:root {
        --primary: #22d3ee;
        --accent: #fb923c;
        --bg: #0f172a;
        --text: #e2e8f0;
        --card-bg: #1e293b;
        --border-glow: rgba(34, 211, 238, 0.4);
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        background-color: var(--bg);
        color: var(--text);
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        font-weight: 400;
        line-height: 1.6;
        overflow-x: hidden;
    }

    /* 几何背景色块 */
    .geo-shapes {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        z-index: 0;
        overflow: hidden;
    }
    .geo-shapes .shape {
        position: absolute;
        opacity: 0.08;
    }
    .geo-shapes .circle {
        width: 180px;
        height: 180px;
        border-radius: 50%;
        background: var(--primary);
        top: 20%;
        left: 10%;
    }
    .geo-shapes .square {
        width: 120px;
        height: 120px;
        background: var(--accent);
        top: 65%;
        right: 8%;
        transform: rotate(25deg);
    }
    .geo-shapes .triangle {
        width: 0;
        height: 0;
        border-left: 70px solid transparent;
        border-right: 70px solid transparent;
        border-bottom: 120px solid var(--primary);
        bottom: 15%;
        left: 15%;
    }
    .geo-shapes .circle2 {
        width: 90px;
        height: 90px;
        border-radius: 50%;
        background: var(--accent);
        top: 10%;
        right: 20%;
    }
    .geo-shapes .square2 {
        width: 70px;
        height: 70px;
        background: var(--primary);
        bottom: 30%;
        right: 30%;
        transform: rotate(45deg);
    }

    .main-wrapper {
        position: relative;
        z-index: 1;
    }

    /* 导航栏 */
    .navbar-custom {
        background: rgba(15, 23, 42, 0.8);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(34, 211, 238, 0.15);
        transition: all 0.4s ease;
        padding: 14px 0;
        z-index: 1000;
    }
    .navbar-custom.scrolled {
        background: rgba(15, 23, 42, 0.95);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        padding: 8px 0;
    }
    .navbar-brand {
        font-weight: 900;
        font-size: 1.6rem;
        color: var(--text) !important;
        letter-spacing: 1px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .navbar-brand i {
        color: var(--primary);
        font-size: 1.8rem;
    }
    .nav-link {
        color: var(--text) !important;
        font-weight: 500;
        margin: 0 12px;
        font-size: 0.95rem;
        transition: all 0.3s;
        position: relative;
    }
    .nav-link:hover {
        color: var(--primary) !important;
    }
    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        transition: width 0.3s;
    }
    .nav-link:hover::after {
        width: 100%;
    }
    .navbar-toggler {
        border: 1px solid var(--primary);
        color: var(--primary);
    }
    .navbar-toggler:focus {
        box-shadow: 0 0 0 2px var(--primary);
    }

    /* Hero 区域 */
    .hero-section {
        min-height: 92vh;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        padding: 120px 20px 80px;
        position: relative;
        background: linear-gradient(145deg, #0f172a 0%, #16213e 100%);
        overflow: hidden;
    }
    .hero-section::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -20%;
        width: 80%;
        height: 80%;
        background: radial-gradient(circle, rgba(34, 211, 238, 0.15) 0%, transparent 70%);
        animation: heroGlow 8s ease-in-out infinite alternate;
    }
    @keyframes heroGlow {
        0% { transform: translateY(0) scale(1); }
        100% { transform: translateY(-40px) scale(1.2); }
    }

    .hero-content {
        max-width: 850px;
        position: relative;
        z-index: 2;
    }

    .hero-title {
        font-weight: 900;
        font-size: 4rem;
        line-height: 1.15;
        margin-bottom: 24px;
        text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        letter-spacing: -1px;
    }
    .hero-title .highlight {
        color: var(--primary);
    }
    .hero-title .accent {
        color: var(--accent);
    }

    .hero-subtitle {
        font-size: 1.2rem;
        font-weight: 300;
        color: rgba(226, 232, 240, 0.8);
        max-width: 650px;
        margin: 0 auto 40px;
        line-height: 1.8;
    }

    /* 关键词标签云 */
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
        margin-bottom: 50px;
    }
    .tag-item {
        background: rgba(30, 41, 59, 0.6);
        border: 1px solid rgba(34, 211, 238, 0.2);
        padding: 8px 18px;
        border-radius: 50px;
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--text);
        cursor: default;
        transition: all 0.3s;
        animation: tagFloat 4s ease-in-out infinite;
        backdrop-filter: blur(5px);
    }
    .tag-item:nth-child(odd) {
        animation-delay: 0.5s;
    }
    .tag-item:nth-child(even) {
        animation-delay: 1s;
    }
    .tag-item:hover {
        border-color: var(--primary);
        color: var(--primary);
        transform: translateY(-3px) scale(1.05);
        box-shadow: 0 6px 20px rgba(34, 211, 238, 0.2);
    }
    @keyframes tagFloat {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-8px); }
    }

    .hero-scroll-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background: linear-gradient(135deg, var(--primary) 0%, #0ea5e9 100%);
        color: #0f172a;
        font-weight: 700;
        padding: 14px 32px;
        border-radius: 50px;
        text-decoration: none;
        font-size: 1rem;
        box-shadow: 0 4px 20px rgba(34, 211, 238, 0.3);
        transition: all 0.3s;
    }
    .hero-scroll-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 30px rgba(34, 211, 238, 0.5);
        color: #0f172a;
    }

    /* 通用区块 */
    .section-padding {
        padding: 100px 0;
    }
    .section-title {
        font-weight: 800;
        font-size: 2.4rem;
        margin-bottom: 20px;
        position: relative;
        display: inline-block;
        color: var(--text);
    }
    .section-title::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 0;
        width: 60px;
        height: 3px;
        background: var(--primary);
        border-radius: 2px;
        box-shadow: 0 0 20px var(--border-glow);
    }
    .section-subtitle {
        color: rgba(226, 232, 240, 0.6);
        font-size: 1.1rem;
        font-weight: 300;
        margin-bottom: 60px;
        max-width: 700px;
    }

    /* 数据统计 */
    .stats-section {
        background: linear-gradient(180deg, var(--bg) 0%, #131c30 100%);
        border-top: 1px solid rgba(34, 211, 238, 0.1);
        border-bottom: 1px solid rgba(34, 211, 238, 0.1);
    }
    .stat-item {
        text-align: center;
        padding: 40px 20px;
        position: relative;
    }
    .stat-number {
        font-family: 'Courier New', monospace;
        font-weight: 700;
        font-size: 3rem;
        color: var(--primary);
        display: block;
        line-height: 1.2;
        text-shadow: 0 0 30px rgba(34, 211, 238, 0.3);
    }
    .stat-label {
        color: rgba(226, 232, 240, 0.7);
        font-size: 1rem;
        margin-top: 8px;
        display: block;
    }
    .stat-icon {
        font-size: 2rem;
        margin-bottom: 15px;
        color: var(--accent);
    }

    /* 使用说明 - 手风琴 */
    .howto-section {
        background: var(--bg);
    }
    .accordion-custom {
        max-width: 800px;
        margin: 0 auto;
    }
    .accordion-item-custom {
        background: rgba(30, 41, 59, 0.5);
        border: 1px solid rgba(34, 211, 238, 0.15);
        border-radius: 12px;
        margin-bottom: 15px;
        overflow: hidden;
        transition: all 0.3s;
    }
    .accordion-item-custom:hover {
        border-color: rgba(34, 211, 238, 0.4);
        box-shadow: 0 4px 20px rgba(34, 211, 238, 0.1);
    }
    .accordion-header-custom {
        padding: 20px 24px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-weight: 600;
        font-size: 1.05rem;
        color: var(--text);
        transition: all 0.3s;
    }
    .accordion-header-custom:hover {
        color: var(--primary);
    }
    .accordion-header-custom i {
        color: var(--accent);
        margin-right: 14px;
        font-size: 1.2rem;
    }
    .accordion-body-custom {
        padding: 0 24px 20px;
        color: rgba(226, 232, 240, 0.8);
        font-size: 0.95rem;
        line-height: 1.8;
        display: none;
        animation: fadeIn 0.3s ease;
    }
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(-5px); }
        to { opacity: 1; transform: translateY(0); }
    }
    .accordion-arrow {
        transition: transform 0.3s;
        color: var(--primary);
    }
    .accordion-item-custom.active .accordion-arrow {
        transform: rotate(180deg);
    }

    /* 特色区块 - 图标列表 */
    .feature-card {
        background: rgba(30, 41, 59, 0.4);
        border: 1px solid rgba(34, 211, 238, 0.1);
        border-radius: 16px;
        padding: 30px 24px;
        text-align: center;
        transition: all 0.3s ease;
        height: 100%;
        backdrop-filter: blur(10px);
    }
    .feature-card:hover {
        transform: scale(1.03);
        border-color: var(--primary);
        box-shadow: 0 10px 40px rgba(34, 211, 238, 0.15);
        background: rgba(30, 41, 59, 0.6);
    }
    .feature-icon {
        font-size: 2.5rem;
        margin-bottom: 20px;
        display: inline-block;
        width: 80px;
        height: 80px;
        line-height: 80px;
        border-radius: 50%;
        background: linear-gradient(135deg, rgba(34, 211, 238, 0.15) 0%, rgba(251, 146, 60, 0.15) 100%);
        border: 1px solid rgba(34, 211, 238, 0.3);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }
    .feature-icon i {
        color: var(--primary);
    }
    .feature-card h4 {
        font-weight: 700;
        font-size: 1.15rem;
        margin-bottom: 12px;
    }
    .feature-card p {
        color: rgba(226, 232, 240, 0.7);
        font-size: 0.9rem;
        line-height: 1.7;
    }

    /* FAQ */
    .faq-section {
        background: linear-gradient(180deg, var(--bg) 0%, #131c30 100%);
    }
    .faq-item {
        background: rgba(30, 41, 59, 0.4);
        border: 1px solid rgba(34, 211, 238, 0.1);
        border-radius: 12px;
        margin-bottom: 16px;
        padding: 24px 28px;
        transition: all 0.3s;
    }
    .faq-item:hover {
        border-color: rgba(34, 211, 238, 0.3);
        box-shadow: 0 4px 15px rgba(34, 211, 238, 0.08);
    }
    .faq-question {
        font-weight: 700;
        font-size: 1.05rem;
        margin-bottom: 10px;
        color: var(--primary);
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .faq-question i {
        color: var(--accent);
    }
    .faq-answer {
        color: rgba(226, 232, 240, 0.75);
        font-size: 0.95rem;
        line-height: 1.8;
        padding-left: 30px;
    }

    /* CTA 区域 */
    .cta-section {
        padding: 100px 0;
        text-align: center;
        background: linear-gradient(135deg, rgba(34, 211, 238, 0.1) 0%, rgba(251, 146, 60, 0.1) 100%);
    }
    .cta-title {
        font-weight: 900;
        font-size: 2.5rem;
        margin-bottom: 20px;
    }
    .cta-subtitle {
        color: rgba(226, 232, 240, 0.7);
        max-width: 600px;
        margin: 0 auto 40px;
        font-size: 1.1rem;
    }
    .cta-btn {
        background: linear-gradient(135deg, var(--accent) 0%, #f97316 100%);
        color: #0f172a;
        font-weight: 700;
        padding: 16px 45px;
        border-radius: 50px;
        font-size: 1.1rem;
        text-decoration: none;
        display: inline-block;
        box-shadow: 0 6px 25px rgba(251, 146, 60, 0.4);
        transition: all 0.3s;
    }
    .cta-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 35px rgba(251, 146, 60, 0.5);
        color: #0f172a;
    }

    /* 友情链接 */
    .friend-links {
        background: #131c30;
        padding: 50px 0;
        border-top: 1px solid rgba(34, 211, 238, 0.1);
    }
    .friend-links h3 {
        font-size: 1.2rem;
        font-weight: 700;
        color: rgba(226, 232, 240, 0.6);
        margin-bottom: 20px;
    }

    /* 页脚 */
    .footer {
        background: var(--bg);
        padding: 40px 0;
        border-top: 1px solid rgba(34, 211, 238, 0.1);
        text-align: center;
    }
    .footer .brand {
        font-weight: 900;
        font-size: 1.4rem;
        color: var(--text);
    }
    .footer .copyright {
        color: rgba(226, 232, 240, 0.5);
        margin-top: 12px;
        font-size: 0.9rem;
    }

    /* 响应式 */
    @media (max-width: 768px) {
        .hero-title {
            font-size: 2.5rem;
        }
        .hero-subtitle {
            font-size: 1rem;
        }
        .section-title {
            font-size: 1.8rem;
        }
        .stat-number {
            font-size: 2.2rem;
        }
        .section-padding {
            padding: 70px 0;
        }
        .navbar-collapse {
            background: rgba(15, 23, 42, 0.98);
            padding: 20px;
            border-radius: 12px;
            margin-top: 10px;
        }
        .nav-link {
            padding: 10px 0;
        }
    }

    /* 滚动条 */
    ::-webkit-scrollbar {
        width: 10px;
    }
    ::-webkit-scrollbar-track {
        background: var(--bg);
    }
    ::-webkit-scrollbar-thumb {
        background: var(--primary);
        border-radius: 5px;
    }

/* --- 子页面追加 --- */
/* 本页专属样式——仅补充关于我们页面特有的布局,配色全部继承站点CSS变量 */
        .about-hero {
            position: relative;
            padding: 140px 0 80px;
            background: radial-gradient(ellipse at 30% 20%, rgba(34, 211, 238, 0.12) 0%, transparent 60%);
        }
.about-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }
.about-hero .hero-subtitle {
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.15rem;
            line-height: 1.8;
        }
.about-mission-card {
            background: var(--card-bg);
            border: 1px solid rgba(34, 211, 238, 0.15);
            border-radius: 16px;
            padding: 40px 32px;
            height: 100%;
            transition: all 0.3s ease;
        }
.about-mission-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }
.about-mission-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 24px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(251, 146, 60, 0.15));
        }
.about-mission-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text);
        }
.about-mission-card p {
            color: rgba(226, 232, 240, 0.75);
            line-height: 1.7;
            font-size: 0.95rem;
        }
.about-timeline {
            position: relative;
            padding: 40px 0;
        }
.about-timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, transparent, var(--primary), var(--accent), transparent);
            transform: translateX(-50%);
        }
.timeline-item {
            position: relative;
            margin-bottom: 48px;
        }
.timeline-item .year-badge {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #0f172a;
            font-weight: 800;
            font-size: 0.9rem;
            padding: 8px 20px;
            border-radius: 30px;
            z-index: 2;
            box-shadow: 0 0 20px var(--border-glow);
        }
.timeline-item .timeline-content {
            width: calc(50% - 48px);
            background: var(--card-bg);
            border: 1px solid rgba(34, 211, 238, 0.15);
            border-radius: 14px;
            padding: 28px;
            margin-top: 60px;
        }
.timeline-item:nth-child(odd) .timeline-content {
            margin-left: auto;
        }
.timeline-item .timeline-content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }
.timeline-item .timeline-content p {
            color: rgba(226, 232, 240, 0.7);
            font-size: 0.9rem;
            line-height: 1.7;
        }
.about-values .value-chip {
            display: inline-block;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.2);
            color: var(--primary);
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 10px 16px 0;
        }
.about-statement {
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(251, 146, 60, 0.08));
            border: 1px solid rgba(34, 211, 238, 0.2);
            border-radius: 20px;
            padding: 48px 40px;
            margin: 60px 0;
        }
.about-statement p {
            font-size: 1.2rem;
            line-height: 2;
            color: var(--text);
            font-weight: 400;
            letter-spacing: 0.02em;
        }
.about-statement p strong {
            color: var(--primary);
            font-weight: 800;
        }
.about-hero h1 {
                font-size: 2.2rem;
            }
.about-timeline::before {
                left: 20px;
            }
.timeline-item .year-badge {
                left: 20px;
                transform: none;
            }
.timeline-item .timeline-content {
                width: calc(100% - 56px);
                margin-left: 56px !important;
                margin-top: 56px;
            }
.about-statement {
                padding: 32px 24px;
            }
.about-statement p {
                font-size: 1rem;
            }

/* --- 子页面追加 --- */
/* 极少量页面专属微调，仅覆盖间距/文字，不破坏全局变量 */
        .disclaimer-hero {
            position: relative;
            overflow: hidden;
        }
.disclaimer-hero .hero-content {
            position: relative;
            z-index: 2;
        }
.legal-card {
            background: rgba(30, 41, 59, 0.65);
            backdrop-filter: blur(6px);
            border: 1px solid var(--border-glow);
            border-radius: 18px;
            padding: 2rem 1.8rem;
            transition: border-color .3s ease, box-shadow .3s ease;
            height: 100%;
        }
.legal-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 25px -8px rgba(34, 211, 238, 0.3);
        }
.legal-card i {
            color: var(--accent);
            font-size: 2.2rem;
            margin-bottom: 1rem;
        }
.legal-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            letter-spacing: .3px;
            color: var(--primary);
            margin-bottom: 1rem;
            border-left: 4px solid var(--accent);
            padding-left: 0.8rem;
        }
.legal-card p, .legal-card li {
            color: var(--text);
            font-size: 0.95rem;
            line-height: 1.7;
            opacity: 0.9;
        }
.legal-card ul {
            padding-left: 1.2rem;
            list-style: none;
        }
.legal-card ul li {
            margin-bottom: 0.5rem;
            position: relative;
        }
.legal-card ul li::before {
            content: "▹";
            position: absolute;
            left: -1.2rem;
            color: var(--accent);
            font-weight: 700;
        }
.notice-box {
            background: rgba(251, 146, 60, 0.08);
            border-left: 5px solid var(--accent);
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            font-size: 0.95rem;
        }
.footer-links a {
            color: var(--text);
            text-decoration: none;
            margin-right: 1.5rem;
            font-size: 0.9rem;
            opacity: 0.8;
            transition: opacity .2s;
        }
.footer-links a:hover {
            opacity: 1;
            color: var(--primary);
        }
/* 覆盖bootstrap可能的白色卡片（我们不用.card，但保险） */
        .card, .card-body { background: transparent !important; color: var(--text) !important; }

/* --- 子页面追加 --- */
/* 隐私政策页专属样式——仅补充站点CSS未覆盖的部分 */
        .privacy-hero { padding: 120px 0 60px; position: relative; overflow: hidden; }
.privacy-hero .hero-title { font-size: 3.2rem; font-weight: 900; margin-bottom: 16px; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.privacy-hero .hero-subtitle { font-size: 1.2rem; color: var(--text); opacity: .8; max-width: 700px; margin: 0 auto; }
.privacy-section { padding: 70px 0; border-bottom: 1px solid rgba(34, 211, 238, 0.08); }
.privacy-section:last-child { border-bottom: none; }
.privacy-card { background: var(--card-bg); border: 1px solid rgba(34, 211, 238, 0.15); border-radius: 16px; padding: 32px; margin-bottom: 24px; transition: all .3s ease; }
.privacy-card:hover { border-color: var(--border-glow); box-shadow: 0 0 30px rgba(34, 211, 238, 0.08); transform: translateY(-4px); }
.privacy-card h3 { color: var(--primary); font-size: 1.4rem; font-weight: 700; margin-bottom: 16px; display: flex; align-items: center; gap: 12px; }
.privacy-card h3 i { color: var(--accent); font-size: 1.2rem; }
.privacy-card p { color: var(--text); opacity: .85; line-height: 1.9; margin-bottom: 12px; }
.privacy-card ul { color: var(--text); opacity: .85; line-height: 1.9; padding-left: 20px; }
.privacy-card ul li { margin-bottom: 8px; }
.privacy-card ul li::marker { color: var(--primary); }
.privacy-highlight { background: rgba(34, 211, 238, 0.06); border-left: 4px solid var(--primary); padding: 16px 20px; border-radius: 0 12px 12px 0; margin: 16px 0; }
.privacy-highlight p { margin: 0; color: var(--text); opacity: .9; }
.privacy-badge { display: inline-block; background: rgba(34, 211, 238, 0.1); color: var(--primary); border: 1px solid var(--border-glow); padding: 4px 14px; border-radius: 20px; font-size: .85rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 0.5px; }
.last-updated { color: var(--text); opacity: .6; font-size: .9rem; text-align: center; margin-top: 20px; }
.privacy-contact { display: flex; align-items: center; gap: 12px; background: var(--card-bg); border: 1px solid rgba(251, 146, 60, 0.2); border-radius: 12px; padding: 20px 24px; margin-top: 16px; }
.privacy-contact i { color: var(--accent); font-size: 1.4rem; }
.privacy-contact p { margin: 0; color: var(--text); opacity: .9; }
.privacy-contact a { color: var(--primary); text-decoration: none; }
.privacy-contact a:hover { text-decoration: underline; }
.privacy-hero { padding: 90px 0 40px; }
.privacy-hero .hero-title { font-size: 2.2rem; }
.privacy-card { padding: 24px; }