:root {
            --ms-primary: #64748b;
            --ms-accent: #94a3b8;
            --ms-bg: #f1f5f9;
            --ms-text: #1e293b;
            --ms-muted: #5b6b7f;
            --ms-border: #cbd5e1;
            --ms-font-sans: 'Inter', system-ui, -apple-system, sans-serif;
            --ms-font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
        }
        body {
            background-color: var(--ms-bg);
            color: var(--ms-text);
            font-family: var(--ms-font-sans);
            font-weight: 400;
            font-size: 0.9rem;
            line-height: 1.5;
            letter-spacing: 0.01em;
        }
        /* 细微噪点纹理 overlay */
        body::before {
            content: "";
            position: fixed;
            top: 0; left: 0; width: 100%; height: 100%;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='1' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 9999;
            opacity: 0.2;
        }
        /* 极简描边，无阴影 */
        .no-shadow, .card, .border-block {
            box-shadow: none !important;
            border: 1px solid var(--ms-border);
        }
        .border-block {
            border: 1px solid var(--ms-border);
        }
        /* 导航 */
        .navbar {
            border-bottom: 1px solid var(--ms-border);
            background-color: rgba(241,245,249,0.9);
            backdrop-filter: blur(2px);
            padding-top: 0.3rem;
            padding-bottom: 0.3rem;
        }
        .navbar-brand {
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--ms-text) !important;
            font-size: 1.25rem;
        }
        .navbar-nav .nav-link {
            color: var(--ms-muted) !important;
            font-weight: 500;
            margin-inline: 0.5rem;
            font-size: 0.9rem;
            border-bottom: 2px solid transparent;
        }
        .navbar-nav .nav-link:hover {
            border-bottom-color: var(--ms-primary);
            color: var(--ms-text) !important;
        }
        /* hero 打字机动画 */
        .hero-typing {
            display: inline-block;
            overflow: hidden;
            white-space: nowrap;
            border-right: 2px solid var(--ms-primary);
            font-weight: 900;
            letter-spacing: -0.02em;
            animation: typing 3.5s steps(22, end), blink-caret .7s step-end infinite;
            font-size: clamp(2.2rem, 6vw, 4rem);
            color: var(--ms-text);
        }
        @keyframes typing {
            from { width: 0 }
            to { width: 100% }
        }
        @keyframes blink-caret {
            from, to { border-color: transparent }
            50% { border-color: var(--ms-primary); }
        }
        /* hero 背景视差 */
        .hero-parallax {
            background-image: url("{随机图片}");
            background-attachment: fixed;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            min-height: 78vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--ms-bg);
            border-bottom: 1px solid var(--ms-border);
        }
        .hero-parallax::after {
            content: '';
            position: absolute;
            inset: 0;
            background-color: rgba(241,245,249,0.72);
            backdrop-filter: grayscale(0.2);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 2rem;
        }
        .hero-sub {
            font-family: var(--ms-font-mono);
            color: var(--ms-primary);
            font-size: 0.85rem;
            letter-spacing: 0.1em;
            border: 1px solid var(--ms-border);
            display: inline-block;
            padding: 0.3rem 1rem;
            background: var(--ms-bg);
        }
        /* 卡片网格 */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        @media (max-width: 992px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 576px) {
            .card-grid { grid-template-columns: 1fr; }
        }
        .card-item {
            background: var(--ms-bg);
            border: 1px solid var(--ms-border);
            padding: 1.5rem;
            transition: transform 0.2s ease, border-color 0.2s ease;
            border-radius: 0;   /* 直角极简 */
            opacity: 0;
            transform: translateY(18px);
            transition: opacity .5s cubic-bezier(0.2,0.7,0.2,1), transform .5s cubic-bezier(0.2,0.7,0.2,1), border-color .2s;
        }
        .card-item.reveal {
            opacity: 1;
            transform: translateY(0);
        }
        .card-item:hover {
            transform: translateY(-6px);
            border-color: var(--ms-primary);
            box-shadow: 0 10px 30px -10px rgba(100,116,139,0.3) !important;
        }
        /* 延迟工具类 */
        .delay-1 { transition-delay: .08s; }
        .delay-2 { transition-delay: .16s; }
        .delay-3 { transition-delay: .24s; }
        .delay-4 { transition-delay: .32s; }
        .delay-5 { transition-delay: .40s; }
        .delay-6 { transition-delay: .48s; }

        /* 编号清单 */
        .numbered-list {
            list-style: none;
            counter-reset: num-counter;
            padding-left: 0;
        }
        .numbered-list li {
            counter-increment: num-counter;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: baseline;
            font-size: 0.9rem;
        }
        .numbered-list li::before {
            content: counter(num-counter, decimal-leading-zero);
            font-family: var(--ms-font-mono);
            color: var(--ms-primary);
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 1.2rem;
            width: 2.2rem;
            flex-shrink: 0;
            border-bottom: 1px dashed var(--ms-border);
        }
        /* 对比表格 */
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .compare-table th, .compare-table td {
            border: 1px solid var(--ms-border);
            padding: 0.8rem 0.6rem;
            background: var(--ms-bg);
            vertical-align: top;
        }
        .compare-table th {
            font-weight: 700;
            color: var(--ms-primary);
            font-size: 0.85rem;
            letter-spacing: 0.03em;
        }
        .compare-table .label-col {
            font-family: var(--ms-font-mono);
            font-size: 0.8rem;
            color: var(--ms-muted);
            width: 22%;
        }
        /* FAQ 折叠 */
        .faq-block {
            border: 1px solid var(--ms-border);
            margin-bottom: 0.5rem;
        }
        .faq-question {
            background: transparent;
            padding: 0.8rem 1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border: none;
            width: 100%;
            text-align: left;
            background: var(--ms-bg);
        }
        .faq-question:after {
            content: "+";
            font-family: var(--ms-font-mono);
            font-size: 1.4rem;
            color: var(--ms-primary);
        }
        .faq-answer {
            display: none;
            padding: 0.2rem 1rem 1rem 1rem;
            border-top: 1px dashed var(--ms-border);
            font-size: 0.88rem;
            color: var(--ms-muted);
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question:after {
            content: "–";
        }
        /* CTA */
        .cta-band {
            border-top: 1px solid var(--ms-border);
            border-bottom: 1px solid var(--ms-border);
            padding: 2.5rem 0;
            text-align: center;
            background: var(--ms-bg);
        }
        .btn-outline-primary {
            border-radius: 0;
            border: 1px solid var(--ms-primary);
            color: var(--ms-primary);
            font-weight: 600;
            padding: 0.4rem 1.8rem;
        }
        .btn-outline-primary:hover {
            background: var(--ms-primary);
            color: #fff;
        }
        /* footer */
        footer {
            border-top: 1px solid var(--ms-border);
            font-size: 0.8rem;
            color: var(--ms-muted);
        }
        .footer-links a {
            color: var(--ms-text);
            text-decoration: none;
            border-bottom: 1px dotted var(--ms-primary);
            margin-inline: 0.4rem;
        }
        /* 友链区 */
        .friend-links {
            border: 1px solid var(--ms-border);
            padding: 0.8rem 1rem;
            background: transparent;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .friend-links a {
            color: var(--ms-muted);
            text-decoration: none;
            border: 1px solid var(--ms-border);
            padding: 0.1rem 0.6rem;
            font-size: 0.8rem;
        }
        h2.section-title {
            font-weight: 800;
            letter-spacing: -0.02em;
            font-size: 1.8rem;
            border-bottom: 1px solid var(--ms-primary);
            display: inline-block;
            padding-bottom: 0.2rem;
        }
        .mono {
            font-family: var(--ms-font-mono);
        }
        .text-accent { color: var(--ms-primary); }
        .border-block { border: 1px solid var(--ms-border); }

/* --- 子页面追加 --- */
/* 关于我们页面专属小样式 */
        .about-hero { padding: 6rem 0 3rem; }
.about-section { padding: 3rem 0; border-bottom: 1px solid var(--ms-border); }
.about-section:last-of-type { border-bottom: none; }
.section-tag { font-family: var(--ms-font-mono); font-size: 0.85rem; color: var(--ms-accent); letter-spacing: 0.1em; text-transform: uppercase; }
.about-lead { font-size: 1.1rem; line-height: 1.8; color: var(--ms-text); }
.about-text { color: var(--ms-muted); line-height: 1.8; }
.feature-badge { background: var(--ms-primary); color: #fff; padding: 0.3rem 0.8rem; border-radius: 4px; font-size: 0.8rem; font-weight: 600; }
.stat-number { font-family: var(--ms-font-mono); font-size: 2.2rem; color: var(--ms-primary); font-weight: 700; }
.stat-label { color: var(--ms-muted); font-size: 0.9rem; }
.timeline-item { border-left: 2px solid var(--ms-border); padding-left: 1.5rem; margin-bottom: 2rem; position: relative; }
.timeline-item::before { content: ''; position: absolute; left: -7px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--ms-accent); }
.timeline-year { font-family: var(--ms-font-mono); color: var(--ms-accent); font-size: 0.9rem; }
.timeline-title { color: var(--ms-text); font-weight: 600; margin: 0.3rem 0; }
.timeline-desc { color: var(--ms-muted); font-size: 0.95rem; }
.value-card { background: transparent; border: 1px solid var(--ms-border); border-radius: 8px; padding: 1.5rem; height: 100%; transition: border-color 0.3s; }
.value-card:hover { border-color: var(--ms-accent); }
.value-icon { font-size: 1.8rem; color: var(--ms-accent); margin-bottom: 0.8rem; }
.value-title { color: var(--ms-text); font-weight: 600; margin-bottom: 0.5rem; }
.value-desc { color: var(--ms-muted); font-size: 0.95rem; }

/* --- 子页面追加 --- */
.disclaimer-hero { padding: 6rem 0 3rem; background: var(--ms-bg); }
.disclaimer-hero h1 { font-weight: 800; color: var(--ms-text); }
.disclaimer-hero .hero-sub { color: var(--ms-muted); max-width: 640px; margin: 1rem auto 0; }
.disclaimer-body { padding: 3rem 0 4rem; background: var(--ms-bg); }
.disclaimer-card { background: #fff; border-radius: 12px; padding: 2rem 2.5rem; box-shadow: 0 1px 3px rgba(0,0,0,.06); margin-bottom: 1.5rem; }
.disclaimer-card h2 { font-size: 1.4rem; font-weight: 700; color: var(--ms-text); margin-bottom: 1rem; display: flex; align-items: center; gap: .6rem; }
.disclaimer-card h2 i { color: var(--ms-primary); font-size: 1.2rem; }
.disclaimer-card p, .disclaimer-card li { color: var(--ms-muted); line-height: 1.75; font-size: .95rem; }
.disclaimer-card ul { padding-left: 1.2rem; }
.disclaimer-card li { margin-bottom: .5rem; }
.mono-tag { font-family: var(--ms-font-mono); font-size: .85rem; background: var(--ms-bg); padding: .15rem .45rem; border-radius: 4px; color: var(--ms-text); }
.disclaimer-hero { padding: 4rem 0 2rem; }
.disclaimer-card { padding: 1.5rem; }

/* --- 子页面追加 --- */
/* 本页专属少量样式 */
        .privacy-section { padding: 3rem 0; }
.privacy-section h2 { margin-bottom: 1.5rem; }
.privacy-section h3 { margin-top: 1.5rem; margin-bottom: 1rem; }
.privacy-card { background: #fff; border: 1px solid var(--ms-border); border-radius: 12px; padding: 2rem; margin-bottom: 2rem; box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.privacy-card h2 { color: var(--ms-primary); }
.privacy-list { list-style: none; padding-left: 0; }
.privacy-list li { padding: .5rem 0; padding-left: 1.5rem; position: relative; color: var(--ms-text); }
.privacy-list li::before { content: "🔒"; position: absolute; left: 0; font-size: .9rem; }
.privacy-updated { font-family: var(--ms-font-mono); color: var(--ms-muted); font-size: .9rem; }