:root {
            --main: #db2777;
            --accent: #f43f5e;
            --bg: #fff1f5;
            --text: #500724;
            --border: rgba(219, 39, 119, 0.1);
            --card-bg: #ffffff;
            --shadow: 0 8px 20px rgba(219, 39, 119, 0.05);
            --radius: 8px;
        }
        * { font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; }
        body { background: var(--bg); color: var(--text); overflow-x: hidden; }
        .text-main { color: var(--main); }
        .text-accent { color: var(--accent); }
        .bg-soft { background: var(--bg); }

        /* 滚动进度条 */
        #scrollProgress {
            position: fixed; top: 0; left: 0; height: 4px; width: 0%;
            background: linear-gradient(90deg, var(--main), var(--accent));
            z-index: 9999; transition: width 0.1s;
        }

        /* 导航 */
        .navbar-51 { background: rgba(255, 241, 245, 0.85); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); padding: 0.8rem 0; }
        .navbar-51 .nav-link { color: var(--text); font-weight: 500; margin: 0 0.5rem; transition: color 0.2s; }
        .navbar-51 .nav-link:hover { color: var(--main); }
        .navbar-51 .navbar-brand { font-weight: 800; font-size: 1.6rem; color: var(--main); letter-spacing: -0.5px; }
        .navbar-51 .navbar-brand i { margin-right: 4px; color: var(--accent); }

        /* 布局 - 极简长卷 */
        .section-padding { padding: 5rem 0; }
        .container-narrow { max-width: 800px; margin: 0 auto; }
        .hero-title { font-size: clamp(3rem, 8vw, 4.5rem); font-weight: 900; line-height: 1.1; color: var(--text); }
        .hero-sub { font-size: 1.2rem; font-weight: 400; color: rgba(80, 7, 36, 0.75); max-width: 640px; }
        .stat-number { font-size: 3.5rem; font-weight: 800; color: var(--main); }
        .stat-label { font-weight: 500; color: rgba(80, 7, 36, 0.6); }

        /* 步骤条 */
        .step-item { display: flex; gap: 1.5rem; padding: 1.5rem 0; border-bottom: 1px solid var(--border); }
        .step-item:last-child { border-bottom: none; }
        .step-num { font-size: 2rem; font-weight: 800; color: var(--main); min-width: 60px; }
        .step-content h5 { font-weight: 700; margin-bottom: 0.5rem; }

        /* 卡片网格 */
        .card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
        .feature-card { background: var(--card-bg); border-radius: var(--radius); padding: 1.8rem 1.5rem; border: 1px solid var(--border); transition: transform 0.2s, box-shadow 0.2s; }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
        .feature-icon { font-size: 2rem; color: var(--main); margin-bottom: 1rem; }

        /* 长文样式 */
        .long-form-text { font-size: 1.1rem; line-height: 1.9; color: rgba(80, 7, 36, 0.85); }
        .long-form-text h3 { color: var(--text); font-weight: 700; margin-top: 2rem; }
        .blockquote-51 { border-left: 4px solid var(--main); padding-left: 1.2rem; color: #6b213a; font-style: italic; margin: 1.5rem 0; }

        /* FAQ */
        .faq-item { border-bottom: 1px solid var(--border); padding: 1.5rem 0; }
        .faq-question { font-weight: 700; font-size: 1.25rem; display: flex; justify-content: space-between; cursor: pointer; }
        .faq-answer { margin-top: 1rem; color: rgba(80, 7, 36, 0.8); }

        /* CTA */
        .cta-box { background: linear-gradient(145deg, #fff, #ffe9f0); border-radius: 12px; padding: 3rem 2rem; border: 1px solid var(--border); }
        .btn-51 { background: var(--main); border: none; padding: 0.75rem 2rem; font-weight: 600; border-radius: 40px; color: white; transition: 0.2s; }
        .btn-51:hover { background: var(--accent); transform: translateY(-2px); }

        /* hover 图片效果 (用色块模拟) */
        .hover-zoom { overflow: hidden; border-radius: var(--radius); }
        .hover-zoom img { transition: transform 0.3s ease; }
        .hover-zoom:hover img { transform: scale(1.03); }
        .hover-overlay { position: relative; }
        .hover-overlay::after { content: attr(data-overlay); position: absolute; inset: 0; background: rgba(219, 39, 119, 0.4); color: white; display: flex; align-items: center; justify-content: center; opacity: 0; transition: 0.3s; font-weight: 600; }
        .hover-overlay:hover::after { opacity: 1; }

        /* 滚动动画 */
        .fade-up { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-up.active { opacity: 1; transform: translateY(0); }

        /* 页脚 */
        footer { border-top: 1px solid var(--border); background: #fff; }
        .footer-link { color: var(--text); opacity: 0.7; text-decoration: none; margin: 0 0.8rem; }
        .footer-link:hover { opacity: 1; color: var(--main); }
        .friend-link-section { background: #fdeff3; padding: 2rem 0; border-bottom: 1px solid var(--border); }
        .friend-title { font-size: 1.2rem; font-weight: 700; color: var(--text); }

        /* 图片占位用色块模拟 */
        .img-placeholder { background: #f3c3d6; height: 180px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 500; }

        @media (max-width: 768px) {
            .hero-title { font-size: 2.8rem; }
            .section-padding { padding: 3rem 0; }
        }

/* --- 子页面追加 --- */
/* 仅补充关于页特有的布局微调，不重复造轮子 */
        .about-hero {
            padding: 3rem 0 1rem 0;
        }
.about-section {
            padding: 2.5rem 0;
        }
.about-meta-line {
            font-size: 0.9rem;
            opacity: 0.75;
            letter-spacing: 0.3px;
        }
.stat-block {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 1.8rem 1.2rem;
            text-align: center;
            transition: transform .2s ease;
        }
.stat-block:hover {
            transform: translateY(-4px);
        }
.text-divider {
            width: 60px;
            height: 3px;
            background: var(--accent);
            margin: 1.2rem 0 1.8rem;
            border-radius: 3px;
        }
.badge-51 {
            background: rgba(219, 39, 119, 0.08);
            color: var(--main);
            font-weight: 600;
            padding: .25rem .9rem;
            border-radius: 30px;
            display: inline-block;
            font-size: .85rem;
            border: 1px solid rgba(219,39,119,.15);
        }
/* 确保 bootstrap 栅格不被组件污染 */
        .card, .card-body { background: var(--card-bg); color: var(--text); border-color: var(--border); }
.list-group-item { background: transparent; color: var(--text); border-color: var(--border); }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .disclaimer-section { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 2.5rem; margin-bottom: 2rem; box-shadow: var(--shadow); }
.disclaimer-section h2 { color: var(--main); font-weight: 700; margin-bottom: 1.5rem; font-size: 1.6rem; }
.disclaimer-section h3 { color: var(--text); font-weight: 600; margin-top: 1.5rem; margin-bottom: 0.8rem; font-size: 1.2rem; }
.disclaimer-section p { color: var(--text); line-height: 1.8; margin-bottom: 1rem; opacity: .9; }
.disclaimer-section ul, .disclaimer-section ol { color: var(--text); line-height: 1.8; margin-bottom: 1rem; padding-left: 1.5rem; opacity: .9; }
.disclaimer-section li { margin-bottom: .4rem; }
.disclaimer-highlight { background: var(--bg); border-left: 4px solid var(--main); padding: 1.2rem 1.5rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 1.5rem 0; }
.disclaimer-highlight p { margin-bottom: 0; }
.notice-badge { display: inline-block; background: var(--main); color: #fff; padding: .2rem .8rem; border-radius: 4px; font-size: .85rem; font-weight: 600; margin-right: .5rem; }
.date-line { color: var(--accent); font-weight: 500; margin-bottom: 2rem; display: block; }
.nav-link.active-page { color: var(--main) !important; font-weight: 600; }
.long-form-text p { margin-bottom: 1.2rem; }

/* --- 子页面追加 --- */
.privacy-hero {
            background: linear-gradient(135deg, rgba(219,39,119,0.08) 0%, rgba(244,63,94,0.04) 100%);
            border-bottom: 1px solid var(--border);
            padding: 60px 0 40px;
        }
.privacy-section {
            padding: 50px 0;
            border-bottom: 1px solid var(--border);
        }
.privacy-section:last-child {
            border-bottom: none;
        }
.privacy-section h2 {
            font-weight: 800;
            color: var(--main);
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
.privacy-section h3 {
            font-weight: 700;
            color: var(--text);
            margin-top: 25px;
            margin-bottom: 12px;
            font-size: 1.2rem;
        }
.privacy-section p, .privacy-section li {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.privacy-section ul, .privacy-section ol {
            padding-left: 20px;
            margin-bottom: 15px;
        }
.privacy-section li {
            margin-bottom: 8px;
        }
.info-box {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin: 20px 0;
            box-shadow: var(--shadow);
        }
.info-box i {
            color: var(--main);
            margin-right: 10px;
        }
.update-date {
            display: inline-block;
            background: rgba(219, 39, 119, 0.1);
            color: var(--main);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
        }
.table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
.data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
.data-table th, .data-table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }
.data-table th {
            background: rgba(219, 39, 119, 0.06);
            color: var(--main);
            font-weight: 700;
        }
.data-table td {
            color: var(--text);
        }
.data-table tr:hover td {
            background: rgba(219, 39, 119, 0.02);
        }
.privacy-hero {
                padding: 40px 0 25px;
            }
.privacy-section h2 {
                font-size: 1.25rem;
            }
.privacy-section h3 {
                font-size: 1.1rem;
            }