/* roulang page: index */
:root {
            --font-head: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --color-bg: #0b0c0e;
            --color-bg-elev: #14161a;
            --color-surface: #1b1e24;
            --color-primary: #d3a85c;
            --color-primary-hover: #e2bc77;
            --color-primary-soft: rgba(211, 168, 92, 0.12);
            --color-secondary: #718096;
            --color-text: #f2efe8;
            --color-text-secondary: #a2a6ad;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-strong: rgba(255, 255, 255, 0.16);
            --color-light-bg: #f5f2eb;
            --color-light-text: #1a1a1a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.45);
            --transition: 0.45s cubic-bezier(.22, 1, .36, 1);
            --space-section: clamp(4rem, 8vw, 7rem);
            --container: 1200px;
            --container-pad: 20px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--color-bg);
            color: var(--color-text);
            font-family: var(--font-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--color-primary);
        }
        button {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input,
        select {
            font-family: var(--font-body);
        }
        h1,
        h2,
        h3,
        h4 {
            font-family: var(--font-head);
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: clamp(2rem, 4.2vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.5rem, 2.8vw, 2.1rem);
        }
        h3 {
            font-size: 1.25rem;
        }
        ul {
            list-style: none;
        }
        ::selection {
            background: rgba(211, 168, 92, 0.3);
            color: #fff;
        }
        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #0b0c0e;
        }
        ::-webkit-scrollbar-thumb {
            background: #2c2f35;
            border-radius: 6px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3a3e45;
        }

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

        .btn-primary {
            display: inline-block;
            background: var(--color-primary);
            color: #1a1a1a;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            transition: var(--transition);
            border: 1px solid transparent;
            text-align: center;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(211, 168, 92, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: #f2efe8;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
            text-align: center;
        }
        .btn-secondary:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            line-height: 1.35;
        }
        .section-desc {
            color: var(--color-text-secondary);
            max-width: 54ch;
            font-size: 1rem;
            margin-top: 12px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 12, 14, 0.7);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: background 0.4s ease, border-color 0.4s ease;
        }
        .site-header.scrolled {
            background: rgba(11, 12, 14, 0.88);
            border-bottom: 1px solid var(--color-border);
            backdrop-filter: blur(16px);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 64px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            font-family: var(--font-head);
            color: var(--color-text);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 12px rgba(211, 168, 92, 0.8);
            flex-shrink: 0;
        }
        .brand-logo:hover {
            color: var(--color-text);
        }
        .header-search {
            flex: 1;
            max-width: 440px;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 0 18px;
            height: 42px;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .header-search:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(211, 168, 92, 0.15);
        }
        .header-search i {
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            margin-right: 10px;
        }
        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--color-text);
            font-size: 0.9rem;
            flex: 1;
            height: 100%;
        }
        .header-search input::placeholder {
            color: rgba(162, 166, 173, 0.8);
        }
        .header-cta {
            flex-shrink: 0;
        }
        .header-cta .btn-primary {
            padding: 9px 22px;
            font-size: 0.85rem;
        }
        .icon-search-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            align-items: center;
            justify-content: center;
            color: var(--color-text);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-row {
            border-top: 1px solid var(--color-border);
            height: 48px;
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            align-items: center;
            padding: 4px 0;
            width: 100%;
        }
        .nav-list::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-text);
            white-space: nowrap;
            transition: background 0.3s, color 0.3s;
            line-height: 1.4;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.14);
            color: var(--color-text);
        }
        .nav-link.is-active {
            background: var(--color-primary);
            color: #1a1a1a;
            font-weight: 600;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding: 80px 0;
            isolation: isolate;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: -2;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center 30%;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(90deg, #0b0c0e 15%, rgba(11, 12, 14, 0.7) 55%, rgba(11, 12, 14, 0.35) 100%);
        }
        .hero-content {
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 0.8rem;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-weight: 500;
            letter-spacing: 0.06em;
            margin-bottom: 24px;
            border: 1px solid rgba(211, 168, 92, 0.25);
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: #c0c3c9;
            line-height: 1.7;
            max-width: 520px;
            margin-bottom: 34px;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            border-top: 1px solid var(--color-border);
            padding-top: 28px;
        }
        .stat-item {
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        .stat-number {
            font-family: var(--font-head);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-primary);
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }

        /* ===== Feature points (light section) ===== */
        .features-section {
            background: var(--color-light-bg);
            color: var(--color-light-text);
            padding: var(--space-section) 0;
        }
        .features-head {
            max-width: 720px;
            margin-bottom: 56px;
        }
        .features-head .section-desc {
            color: #5c5c5c;
        }
        .feature-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 48px;
        }
        .feature-item {
            position: relative;
            padding-left: 0;
            border-left: none;
        }
        .feature-item::before {
            content: "";
            display: block;
            width: 32px;
            height: 2px;
            background: var(--color-primary);
            margin-bottom: 20px;
        }
        .feature-num {
            font-family: var(--font-head);
            font-size: 0.9rem;
            color: rgba(26, 26, 26, 0.45);
            letter-spacing: 0.1em;
            margin-bottom: 8px;
            display: block;
        }
        .feature-item h3 {
            font-size: 1.35rem;
            margin-bottom: 12px;
        }
        .feature-item p {
            color: #5c5c5c;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== Scenario ===== */
        .scenario-section {
            background: var(--color-bg);
            padding: var(--space-section) 0;
        }
        .scenario-grid {
            display: flex;
            flex-direction: column;
            gap: 80px;
        }
        .scenario-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .scenario-row.reverse .scenario-media {
            order: 2;
        }
        .scenario-row.reverse .scenario-text {
            order: 1;
        }
        .scenario-media {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            aspect-ratio: 16/10;
        }
        .scenario-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .scenario-media:hover img {
            transform: scale(1.03);
        }
        .play-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(11, 12, 14, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 1.2rem;
            transition: background 0.3s, transform 0.3s;
            backdrop-filter: blur(4px);
        }
        .scenario-media:hover .play-icon {
            background: rgba(211, 168, 92, 0.85);
            color: #1a1a1a;
            transform: translate(-50%, -50%) scale(1.05);
        }
        .scenario-tag {
            color: var(--color-primary);
            font-size: 0.8rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 12px;
            display: block;
        }
        .scenario-text h2 {
            margin-bottom: 14px;
        }
        .scenario-text p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
            max-width: 58ch;
        }
        .scenario-points {
            margin-bottom: 24px;
        }
        .scenario-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--color-text);
            font-size: 0.95rem;
            margin-bottom: 8px;
        }
        .scenario-points li::before {
            content: "";
            width: 6px;
            height: 6px;
            background: var(--color-primary);
            border-radius: 50%;
            flex-shrink: 0;
            margin-top: 10px;
        }
        .text-link {
            color: var(--color-primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s;
        }
        .text-link:hover {
            color: var(--color-primary-hover);
            gap: 12px;
        }

        /* ===== Social proof ===== */
        .social-section {
            background: var(--color-light-bg);
            color: var(--color-light-text);
            padding: var(--space-section) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 64px;
        }
        .stats-grid .stat-item {
            flex-direction: column;
            align-items: flex-start;
            gap: 4px;
        }
        .stats-grid .stat-number {
            font-size: 2.5rem;
            color: var(--color-light-text);
            font-weight: 700;
        }
        .stats-grid .stat-number span {
            color: var(--color-primary);
        }
        .stats-grid .stat-label {
            color: #6a6a6a;
            font-size: 0.9rem;
        }
        .quote-list {
            display: flex;
            flex-direction: column;
            gap: 48px;
        }
        .quote-item {
            max-width: 760px;
        }
        .quote-mark {
            font-family: var(--font-head);
            font-size: 3rem;
            color: var(--color-primary);
            line-height: 1;
            display: block;
            margin-bottom: 8px;
        }
        .quote-text {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: #2a2a2a;
            font-weight: 400;
            margin-bottom: 12px;
        }
        .quote-user {
            font-size: 0.9rem;
            color: #888;
        }
        .quote-user strong {
            color: #333;
            font-weight: 600;
        }

        /* ===== Subscribe form ===== */
        .subscribe-section {
            background: var(--color-bg-elev);
            padding: var(--space-section) 0;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .subscribe-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .subscribe-desc {
            color: var(--color-text-secondary);
            margin-top: 12px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            height: 48px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--color-border-strong);
            background: rgba(255, 255, 255, 0.06);
            padding: 0 20px;
            color: var(--color-text);
            font-size: 0.95rem;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(211, 168, 92, 0.12);
        }
        .subscribe-form input[type="email"]::placeholder {
            color: rgba(162, 166, 173, 0.7);
        }
        .subscribe-form .btn-primary {
            height: 48px;
            display: inline-flex;
            align-items: center;
        }
        .subscribe-note {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
            margin-top: 10px;
            width: 100%;
        }

        /* ===== News / Guide ===== */
        .news-section {
            background: var(--color-bg);
            padding: var(--space-section) 0;
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 64px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
        }
        .news-item {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
            transition: padding 0.3s;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-item a {
            font-size: 1rem;
            font-weight: 500;
            line-height: 1.5;
        }
        .news-item a:hover {
            color: var(--color-primary);
        }
        .news-date {
            color: var(--color-text-secondary);
            font-size: 0.82rem;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-block {
            background: var(--color-bg-elev);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .sidebar-block h3 {
            font-size: 1.05rem;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
        }
        .category-link-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .category-link-list a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            transition: background 0.3s, color 0.3s;
            font-size: 0.9rem;
        }
        .category-link-list a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }
        .category-link-list a i {
            color: var(--color-primary);
            font-size: 0.75rem;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            font-size: 0.8rem;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text-secondary);
            transition: background 0.3s, color 0.3s;
        }
        .sidebar-tags a:hover {
            background: var(--color-primary-soft);
            color: var(--color-primary);
        }

        /* ===== Privacy ===== */
        .privacy-section {
            background: var(--color-bg-elev);
            padding: 72px 0;
            border-top: 1px solid var(--color-border);
        }
        .privacy-inner {
            max-width: 820px;
        }
        .privacy-inner h2 {
            margin-bottom: 16px;
        }
        .privacy-inner p {
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            max-width: 70ch;
        }
        .privacy-features {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 24px;
        }
        .privacy-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--color-text);
        }
        .privacy-features li i {
            color: var(--color-primary);
            font-size: 1.1rem;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-bg);
            padding: var(--space-section) 0;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 64px;
        }
        .faq-head .section-desc {
            margin-top: 12px;
        }
        .faq-list {
            width: 100%;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 4px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background: transparent;
            transition: color 0.3s;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            transition: transform 0.35s, color 0.3s;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item.active .faq-question {
            color: var(--color-primary);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 4px;
            color: var(--color-text-secondary);
            font-size: 0.9375rem;
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 4px 22px;
        }

        /* ===== Final CTA ===== */
        .final-cta {
            position: relative;
            background: var(--color-bg);
            padding: var(--space-section) 0;
            text-align: center;
            overflow: hidden;
        }
        .final-cta::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            width: 600px;
            height: 600px;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(211, 168, 92, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .final-cta h2 {
            margin-bottom: 16px;
            position: relative;
        }
        .final-cta p {
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }
        .final-cta .btn-primary {
            padding: 16px 44px;
            font-size: 1rem;
        }
        .faq-link {
            display: inline-block;
            margin-top: 20px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }
        .faq-link:hover {
            color: var(--color-primary);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #08090a;
            padding: 72px 0 28px;
            border-top: 1px solid var(--color-border);
        }
        .footer-top {
            display: flex;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand {
            max-width: 320px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: #777;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-links-wrap {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }
        .footer-links-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-links-col a {
            display: block;
            color: #777;
            font-size: 0.88rem;
            margin-bottom: 10px;
            transition: color 0.3s;
        }
        .footer-links-col a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 0.8125rem;
            color: #777;
        }

        /* ===== Fixed convert bar ===== */
        .convert-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            height: 72px;
            background: rgba(20, 22, 26, 0.92);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            padding: 0 clamp(16px, 4vw, 40px);
            transform: translateY(0);
            transition: transform 0.5s ease;
        }
        .convert-bar.hidden-bar {
            transform: translateY(100%);
        }
        .convert-bar .convert-text {
            flex: 1;
            font-size: 0.9rem;
            font-weight: 500;
            line-height: 1.4;
            margin-right: 16px;
        }
        .convert-bar .btn-primary {
            padding: 10px 24px;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .convert-close {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            font-size: 1rem;
            margin-left: 12px;
            flex-shrink: 0;
            transition: background 0.3s, color 0.3s;
        }
        .convert-close:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--color-text);
        }
        body {
            padding-bottom: 72px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .feature-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }
            .scenario-row {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .scenario-row.reverse .scenario-media {
                order: 0;
            }
            .scenario-row.reverse .scenario-text {
                order: 0;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .subscribe-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .header-search {
                display: none;
            }
            .icon-search-btn {
                display: flex;
            }
            .header-cta .btn-primary {
                display: none;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .feature-list {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-top {
                flex-direction: column;
                gap: 36px;
            }
            .footer-links-wrap {
                gap: 40px;
            }
            .convert-bar {
                height: 64px;
                padding: 0 12px;
            }
            .convert-bar .convert-text {
                font-size: 0.82rem;
            }
            .convert-bar .btn-primary {
                padding: 9px 16px;
                font-size: 0.8rem;
            }
            body {
                padding-bottom: 64px;
            }
        }

        @media (max-width: 520px) {
            .brand-logo {
                font-size: 1.15rem;
            }
            .hero-section {
                min-height: 88vh;
                padding: 60px 0;
            }
            .hero-btns {
                flex-direction: column;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-secondary {
                width: 100%;
                text-align: center;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .stats-grid .stat-number {
                font-size: 2rem;
            }
            .quote-text {
                font-size: 0.95rem;
            }
            .subscribe-form .btn-primary {
                width: 100%;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
                align-items: flex-start;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 18px 0;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --font-head: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --color-bg: #0b0c0e;
            --color-bg-elev: #14161a;
            --color-surface: #1b1e24;
            --color-primary: #d3a85c;
            --color-primary-hover: #e2bc77;
            --color-primary-soft: rgba(211, 168, 92, 0.12);
            --color-secondary: #718096;
            --color-text: #f2efe8;
            --color-text-secondary: #a2a6ad;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-strong: rgba(255, 255, 255, 0.16);
            --color-light-bg: #f5f2eb;
            --color-light-text: #1a1a1a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.45);
            --transition: 0.45s cubic-bezier(.22, 1, .36, 1);
            --space-section: clamp(4rem, 8vw, 7rem);
            --container: 1200px;
            --container-pad: 20px;
        }

        /* ===== Reset 与基础 ===== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--color-bg);
            color: var(--color-text);
            font-family: var(--font-body);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--color-primary);
        }
        button {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        input,
        select {
            font-family: var(--font-body);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }
        ::selection {
            background: rgba(211, 168, 92, 0.3);
            color: #fff;
        }
        ::-webkit-scrollbar {
            width: 10px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #0b0c0e;
        }
        ::-webkit-scrollbar-thumb {
            background: #2a2d35;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3a3e48;
        }
        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
                scroll-behavior: auto !important;
            }
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            display: inline-block;
            background: var(--color-primary);
            color: #1a1a1a;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            transition: var(--transition);
            border: 1px solid transparent;
            text-align: center;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #1a1a1a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(211, 168, 92, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: none;
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: #f2efe8;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 12px 28px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
            text-align: center;
            cursor: pointer;
        }
        .btn-secondary:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 12, 14, 0.72);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: background 0.4s ease, border-color 0.4s ease;
        }
        .site-header.scrolled {
            background: rgba(11, 12, 14, 0.9);
            border-bottom-color: rgba(255, 255, 255, 0.12);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 64px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            font-family: var(--font-head);
            color: var(--color-text);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 12px rgba(211, 168, 92, 0.8);
            flex-shrink: 0;
        }
        .brand-logo:hover {
            color: var(--color-text);
        }
        .header-search {
            flex: 1;
            max-width: 440px;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            padding: 0 18px;
            height: 42px;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .header-search:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(211, 168, 92, 0.15);
        }
        .header-search i {
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            margin-right: 10px;
        }
        .header-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--color-text);
            font-size: 0.9rem;
            height: 100%;
        }
        .header-search input::placeholder {
            color: var(--color-text-secondary);
        }
        .icon-search-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            align-items: center;
            justify-content: center;
            color: var(--color-text);
            flex-shrink: 0;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .header-cta .btn-primary {
            padding: 9px 22px;
            font-size: 0.875rem;
        }
        .nav-row {
            border-top: 1px solid var(--color-border);
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 10px;
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-list::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text);
            font-size: 0.875rem;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text);
        }
        .nav-link.is-active {
            background: var(--color-primary);
            color: #1a1a1a;
            font-weight: 600;
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            position: relative;
            padding: 96px 0 56px;
            background: linear-gradient(135deg, rgba(11, 12, 14, 0.92) 0%, rgba(11, 12, 14, 0.75) 50%, rgba(11, 12, 14, 0.6) 100%), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-bottom: 1px solid var(--color-border);
        }
        .category-hero-inner {
            max-width: 760px;
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-soft);
            border: 1px solid rgba(211, 168, 92, 0.25);
            color: var(--color-primary);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
            text-transform: uppercase;
        }
        .category-hero h1 {
            font-family: var(--font-head);
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        .category-hero h1 span {
            color: var(--color-primary);
        }
        .category-hero-desc {
            color: var(--color-text-secondary);
            font-size: 1rem;
            max-width: 60ch;
            line-height: 1.8;
        }
        .category-hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .category-hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-secondary);
            font-size: 0.85rem;
        }
        .category-hero-meta-item i {
            color: var(--color-primary);
        }

        /* ===== 筛选工具条 ===== */
        .filter-bar {
            background: var(--color-bg-elev);
            border-bottom: 1px solid var(--color-border);
            padding: 16px 0;
        }
        .filter-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .filter-scroll {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex: 1;
            padding-bottom: 2px;
        }
        .filter-scroll::-webkit-scrollbar {
            display: none;
        }
        .filter-pill {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            color: var(--color-text);
            font-size: 0.85rem;
            white-space: nowrap;
            transition: var(--transition);
        }
        .filter-pill:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-primary);
        }
        .filter-pill.is-active {
            background: var(--color-primary);
            color: #1a1a1a;
            border-color: var(--color-primary);
            font-weight: 600;
        }
        .filter-sort select {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-pill);
            color: var(--color-text);
            padding: 8px 16px;
            font-size: 0.85rem;
            outline: none;
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23a2a6ad' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 36px;
        }
        .filter-sort select:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(211, 168, 92, 0.15);
        }

        /* ===== 内容区 ===== */
        .category-content {
            padding: 56px 0 var(--space-section);
        }

        /* Featured 大卡 */
        .featured-card {
            background: var(--color-bg-elev);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 40px;
            transition: var(--transition);
        }
        .featured-card:hover {
            border-color: var(--color-border-strong);
            box-shadow: var(--shadow-card);
        }
        .featured-card-grid {
            display: flex;
            flex-wrap: wrap;
        }
        .featured-card-media {
            flex: 0 0 100%;
            overflow: hidden;
            position: relative;
        }
        @media (min-width: 768px) {
            .featured-card-media {
                flex: 0 0 55%;
                max-width: 55%;
            }
        }
        .featured-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
            transition: transform 0.6s ease;
        }
        .featured-card:hover .featured-card-media img {
            transform: scale(1.03);
        }
        .featured-card-play {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(211, 168, 92, 0.85);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1a1a1a;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
            transition: transform 0.3s ease;
        }
        .featured-card:hover .featured-card-play {
            transform: translate(-50%, -50%) scale(1.08);
        }
        .featured-card-body {
            flex: 1;
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card-tag {
            display: inline-block;
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 14px;
            align-self: flex-start;
        }
        .featured-card h3 {
            font-family: var(--font-head);
            font-size: 1.4rem;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--color-text);
        }
        .featured-card p {
            color: var(--color-text-secondary);
            font-size: 0.925rem;
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 50ch;
        }
        .featured-card-meta {
            display: flex;
            gap: 18px;
            color: var(--color-text-secondary);
            font-size: 0.8rem;
            flex-wrap: wrap;
        }
        .featured-card-meta i {
            color: var(--color-primary);
            margin-right: 4px;
        }
        .featured-card-link {
            margin-top: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }
        .featured-card-link:hover {
            gap: 10px;
            color: var(--color-primary-hover);
        }

        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 24px;
        }
        @media (min-width: 641px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1025px) {
            .card-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .card-item {
            background: var(--color-bg-elev);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            border-color: rgba(211, 168, 92, 0.5);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .card-media {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }
        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .card-item:hover .card-media img {
            transform: scale(1.05);
        }
        .card-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.35) 0%, transparent 40%);
            pointer-events: none;
        }
        .card-body {
            padding: 18px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-family: var(--font-head);
            font-size: 1.05rem;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--color-text);
            transition: color 0.3s ease;
        }
        .card-item:hover .card-body h3 {
            color: var(--color-primary);
        }
        .card-body p {
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            color: var(--color-text-secondary);
            font-size: 0.75rem;
            border-top: 1px solid var(--color-border);
            padding-top: 12px;
        }
        .card-meta i {
            color: var(--color-primary);
            margin-right: 4px;
        }
        .card-meta .card-tag {
            background: var(--color-primary-soft);
            color: var(--color-primary);
            font-size: 0.7rem;
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-weight: 500;
        }

        /* ===== 分页 ===== */
        .pagination-wrap {
            margin-top: 56px;
            display: flex;
            justify-content: center;
        }
        .pagination {
            display: flex;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
            justify-content: center;
        }
        .pagination a,
        .pagination .current,
        .pagination .disabled {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.875rem;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text);
        }
        .pagination a:hover {
            background: rgba(255, 255, 255, 0.14);
            color: var(--color-primary);
        }
        .pagination .current {
            background: var(--color-primary);
            color: #1a1a1a;
            font-weight: 700;
        }
        .pagination .disabled {
            opacity: 0.3;
            pointer-events: none;
        }
        .pagination-arrow {
            font-size: 0.85rem !important;
        }

        /* ===== 页底 CTA ===== */
        .section-cta-slim {
            background: var(--color-light-bg);
            color: var(--color-light-text);
            padding: 64px 0;
            text-align: center;
            position: relative;
        }
        .section-cta-slim h2 {
            font-family: var(--font-head);
            font-size: clamp(1.4rem, 2.5vw, 2rem);
            margin-bottom: 24px;
            color: var(--color-light-text);
        }
        .section-cta-slim .btn-primary {
            background: var(--color-primary);
            color: #1a1a1a;
        }
        .section-cta-slim .btn-primary:hover {
            background: var(--color-primary-hover);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #08090a;
            border-top: 1px solid var(--color-border);
            padding-top: 56px;
        }
        .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand {
            flex: 1;
            min-width: 240px;
            max-width: 340px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 0.875rem;
            line-height: 1.7;
        }
        .footer-links-wrap {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            flex: 1;
            justify-content: flex-end;
        }
        .footer-links-col {
            min-width: 120px;
        }
        .footer-links-col h4 {
            font-size: 0.85rem;
            color: var(--color-text);
            margin-bottom: 12px;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .footer-links-col a {
            display: block;
            color: var(--color-text-secondary);
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color 0.3s ease;
        }
        .footer-links-col a:hover {
            color: var(--color-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            color: #777;
            font-size: 0.8125rem;
        }

        /* ===== 移动端底部转化条 ===== */
        .mobile-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(20, 22, 26, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--color-border);
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transform: translateY(0);
            transition: transform 0.4s ease;
        }
        .mobile-cta-bar.hidden {
            transform: translateY(120%);
        }
        .mobile-cta-bar-text {
            font-size: 0.875rem;
            color: var(--color-text);
            line-height: 1.4;
            flex: 1;
        }
        .mobile-cta-bar .btn-primary {
            padding: 8px 20px;
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .mobile-cta-close {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: background 0.3s;
            flex-shrink: 0;
        }
        .mobile-cta-close:hover {
            background: rgba(255, 255, 255, 0.16);
            color: var(--color-text);
        }
        body {
            padding-bottom: 70px;
        }

        /* ===== 滚动渐入 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 640px) {
            .header-top {
                height: 60px;
                gap: 12px;
            }
            .brand-logo {
                font-size: 1.1rem;
            }
            .header-search {
                display: none;
            }
            .icon-search-btn {
                display: flex;
            }
            .header-cta .btn-primary {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .category-hero {
                padding: 56px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .filter-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-sort {
                align-self: flex-end;
            }
            .featured-card-body {
                padding: 24px 20px;
            }
            .featured-card h3 {
                font-size: 1.2rem;
            }
            .featured-card-meta {
                gap: 10px;
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-top {
                flex-direction: column;
                gap: 32px;
            }
            .footer-links-wrap {
                justify-content: flex-start;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }
            .mobile-cta-bar {
                padding: 10px 14px;
            }
            .mobile-cta-bar-text {
                font-size: 0.8rem;
            }
        }
        @media (min-width: 641px) and (max-width: 1024px) {
            .featured-card-media {
                flex: 0 0 48%;
                max-width: 48%;
            }
        }
        @media (min-width: 1025px) {
            .featured-card-media {
                flex: 0 0 55%;
                max-width: 55%;
            }
        }