:root {
            --primary: #0891b2;
            --accent: #0ea5e9;
            --bg: #ecfeff;
            --text: #083344;
            --card-bg: #ffffff;
            --shadow-heavy: 0 20px 35px -8px rgba(8, 51, 68, 0.25), 0 10px 15px -6px rgba(8, 51, 68, 0.15);
            --shadow-soft: 0 10px 25px -5px rgba(8, 51, 68, 0.15);
            --gradient-highlight: linear-gradient(145deg, #ffffff 0%, #f0f9ff 100%);
            --font-title: 'Inter', sans-serif;
            --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
        }

        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
        }

        /* 拟物厚重感全局 */
        .card, .hero-section, .feature-card, .timeline-item, .cta-box {
            background: var(--card-bg);
            box-shadow: var(--shadow-heavy);
            border-radius: 24px;
            border: 1px solid rgba(255,255,255,0.7);
            backdrop-filter: blur(2px);
        }

        h1, h2, h3, .navbar-brand {
            font-family: var(--font-title);
            font-weight: 900;
            letter-spacing: -0.02em;
        }

        .data-text {
            font-family: var(--font-mono);
            font-weight: 600;
            font-size: 1.8rem;
            color: var(--primary);
        }

        /* 导航栏吸顶效果 */
        .navbar-custom {
            transition: all 0.35s ease;
            background: rgba(236, 254, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(8, 145, 178, 0.15);
            padding: 1rem 0;
        }
        .navbar-custom.scrolled {
            background: rgba(236, 254, 255, 0.95);
            box-shadow: 0 6px 20px rgba(8, 51, 68, 0.15);
            padding: 0.6rem 0;
        }

        /* 导航品牌名完整连续 */
        .navbar-brand {
            font-size: 1.75rem;
            font-weight: 900;
            color: var(--text);
        }
        .navbar-brand i {
            margin-right: 8px;
            color: var(--primary);
        }

        .nav-link {
            font-weight: 600;
            color: var(--text);
            margin: 0 0.5rem;
        }
        .nav-link:hover { color: var(--primary); }

        /* Hero 滚动关键词标签云 */
        .hero-tagcloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            padding: 2rem 0;
            animation: tagFloat 8s ease-in-out infinite alternate;
        }
        @keyframes tagFloat {
            0% { transform: translateY(0); }
            100% { transform: translateY(-10px); }
        }
        .tag-item {
            background: rgba(255,255,255,0.8);
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 8px 18px rgba(8, 145, 178, 0.2);
            border: 1px solid rgba(255,255,255,0.9);
            backdrop-filter: blur(4px);
            font-size: 1rem;
        }

        /* 三栏卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 30px;
            padding: 0 20px;
        }

        .feature-card {
            padding: 2rem 1.5rem;
            transition: all 0.25s ease;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-8px);
        }

        /* 图片hover放大遮罩 */
        .img-hover-wrapper {
            overflow: hidden;
            border-radius: 18px;
            position: relative;
            aspect-ratio: 4 / 3;
            background: #dff3fe;
        }
        .img-hover-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
        }
        .img-hover-wrapper:hover img {
            transform: scale(1.1);
        }
        .img-hover-wrapper .overlay-text {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8, 51, 68, 0.7), transparent 70%);
            opacity: 0;
            transition: opacity 0.3s;
            display: flex;
            align-items: flex-end;
            padding: 1.2rem;
            color: white;
            font-weight: 700;
            font-size: 1.2rem;
        }
        .img-hover-wrapper:hover .overlay-text {
            opacity: 1;
        }

        /* 时间线 */
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(var(--primary), var(--accent));
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            padding: 1.5rem 1.8rem;
            margin-bottom: 2rem;
            border-radius: 18px;
            background: var(--gradient-highlight);
            box-shadow: var(--shadow-soft);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -27px;
            top: 25px;
            width: 16px;
            height: 16px;
            background: var(--accent);
            border-radius: 50%;
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary);
        }

        /* 标签页切换 */
        .tab-panel .nav-tabs {
            border-bottom: 2px solid rgba(8, 145, 178, 0.2);
        }
        .tab-panel .nav-link {
            border-radius: 30px;
            font-weight: 700;
            padding: 0.6rem 1.6rem;
            color: var(--text);
        }
        .tab-panel .nav-link.active {
            background: var(--primary);
            color: white;
        }

        /* 锚点偏移 */
        section {
            scroll-margin-top: 80px;
        }

        /* 卡片错落渐显 */
        .reveal-card {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal-card.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .delay-1 { transition-delay: 0.1s; }
        .delay-2 { transition-delay: 0.2s; }
        .delay-3 { transition-delay: 0.3s; }

        /* CTA */
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            border-radius: 40px;
            padding: 3rem;
        }
        .cta-box .btn {
            background: white;
            color: var(--primary);
            font-weight: 800;
            border: none;
            padding: 0.8rem 2.5rem;
            border-radius: 60px;
        }

        footer {
            background: #e0f2fe;
            color: var(--text);
        }

        .friend-links {
            background: rgba(255,255,255,0.5);
            padding: 1.5rem;
            border-radius: 30px;
            box-shadow: var(--shadow-soft);
        }

        /* 渐变光晕装饰 */
        .bg-glow {
            background: radial-gradient(circle at 20% 30%, rgba(14,165,233,0.15) 0%, transparent 40%),
                        radial-gradient(circle at 90% 70%, rgba(8,145,178,0.2) 0%, transparent 45%);
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .navbar-brand { font-size: 1.3rem; }
            .hero-section h1 { font-size: 2.5rem; }
        }

/* --- 子页面追加 --- */
.rank-hero {
            padding: 80px 0 60px;
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }
.rank-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
.rank-hero h1 {
            font-weight: 800;
            font-size: 2.8rem;
            color: var(--text);
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }
.rank-hero p.lead {
            color: rgba(8, 51, 68, 0.7);
            max-width: 700px;
            position: relative;
            z-index: 1;
        }
.rank-tabs {
            padding: 40px 0 20px;
            background: var(--bg);
        }
.rank-tabs .tab-btn {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 8px 24px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            margin-right: 10px;
            cursor: pointer;
        }
.rank-tabs .tab-btn:hover, .rank-tabs .tab-btn.active {
            background: var(--primary);
            color: #fff;
        }
.rank-section {
            padding: 20px 0 60px;
            background: var(--bg);
        }
.rank-card {
            background: var(--card-bg);
            border-radius: 16px;
            box-shadow: var(--shadow-soft);
            padding: 24px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 20px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-left: 4px solid var(--primary);
        }
.rank-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-heavy);
        }
.rank-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
            min-width: 60px;
            text-align: center;
            font-family: var(--font-mono);
        }
.rank-number.top-1 {
            color: #f59e0b;
            font-size: 2.5rem;
        }
.rank-number.top-2 {
            color: #94a3b8;
            font-size: 2.3rem;
        }
.rank-number.top-3 {
            color: #d97706;
            font-size: 2.1rem;
        }
.rank-thumb {
            width: 90px;
            height: 120px;
            object-fit: cover;
            border-radius: 10px;
            box-shadow: var(--shadow-soft);
        }
.rank-info {
            flex: 1;
        }
.rank-info h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
.rank-info .meta {
            color: rgba(8, 51, 68, 0.6);
            font-size: 0.9rem;
            margin-bottom: 8px;
        }
.rank-info .desc {
            color: rgba(8, 51, 68, 0.75);
            font-size: 0.95rem;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
.rank-score {
            text-align: right;
            min-width: 100px;
        }
.rank-score .score {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            font-family: var(--font-mono);
        }
.rank-score .label {
            font-size: 0.8rem;
            color: rgba(8, 51, 68, 0.5);
            margin-top: 4px;
        }
.rank-score .trend {
            font-size: 0.85rem;
            margin-top: 6px;
            padding: 2px 10px;
            border-radius: 12px;
            display: inline-block;
            font-weight: 600;
        }
.trend.up {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }
.trend.down {
            background: rgba(239, 68, 68, 0.1);
            color: #ef4444;
        }
.trend.steady {
            background: rgba(100, 116, 139, 0.1);
            color: #64748b;
        }
.rank-note {
            background: var(--card-bg);
            border-radius: 16px;
            box-shadow: var(--shadow-soft);
            padding: 30px;
            margin-top: 40px;
            border-left: 4px solid var(--accent);
        }
.rank-note h4 {
            color: var(--text);
            font-weight: 700;
            margin-bottom: 15px;
        }
.rank-note ul {
            color: rgba(8, 51, 68, 0.75);
            line-height: 1.8;
            padding-left: 20px;
        }
.rank-hero h1 {
                font-size: 2rem;
            }
.rank-card {
                flex-wrap: wrap;
                padding: 18px;
            }
.rank-thumb {
                width: 70px;
                height: 95px;
            }
.rank-score {
                min-width: 80px;
            }
.rank-score .score {
                font-size: 1.4rem;
            }
.rank-number {
                font-size: 1.5rem;
                min-width: 40px;
            }
.rank-tabs .tab-btn {
                padding: 6px 16px;
                font-size: 0.85rem;
                margin-right: 6px;
            }

/* --- 子页面追加 --- */
/* 本页专属样式 */
        .about-hero {
            padding: 5rem 0 3rem;
            position: relative;
        }
.about-hero h1 {
            font-weight: 800;
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            color: var(--text);
            margin-bottom: 1rem;
        }
.about-hero .lead {
            color: var(--text);
            opacity: 0.85;
            max-width: 720px;
            font-size: 1.1rem;
            line-height: 1.8;
        }
.about-section {
            padding: 2.5rem 0;
        }
.about-section h2 {
            font-weight: 700;
            color: var(--text);
            font-size: 1.6rem;
            margin-bottom: 1.2rem;
            position: relative;
            padding-left: 1rem;
            border-left: 4px solid var(--primary);
        }
.about-section p {
            color: var(--text);
            line-height: 1.8;
            opacity: 0.9;
            margin-bottom: 1rem;
        }
.about-card {
            background: var(--gradient-highlight);
            border-radius: 16px;
            padding: 1.5rem;
            height: 100%;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(8, 145, 178, 0.15);
            transition: transform 0.2s ease;
        }
.about-card:hover {
            transform: translateY(-4px);
        }
.about-card .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(8, 145, 178, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            color: var(--primary);
            font-size: 1.3rem;
        }
.about-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.6rem;
        }
.about-card p {
            font-size: 0.92rem;
            margin-bottom: 0;
        }
.timeline-about {
            position: relative;
            padding-left: 2rem;
            margin: 1.5rem 0;
        }
.timeline-about::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: rgba(8, 145, 178, 0.3);
        }
.timeline-about .tl-item {
            position: relative;
            padding: 0.8rem 0 1.2rem 1.5rem;
        }
.timeline-about .tl-item::before {
            content: '';
            position: absolute;
            left: -1.9rem;
            top: 1.2rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px rgba(8, 145, 178, 0.3);
        }
.timeline-about .tl-item .year {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.9rem;
            font-family: var(--font-mono);
            display: block;
            margin-bottom: 0.3rem;
        }
.timeline-about .tl-item p {
            margin-bottom: 0;
            font-size: 0.95rem;
        }
.stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin: 2rem 0;
        }
.stat-item {
            flex: 1;
            min-width: 140px;
            text-align: center;
            background: var(--gradient-highlight);
            border-radius: 12px;
            padding: 1.2rem 0.8rem;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(8, 145, 178, 0.1);
        }
.stat-item .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-mono);
        }
.stat-item .label {
            font-size: 0.85rem;
            color: var(--text);
            opacity: 0.7;
            margin-top: 0.2rem;
        }
.about-cta {
            background: linear-gradient(145deg, rgba(8, 145, 178, 0.08), rgba(14, 165, 233, 0.05));
            border-radius: 16px;
            padding: 2rem;
            margin: 2.5rem 0;
            border: 1px solid rgba(8, 145, 178, 0.2);
            text-align: center;
        }
.about-cta h2 {
            border: none;
            padding: 0;
            margin-bottom: 0.8rem;
        }
.about-cta p {
            margin-bottom: 1.5rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
.btn-custom {
            display: inline-block;
            padding: 0.7rem 1.8rem;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: background 0.2s;
        }
.btn-custom:hover {
            background: var(--accent);
            color: #fff;
        }
.about-meta {
            font-size: 0.9rem;
            color: var(--text);
            opacity: 0.7;
            margin-top: 1.5rem;
            text-align: center;
        }

/* --- 子页面追加 --- */
/* 本页专属微调——免责声明页面需要更清晰的层次 */
        .disclaimer-section {
            padding: 80px 0;
            position: relative;
        }
.disclaimer-section + .disclaimer-section {
            padding-top: 0;
        }
.disclaimer-card {
            background: var(--card-bg);
            border-radius: 20px;
            padding: 45px 50px;
            box-shadow: var(--shadow-soft);
            border: 1px solid rgba(8, 51, 68, 0.08);
            transition: box-shadow .3s ease, transform .3s ease;
            height: 100%;
        }
.disclaimer-card:hover {
            box-shadow: var(--shadow-heavy);
            transform: translateY(-4px);
        }
.disclaimer-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            line-height: 1.4;
        }
.disclaimer-card h3 i {
            color: var(--primary);
            font-size: 1.2rem;
            width: 28px;
            text-align: center;
        }
.disclaimer-card p, .disclaimer-card li {
            color: var(--text);
            font-size: 0.95rem;
            line-height: 1.8;
            opacity: .88;
        }
.disclaimer-card ul {
            padding-left: 18px;
            margin-bottom: 0;
        }
.disclaimer-card li {
            margin-bottom: 8px;
        }
.disclaimer-card li:last-child {
            margin-bottom: 0;
        }
.disclaimer-highlight {
            background: var(--gradient-highlight);
            border-left: 4px solid var(--primary);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin-top: 20px;
            font-size: 0.9rem;
            color: var(--text);
            line-height: 1.7;
        }
.last-updated {
            font-family: var(--font-mono);
            font-size: 0.85rem;
            color: var(--primary);
            display: inline-block;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
.disclaimer-card {
                padding: 30px 25px;
            }
.disclaimer-section {
                padding: 50px 0;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.accordion-item { background:rgba(0,0,0,.03) !important; color:#083344 !important; border-color:rgba(0,0,0,.12) !important; }
.accordion-button { background:rgba(0,0,0,.03) !important; color:#083344 !important; }
.accordion-body { background:transparent !important; color:#083344 !important; }
.accordion-header { background:transparent !important; }