:root {
            --main: #2563eb;
            --accent: #06b6d4;
            --bg: #f8fafc;
            --text: #0f172a;
            --card-shadow: 0 10px 20px rgba(0,0,0,0.08), 0 6px 6px rgba(0,0,0,0.05);
            --neumorph: 6px 6px 12px rgba(0,0,0,0.08), -6px -6px 12px rgba(255,255,255,0.7);
            --border-light: 1px solid rgba(37, 99, 235, 0.15);
        }
        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: 'Inter', sans-serif;
            background-image: radial-gradient(circle, rgba(37,99,235,0.03) 1px, transparent 1px);
            background-size: 24px 24px;
            line-height: 1.7;
            overflow-x: hidden;
        }
        /* 导航栏吸顶透明变化 */
        .navbar-mk {
            backdrop-filter: blur(12px);
            background: rgba(248, 250, 252, 0.85) !important;
            transition: background 0.3s ease, box-shadow 0.3s ease;
            border-bottom: var(--border-light);
        }
        .navbar-mk.scrolled {
            background: rgba(255, 255, 255, 0.97) !important;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }
        .navbar-brand {
            font-weight: 800;
            color: var(--main) !important;
            letter-spacing: -0.02em;
            font-size: 1.5rem;
        }
        .navbar-brand i {
            color: var(--accent);
            margin-right: 6px;
        }
        .nav-link-mk {
            font-weight: 500;
            color: var(--text) !important;
            margin: 0 0.5rem;
            transition: color 0.2s;
        }
        .nav-link-mk:hover {
            color: var(--main) !important;
        }
        /* Hero区域 主视觉压暗叠白字 */
        .hero-mk {
            position: relative;
            background: linear-gradient(135deg, #0b1120, #1e293b);
            background-image: url('{随机图片}'), linear-gradient(135deg, #0b1120, #1e293b);
            background-blend-mode: overlay;
            background-size: cover, cover;
            background-position: center;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 3rem 1rem;
            border-bottom: 4px solid var(--accent);
        }
        .hero-overlay {
            background: rgba(2, 6, 23, 0.6);
            width: 100%;
            height: 100%;
            position: absolute;
            top: 0; left: 0;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: white;
            text-shadow: 0 4px 20px rgba(0,0,0,0.4);
        }
        .hero-content h1 {
            font-size: calc(2.8rem + 1.5vw);
            font-weight: 900;
            letter-spacing: -0.02em;
        }
        .hero-content p {
            font-size: 1.3rem;
            max-width: 600px;
            margin: 0 auto;
            font-weight: 300;
        }
        /* 通用卡片拟物感 */
        .bento-card {
            background: #ffffff;
            border-radius: 24px;
            padding: 1.8rem 1.5rem;
            box-shadow: var(--card-shadow);
            border: var(--border-light);
            transition: transform 0.15s, box-shadow 0.2s;
            height: 100%;
            background: linear-gradient(145deg, #ffffff, #f1f5f9);
        }
        .bento-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 18px 30px rgba(0,0,0,0.1);
        }
        .bento-icon {
            font-size: 2.4rem;
            color: var(--main);
            margin-bottom: 1rem;
            text-shadow: 2px 2px 0 rgba(6,182,212,0.2);
        }
        .icon-list-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            margin-bottom: 1.2rem;
        }
        .icon-list-item i {
            font-size: 1.6rem;
            min-width: 2rem;
            color: var(--accent);
        }
        /* 手风琴样式 */
        .accordion-mk .accordion-item {
            border: none;
            background: transparent;
            border-bottom: 1px solid rgba(37,99,235,0.15);
        }
        .accordion-mk .accordion-button {
            background: transparent;
            font-weight: 600;
            color: var(--text);
            padding: 1.5rem 0.5rem;
            font-size: 1.1rem;
        }
        .accordion-mk .accordion-button:not(.collapsed) {
            color: var(--main);
            background: rgba(37,99,235,0.03);
            box-shadow: none;
        }
        .accordion-mk .accordion-body {
            padding: 0.5rem 1rem 1.5rem 1rem;
            color: #334155;
        }
        /* 长文区块 */
        .longform-mk {
            background: white;
            border-radius: 30px;
            padding: 2.5rem;
            box-shadow: var(--card-shadow);
            border: var(--border-light);
            background-image: linear-gradient(rgba(37,99,235,0.02) 1px, transparent 1px);
            background-size: 100% 2rem;
        }
        .longform-mk h3 {
            font-weight: 800;
            color: var(--main);
            margin-bottom: 1.2rem;
        }
        .longform-mk p {
            font-size: 1.05rem;
            color: #1e293b;
        }
        .mono {
            font-family: 'JetBrains Mono', 'SF Mono', 'Menlo', monospace;
            background: rgba(37,99,235,0.08);
            padding: 0.1rem 0.4rem;
            border-radius: 6px;
            color: #0f172a;
        }
        /* FAQ 样式 */
        .faq-item {
            background: white;
            border-radius: 18px;
            padding: 1.5rem 1.8rem;
            margin-bottom: 1rem;
            box-shadow: 0 4px 8px rgba(0,0,0,0.02);
            border: 1px solid rgba(37,99,235,0.1);
        }
        .faq-item h4 {
            font-weight: 700;
            color: var(--main);
            margin-bottom: 0.5rem;
        }
        /* 图片hover放大 + 渐显遮罩 */
        .img-hover-zoom {
            overflow: hidden;
            border-radius: 16px;
            position: relative;
            background: #e2e8f0;
        }
        .img-hover-zoom img {
            transition: transform 0.5s ease, opacity 0.3s;
            width: 100%;
            display: block;
            opacity: 0;
            animation: fadeIn 0.6s forwards;
        }
        @keyframes fadeIn {
            to { opacity: 1; }
        }
        .img-hover-zoom .overlay-text {
            position: absolute;
            bottom: 0;
            left: 0; right: 0;
            background: linear-gradient(to top, rgba(15,23,42,0.85), transparent);
            color: white;
            padding: 1.5rem 1rem 0.8rem 1rem;
            opacity: 0;
            transition: opacity 0.3s;
            font-weight: 600;
        }
        .img-hover-zoom:hover .overlay-text {
            opacity: 1;
        }
        .img-hover-zoom:hover img {
            transform: scale(1.06);
        }
        /* 通用区块间距 */
        .section-mk {
            padding: 4rem 0;
        }
        .section-title-mk {
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 2rem;
            position: relative;
            display: inline-block;
        }
        .section-title-mk::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 70%;
            height: 4px;
            background: linear-gradient(90deg, var(--main), var(--accent));
            border-radius: 2px;
        }
        .footer-mk {
            background: #0f172a;
            color: #cbd5e1;
            padding: 2.5rem 0 1rem;
            margin-top: 4rem;
        }
        .footer-mk a {
            color: #94a3b8;
            text-decoration: none;
        }
        .footer-mk a:hover {
            color: white;
        }
        .friend-links {
            background: #eef2f6;
            border-radius: 40px;
            padding: 1.8rem;
            margin: 3rem 0 1rem;
        }
        /* Bento 网格自定义 */
        .bento-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .grid-item {
            background: white;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
            padding: 1.8rem;
        }
        .grid-item.tall {
            grid-row: span 2;
        }
        .grid-item.wide {
            grid-column: span 2;
        }
        @media (max-width: 992px) {
            .bento-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .bento-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
        }
        /* 导航折叠 */
        .navbar-toggler-mk {
            border: none;
            background: transparent;
            font-size: 1.8rem;
            color: var(--main);
        }
        .navbar-collapse {
            background: rgba(255,255,255,0.9);
            border-radius: 0 0 16px 16px;
            padding: 0.5rem 1rem;
        }

/* --- 子页面追加 --- */
/* 页面主标题微调 */
        .about-hero-title {
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text);
            position: relative;
            display: inline-block;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid var(--main);
        }
/* 小标题统一带品牌色小点缀 */
        .section-title-mk.about-section-title::before {
            content: "◈ ";
            color: var(--accent);
            font-weight: 600;
        }
/* 长文排版强化可读性 */
        .longform-mk.about-longform p {
            margin-bottom: 1.25rem;
            line-height: 1.85;
            color: rgba(15, 23, 42, 0.9);
        }
.about-fact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
.about-fact-item {
            background: rgba(37, 99, 235, 0.04);
            border: var(--border-light);
            border-radius: 16px;
            padding: 1.2rem 1rem;
            text-align: center;
            box-shadow: var(--card-shadow);
        }
.about-fact-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--main);
            line-height: 1.2;
        }
.about-fact-label {
            font-size: 0.9rem;
            color: var(--text);
            opacity: 0.7;
            margin-top: 0.2rem;
        }
/* 引用块风格 */
        .about-quote {
            border-left: 4px solid var(--accent);
            background: rgba(6, 182, 212, 0.05);
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            margin: 2rem 0;
            color: var(--text);
        }
/* 导航高亮当前页 */
        .nav-link-mk.active-about {
            color: var(--main) !important;
            font-weight: 600;
            border-bottom: 2px solid var(--main);
        }
/* 确保Bootstrap组件不会破坏风格（若有card等覆盖） */
        .card, .card-body { background: transparent; color: inherit; border: none; }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 组件与本站配色一致 —— 本页未使用组件类，仅做兜底 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .form-control, .form-select, .form-label, .input-group-text,
        .table, .list-group-item, .accordion-item, .accordion-button, .accordion-body,
        .modal-content, .modal-header, .modal-body, .dropdown-menu, .dropdown-item,
        .nav-link, .navbar, .navbar-brand, .btn-light, .btn-outline-* {
            background: transparent !important;
            color: var(--text) !important;
            border-color: rgba(37,99,235,.2) !important;
        }
.form-control::placeholder { color: rgba(15,23,42,.5); }
/* 免责声明页特有微调 */
        .disclaimer-hero {
            background: linear-gradient(145deg, rgba(37,99,235,.08) 0%, rgba(6,182,212,.05) 100%);
            border-bottom: var(--border-light);
        }
.disclaimer-section {
            margin-bottom: 2.2rem;
        }
.disclaimer-section h2 {
            font-weight: 700;
            font-size: 1.6rem;
            color: var(--main);
            border-left: 4px solid var(--accent);
            padding-left: 1rem;
            margin-bottom: 1.2rem;
            letter-spacing: -.01em;
        }
.disclaimer-section p, .disclaimer-section li {
            line-height: 1.8;
            color: var(--text);
            opacity: .92;
        }
.disclaimer-section ul {
            padding-left: 1.2rem;
            list-style-type: square;
            color: var(--text);
        }
.disclaimer-section a {
            color: var(--main);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
.disclaimer-section a:hover {
            color: var(--accent);
        }
.highlight-box {
            background: rgba(6,182,212,.08);
            border-left: 4px solid var(--accent);
            padding: 1.2rem 1.5rem;
            border-radius: 0 .5rem .5rem 0;
            margin: 1.8rem 0;
        }
.mono-date {
            font-family: 'Inter', monospace;
            background: rgba(37,99,235,.05);
            padding: .1rem .5rem;
            border-radius: .3rem;
            font-size: .9rem;
        }
/* 确保footer样式与全站一致 */
        .footer-mk {
            margin-top: 4rem;
        }
.active-page {
            color: var(--accent) !important;
            font-weight: 600;
        }

/* --- 子页面追加 --- */
/* 隐私政策页特殊排版微调 */
        .privacy-hero {
            background: linear-gradient(135deg, rgba(37,99,235,0.06) 0%, rgba(6,182,212,0.04) 100%);
            border-bottom: var(--border-light);
        }
.privacy-section {
            background: var(--bg);
            border-radius: 20px;
            padding: 1.8rem 2rem;
            box-shadow: var(--card-shadow);
            margin-bottom: 2rem;
        }
.privacy-section h2 {
            color: var(--main);
            font-weight: 700;
            font-size: 1.5rem;
            border-left: 4px solid var(--accent);
            padding-left: 1rem;
            margin-bottom: 1.4rem;
        }
.privacy-section h3 {
            color: var(--text);
            font-weight: 600;
            font-size: 1.2rem;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
.privacy-section p, .privacy-section li {
            color: var(--text);
            opacity: 0.92;
            line-height: 1.7;
            font-size: 0.98rem;
        }
.privacy-section ul, .privacy-section ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
.privacy-section li {
            margin-bottom: 0.4rem;
        }
.privacy-meta {
            font-family: 'Inter', monospace;
            color: var(--main);
            background: rgba(37,99,235,0.05);
            padding: 0.6rem 1rem;
            border-radius: 40px;
            display: inline-block;
            font-size: 0.9rem;
            margin-bottom: 1.8rem;
            border: var(--border-light);
        }
.highlight-box p {
            margin-bottom: 0.3rem;
        }
.table-custom {
            width: 100%;
            border-collapse: collapse;
            background: transparent;
        }
.table-custom th {
            background: rgba(37,99,235,0.08);
            color: var(--text);
            font-weight: 600;
            padding: 0.75rem 1rem;
            border-bottom: 2px solid var(--main);
            text-align: left;
        }
.table-custom td {
            padding: 0.75rem 1rem;
            border-bottom: 1px solid rgba(37,99,235,0.15);
            color: var(--text);
        }
.table-custom tr:last-child td {
            border-bottom: none;
        }
.privacy-section {
                padding: 1.2rem;
            }

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .terms-section { padding: 80px 0; }
.terms-container { max-width: 860px; margin: 0 auto; }
.terms-intro { background: linear-gradient(135deg, rgba(37,99,235,0.06) 0%, rgba(6,182,212,0.04) 100%); border-radius: 16px; padding: 32px; margin-bottom: 48px; border-left: 4px solid var(--main); }
.terms-intro p { font-size: 1.05rem; line-height: 1.8; color: var(--text); opacity: 0.85; }
.terms-block { margin-bottom: 40px; padding: 32px; background: #ffffff; border-radius: 12px; box-shadow: var(--card-shadow); border: var(--border-light); }
.terms-block h2 { font-size: 1.45rem; font-weight: 700; color: var(--main); margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.terms-block h2 i { font-size: 1.2rem; color: var(--accent); }
.terms-block p, .terms-block li { font-size: 0.98rem; line-height: 1.85; color: var(--text); opacity: 0.88; }
.terms-block ul { padding-left: 20px; margin: 12px 0; }
.terms-block li { margin-bottom: 8px; }
.terms-note { background: rgba(6, 182, 212, 0.08); border: 1px solid rgba(6, 182, 212, 0.2); border-radius: 8px; padding: 16px 20px; margin-top: 20px; font-size: 0.92rem; }
.terms-note i { color: var(--accent); margin-right: 8px; }
.last-updated { text-align: center; color: var(--text); opacity: 0.6; font-size: 0.9rem; margin-top: 40px; }
.terms-block { padding: 24px; }
.terms-intro { padding: 24px; }

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