/* roulang page: index */
:root {
            --brand-dark: #111113;
            --brand-red: #E93A31;
            --brand-orange: #F0A202;
            --brand-warm: #F6F4F0;
            --brand-deep: #181818;
            --brand-muted: #8A8A8E;
            --brand-white: #FFFFFF;
            --brand-border: rgba(0, 0, 0, 0.08);
            --brand-border-strong: rgba(0, 0, 0, 0.14);
            --brand-radius: 16px;
            --brand-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            --brand-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --brand-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --brand-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--brand-font-sans);
            color: var(--brand-dark);
            background: var(--brand-warm);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ::selection {
            background: var(--brand-red);
            color: var(--brand-white);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: linear-gradient(135deg, #141414 0%, #3A0A0A 55%, #8C1D18 100%);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.30);
            color: var(--brand-white);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .site-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.02em;
            color: var(--brand-white);
            white-space: nowrap;
            transition: opacity 0.25s ease;
        }

        .site-logo:hover {
            opacity: 0.82;
        }

        .site-logo .logo-mark {
            color: var(--brand-red);
            margin-right: 2px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .main-nav a.nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.93rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 10px;
            position: relative;
            transition: var(--brand-transition);
            white-space: nowrap;
        }

        .main-nav a.nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--brand-white);
        }

        .main-nav a.nav-link.active {
            background: rgba(255, 255, 255, 0.16);
            color: var(--brand-white);
            box-shadow: inset 0 -2px 0 var(--brand-red);
        }

        .nav-cta {
            background: var(--brand-orange);
            color: #1a1a1a !important;
            border-radius: 9999px !important;
            padding: 8px 20px !important;
            font-weight: 700;
            letter-spacing: 0.01em;
            box-shadow: 0 4px 16px rgba(240, 162, 2, 0.35);
        }

        .nav-cta:hover {
            background: #e09100 !important;
            box-shadow: 0 6px 24px rgba(240, 162, 2, 0.5) !important;
            transform: translateY(-2px);
        }

        .hamburger {
            display: none;
            color: var(--brand-white);
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 10px;
            transition: var(--brand-transition);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.12);
        }

        .mobile-menu {
            display: none;
            background: rgba(18, 18, 18, 0.98);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0;
        }

        .mobile-menu a.nav-link {
            display: block;
            color: rgba(255, 255, 255, 0.82);
            padding: 12px 24px;
            font-size: 0.95rem;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--brand-transition);
        }

        .mobile-menu a.nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--brand-white);
        }

        .mobile-menu a.nav-link.active {
            background: rgba(233, 58, 49, 0.18);
            color: var(--brand-white);
            border-left: 3px solid var(--brand-red);
        }

        /* 板块通用 */
        .section {
            padding: 72px 0;
            position: relative;
        }

        .section-heading {
            margin-bottom: 44px;
        }

        .section-heading .eyebrow {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--brand-red);
            margin-bottom: 12px;
        }

        .section-heading h2 {
            font-size: clamp(1.6rem, 3vw, 2.25rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: var(--brand-dark);
            margin: 0 0 14px 0;
        }

        .section-heading .desc {
            font-size: 1rem;
            color: var(--brand-muted);
            max-width: 720px;
            line-height: 1.8;
            margin: 0;
        }

        /* 卡片 */
        .card {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow);
            overflow: hidden;
            transition: var(--brand-transition);
        }

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

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 9999px;
            transition: var(--brand-transition);
            letter-spacing: 0.01em;
            text-align: center;
        }

        .btn:focus-visible {
            outline: 3px solid var(--brand-orange);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--brand-red);
            color: var(--brand-white);
            box-shadow: 0 8px 24px rgba(233, 58, 49, 0.35);
            position: relative;
            overflow: hidden;
        }

        .btn-primary::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -75%;
            width: 50%;
            height: 200%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.22), transparent);
            transform: rotate(25deg);
            transition: left 0.6s ease;
        }

        .btn-primary:hover {
            background: #c22e25;
            box-shadow: 0 12px 32px rgba(233, 58, 49, 0.5);
            transform: translateY(-2px);
        }

        .btn-primary:hover::after {
            left: 125%;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(233, 58, 49, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--brand-red);
            border: 2px solid var(--brand-red);
            box-shadow: none;
        }

        .btn-outline:hover {
            background: var(--brand-red);
            color: var(--brand-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233, 58, 49, 0.3);
        }

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

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: var(--brand-deep);
            overflow: hidden;
            padding: 80px 0;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/fc27044f1d303cc3.webp') center / cover no-repeat;
            opacity: 0.55;
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17, 17, 19, 0.92) 0%, rgba(24, 24, 24, 0.78) 45%, rgba(60, 15, 12, 0.68) 100%);
            z-index: 2;
        }

        .hero-section .container {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: clamp(2rem, 5vw, 3.6rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            color: var(--brand-white);
            margin: 0 0 20px 0;
            animation: fadeUp 0.8s ease-out both;
        }

        .hero-content h1 .highlight {
            color: var(--brand-orange);
            position: relative;
        }

        .hero-content .hero-desc {
            font-size: 1.05rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.78);
            max-width: 520px;
            margin: 0 0 28px 0;
            animation: fadeUp 0.8s ease-out 0.15s both;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            animation: fadeUp 0.8s ease-out 0.3s both;
        }

        .hero-actions .btn {
            min-width: 170px;
        }

        .hero-group-hint {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 26px;
            padding: 14px 20px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.82);
            animation: fadeUp 0.8s ease-out 0.45s both;
        }

        .hero-group-hint .pulse-dot {
            width: 12px;
            height: 12px;
            background: var(--brand-orange);
            border-radius: 50%;
            position: relative;
            flex-shrink: 0;
        }

        .hero-group-hint .pulse-dot::after {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            background: rgba(240, 162, 2, 0.35);
            animation: pulseRing 1.8s ease-in-out infinite;
        }

        .hero-visual {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
            border: 1px solid rgba(255, 255, 255, 0.12);
            animation: fadeUp 0.8s ease-out 0.25s both;
        }

        .hero-visual img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .hero-visual .visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
            padding: 40px 24px 20px;
            color: var(--brand-white);
        }

        .hero-visual .visual-overlay .stat-row {
            display: flex;
            gap: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
        }

        .hero-visual .visual-overlay .stat-row strong {
            font-size: 1.15rem;
            color: var(--brand-orange);
            display: block;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes pulseRing {
            0% {
                transform: scale(1);
                opacity: 1;
            }
            100% {
                transform: scale(2.4);
                opacity: 0;
            }
        }

        /* 视频矩阵卡片 */
        .video-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .video-card .card-thumb {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--brand-deep);
        }

        .video-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .video-card:hover .card-thumb img {
            transform: scale(1.06);
        }

        .video-card .card-thumb .play-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.35);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .video-card:hover .card-thumb .play-overlay {
            opacity: 1;
        }

        .video-card .card-thumb .play-overlay .play-icon {
            width: 52px;
            height: 52px;
            background: var(--brand-red);
            color: var(--brand-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 8px 24px rgba(233, 58, 49, 0.5);
        }

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

        .video-card .card-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--brand-red);
            background: rgba(233, 58, 49, 0.08);
            padding: 3px 10px;
            border-radius: 9999px;
            margin-bottom: 8px;
        }

        .video-card .card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 2.8em;
        }

        .video-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.82rem;
            color: var(--brand-muted);
            margin-top: 10px;
        }

        .video-card .card-meta i {
            color: var(--brand-orange);
            font-size: 0.75rem;
        }

        /* 优势数据带 */
        .stats-band {
            background: var(--brand-deep);
            color: var(--brand-white);
            padding: 48px 0;
        }

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

        .stat-item {
            text-align: center;
            padding: 8px 16px;
            border-right: 1px solid rgba(255, 255, 255, 0.10);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-item .stat-number {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            letter-spacing: -0.04em;
            color: var(--brand-orange);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .stat-item .stat-label {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.65);
            letter-spacing: 0.02em;
        }

        /* 流程条 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }

        .step-item {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            padding: 28px 24px;
            position: relative;
            transition: var(--brand-transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
        }

        .step-item:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }

        .step-item .step-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--brand-red);
            color: var(--brand-white);
            border-radius: 12px;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 16px;
            box-shadow: 0 6px 18px rgba(233, 58, 49, 0.3);
        }

        .step-item .step-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--brand-dark);
            margin-bottom: 8px;
        }

        .step-item .step-desc {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.65;
        }

        /* 精选专题 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            overflow: hidden;
            box-shadow: var(--brand-shadow);
            transition: var(--brand-transition);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }

        .feature-card .feature-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .feature-card:hover .feature-img img {
            transform: scale(1.05);
        }

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

        .feature-card .feature-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--brand-red);
            background: rgba(233, 58, 49, 0.08);
            padding: 3px 12px;
            border-radius: 9999px;
            display: inline-block;
            margin-bottom: 10px;
        }

        .feature-card .feature-title {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--brand-dark);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .feature-card .feature-desc {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .feature-card .feature-link {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--brand-red);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--brand-transition);
        }

        .feature-card .feature-link:hover {
            gap: 10px;
            color: #b0281f;
        }

        /* CMS资讯列表 */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-item {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            overflow: hidden;
            box-shadow: var(--brand-shadow);
            transition: var(--brand-transition);
        }

        .news-item:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }

        .news-item .news-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--brand-deep);
        }

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

        .news-item .news-body {
            padding: 18px 20px 20px;
        }

        .news-item .news-badge {
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--brand-orange);
            background: rgba(240, 162, 2, 0.12);
            padding: 2px 10px;
            border-radius: 9999px;
            display: inline-block;
            margin-bottom: 8px;
        }

        .news-item .news-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 2.8em;
        }

        .news-item .news-excerpt {
            font-size: 0.85rem;
            color: var(--brand-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 8px 0 12px;
        }

        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--brand-muted);
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px dashed var(--brand-border-strong);
            color: var(--brand-muted);
            font-size: 0.95rem;
        }

        /* 人气榜 */
        .rank-list {
            display: grid;
            gap: 14px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--brand-white);
            border-radius: 14px;
            padding: 16px 20px;
            border: 1px solid var(--brand-border);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
            transition: var(--brand-transition);
        }

        .rank-item:hover {
            transform: translateX(4px);
            border-color: var(--brand-red);
        }

        .rank-item .rank-num {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            background: var(--brand-deep);
            color: var(--brand-white);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
        }

        .rank-item:nth-child(1) .rank-num {
            background: var(--brand-red);
            box-shadow: 0 6px 18px rgba(233, 58, 49, 0.4);
        }

        .rank-item:nth-child(2) .rank-num {
            background: #C74A2E;
            box-shadow: 0 6px 18px rgba(199, 74, 46, 0.35);
        }

        .rank-item:nth-child(3) .rank-num {
            background: var(--brand-orange);
            box-shadow: 0 6px 18px rgba(240, 162, 2, 0.35);
        }

        .rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-item .rank-title {
            font-weight: 700;
            font-size: 0.98rem;
            color: var(--brand-dark);
            line-height: 1.35;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-item .rank-heat {
            font-size: 0.8rem;
            color: var(--brand-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .rank-item .rank-heat i {
            color: var(--brand-orange);
            font-size: 0.72rem;
        }

        .rank-item .rank-btn {
            flex-shrink: 0;
            background: transparent;
            color: var(--brand-red);
            border: 1.5px solid var(--brand-red);
            border-radius: 9999px;
            padding: 6px 16px;
            font-size: 0.82rem;
            font-weight: 700;
            transition: var(--brand-transition);
        }

        .rank-item .rank-btn:hover {
            background: var(--brand-red);
            color: var(--brand-white);
        }

        /* 合作入口 */
        .partner-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .partner-card {
            background: var(--brand-white);
            border-radius: 14px;
            border: 1px solid var(--brand-border);
            padding: 22px;
            text-align: center;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
            transition: var(--brand-transition);
        }

        .partner-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }

        .partner-card .partner-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 14px;
            background: rgba(233, 58, 49, 0.08);
            color: var(--brand-red);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
        }

        .partner-card .partner-name {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--brand-dark);
            margin-bottom: 4px;
        }

        .partner-card .partner-desc {
            font-size: 0.8rem;
            color: var(--brand-muted);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }

        .faq-item {
            background: var(--brand-white);
            border-radius: 14px;
            border: 1px solid var(--brand-border);
            overflow: hidden;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.03);
            transition: var(--brand-transition);
        }

        .faq-item:hover {
            border-color: var(--brand-border-strong);
        }

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 0.98rem;
            color: var(--brand-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            outline: none;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary i {
            color: var(--brand-red);
            font-size: 0.85rem;
            transition: transform 0.35s ease;
        }

        .faq-item[open] summary i {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.75;
        }

        /* 保障条 */
        .guarantee-band {
            background: var(--brand-warm);
            border-top: 1px solid var(--brand-border);
            border-bottom: 1px solid var(--brand-border);
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 18px;
            background: var(--brand-white);
            border-radius: 14px;
            border: 1px solid var(--brand-border);
        }

        .guarantee-item i {
            font-size: 1.4rem;
            color: var(--brand-orange);
            flex-shrink: 0;
        }

        .guarantee-item .guarantee-text {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--brand-dark);
        }

        /* 多端支持 */
        .device-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .device-card {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--brand-shadow);
            transition: var(--brand-transition);
        }

        .device-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }

        .device-card .device-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 18px;
            background: var(--brand-deep);
            color: var(--brand-white);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }

        .device-card .device-name {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--brand-dark);
            margin-bottom: 6px;
        }

        .device-card .device-desc {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.65;
        }

        /* CTA区 */
        .cta-section {
            background: var(--brand-deep);
            color: var(--brand-white);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/0e08bfe111da2d2f.jpg') center / cover no-repeat;
            opacity: 0.25;
            z-index: 1;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--brand-white);
            margin: 0 0 16px 0;
        }

        .cta-section .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            gap: 14px;
            max-width: 560px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 16px 22px;
            border-radius: 9999px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--brand-white);
            font-size: 0.95rem;
            transition: var(--brand-transition);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-form input:focus {
            border-color: var(--brand-orange);
            background: rgba(255, 255, 255, 0.16);
            box-shadow: 0 0 0 4px rgba(240, 162, 2, 0.15);
        }

        .cta-form .btn {
            min-width: 140px;
        }

        /* Footer */
        .site-footer {
            background: #0d0d0f;
            color: rgba(255, 255, 255, 0.6);
            padding: 48px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .site-footer .footer-brand {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--brand-white);
            margin-bottom: 10px;
        }

        .site-footer .footer-brand span {
            color: var(--brand-red);
        }

        .site-footer .footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.45);
        }

        .site-footer .footer-heading {
            font-weight: 700;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 8px;
        }

        .site-footer .footer-links a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            transition: var(--brand-transition);
        }

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

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .video-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-band .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                padding-bottom: 20px;
            }
            .stat-item:nth-child(3),
            .stat-item:nth-child(4) {
                border-bottom: none;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .device-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header .container {
                height: 60px;
            }
            .main-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu.show {
                display: block;
            }
            .hero-section .container {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-section {
                padding: 60px 0;
                min-height: auto;
            }
            .hero-visual img {
                height: 280px;
            }
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .partner-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .device-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 14px 16px;
            }
            .rank-item .rank-btn {
                margin-left: auto;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input {
                width: 100%;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .video-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-band .stats-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-item {
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                padding-bottom: 16px;
            }
            .stat-item:last-child {
                border-bottom: none;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .section-heading h2 {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category1 */
:root {
            --brand-dark: #111113;
            --brand-red: #E93A31;
            --brand-orange: #F0A202;
            --brand-warm: #F6F4F0;
            --brand-deep: #181818;
            --brand-muted: #8A8A8E;
            --brand-white: #FFFFFF;
            --brand-border: rgba(0, 0, 0, 0.08);
            --brand-border-strong: rgba(0, 0, 0, 0.14);
            --brand-radius: 16px;
            --brand-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            --brand-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --brand-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --brand-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--brand-font-sans);
            color: var(--brand-dark);
            background: var(--brand-warm);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--brand-transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: linear-gradient(135deg, #141414 0%, #3A0A0A 55%, #8C1D18 100%);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.30);
            color: var(--brand-white);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.02em;
            color: var(--brand-white);
            white-space: nowrap;
            transition: opacity 0.25s ease;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .site-logo:hover {
            opacity: 0.82;
        }
        .site-logo .logo-mark {
            color: var(--brand-red);
            font-size: 1.5rem;
            line-height: 1;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .main-nav a.nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.93rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 10px;
            position: relative;
            transition: var(--brand-transition);
            white-space: nowrap;
        }
        .main-nav a.nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--brand-white);
        }
        .main-nav a.nav-link.active {
            background: rgba(255, 255, 255, 0.16);
            color: var(--brand-white);
            box-shadow: inset 0 -2px 0 var(--brand-red);
        }
        .nav-cta {
            background: var(--brand-orange);
            color: #1a1a1a !important;
            border-radius: 9999px !important;
            padding: 8px 20px !important;
            font-weight: 700;
            letter-spacing: 0.01em;
            box-shadow: 0 4px 16px rgba(240, 162, 2, 0.35);
        }
        .nav-cta:hover {
            background: #e09100 !important;
            box-shadow: 0 6px 24px rgba(240, 162, 2, 0.5) !important;
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            color: var(--brand-white);
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 10px;
            transition: var(--brand-transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .mobile-menu {
            display: none;
            background: rgba(18, 18, 18, 0.98);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0;
        }
        .mobile-menu a.nav-link {
            display: block;
            color: rgba(255, 255, 255, 0.82);
            padding: 12px 24px;
            font-size: 0.95rem;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--brand-transition);
        }
        .mobile-menu a.nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--brand-white);
        }
        .mobile-menu a.nav-link.active {
            background: rgba(233, 58, 49, 0.18);
            color: var(--brand-white);
            border-left: 3px solid var(--brand-red);
        }
        /* 板块通用 */
        .section {
            padding: 72px 0;
            position: relative;
        }
        .section-alt {
            background: var(--brand-white);
        }
        .section-deep {
            background: var(--brand-deep);
            color: var(--brand-white);
        }
        .section-heading {
            margin-bottom: 44px;
        }
        .section-heading .eyebrow {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--brand-red);
            margin-bottom: 12px;
        }
        .section-heading h2 {
            font-size: clamp(1.6rem, 3vw, 2.25rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: var(--brand-dark);
            margin: 0 0 14px 0;
        }
        .section-deep .section-heading h2 {
            color: var(--brand-white);
        }
        .section-heading .desc {
            font-size: 1rem;
            color: var(--brand-muted);
            max-width: 720px;
            line-height: 1.8;
            margin: 0;
        }
        .section-deep .section-heading .desc {
            color: rgba(255, 255, 255, 0.65);
        }
        /* 卡片 */
        .card {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow);
            overflow: hidden;
            transition: var(--brand-transition);
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }
        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 14px 28px;
            border-radius: 12px;
            transition: var(--brand-transition);
            letter-spacing: 0.01em;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--brand-red);
            color: var(--brand-white);
            box-shadow: 0 4px 16px rgba(233, 58, 49, 0.35);
        }
        .btn-primary:hover {
            background: #c02a22;
            box-shadow: 0 8px 28px rgba(233, 58, 49, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--brand-red);
            border: 2px solid var(--brand-red);
        }
        .btn-outline:hover {
            background: var(--brand-red);
            color: var(--brand-white);
            transform: translateY(-2px);
        }
        .btn-light {
            background: var(--brand-white);
            color: var(--brand-dark);
            border: 2px solid var(--brand-border);
        }
        .btn-light:hover {
            border-color: var(--brand-orange);
            box-shadow: 0 6px 24px rgba(0,0,0,0.15);
            transform: translateY(-2px);
        }
        .btn:focus-visible {
            outline: 3px solid var(--brand-orange);
            outline-offset: 2px;
        }
        /* 徽章 */
        .badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 9999px;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .badge-red {
            background: rgba(233, 58, 49, 0.12);
            color: var(--brand-red);
        }
        .badge-orange {
            background: rgba(240, 162, 2, 0.15);
            color: #b97b00;
        }
        .badge-dark {
            background: rgba(17, 17, 19, 0.08);
            color: var(--brand-dark);
        }
        .badge-white {
            background: rgba(255, 255, 255, 0.2);
            color: var(--brand-white);
        }
        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--brand-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--brand-red);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--brand-dark);
        }
        .breadcrumb .sep {
            color: var(--brand-border-strong);
        }
        .breadcrumb .current {
            color: var(--brand-dark);
            font-weight: 600;
        }
        /* 分类 H1 区 */
        .category-hero {
            background: var(--brand-white);
            border-bottom: 1px solid var(--brand-border);
            padding: 56px 0 44px;
        }
        .category-hero h1 {
            font-size: clamp(2rem, 5vw, 3.6rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--brand-dark);
            margin: 0 0 16px 0;
        }
        .category-hero .sub-desc {
            font-size: 1.05rem;
            color: var(--brand-muted);
            max-width: 760px;
            line-height: 1.8;
            margin: 0;
        }
        /* chips 筛选 */
        .chips-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--brand-muted);
            background: var(--brand-white);
            border: 1px solid var(--brand-border);
            transition: var(--brand-transition);
            cursor: pointer;
        }
        .chip:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
            background: rgba(233, 58, 49, 0.04);
        }
        .chip.active {
            background: var(--brand-red);
            color: var(--brand-white);
            border-color: var(--brand-red);
        }
        .chip i {
            font-size: 0.8rem;
        }
        /* 视频卡片 */
        .video-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow);
            overflow: hidden;
            transition: var(--brand-transition);
        }
        .video-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }
        .video-card-link {
            display: flex;
            flex-direction: column;
            height: 100%;
            color: inherit;
        }
        .video-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--brand-deep);
        }
        .video-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .video-card:hover .video-card-img img {
            transform: scale(1.06);
        }
        .video-card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(17, 17, 19, 0.75);
            color: var(--brand-white);
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 9999px;
            letter-spacing: 0.03em;
            backdrop-filter: blur(4px);
        }
        .video-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .video-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.4;
            color: var(--brand-dark);
            margin: 0 0 8px 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .video-card-body p {
            font-size: 0.88rem;
            color: var(--brand-muted);
            line-height: 1.65;
            margin: 0 0 14px 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .video-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 0.8rem;
            color: var(--brand-muted);
            border-top: 1px solid var(--brand-border);
            padding-top: 12px;
            flex-wrap: wrap;
        }
        .video-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .video-card-meta .heat {
            color: var(--brand-red);
            font-weight: 600;
        }
        /* 榜单 */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--brand-white);
            border-radius: 14px;
            border: 1px solid var(--brand-border);
            padding: 16px 20px;
            transition: var(--brand-transition);
        }
        .rank-item:hover {
            border-color: var(--brand-red);
            transform: translateX(4px);
            box-shadow: var(--brand-shadow);
        }
        .rank-number {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--brand-red);
            min-width: 48px;
            text-align: center;
            letter-spacing: -0.03em;
        }
        .rank-content {
            flex: 1;
            min-width: 0;
        }
        .rank-content h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-dark);
            margin: 0 0 4px 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-content .rank-meta {
            font-size: 0.8rem;
            color: var(--brand-muted);
            display: flex;
            gap: 14px;
        }
        .rank-action {
            flex-shrink: 0;
        }
        .rank-action a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 700;
            color: var(--brand-red);
            padding: 8px 16px;
            border: 1px solid var(--brand-red);
            border-radius: 8px;
            transition: var(--brand-transition);
        }
        .rank-action a:hover {
            background: var(--brand-red);
            color: var(--brand-white);
        }
        /* 专题场景 */
        .topic-card {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            overflow: hidden;
            box-shadow: var(--brand-shadow);
            transition: var(--brand-transition);
            padding: 0 24px 0 0;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }
        .topic-card-img {
            width: 240px;
            min-height: 160px;
            flex-shrink: 0;
            overflow: hidden;
            position: relative;
        }
        .topic-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .topic-card-body {
            flex: 1;
            padding: 16px 0;
        }
        .topic-card-body .topic-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--brand-red);
            background: rgba(233, 58, 49, 0.08);
            padding: 4px 12px;
            border-radius: 9999px;
            margin-bottom: 8px;
        }
        .topic-card-body h3 {
            font-size: 1.2rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--brand-dark);
            margin: 0 0 6px 0;
        }
        .topic-card-body p {
            font-size: 0.9rem;
            color: var(--brand-muted);
            margin: 0 0 12px 0;
            line-height: 1.65;
        }
        .topic-card-body a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--brand-red);
        }
        .topic-card-body a:hover {
            gap: 10px;
            color: var(--brand-dark);
        }
        /* 指南步骤 */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 760px;
        }
        .guide-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: var(--brand-white);
            border-radius: 12px;
            border: 1px solid var(--brand-border);
            padding: 18px 20px;
            transition: var(--brand-transition);
        }
        .guide-item:hover {
            border-color: var(--brand-red);
        }
        .guide-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--brand-red);
            color: var(--brand-white);
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .guide-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--brand-dark);
            margin: 0 0 4px 0;
        }
        .guide-item p {
            font-size: 0.88rem;
            color: var(--brand-muted);
            margin: 0;
            line-height: 1.65;
        }
        /* FAQ */
        .faq-list {
            max-width: 780px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--brand-white);
            border-radius: 14px;
            border: 1px solid var(--brand-border);
            overflow: hidden;
            transition: var(--brand-transition);
        }
        .faq-item:hover {
            border-color: var(--brand-border-strong);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--brand-dark);
            cursor: pointer;
            transition: var(--brand-transition);
            width: 100%;
            text-align: left;
            background: none;
        }
        .faq-question:hover {
            color: var(--brand-red);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: rgba(233, 58, 49, 0.08);
            color: var(--brand-red);
            font-size: 0.8rem;
            transition: var(--brand-transition);
        }
        .faq-item.active .faq-icon {
            background: var(--brand-red);
            color: var(--brand-white);
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer p {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--brand-muted);
            margin: 0;
            line-height: 1.75;
        }
        /* CTA */
        .cta-panel {
            background: linear-gradient(135deg, #141414 0%, #3A0A0A 55%, #8C1D18 100%);
            border-radius: var(--brand-radius);
            padding: 48px 40px;
            color: var(--brand-white);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
        }
        .cta-panel h2 {
            font-size: clamp(1.4rem, 2vw, 1.8rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin: 0 0 8px 0;
        }
        .cta-panel p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
            max-width: 480px;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .cta-form input {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 14px 18px;
            color: var(--brand-white);
            font-size: 0.9rem;
            min-width: 240px;
            transition: var(--brand-transition);
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .cta-form input:focus {
            border-color: var(--brand-orange);
            background: rgba(255, 255, 255, 0.18);
            outline: 2px solid rgba(240, 162, 2, 0.4);
        }
        .cta-form .btn-orange {
            background: var(--brand-orange);
            color: #1a1a1a;
            border-radius: 12px;
            padding: 14px 28px;
            font-weight: 700;
            font-size: 0.92rem;
            transition: var(--brand-transition);
            box-shadow: 0 4px 16px rgba(240, 162, 2, 0.3);
        }
        .cta-form .btn-orange:hover {
            background: #e09100;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(240, 162, 2, 0.5);
        }
        /* 页脚 */
        .site-footer {
            background: var(--brand-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 28px;
        }
        .site-footer .container {
            padding-bottom: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--brand-white);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .footer-brand span {
            color: var(--brand-red);
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            margin: 0;
            max-width: 360px;
        }
        .footer-heading {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--brand-white);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--brand-transition);
        }
        .footer-links a:hover {
            color: var(--brand-white);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }
        /* 空态 */
        .empty-state {
            background: var(--brand-white);
            border: 1px dashed var(--brand-border-strong);
            border-radius: var(--brand-radius);
            padding: 36px 24px;
            text-align: center;
            font-size: 0.95rem;
            color: var(--brand-muted);
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .topic-card-img {
                width: 180px;
                min-height: 140px;
            }
            .cta-panel {
                padding: 36px 28px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu.open {
                display: block;
            }
            .section {
                padding: 52px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .topic-card {
                flex-direction: column;
                padding: 0 0 20px 0;
            }
            .topic-card-img {
                width: 100%;
                min-height: auto;
                aspect-ratio: 16 / 9;
            }
            .topic-card-body {
                padding: 16px 20px 0;
            }
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 20px;
            }
            .cta-form {
                width: 100%;
            }
            .cta-form input {
                min-width: 0;
                flex: 1;
            }
            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 14px 16px;
            }
            .rank-number {
                min-width: 36px;
                font-size: 1.3rem;
            }
            .rank-action {
                width: 100%;
            }
            .rank-action a {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header .container {
                height: 60px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .category-hero {
                padding: 40px 0 32px;
            }
            .category-hero h1 {
                font-size: clamp(1.6rem, 7vw, 2.2rem);
            }
            .chip {
                padding: 8px 14px;
                font-size: 0.78rem;
            }
            .cta-form {
                flex-direction: column;
                width: 100%;
            }
            .cta-form input {
                width: 100%;
                min-width: 0;
            }
            .cta-form .btn-orange {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --brand-dark: #111113;
            --brand-red: #E93A31;
            --brand-orange: #F0A202;
            --brand-warm: #F6F4F0;
            --brand-deep: #181818;
            --brand-muted: #8A8A8E;
            --brand-white: #FFFFFF;
            --brand-border: rgba(0, 0, 0, 0.08);
            --brand-border-strong: rgba(0, 0, 0, 0.14);
            --brand-radius: 16px;
            --brand-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
            --brand-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --brand-font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --brand-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--brand-font-sans);
            color: var(--brand-dark);
            background: var(--brand-warm);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--brand-transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: linear-gradient(135deg, #141414 0%, #3A0A0A 55%, #8C1D18 100%);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.30);
            color: var(--brand-white);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .site-logo {
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: -0.02em;
            color: var(--brand-white);
            white-space: nowrap;
            transition: opacity 0.25s ease;
        }
        .site-logo:hover {
            opacity: 0.82;
        }
        .site-logo .logo-mark {
            color: var(--brand-red);
            margin-right: 2px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .main-nav a.nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.93rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 10px;
            position: relative;
            transition: var(--brand-transition);
            white-space: nowrap;
        }
        .main-nav a.nav-link:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--brand-white);
        }
        .main-nav a.nav-link.active {
            background: rgba(255, 255, 255, 0.16);
            color: var(--brand-white);
            box-shadow: inset 0 -2px 0 var(--brand-red);
        }
        .nav-cta {
            background: var(--brand-orange);
            color: #1a1a1a !important;
            border-radius: 9999px !important;
            padding: 8px 20px !important;
            font-weight: 700;
            letter-spacing: 0.01em;
            box-shadow: 0 4px 16px rgba(240, 162, 2, 0.35);
        }
        .nav-cta:hover {
            background: #e09100 !important;
            box-shadow: 0 6px 24px rgba(240, 162, 2, 0.5) !important;
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            color: var(--brand-white);
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 10px;
            transition: var(--brand-transition);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .mobile-menu {
            display: none;
            background: rgba(18, 18, 18, 0.98);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 0;
        }
        .mobile-menu a.nav-link {
            display: block;
            color: rgba(255, 255, 255, 0.82);
            padding: 12px 24px;
            font-size: 0.95rem;
            font-weight: 500;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--brand-transition);
        }
        .mobile-menu a.nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--brand-white);
        }
        .mobile-menu a.nav-link.active {
            background: rgba(233, 58, 49, 0.18);
            color: var(--brand-white);
            border-left: 3px solid var(--brand-red);
        }

        /* 板块通用 */
        .section {
            padding: 56px 0;
            position: relative;
        }
        .section-heading {
            margin-bottom: 36px;
        }
        .section-heading .eyebrow {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--brand-red);
            margin-bottom: 12px;
        }
        .section-heading h2 {
            font-size: clamp(1.6rem, 3vw, 2.25rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            color: var(--brand-dark);
            margin: 0 0 14px 0;
        }
        .section-heading .desc {
            font-size: 1rem;
            color: var(--brand-muted);
            max-width: 720px;
            line-height: 1.8;
            margin: 0;
        }

        /* 卡片基础 */
        .card {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow);
            overflow: hidden;
            transition: var(--brand-transition);
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }

        /* 文章页特有样式 */
        .article-hero {
            background: var(--brand-white);
            padding: 48px 0 32px;
            border-bottom: 1px solid var(--brand-border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 0.875rem;
            color: var(--brand-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--brand-red);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--brand-dark);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .breadcrumb .sep {
            color: var(--brand-border-strong);
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: var(--brand-dark);
            font-weight: 600;
            max-width: 360px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-hero h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.3;
            color: var(--brand-dark);
            margin: 0;
            max-width: 900px;
        }

        .article-meta-section {
            padding: 20px 0;
            background: var(--brand-warm);
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px 28px;
            background: var(--brand-white);
            border-radius: 12px;
            border: 1px solid var(--brand-border);
            padding: 16px 24px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--brand-muted);
            font-weight: 500;
        }
        .article-meta .meta-item i {
            color: var(--brand-red);
            font-size: 0.95rem;
        }
        .article-meta .meta-share {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .meta-share .share-label {
            font-size: 0.8rem;
            color: var(--brand-muted);
            font-weight: 600;
        }
        .meta-share .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-muted);
            background: var(--brand-warm);
            border: 1px solid var(--brand-border);
            transition: var(--brand-transition);
            font-size: 0.9rem;
        }
        .meta-share .share-btn:hover {
            background: var(--brand-red);
            color: #fff;
            border-color: var(--brand-red);
            transform: translateY(-2px);
        }

        .article-content-section {
            padding: 40px 0 56px;
            background: var(--brand-warm);
        }
        .article-body {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow);
            padding: 48px 56px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: #2a2a2e;
            max-width: 860px;
            margin: 0 auto;
        }
        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--brand-dark);
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--brand-warm);
        }
        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--brand-dark);
            margin: 32px 0 12px;
        }
        .article-body p {
            margin: 0 0 18px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 24px;
            padding: 0;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 24px;
            border-left: 4px solid var(--brand-red);
            background: #fdf4f3;
            border-radius: 0 12px 12px 0;
            font-style: normal;
            color: #5c2a26;
            font-weight: 500;
        }
        .article-body img {
            border-radius: 12px;
            margin: 24px auto;
            box-shadow: 0 4px 16px rgba(0,0,0,0.08);
        }
        .article-body figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--brand-muted);
            margin-top: -16px;
            margin-bottom: 24px;
        }
        .article-body a {
            color: var(--brand-red);
            font-weight: 600;
            border-bottom: 1px solid rgba(233,58,49,0.3);
        }
        .article-body a:hover {
            border-bottom-color: var(--brand-red);
            color: #c0271f;
        }
        .article-empty {
            text-align: center;
            padding: 60px 24px;
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow);
        }
        .article-empty .empty-icon {
            font-size: 2.5rem;
            color: var(--brand-border-strong);
            margin-bottom: 16px;
        }
        .article-empty h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--brand-dark);
            margin-bottom: 10px;
        }
        .article-empty p {
            color: var(--brand-muted);
            margin-bottom: 20px;
        }
        .article-empty .btn-return {
            display: inline-block;
            background: var(--brand-red);
            color: #fff;
            padding: 10px 28px;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--brand-transition);
        }
        .article-empty .btn-return:hover {
            background: #c0271f;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(233,58,49,0.35);
        }

        .article-tags-section {
            padding: 24px 0 40px;
            background: var(--brand-warm);
        }
        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            max-width: 860px;
            margin: 0 auto;
        }
        .article-tags .tag-label {
            font-size: 0.875rem;
            color: var(--brand-muted);
            font-weight: 600;
            margin-right: 4px;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--brand-white);
            border: 1px solid var(--brand-border);
            color: var(--brand-dark);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 9999px;
            transition: var(--brand-transition);
        }
        .article-tags .tag:hover {
            border-color: var(--brand-red);
            color: var(--brand-red);
            transform: translateY(-1px);
        }

        .related-section {
            padding: 56px 0;
            background: var(--brand-white);
            border-top: 1px solid var(--brand-border);
            border-bottom: 1px solid var(--brand-border);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--brand-white);
            border-radius: var(--brand-radius);
            border: 1px solid var(--brand-border);
            box-shadow: var(--brand-shadow);
            overflow: hidden;
            transition: var(--brand-transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow-lg);
        }
        .related-card .card-cover {
            aspect-ratio: 16/9;
            background: var(--brand-deep);
            position: relative;
            overflow: hidden;
        }
        .related-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .related-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-cat {
            font-size: 0.75rem;
            color: var(--brand-red);
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }
        .related-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.3s ease;
        }
        .related-card:hover .card-title {
            color: var(--brand-red);
        }
        .related-card .card-excerpt {
            font-size: 0.875rem;
            color: var(--brand-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
            flex: 1;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--brand-muted);
        }
        .related-card .card-link {
            color: var(--brand-red);
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--brand-transition);
        }
        .related-card .card-link:hover {
            color: #c0271f;
            letter-spacing: 0.02em;
        }

        .post-nav-section {
            padding: 40px 0;
            background: var(--brand-warm);
        }
        .post-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            max-width: 860px;
            margin: 0 auto;
        }
        .post-nav-card {
            background: var(--brand-white);
            border-radius: 14px;
            border: 1px solid var(--brand-border);
            padding: 20px 24px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
            transition: var(--brand-transition);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .post-nav-card:hover {
            border-color: var(--brand-red);
            box-shadow: var(--brand-shadow);
            transform: translateY(-2px);
        }
        .post-nav-card .nav-arrow {
            font-size: 1.2rem;
            color: var(--brand-red);
            flex-shrink: 0;
        }
        .post-nav-card .nav-label {
            font-size: 0.75rem;
            color: var(--brand-muted);
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 4px;
        }
        .post-nav-card .nav-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--brand-dark);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-nav-card:hover .nav-title {
            color: var(--brand-red);
        }
        .post-nav-card.nav-placeholder {
            opacity: 0.55;
            pointer-events: none;
            cursor: default;
        }
        .post-nav-card.nav-placeholder:hover {
            transform: none;
            border-color: var(--brand-border);
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        }

        .cta-section {
            padding: 64px 0;
            background: var(--brand-deep);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -30%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(233,58,49,0.25) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-left h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .cta-left p {
            color: rgba(255,255,255,0.65);
            font-size: 0.95rem;
            line-height: 1.8;
            margin: 0;
            max-width: 480px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .subscribe-form input[type="text"],
        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: 10px;
            padding: 12px 16px;
            color: #fff;
            font-size: 0.9rem;
            transition: var(--brand-transition);
        }
        .subscribe-form input::placeholder {
            color: rgba(255,255,255,0.4);
        }
        .subscribe-form input:focus {
            border-color: var(--brand-orange);
            background: rgba(255,255,255,0.12);
            box-shadow: 0 0 0 3px rgba(240,162,2,0.2);
        }
        .subscribe-form .btn-subscribe {
            background: var(--brand-orange);
            color: #1a1a1a;
            padding: 12px 28px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: var(--brand-transition);
            white-space: nowrap;
        }
        .subscribe-form .btn-subscribe:hover {
            background: #e09100;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240,162,2,0.4);
        }

        .disclaimer-section {
            padding: 28px 0;
            background: var(--brand-warm);
            border-top: 1px solid var(--brand-border);
        }
        .disclaimer-box {
            max-width: 860px;
            margin: 0 auto;
            background: rgba(255,255,255,0.6);
            border-radius: 12px;
            border: 1px solid var(--brand-border);
            padding: 16px 22px;
            text-align: center;
        }
        .disclaimer-box p {
            font-size: 0.8rem;
            color: var(--brand-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* 页脚 */
        .site-footer {
            background: var(--brand-dark);
            color: rgba(255,255,255,0.75);
            padding: 56px 0 28px;
            border-top: 4px solid var(--brand-red);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-weight: 800;
            font-size: 1.15rem;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .footer-brand span {
            color: var(--brand-red);
            margin-right: 4px;
        }
        .footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.55);
            max-width: 360px;
            margin: 0;
        }
        .footer-heading {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            transition: var(--brand-transition);
        }
        .footer-links a:hover {
            color: var(--brand-orange);
            padding-left: 4px;
        }
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.78rem;
            color: rgba(255,255,255,0.4);
            margin: 0;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-body {
                padding: 36px 32px;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: block;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-body {
                padding: 28px 20px;
                font-size: 0.98rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .article-meta .meta-share {
                margin-left: 0;
                width: 100%;
                justify-content: flex-start;
            }
            .post-nav {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .breadcrumb .current {
                max-width: 200px;
            }
            .article-hero h1 {
                font-size: clamp(1.5rem, 5vw, 2rem);
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header .container {
                height: 58px;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .section {
                padding: 40px 0;
            }
            .article-body {
                padding: 22px 16px;
                border-radius: 12px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input[type="text"],
            .subscribe-form input[type="email"] {
                min-width: auto;
                width: 100%;
            }
            .subscribe-form .btn-subscribe {
                width: 100%;
            }
        }