:root {
            --primary: #4f46e5;
            --accent: #7c3aed;
            --bg: #f5f3ff;
            --text: #1e1b4b;
            --soft-shadow: 0 20px 40px -15px rgba(79, 70, 229, 0.15);
            --radius-lg: 24px;
            --radius-md: 16px;
        }

        * { font-family: 'Inter', system-ui, -apple-system, sans-serif; }

        body {
            background-color: var(--bg);
            color: var(--text);
            overflow-x: hidden;
        }

        /* 大圆角 + 柔和弥散阴影 */
        .bento-card {
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(4px);
            box-shadow: var(--soft-shadow);
            border: 1px solid rgba(255, 255, 255, 0.8);
            padding: 1.8rem;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .bento-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 50px -12px rgba(124, 58, 237, 0.25);
        }

        /* 思源宋体标题 (通过 Google Fonts 用 Inter 模拟, 但按设计说明可用) 这里使用 font-weight 800 + serif 近似 */
        h1, h2, h3, .font-serif {
            font-family: 'Times New Roman', 'Songti SC', 'SimSun', serif;
            font-weight: 900;
            letter-spacing: -0.02em;
        }

        /* 渐变文字 */
        .gradient-text {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 80%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        /* Hero 背景视差 */
        .hero-parallax {
            background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI2MDAiIGhlaWdodD0iNDAwIiB2aWV3Qm94PSIwIDAgNjAwIDQwMCI+PHBhdGggZD0iTTAgMzAwIEMxNTAgMjUwIDI1MCA0MDAgNDAwIDI4MCBDNTUwIDE2MCA2MDAgMjAwIDYwMCAyMDBMMTAgMjAwWiIgZmlsbD0icmdiYSg3OSw3MCwyMjksMC4xKSIvPjwvc3ZnPg==') no-repeat center center / cover;
            background-attachment: fixed;
            position: relative;
            z-index: 1;
        }
        .hero-parallax::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 40%, rgba(79, 70, 229, 0.1), transparent 60%);
            pointer-events: none;
            z-index: -1;
        }

        /* 浮动装饰 */
        .float-element {
            animation: float 6s ease-in-out infinite;
            display: inline-block;
        }
        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-15px); }
        }

        /* 回到顶部按钮 */
        #backToTop {
            display: none;
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 12px 18px;
            font-size: 1.2rem;
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.3);
            cursor: pointer;
            transition: opacity 0.3s;
        }
        #backToTop.show {
            display: block;
            opacity: 1;
        }

        /* 手风琴自定义 */
        .accordion-button:not(.collapsed) {
            background-color: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            font-weight: 600;
        }
        .accordion-item {
            border-radius: var(--radius-md) !important;
            border: 1px solid rgba(79, 70, 229, 0.1);
            overflow: hidden;
            margin-bottom: 12px;
            background: rgba(255,255,255,0.5);
        }

        /* 波浪分割 */
        .wave-divider {
            display: block;
            width: 100%;
            height: 80px;
            background: url('data:image/svg+xml;base64,PHN2ZyB2aWV3Qm94PSIwIDAgMTQ0MCA5MCIgd2lkdGg9IjE0NDAiIGhlaWdodD0iOTAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgcHJlc2VydmVBc3BlY3RSYXRpbz0ibm9uZSI+PHBhdGggZD0iTTAgNTAgTDQ4MCAzMCBMOTYwIDYwIEwxNDQwIDIwIEwxNDQwIDkwIEwwIDkwIFoiIGZpbGw9IiNmZmZmZmYiIG9wYWNpdHk9IjAuNSIvPjwvc3ZnPg==') no-repeat bottom center;
            background-size: cover;
            margin-top: -2px;
        }

        /* 导航链接 */
        .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text);
            padding: 0.5rem 1rem;
            border-radius: 30px;
        }
        .navbar-nav .nav-link:hover {
            background: rgba(79, 70, 229, 0.1);
        }

        /* 海报hover */
        .poster-hover {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-md);
        }
        .poster-hover .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(255,255,255,0.9);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            opacity: 0;
            transition: opacity 0.3s;
            pointer-events: none;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        .poster-hover:hover .play-btn {
            opacity: 1;
        }
        .poster-hover img {
            transition: transform 0.3s;
            width: 100%;
            display: block;
        }
        .poster-hover:hover img {
            transform: scale(1.05);
        }

        footer a {
            color: var(--text);
            opacity: 0.7;
            text-decoration: none;
            margin-right: 20px;
        }
        footer a:hover { opacity: 1; }

        /* Bento 网格 */
        .bento-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .bento-grid .col-span-2 { grid-column: span 2; }
        .bento-grid .col-span-1 { grid-column: span 1; }

        @media (max-width: 992px) {
            .bento-grid { grid-template-columns: repeat(2, 1fr); }
            .bento-grid .col-span-2 { grid-column: span 2; }
        }
        @media (max-width: 576px) {
            .bento-grid { grid-template-columns: 1fr; }
            .bento-grid .col-span-2 { grid-column: span 1; }
        }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 卡片等组件不出现白底黑字 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer {
            background: var(--bg);
            color: var(--text);
            border-color: rgba(79, 70, 229, 0.15);
        }
.accordion-item, .accordion-button, .accordion-body {
            background: var(--bg);
            color: var(--text);
            border-color: rgba(79, 70, 229, 0.15);
        }
/* 关于页特有装饰 */
        .about-hero {
            background: linear-gradient(135deg, rgba(79,70,229,0.05) 0%, rgba(124,58,237,0.08) 100%);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            margin-bottom: 2.5rem;
        }
.stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
.stat-label {
            font-size: 0.9rem;
            color: rgba(30, 27, 75, 0.7);
            letter-spacing: 0.5px;
        }
.milestone-item {
            position: relative;
            padding-left: 2rem;
            border-left: 3px solid var(--primary);
            margin-bottom: 1.8rem;
        }
.milestone-item::before {
            content: "";
            position: absolute;
            left: -8px;
            top: 6px;
            width: 13px;
            height: 13px;
            border-radius: 50%;
            background: var(--accent);
        }
.value-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(79, 70, 229, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
        }

/* --- 子页面追加 --- */
/* 保证联系页卡片、表单与深色紫罗兰背景协调 */
        .contact-card, .contact-card .card-body {
            background: var(--bg);
            color: var(--text);
            border: 1px solid rgba(79,70,229,0.15);
            border-radius: var(--radius-md);
            box-shadow: var(--soft-shadow);
        }
.contact-form .form-control {
            background: #ffffffd9;
            border: 1px solid rgba(79,70,229,0.2);
            color: var(--text);
            border-radius: 14px;
            padding: 0.9rem 1.2rem;
        }
.contact-form .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.15);
            background: #fff;
        }
.contact-form .form-label {
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.4rem;
        }
.btn-accent {
            background: var(--primary);
            border: none;
            color: white;
            font-weight: 600;
            padding: 0.8rem 2rem;
            border-radius: 60px;
            transition: all 0.2s ease;
            box-shadow: 0 8px 20px -6px rgba(79,70,229,0.5);
        }
.btn-accent:hover {
            background: var(--accent);
            transform: translateY(-2px);
            color: white;
        }
.list-unstyled li {
            margin-bottom: 0.75rem;
        }
.contact-meta i {
            color: var(--primary);
            width: 28px;
            text-align: center;
        }
.social-badge i {
            font-size: 1.5rem;
            color: var(--primary);
            margin-right: 15px;
            transition: 0.2s;
        }
.social-badge i:hover {
            color: var(--accent);
            transform: scale(1.1);
        }
/* 覆盖bootstrap可能带来的白底 */
        .navbar, .navbar-collapse, .navbar-brand, .nav-link {
            background: transparent !important;
        }
.nav-link.active {
            color: var(--primary) !important;
            font-weight: 700;
        }
.navbar-toggler {
            border-color: rgba(79,70,229,0.3);
        }

/* --- 子页面追加 --- */
/* 少量页面专属微调，保持与首页变量一致 */
        .ranking-hero {
            background: linear-gradient(135deg, var(--bg) 0%, #ede9fe 100%);
            border-bottom: 1px solid rgba(79,70,229,0.08);
        }
.filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
.filter-tabs .btn-tab {
            padding: 0.5rem 1.25rem;
            border-radius: 50rem;
            font-size: 0.9rem;
            font-weight: 600;
            background: rgba(255,255,255,0.6);
            color: var(--text);
            border: 1px solid rgba(79,70,229,0.15);
            transition: all 0.2s;
        }
.filter-tabs .btn-tab:hover, .filter-tabs .btn-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--soft-shadow);
        }
.rank-item {
            background: rgba(255,255,255,0.7);
            backdrop-filter: blur(4px);
            border-radius: var(--radius-md);
            padding: 1rem 1.25rem;
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid rgba(79,70,229,0.08);
        }
.rank-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--soft-shadow);
            border-color: rgba(79,70,229,0.2);
        }
.rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2rem;
            height: 2rem;
            border-radius: 0.8rem;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            margin-right: 0.75rem;
            flex-shrink: 0;
        }
.rank-badge.top3 {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #1e1b4b;
        }
.tag-group span {
            background: rgba(79,70,229,0.08);
            color: var(--primary);
            padding: 0.2rem 0.7rem;
            border-radius: 50rem;
            font-size: 0.75rem;
            font-weight: 600;
        }
.type-icon {
            color: var(--accent);
        }
.list-header {
            border-bottom: 2px solid rgba(79,70,229,0.1);
            padding-bottom: 0.5rem;
            margin-bottom: 1.2rem;
        }
.poster-thumb {
            width: 48px;
            height: 64px;
            object-fit: cover;
            border-radius: 8px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        }
/* 覆盖bootstrap默认白底类 */
        .card, .card-body, .list-group-item, .accordion-item {
            background: transparent !important;
            color: var(--text) !important;
            border-color: rgba(79,70,229,0.1) !important;
        }
.navbar {
            background: rgba(245,243,255,0.8) !important;
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(79,70,229,0.08);
        }
.btn-outline-light {
            border-color: rgba(79,70,229,0.2);
            color: var(--text);
        }

/* --- 子页面追加 --- */
.register-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: white;
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
.register-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
            animation: float 6s ease-in-out infinite;
        }
.register-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
            animation: float 8s ease-in-out infinite reverse;
        }
.register-card {
            background: white;
            border-radius: var(--radius-lg);
            box-shadow: var(--soft-shadow);
            padding: 40px;
            position: relative;
            z-index: 2;
            max-width: 500px;
            margin: -40px auto 60px;
        }
.form-control, .form-select {
            background: #f8f7ff;
            border: 2px solid #e8e6f5;
            border-radius: 12px;
            padding: 12px 16px;
            color: var(--text);
            transition: all 0.3s ease;
        }
.form-control:focus, .form-select:focus {
            background: white;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
            color: var(--text);
        }
.form-control::placeholder {
            color: #a5a0c9;
        }
.btn-register {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: white;
            border: none;
            border-radius: 12px;
            padding: 14px 32px;
            font-weight: 700;
            font-size: 1.1rem;
            width: 100%;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
.btn-register:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(79, 70, 229, 0.3);
            color: white;
        }
.benefit-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
.benefit-item {
            padding: 24px;
            border-radius: var(--radius-md);
            background: white;
            box-shadow: var(--soft-shadow);
            height: 100%;
            transition: transform 0.3s ease;
        }
.benefit-item:hover {
            transform: translateY(-5px);
        }
.faq-answer {
            color: #6b7280;
            line-height: 1.8;
        }
.login-links a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
.login-links a:hover {
            text-decoration: underline;
        }
.navbar-brand {
            color: var(--text) !important;
        }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 组件白底，与本页深色/紫色调统一 */
    .card, .card-body, .card-header, .card-footer {
      background: var(--card-bg, #ffffff);
      color: var(--text, #1e1b4b);
      border-color: var(--border-color, #e5e0f7);
    }
.accordion-item, .accordion-button {
      background: var(--card-bg, #ffffff);
      color: var(--text, #1e1b4b);
    }
.list-group-item {
      background: var(--card-bg, #ffffff);
      color: var(--text, #1e1b4b);
      border-color: #e5e0f7;
    }
.btn-outline-primary {
      border-color: var(--primary);
      color: var(--primary);
    }
.btn-outline-primary:hover {
      background: var(--primary);
      color: #fff;
    }
/* 确保页面背景与首页一致 */
    body {
      background: var(--bg);
      color: var(--text);
    }
/* 自定义免责声明区块的卡片质感 */
    .disclaimer-card {
      background: rgba(255,255,255,0.7);
      backdrop-filter: blur(6px);
      border: 1px solid rgba(79,70,229,0.15);
      border-radius: var(--radius-lg);
      box-shadow: var(--soft-shadow);
      padding: 2rem 1.8rem;
      transition: transform .2s ease;
    }
.disclaimer-card:hover {
      transform: translateY(-3px);
    }
.legal-icon {
      color: var(--primary);
      margin-right: 10px;
      width: 28px;
      text-align: center;
    }
h2, h3 {
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--text);
    }
/* 导航栏同款透明模糊效果（与首页一致） */
    .navbar {
      background: rgba(245, 243, 255, 0.8);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(79,70,229,0.1);
    }
.navbar .nav-link {
      color: var(--text);
      font-weight: 500;
    }
.navbar .nav-link.active {
      color: var(--primary);
      font-weight: 700;
    }
.navbar-brand span {
      font-weight: 800;
      letter-spacing: -0.01em;
    }
.footer-link {
      color: var(--text);
      opacity: 0.8;
      text-decoration: none;
    }
.footer-link:hover {
      color: var(--primary);
      opacity: 1;
    }

/* --- 子页面追加 --- */
/* 页面专属补充样式 */
        .privacy-hero {
            background: linear-gradient(135deg, var(--bg) 0%, rgba(79, 70, 229, 0.08) 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
.privacy-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(79, 70, 229, 0.1) 0%, transparent 70%);
            border-radius: 50%;
        }
.privacy-section {
            padding: 60px 0;
            border-bottom: 1px solid rgba(79, 70, 229, 0.08);
        }
.privacy-section:last-child {
            border-bottom: none;
        }
.privacy-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--soft-shadow);
            border: 1px solid rgba(79, 70, 229, 0.06);
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.privacy-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 25px 50px -12px rgba(79, 70, 229, 0.2);
        }
.privacy-card h3 {
            color: var(--text);
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
.privacy-card h3 i {
            color: var(--primary);
            font-size: 1.2rem;
        }
.privacy-card p {
            color: rgba(30, 27, 75, 0.75);
            line-height: 1.8;
            margin-bottom: 12px;
        }
.privacy-list {
            list-style: none;
            padding: 0;
            margin: 16px 0;
        }
.privacy-list li {
            color: rgba(30, 27, 75, 0.75);
            line-height: 1.8;
            padding: 6px 0;
            padding-left: 28px;
            position: relative;
        }
.privacy-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--primary);
            font-size: 0.9rem;
        }
.last-updated {
            display: inline-block;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
        }
.back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 45px;
            height: 45px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 1000;
        }
.back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
.back-to-top:hover {
            background: var(--accent);
            color: white;
            transform: translateY(-3px);
        }
.privacy-hero {
                padding: 60px 0 40px;
            }
.privacy-card {
                padding: 30px 20px;
            }
/* 覆盖 Bootstrap 导航栏配色 */
        .navbar {
            background: rgba(255, 255, 255, 0.95) !important;
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(79, 70, 229, 0.08);
        }
.navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
        }
.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(79, 70, 229, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
        }

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