:root {
            --primary: #22d3ee;
            --accent: #fb923c;
            --bg-deep: #0f172a;
            --text-light: #e2e8f0;
            --card-bg: #1e293b;
            --border-glow: rgba(34, 211, 238, 0.4);
        }

        * {
            box-sizing: border-box;
        }
        body {
            background-color: var(--bg-deep);
            color: var(--text-light);
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
            font-weight: 400;
        }
        h1, h2, h3, .display-strong {
            font-weight: 900;
            letter-spacing: -0.02em;
        }
        .navbar {
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(34, 211, 238, 0.2);
            box-shadow: 0 10px 30px -10px rgba(0,0,0,0.7);
            padding: 1rem 0;
        }
        .navbar-brand {
            font-weight: 900;
            font-size: 2rem;
            color: var(--primary) !important;
            text-shadow: 0 0 15px var(--border-glow);
        }
        .navbar-brand i {
            color: var(--accent);
            margin-right: 8px;
        }
        .nav-link {
            font-weight: 500;
            color: #cbd5e1 !important;
            margin: 0 0.5rem;
            transition: 0.2s;
            border-bottom: 2px solid transparent;
        }
        .nav-link:hover {
            color: var(--primary) !important;
            border-bottom-color: var(--accent);
        }
        .hero-section {
            position: relative;
            padding: 6rem 0 5rem;
            background: radial-gradient(circle at 20% 30%, rgba(34,211,238,0.15), transparent 40%);
        }
        .typewriter-title {
            font-size: clamp(2.8rem, 8vw, 5rem);
            font-weight: 900;
            line-height: 1.1;
            color: #fff;
            text-shadow: 0 10px 30px rgba(34,211,238,0.5);
            min-height: 1.5em;
            border-right: 0.08em solid var(--accent);
            white-space: nowrap;
            overflow: hidden;
            display: inline-block;
            animation: blink 0.8s step-end infinite;
            margin-bottom: 1rem;
        }
        @keyframes blink { 50% { border-color: transparent; } }
        .hero-sub {
            font-size: 1.25rem;
            color: #94a3b8;
            max-width: 600px;
            margin-top: 1.5rem;
        }
        .btn-glow {
            background: linear-gradient(145deg, var(--primary), #0ea5b7);
            border: none;
            box-shadow: 0 15px 25px -8px rgba(34,211,238,0.5);
            font-weight: 700;
            padding: 0.75rem 2rem;
            color: #0f172a;
        }
        .btn-glow:hover {
            background: var(--accent);
            color: #0f172a;
        }
        .section-title {
            font-size: 2.5rem;
            font-weight: 900;
            margin-bottom: 2.5rem;
            position: relative;
            display: inline-block;
            color: #f8fafc;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 80px;
            height: 5px;
            background: var(--accent);
            box-shadow: 0 0 15px var(--accent);
            border-radius: 5px;
        }
        .comparison-table {
            background: var(--card-bg);
            border-radius: 20px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255,255,255,0.05);
            padding: 1.5rem;
            overflow-x: auto;
        }
        .comparison-table table {
            --bs-table-bg: transparent;
            color: var(--text-light);
            min-width: 700px;
        }
        .comparison-table th {
            font-weight: 700;
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
        }
        .comparison-table td {
            padding: 1rem 0.75rem;
            border-bottom: 1px solid #334155;
        }
        .comparison-table .fa-check { color: var(--primary); }
        .comparison-table .fa-xmark { color: #64748b; }
        .table-highlight {
            background: rgba(34,211,238,0.1);
            box-shadow: inset 0 0 20px rgba(34,211,238,0.1);
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: 20px;
            padding: 2rem 1.5rem;
            height: 100%;
            box-shadow: 0 20px 35px -10px rgba(0,0,0,0.7);
            transition: all 0.2s ease;
            border: 1px solid #1e293b;
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: 0 30px 40px -10px rgba(34,211,238,0.2);
        }
        .feature-card i {
            font-size: 2.5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }
        .feature-card h3 {
            font-size: 1.4rem;
            font-weight: 800;
        }
        .steps-container {
            position: relative;
            margin-top: 2rem;
        }
        .step-item {
            display: flex;
            gap: 1.5rem;
            margin-bottom: 2rem;
            position: relative;
        }
        .step-number {
            font-family: 'Courier New', monospace;
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            text-shadow: 0 0 10px var(--primary);
            min-width: 60px;
            background: #1e293b;
            height: 60px;
            width: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 30px;
            border: 1px solid var(--primary);
        }
        .step-content h4 {
            font-weight: 700;
        }
        .faq-accordion .accordion-item {
            background: var(--card-bg);
            border: 1px solid #293548;
            margin-bottom: 1rem;
            border-radius: 15px;
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            background: #1e293b;
            color: var(--text-light);
            font-weight: 600;
            padding: 1.2rem 1.5rem;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: #1a2536;
            color: var(--primary);
            box-shadow: inset 0 -1px 0 var(--primary);
        }
        .faq-accordion .accordion-body {
            background: #182234;
            color: #cbd5e1;
        }
        .footer {
            background: #0b1222;
            border-top: 1px solid #1e293b;
            padding: 2rem 0;
            color: #94a3b8;
        }
        .friend-links {
            background: #111c30;
            border-radius: 12px;
            padding: 1.5rem;
            margin-top: 2rem;
            border: 1px solid #1e293b;
        }
        .link-item {
            color: var(--primary);
            margin-right: 1.5rem;
            text-decoration: none;
        }
        .link-item:hover { color: var(--accent); }
        .img-hover-zoom {
            overflow: hidden;
            border-radius: 12px;
            background: #1e293b;
        }
        .img-hover-zoom img {
            transition: transform 0.5s ease;
            width: 100%;
            display: block;
            min-height: 120px;
            opacity: 0.9;
        }
        .img-hover-zoom:hover img {
            transform: scale(1.08);
            opacity: 1;
        }
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }
        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }
        .text-accent {
            color: var(--accent);
        }
        .text-primary-custom { color: var(--primary); }
        .font-mono {
            font-family: 'Courier New', monospace;
        }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 卡片默认白底 */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glow);
            border-radius: 16px;
            padding: 2rem 1.5rem;
            height: 100%;
            transition: transform .3s ease, box-shadow .3s ease;
        }
.feature-card p {
            color: rgba(226,232,240,.78);
            font-size: .95rem;
            line-height: 1.7;
            margin: 0;
        }
/* 时间线/历程样式 */
        .timeline-item {
            position: relative;
            padding-left: 2rem;
            padding-bottom: 2.5rem;
            border-left: 2px solid var(--border-glow);
        }
.timeline-item:last-child {
            border-left: 2px solid transparent;
            padding-bottom: 0;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 12px var(--border-glow);
        }
.timeline-item .timeline-date {
            color: var(--accent);
            font-weight: 600;
            font-size: .9rem;
            letter-spacing: .5px;
            margin-bottom: .4rem;
        }
.timeline-item h4 {
            color: var(--text-light);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: .5rem;
        }
.timeline-item p {
            color: rgba(226,232,240,.75);
            font-size: .93rem;
            line-height: 1.7;
            margin: 0;
        }
/* 数据块 */
        .stat-block {
            text-align: center;
            padding: 2rem 1rem;
            background: rgba(30,41,59,.6);
            border: 1px solid rgba(34,211,238,.15);
            border-radius: 14px;
        }
.stat-block .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
.stat-block .stat-label {
            color: rgba(226,232,240,.7);
            font-size: .9rem;
            margin-top: .4rem;
        }
/* 导航高亮当前页 */
        .navbar .nav-link.active {
            color: var(--primary) !important;
            text-shadow: 0 0 10px rgba(34,211,238,.5);
        }
/* 引用块 */
        .quote-block {
            border-left: 4px solid var(--accent);
            padding: 1.2rem 1.5rem;
            background: rgba(251,146,60,.06);
            border-radius: 0 12px 12px 0;
            margin: 2rem 0;
        }
.quote-block p {
            color: var(--text-light);
            font-style: italic;
            font-size: 1.05rem;
            line-height: 1.8;
            margin: 0;
        }
.quote-block .quote-author {
            color: var(--accent);
            font-style: normal;
            font-weight: 600;
            margin-top: .8rem;
            font-size: .9rem;
        }
/* 小标题统一风格 */
        .about-section-title {
            color: var(--text-light);
            font-weight: 800;
            font-size: 1.8rem;
            margin-bottom: 1.2rem;
            position: relative;
            display: inline-block;
        }
.about-section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 40px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }

/* --- 子页面追加 --- */
/* 页面专属微调 */
        .disclaimer-hero {
            padding: 120px 0 60px;
            background: linear-gradient(180deg, rgba(15,23,42,.6) 0%, var(--bg-deep) 100%);
        }
.disclaimer-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glow);
            border-radius: 16px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            transition: all .3s ease;
        }
.disclaimer-card:hover {
            border-color: var(--primary);
            box-shadow: 0 0 25px rgba(34, 211, 238, 0.15);
        }
.disclaimer-card h2 {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.4rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.disclaimer-card h2 i {
            font-size: 1.2rem;
            color: var(--accent);
        }
.disclaimer-card p, .disclaimer-card li {
            color: var(--text-light);
            line-height: 1.8;
            font-size: .95rem;
            opacity: .9;
        }
.disclaimer-card ul {
            padding-left: 1.2rem;
        }
.highlight-box {
            background: rgba(34, 211, 238, 0.08);
            border-left: 4px solid var(--primary);
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
.highlight-box p {
            margin: 0;
            color: var(--text-light);
        }
.last-updated {
            font-size: .85rem;
            color: var(--text-light);
            opacity: .6;
            text-align: right;
            margin-top: 2rem;
        }
.disclaimer-hero { padding: 100px 0 40px; }
.disclaimer-card { padding: 1.5rem; }

/* --- 子页面追加 --- */
/* 本页专属微调 */
        .privacy-section {
            padding: 60px 0;
        }
.privacy-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glow);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.privacy-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(34, 211, 238, 0.15);
        }
.privacy-card h3 {
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
.privacy-card h3 i {
            font-size: 1.2rem;
            color: var(--accent);
        }
.privacy-card p, .privacy-card li {
            color: var(--text-light);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.privacy-card ul {
            padding-left: 20px;
            margin-bottom: 15px;
        }
.privacy-card li {
            margin-bottom: 8px;
        }
.privacy-badge {
            display: inline-block;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid var(--border-glow);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 8px;
            margin-bottom: 8px;
        }
.privacy-updated {
            background: rgba(251, 146, 60, 0.1);
            border: 1px solid rgba(251, 146, 60, 0.3);
            color: var(--accent);
            display: inline-block;
            padding: 6px 16px;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 30px;
        }
.section-subtitle {
            color: var(--text-light);
            text-align: center;
            font-size: 1rem;
            margin-bottom: 50px;
            opacity: 0.8;
        }
.contact-info {
            background: rgba(251, 146, 60, 0.08);
            border: 1px solid rgba(251, 146, 60, 0.2);
            border-radius: 8px;
            padding: 20px;
            margin-top: 20px;
        }
.contact-info p {
            margin-bottom: 8px;
        }
.contact-info i {
            color: var(--accent);
            margin-right: 8px;
        }
.table-of-contents {
            background: var(--card-bg);
            border: 1px solid var(--border-glow);
            border-radius: 12px;
            padding: 25px;
            margin-bottom: 40px;
        }
.table-of-contents h4 {
            color: var(--primary);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 15px;
        }
.table-of-contents a {
            color: var(--text-light);
            text-decoration: none;
            display: block;
            padding: 6px 0;
            font-size: 0.9rem;
            transition: color 0.3s;
        }
.table-of-contents a:hover {
            color: var(--primary);
        }
.table-of-contents a i {
            color: var(--accent);
            margin-right: 8px;
            font-size: 0.7rem;
        }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#e2e8f0 !important; border-color:rgba(255,255,255,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#e2e8f0 !important; }
.accordion-header { background:transparent !important; }