/* roulang page: index */
/* ===================================================================
           设计变量
           =================================================================== */
        :root {
            --bg-primary: #0E0E11;
            --bg-secondary: #16161B;
            --bg-deep: #0A0A0C;
            --gold: #C7A16B;
            --gold-light: #D8B47F;
            --text-primary: #E8E4DE;
            --text-secondary: #9B968F;
            --text-muted: #555049;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(199, 161, 107, 0.35);
            --radius-card: 4px;
            --radius-img: 8px;
            --radius-tag: 999px;
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.25);
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
            --font-sans: system-ui, -apple-system, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --container-w: 1280px;
            --space-section: 112px;
        }

        /* ===================================================================
           基础 reset / base
           =================================================================== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===================================================================
           导航
           =================================================================== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(14, 14, 17, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .site-header.scrolled {
            border-bottom-color: var(--border);
            background: rgba(14, 14, 17, 0.92);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-size: 1.22rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--text-primary);
            white-space: nowrap;
            transition: color 0.3s;
        }

        .logo:hover {
            color: var(--gold-light);
        }

        .logo .logo-mark {
            width: 28px;
            height: 28px;
            border: 1px solid var(--gold);
            border-radius: 50%;
            position: relative;
            flex-shrink: 0;
        }

        .logo .logo-mark::after {
            content: "";
            position: absolute;
            inset: 5px;
            border: 1px solid rgba(199, 161, 107, 0.45);
            border-radius: 50%;
        }

        .logo .logo-mark::before {
            content: "南";
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--gold);
            line-height: 1;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .main-nav .nav-link {
            position: relative;
            font-size: 0.9rem;
            letter-spacing: 0.08em;
            color: var(--text-secondary);
            padding: 6px 2px;
            transition: color 0.3s;
        }

        .main-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 1px;
            background: var(--gold);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.35s ease;
        }

        .main-nav .nav-link:hover {
            color: var(--text-primary);
        }

        .main-nav .nav-link:hover::after {
            transform: scaleX(1);
        }

        .main-nav .nav-link.active {
            color: var(--gold);
        }

        .main-nav .nav-link.active::after {
            transform: scaleX(1);
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 1px;
            background: var(--text-primary);
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        /* ===================================================================
           Hero
           =================================================================== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            padding-top: 72px;
            overflow: hidden;
            background-image:
                linear-gradient(90deg, rgba(14, 14, 17, 0.92) 0%, rgba(14, 14, 17, 0.60) 55%, rgba(14, 14, 17, 0.25) 100%),
                linear-gradient(0deg, #0E0E11 0%, transparent 55%),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .hero::after {
            content: "南";
            position: absolute;
            right: 4vw;
            bottom: -6vw;
            font-family: var(--font-serif);
            font-size: 24rem;
            line-height: 1;
            color: rgba(199, 161, 107, 0.045);
            pointer-events: none;
            user-select: none;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
            padding-top: 5vh;
            padding-bottom: 8vh;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 18px;
            border: 1px solid rgba(199, 161, 107, 0.5);
            border-radius: var(--radius-tag);
            font-size: 0.8rem;
            letter-spacing: 0.14em;
            color: var(--gold);
            margin-bottom: 28px;
        }

        .hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(2.5rem, 5vw, 4.25rem);
            font-weight: 600;
            line-height: 1.22;
            letter-spacing: 0.03em;
            margin-bottom: 24px;
            color: var(--text-primary);
        }

        .hero-subtitle {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 40px;
        }

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

        .btn-primary,
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-card);
            font-size: 0.95rem;
            letter-spacing: 0.06em;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--gold);
            color: #141414;
            font-weight: 600;
            border: 1px solid var(--gold);
        }

        .btn-primary:hover {
            background: var(--gold-light);
            border-color: var(--gold-light);
            box-shadow: 0 0 20px rgba(199, 161, 107, 0.2);
        }

        .btn-secondary {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            background: transparent;
        }

        .btn-secondary:hover {
            border-color: var(--gold);
            color: var(--gold);
        }

        .hero-status {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 52px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            letter-spacing: 0.05em;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #7FA98A;
            position: relative;
        }

        .status-dot::after {
            content: "";
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            border: 1px solid rgba(127, 169, 138, 0.4);
            animation: pulse 2s ease infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(0.85); opacity: 0.6; }
            50% { transform: scale(1.15); opacity: 0; }
        }

        /* ===================================================================
           横滑片库
           =================================================================== */
        .section {
            padding-top: var(--space-section);
            padding-bottom: var(--space-section);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 44px;
        }

        .section-head h2 {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            position: relative;
            padding-bottom: 14px;
        }

        .section-head h2::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 36px;
            height: 2px;
            background: var(--gold);
        }

        .section-head .section-desc {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 8px;
        }

        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            letter-spacing: 0.05em;
            white-space: nowrap;
            transition: color 0.3s;
            position: relative;
        }

        .more-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -3px;
            height: 1px;
            width: 100%;
            background: var(--gold);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.35s ease;
        }

        .more-link:hover {
            color: var(--gold);
        }

        .more-link:hover::after {
            transform: scaleX(1);
        }

        .horizontal-scroll {
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            scrollbar-width: none;
            -ms-overflow-style: none;
            margin-right: calc((100vw - min(100vw, var(--container-w))) / 2);
            margin-left: calc((100vw - min(100vw, var(--container-w))) / 2);
            padding-right: 2vw;
        }

        .horizontal-scroll::-webkit-scrollbar {
            display: none;
        }

        .scroll-track {
            display: flex;
            gap: 24px;
            width: max-content;
        }

        .scroll-card {
            width: 300px;
            flex-shrink: 0;
            scroll-snap-align: start;
            border-radius: var(--radius-img);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.06);
            background: var(--bg-secondary);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            position: relative;
            display: block;
        }

        .scroll-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .scroll-card .card-media {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .scroll-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

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

        .scroll-card .card-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(14, 14, 17, 0.75) 100%);
            pointer-events: none;
        }

        .scroll-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(14, 14, 17, 0.78);
            border: 1px solid rgba(199, 161, 107, 0.45);
            color: var(--gold);
            font-size: 0.72rem;
            letter-spacing: 0.1em;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            backdrop-filter: blur(6px);
        }

        .scroll-card .card-body {
            padding: 18px 20px 20px;
        }

        .scroll-card .card-body h3 {
            font-family: var(--font-serif);
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-primary);
        }

        .scroll-card .card-body p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===================================================================
           榜单列表 / 热播推荐
           =================================================================== */
        .rank-section {
            background: var(--bg-deep);
        }

        .rank-list {
            margin-top: 10px;
        }

        .rank-item {
            display: flex;
            align-items: baseline;
            gap: 28px;
            padding: 30px 8px;
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease;
            border-radius: var(--radius-card);
        }

        .rank-item:first-child {
            border-top: 1px solid var(--border);
        }

        .rank-item:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .rank-number {
            font-family: var(--font-serif);
            font-size: 2.4rem;
            font-weight: 600;
            color: var(--gold);
            opacity: 0.85;
            line-height: 1;
            min-width: 56px;
            font-variant-numeric: tabular-nums;
            transition: color 0.3s ease;
        }

        .rank-item:hover .rank-number {
            color: var(--gold-light);
            opacity: 1;
        }

        .rank-info {
            flex: 1;
        }

        .rank-info h3 {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
            transition: color 0.3s;
        }

        .rank-item:hover .rank-info h3 {
            color: #fff;
        }

        .rank-info p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }

        .rank-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 10px;
        }

        .tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.75rem;
            letter-spacing: 0.08em;
            color: var(--text-secondary);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-tag);
            transition: border-color 0.3s, color 0.3s;
        }

        .tag:hover {
            border-color: var(--gold);
            color: var(--gold);
        }

        /* ===================================================================
           片单分区
           =================================================================== */
        .playlist-block {
            margin-bottom: 96px;
        }

        .playlist-block:last-child {
            margin-bottom: 0;
        }

        .playlist-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }

        .playlist-head .playlist-left {
            display: flex;
            align-items: baseline;
            gap: 16px;
            flex-wrap: wrap;
        }

        .playlist-num {
            font-family: var(--font-serif);
            font-size: 0.9rem;
            color: var(--gold);
            letter-spacing: 0.16em;
        }

        .playlist-head h2 {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .playlist-head .playlist-desc {
            color: var(--text-secondary);
            font-size: 0.88rem;
        }

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

        .playlist-card {
            display: block;
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-img);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

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

        .playlist-card .pl-media {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .playlist-card .pl-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .playlist-card:hover .pl-media img {
            transform: scale(1.03);
        }

        .playlist-card .pl-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(14, 14, 17, 0.65) 100%);
        }

        .playlist-card .pl-body {
            padding: 18px 20px 22px;
        }

        .playlist-card .pl-body h3 {
            font-family: var(--font-serif);
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .playlist-card .pl-body p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .playlist-divider {
            border: none;
            border-top: 1px solid var(--border);
            margin: 0 0 96px;
        }

        /* ===================================================================
           资讯列表 CMS
           =================================================================== */
        .news-section {
            background: var(--bg-deep);
        }

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

        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-secondary);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

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

        .news-card .badge {
            align-self: flex-start;
            padding: 4px 12px;
            font-size: 0.72rem;
            letter-spacing: 0.1em;
            color: var(--gold);
            border: 1px solid rgba(199, 161, 107, 0.35);
            border-radius: var(--radius-tag);
            margin-bottom: 14px;
        }

        .news-card h3 {
            font-family: var(--font-serif);
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.55;
            color: var(--text-primary);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 18px;
        }

        .news-card .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 14px;
            margin-top: auto;
        }

        .news-card .news-meta time {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-variant-numeric: tabular-nums;
        }

        .news-card .news-meta .read-more {
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.3s;
        }

        .news-card:hover .news-meta .read-more {
            color: var(--gold);
        }

        .news-empty {
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 60px 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.95rem;
            grid-column: 1 / -1;
            letter-spacing: 0.05em;
        }

        /* ===================================================================
           FAQ
           =================================================================== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 24px 4px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            transition: color 0.3s;
            width: 100%;
            text-align: left;
            background: none;
            border: none;
        }

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

        .faq-icon {
            position: relative;
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            transition: transform 0.35s ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: var(--text-secondary);
            transition: background 0.3s;
        }

        .faq-icon::before {
            left: 0;
            top: 50%;
            width: 100%;
            height: 1px;
            transform: translateY(-50%);
        }

        .faq-icon::after {
            left: 50%;
            top: 0;
            height: 100%;
            width: 1px;
            transform: translateX(-50%);
        }

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

        .faq-item.open .faq-icon::before,
        .faq-item.open .faq-icon::after {
            background: var(--gold);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer p {
            padding: 0 40px 26px 4px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===================================================================
           CTA
           =================================================================== */
        .cta-section {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-image:
                linear-gradient(90deg, rgba(10, 10, 12, 0.92) 0%, rgba(14, 14, 17, 0.75) 60%, rgba(14, 14, 17, 0.35) 100%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
        }

        .cta-section::before {
            content: "宫";
            position: absolute;
            left: 5%;
            top: 50%;
            transform: translateY(-50%);
            font-family: var(--font-serif);
            font-size: 20rem;
            line-height: 1;
            color: rgba(199, 161, 107, 0.035);
            pointer-events: none;
            user-select: none;
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .cta-content h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 18px;
        }

        .cta-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* ===================================================================
           页脚
           =================================================================== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding-top: 72px;
            padding-bottom: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 60px;
            padding-bottom: 56px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 340px;
        }

        .footer-col h3 {
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.1em;
            color: var(--text-primary);
            margin-bottom: 22px;
            text-transform: none;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: color 0.3s;
        }

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

        .footer-contact-list li {
            display: flex;
            gap: 10px;
            align-items: baseline;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .footer-contact-list i {
            color: var(--gold);
            width: 16px;
            flex-shrink: 0;
            text-align: center;
            transform: translateY(2px);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            padding-top: 30px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

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

        /* ===================================================================
           响应式
           =================================================================== */
        @media (max-width: 1023px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .main-nav {
                gap: 24px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: 72px;
            }

            .container {
                padding: 0 16px;
            }

            .menu-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-deep);
                flex-direction: column;
                align-items: flex-start;
                padding: 32px 24px;
                gap: 24px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-12px);
                opacity: 0;
                visibility: hidden;
                transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .hero {
                min-height: 92vh;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary,
            .btn-secondary {
                justify-content: center;
            }

            .scroll-card {
                width: min(300px, 78vw);
            }

            .horizontal-scroll {
                margin: 0 -16px;
                padding: 0 16px;
            }

            .section-head {
                flex-wrap: wrap;
            }

            .rank-item {
                gap: 16px;
                padding: 24px 9px;
            }

            .rank-number {
                font-size: 1.8rem;
                min-width: 38px;
            }

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

            .playlist-head {
                flex-direction: column;
                align-items: flex-start;
            }

            .playlist-block {
                margin-bottom: 72px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .cta-section {
                min-height: 360px;
            }

            .faq-answer p {
                padding-right: 4px;
            }

            .faq-question {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 500px) {
            .logo {
                font-size: 1.05rem;
            }
        }

        /* ===================================================================
           区块进入动画
           =================================================================== */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            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;
            }
        }

/* roulang page: article */
:root {
            --bg-dark: #0E0E11;
            --bg-deeper: #0A0A0C;
            --bg-card: #16161B;
            --color-gold: #C7A16B;
            --color-gold-light: #D8B47F;
            --color-text: #E8E4DE;
            --color-text-secondary: #9B968F;
            --color-text-muted: #555049;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-gold: rgba(199, 161, 107, 0.35);
            --radius-sm: 2px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.25);
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
            --font-sans: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --header-height: 72px;
            --container-max: 1280px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        ul, ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: rgba(14, 14, 17, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-top: 1px solid rgba(199, 161, 107, 0.18);
            border-bottom: 1px solid transparent;
            z-index: 100;
            transition: var(--transition);
        }

        .site-header.is-scrolled {
            border-bottom-color: var(--color-border);
            background: rgba(14, 14, 17, 0.93);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-serif);
            font-size: 1.12rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-text);
            transition: var(--transition);
            white-space: nowrap;
        }

        .brand:hover {
            color: var(--color-gold);
        }

        .brand-mark {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            border: 1px solid var(--color-gold);
            border-radius: 50%;
            position: relative;
            background: radial-gradient(circle, rgba(199, 161, 107, 0.22), transparent 70%);
        }

        .brand-mark::after {
            content: '';
            position: absolute;
            inset: 7px;
            border: 1px solid rgba(199, 161, 107, 0.55);
            border-radius: 50%;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
        }

        .nav-link {
            position: relative;
            font-size: 0.9rem;
            letter-spacing: 0.08em;
            color: var(--color-text-secondary);
            padding: 10px 2px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--color-gold);
            transition: width 0.3s ease;
        }

        .nav-link:hover {
            color: var(--color-text);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--color-gold);
        }

        .nav-link.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 1px;
            background: var(--color-text);
            transition: var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--color-gold);
        }

        .nav-toggle:hover span {
            background: var(--color-gold);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                gap: 0;
                align-items: stretch;
                background: rgba(14, 14, 17, 0.97);
                border-bottom: 1px solid var(--color-border);
                padding: 12px 24px 24px;
                transform: translateY(-16px);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
            }

            .main-nav.is-open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-link {
                padding: 16px 4px;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            .nav-link:last-child {
                border-bottom: none;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            font-size: 0.95rem;
            letter-spacing: 0.06em;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-weight: 500;
        }

        .btn-primary {
            background: var(--color-gold);
            color: #141414;
            font-weight: 600;
        }

        .btn-primary:hover {
            background: var(--color-gold-light);
            box-shadow: 0 0 28px rgba(199, 161, 107, 0.25);
            transform: translateY(-2px);
        }

        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--color-text);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: var(--color-gold);
            color: var(--color-gold);
            transform: translateY(-2px);
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 3px;
        }

        /* ===== Tag / Badge ===== */
        .tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 0.72rem;
            letter-spacing: 0.14em;
            border: 1px solid rgba(199, 161, 107, 0.4);
            color: var(--color-gold);
            border-radius: 999px;
            background: rgba(199, 161, 107, 0.06);
            transition: var(--transition);
        }

        .tag:hover {
            background: rgba(199, 161, 107, 0.14);
            border-color: var(--color-gold-light);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            letter-spacing: 0.04em;
            color: var(--color-text-muted);
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: var(--transition);
        }

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

        .bc-sep {
            color: rgba(255, 255, 255, 0.2);
        }

        .bc-current {
            color: var(--color-text-secondary);
            max-width: 600px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 150px 0 76px;
            background: linear-gradient(
                180deg,
                rgba(14, 14, 17, 0.72) 0%,
                rgba(14, 14, 17, 0.88) 55%,
                rgba(14, 14, 17, 0.98) 100%
            ), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            border-bottom: 1px solid var(--color-border);
            overflow: hidden;
        }

        .article-hero::before {
            content: '南';
            position: absolute;
            right: -10px;
            top: 80px;
            font-family: var(--font-serif);
            font-size: 22rem;
            line-height: 1;
            color: rgba(229, 199, 150, 0.04);
            z-index: 0;
            pointer-events: none;
            user-select: none;
        }

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

        .article-head h1 {
            font-family: var(--font-serif);
            font-size: clamp(2rem, 4vw, 3rem);
            line-height: 1.35;
            letter-spacing: 0.03em;
            margin: 0 0 18px;
            max-width: 960px;
            color: var(--color-text);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 16px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--color-text-secondary);
            font-size: 0.88rem;
        }

        .meta-item i {
            color: var(--color-gold);
            font-size: 0.82rem;
            width: 14px;
            text-align: center;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 68px 0 96px;
            min-height: 30vh;
        }

        .container-narrow {
            max-width: 780px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-narrow {
                padding: 0 16px;
            }
        }

        /* ===== Article Content Typography ===== */
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: #D6D1C8;
            word-break: break-word;
        }

        .article-content > *:first-child {
            margin-top: 0;
        }

        .article-content p {
            margin: 0 0 1.5em;
            text-align: left;
        }

        .article-content h2 {
            font-family: var(--font-serif);
            font-size: 1.65rem;
            color: var(--color-text);
            margin: 2.4em 0 0.9em;
            line-height: 1.4;
            letter-spacing: 0.04em;
            position: relative;
            padding-left: 18px;
        }

        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.15em;
            width: 3px;
            height: 0.95em;
            background: var(--color-gold);
            border-radius: 2px;
        }

        .article-content h3 {
            font-family: var(--font-serif);
            font-size: 1.28rem;
            color: var(--color-text);
            margin: 1.9em 0 0.7em;
            letter-spacing: 0.02em;
            line-height: 1.5;
        }

        .article-content h4 {
            font-size: 1.08rem;
            color: var(--color-text);
            margin: 1.6em 0 0.5em;
        }

        .article-content a {
            color: var(--color-gold);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(199, 161, 107, 0.4);
            transition: var(--transition);
        }

        .article-content a:hover {
            color: var(--color-gold-light);
            text-decoration-color: var(--color-gold-light);
        }

        .article-content ul, .article-content ol {
            margin: 0 0 1.6em;
            padding-left: 1.4em;
        }

        .article-content ul li, .article-content ol li {
            margin-bottom: 0.65em;
            line-height: 1.8;
        }

        .article-content ul li::marker {
            color: var(--color-gold);
        }

        .article-content ol li::marker {
            color: var(--color-gold);
            font-weight: 600;
        }

        .article-content blockquote {
            margin: 2.2em 0;
            padding: 18px 26px;
            border-left: 3px solid var(--color-gold);
            background: rgba(199, 161, 107, 0.04);
            color: var(--color-text-secondary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: normal;
        }

        .article-content blockquote p {
            margin-bottom: 0.4em;
        }

        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: var(--radius-lg);
            margin: 2.2em 0;
            max-width: 100%;
            height: auto;
        }

        .article-content figure {
            margin: 2.2em 0;
        }

        .article-content figcaption {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            text-align: center;
            margin-top: 12px;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 0.95rem;
        }

        .article-content th, .article-content td {
            padding: 14px 16px;
            border: 1px solid var(--color-border);
            text-align: left;
            line-height: 1.6;
        }

        .article-content th {
            background: rgba(255, 255, 255, 0.04);
            color: var(--color-text);
            font-weight: 600;
        }

        .article-content code {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--color-gold);
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
        }

        .article-content pre {
            background: var(--bg-deeper);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            overflow-x: auto;
            margin: 2em 0;
            line-height: 1.7;
        }

        .article-content pre code {
            background: none;
            padding: 0;
            color: #D6D1C8;
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 2.5em 0;
        }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 40px 0 60px;
        }

        .not-found h2 {
            font-family: var(--font-serif);
            font-size: 2rem;
            margin: 0 0 16px;
        }

        .not-found p {
            color: var(--color-text-secondary);
            font-size: 1rem;
            margin-bottom: 36px;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 88px 0 120px;
            border-top: 1px solid var(--color-border);
            background: rgba(255, 255, 255, 0.008);
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-mark {
            display: inline-block;
            font-family: var(--font-serif);
            font-size: 0.82rem;
            letter-spacing: 0.18em;
            color: var(--color-gold);
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-family: var(--font-serif);
            font-size: 2rem;
            margin: 0 0 12px;
            letter-spacing: 0.05em;
            color: var(--color-text);
        }

        .section-head p {
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            margin: 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 36px;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-border-gold);
            box-shadow: var(--shadow-card);
        }

        .related-card:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 3px;
        }

        .related-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .related-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }

        .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            display: inline-block;
            background: rgba(10, 10, 12, 0.72);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(199, 161, 107, 0.35);
            color: var(--color-gold);
            font-size: 0.7rem;
            letter-spacing: 0.1em;
            padding: 5px 14px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .related-body {
            padding: 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-body h3 {
            font-family: var(--font-serif);
            font-size: 1.2rem;
            margin: 0 0 12px;
            color: var(--color-text);
            transition: var(--transition);
            letter-spacing: 0.03em;
            line-height: 1.5;
        }

        .related-card:hover .related-body h3 {
            color: var(--color-gold);
        }

        .related-body p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--color-text-secondary);
            margin: 0 0 18px;
            flex: 1;
        }

        .related-link {
            font-size: 0.85rem;
            color: var(--color-gold);
            letter-spacing: 0.08em;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease, color 0.3s ease;
            font-weight: 500;
        }

        .related-link:hover {
            gap: 12px;
        }

        .related-link i {
            font-size: 0.75rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deeper);
            border-top: 1px solid var(--color-border);
            padding: 68px 0 30px;
        }

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

        .footer-brand .logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-serif);
            font-size: 1.1rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-text);
            transition: var(--transition);
        }

        .footer-brand .logo:hover {
            color: var(--color-gold);
        }

        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
            margin: 18px 0 0;
            max-width: 400px;
        }

        .footer-col h3 {
            font-family: var(--font-serif);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 22px;
            letter-spacing: 0.06em;
        }

        .footer-col ul li {
            margin-bottom: 13px;
        }

        .footer-col ul li a {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: var(--color-gold);
            padding-left: 4px;
        }

        .footer-contact-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            margin-bottom: 13px;
        }

        .footer-contact-list i {
            color: var(--color-gold);
            font-size: 0.85rem;
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 26px;
            border-top: 1px solid var(--color-border);
            color: var(--color-text-muted);
            font-size: 0.8rem;
        }

        .footer-bottom a {
            color: var(--color-text-secondary);
            transition: var(--transition);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 36px;
            }

            .main-nav {
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 140px 0 56px;
            }

            .article-hero::before {
                font-size: 16rem;
                top: 100px;
                right: -30px;
            }

            .article-main {
                padding: 48px 0 72px;
            }

            .related-section {
                padding: 64px 0 84px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .article-meta {
                gap: 16px;
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }

            .section-head h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 640px) {
            .brand-text {
                font-size: 0.98rem;
            }

            .article-head h1 {
                font-size: 1.65rem;
                line-height: 1.4;
            }

            .related-grid {
                gap: 18px;
            }

            .related-body {
                padding: 20px;
            }

            .related-body h3 {
                font-size: 1.05rem;
            }

            .article-content {
                font-size: 1rem;
                line-height: 1.75;
            }

            .article-content h2 {
                font-size: 1.35rem;
                padding-left: 14px;
            }

            .article-content h3 {
                font-size: 1.12rem;
            }

            .not-found h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 3px;
            border-radius: 2px;
        }

        ::selection {
            background: rgba(199, 161, 107, 0.3);
            color: #fff;
        }

/* roulang page: category1 */
:root{
            --bg:#0E0E11;
            --bg-card:#16161B;
            --bg-footer:#0A0A0C;
            --primary:#C7A16B;
            --primary-hover:#D8B47F;
            --text:#E8E4DE;
            --text-secondary:#9B968F;
            --text-weak:#555049;
            --border:rgba(255,255,255,0.08);
            --radius:6px;
            --radius-lg:8px;
            --shadow-hover:0 8px 30px rgba(0,0,0,0.25);
            --serif:"Noto Serif SC","Source Han Serif SC","STSong",serif;
            --sans:system-ui,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{
            background:var(--bg);
            color:var(--text);
            font-family:var(--sans);
            line-height:1.7;
            -webkit-font-smoothing:antialiased;
            overflow-x:hidden;
        }
        img{display:block;max-width:100%}
        a{color:inherit;text-decoration:none}
        button{font-family:inherit;cursor:pointer}
        .container{
            max-width:1280px;
            margin:0 auto;
            padding-left:24px;
            padding-right:24px;
        }
        @media(max-width:520px){
            .container{padding-left:16px;padding-right:16px}
        }

        /* ===== Header ===== */
        .site-header{
            position:fixed;
            top:0;left:0;right:0;
            z-index:100;
            height:72px;
            background:rgba(255,255,255,0.02);
            backdrop-filter:blur(14px);
            -webkit-backdrop-filter:blur(14px);
            border-top:1px solid transparent;
            border-bottom:1px solid transparent;
            transition:border-color .3s ease,background .3s ease;
        }
        .site-header.scrolled{
            border-bottom-color:var(--border);
            background:rgba(14,14,17,0.85);
        }
        .nav-wrap{
            display:flex;
            align-items:center;
            justify-content:space-between;
            height:72px;
        }
        .logo{
            display:flex;
            align-items:center;
            gap:10px;
            font-family:var(--serif);
            font-size:1.125rem;
            font-weight:600;
            letter-spacing:.04em;
            color:var(--text);
            white-space:nowrap;
        }
        .logo-mark{
            width:28px;height:28px;
            border:1px solid var(--primary);
            border-radius:50%;
            position:relative;
            flex-shrink:0;
            transform:rotate(45deg);
        }
        .logo-mark::after{
            content:"";
            position:absolute;
            inset:6px;
            border-radius:50%;
            background:var(--primary);
            opacity:.55;
        }
        .main-nav{
            display:flex;
            align-items:center;
            gap:36px;
        }
        .nav-link{
            position:relative;
            font-size:.875rem;
            letter-spacing:.08em;
            color:var(--text-secondary);
            padding:6px 0;
            transition:color .2s ease;
            white-space:nowrap;
        }
        .nav-link::after{
            content:"";
            position:absolute;
            left:0;bottom:0;
            width:0;height:1px;
            background:var(--primary);
            transition:width .3s ease;
        }
        .nav-link:hover{
            color:var(--text);
        }
        .nav-link:hover::after{
            width:100%;
        }
        .nav-link.active{
            color:var(--primary);
        }
        .nav-link.active::after{
            width:100%;
            background:var(--primary);
        }
        .nav-toggle{
            display:none;
            width:40px;height:40px;
            background:none;
            border:none;
            flex-direction:column;
            align-items:center;
            justify-content:center;
            gap:5px;
            z-index:101;
        }
        .nav-toggle span{
            display:block;
            width:20px;height:1px;
            background:var(--text);
            transition:transform .25s ease,opacity .25s ease;
        }
        .nav-toggle.open span:nth-child(1){
            transform:translateY(6px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2){
            opacity:0;
        }
        .nav-toggle.open span:nth-child(3){
            transform:translateY(-6px) rotate(-45deg);
        }

        /* ===== Cat Hero ===== */
        .cat-hero{
            position:relative;
            padding:168px 0 100px;
            background:
                linear-gradient(to bottom,rgba(14,14,17,0.88),rgba(14,14,17,0.65),var(--bg)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom:1px solid var(--border);
            overflow:hidden;
        }
        .cat-hero::before{
            content:"业";
            position:absolute;
            right:6%;
            bottom:-30px;
            font-family:var(--serif);
            font-size:20rem;
            line-height:1;
            color:rgba(199,161,107,0.045);
            pointer-events:none;
            user-select:none;
        }
        .cat-hero .hero-tag{
            display:inline-block;
            padding:5px 18px;
            border:1px solid var(--primary);
            border-radius:999px;
            font-size:.75rem;
            letter-spacing:.14em;
            color:var(--primary);
            margin-bottom:28px;
            position:relative;
            z-index:2;
        }
        .cat-hero h1{
            font-family:var(--serif);
            font-size:clamp(2.5rem,5vw,4rem);
            font-weight:600;
            letter-spacing:.04em;
            line-height:1.2;
            margin-bottom:24px;
            position:relative;
            z-index:2;
        }
        .cat-hero .hero-desc{
            max-width:680px;
            font-size:1.125rem;
            color:var(--text-secondary);
            line-height:1.8;
            position:relative;
            z-index:2;
        }

        /* ===== Section ===== */
        .section{
            border-bottom:1px solid var(--border);
            background:var(--bg);
        }
        .section-alt{
            background:rgba(255,255,255,0.012);
        }
        .section-header{
            display:flex;
            align-items:flex-end;
            justify-content:space-between;
            margin-bottom:56px;
            gap:24px;
        }
        .section-header.center{
            justify-content:center;
            text-align:center;
        }
        .section-header.center .section-desc{
            margin-left:auto;
            margin-right:auto;
        }
        .section-index{
            font-family:var(--serif);
            font-size:.8125rem;
            letter-spacing:.22em;
            color:var(--primary);
            display:block;
            margin-bottom:14px;
            font-variant-numeric:tabular-nums;
        }
        .section-title{
            font-family:var(--serif);
            font-size:clamp(1.75rem,3vw,2.25rem);
            font-weight:600;
            letter-spacing:.03em;
            line-height:1.3;
        }
        .section-desc{
            color:var(--text-secondary);
            max-width:560px;
            margin-top:12px;
            font-size:.9375rem;
        }
        .section-more{
            font-size:.875rem;
            letter-spacing:.08em;
            color:var(--text-secondary);
            border-bottom:1px solid transparent;
            transition:color .2s,border-color .2s;
            white-space:nowrap;
        }
        .section-more:hover{
            color:var(--primary);
            border-color:var(--primary);
        }

        /* ===== Business Card ===== */
        .business-card{
            display:block;
            background:var(--bg-card);
            border:1px solid var(--border);
            border-radius:var(--radius-lg);
            overflow:hidden;
            transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
        }
        .business-card:hover{
            transform:translateY(-2px);
            box-shadow:var(--shadow-hover);
            border-color:rgba(199,161,107,0.35);
        }
        .business-card .card-img{
            position:relative;
            aspect-ratio:16/9;
            overflow:hidden;
        }
        .business-card .card-img img{
            width:100%;height:100%;
            object-fit:cover;
            transition:transform .3s ease;
        }
        .business-card:hover .card-img img{
            transform:scale(1.03);
        }
        .business-card .card-img::after{
            content:"";
            position:absolute;
            inset:0;
            background:linear-gradient(to top,rgba(14,14,17,0.6),transparent 55%);
            opacity:0;
            transition:opacity .3s ease;
        }
        .business-card:hover .card-img::after{
            opacity:1;
        }
        .card-tag{
            position:absolute;
            top:12px;left:12px;
            padding:3px 12px;
            background:rgba(14,14,17,0.72);
            border:1px solid rgba(199,161,107,0.45);
            border-radius:999px;
            font-size:.75rem;
            letter-spacing:.1em;
            color:var(--primary);
            z-index:2;
            backdrop-filter:blur(4px);
        }
        .business-card .card-body{
            padding:24px;
        }
        .business-card h3{
            font-family:var(--serif);
            font-size:1.25rem;
            font-weight:600;
            letter-spacing:.02em;
            margin-bottom:10px;
            line-height:1.4;
        }
        .business-card p{
            font-size:.9375rem;
            color:var(--text-secondary);
            line-height:1.7;
        }
        .card-link-row{
            display:flex;
            align-items:center;
            gap:6px;
            margin-top:16px;
            font-size:.8125rem;
            letter-spacing:.06em;
            color:var(--primary);
            opacity:0;
            transform:translateY(4px);
            transition:opacity .3s ease,transform .3s ease;
        }
        .business-card:hover .card-link-row{
            opacity:1;
            transform:translateY(0);
        }

        /* ===== Metric ===== */
        .metric-item{
            border:1px solid var(--border);
            border-radius:var(--radius-lg);
            padding:40px 24px 36px;
            text-align:center;
            background:rgba(255,255,255,0.012);
            transition:border-color .3s ease,background .3s ease;
        }
        .metric-item:hover{
            border-color:rgba(199,161,107,0.35);
            background:rgba(199,161,107,0.03);
        }
        .metric-num{
            font-family:var(--serif);
            font-size:2.75rem;
            font-weight:600;
            color:var(--primary);
            line-height:1.2;
            font-variant-numeric:tabular-nums;
            letter-spacing:.02em;
        }
        .metric-label{
            margin-top:10px;
            font-size:.875rem;
            color:var(--text-secondary);
            letter-spacing:.08em;
        }

        /* ===== Scenario ===== */
        .scenario-item{
            padding:36px 24px 32px;
            border:1px solid var(--border);
            border-radius:var(--radius-lg);
            background:var(--bg-card);
            position:relative;
            overflow:hidden;
            transition:border-color .3s ease,transform .3s ease;
        }
        .scenario-item:hover{
            border-color:rgba(199,161,107,0.35);
            transform:translateY(-2px);
        }
        .scenario-num{
            font-family:var(--serif);
            font-size:2rem;
            color:transparent;
            -webkit-text-stroke:1px rgba(199,161,107,0.7);
            margin-bottom:18px;
            font-variant-numeric:tabular-nums;
            line-height:1;
        }
        .scenario-item h3{
            font-family:var(--serif);
            font-size:1.125rem;
            font-weight:600;
            margin-bottom:10px;
            letter-spacing:.02em;
        }
        .scenario-item p{
            font-size:.875rem;
            color:var(--text-secondary);
            line-height:1.7;
        }

        /* ===== Process ===== */
        .process-steps{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            gap:32px;
        }
        .process-step{
            position:relative;
            padding:28px 0 0;
        }
        .process-step::before{
            content:"";
            position:absolute;
            top:0;left:0;
            width:40px;height:1px;
            background:var(--primary);
        }
        .process-step .step-num{
            font-family:var(--serif);
            font-size:.875rem;
            color:var(--primary);
            letter-spacing:.18em;
            display:block;
            margin-bottom:16px;
            font-variant-numeric:tabular-nums;
        }
        .process-step h3{
            font-family:var(--serif);
            font-size:1.125rem;
            font-weight:600;
            margin-bottom:10px;
            letter-spacing:.02em;
        }
        .process-step p{
            font-size:.875rem;
            color:var(--text-secondary);
            line-height:1.7;
        }
        .process-arrow{
            display:none;
        }

        /* ===== FAQ ===== */
        .faq-list{
            max-width:820px;
            margin:0 auto;
        }
        .faq-item{
            border-bottom:1px solid var(--border);
        }
        .faq-item summary{
            list-style:none;
            display:flex;
            align-items:center;
            justify-content:space-between;
            padding:26px 0;
            font-size:1.0625rem;
            font-weight:500;
            cursor:pointer;
            transition:color .2s ease;
            color:var(--text);
        }
        .faq-item summary::-webkit-details-marker{
            display:none;
        }
        .faq-item summary:hover{
            color:var(--primary);
        }
        .faq-item summary .faq-icon{
            width:12px;
            height:12px;
            border-right:1px solid var(--text-secondary);
            border-bottom:1px solid var(--text-secondary);
            transform:rotate(45deg);
            transition:transform .3s ease,border-color .3s ease;
            flex-shrink:0;
            margin-left:18px;
        }
        .faq-item[open] summary .faq-icon{
            transform:rotate(225deg);
            border-color:var(--primary);
        }
        .faq-answer{
            padding:0 0 28px;
            color:var(--text-secondary);
            font-size:.9375rem;
            line-height:1.85;
            max-width:700px;
        }
        .faq-answer p + p{
            margin-top:12px;
        }

        /* ===== CTA ===== */
        .cta-section{
            position:relative;
            padding:104px 0;
            background:
                linear-gradient(to top,rgba(14,14,17,0.92),rgba(14,14,17,0.72)),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            text-align:center;
            overflow:hidden;
        }
        .cta-section h2{
            font-family:var(--serif);
            font-size:clamp(2rem,4vw,3rem);
            font-weight:600;
            letter-spacing:.03em;
            line-height:1.3;
            margin-bottom:18px;
            position:relative;
            z-index:2;
        }
        .cta-section p{
            color:var(--text-secondary);
            max-width:620px;
            margin:0 auto 44px;
            font-size:1.0625rem;
            line-height:1.8;
            position:relative;
            z-index:2;
        }
        .btn-group{
            display:flex;
            gap:16px;
            justify-content:center;
            flex-wrap:wrap;
            position:relative;
            z-index:2;
        }
        .btn-primary{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            padding:13px 36px;
            background:var(--primary);
            color:#0E0E11;
            font-size:.9375rem;
            letter-spacing:.08em;
            font-weight:500;
            border-radius:var(--radius);
            border:1px solid transparent;
            transition:all .3s ease;
        }
        .btn-primary:hover{
            background:var(--primary-hover);
            box-shadow:0 0 24px rgba(199,161,107,0.25);
        }
        .btn-secondary{
            display:inline-flex;
            align-items:center;
            justify-content:center;
            padding:13px 36px;
            background:transparent;
            color:var(--text);
            font-size:.9375rem;
            letter-spacing:.08em;
            border:1px solid rgba(255,255,255,0.22);
            border-radius:var(--radius);
            transition:all .3s ease;
        }
        .btn-secondary:hover{
            border-color:var(--primary);
            color:var(--primary);
        }

        /* ===== Footer ===== */
        .site-footer{
            background:var(--bg-footer);
            border-top:1px solid var(--border);
            padding:80px 0 32px;
        }
        .footer-grid{
            display:grid;
            grid-template-columns:1.6fr 1fr 1fr;
            gap:48px;
            margin-bottom:56px;
        }
        .footer-brand p{
            margin-top:18px;
            color:var(--text-secondary);
            font-size:.875rem;
            line-height:1.8;
            max-width:380px;
        }
        .footer-col h3{
            font-size:.9375rem;
            font-weight:600;
            letter-spacing:.08em;
            margin-bottom:22px;
            color:var(--text);
        }
        .footer-col ul{
            list-style:none;
        }
        .footer-col ul li{
            margin-bottom:12px;
        }
        .footer-col ul a{
            font-size:.875rem;
            color:var(--text-secondary);
            transition:color .2s;
        }
        .footer-col ul a:hover{
            color:var(--primary);
        }
        .footer-contact-list li{
            font-size:.875rem;
            color:var(--text-secondary);
            display:flex;
            align-items:center;
            gap:10px;
        }
        .footer-contact-list i{
            width:16px;
            color:var(--primary);
            font-size:.875rem;
        }
        .footer-bottom{
            border-top:1px solid var(--border);
            padding-top:32px;
            display:flex;
            justify-content:space-between;
            align-items:center;
            color:var(--text-weak);
            font-size:.8125rem;
            gap:16px;
        }
        .footer-bottom a{
            color:var(--text-secondary);
            transition:color .2s;
        }
        .footer-bottom a:hover{
            color:var(--primary);
        }

        /* ===== Responsive ===== */
        @media(max-width:1024px){
            .card-grid,.scenario-grid,.metrics-grid{
                grid-template-columns:repeat(2,1fr);
            }
            .process-steps{
                grid-template-columns:repeat(2,1fr);
                gap:40px 24px;
            }
            .footer-grid{
                grid-template-columns:1fr 1fr;
                gap:40px;
            }
        }
        @media(max-width:768px){
            .nav-toggle{
                display:flex;
            }
            .main-nav{
                position:fixed;
                top:72px;left:0;right:0;
                background:rgba(14,14,17,0.98);
                flex-direction:column;
                align-items:flex-start;
                padding:32px 24px;
                gap:28px;
                border-bottom:1px solid var(--border);
                transform:translateY(-120%);
                transition:transform .35s ease;
                z-index:99;
                backdrop-filter:blur(16px);
            }
            .main-nav.open{
                transform:translateY(0);
            }
            .nav-link{
                font-size:1rem;
            }
            .cat-hero{
                padding:130px 0 72px;
            }
            .cat-hero::before{
                font-size:14rem;
                right:2%;
            }
            .section{
                padding-top:72px!important;
                padding-bottom:72px!important;
            }
            .section-header{
                flex-direction:column;
                align-items:flex-start;
                gap:16px;
                margin-bottom:40px;
            }
            .card-grid,.scenario-grid,.metrics-grid{
                grid-template-columns:1fr;
            }
            .process-steps{
                grid-template-columns:1fr;
            }
            .footer-grid{
                grid-template-columns:1fr;
                gap:32px;
            }
            .footer-bottom{
                flex-direction:column;
                align-items:flex-start;
            }
        }
        @media(max-width:520px){
            .container{
                padding-left:16px;
                padding-right:16px;
            }
            .hero-tag{
                font-size:.6875rem;
            }
            .cat-hero h1{
                font-size:2.5rem;
            }
            .cat-hero .hero-desc{
                font-size:1rem;
            }
            .metric-item{
                padding:28px 16px;
            }
            .scenario-item{
                padding:28px 20px;
            }
            .btn-group{
                flex-direction:column;
                width:100%;
            }
            .btn-primary,.btn-secondary{
                width:100%;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --bg-primary: #0E0E11;
            --bg-secondary: #16161B;
            --bg-deep: #0A0A0C;
            --accent: #C7A16B;
            --accent-hover: #D8B47F;
            --text-primary: #E8E4DE;
            --text-secondary: #9B968F;
            --text-muted: #555049;
            --border-subtle: rgba(255,255,255,0.08);
            --border-card: rgba(255,255,255,0.06);
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 8px;
            --radius-pill: 999px;
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.25);
            --transition: all 0.3s ease;
            --font-serif: "Noto Serif SC", "Source Han Serif SC", serif;
            --font-sans: system-ui, "Noto Sans SC", sans-serif;
            --header-h: 72px;
        }

        /* ========== Reset & Base ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: var(--bg-primary);
            color: var(--text-primary);
            font-family: var(--font-sans);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container-sm {
            max-width: 800px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(255,255,255,0.02);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.04);
            z-index: 100;
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(14,14,17,0.92);
            border-bottom-color: var(--border-subtle);
        }
        .header-inner {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 8px;
            height: 32px;
            background: var(--accent);
            border-radius: 2px;
            display: block;
        }
        .logo span:last-child {
            font-family: var(--font-serif);
            font-size: 1.15rem;
            letter-spacing: 0.08em;
            color: var(--text-primary);
            font-weight: 600;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-link {
            position: relative;
            font-size: 0.875rem;
            letter-spacing: 0.12em;
            color: var(--text-secondary);
            padding: 8px 0;
            white-space: nowrap;
            background: none;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 1px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .nav-link:hover {
            color: var(--text-primary);
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--accent);
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: var(--radius-sm);
            z-index: 110;
        }
        .mobile-toggle span {
            display: block;
            width: 20px;
            height: 1px;
            background: var(--text-primary);
            transition: var(--transition);
        }
        .mobile-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .mobile-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 0.9375rem;
            letter-spacing: 0.08em;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-weight: 500;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #0E0E11;
            border: 1px solid var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            border-color: var(--accent-hover);
            box-shadow: 0 0 20px rgba(199,161,107,0.2);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255,255,255,0.25);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 84vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding-top: calc(var(--header-h) + 80px);
            padding-bottom: 80px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(14,14,17,0.92) 0%, rgba(14,14,17,0.6) 50%, rgba(14,14,17,0.35) 100%),
                linear-gradient(180deg, transparent 55%, rgba(14,14,17,1) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            border: 1px solid rgba(199,161,107,0.4);
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            letter-spacing: 0.16em;
            color: var(--accent);
            margin-bottom: 24px;
        }
        .hero-title {
            font-family: var(--font-serif);
            font-size: clamp(2.5rem, 5vw, 4.25rem);
            font-weight: 700;
            line-height: 1.15;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
        }
        .hero-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-status {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 48px;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #7FA98A;
            box-shadow: 0 0 0 4px rgba(127,169,138,0.15);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% {
                box-shadow: 0 0 0 4px rgba(127,169,138,0.15);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(127,169,138,0.08);
            }
        }
        .hero-deco {
            position: absolute;
            right: 5%;
            bottom: 8%;
            font-family: var(--font-serif);
            font-size: 18rem;
            font-weight: 700;
            color: rgba(199,161,107,0.04);
            pointer-events: none;
            z-index: 1;
            line-height: 1;
            user-select: none;
        }

        /* ========== 通用区块 ========== */
        .section {
            padding-top: 96px;
            padding-bottom: 96px;
        }
        .section-alt {
            background: var(--bg-deep);
        }
        .section-head {
            margin-bottom: 56px;
            max-width: 680px;
        }
        .section-index {
            display: inline-block;
            font-family: var(--font-serif);
            font-size: 0.875rem;
            letter-spacing: 0.16em;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
        }

        /* ========== 入口卡片 ========== */
        .entry-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .entry-card:hover {
            transform: translateY(-2px);
            border-color: rgba(199,161,107,0.35);
            box-shadow: var(--shadow-hover);
        }
        .entry-card:hover::before {
            opacity: 1;
        }
        .entry-card-num {
            font-family: var(--font-serif);
            font-size: 2.5rem;
            color: var(--accent);
            opacity: 0.6;
            line-height: 1;
            margin-bottom: 20px;
            font-weight: 600;
        }
        .entry-card h3 {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .entry-card p {
            font-size: 0.9375rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== 步骤 ========== */
        .step-item {
            position: relative;
            padding-top: 8px;
        }
        .step-item::before {
            content: attr(data-step);
            font-family: var(--font-serif);
            font-size: 3rem;
            font-weight: 700;
            color: transparent;
            -webkit-text-stroke: 1px rgba(199,161,107,0.4);
            line-height: 1;
            display: block;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
            margin: 0;
        }

        /* ========== 场景卡片 ========== */
        .scene-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
        }
        .scene-card:hover {
            transform: translateY(-2px);
            border-color: rgba(199,161,107,0.35);
            box-shadow: var(--shadow-hover);
        }
        .scene-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .scene-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scene-card:hover .scene-card-img img {
            transform: scale(1.04);
        }
        .scene-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(14,14,17,0.7) 100%);
        }
        .scene-card-body {
            padding: 24px;
        }
        .scene-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            letter-spacing: 0.12em;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .scene-card-body h3 {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scene-card-body p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
            margin: 0;
        }

        /* ========== 站点构成列表 ========== */
        .compose-list {
            border-top: 1px solid var(--border-subtle);
        }
        .compose-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 32px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition);
        }
        .compose-item:hover {
            background: rgba(255,255,255,0.02);
            padding-left: 16px;
        }
        .compose-item-index {
            font-family: var(--font-serif);
            font-size: 1rem;
            color: var(--accent);
            letter-spacing: 0.08em;
            white-space: nowrap;
            padding-top: 4px;
        }
        .compose-item h3 {
            font-family: var(--font-serif);
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .compose-item p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            border-top: 1px solid var(--border-subtle);
        }
        .faq-item {
            border-bottom: 1px solid var(--border-subtle);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 24px 0;
            text-align: left;
            font-family: var(--font-serif);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-icon {
            position: relative;
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--accent);
            transition: var(--transition);
        }
        .faq-icon::before {
            top: 7px;
            left: 0;
            width: 16px;
            height: 1.5px;
        }
        .faq-icon::after {
            top: 0;
            left: 7px;
            width: 1.5px;
            height: 16px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }
        .faq-answer-inner {
            padding-bottom: 24px;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.75;
        }

        /* ========== CTA ========== */
        .cta-banner {
            position: relative;
            padding: 96px 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            text-align: center;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14,14,17,0.88) 0%, rgba(14,14,17,0.68) 100%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .cta-content h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.75rem, 3vw, 2.25rem);
            font-weight: 600;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-subtle);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 56px;
            margin-bottom: 56px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h3 {
            font-size: 0.875rem;
            letter-spacing: 0.12em;
            color: var(--text-primary);
            font-weight: 600;
            margin-bottom: 20px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-col ul a {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-contact-list li {
            font-size: 0.875rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact-list i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8125rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-secondary);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== 滚动显现 ========== */
        .reveal {
            opacity: 0;
            transform: translateY(12px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(14,14,17,0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                z-index: 99;
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .nav-link {
                width: 100%;
                padding: 14px 0;
                font-size: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.04);
            }
            .mobile-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 639px) {
            .section {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            .hero {
                min-height: 72vh;
                padding-top: calc(var(--header-h) + 48px);
                padding-bottom: 56px;
            }
            .hero-title {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-deco {
                font-size: 10rem;
                bottom: 4%;
                right: 0;
            }
            .section-head h2 {
                font-size: 1.65rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .container-sm {
                padding-left: 16px;
                padding-right: 16px;
            }
            .btn {
                width: 100%;
            }
            .hero-actions {
                flex-direction: column;
            }
        }