/* 深空蓝紫 配色变量 */
        :root {
            --bg-primary: #1e1b4b;
            --text-main: #e0e7ff;
            --accent-1: #818cf8;
            --accent-2: #c084fc;
            --line-color: rgba(129, 140, 248, 0.25);
            --card-bg: rgba(129, 140, 248, 0.06);
            --grid-dot: rgba(192, 132, 252, 0.15);
        }

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

        body {
            background: var(--bg-primary);
            color: var(--text-main);
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            font-size: 0.92rem;
            font-weight: 400;
            line-height: 1.5;
            letter-spacing: -0.01em;
            position: relative;
            min-height: 100vh;
            overflow-x: hidden;
        }

        /* 点阵背景 */
        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(var(--grid-dot) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.4;
        }

        /* 细网格线覆盖 */
        body::after {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(to right, var(--line-color) 1px, transparent 1px),
                linear-gradient(to bottom, var(--line-color) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.3;
        }

        .container-relative {
            position: relative;
            z-index: 2;
        }

        /* 导航栏 */
        .custom-nav {
            background: rgba(30, 27, 75, 0.75);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line-color);
            transition: all 0.3s ease;
            padding: 0.5rem 0;
        }

        .custom-nav.scrolled {
            background: rgba(30, 27, 75, 0.9);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
            border-bottom-color: var(--accent-1);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--text-main) !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .navbar-brand i {
            color: var(--accent-2);
            font-size: 1.8rem;
        }

        .nav-link-custom {
            color: var(--text-main) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            position: relative;
            opacity: 0.85;
            transition: opacity 0.2s;
            font-size: 0.95rem;
            padding: 0.3rem 0 !important;
        }

        .nav-link-custom:hover {
            opacity: 1;
            color: var(--accent-1) !important;
        }

        .nav-link-custom.active {
            color: var(--accent-2) !important;
            font-weight: 600;
        }

        /* Hero 渐变文字 */
        .hero-title {
            font-weight: 900;
            font-size: clamp(2.2rem, 7vw, 4.8rem);
            line-height: 1.1;
            letter-spacing: -1px;
            background: linear-gradient(135deg, var(--accent-1), var(--accent-2), var(--accent-1));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }

        .hero-sub {
            font-size: 1.1rem;
            font-weight: 300;
            color: rgba(224, 231, 255, 0.75);
            max-width: 600px;
        }

        /* 浮动装饰 */
        @keyframes floatOrb {
            0% { transform: translateY(0px) scale(1); }
            50% { transform: translateY(-15px) scale(1.05); }
            100% { transform: translateY(0px) scale(1); }
        }

        .float-deco {
            position: absolute;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--accent-1) 0%, transparent 80%);
            opacity: 0.4;
            filter: blur(10px);
            animation: floatOrb 6s ease-in-out infinite;
            z-index: 1;
            pointer-events: none;
        }

        .float-deco-2 {
            width: 80px;
            height: 80px;
            right: 10%;
            top: 20%;
            animation-duration: 8s;
            background: radial-gradient(circle, var(--accent-2) 0%, transparent 70%);
        }

        .float-deco-3 {
            left: 70%;
            bottom: 10%;
            width: 30px;
            height: 30px;
            animation-duration: 5s;
            background: var(--accent-1);
            opacity: 0.3;
        }

        /* 区块通用 */
        .section {
            padding: 4.5rem 0 3rem;
            border-bottom: 1px solid var(--line-color);
        }

        .section-header {
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-header i {
            font-size: 1.8rem;
            color: var(--accent-2);
        }

        .section-header h2 {
            font-weight: 700;
            font-size: 1.8rem;
            letter-spacing: -0.5px;
            color: var(--text-main);
            margin: 0;
        }

        /* 特色卡片（三栏网格） */
        .feature-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--line-color);
            border-radius: 0;
            padding: 1.5rem 1.2rem;
            transition: transform 0.25s ease, border-color 0.25s, background 0.25s;
            position: relative;
            min-height: 180px;
        }

        .feature-card:hover {
            transform: scale(1.02);
            border-color: var(--accent-1);
            background: rgba(129, 140, 248, 0.1);
        }

        .feature-icon {
            font-size: 2.2rem;
            color: var(--accent-2);
            margin-bottom: 0.8rem;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: -0.3px;
        }

        .feature-card p {
            color: rgba(224, 231, 255, 0.7);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }

        /* 手风琴折叠 */
        .accordion-custom {
            border-top: 1px solid var(--line-color);
        }

        .accordion-item-custom {
            border: 1px solid var(--line-color);
            border-top: none;
            background: transparent;
            border-radius: 0 !important;
            margin-bottom: 0;
        }

        .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            padding: 1rem 1rem;
            box-shadow: none !important;
            border-bottom: 1px solid var(--line-color);
        }

        .accordion-button:not(.collapsed) {
            background: rgba(129, 140, 248, 0.08);
            color: var(--accent-1);
        }

        .accordion-button:focus {
            box-shadow: none;
        }

        .accordion-body {
            padding: 1rem 1.2rem;
            color: rgba(224, 231, 255, 0.8);
            background: rgba(0, 0, 0, 0.2);
            border-left: 2px solid var(--accent-1);
        }

        /* 介绍区块 - 点阵密集 */
        .intro-dense {
            font-size: 0.9rem;
            line-height: 1.7;
            columns: 2;
            column-gap: 3rem;
        }

        .intro-dense p {
            margin-bottom: 1rem;
            text-align: justify;
            break-inside: avoid;
        }

        .intro-dense strong {
            color: var(--accent-1);
        }

        /* CTA 区域 */
        .cta-section {
            text-align: center;
            padding: 5rem 0 4rem;
        }

        .cta-btn {
            background: linear-gradient(120deg, var(--accent-1), var(--accent-2));
            border: none;
            color: #fff;
            font-weight: 700;
            padding: 0.8rem 2.2rem;
            border-radius: 0;
            letter-spacing: 0.5px;
            font-size: 1rem;
            transition: 0.2s;
        }

        .cta-btn:hover {
            opacity: 0.9;
            transform: scale(1.02);
            color: #fff;
        }

        /* 友情链接 */
        .friend-links {
            border-top: 1px solid var(--line-color);
            border-bottom: 1px solid var(--line-color);
            padding: 1.8rem 0;
        }

        .friend-links h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-2);
        }

        /* 页脚 */
        .footer {
            padding: 2rem 0 3rem;
            color: rgba(224, 231, 255, 0.6);
            border-top: 1px solid var(--line-color);
            font-size: 0.85rem;
        }

        .footer a {
            color: var(--accent-1);
            text-decoration: none;
        }

        /* 滚动出现动效 */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 移动端适配 */
        @media (max-width: 992px) {
            .feature-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .feature-card-grid {
                grid-template-columns: 1fr;
            }
            .intro-dense {
                columns: 1;
            }
        }

        /* 紧凑排版 */
        .compact-text {
            font-size: 0.9rem;
        }

/* --- 子页面追加 --- */
.custom-nav .navbar-brand {
            color: var(--text-main);
            font-weight: 800;
            font-size: 1.35rem;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
.custom-nav .navbar-brand i {
            color: var(--accent-2);
        }
.custom-nav .nav-link-custom {
            color: var(--text-main) !important;
            font-weight: 500;
            margin-left: 20px;
            transition: all 0.2s;
            border-bottom: 2px solid transparent;
            padding-bottom: 4px;
        }
.custom-nav .nav-link-custom:hover,
        .custom-nav .nav-link-custom.active {
            color: var(--accent-1) !important;
            border-bottom-color: var(--accent-1);
        }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon { background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='rgba(224, 231, 255, 0.8)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"); }
/* 通用 */
        .container-relative { position: relative; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-header p { color: rgba(224, 231, 255, 0.7); max-width: 600px; margin: 0 auto; }
.reveal.active { opacity: 1; transform: none; }
/* 按钮 */
        .cta-btn {
            background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
            color: #1e1b4b;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 50px;
            text-decoration: none;
            display: inline-block;
            transition: transform 0.2s, box-shadow 0.2s;
            border: none;
            box-shadow: 0 4px 20px rgba(129, 140, 248, 0.3);
        }
/* 卡片 */
        .feature-card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
/* 手风琴 (Bootstrap 覆盖) */
        .accordion-item-custom {
            background: var(--card-bg);
            border: 1px solid var(--line-color);
            border-radius: 16px !important;
            margin-bottom: 16px;
            overflow: hidden;
            backdrop-filter: blur(4px);
        }
.accordion-button::after {
            filter: invert(0.8);
        }
/* 覆盖 bootstrap 白底 */
        .accordion-item, .accordion-body, .accordion-button { background: transparent !important; color: var(--text-main) !important; }
.friend-links a { color: var(--accent-1); margin: 0 10px; text-decoration: none; }
.friend-links a:hover { color: var(--accent-2); }
/* 浮动装饰 */
        .float-deco, .float-deco-2, .float-deco-3 {
            position: absolute;
            border-radius: 50%;
            filter: blur(60px);
            opacity: 0.25;
            z-index: -1;
        }
/* 本页专属 */
        .about-hero { padding: 80px 0 40px; }
.stat-badge { display: inline-block; background: var(--card-bg); border: 1px solid var(--line-color); border-radius: 30px; padding: 6px 18px; margin: 4px; color: var(--accent-1); font-weight: 500; }

/* --- 子页面追加 --- */
.disclaimer-wrap { max-width: 960px; margin: 0 auto; padding: 40px 20px; }
.disclaimer-title { font-size: 2.2rem; font-weight: 800; color: var(--text-main); margin-bottom: 20px; line-height: 1.3; }
.disclaimer-sub { color: var(--accent-1); font-size: 1.1rem; margin-bottom: 40px; }
.section-block { background: var(--card-bg); border: 1px solid var(--line-color); border-radius: 12px; padding: 28px; margin-bottom: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease; }
.section-block:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(129, 140, 248, 0.1); }
.section-block h2 { font-size: 1.4rem; font-weight: 700; color: var(--accent-2); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line-color); }
.section-block h3 { font-size: 1.15rem; font-weight: 600; color: var(--text-main); margin-top: 18px; margin-bottom: 10px; }
.section-block p { color: var(--text-main); font-size: 0.95rem; line-height: 1.7; margin-bottom: 12px; }
.section-block ul { padding-left: 20px; margin-bottom: 12px; }
.section-block li { color: var(--text-main); font-size: 0.95rem; line-height: 1.7; margin-bottom: 6px; }
.section-block li::marker { color: var(--accent-1); }
.highlight-box { background: rgba(192, 132, 252, 0.08); border-left: 4px solid var(--accent-2); padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 16px 0; }
.highlight-box p { margin-bottom: 0; font-size: 0.92rem; }
.update-date { display: inline-block; background: var(--card-bg); border: 1px solid var(--line-color); border-radius: 20px; padding: 6px 16px; font-size: 0.85rem; color: var(--accent-1); margin-top: 8px; }
.disclaimer-title { font-size: 1.7rem; }
.section-block { padding: 20px; }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 默认组件底色, 严格对齐深色主题 */
        .card, .card-body, .card-header, .card-footer,
        .form-control, .form-select, .accordion-item, .accordion-button,
        .list-group-item, .modal-content, .dropdown-menu {
            background: var(--card-bg) !important;
            color: var(--text-main) !important;
            border-color: var(--line-color) !important;
        }
.form-control::placeholder {
            color: rgba(224, 231, 255, 0.5);
        }
/* 列表与表格等 */
        .table {
            --bs-table-bg: transparent;
            --bs-table-color: var(--text-main);
            --bs-table-border-color: var(--line-color);
        }
/* 导航内高亮当前页 */
        .nav-link-custom.active {
            color: var(--accent-2) !important;
            text-shadow: 0 0 12px rgba(192, 132, 252, 0.5);
        }
/* 补充一些间距/文本样式, 与首页视觉完全一致 */
        .privacy-section {
            border-top: 1px solid var(--line-color);
        }
.privacy-title {
            color: var(--accent-1);
            font-weight: 700;
            letter-spacing: -0.01em;
        }
.privacy-rule {
            border-left: 3px solid var(--accent-2);
            padding-left: 1.5rem;
        }
.highlight-badge {
            background: rgba(192, 132, 252, 0.12);
            padding: .3rem .8rem;
            border-radius: 40px;
            display: inline-block;
            border: 1px solid var(--line-color);
            color: var(--accent-2);
            font-weight: 600;
            font-size: .9rem;
        }
.footer-inline-link a {
            color: var(--accent-1);
            text-decoration: none;
            margin: 0 8px;
            border-bottom: 1px dotted var(--accent-1);
        }
.footer-inline-link a:hover {
            color: var(--accent-2);
        }

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