:root {
            --primary: #0891b2;
            --accent: #0ea5e9;
            --bg: #ecfeff;
            --ink: #083344;
            --line: #0891b2;
            --white: #ffffff;
            --gray: #f0f9ff;
            --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
        }

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

        /* 波浪分割 */
        .wave-divider {
            position: relative;
            width: 100%;
            height: 60px;
            background: linear-gradient(45deg, transparent 50%, var(--bg) 50%);
            transform: skewY(-1.5deg);
            margin-top: -30px;
            z-index: 2;
            border-bottom: 2px solid var(--primary);
        }
        .wave-divider-flip {
            transform: skewY(1.5deg);
            background: linear-gradient(45deg, var(--bg) 50%, transparent 50%);
            border-bottom: none;
            border-top: 2px solid var(--primary);
            margin-bottom: -2px;
        }

        /* 导航栏 */
        .navbar {
            background: var(--bg) !important;
            border-bottom: 2px solid var(--primary);
            padding-top: 0.8rem;
            padding-bottom: 0.8rem;
        }
        .navbar-brand {
            font-weight: 900;
            font-size: 1.8rem;
            color: var(--primary) !important;
            letter-spacing: -0.02em;
        }
        .navbar-brand i {
            margin-right: 6px;
        }
        .nav-link {
            font-weight: 600;
            color: var(--ink) !important;
            margin: 0 0.6rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s;
        }
        .nav-link:hover {
            border-bottom-color: var(--primary);
        }
        .navbar-toggler {
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        /* Hero */
        .hero {
            padding: 5rem 0 4rem;
            background: radial-gradient(circle at 30% 30%, rgba(14,165,233,0.1), transparent 60%);
            border-bottom: 2px solid var(--line);
        }
        .hero-title {
            font-size: clamp(3rem, 10vw, 5rem);
            font-weight: 900;
            line-height: 1.1;
            background: linear-gradient(120deg, var(--primary), var(--accent), #7c3aed);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.03em;
        }
        .floating-deco {
            position: absolute;
            animation: float 6s ease-in-out infinite;
            font-size: 2.2rem;
            opacity: 0.2;
            color: var(--primary);
        }
        @keyframes float {
            0% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-18px) rotate(6deg); }
            100% { transform: translateY(0px) rotate(0deg); }
        }

        /* 特色对比表格 */
        .compare-table {
            border: 2px solid var(--ink);
            width: 100%;
            background: var(--white);
        }
        .compare-table th, .compare-table td {
            padding: 1.2rem;
            border-bottom: 2px solid var(--ink);
            text-align: left;
        }
        .compare-table th {
            background: var(--primary);
            color: white;
            font-weight: 800;
            font-size: 1.2rem;
        }
        .compare-table td {
            font-weight: 500;
        }
        .compare-table .highlight {
            background: #e0f2fe;
        }

        /* 编号清单 */
        .numbered-list {
            list-style: none;
            counter-reset: custom-counter;
            padding-left: 0;
        }
        .numbered-list li {
            counter-increment: custom-counter;
            margin-bottom: 2.2rem;
            padding-left: 3.2rem;
            position: relative;
            font-size: 1.15rem;
            border-bottom: 2px dashed var(--primary);
            padding-bottom: 1.2rem;
        }
        .numbered-list li::before {
            content: counter(custom-counter) ".";
            font-family: var(--mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            position: absolute;
            left: 0;
            top: 0;
        }

        /* 按钮光泽 */
        .btn-glow {
            background: var(--primary);
            color: white;
            font-weight: 700;
            border: none;
            padding: 0.8rem 2rem;
            position: relative;
            overflow: hidden;
            transition: transform 0.2s;
            border-radius: 0;
            letter-spacing: 0.5px;
        }
        .btn-glow::after {
            content: '';
            position: absolute;
            top: 0;
            left: -80%;
            width: 50%;
            height: 100%;
            background: linear-gradient(120deg, transparent, rgba(255,255,255,0.4), transparent);
            transform: skewX(-25deg);
            transition: left 0.5s;
        }
        .btn-glow:hover {
            transform: translateY(-2px);
            background: var(--accent);
        }
        .btn-glow:hover::after {
            left: 120%;
        }

        /* FAQ */
        .accordion-item {
            background: transparent;
            border: 2px solid var(--primary) !important;
            margin-bottom: 1rem;
            border-radius: 0 !important;
        }
        .accordion-button {
            background: var(--white);
            font-weight: 700;
            color: var(--ink);
            padding: 1.2rem;
            box-shadow: none;
        }
        .accordion-button:not(.collapsed) {
            background: var(--primary);
            color: white;
        }
        .accordion-button:focus {
            box-shadow: none;
        }

        /* 回到顶部 */
        #toTop {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            background: var(--ink);
            color: var(--bg);
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.4s, visibility 0.4s;
            border: 2px solid var(--primary);
        }
        #toTop.show {
            opacity: 1;
            visibility: visible;
        }

        footer {
            background: var(--ink);
            color: var(--bg);
            border-top: 6px solid var(--primary);
            margin-top: 4rem;
        }
        footer a {
            color: var(--accent);
            font-weight: 500;
            text-decoration: none;
        }
        footer .friend-link {
            border-top: 2px solid var(--primary);
            padding-top: 1.5rem;
        }
        .mono {
            font-family: var(--mono);
            font-size: 1.1rem;
            background: rgba(8,145,178,0.1);
            padding: 0.2rem 0.4rem;
        }
        .bento-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .bento-item {
            border: 2px solid var(--primary);
            padding: 1.8rem;
            background: var(--white);
        }
        .bento-item.wide { grid-column: span 2; }
        .bento-item.tall { grid-row: span 2; }
        @media (max-width: 768px) {
            .bento-grid { grid-template-columns: 1fr; }
            .bento-item.wide { grid-column: span 1; }
        }

        /* 滚动显现 */
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 区块标题 */
        .section-title {
            font-weight: 900;
            font-size: 2.5rem;
            border-left: 10px solid var(--primary);
            padding-left: 1.5rem;
            margin: 2rem 0 2.5rem;
            letter-spacing: -0.02em;
        }
        /* 小留白 */
        .section-pad { padding: 4rem 0; }

/* --- 子页面追加 --- */
/* 排行榜专用样式，仅覆盖与榜单相关的组件，不干扰站点全局 */
        .rank-table {
            width: 100%;
            border-collapse: collapse;
            background: transparent;
        }
.rank-table th, .rank-table td {
            padding: 0.9rem 0.5rem;
            border-bottom: 1px dashed var(--line);
            vertical-align: middle;
            color: var(--ink);
            background: transparent;
        }
.rank-table thead th {
            font-family: var(--mono);
            letter-spacing: 0.5px;
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            font-size: 0.9rem;
            background: rgba(8, 145, 178, 0.05);
        }
.rank-table tbody tr:hover {
            background: rgba(14, 165, 233, 0.06);
            transition: background 0.2s;
        }
.rank-number {
            font-family: var(--mono);
            font-weight: 800;
            color: var(--primary);
            width: 3.5rem;
            font-size: 1.2rem;
        }
.rank-badge {
            background: var(--accent);
            color: var(--white);
            font-size: 0.7rem;
            padding: 0.2rem 0.6rem;
            border-radius: 30px;
            letter-spacing: 0.3px;
            font-weight: 600;
            display: inline-block;
            margin-left: 6px;
        }
.rank-card {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 1.2rem 1.2rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 4px 12px rgba(8, 145, 178, 0.06);
        }
.rank-category-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--ink);
            border-left: 6px solid var(--primary);
            padding-left: 0.9rem;
            margin-bottom: 1.2rem;
            letter-spacing: -0.2px;
        }
.rank-category-title i {
            color: var(--primary);
            margin-right: 0.4rem;
        }
.rank-comment {
            font-size: 0.9rem;
            color: #0e5e75;
            background: rgba(8, 145, 178, 0.05);
            padding: 0.3rem 0.9rem;
            border-radius: 40px;
            display: inline-block;
            border: 1px solid rgba(8,145,178,0.2);
            margin-top: 0.5rem;
        }
/* 覆盖 Bootstrap 可能带来的白底 (但本页避免使用.card，仅用于栅格) */
        .container, .row, [class*="col-"] {
            background: transparent;
        }

/* --- 子页面追加 --- */
.about-hero { position: relative; padding: 80px 0 60px; background: linear-gradient(135deg, var(--bg) 0%, #e0f2fe 50%, var(--bg) 100%); }
.about-hero h1 { font-size: 2.8rem; font-weight: 800; color: var(--ink); margin-bottom: 20px; }
.about-hero h1 span { color: var(--primary); }
.about-hero .lead { font-size: 1.15rem; color: var(--ink); opacity: 0.85; max-width: 780px; margin: 0 auto 30px; }
.about-section { padding: 60px 0; }
.about-section h2 { color: var(--primary); font-weight: 700; margin-bottom: 30px; position: relative; padding-left: 18px; }
.about-section h2::before { content: ''; position: absolute; left: 0; top: 8px; bottom: 8px; width: 4px; background: var(--accent); border-radius: 4px; }
.about-card { background: var(--white); border-radius: 16px; padding: 30px; height: 100%; border: 1px solid rgba(8, 145, 178, 0.15); box-shadow: 0 4px 20px rgba(8, 145, 178, 0.06); transition: transform .3s ease, box-shadow .3s ease; }
.about-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(8, 145, 178, 0.12); }
.about-card i { font-size: 2.2rem; color: var(--primary); margin-bottom: 18px; }
.about-card h5 { color: var(--ink); font-weight: 600; margin-bottom: 12px; }
.about-card p { color: var(--ink); opacity: 0.78; font-size: 0.95rem; line-height: 1.8; margin: 0; }
.timeline-item { position: relative; padding-left: 28px; margin-bottom: 28px; }
.timeline-item::before { content: ''; position: absolute; left: 0; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); border: 2px solid var(--white); box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.2); }
.timeline-item h5 { color: var(--ink); font-weight: 600; margin-bottom: 6px; }
.timeline-item p { color: var(--ink); opacity: 0.75; font-size: 0.95rem; margin: 0; }
.stats-row { background: var(--ink); border-radius: 20px; padding: 40px 30px; color: var(--white); margin: 50px 0; }
.stats-row .stat-item { text-align: center; padding: 10px 0; }
.stats-row .stat-item .num { font-size: 2.4rem; font-weight: 800; color: var(--accent); font-family: var(--mono); }
.stats-row .stat-item .label { font-size: 0.9rem; opacity: 0.7; margin-top: 6px; letter-spacing: 1px; }
.values-list { list-style: none; padding: 0; }
.values-list li { padding: 12px 0; border-bottom: 1px dashed rgba(8, 145, 178, 0.2); color: var(--ink); font-size: 1rem; line-height: 1.7; }
.values-list li:last-child { border-bottom: none; }
.values-list li i { color: var(--primary); margin-right: 12px; width: 22px; text-align: center; }
.values-list li strong { color: var(--ink); }

/* --- 子页面追加 --- */
/* 确保页面背景与文字颜色与首页一致 */
        body {
            background: var(--bg);
            color: var(--ink);
            font-family: 'Inter', sans-serif;
        }
/* 免责声明专属的强调框，沿用站点风格 */
        .legal-note {
            background: var(--gray);
            border-left: 4px solid var(--primary);
            padding: 1.25rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
            color: var(--ink);
        }
.legal-note i {
            color: var(--primary);
            margin-right: 0.5rem;
        }
/* 小标题统一带品牌色点缀 */
        .section-title {
            color: var(--primary);
            font-weight: 700;
            position: relative;
            padding-bottom: 0.5rem;
            margin-top: 2.5rem;
            letter-spacing: -0.02em;
        }
.section-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
/* 列表样式与首页一致 */
        .disclaimer-list {
            list-style: none;
            padding-left: 0;
        }
.disclaimer-list li {
            padding: 0.5rem 0 0.5rem 2rem;
            position: relative;
            border-bottom: 1px dashed var(--line);
        }
.disclaimer-list li::before {
            content: "\f05a";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary);
            opacity: 0.8;
        }
/* 链接样式 */
        a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            transition: opacity .2s;
        }
a:hover {
            opacity: 0.8;
            text-decoration: underline;
        }
/* 高亮当前导航（首页导航里没有免责声明，但为保持一致性我们手动高亮） */
        .navbar .nav-link.active {
            font-weight: 700;
            color: var(--primary) !important;
            border-bottom: 2px solid var(--primary);
        }
/* 覆盖 Bootstrap 卡片/表单等默认白底——本页未使用组件类，但以防万一 */
        .card, .card-body, .form-control, .list-group-item {
            background: var(--gray) !important;
            color: var(--ink) !important;
            border-color: var(--line) !important;
        }
/* 页脚样式与首页保持一致（复用类） */
        footer .container {
            border-top: 1px solid var(--line);
            padding-top: 2rem;
            margin-top: 4rem;
        }

/* --- 子页面追加 --- */
.privacy-section { padding: 80px 0; }
.privacy-card { background: rgba(255,255,255,.08); border: 1px solid rgba(8,145,178,.2); border-radius: 16px; padding: 32px; margin-bottom: 24px; backdrop-filter: blur(8px); transition: all .3s ease; }
.privacy-card:hover { transform: translateY(-4px); border-color: rgba(8,145,178,.5); box-shadow: 0 8px 30px rgba(8,145,178,.1); }
.privacy-icon { font-size: 2.5rem; color: var(--accent); margin-bottom: 16px; }
.privacy-list { list-style: none; padding: 0; }
.privacy-list li { padding: 8px 0 8px 28px; position: relative; color: rgba(8,51,68,.85); }
.privacy-list li::before { content: "\f058"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; color: var(--primary); }
.contact-box { background: linear-gradient(135deg, rgba(8,145,178,.1), rgba(14,165,233,.1)); border: 1px solid rgba(8,145,178,.3); border-radius: 16px; padding: 40px; margin-top: 40px; }
.contact-box h3 { color: var(--primary); font-weight: 700; margin-bottom: 16px; }
.contact-box a { color: var(--accent); text-decoration: none; font-weight: 500; }
.contact-box a:hover { text-decoration: underline; }

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