);
            padding: 10px 14px;
            font-size: 15px;
            transition: border-color var(--transition);
            outline: none;
            background: #fff;
            color: var(--ink);
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255, 77, 0, 0.15);
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: var(--pad-pc);
            padding-right: var(--pad-pc);
        }

        section {
            padding: 72px 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: transparent;
            transition: background 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            background: var(--dark);
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            position: relative;
            z-index: 1001;
        }

        .brand-logo-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.05em;
            flex-shrink: 0;
        }

        .brand-text {
            font-weight: 700;
            font-size: 20px;
            color: var(--dark);
            letter-spacing: -0.02em;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .site-header.scrolled .brand-text {
            color: #fff;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }

        .site-header.scrolled .nav-links a {
            color: var(--on-dark-2);
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .site-header.scrolled .nav-links a:hover {
            color: #fff;
        }

        .nav-links a.active {
            color: var(--accent);
            font-weight: 600;
        }

        .site-header.scrolled .nav-links a.active {
            color: #fff;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.2s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: all 0.15s ease;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 77, 0, 0.25);
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.92);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--dark);
            color: var(--dark);
        }

        .btn-outline:hover {
            background: var(--dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23, 23, 23, 0.18);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-outline:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-text {
            color: var(--ink);
            font-size: 14px;
            font-weight: 500;
            padding: 6px 0;
            border-bottom: 1px solid var(--ink);
            border-radius: 0;
        }

        .btn-text:hover {
            border-bottom-color: var(--accent);
            color: var(--accent);
            transform: none;
            box-shadow: none;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        /* ===== Mobile Nav ===== */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border-radius: var(--radius-sm);
            position: relative;
            z-index: 1001;
            transition: background var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--dark);
            transition: all 0.25s ease;
            border-radius: 2px;
        }

        .site-header.scrolled .nav-toggle span {
            background: #fff;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: var(--dark);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.25s ease;
        }

        .mobile-overlay.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-overlay a {
            color: #fff;
            font-size: 24px;
            font-weight: 600;
            padding: 8px 20px;
            border-bottom: 1px solid transparent;
            transition: all 0.2s ease;
        }

        .mobile-overlay a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .mobile-overlay a.active {
            color: var(--accent);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--ink-2);
            padding: 16px 0;
            flex-wrap: wrap;
        }

        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb .sep {
            color: var(--ink-3);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--ink);
            font-weight: 500;
        }

        /* ===== Page Header ===== */
        .page-header {
            padding: 32px 0 28px;
        }

        .page-header .container {
            border-bottom: 1px solid var(--line);
            padding-bottom: 32px;
        }

        .page-header h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--ink);
            margin-bottom: 16px;
        }

        .page-header .lead {
            font-size: 17px;
            color: var(--ink-2);
            line-height: 1.8;
            max-width: 780px;
        }

        /* ===== Filter Bar ===== */
        .filter-section {
            padding: 24px 0 8px;
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            box-shadow: var(--shadow-sm);
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-2);
            margin-right: 4px;
        }

        .filter-chip {
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: var(--bg-warm);
            color: var(--ink-2);
            cursor: pointer;
            border: 1px solid transparent;
            transition: all 0.15s ease;
            white-space: nowrap;
        }

        .filter-chip:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .filter-chip.active {
            background: var(--dark);
            color: #fff;
            border-color: var(--dark);
        }

        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .filter-sort select {
            padding: 6px 12px;
            font-size: 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--line);
            background: #fff;
            color: var(--ink);
            cursor: pointer;
        }

        /* ===== News Grid ===== */
        .news-section {
            padding-top: 36px;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .news-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-warm);
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .news-card:hover .news-card-img img {
            transform: scale(1.03);
        }

        .news-card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent);
            background: var(--accent-soft);
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .news-card h2 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--ink);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .news-card .news-summary {
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--line);
            padding-top: 14px;
        }

        .news-date {
            font-size: 13px;
            color: var(--ink-3);
        }

        .news-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            border-bottom: 1px solid var(--ink);
            padding-bottom: 1px;
            transition: all 0.15s ease;
        }

        .news-link:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        /* ===== Pagination ===== */
        .pagination-section {
            padding: 40px 0 16px;
        }

        .pagination {
            display: flex;
            align-items: center;
            gap: 6px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .page-btn {
            min-width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--line);
            color: var(--ink);
            cursor: pointer;
            transition: all 0.15s ease;
        }

        .page-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .page-btn.active {
            background: var(--dark);
            color: #fff;
            border-color: var(--dark);
        }

        .page-btn.dots {
            border: none;
            background: transparent;
            cursor: default;
            color: var(--ink-3);
        }

        /* ===== Deep Content ===== */
        .deep-section {
            background: var(--bg-warm);
        }

        .deep-section .container {
            max-width: 820px;
        }

        .deep-article h2 {
            font-size: 28px;
            font-weight: 650;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .deep-article h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--ink);
            margin: 28px 0 14px;
        }

        .deep-article p {
            font-size: 16px;
            color: var(--ink-2);
            line-height: 1.9;
            margin-bottom: 18px;
        }

        .deep-article ul {
            margin: 0 0 20px 20px;
            list-style: none;
        }

        .deep-article ul li {
            font-size: 16px;
            color: var(--ink-2);
            line-height: 1.9;
            position: relative;
            padding-left: 18px;
            margin-bottom: 8px;
        }

        .deep-article ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 14px;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
        }

        /* ===== Stats Banner ===== */
        .stats-section {
            background: var(--dark);
            padding: 64px 0;
        }

        .stats-section .container {
            max-width: 1000px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-item {
            text-align: center;
        }

        .stat-num {
            font-size: 48px;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }

        .stat-num em {
            font-style: normal;
            color: var(--accent);
            font-size: 32px;
        }

        .stat-label {
            font-size: 15px;
            color: var(--on-dark-2);
            margin-top: 8px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 64px 0;
        }

        .cta-panel {
            background: var(--dark);
            border-radius: var(--radius-md);
            padding: 48px 56px;
            text-align: center;
        }

        .cta-panel h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-panel p {
            font-size: 16px;
            color: var(--on-dark-2);
            margin-bottom: 28px;
        }

        .cta-panel .btn {
            min-width: 180px;
        }

        /* ===== Mini FAQ ===== */
        .faq-section {
            background: var(--bg);
        }

        .faq-section .container {
            max-width: 800px;
        }

        .faq-section h2 {
            font-size: 28px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 28px;
            letter-spacing: -0.01em;
            text-align: center;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .faq-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            margin-bottom: 10px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item.open {
            border-left: 3px solid var(--accent);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 16px;
            font-weight: 550;
            color: var(--ink);
            cursor: pointer;
            text-align: left;
            transition: color 0.2s ease;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-icon {
            font-size: 20px;
            font-weight: 300;
            flex-shrink: 0;
            margin-left: 12px;
            transition: transform 0.25s ease;
            color: var(--ink-3);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease, padding 0.25s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.8;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: var(--on-dark);
            padding: 56px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--on-dark-2);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--on-dark-2);
            transition: color 0.15s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--on-dark-2);
        }

        .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--on-dark-2);
            transition: color 0.15s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-bottom .icp-line {
            font-size: 13px;
            color: var(--ink-3);
        }

        /* ===== Fixed Bottom CTA ===== */
        .fixed-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: var(--dark);
            border-top: 2px solid var(--accent);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transform: translateY(100%);
            transition: transform 0.3s ease;
        }

        .fixed-cta.visible {
            transform: translateY(0);
        }

        .fixed-cta-text {
            font-size: 15px;
            color: #fff;
            font-weight: 500;
        }

        .fixed-cta .btn {
            flex-shrink: 0;
            padding: 10px 20px;
            font-size: 14px;
        }

        /* ===== Scroll Reveal ===== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.55s ease, transform 0.55s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            .nav-links {
                gap: 18px;
            }
            .nav-links a {
                font-size: 14px;
            }
        }

        @media (max-width: 1024px) {
            .container {
                padding-left: 36px;
                padding-right: 36px;
            }
            section {
                padding: 56px 0;
            }
            .page-header h1 {
                font-size: 32px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding-left: var(--pad-mobile);
                padding-right: var(--pad-mobile);
            }
            section {
                padding: 44px 0;
            }
            .page-header h1 {
                font-size: 27px;
            }
            .page-header .lead {
                font-size: 15px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
            }
            .nav-cta .btn {
                display: none;
            }
            .mobile-overlay {
                display: flex;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-card-body {
                padding: 16px 18px 20px;
            }
            .news-card h2 {
                font-size: 17px;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                padding: 14px;
            }
            .filter-sort {
                margin-left: 0;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-num {
                font-size: 36px;
            }
            .cta-panel {
                padding: 32px 24px;
            }
            .cta-panel h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .fixed-cta {
                padding: 10px 16px;
                flex-wrap: wrap;
                gap: 10px;
            }
            .fixed-cta-text {
                font-size: 13px;
                flex: 1;
            }
            .fixed-cta .btn {
                flex: 1;
                min-width: 140px;
                padding: 8px 14px;
                font-size: 13px;
            }
            .deep-section .container {
                max-width: 100%;
            }
            .faq-section .container {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 24px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-num {
                font-size: 32px;
            }
            .stat-num em {
                font-size: 22px;
            }
            .stat-label {
                font-size: 13px;
            }
            .cta-panel {
                padding: 24px 18px;
            }
            .cta-panel h2 {
                font-size: 21px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .filter-chip {
                font-size: 12px;
                padding: 5px 10px;
            }
            .breadcrumb {
                font-size: 13px;
            }
        }

/* roulang page: category5 */
:root {
            --bg: #f5f3ee;
            --bg-warm: #edebe4;
            --bg-card: #ffffff;
            --dark: #171717;
            --dark-2: #1e1e1e;
            --ink: #1b1b1b;
            --ink-2: #6e6a63;
            --ink-3: #8d8d8a;
            --line: #dedbd2;
            --accent: #ff4d00;
            --accent-hover: #e04400;
            --accent-soft: rgba(255, 77, 0, 0.08);
            --on-dark: #ffffff;
            --on-dark-2: #c9c6bf;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(23, 23, 23, 0.06);
            --shadow-lg: 0 12px 24px rgba(23, 23, 23, 0.10);
            --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --pad-pc: 40px;
            --pad-mobile: 20px;
            --nav-height: 72px;
            --transition: 0.2s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--bg);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            transition: all 0.15s ease;
        }
        input,
        textarea,
        select {
            font-family: var(--font);
            border-radius: 6px;
            border: 1px solid var(--line);
            padding: 10px 14px;
            font-size: 15px;
            transition: border-color var(--transition);
            outline: none;
            background: #fff;
            color: var(--ink);
        }
        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255, 77, 0, 0.15);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: var(--pad-pc);
            padding-right: var(--pad-pc);
        }
        section {
            padding: 96px 0;
        }
        @media (max-width: 1023px) {
            .container {
                padding-left: 36px;
                padding-right: 36px;
            }
            section {
                padding: 72px 0;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding-left: var(--pad-mobile);
                padding-right: var(--pad-mobile);
            }
            section {
                padding: 56px 0;
            }
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: transparent;
            transition: background 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            align-items: center;
        }
        .site-header.scrolled {
            background: var(--dark);
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1100;
        }
        .brand-logo-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.05em;
            flex-shrink: 0;
        }
        .brand-text {
            font-weight: 700;
            font-size: 20px;
            color: #171717;
            letter-spacing: -0.02em;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .site-header.scrolled .brand-text {
            color: #fff;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: #171717;
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .site-header.scrolled .nav-links a {
            color: var(--on-dark-2);
        }
        .nav-links a:hover {
            color: var(--accent);
        }
        .site-header.scrolled .nav-links a:hover {
            color: #fff;
        }
        .nav-links a.active {
            color: var(--accent);
            font-weight: 600;
        }
        .site-header.scrolled .nav-links a.active {
            color: var(--accent);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--accent);
            transition: width 0.2s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            flex-shrink: 0;
            z-index: 1100;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: all 0.15s ease;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 16px rgba(255, 77, 0, 0.2);
        }
        .btn-primary:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary:active {
            background: #c93d00;
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid #171717;
            color: #171717;
        }
        .site-header.scrolled .btn-outline {
            border-color: #fff;
            color: #fff;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
            box-shadow: 0 8px 16px rgba(23, 23, 23, 0.08);
        }
        .btn-outline:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-text {
            background: none;
            color: #171717;
            padding: 6px 0;
            border-bottom: 1px solid #171717;
            border-radius: 0;
            font-size: 15px;
            font-weight: 500;
        }
        .btn-text:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            position: relative;
            z-index: 1100;
            cursor: pointer;
            background: none;
            border: none;
            flex-shrink: 0;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: #171717;
            margin: 4px auto;
            transition: all 0.25s ease;
            border-radius: 2px;
        }
        .site-header.scrolled .hamburger span {
            background: #fff;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: var(--dark);
            z-index: 1050;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            transition: opacity 0.25s ease;
        }
        .mobile-overlay.open {
            display: flex;
            opacity: 1;
        }
        .mobile-overlay a {
            color: #fff;
            font-size: 24px;
            font-weight: 600;
            padding: 8px 16px;
            transition: color var(--transition);
        }
        .mobile-overlay a:hover {
            color: var(--accent);
        }
        .mobile-overlay a.active {
            color: var(--accent);
        }
        @media (max-width: 1023px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: block;
            }
        }
        /* ===== Page Hero ===== */
        .page-hero {
            padding: calc(var(--nav-height) + 80px) 0 64px;
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23, 23, 23, 0.92) 0%, rgba(23, 23, 23, 0.78) 40%, rgba(23, 23, 23, 0.65) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--on-dark-2);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--on-dark-2);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .separator {
            color: #5a5a5a;
        }
        .page-hero h1 {
            font-size: 52px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 20px;
            max-width: 700px;
        }
        .page-hero .page-intro {
            font-size: 17px;
            color: var(--on-dark-2);
            max-width: 620px;
            line-height: 1.75;
        }
        @media (max-width: 767px) {
            .page-hero {
                padding: calc(var(--nav-height) + 56px) 0 48px;
            }
            .page-hero h1 {
                font-size: 36px;
            }
            .page-hero .page-intro {
                font-size: 15px;
            }
        }
        /* ===== Gallery Grid ===== */
        .gallery-section {
            background: var(--bg);
            padding-top: 72px;
            padding-bottom: 72px;
        }
        .gallery-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 36px;
            gap: 24px;
            flex-wrap: wrap;
        }
        .gallery-head h2 {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--ink);
        }
        .gallery-head .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            border-radius: 20px;
            border: 1px solid var(--line);
            background: var(--bg-card);
            color: var(--ink-2);
            cursor: pointer;
            transition: all var(--transition);
        }
        .filter-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        .filter-tag.active {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            grid-auto-rows: 240px;
            gap: 20px;
        }
        .gallery-item {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--dark);
            cursor: pointer;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            border: 1px solid var(--line);
        }
        .gallery-item.featured {
            grid-column: span 2;
            grid-row: span 2;
            border-radius: var(--radius-lg);
            box-shadow: 0 4px 12px rgba(23, 23, 23, 0.12);
        }
        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease, filter 0.3s ease;
        }
        .gallery-item:hover img {
            transform: scale(1.04);
            filter: brightness(0.85) saturate(1.05);
        }
        .gallery-item .gallery-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(23, 23, 23, 0.1) 0%, rgba(23, 23, 23, 0.72) 72%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 20px 24px;
            transition: background 0.3s ease;
        }
        .gallery-item:hover .gallery-overlay {
            background: linear-gradient(180deg, rgba(23, 23, 23, 0.2) 0%, rgba(23, 23, 23, 0.85) 72%);
        }
        .gallery-item .gallery-tag {
            display: inline-block;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            background: var(--accent);
            border-radius: 3px;
            margin-bottom: 10px;
            align-self: flex-start;
            letter-spacing: 0.02em;
        }
        .gallery-item h3 {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 6px;
        }
        .gallery-item .gallery-desc {
            font-size: 14px;
            color: var(--on-dark-2);
            line-height: 1.55;
            max-width: 90%;
        }
        .gallery-item.featured h3 {
            font-size: 28px;
        }
        .gallery-item.featured .gallery-desc {
            font-size: 15px;
            max-width: 75%;
        }
        @media (max-width: 1023px) {
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
                grid-auto-rows: 200px;
            }
            .gallery-item.featured {
                grid-column: span 2;
                grid-row: span 1;
            }
        }
        @media (max-width: 767px) {
            .gallery-grid {
                grid-template-columns: 1fr;
                grid-auto-rows: 220px;
            }
            .gallery-item.featured {
                grid-column: span 1;
                grid-row: span 1;
            }
            .gallery-item.featured h3 {
                font-size: 20px;
            }
            .gallery-item.featured .gallery-desc {
                font-size: 14px;
                max-width: 100%;
            }
            .gallery-item h3 {
                font-size: 18px;
            }
        }
        /* ===== Scene Narrative ===== */
        .scene-narrative {
            background: var(--bg-warm);
            padding: 80px 0;
        }
        .scene-narrative h2 {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--ink);
            margin-bottom: 24px;
        }
        .scene-narrative .narrative-text {
            font-size: 16px;
            line-height: 1.85;
            color: var(--ink-2);
            max-width: 780px;
        }
        .scene-narrative .narrative-text p {
            margin-bottom: 16px;
        }
        .scene-narrative .narrative-text strong {
            color: var(--ink);
            font-weight: 600;
        }
        /* ===== Timeline ===== */
        .timeline-section {
            background: var(--bg);
            padding: 88px 0;
        }
        .timeline-section h2 {
            font-size: 32px;
            font-weight: 650;
            line-height: 1.2;
            letter-spacing: -0.01em;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .timeline-section .section-sub {
            font-size: 15px;
            color: var(--ink-2);
            max-width: 600px;
            margin-bottom: 48px;
            line-height: 1.6;
        }
        .timeline {
            position: relative;
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .timeline::before {
            content: '';
            position: absolute;
            top: 22px;
            left: 30px;
            right: 30px;
            height: 2px;
            background: var(--line);
        }
        .timeline-step {
            position: relative;
            text-align: center;
            counter-increment: step;
            padding-top: 60px;
        }
        .timeline-step::before {
            content: counter(step);
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--dark);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1;
            border: 3px solid var(--bg);
        }
        .timeline-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .timeline-step p {
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.6;
        }
        @media (max-width: 1023px) {
            .timeline {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .timeline::before {
                display: none;
            }
            .timeline-step {
                padding-top: 52px;
            }
        }
        @media (max-width: 767px) {
            .timeline {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .timeline-step {
                padding-top: 0;
                padding-left: 56px;
                text-align: left;
            }
            .timeline-step::before {
                left: 0;
                top: 0;
                transform: none;
            }
        }
        /* ===== Data Strip ===== */
        .data-strip {
            background: var(--dark);
            padding: 56px 0;
        }
        .data-strip .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .data-block {
            text-align: center;
        }
        .data-block .data-number {
            font-size: 48px;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .data-block .data-number span {
            color: var(--accent);
        }
        .data-block .data-label {
            font-size: 14px;
            color: var(--on-dark-2);
            margin-top: 8px;
            letter-spacing: 0.02em;
        }
        @media (max-width: 767px) {
            .data-strip .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .data-block .data-number {
                font-size: 36px;
            }
        }
        /* ===== Deep Content ===== */
        .deep-content {
            background: var(--bg-warm);
            padding: 88px 0;
        }
        .deep-content h2 {
            font-size: 28px;
            font-weight: 650;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--ink);
            margin-bottom: 20px;
        }
        .deep-content .deep-text {
            font-size: 16px;
            line-height: 1.85;
            color: var(--ink-2);
            max-width: 780px;
        }
        .deep-content .deep-text p {
            margin-bottom: 16px;
        }
        .deep-content .deep-text strong {
            color: var(--ink);
            font-weight: 600;
        }
        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--accent);
            padding: 72px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-section .btn {
            background: #fff;
            color: var(--accent);
            font-weight: 600;
            padding: 14px 32px;
            font-size: 16px;
        }
        .cta-section .btn:hover {
            background: var(--dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23, 23, 23, 0.25);
        }
        @media (max-width: 767px) {
            .cta-section h2 {
                font-size: 28px;
            }
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: var(--on-dark-2);
            padding: 64px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--on-dark-2);
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: var(--on-dark-2);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: #8a8a86;
        }
        .footer-bottom .icp-line {
            font-size: 13px;
            color: #8a8a86;
        }
        .footer-links {
            display: flex;
            gap: 20px;
            margin-top: 4px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--on-dark-2);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: left;
            }
        }
        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category4 */
:root {
            --bg: #f5f3ee;
            --bg-warm: #edebe4;
            --bg-card: #ffffff;
            --dark: #171717;
            --dark-2: #1e1e1e;
            --ink: #1b1b1b;
            --ink-2: #6e6a63;
            --ink-3: #8d8d8a;
            --line: #dedbd2;
            --accent: #ff4d00;
            --accent-hover: #e04400;
            --accent-soft: rgba(255, 77, 0, 0.08);
            --on-dark: #ffffff;
            --on-dark-2: #c9c6bf;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(23, 23, 23, 0.06);
            --shadow-lg: 0 12px 24px rgba(23, 23, 23, 0.10);
            --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --pad-pc: 40px;
            --pad-mobile: 20px;
            --nav-height: 72px;
            --transition: 0.2s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--bg);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            transition: all 0.15s ease;
        }

        input,
        textarea,
        select {
            font-family: var(--font);
            border-radius: 6px;
            border: 1px solid var(--line);
            padding: 10px 14px;
            font-size: 15px;
            transition: border-color var(--transition);
            outline: none;
            background: #fff;
            color: var(--ink);
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255, 77, 0, 0.15);
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: var(--pad-pc);
            padding-right: var(--pad-pc);
        }

        section {
            padding: 100px 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: transparent;
            transition: background 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            align-items: center;
        }

        .site-header.scrolled {
            background: var(--dark);
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: var(--pad-pc);
            padding-right: var(--pad-pc);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1001;
        }

        .brand-logo-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.05em;
        }

        .brand-text {
            font-weight: 700;
            font-size: 20px;
            color: var(--dark);
            letter-spacing: -0.02em;
            transition: color var(--transition);
        }

        .site-header.scrolled .brand-text {
            color: #fff;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            z-index: 1001;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
        }

        .site-header.scrolled .nav-links a {
            color: var(--on-dark-2);
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .site-header.scrolled .nav-links a:hover {
            color: #fff;
        }

        .nav-links a.active {
            color: var(--accent);
            font-weight: 600;
        }

        .site-header.scrolled .nav-links a.active {
            color: var(--accent);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--accent);
            transition: width 0.2s ease;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            flex-shrink: 0;
            z-index: 1001;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: all 0.15s ease;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 16px rgba(255, 77, 0, 0.22);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary:active {
            background: #c93d00;
            transform: translateY(0);
        }

        .btn-secondary {
            background: transparent;
            color: var(--dark);
            border: 1px solid var(--dark);
        }

        .btn-secondary:hover {
            background: var(--dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 16px rgba(23, 23, 23, 0.18);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-secondary:active {
            transform: translateY(0);
            background: #000;
        }

        .btn-text {
            background: none;
            color: var(--dark);
            padding: 6px 0;
            border-bottom: 1px solid var(--dark);
            border-radius: 0;
            font-weight: 500;
        }

        .btn-text:hover {
            color: var(--accent);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 32px;
            height: 28px;
            justify-content: center;
            align-items: center;
            z-index: 1001;
            cursor: pointer;
            background: none;
            border: none;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--dark);
            border-radius: 2px;
            transition: all 0.25s ease;
        }

        .site-header.scrolled .hamburger span {
            background: #fff;
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--dark);
            z-index: 999;
            display: none;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transform: translateY(-20px);
            transition: opacity 0.25s ease, transform 0.25s ease;
        }

        .mobile-menu.open {
            display: flex;
            opacity: 1;
            transform: translateY(0);
        }

        .mobile-menu ul {
            list-style: none;
            text-align: center;
        }

        .mobile-menu li {
            margin-bottom: 24px;
        }

        .mobile-menu a {
            color: #fff;
            font-size: 24px;
            font-weight: 600;
            letter-spacing: -0.01em;
            transition: color 0.2s ease;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent);
        }

        /* ===== Breadcrumb / Page Hero ===== */
        .page-hero {
            padding-top: calc(var(--nav-height) + 60px);
            padding-bottom: 60px;
            background: var(--dark);
            min-height: 340px;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(23, 23, 23, 0.65);
            z-index: 1;
        }

        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--on-dark-2);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--on-dark-2);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            color: var(--ink-3);
        }

        .breadcrumb .current {
            color: var(--accent);
            font-weight: 500;
        }

        .page-hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 18px;
        }

        .page-hero .hero-sub {
            font-size: 18px;
            line-height: 1.8;
            color: var(--on-dark-2);
            max-width: 680px;
        }

        /* ===== Quick Category Pills ===== */
        .faq-pills-section {
            padding: 40px 0 20px;
            background: var(--bg);
        }

        .faq-pills {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .faq-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 20px;
            background: var(--bg-card);
            border: 1px solid var(--line);
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-2);
            transition: all 0.2s ease;
            cursor: pointer;
            text-decoration: none;
        }

        .faq-pill:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-soft);
            transform: translateY(-1px);
        }

        .faq-pill.active {
            background: var(--dark);
            color: #fff;
            border-color: var(--dark);
        }

        .faq-pill .count {
            font-size: 12px;
            font-weight: 600;
            background: var(--accent-soft);
            color: var(--accent);
            border-radius: 10px;
            padding: 2px 8px;
        }

        .faq-pill.active .count {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        /* ===== FAQ Section ===== */
        .faq-main-section {
            padding: 60px 0 80px;
            background: var(--bg);
        }

        .faq-block-head {
            margin-bottom: 36px;
        }

        .faq-block-head h2 {
            font-size: 30px;
            font-weight: 650;
            line-height: 1.3;
            letter-spacing: -0.015em;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .faq-block-head p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--ink-2);
            max-width: 680px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.2s ease, border-color 0.2s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-item.open {
            border-left: 3px solid var(--accent);
            border-top-left-radius: var(--radius-md);
            border-bottom-left-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 24px;
            font-size: 17px;
            font-weight: 550;
            color: var(--ink);
            cursor: pointer;
            transition: color 0.2s ease;
            text-align: left;
            background: none;
            border: none;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--ink-2);
            transition: all 0.25s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.25s ease, padding 0.25s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--ink-2);
            border-top: 1px solid var(--line);
            padding-top: 16px;
        }

        /* ===== Glossary Cards ===== */
        .glossary-section {
            padding: 80px 0;
            background: var(--bg-warm);
        }

        .glossary-head {
            margin-bottom: 40px;
        }

        .glossary-head h2 {
            font-size: 30px;
            font-weight: 650;
            line-height: 1.3;
            letter-spacing: -0.015em;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .glossary-head p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--ink-2);
            max-width: 680px;
        }

        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .glossary-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
        }

        .glossary-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--accent);
        }

        .glossary-card .glossary-term {
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .glossary-card .glossary-term::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            margin-right: 10px;
            vertical-align: middle;
        }

        .glossary-card p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--ink-2);
        }

        /* ===== Scenario / Steps Strip ===== */
        .faq-scenario-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .scenario-head {
            margin-bottom: 36px;
        }

        .scenario-head h2 {
            font-size: 28px;
            font-weight: 650;
            line-height: 1.3;
            letter-spacing: -0.015em;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .scenario-head p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--ink-2);
            max-width: 680px;
        }

        .scenario-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            text-align: left;
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }

        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .step-card .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .step-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--ink-2);
        }

        /* ===== Data Trust Strip ===== */
        .faq-trust-section {
            padding: 60px 0;
            background: var(--dark);
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .trust-item .trust-num {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.1;
            color: var(--accent);
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }

        .trust-item .trust-label {
            font-size: 14px;
            color: var(--on-dark-2);
            font-weight: 500;
        }

        /* ===== Related Resources ===== */
        .faq-resources-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .resources-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .resource-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }

        .resource-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .resource-card .resource-img {
            height: 160px;
            background-size: cover;
            background-position: center;
        }

        .resource-card .resource-body {
            padding: 20px 24px 24px;
        }

        .resource-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .resource-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--ink-2);
            margin-bottom: 16px;
        }

        .resource-card .btn-text {
            font-size: 14px;
        }

        /* ===== Bottom CTA ===== */
        .faq-cta-section {
            padding: 80px 0;
            background: var(--dark);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .faq-cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent);
        }

        .faq-cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.015em;
            color: #fff;
            margin-bottom: 16px;
        }

        .faq-cta-section p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--on-dark-2);
            max-width: 520px;
            margin: 0 auto 28px;
        }

        .faq-cta-section .btn-primary {
            font-size: 16px;
            padding: 14px 32px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            padding: 60px 0 30px;
            color: var(--on-dark-2);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--on-dark-2);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: var(--on-dark-2);
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--on-dark-2);
        }

        .footer-bottom .icp-line {
            font-size: 13px;
            color: var(--on-dark-2);
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--on-dark-2);
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #fff;
        }

        /* ===== Fixed Bottom Bar ===== */
        .fixed-cta-bar {
            position: fixed;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 900;
            background: var(--dark);
            border-top: 2px solid var(--accent);
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.18);
        }

        .fixed-cta-bar.visible {
            transform: translateY(0);
        }

        .fixed-cta-bar p {
            font-size: 15px;
            color: #fff;
            font-weight: 500;
        }

        .fixed-cta-bar .btn {
            padding: 10px 20px;
            font-size: 14px;
        }

        /* ===== Scroll Animation ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.55s ease, transform 0.55s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .container {
                padding-left: 36px;
                padding-right: 36px;
            }

            .site-header .header-inner {
                padding-left: 36px;
                padding-right: 36px;
            }

            section {
                padding: 80px 0;
            }

            .page-hero h1 {
                font-size: 40px;
            }

            .glossary-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .scenario-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .resources-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding-left: var(--pad-mobile);
                padding-right: var(--pad-mobile);
            }

            .site-header .header-inner {
                padding-left: var(--pad-mobile);
                padding-right: var(--pad-mobile);
            }

            section {
                padding: 56px 0;
            }

            .page-hero {
                padding-top: calc(var(--nav-height) + 40px);
                padding-bottom: 40px;
                min-height: 280px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero .hero-sub {
                font-size: 15px;
            }

            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .faq-block-head h2,
            .glossary-head h2,
            .scenario-head h2,
            .faq-cta-section h2 {
                font-size: 24px;
            }

            .glossary-grid {
                grid-template-columns: 1fr;
            }

            .scenario-steps {
                grid-template-columns: 1fr;
            }

            .resources-grid {
                grid-template-columns: 1fr;
            }

            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .trust-item .trust-num {
                font-size: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .fixed-cta-bar {
                padding: 10px 16px;
                gap: 10px;
                flex-wrap: wrap;
            }

            .fixed-cta-bar p {
                font-size: 13px;
                flex: 1;
                min-width: 120px;
            }

            .fixed-cta-bar .btn {
                width: 50%;
                font-size: 13px;
                padding: 10px 14px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }

            .faq-answer p {
                font-size: 14px;
            }

            .faq-pill {
                padding: 6px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 26px;
            }

            .trust-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .trust-item .trust-num {
                font-size: 28px;
            }

            .scenario-steps {
                grid-template-columns: 1fr;
            }

            .resources-grid {
                grid-template-columns: 1fr;
            }

            .glossary-card {
                padding: 20px;
            }

            .faq-cta-section h2 {
                font-size: 22px;
            }
        }

/* roulang page: category6 */
:root {
            --bg: #f5f3ee;
            --bg-warm: #edebe4;
            --bg-card: #ffffff;
            --dark: #171717;
            --dark-2: #1e1e1e;
            --ink: #1b1b1b;
            --ink-2: #6e6a63;
            --ink-3: #8d8d8a;
            --line: #dedbd2;
            --accent: #ff4d00;
            --accent-hover: #e04400;
            --accent-soft: rgba(255, 77, 0, 0.08);
            --on-dark: #ffffff;
            --on-dark-2: #c9c6bf;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 1px 3px rgba(23, 23, 23, 0.06);
            --shadow-lg: 0 12px 24px rgba(23, 23, 23, 0.10);
            --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --pad-pc: 40px;
            --pad-mobile: 20px;
            --nav-height: 72px;
            --transition: 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--bg);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
            transition: all 0.15s ease;
        }
        input,
        textarea,
        select {
            font-family: var(--font);
            border-radius: 6px;
            border: 1px solid var(--line);
            padding: 10px 14px;
            font-size: 15px;
            transition: border-color var(--transition);
            outline: none;
            background: #fff;
            color: var(--ink);
        }
        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(255, 77, 0, 0.15);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: var(--pad-pc);
            padding-right: var(--pad-pc);
        }
        section {
            padding: 88px 0;
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--dark);
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
            transition: background 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-logo-icon {
            width: 42px;
            height: 42px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: -0.06em;
            line-height: 1;
            text-align: center;
            flex-shrink: 0;
        }
        .brand-text {
            font-weight: 700;
            font-size: 20px;
            color: #fff;
            letter-spacing: -0.02em;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0 auto;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--on-dark-2);
            padding: 4px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a.active {
            color: var(--accent);
            font-weight: 600;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--accent);
            transition: width 0.2s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            flex-shrink: 0;
            margin-left: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.4;
            transition: all 0.15s ease;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-lg);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--on-dark-2);
            color: #fff;
        }
        .btn-outline:hover {
            border-color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
            color: #fff;
        }
        .btn-text {
            background: none;
            color: var(--ink);
            border-bottom: 1px solid var(--ink);
            padding: 4px 0;
            border-radius: 0;
            font-size: 15px;
            font-weight: 500;
        }
        .btn-text:hover {
            border-bottom-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1100;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #fff;
            transition: all 0.2s ease;
            border-radius: 2px;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--dark);
            z-index: 1005;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.25s ease, visibility 0.25s ease;
        }
        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-menu ul {
            list-style: none;
            text-align: center;
        }
        .mobile-menu li {
            margin-bottom: 24px;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.3s ease, transform 0.3s ease;
        }
        .mobile-menu.open li {
            opacity: 1;
            transform: translateY(0);
        }
        .mobile-menu.open li:nth-child(1) { transition-delay: 0.05s; }
        .mobile-menu.open li:nth-child(2) { transition-delay: 0.1s; }
        .mobile-menu.open li:nth-child(3) { transition-delay: 0.15s; }
        .mobile-menu.open li:nth-child(4) { transition-delay: 0.2s; }
        .mobile-menu.open li:nth-child(5) { transition-delay: 0.25s; }
        .mobile-menu.open li:nth-child(6) { transition-delay: 0.3s; }
        .mobile-menu.open li:nth-child(7) { transition-delay: 0.35s; }
        .mobile-menu a {
            font-size: 24px;
            font-weight: 600;
            color: #fff;
            transition: color var(--transition);
        }
        .mobile-menu a:hover {
            color: var(--accent);
        }
        .mobile-menu .mobile-cta {
            margin-top: 32px;
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            padding-top: calc(var(--nav-height) + 32px);
            padding-bottom: 20px;
            background: transparent;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--ink-2);
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 8px;
            color: var(--ink-3);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb li:last-child {
            color: var(--accent);
            font-weight: 500;
        }
        /* ===== Section Titles ===== */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .section-label::before {
            content: '';
            display: block;
            width: 24px;
            height: 2px;
            background: var(--accent);
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .section-sub {
            font-size: 17px;
            color: var(--ink-2);
            line-height: 1.75;
            max-width: 720px;
        }
        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        /* ===== Page Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding-top: calc(var(--nav-height) + 48px);
            padding-bottom: 64px;
            background: var(--dark);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
        }
        .page-hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.28;
            z-index: 0;
        }
        .page-hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(23, 23, 23, 0.55);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero-content h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 16px;
        }
        .page-hero-content p {
            font-size: 17px;
            color: var(--on-dark-2);
            line-height: 1.75;
            max-width: 680px;
        }
        .page-hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 20px;
            font-size: 13px;
            color: var(--on-dark-2);
            flex-wrap: wrap;
        }
        .page-hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .page-hero-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
        }
        /* ===== Featured Tool ===== */
        .featured-tool {
            padding: 72px 0;
            background: var(--bg);
        }
        .featured-tool-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .featured-tool-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            aspect-ratio: 4/3;
            box-shadow: var(--shadow-lg);
        }
        .featured-tool-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .featured-tool-img:hover img {
            transform: scale(1.03);
        }
        .featured-tool-info .tag {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .featured-tool-info h2 {
            font-size: 28px;
            font-weight: 650;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--ink);
        }
        .featured-tool-info p {
            color: var(--ink-2);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .tool-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        /* ===== Steps ===== */
        .steps-section {
            background: var(--dark);
            padding: 88px 0;
        }
        .steps-section .section-title {
            color: #fff;
        }
        .steps-section .section-sub {
            color: var(--on-dark-2);
        }
        .steps-section .section-label {
            color: var(--accent);
        }
        .steps-section .section-label::before {
            background: var(--accent);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: left;
            transition: all var(--transition);
        }
        .step-card:hover {
            border-color: rgba(255, 77, 0, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            flex-shrink: 0;
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .step-card p {
            font-size: 14px;
            color: var(--on-dark-2);
            line-height: 1.65;
            margin-bottom: 0;
        }
        /* ===== Tool Cards Grid ===== */
        .tools-grid-section {
            background: var(--bg);
        }
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .tool-card {
            background: var(--bg-card);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .tool-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(255, 77, 0, 0.25);
        }
        .tool-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--accent-soft);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .tool-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 10px;
            line-height: 1.35;
        }
        .tool-card p {
            font-size: 14px;
            color: var(--ink-2);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 18px;
        }
        .tool-card .btn-text {
            align-self: flex-start;
            font-size: 14px;
        }
        .tool-card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }
        .tool-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .tool-card:hover .tool-card-img img {
            transform: scale(1.04);
        }
        /* ===== Deep Content ===== */
        .deep-content {
            background: #fff;
            padding: 88px 0;
        }
        .deep-content-wrapper {
            max-width: 760px;
            margin: 0 auto;
        }
        .deep-content-wrapper h2 {
            font-size: 26px;
            font-weight: 650;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }
        .deep-content-wrapper h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 12px;
            margin-top: 28px;
            line-height: 1.4;
        }
        .deep-content-wrapper p {
            font-size: 16px;
            color: var(--ink-2);
            line-height: 1.85;
            margin-bottom: 18px;
        }
        .deep-content-wrapper ul {
            list-style: none;
            margin-bottom: 20px;
            padding-left: 0;
        }
        .deep-content-wrapper ul li {
            position: relative;
            padding-left: 24px;
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.75;
            margin-bottom: 10px;
        }
        .deep-content-wrapper ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }
        .deep-quote {
            border-left: 3px solid var(--accent);
            padding: 16px 20px;
            background: var(--accent-soft);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
            font-size: 16px;
            color: var(--ink);
            line-height: 1.8;
            font-style: normal;
        }
        .deep-data-row {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin: 28px 0;
            padding: 20px 0;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .deep-data-item {
            flex: 1;
            min-width: 120px;
            text-align: center;
        }
        .deep-data-item .num {
            font-size: 36px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.03em;
        }
        .deep-data-item .label {
            font-size: 13px;
            color: var(--ink-3);
            margin-top: 4px;
        }
        /* ===== Comparison Table ===== */
        .compare-section {
            background: var(--bg-warm);
            padding: 88px 0;
        }
        .compare-table-wrap {
            overflow-x: auto;
            margin-top: 40px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            min-width: 640px;
            font-size: 14px;
        }
        .compare-table th,
        .compare-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid var(--line);
        }
        .compare-table th {
            background: var(--dark);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
        }
        .compare-table td {
            color: var(--ink-2);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table .highlight {
            color: var(--accent);
            font-weight: 600;
        }
        .compare-table .check {
            color: #1a7f37;
            font-weight: 600;
        }
        /* ===== Related Resources ===== */
        .related-list-section {
            background: #fff;
            padding: 88px 0;
        }
        .related-list {
            list-style: none;
            margin-top: 32px;
            border-top: 1px solid var(--line);
        }
        .related-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 4px;
            border-bottom: 1px solid var(--line);
            gap: 16px;
            flex-wrap: wrap;
            transition: all var(--transition);
        }
        .related-list li:hover {
            padding-left: 12px;
            background: var(--accent-soft);
        }
        .related-list .rl-title {
            font-weight: 600;
            font-size: 16px;
            color: var(--ink);
        }
        .related-list .rl-desc {
            font-size: 14px;
            color: var(--ink-2);
            flex: 1;
            min-width: 200px;
        }
        .related-list .rl-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--accent);
            white-space: nowrap;
        }
        /* ===== CTA Section ===== */
        .page-cta {
            background: var(--dark);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .page-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
        }
        .page-cta h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .page-cta p {
            font-size: 16px;
            color: var(--on-dark-2);
            line-height: 1.75;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .page-cta .btn-primary {
            font-size: 16px;
            padding: 14px 32px;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-2);
            color: #fff;
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--on-dark-2);
            line-height: 1.7;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 8px;
        }
        .footer-col a {
            font-size: 14px;
            color: var(--on-dark-2);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--on-dark-2);
            margin-bottom: 4px;
        }
        .footer-bottom .icp-line {
            font-size: 13px;
            color: var(--on-dark-2);
            margin-bottom: 4px;
        }
        .footer-links {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin-top: 8px;
            font-size: 13px;
        }
        .footer-links a {
            color: var(--on-dark-2);
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        /* ===== Fixed Bottom Bar ===== */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: var(--dark);
            color: #fff;
            padding: 12px 0;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            box-shadow: 0 -4px 12px rgba(23, 23, 23, 0.12);
            border-top: 2px solid var(--accent);
        }
        .fixed-bottom-bar.visible {
            transform: translateY(0);
        }
        .fixed-bottom-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .fixed-bottom-bar p {
            font-size: 15px;
            color: var(--on-dark-2);
        }
        .fixed-bottom-bar p strong {
            color: #fff;
        }
        .fixed-bottom-bar .btn {
            padding: 10px 20px;
            font-size: 14px;
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding-left: 36px;
                padding-right: 36px;
            }
            section {
                padding: 72px 0;
            }
            .nav-links {
                gap: 16px;
            }
            .nav-links a {
                font-size: 13px;
            }
            .featured-tool-grid {
                gap: 32px;
            }
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-hero-content h1 {
                font-size: 34px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: var(--pad-mobile);
                padding-right: var(--pad-mobile);
            }
            section {
                padding: 56px 0;
            }
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .page-hero {
                min-height: 320px;
                padding-top: calc(var(--nav-height) + 24px);
                padding-bottom: 40px;
            }
            .page-hero-content h1 {
                font-size: 28px;
            }
            .page-hero-content p {
                font-size: 15px;
            }
            .featured-tool-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .featured-tool-info h2 {
                font-size: 22px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .tools-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .tool-card {
                padding: 20px 18px;
            }
            .section-title {
                font-size: 26px;
            }
            .deep-data-row {
                gap: 16px;
            }
            .deep-data-item .num {
                font-size: 28px;
            }
            .page-cta h2 {
                font-size: 24px;
            }
            .comparison-table-wrap {
                overflow-x: auto;
            }
            .related-list li {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .related-list .rl-link {
                align-self: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .fixed-bottom-bar .container {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .fixed-bottom-bar p {
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .page-hero-content h1 {
                font-size: 24px;
                line-height: 1.25;
            }
            .featured-tool-info h2 {
                font-size: 20px;
            }
            .tool-actions {
                flex-direction: column;
                gap: 8px;
            }
            .tool-actions .btn {
                width: 100%;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-logo-icon {
                width: 36px;
                height: 36px;
                font-size: 14px;
            }
            .deep-content-wrapper h2 {
                font-size: 22px;
            }
            .page-cta h2 {
                font-size: 21px;
            }
        }