:root {
            --brand-main: #9f1239;
            --brand-accent: #e11d48;
            --brand-bg: #fafafa;
            --brand-text: #3f0a1a;
        }
        * { box-sizing: border-box; }
        body {
            background-color: var(--brand-bg);
            color: var(--brand-text);
            font-family: 'Inter', sans-serif;
            font-size: 0.95rem;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            background-image: 
                radial-gradient(circle at 10% 15%, rgba(225, 29, 72, 0.04) 0%, transparent 25%),
                radial-gradient(circle at 95% 70%, rgba(159, 18, 57, 0.03) 0%, transparent 30%),
                linear-gradient(135deg, transparent 60%, rgba(159, 18, 57, 0.02) 100%);
        }
        h1, h2, h3, .display-5, .navbar-brand { font-weight: 900; letter-spacing: -0.02em; }
        .brand-font { font-weight: 900; }
        .bg-brand-main { background-color: var(--brand-main); }
        .text-brand-main { color: var(--brand-main); }
        .border-brand { border-color: var(--brand-main) !important; }

        /* 左侧固定侧栏 */
        .sidebar-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            width: 240px;
            border-right: 1px solid rgba(159, 18, 57, 0.2);
            background: rgba(250, 250, 250, 0.95);
            backdrop-filter: blur(4px);
            z-index: 1050;
            padding: 1.8rem 1rem;
            overflow-y: auto;
        }
        .sidebar-wrapper .logo { font-size: 1.3rem; font-weight: 900; color: var(--brand-text); }
        .sidebar-wrapper .nav-item { margin-bottom: 0.25rem; }
        .sidebar-wrapper .nav-link {
            color: var(--brand-text);
            font-weight: 500;
            padding: 0.4rem 0.75rem;
            border-left: 3px solid transparent;
            border-radius: 0 6px 6px 0;
            font-size: 0.9rem;
        }
        .sidebar-wrapper .nav-link:hover, .sidebar-wrapper .nav-link.active {
            background: rgba(159, 18, 57, 0.06);
            border-left-color: var(--brand-accent);
            color: var(--brand-main);
        }
        .main-content {
            margin-left: 240px;
            padding: 0 2rem 3rem 2rem;
        }
        @media (max-width: 991.98px) {
            .sidebar-wrapper {
                position: static !important;
                width: 100% !important;
                height: auto !important;
                border-right: none;
                border-bottom: 1px solid rgba(159,18,57,0.2);
                padding: 1rem 0.5rem;
            }
            .main-content { margin-left: 0 !important; padding: 0 1rem 2rem 1rem; }
            .sidebar-wrapper .d-flex { justify-content: center; }
        }

        /* 几何色块装饰 */
        .geo-bg {
            position: relative;
            overflow: hidden;
        }
        .geo-bg::before, .geo-bg::after {
            content: '';
            position: absolute;
            z-index: -1;
            opacity: 0.08;
            pointer-events: none;
        }
        .geo-bg::before {
            width: 180px; height: 180px; border-radius: 50%;
            background: var(--brand-accent);
            top: 10%; left: 70%;
        }
        .geo-bg::after {
            width: 90px; height: 90px;
            background: var(--brand-main);
            bottom: 5%; left: 5%;
            clip-path: polygon(0 0, 100% 0, 100% 100%);
        }

        /* 瀑布流卡片网格 */
        .masonry-grid {
            column-count: 3;
            column-gap: 1.5rem;
        }
        @media (max-width: 992px) { .masonry-grid { column-count: 2; } }
        @media (max-width: 576px) { .masonry-grid { column-count: 1; } }
        .masonry-card {
            break-inside: avoid;
            margin-bottom: 1.5rem;
            background: white;
            border: 1px solid #e8d9de;
            border-radius: 10px;
            transition: transform 0.15s ease, border-color 0.15s ease;
        }
        .masonry-card:hover {
            transform: scale(1.02);
            border-color: var(--brand-accent);
        }
        .card-content { padding: 1rem; }
        .masonry-card .card-tag {
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
            font-size: 0.75rem;
            background: #f3e6ea;
            display: inline-block;
            padding: 0.2rem 0.6rem;
            border-radius: 4px;
            color: var(--brand-main);
            font-weight: 600;
        }

        /* 对比表格 */
        .table-compare {
            border-collapse: collapse;
            width: 100%;
            border: 1px solid rgba(159,18,57,0.2);
            font-size: 0.9rem;
        }
        .table-compare th, .table-compare td {
            padding: 0.8rem 1rem;
            border: 1px solid rgba(159,18,57,0.15);
            background: white;
        }
        .table-compare th { background: rgba(159,18,57,0.05); font-weight: 700; }
        .mono-data { font-family: 'SFMono-Regular', Consolas, monospace; }

        /* 特色卡片 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }
        .feature-item {
            background: #fff;
            border: 1px solid #e2d4d9;
            border-radius: 10px;
            padding: 1.5rem 1rem;
            transition: border 0.15s ease, transform 0.15s ease;
        }
        .feature-item:hover { border-color: var(--brand-accent); transform: scale(1.02); }
        .feature-icon { font-size: 2rem; color: var(--brand-main); margin-bottom: 0.5rem; }

        /* 步骤条 */
        .steps-container {
            display: flex;
            flex-wrap: wrap;
            gap: 1.8rem;
            margin-top: 1rem;
        }
        .step-item {
            flex: 1 1 180px;
            border-top: 3px solid var(--brand-main);
            padding-top: 1rem;
        }
        .step-number {
            font-family: 'SFMono-Regular', Consolas, monospace;
            font-weight: 700;
            color: var(--brand-accent);
        }

        /* 回到顶部按钮 */
        #backToTop {
            position: fixed;
            bottom: 25px;
            right: 25px;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--brand-main);
            color: white;
            border: 2px solid var(--brand-bg);
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            z-index: 2000;
            opacity: 0.8;
            transition: opacity 0.2s;
            cursor: pointer;
        }
        #backToTop:hover { opacity: 1; }

        /* hero 视差 */
        .hero-parallax {
            background-attachment: fixed;
            background-position: center;
            background-repeat: no-repeat;
            background-size: cover;
            background-image: 
                radial-gradient(circle at 20% 20%, rgba(225,29,72,0.08) 0%, transparent 30%),
                linear-gradient(135deg, #fafafa 0%, #fff 80%);
        }
        .btn-outline-brand {
            border: 2px solid var(--brand-main);
            color: var(--brand-main);
            background: transparent;
            font-weight: 600;
        }
        .btn-outline-brand:hover { background: var(--brand-main); color: white; }

        footer a { color: var(--brand-main); text-decoration: none; }
        footer a:hover { text-decoration: underline; }

        /* 友情链接区 */
        .friend-links { border-top: 1px solid rgba(159,18,57,0.2); }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 组件配色融入深色/玫瑰色调 — 覆盖可能出现的白底 */
        .about-page .card,
        .about-page .card-body,
        .about-page .form-control,
        .about-page .list-group-item {
            background: var(--brand-bg);
            color: var(--brand-text);
            border-color: rgba(159, 18, 57, 0.15);
        }
.about-page .card-title,
        .about-page .card-text {
            color: var(--brand-text);
        }
/* 强调小标题的装饰 */
        .about-page .section-tag {
            display: inline-block;
            background: var(--brand-main);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 0.25rem 0.9rem;
            border-radius: 20px;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }
/* 垂直呼吸感 */
        .about-page .v-space {
            padding: 4rem 0;
        }
.about-page .feature-icon-lg {
            font-size: 2rem;
            color: var(--brand-main);
            background: rgba(225, 29, 72, 0.08);
            width: 70px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 20px;
            margin-bottom: 1.2rem;
        }
/* 时间线样式 (轻量) */
        .timeline-item {
            border-left: 2px solid var(--brand-main);
            padding-left: 1.5rem;
            position: relative;
            margin-bottom: 2rem;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 6px;
            width: 12px;
            height: 12px;
            background: var(--brand-accent);
            border-radius: 50%;
        }
.friend-links a {
            color: var(--brand-main);
            font-weight: 500;
            text-decoration: none;
            border-bottom: 1px dashed var(--brand-main);
            margin-right: 1.2rem;
        }
.friend-links a:hover {
            color: var(--brand-accent);
        }

/* --- 子页面追加 --- */
/* 确保所有卡片/组件背景透明或深色, 与站内风格统一 */
        .card, .card-body, .card-title, .card-text,
        .accordion-item, .accordion-button, .accordion-body,
        .list-group-item, .modal-content, .dropdown-menu {
            background: transparent !important;
            color: var(--brand-text) !important;
            border-color: var(--brand-main) !important;
        }
.form-control, .form-select {
            background: rgba(159, 18, 57, 0.03) !important;
            color: var(--brand-text) !important;
            border-color: var(--brand-main) !important;
        }
.form-control::placeholder {
            color: rgba(63, 10, 26, 0.4) !important;
        }
/* 覆盖 bootstrap 的链接颜色 */
        a {
            color: var(--brand-accent);
        }
/* 自定义小装饰 */
        .disclaimer-hero {
            background: linear-gradient(135deg, rgba(159,18,57,0.03) 0%, rgba(225,29,72,0.06) 100%);
        }

/* --- 子页面追加 --- */
/* 本页专属少量样式，自动合并进站点CSS */
        .privacy-hero {
            padding: 5rem 0 3rem;
            background: linear-gradient(135deg, rgba(159,18,57,0.08) 0%, rgba(225,29,72,0.04) 50%, transparent 100%);
        }
.privacy-section {
            margin-bottom: 2.5rem;
        }
.privacy-card {
            background: var(--brand-bg);
            border: 1px solid rgba(159,18,57,0.15);
            border-radius: 16px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            transition: box-shadow 0.3s ease;
        }
.privacy-card:hover {
            box-shadow: 0 8px 30px rgba(159,18,57,0.08);
        }
.privacy-card h3 {
            color: var(--brand-main);
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
.privacy-card h3 i {
            color: var(--brand-accent);
            font-size: 1.2rem;
        }
.privacy-card p, .privacy-card li {
            color: var(--brand-text);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.privacy-card ul {
            padding-left: 1.25rem;
        }
.privacy-card ul li {
            margin-bottom: 0.5rem;
        }
.privacy-highlight {
            background: rgba(159,18,57,0.06);
            border-left: 4px solid var(--brand-accent);
            padding: 1rem 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 1.5rem 0;
        }
.privacy-highlight p {
            margin: 0;
            font-weight: 500;
        }
.privacy-toc {
            background: rgba(159,18,57,0.04);
            border-radius: 12px;
            padding: 1.5rem 2rem;
            margin-bottom: 2.5rem;
            border: 1px solid rgba(159,18,57,0.1);
        }
.privacy-toc a {
            color: var(--brand-main);
            text-decoration: none;
            font-weight: 500;
        }
.privacy-toc a:hover {
            color: var(--brand-accent);
        }
.privacy-toc ul {
            margin: 0;
            padding-left: 1.25rem;
        }
.privacy-toc li {
            margin-bottom: 0.5rem;
        }
.last-updated {
            font-size: 0.85rem;
            color: rgba(63,10,26,0.6);
            margin-bottom: 1rem;
        }

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