:root {
        --main-color: #818cf8;
        --accent-color: #c084fc;
        --bg-color: #1e1b4b;
        --text-color: #e0e7ff;
        --card-bg: #2a2859;
        --border-color: rgba(129, 140, 248, 0.2);
        --radius: 8px;
        --shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
    }

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

    body {
        font-family: "Inter", "Source Han Sans CN", "Noto Sans CJK SC", "思源黑体", sans-serif;
        background-color: var(--bg-color);
        color: var(--text-color);
        line-height: 1.75;
        overflow-x: hidden;
        position: relative;
    }

    /* 渐变光晕背景 */
    body::before {
        content: '';
        position: fixed;
        top: -15%;
        left: -10%;
        width: 50%;
        height: 50%;
        background: radial-gradient(circle, rgba(192, 132, 252, 0.15) 0%, transparent 70%);
        z-index: 0;
        pointer-events: none;
    }

    body::after {
        content: '';
        position: fixed;
        bottom: -20%;
        right: -10%;
        width: 60%;
        height: 60%;
        background: radial-gradient(circle, rgba(129, 140, 248, 0.12) 0%, transparent 70%);
        z-index: 0;
        pointer-events: none;
    }

    h1, h2, h3, h4, h5 {
        font-family: "Source Han Serif SC", "Noto Serif CJK SC", "思源宋体", serif;
        font-weight: 700;
        letter-spacing: 0.02em;
    }

    .navbar {
        background: rgba(30, 27, 75, 0.85);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        z-index: 999;
        position: relative;
    }

    .navbar-brand {
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--text-color) !important;
        letter-spacing: 0.02em;
    }

    .navbar-brand i {
        color: var(--accent-color);
        margin-right: 6px;
    }

    .navbar-nav .nav-link {
        color: var(--text-color) !important;
        opacity: 0.85;
        font-weight: 500;
        padding: 0.5rem 1rem;
        transition: all 0.3s;
        font-size: 0.95rem;
    }

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

    .navbar-toggler {
        border-color: var(--border-color);
        color: var(--text-color);
    }

    .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(224,231,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    .hero-section {
        position: relative;
        padding: 100px 0 80px;
        z-index: 1;
        text-align: center;
    }

    .hero-title {
        font-size: 3.2rem;
        font-weight: 900;
        line-height: 1.2;
        margin-bottom: 20px;
        min-height: 4rem;
        color: #fff;
    }

    .hero-title .typed-text {
        display: inline-block;
    }

    .hero-subtitle {
        font-size: 1.15rem;
        max-width: 680px;
        margin: 0 auto 30px;
        opacity: 0.9;
    }

    .hero-btn-group .btn-primary {
        background: linear-gradient(135deg, var(--main-color), var(--accent-color));
        border: none;
        border-radius: var(--radius);
        padding: 12px 32px;
        font-weight: 600;
        box-shadow: 0 8px 20px rgba(129, 140, 248, 0.3);
        transition: all 0.3s;
    }

    .hero-btn-group .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 28px rgba(129, 140, 248, 0.4);
    }

    .hero-btn-group .btn-outline-light {
        border-color: var(--border-color);
        color: var(--text-color);
        border-radius: var(--radius);
        padding: 12px 32px;
        font-weight: 600;
        transition: all 0.3s;
    }

    .hero-btn-group .btn-outline-light:hover {
        background: rgba(129, 140, 248, 0.1);
        border-color: var(--main-color);
    }

    /* 横向时间线 / 步骤条 */
    .timeline-section {
        position: relative;
        padding: 60px 0;
        z-index: 1;
    }

    .section-title {
        text-align: center;
        font-size: 2rem;
        margin-bottom: 40px;
        color: #fff;
        position: relative;
    }

    .section-title::after {
        content: '';
        display: block;
        width: 60px;
        height: 3px;
        background: linear-gradient(90deg, var(--main-color), var(--accent-color));
        margin: 12px auto 0;
        border-radius: 3px;
    }

    .horizontal-timeline {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        flex-wrap: nowrap;
        position: relative;
        padding: 20px 0;
    }

    .horizontal-timeline::before {
        content: '';
        position: absolute;
        top: 50px;
        left: 5%;
        right: 5%;
        height: 2px;
        background: linear-gradient(90deg, var(--main-color), var(--accent-color));
        opacity: 0.3;
        z-index: 0;
    }

    .timeline-step {
        flex: 1;
        text-align: center;
        padding: 0 15px;
        position: relative;
        z-index: 1;
    }

    .timeline-icon {
        width: 70px;
        height: 70px;
        border-radius: 50%;
        background: var(--card-bg);
        border: 2px solid var(--main-color);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 15px;
        font-size: 1.8rem;
        color: var(--main-color);
        transition: all 0.3s;
        box-shadow: 0 0 20px rgba(129, 140, 248, 0.2);
    }

    .timeline-step:hover .timeline-icon {
        background: linear-gradient(135deg, var(--main-color), var(--accent-color));
        color: #fff;
        transform: scale(1.1);
    }

    .timeline-step h4 {
        font-size: 1.2rem;
        margin-bottom: 8px;
        color: #fff;
    }

    .timeline-step p {
        font-size: 0.9rem;
        opacity: 0.8;
    }

    /* 特色卡片 */
    .features-section {
        padding: 60px 0;
        position: relative;
        z-index: 1;
    }

    .feature-card {
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius);
        padding: 30px;
        transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
        height: 100%;
        position: relative;
        overflow: hidden;
    }

    .feature-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--main-color), var(--accent-color));
        opacity: 0;
        transition: opacity 0.3s;
    }

    .feature-card:hover {
        transform: scale(1.03);
        border-color: var(--main-color);
        box-shadow: var(--shadow);
    }

    .feature-card:hover::before {
        opacity: 1;
    }

    .feature-icon {
        font-size: 2.2rem;
        color: var(--accent-color);
        margin-bottom: 15px;
    }

    .feature-card h5 {
        font-size: 1.2rem;
        margin-bottom: 10px;
        color: #fff;
    }

    .feature-card p {
        font-size: 0.95rem;
        opacity: 0.85;
    }

    /* 对比表格 */
    .comparison-section {
        padding: 60px 0;
        position: relative;
        z-index: 1;
    }

    .comparison-table {
        width: 100%;
        border-collapse: collapse;
        background: var(--card-bg);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
    }

    .comparison-table th, .comparison-table td {
        padding: 18px 24px;
        text-align: center;
        border-bottom: 1px solid var(--border-color);
        font-size: 0.95rem;
    }

    .comparison-table th {
        background: rgba(129, 140, 248, 0.1);
        font-weight: 700;
        color: #fff;
    }

    .comparison-table tr:last-child td {
        border-bottom: none;
    }

    .comparison-table .feature-col {
        text-align: left;
        font-weight: 600;
    }

    .comparison-table .fa-check {
        color: var(--main-color);
    }

    .comparison-table .fa-xmark {
        color: #f87171;
    }

    /* 长文介绍 */
    .story-section {
        padding: 60px 0;
        position: relative;
        z-index: 1;
    }

    .story-content {
        max-width: 800px;
        margin: 0 auto;
    }

    .numbered-list {
        list-style: none;
        counter-reset: story-counter;
        padding: 0;
    }

    .numbered-list li {
        counter-increment: story-counter;
        margin-bottom: 20px;
        padding-left: 50px;
        position: relative;
    }

    .numbered-list li::before {
        content: counter(story-counter);
        position: absolute;
        left: 0;
        top: 4px;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--main-color), var(--accent-color));
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 0.9rem;
    }

    .numbered-list li strong {
        display: block;
        font-size: 1.1rem;
        color: #fff;
        margin-bottom: 6px;
    }

    /* FAQ */
    .faq-section {
        padding: 60px 0;
        position: relative;
        z-index: 1;
    }

    .accordion-item {
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius) !important;
        margin-bottom: 12px;
        overflow: hidden;
    }

    .accordion-button {
        background: var(--card-bg);
        color: var(--text-color);
        font-weight: 600;
        padding: 20px 24px;
        font-family: inherit;
    }

    .accordion-button:not(.collapsed) {
        background: rgba(129, 140, 248, 0.15);
        color: #fff;
        box-shadow: none;
    }

    .accordion-button:focus {
        box-shadow: none;
        border-color: var(--main-color);
    }

    .accordion-button::after {
        filter: invert(70%) sepia(60%) saturate(500%) hue-rotate(210deg);
    }

    .accordion-body {
        padding: 20px 24px;
        opacity: 0.9;
        border-top: 1px solid var(--border-color);
    }

    /* CTA */
    .cta-section {
        padding: 80px 0;
        position: relative;
        z-index: 1;
        text-align: center;
        background: linear-gradient(135deg, rgba(129, 140, 248, 0.1), rgba(192, 132, 252, 0.1));
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }

    .cta-section h2 {
        font-size: 2.2rem;
        margin-bottom: 15px;
        color: #fff;
    }

    .cta-section p {
        max-width: 600px;
        margin: 0 auto 30px;
        opacity: 0.9;
    }

    /* 友情链接 */
    .friend-links {
        padding: 40px 0;
        background: rgba(30, 27, 75, 0.7);
        border-top: 1px solid var(--border-color);
        position: relative;
        z-index: 1;
    }

    .friend-links h6 {
        color: var(--main-color);
        font-weight: 600;
        margin-bottom: 10px;
    }

    .friend-links .link-text {
        font-size: 0.9rem;
        opacity: 0.8;
    }

    /* 页脚 */
    footer {
        background: #1a1740;
        padding: 30px 0;
        position: relative;
        z-index: 1;
        border-top: 1px solid var(--border-color);
        text-align: center;
    }

    footer .footer-brand {
        font-size: 1.3rem;
        font-weight: 800;
        color: var(--text-color);
    }

    footer .footer-links a {
        color: var(--text-color);
        opacity: 0.7;
        text-decoration: none;
        font-size: 0.9rem;
        margin: 0 10px;
        transition: all 0.3s;
    }

    footer .footer-links a:hover {
        opacity: 1;
        color: var(--main-color);
    }

    footer p {
        font-size: 0.85rem;
        opacity: 0.6;
        margin-top: 15px;
    }

    /* 滚动淡入动画 */
    .fade-up {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

    /* 光标动画 */
    .typed-cursor {
        display: inline-block;
        width: 3px;
        height: 0.9em;
        background: var(--accent-color);
        margin-left: 4px;
        animation: blink 0.7s infinite;
        vertical-align: baseline;
    }

    @keyframes blink {
        0%, 100% { opacity: 1; }
        50% { opacity: 0; }
    }

    /* 响应式 */
    @media (max-width: 768px) {
        .hero-title {
            font-size: 2rem;
        }
        .horizontal-timeline {
            flex-direction: column;
            align-items: center;
        }
        .horizontal-timeline::before {
            display: none;
        }
        .timeline-step {
            margin-bottom: 30px;
            max-width: 300px;
        }
        .navbar-nav {
            padding: 15px 0;
        }
        .navbar-nav .nav-link {
            padding: 8px 16px;
        }
        .comparison-table {
            font-size: 0.8rem;
        }
        .comparison-table th, .comparison-table td {
            padding: 12px 10px;
        }
    }

    @media (max-width: 576px) {
        .hero-section {
            padding: 60px 0 50px;
        }
        .hero-title {
            font-size: 1.6rem;
        }
        .section-title {
            font-size: 1.5rem;
        }
    }

/* --- 子页面追加 --- */
/* 确保 Bootstrap 组件不会出现白底黑字，强制使用站点配色 */
        .about-card, .about-card .card-body {
            background: var(--card-bg);
            color: var(--text-color);
            border: 1px solid var(--border-color);
        }
.about-card .card-title {
            color: var(--main-color);
        }
.about-card .card-text {
            color: var(--text-color);
        }
.about-list-group-item {
            background: var(--card-bg);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.about-list-group-item:hover {
            background: rgba(129, 140, 248, 0.1);
        }
.about-badge {
            background: rgba(129, 140, 248, 0.2);
            color: var(--main-color);
            border: 1px solid var(--border-color);
        }
.about-quote {
            border-left: 4px solid var(--main-color);
            background: rgba(129, 140, 248, 0.08);
            padding: 1.5rem 2rem;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
.about-value-icon {
            color: var(--accent-color);
        }
.about-stats-number {
            color: var(--main-color);
            font-weight: 800;
            font-size: 2.2rem;
        }
.about-stats-label {
            color: var(--text-color);
            opacity: 0.8;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
        }
/* 导航高亮当前页 */
        .nav-link.active-about {
            color: var(--main-color) !important;
            font-weight: 700;
        }
.about-section-title {
            font-weight: 800;
            color: var(--text-color);
            position: relative;
            padding-bottom: 0.75rem;
            margin-bottom: 2rem;
        }
.about-section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--main-color), var(--accent-color));
            border-radius: 3px;
        }
.about-divider {
            border: none;
            border-top: 1px solid var(--border-color);
            opacity: 0.6;
            margin: 3rem 0;
        }

/* --- 子页面追加 --- */
/* 本页专属样式——免责声明页 */
        .legal-section {
            padding: 60px 0;
        }
.legal-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px;
            margin-bottom: 28px;
            box-shadow: var(--shadow);
        }
.legal-card h2 {
            color: var(--main-color);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.legal-card h2 i {
            color: var(--accent-color);
            font-size: 1.3rem;
        }
.legal-card p {
            color: var(--text-color);
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 14px;
            opacity: 0.9;
        }
.legal-card ul {
            padding-left: 20px;
            margin-bottom: 14px;
        }
.legal-card ul li {
            color: var(--text-color);
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 6px;
            opacity: 0.9;
        }
.legal-card strong {
            color: var(--main-color);
        }
.legal-highlight {
            background: rgba(129, 140, 248, 0.08);
            border-left: 3px solid var(--main-color);
            padding: 14px 18px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 20px 0;
        }
.legal-highlight p {
            margin-bottom: 0;
            color: var(--text-color);
        }
.legal-date {
            color: var(--accent-color);
            font-size: 0.85rem;
            font-weight: 500;
        }
.legal-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }
.legal-meta span {
            color: var(--text-color);
            opacity: 0.7;
            font-size: 0.9rem;
        }
.back-home-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--main-color);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 10px 20px;
            border: 1px solid var(--main-color);
            border-radius: var(--radius);
            margin-top: 10px;
        }
.back-home-btn:hover {
            background: var(--main-color);
            color: #fff;
            transform: translateX(-4px);
        }
.legal-card {
                padding: 24px 18px;
            }
.legal-card h2 {
                font-size: 1.2rem;
            }

/* --- 子页面追加 --- */
.privacy-section {
            background: var(--bg-color);
            color: var(--text-color);
            padding: 60px 0;
        }
.privacy-content {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 40px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
.privacy-content h2 {
            color: var(--main-color);
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--border-color);
        }
.privacy-content h3 {
            color: var(--accent-color);
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 25px;
            margin-bottom: 12px;
        }
.privacy-content p {
            line-height: 1.8;
            margin-bottom: 15px;
            color: var(--text-color);
        }
.privacy-content ul, .privacy-content ol {
            margin-bottom: 15px;
            padding-left: 20px;
        }
.privacy-content li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
.privacy-updated {
            background: rgba(129, 140, 248, 0.1);
            border-left: 4px solid var(--main-color);
            padding: 15px 20px;
            margin-bottom: 30px;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-size: 0.9rem;
            color: var(--text-color);
        }
.privacy-contact {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 30px;
            margin-top: 30px;
        }
.privacy-contact h3 {
            color: var(--main-color);
            font-size: 1.3rem;
            margin-bottom: 15px;
        }
.privacy-contact a {
            color: var(--accent-color);
            text-decoration: none;
        }
.privacy-contact a:hover {
            color: var(--main-color);
        }
.nav-link.active-privacy {
            color: var(--accent-color) !important;
            font-weight: 600;
            border-bottom: 2px solid var(--accent-color);
        }

/* --- 子页面追加 --- */
/* 覆盖 Bootstrap 组件默认白底黑字，保持深色主题 */
        .terms-content {
            background: var(--card-bg);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: var(--shadow);
        }
.terms-content h2, .terms-content h3 {
            color: var(--main-color);
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }
.terms-content p {
            color: var(--text-color);
            line-height: 1.8;
            margin-bottom: 1.2rem;
        }
.terms-content ul, .terms-content ol {
            color: var(--text-color);
            padding-left: 1.5rem;
        }
.terms-content li {
            margin-bottom: 0.5rem;
        }
.terms-content a {
            color: var(--accent-color);
            text-decoration: underline;
        }
.terms-content a:hover {
            color: var(--main-color);
        }
/* 覆盖 Bootstrap 的卡片、表格等组件（如果有用到） */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer {
            background: var(--card-bg);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.list-group-item {
            background: var(--card-bg);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.accordion-item, .accordion-button, .accordion-body {
            background: var(--card-bg);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.btn-light {
            background: var(--card-bg);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.form-control {
            background: rgba(0,0,0,0.2);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.form-control::placeholder {
            color: rgba(224, 231, 255, 0.5);
        }
.form-select {
            background: rgba(0,0,0,0.2);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.table {
            color: var(--text-color);
        }
.table-striped>tbody>tr:nth-of-type(odd)>* {
            background: rgba(129, 140, 248, 0.08);
            color: var(--text-color);
        }
.modal-content, .modal-header, .modal-body {
            background: var(--card-bg);
            color: var(--text-color);
            border-color: var(--border-color);
        }
.dropdown-menu {
            background: var(--card-bg);
            border-color: var(--border-color);
        }
.dropdown-item {
            color: var(--text-color);
        }
.dropdown-item:hover {
            background: var(--main-color);
            color: var(--bg-color);
        }
.navbar-nav .nav-link.active {
            color: var(--accent-color);
            font-weight: 600;
        }
.terms-content h2 i {
            margin-right: 0.5rem;
            color: var(--accent-color);
        }
.terms-content h3 i {
            margin-right: 0.4rem;
            color: var(--accent-color);
            font-size: 0.9em;
        }
.terms-updated {
            font-size: 0.9rem;
            color: rgba(224, 231, 255, 0.6);
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 1rem;
            margin-bottom: 1.5rem;
        }

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