:root {
            --primary: #eab308;
            --accent: #f59e0b;
            --bg-dark: #18181b;
            --text-light: #fafafa;
            --radius-lg: 24px;
            --radius-md: 18px;
            --radius-sm: 12px;
            --shadow-soft: 0 20px 35px -8px rgba(0, 0, 0, 0.5), 0 8px 20px -6px rgba(0, 0, 0, 0.3);
            --border-glow: 0 0 0 1px rgba(234, 179, 8, 0.2), 0 10px 30px -10px rgba(234, 179, 8, 0.15);
        }

        body {
            background-color: var(--bg-dark);
            color: var(--text-light);
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.7;
            font-weight: 400;
            letter-spacing: 0.01em;
            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='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.06'/%3E%3C/svg%3E");
            background-attachment: fixed;
        }

        /* 大圆角、柔和阴影通用类 */
        .radius-card {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-soft);
            background: rgba(24, 24, 27, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(234, 179, 8, 0.12);
            transition: transform 0.25s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .radius-card:hover {
            transform: scale(1.02);
            border-color: rgba(234, 179, 8, 0.45);
            box-shadow: 0 25px 40px -12px rgba(234, 179, 8, 0.25), 0 8px 20px -8px rgba(0, 0, 0, 0.5);
        }

        /* 导航 */
        .navbar-custom {
            background: rgba(24, 24, 27, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(234, 179, 8, 0.15);
            padding: 0.8rem 1.5rem;
            border-radius: 0;
            margin-bottom: 0;
        }

        .navbar-custom .navbar-brand {
            font-weight: 800;
            font-size: 1.6rem;
            color: var(--primary) !important;
            letter-spacing: -0.02em;
            text-shadow: 0 4px 20px rgba(234, 179, 8, 0.3);
        }

        .nav-link-custom {
            color: #e5e5e5;
            font-weight: 500;
            margin: 0 0.5rem;
            border-radius: 50px;
            padding: 0.4rem 1rem !important;
            transition: all 0.2s;
        }

        .nav-link-custom:hover {
            color: var(--primary) !important;
            background: rgba(234, 179, 8, 0.08);
        }

        .navbar-toggler {
            border-color: rgba(234, 179, 8, 0.5);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(234, 179, 8, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
        }

        /* 左侧侧栏 + 右侧瀑布流布局 */
        .layout-wrapper {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 2rem;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
        }

        .sidebar {
            position: sticky;
            top: 100px;
            height: fit-content;
            border-radius: var(--radius-lg);
            background: rgba(24, 24, 27, 0.6);
            padding: 1.5rem 1rem;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(234, 179, 8, 0.12);
            box-shadow: var(--shadow-soft);
        }

        .sidebar h5 {
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px dashed rgba(234, 179, 8, 0.3);
        }

        .sidebar .side-link {
            display: block;
            padding: 0.7rem 1rem;
            color: #d4d4d4;
            text-decoration: none;
            border-radius: 50px;
            margin-bottom: 0.3rem;
            font-weight: 500;
            transition: 0.2s;
            border: 1px solid transparent;
        }

        .sidebar .side-link i {
            width: 1.8rem;
            color: var(--accent);
        }

        .sidebar .side-link:hover {
            background: rgba(234, 179, 8, 0.08);
            color: var(--primary);
            border-color: rgba(234, 179, 8, 0.2);
        }

        /* 瀑布流卡片网格 */
        .waterfall-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 2rem;
            align-items: start;
        }

        .card-item {
            background: #202023;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: var(--shadow-soft);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .card-item img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            background: linear-gradient(145deg, #2d2d30, #1f1f22);
            display: block;
            opacity: 0.7;
            transition: opacity 0.3s;
        }

        .card-item .card-body-custom {
            padding: 1.4rem;
        }

        .card-item h5 {
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }

        .card-item p {
            color: #b3b3b3;
            font-size: 0.9rem;
        }

        /* Hero 区域 */
        .hero-section {
            padding: 4rem 0 2.5rem;
            text-align: center;
        }

        .hero-section h1 {
            font-weight: 800;
            font-size: clamp(2.6rem, 5vw, 4rem);
            color: var(--primary);
            letter-spacing: -0.02em;
            text-shadow: 0 10px 40px rgba(234, 179, 8, 0.3);
            line-height: 1.2;
        }

        .hero-section .lead {
            color: #cfcfcf;
            font-weight: 300;
            max-width: 650px;
            margin: 1.5rem auto;
        }

        .btn-gold {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            color: #18181b;
            font-weight: 700;
            padding: 0.8rem 2.2rem;
            border-radius: 60px;
            box-shadow: 0 8px 24px rgba(234, 179, 8, 0.25);
            transition: all 0.2s;
        }

        .btn-outline-gold {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            padding: 0.7rem 2.2rem;
            border-radius: 60px;
            transition: all 0.2s;
        }

        .btn-outline-gold:hover {
            background: rgba(234, 179, 8, 0.1);
        }

        /* 表格区域 */
        .table-compare {
            background: rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid rgba(234, 179, 8, 0.2);
        }

        .table-compare table {
            color: #ddd;
        }

        .table-compare th {
            color: var(--primary);
            font-weight: 600;
        }

        /* FAQ 手风琴 */
        .accordion-item {
            background-color: rgba(24, 24, 27, 0.6);
            border: 1px solid rgba(234, 179, 8, 0.1);
            border-radius: var(--radius-md) !important;
            margin-bottom: 1rem;
            overflow: hidden;
        }

        .accordion-button {
            background: transparent;
            color: var(--text-light);
            font-weight: 600;
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(234, 179, 8, 0.1);
            color: var(--primary);
        }

        .accordion-button::after {
            filter: brightness(0.8) sepia(1) hue-rotate(5deg);
        }

        .accordion-body {
            color: #c9c9c9;
            border-top: 1px solid rgba(234, 179, 8, 0.05);
        }

        /* 图标列表 */
        .feature-item i {
            color: var(--primary);
            font-size: 1.6rem;
            width: 3rem;
            text-align: center;
        }

        /* 友情链接 */
        .friend-links {
            background: rgba(0, 0, 0, 0.2);
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin-top: 2rem;
        }

        .footer-area {
            border-top: 1px solid rgba(234, 179, 8, 0.15);
            padding: 2rem 0;
            color: #9d9d9d;
        }

        /* 滚动显现动效 */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
        }

        .fade-up.in-view {
            opacity: 1;
            transform: translateY(0);
        }

        /* 移动端适配 */
        @media (max-width: 992px) {
            .layout-wrapper {
                grid-template-columns: 1fr;
                padding: 0 1rem;
            }
            .sidebar {
                position: static;
                margin-bottom: 1rem;
            }
        }

/* --- 子页面追加 --- */
/* 确保任何bootstrap组件都继承站点配色 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer,
        .form-control, .form-select, .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-color: transparent !important;
            color: var(--text-light) !important;
            border-color: rgba(234, 179, 8, 0.2) !important;
        }
/* 工具类补充 */
        .about-hero {
            background: linear-gradient(145deg, rgba(234,179,8,0.06) 0%, rgba(24,24,27,0.9) 100%);
            border-bottom: 1px solid rgba(234,179,8,0.15);
        }
.about-section-title {
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--primary);
            border-left: 4px solid var(--primary);
            padding-left: 1rem;
            margin-bottom: 1.75rem;
        }
.stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }
.stat-label {
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            opacity: 0.75;
        }
.friend-links a {
            color: var(--text-light);
            opacity: 0.7;
            transition: 0.2s;
        }
.friend-links a:hover { opacity: 1; color: var(--primary); }
/* 确保卡片背景跟站点一致 */
        .bg-soft-dark {
            background: rgba(255,255,255,0.02);
            border: 1px solid rgba(234,179,8,0.12);
        }

/* --- 子页面追加 --- */
/* 本页小标题统一加一点金色点缀，与首页风格呼应 */
        .section-title-custom {
            font-weight: 700;
            letter-spacing: -0.01em;
            border-left: 4px solid var(--primary);
            padding-left: 1rem;
            margin-bottom: 1.5rem;
        }
.step-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(234, 179, 8, 0.15);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.25rem;
            margin-right: 12px;
            flex-shrink: 0;
        }
.guide-card {
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            height: 100%;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: transform .2s ease, border-color .2s;
        }
.guide-card:hover {
            border-color: rgba(234, 179, 8, 0.3);
            transform: translateY(-3px);
        }
.tip-box {
            background: rgba(234, 179, 8, 0.08);
            border-left: 3px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 1rem 1.25rem;
            margin: 2rem 0;
        }
/* 确保任何bootstrap组件不会白底黑字 (本页无card，但以防万一) */
        .card, .card-body, .list-group-item, .accordion-item, .accordion-button, .accordion-body {
            background: transparent;
            color: var(--text-light);
            border-color: rgba(255,255,255,0.1);
        }
.form-control, .form-select {
            background: rgba(0,0,0,0.3);
            border-color: rgba(255,255,255,0.15);
            color: var(--text-light);
        }
.form-control::placeholder {
            color: rgba(255,255,255,0.4);
        }

/* --- 子页面追加 --- */
/* 本页专属微调，配合全局 style.css */
        .privacy-hero {
            background: radial-gradient(circle at 20% 30%, rgba(234,179,8,.08), transparent 60%);
            border-bottom: 1px solid rgba(234,179,8,.15);
        }
.privacy-section {
            background: transparent;
            border: 1px solid rgba(234,179,8,.12);
            border-radius: var(--radius-lg);
            padding: 2rem 1.8rem;
            box-shadow: var(--shadow-soft);
            transition: transform .25s ease, box-shadow .25s ease;
        }
.privacy-section:hover {
            transform: translateY(-3px);
            box-shadow: var(--border-glow);
        }
.privacy-section h2 {
            color: var(--primary);
            font-weight: 700;
            letter-spacing: -.02em;
            border-left: 4px solid var(--accent);
            padding-left: 1rem;
            margin-bottom: 1.2rem;
        }
.privacy-section h3 {
            color: var(--text-light);
            font-weight: 600;
            margin-top: 1.8rem;
            font-size: 1.3rem;
        }
.privacy-section p, .privacy-section li {
            color: rgba(250,250,250,.85);
            line-height: 1.75;
        }
.privacy-section ul, .privacy-section ol {
            padding-left: 1.4rem;
        }
.privacy-section a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(245,158,11,.4);
        }
.privacy-section a:hover {
            color: var(--primary);
            text-decoration-color: var(--primary);
        }
.badge-legal {
            background: rgba(234,179,8,.12);
            border: 1px solid rgba(234,179,8,.3);
            color: var(--primary);
            font-size: .8rem;
            padding: .3rem .8rem;
            border-radius: 40px;
            display: inline-block;
            margin-bottom: 1rem;
            letter-spacing: .02em;
        }
.table-compare th, .table-compare td {
            border-color: rgba(234,179,8,.15) !important;
            background: transparent !important;
            color: var(--text-light) !important;
        }
.table-compare thead th {
            background: rgba(234,179,8,.08) !important;
            color: var(--primary) !important;
        }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 组件配色与站点一致（覆盖白底黑字） */
    .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-color: transparent !important;
      color: var(--text-light) !important;
      border-color: rgba(234, 179, 8, 0.2) !important;
    }
/* 修正 bootstrap 的 .accordion-button 背景与箭头颜色 */
    .accordion-button:not(.collapsed) {
      background-color: rgba(234, 179, 8, 0.08) !important;
      color: var(--primary) !important;
      box-shadow: none !important;
    }
/* 导航高亮当前页 (免责声明) */
    .nav-link-custom.active {
      color: var(--primary) !important;
      font-weight: 600;
    }
/* 自定义小卡片 hover 微调 */
    .card-item:hover {
      transform: translateY(-4px);
      border-color: rgba(234, 179, 8, 0.4);
    }
/* 标题金色下划线点缀 */
    .disclaimer-title-border {
      border-bottom: 2px solid rgba(234, 179, 8, 0.25);
      padding-bottom: 0.4rem;
    }
/* 列表圆点金色 */
    .gold-dot-list li::marker {
      color: var(--primary);
    }

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