/* ===== 深夜石板 配色变量 ===== */
        :root {
            --primary: #38bdf8;
            --accent: #a78bfa;
            --bg: #0f172a;
            --text: #e2e8f0;
            --text-dim: #94a3b8;
            --card-bg: #1e293b;
            --border: #334155;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.5;
            position: relative;
            overflow-x: hidden;
        }

        /* 顶部细微噪点纹理 (overlay) */
        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            pointer-events: none;
            z-index: 0;
            opacity: 0.15;
            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='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
            background-size: 180px 180px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
        }
        a:hover {
            color: var(--accent);
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 滚动进度条 (顶部) */
        #scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 0%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            z-index: 9999;
            transition: width 0.05s;
        }

        /* 吸顶导航 */
        .navbar-custom {
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 12px 0;
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            letter-spacing: -0.5px;
            color: var(--text) !important;
            display: flex;
            align-items: center;
        }
        .navbar-brand i {
            color: var(--accent);
            margin-right: 10px;
            font-size: 1.8rem;
        }

        .nav-links {
            display: flex;
            gap: 28px;
            font-weight: 500;
        }
        .nav-links a {
            color: var(--text);
            font-size: 0.95rem;
            transition: color 0.2s;
            border-bottom: 2px solid transparent;
            padding-bottom: 4px;
        }
        .nav-links a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            color: var(--text);
            padding: 6px 12px;
            border-radius: 30px;
            font-size: 1.2rem;
        }

        /* 通用区块 */
        .section-block {
            padding: 50px 0 30px;
            position: relative;
            z-index: 2;
        }

        .section-title {
            font-weight: 700;
            font-size: 1.7rem;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            border-left: 6px solid var(--primary);
            padding-left: 16px;
        }
        .section-title i {
            color: var(--accent);
            margin-right: 10px;
        }

        /* 胶囊 / 圆角 */
        .pill-btn {
            border-radius: 50px;
            padding: 8px 22px;
            font-weight: 600;
            background-color: var(--primary);
            color: #0f172a;
            border: none;
            transition: 0.2s;
            display: inline-block;
        }
        .pill-btn:hover {
            background-color: var(--accent);
            color: #fff;
            transform: scale(1.02);
        }

        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
            padding: 20px;
            transition: transform 0.2s;
        }

        /* Hero 标签云 */
        .hero-tagcloud {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            margin: 24px 0;
        }
        .hero-tag {
            background: rgba(56, 189, 248, 0.08);
            border: 1px solid rgba(56, 189, 248, 0.3);
            color: var(--primary);
            padding: 8px 24px;
            border-radius: 60px;
            font-weight: 500;
            font-size: 0.95rem;
            backdrop-filter: blur(4px);
            transition: all 0.2s;
        }
        .hero-tag:hover {
            background: var(--primary);
            color: #0f172a;
        }

        /* 左右分屏双色块 */
        .split-block {
            display: flex;
            gap: 20px;
            align-items: stretch;
        }
        .split-left, .split-right {
            flex: 1;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border);
        }
        .split-left {
            background: linear-gradient(145deg, rgba(56,189,248,0.12), rgba(15,23,42,0.5));
        }
        .split-right {
            background: linear-gradient(145deg, rgba(167,139,250,0.12), rgba(15,23,42,0.5));
        }

        /* 时间线 */
        .timeline {
            position: relative;
            padding-left: 24px;
            border-left: 2px solid var(--border);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 22px;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -33px;
            top: 6px;
            width: 12px;
            height: 12px;
            background: var(--primary);
            border-radius: 50%;
            border: 2px solid var(--bg);
        }
        .timeline-item .time-label {
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.3px;
        }

        /* 对比表格 */
        .table-custom {
            border-collapse: separate;
            border-spacing: 0 10px;
            width: 100%;
        }
        .table-custom td, .table-custom th {
            padding: 16px 18px;
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
        }
        .table-custom th {
            background: #16233b;
            font-weight: 600;
        }

        /* 标签页切换 */
        .tab-container {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 20px;
        }
        .tab-head {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .tab-btn {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
            padding: 6px 18px;
            border-radius: 50px;
            font-weight: 500;
            transition: all 0.2s;
        }
        .tab-btn.active, .tab-btn:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #0f172a;
        }
        .tab-pane-content {
            display: none;
        }
        .tab-pane-content.active {
            display: block;
        }

        /* 滚动入场 */
        .fade-up {
            opacity: 0;
            transform: translateY(25px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 海报 hover 播放按钮 */
        .poster-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #1a2332;
            aspect-ratio: 3/4;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
        }
        .poster-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.7;
        }
        .play-overlay {
            position: absolute;
            inset: 0;
            background: rgba(15,23,42,0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.25s;
        }
        .poster-card:hover .play-overlay {
            opacity: 1;
        }
        .play-overlay i {
            font-size: 3rem;
            color: white;
            background: rgba(0,0,0,0.5);
            border-radius: 60px;
            padding: 16px 22px;
        }

        footer {
            border-top: 1px solid var(--border);
            padding: 40px 0 20px;
            margin-top: 40px;
            color: var(--text-dim);
            font-size: 0.9rem;
            background: rgba(15,23,42,0.5);
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 12px;
                margin-top: 12px;
                padding: 10px 0;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-toggle {
                display: block;
                margin-left: auto;
            }
            .split-block {
                flex-direction: column;
            }
            .navbar-brand {
                font-size: 1.4rem;
            }
        }

        .friend-links {
            background: rgba(255,255,255,0.02);
            padding: 24px;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
            margin: 40px 0 20px;
        }

/* --- 子页面追加 --- */
/* 本页专属微调 */
        .about-hero { padding: 80px 0 40px; }
.about-hero .section-title { font-size: 2.5rem; font-weight: 800; }
.about-hero .lead-text { font-size: 1.1rem; color: var(--text-dim); max-width: 700px; margin: 0 auto; }
.mission-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 28px; height: 100%; transition: transform .3s ease, border-color .3s ease; }
.mission-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.mission-card i { font-size: 2rem; color: var(--primary); margin-bottom: 16px; }
.mission-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.mission-card p { font-size: .9rem; color: var(--text-dim); line-height: 1.7; margin-bottom: 0; }
.stat-item { text-align: center; padding: 20px 10px; }
.stat-item .stat-num { font-size: 2.2rem; font-weight: 800; color: var(--primary); }
.stat-item .stat-label { font-size: .9rem; color: var(--text-dim); margin-top: 6px; }
.timeline-item h4 { color: var(--primary); font-weight: 700; }
.timeline-item p { color: var(--text-dim); }
.quote-block { border-left: 3px solid var(--accent); padding-left: 20px; font-style: italic; color: var(--text-dim); }
.about-content h3 { margin-top: 40px; margin-bottom: 16px; }
.about-content h3 i { color: var(--primary); margin-right: 10px; }
.about-content p { line-height: 1.9; color: var(--text-dim); }
.about-content strong { color: var(--text); }
.about-hero { padding: 50px 0 20px; }
.about-hero .section-title { font-size: 1.8rem; }

/* --- 子页面追加 --- */
/* 页面专属样式 - 覆盖 Bootstrap 组件默认白底黑字 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border);
        }
.list-group-item {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border);
        }
.form-control, .form-select {
            background: rgba(0,0,0,.35);
            color: var(--text);
            border-color: var(--border);
        }
.form-control::placeholder {
            color: rgba(255,255,255,.45);
        }
.form-label {
            color: var(--text);
        }
.nav-link, .navbar, .navbar-brand {
            background: transparent;
            color: var(--text);
        }
.dropdown-menu, .dropdown-item {
            background: var(--card-bg);
            color: var(--text);
        }
.accordion-item, .accordion-button, .accordion-body {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border);
        }
.modal-content, .modal-header, .modal-body {
            background: var(--card-bg);
            color: var(--text);
        }
.btn-light {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border);
        }
.btn-outline-* {
            color: var(--text);
            border-color: var(--border);
        }
/* 本页专属样式 */
        .disclaimer-hero {
            padding: 60px 0 40px;
            text-align: center;
        }
.disclaimer-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--primary);
        }
.disclaimer-hero p {
            color: var(--text-dim);
            max-width: 700px;
            margin: 0 auto;
        }
.disclaimer-section {
            margin-bottom: 40px;
        }
.disclaimer-section h2 {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.5rem;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border);
        }
.disclaimer-section h3 {
            color: var(--text);
            font-weight: 600;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }
.disclaimer-section p {
            color: var(--text-dim);
            line-height: 1.8;
            margin-bottom: 12px;
        }
.disclaimer-section ul, .disclaimer-section ol {
            color: var(--text-dim);
            line-height: 1.8;
            margin-bottom: 16px;
            padding-left: 24px;
        }
.disclaimer-section li {
            margin-bottom: 8px;
        }
.disclaimer-box {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            margin: 20px 0;
        }
.disclaimer-box strong {
            color: var(--accent);
        }
.disclaimer-update {
            color: var(--text-dim);
            font-size: 0.9rem;
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
.highlight-text {
            color: var(--primary);
            font-weight: 600;
        }
.warning-text {
            color: #fbbf24;
            font-weight: 500;
        }
.disclaimer-hero h1 {
                font-size: 1.8rem;
            }
.disclaimer-section h2 {
                font-size: 1.3rem;
            }

/* --- 子页面追加 --- */
.contact-hero { background: linear-gradient(135deg, rgba(56, 189, 248, 0.1) 0%, rgba(167, 139, 250, 0.1) 100%); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px; margin-bottom: 40px; }
.contact-method { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 28px; height: 100%; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.contact-method:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.contact-icon { font-size: 2.2rem; color: var(--primary); margin-bottom: 16px; }
.contact-form-wrap { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px; }
.form-label-custom { color: var(--text); font-weight: 600; margin-bottom: 8px; font-size: 0.95rem; }
.form-control { background: rgba(0,0,0,0.35); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 16px; transition: border-color 0.3s, box-shadow 0.3s; }
.form-control:focus { background: rgba(0,0,0,0.45); color: var(--text); border-color: var(--primary); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15); }
.btn-submit { background: var(--primary); color: #0f172a; border: none; padding: 12px 32px; font-weight: 700; border-radius: var(--radius-sm); transition: all 0.3s; }
.btn-submit:hover { background: #0ea5e9; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3); }
.response-time { color: var(--text-dim); font-size: 0.85rem; margin-top: 12px; }
.alert-custom { background: rgba(56, 189, 248, 0.1); border: 1px solid var(--primary); color: var(--text); border-radius: var(--radius-sm); padding: 14px 18px; margin-bottom: 24px; }
.security-note { background: rgba(167, 139, 250, 0.1); border-left: 3px solid var(--accent); padding: 12px 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin-top: 24px; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px; margin-bottom: 16px; }
.faq-item h4 { color: var(--primary); font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; }
.faq-item p { color: var(--text-dim); margin-bottom: 0; line-height: 1.7; }