:root {
        --primary: #818cf8;
        --accent: #c084fc;
        --bg: #1e1b4b;
        --text: #e0e7ff;
        --surface: rgba(255,255,255,0.04);
        --border: rgba(129, 140, 248, 0.2);
        --card-hover: rgba(129, 140, 248, 0.08);
    }

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

    body {
        background-color: var(--bg);
        color: var(--text);
        font-family: 'Inter', '思源黑体', sans-serif;
        line-height: 1.7;
        overflow-x: hidden;
    }

    /* 思源宋体标题 */
    h1, h2, h3, .serif-title {
        font-family: 'Source Han Serif SC', 'Noto Serif SC', '思源宋体', Georgia, serif;
        font-weight: 900;
    }

    /* 波浪分隔 */
    .wave-divider {
        position: relative;
        width: 100%;
        height: 80px;
        background: linear-gradient(45deg, transparent 25%, rgba(129,140,248,0.15) 25%, rgba(129,140,248,0.15) 50%, transparent 50%, transparent 75%, rgba(129,140,248,0.15) 75%);
        background-size: 40px 40px;
    }

    /* 吸顶导航 */
    .navbar-custom {
        background: rgba(30, 27, 75, 0.92);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        z-index: 1000;
        transition: all 0.3s ease;
    }
    .navbar-custom .navbar-brand {
        color: var(--text);
        font-weight: 900;
        font-size: 1.6rem;
        letter-spacing: 1px;
    }
    .navbar-custom .nav-link {
        color: var(--text);
        margin: 0 0.8rem;
        font-weight: 500;
        position: relative;
        opacity: 0.85;
        transition: opacity 0.2s;
    }
    .navbar-custom .nav-link:hover {
        opacity: 1;
    }
    .navbar-custom .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--accent);
        transition: width 0.3s;
    }
    .navbar-custom .nav-link:hover::after {
        width: 100%;
    }

    /* Hero 双色块 */
    .hero-section {
        min-height: 92vh;
        display: flex;
        align-items: center;
        position: relative;
        overflow: hidden;
        padding: 120px 0 80px;
    }
    .hero-section::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -20%;
        width: 70%;
        height: 200%;
        background: linear-gradient(135deg, rgba(129,140,248,0.12) 0%, transparent 100%);
        transform: skewX(-8deg);
        z-index: 0;
    }
    .hero-section::after {
        content: '';
        position: absolute;
        bottom: 0;
        right: 0;
        width: 60%;
        height: 100%;
        background: linear-gradient(45deg, transparent 0%, rgba(192,132,252,0.08) 100%);
        z-index: 0;
    }
    .hero-inner {
        position: relative;
        z-index: 1;
    }

    /* 双色块 */
    .hero-block {
        border: 1px solid var(--border);
        border-radius: 24px;
        padding: 3rem;
        background: var(--surface);
        backdrop-filter: blur(4px);
        transition: transform 0.3s, background 0.3s;
    }
    .hero-block:hover {
        background: rgba(129,140,248,0.06);
        transform: translateY(-4px);
    }

    .btn-custom-primary {
        background: var(--primary);
        color: #fff;
        border: 2px solid var(--primary);
        padding: 0.75rem 2rem;
        border-radius: 50px;
        font-weight: 600;
        transition: all 0.3s;
    }
    .btn-custom-primary:hover {
        background: transparent;
        color: var(--primary);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(129,140,248,0.2);
    }
    .btn-custom-outline {
        background: transparent;
        color: var(--accent);
        border: 2px solid var(--accent);
        padding: 0.75rem 2rem;
        border-radius: 50px;
        font-weight: 600;
        transition: all 0.3s;
    }
    .btn-custom-outline:hover {
        background: var(--accent);
        color: #fff;
        transform: translateY(-2px);
    }

    /* 区块通用 */
    .section-padding {
        padding: 100px 0;
    }
    .section-title {
        font-size: 3rem;
        font-weight: 900;
        margin-bottom: 1rem;
        color: var(--text);
    }
    .section-subtitle {
        font-size: 1.1rem;
        opacity: 0.7;
        margin-bottom: 3rem;
        font-weight: 400;
    }

    /* 编号清单 */
    .numbered-list {
        list-style: none;
        counter-reset: num;
        padding-left: 0;
    }
    .numbered-list li {
        counter-increment: num;
        position: relative;
        padding: 1.5rem 0 1.5rem 4rem;
        border-bottom: 1px solid var(--border);
        transition: background 0.2s;
    }
    .numbered-list li:hover {
        background: rgba(129,140,248,0.03);
    }
    .numbered-list li::before {
        content: counter(num, decimal-leading-zero);
        position: absolute;
        left: 0;
        top: 1.5rem;
        font-size: 1.2rem;
        font-weight: 900;
        color: var(--accent);
        border: 1px solid var(--accent);
        width: 2.5rem;
        height: 2.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
    }

    /* 对比表格 */
    .comparison-table {
        width: 100%;
        border-collapse: separate;
        border-spacing: 0;
        margin: 2rem 0;
        border: 1px solid var(--border);
        border-radius: 16px;
        overflow: hidden;
    }
    .comparison-table th,
    .comparison-table td {
        padding: 1.2rem 1.5rem;
        border-bottom: 1px solid var(--border);
        text-align: center;
    }
    .comparison-table thead th {
        background: rgba(129,140,248,0.1);
        font-weight: 700;
        color: var(--primary);
        font-size: 1.1rem;
    }
    .comparison-table tbody tr:last-child td {
        border-bottom: none;
    }
    .comparison-table tbody tr:hover {
        background: rgba(129,140,248,0.04);
    }
    .comparison-table .fa-check {
        color: var(--accent);
    }
    .comparison-table .fa-times {
        color: rgba(224, 231, 255, 0.3);
    }

    /* 特色卡片 */
    .feature-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 16px;
        padding: 2rem;
        transition: all 0.3s ease;
        cursor: pointer;
    }
    .feature-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 12px 32px rgba(0,0,0,0.2);
        background: var(--card-hover);
        border-color: var(--primary);
    }
    .feature-icon {
        font-size: 2.2rem;
        color: var(--accent);
        margin-bottom: 1rem;
    }

    /* FAQ */
    .faq-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 12px;
        margin-bottom: 1rem;
        padding: 1.5rem 2rem;
        transition: border-color 0.3s;
    }
    .faq-item:hover {
        border-color: var(--primary);
    }
    .faq-question {
        font-weight: 700;
        font-size: 1.1rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
    }
    .faq-answer {
        margin-top: 1rem;
        opacity: 0.8;
        font-size: 0.95rem;
        line-height: 1.8;
        display: none;
    }
    .faq-item.open .faq-answer {
        display: block;
    }

    /* 图片懒加载占位 */
    .img-lazy {
        background: linear-gradient(90deg, rgba(129,140,248,0.05) 25%, rgba(192,132,252,0.1) 50%, rgba(129,140,248,0.05) 75%);
        background-size: 200% 100%;
        animation: shimmer 1.5s infinite;
    }
    @keyframes shimmer {
        0% { background-position: 200% 0; }
        100% { background-position: -200% 0; }
    }

    /* 滚动渐显 */
    .fade-up {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible {
        opacity: 1;
        transform: translateY(0);
    }

    /* 页脚 */
    .footer-custom {
        background: rgba(15, 13, 40, 0.9);
        border-top: 1px solid var(--border);
        padding: 3rem 0;
    }
    .footer-links a {
        color: var(--text);
        opacity: 0.7;
        text-decoration: none;
        margin-right: 1.5rem;
        transition: opacity 0.2s;
    }
    .footer-links a:hover {
        opacity: 1;
    }

    /* 友链区 */
    .friend-links {
        border-top: 1px solid var(--border);
        padding: 2rem 0;
        margin-top: 3rem;
        text-align: center;
    }

    /* 响应式 */
    @media (max-width: 768px) {
        .hero-section {
            padding: 100px 0 60px;
        }
        .section-title {
            font-size: 2.2rem;
        }
        .hero-block {
            padding: 1.5rem;
        }
        .navbar-custom .nav-link {
            margin: 0.3rem 0;
        }
    }

/* --- 子页面追加 --- */
/* 本页专属样式：关于页增强 */
        .about-hero {
            background: linear-gradient(135deg, rgba(30,27,75,.9) 0%, rgba(129,140,248,.2) 100%), var(--bg);
            padding: 120px 0 80px;
        }
.about-hero .section-subtitle {
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
.about-section {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 40px;
            margin-bottom: 30px;
            transition: all .3s ease;
        }
.about-section:hover {
            background: var(--card-hover);
            border-color: var(--primary);
            transform: translateY(-4px);
        }
.about-section .section-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
.about-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            line-height: 1.4;
        }
.about-section p, .about-section li {
            color: rgba(224, 231, 255, 0.85);
            line-height: 1.8;
            font-size: 1rem;
        }
.about-section ul {
            padding-left: 20px;
            margin-top: 15px;
        }
.about-section ul li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 5px;
        }
.about-section ul li i {
            color: var(--accent);
            margin-right: 10px;
        }
.about-stats {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
            margin: 40px 0;
        }
.stat-item {
            text-align: center;
            padding: 20px 30px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            min-width: 150px;
            transition: all .3s ease;
        }
.stat-item:hover {
            background: var(--card-hover);
            border-color: var(--primary);
        }
.stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            margin-bottom: 5px;
        }
.stat-label {
            color: rgba(224, 231, 255, 0.7);
            font-size: .9rem;
            font-weight: 500;
        }
.timeline {
            position: relative;
            padding-left: 40px;
            margin-top: 20px;
        }
.timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
        }
.timeline-item {
            position: relative;
            margin-bottom: 35px;
            padding-left: 20px;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--bg);
            box-shadow: 0 0 0 3px var(--border);
        }
.timeline-year {
            font-weight: 700;
            color: var(--accent);
            font-size: 1.1rem;
            display: block;
            margin-bottom: 5px;
        }
.timeline-item p {
            margin: 0;
        }
.about-hero {
                padding: 80px 0 50px;
            }
.about-section {
                padding: 25px;
            }
.about-section h3 {
                font-size: 1.3rem;
            }
.stat-item {
                min-width: 120px;
                padding: 15px 20px;
            }
.stat-number {
                font-size: 2rem;
            }

/* --- 子页面追加 --- */
.terms-section { padding: 2rem 0; }
.terms-title { color: var(--primary); font-weight: 700; margin-bottom: 1.5rem; margin-top: 2.5rem; }
.terms-title:first-of-type { margin-top: 0; }
.terms-text { color: var(--text); line-height: 1.8; margin-bottom: 1rem; opacity: 0.9; }
.terms-list { color: var(--text); line-height: 1.8; opacity: 0.9; padding-left: 1.5rem; }
.terms-list li { margin-bottom: 0.75rem; }
.terms-highlight { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; margin: 1.5rem 0; }
.terms-highlight p { margin-bottom: 0.5rem; }
.terms-date { color: var(--primary); font-size: 0.9rem; margin-bottom: 2rem; }
.nav-link.active { color: var(--primary) !important; font-weight: 600; }
.terms-section { padding: 1.5rem 0; }
.terms-title { font-size: 1.3rem; }

/* --- 子页面追加 --- */
.privacy-section {
            background: var(--bg);
            padding: 4rem 0;
        }
.privacy-container {
            max-width: 900px;
            margin: 0 auto;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 3rem 2.5rem;
        }
.privacy-container h2 {
            color: var(--primary);
            font-size: 1.6rem;
            font-weight: 700;
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border);
        }
.privacy-container h2:first-child {
            margin-top: 0;
        }
.privacy-container p {
            color: var(--text);
            line-height: 1.9;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
.privacy-container ul {
            color: var(--text);
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
.privacy-container ul li {
            margin-bottom: 0.5rem;
            line-height: 1.7;
        }
.privacy-highlight {
            background: rgba(129, 140, 248, 0.08);
            border-left: 4px solid var(--primary);
            padding: 1rem 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 1.5rem 0;
        }
.privacy-highlight p {
            margin-bottom: 0;
        }
.last-updated {
            color: rgba(224, 231, 255, 0.6);
            font-size: 0.9rem;
            font-style: italic;
            margin-bottom: 2rem;
        }
.privacy-hero {
            background: linear-gradient(135deg, rgba(129,140,248,0.15) 0%, rgba(192,132,252,0.1) 100%);
            padding: 3.5rem 0 2.5rem;
            text-align: center;
        }
.privacy-hero h1 {
            color: var(--text);
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
.privacy-hero p {
            color: rgba(224, 231, 255, 0.7);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto;
        }
.privacy-container {
                padding: 2rem 1.25rem;
                margin: 0 15px;
            }
.privacy-container h2 {
                font-size: 1.3rem;
            }
.privacy-hero h1 {
                font-size: 1.7rem;
            }

/* --- 子页面追加 --- */
/* 针对本页小标题加一点个性，不影响整体 */
        .disclaimer-section h2 {
            border-left: 4px solid var(--accent);
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
.disclaimer-section .lead {
            color: var(--text);
            opacity: 0.9;
        }
.muted-custom {
            color: rgba(224, 231, 255, 0.6);
        }
.divider-custom {
            height: 1px;
            background: var(--border);
            margin: 2rem 0;
        }
/* 确保卡片内文字颜色一致 (如果意外用了Bootstrap卡片) */
        .card, .card-body {
            background: var(--surface);
            color: var(--text);
            border-color: var(--border);
        }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .guide-hero { background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%); border-radius: 20px; padding: 60px 40px; margin-top: 30px; text-align: center; }
.guide-hero h1 { color: #fff; font-weight: 800; font-size: 2.5rem; }
.guide-hero p { color: rgba(255,255,255,.9); font-size: 1.1rem; max-width: 700px; margin: 15px auto 0; }
.step-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 30px; height: 100%; transition: all .3s ease; }
.step-card:hover { background: var(--card-hover); transform: translateY(-4px); }
.step-number { font-size: 2.5rem; font-weight: 900; color: var(--primary); line-height: 1; margin-bottom: 15px; }
.tip-box { background: rgba(129, 140, 248, 0.08); border-left: 4px solid var(--primary); border-radius: 0 12px 12px 0; padding: 20px 24px; margin: 25px 0; }
.tip-box i { color: var(--accent); margin-right: 10px; }
.device-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 30px; }
.device-item { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 25px; text-align: center; }
.device-item i { font-size: 2.2rem; color: var(--primary); margin-bottom: 12px; }
.device-item h4 { font-size: 1.1rem; margin-bottom: 8px; }
.device-item p { font-size: .9rem; color: var(--text); opacity: .8; margin-bottom: 0; }
.shortcut-list { list-style: none; padding: 0; }
.shortcut-list li { padding: 8px 0; border-bottom: 1px solid rgba(129,140,248,.1); display: flex; align-items: center; }
.shortcut-list li:last-child { border-bottom: none; }
.shortcut-list i { color: var(--accent); width: 30px; }
.shortcut-list span { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 2px 10px; font-size: .85rem; font-family: monospace; margin-left: auto; }
.guide-hero { padding: 40px 20px; }
.guide-hero h1 { font-size: 1.8rem; }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#e0e7ff !important; border-color:rgba(255,255,255,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#e0e7ff !important; }