:root {
        --primary: #eab308;
        --accent: #f59e0b;
        --bg: #18181b;
        --text: #fafafa;
        --card-bg: #1f1f23;
        --border-glow: rgba(234, 179, 8, 0.4);
    }

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

    body {
        background-color: var(--bg);
        color: var(--text);
        font-family: 'Inter', sans-serif;
        font-weight: 400;
        overflow-x: hidden;
    }

    /* 滚动进度条 */
    #scroll-progress {
        position: fixed;
        top: 0;
        left: 0;
        width: 0%;
        height: 4px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        z-index: 9999;
        box-shadow: 0 0 12px var(--border-glow);
        transition: width 0.1s ease-out;
    }

    /* 导航栏 */
    .navbar-custom {
        background: rgba(24, 24, 27, 0.92);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(234, 179, 8, 0.15);
        padding: 12px 0;
        position: sticky;
        top: 0;
        z-index: 1000;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    }

    .navbar-brand {
        font-weight: 900;
        font-size: 1.6rem;
        color: var(--primary) !important;
        text-shadow: 0 2px 12px rgba(234, 179, 8, 0.35);
        letter-spacing: 1px;
    }

    .navbar-brand i {
        color: var(--accent);
        margin-right: 4px;
    }

    .navbar-nav .nav-link {
        color: var(--text) !important;
        font-weight: 600;
        margin: 0 6px;
        padding: 8px 14px;
        border-radius: 8px;
        transition: all 0.3s ease;
        font-size: 0.95rem;
    }

    .navbar-nav .nav-link:hover {
        background: rgba(234, 179, 8, 0.1);
        color: var(--primary) !important;
        transform: translateY(-1px);
    }

    .navbar-toggler {
        border: 1px solid var(--primary);
        color: var(--primary);
    }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px var(--border-glow);
    }

    /* Hero 区域 */
    .hero-section {
        background: 
            radial-gradient(ellipse at 20% 30%, rgba(234, 179, 8, 0.12) 0%, transparent 50%),
            radial-gradient(ellipse at 80% 70%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
            var(--bg);
        padding: 100px 0 80px;
        position: relative;
        overflow: hidden;
    }

    .hero-section::after {
        content: '';
        position: absolute;
        bottom: -60px;
        left: 0;
        width: 100%;
        height: 120px;
        background: var(--bg);
        clip-path: polygon(0 40%, 100% 0, 100% 100%, 0 100%);
    }

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(234, 179, 8, 0.12);
        border: 1px solid rgba(234, 179, 8, 0.3);
        color: var(--primary);
        padding: 8px 20px;
        border-radius: 50px;
        font-weight: 600;
        font-size: 0.9rem;
        margin-bottom: 30px;
        letter-spacing: 0.5px;
    }

    .hero-badge i {
        color: var(--accent);
    }

    .hero-stats {
        display: flex;
        gap: 40px;
        margin-bottom: 30px;
        flex-wrap: wrap;
    }

    .hero-stat {
        text-align: center;
    }

    .hero-stat .number {
        font-family: 'Courier New', monospace;
        font-size: 3.8rem;
        font-weight: 900;
        color: var(--primary);
        line-height: 1;
        text-shadow: 0 4px 20px rgba(234, 179, 8, 0.3);
    }

    .hero-stat .label {
        font-size: 0.9rem;
        color: rgba(250, 250, 250, 0.7);
        margin-top: 8px;
        letter-spacing: 1px;
        font-weight: 500;
    }

    .hero-title {
        font-size: 4.2rem;
        font-weight: 900;
        line-height: 1.15;
        margin-bottom: 20px;
        background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        letter-spacing: -1px;
    }

    .hero-subtitle {
        font-size: 1.3rem;
        color: rgba(250, 250, 250, 0.8);
        max-width: 600px;
        margin-bottom: 35px;
        line-height: 1.7;
        font-weight: 300;
    }

    .btn-hero {
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: #18181b;
        font-weight: 800;
        padding: 16px 40px;
        border-radius: 50px;
        font-size: 1.1rem;
        border: none;
        box-shadow: 0 8px 30px rgba(234, 179, 8, 0.35);
        transition: all 0.3s ease;
        text-decoration: none;
        display: inline-block;
    }

    .btn-hero:hover {
        transform: translateY(-3px) scale(1.03);
        box-shadow: 0 12px 40px rgba(234, 179, 8, 0.5);
        color: #18181b;
    }

    .btn-hero i {
        margin-right: 8px;
    }

    /* 区块通用 */
    .section-padding {
        padding: 100px 0;
        position: relative;
    }

    .section-title {
        font-size: 2.6rem;
        font-weight: 900;
        margin-bottom: 15px;
        color: var(--text);
        letter-spacing: -0.5px;
    }

    .section-subtitle {
        color: rgba(250, 250, 250, 0.6);
        font-size: 1.1rem;
        margin-bottom: 50px;
        font-weight: 300;
    }

    .section-title span {
        color: var(--primary);
    }

    /* 斜切分割 */
    .divider-slant {
        position: relative;
    }

    .divider-slant::before {
        content: '';
        position: absolute;
        top: -40px;
        left: 0;
        width: 100%;
        height: 80px;
        background: var(--bg);
        clip-path: polygon(0 50%, 100% 0, 100% 50%, 0 100%);
        z-index: 1;
    }

    /* 统计区 */
    .stats-section {
        background: linear-gradient(135deg, #1e1e21, #212124);
        padding: 60px 0;
        border-top: 1px solid rgba(234, 179, 8, 0.1);
        border-bottom: 1px solid rgba(234, 179, 8, 0.1);
    }

    .stat-card {
        text-align: center;
        padding: 30px 20px;
        border-radius: 16px;
        background: rgba(24, 24, 27, 0.6);
        border: 1px solid rgba(234, 179, 8, 0.1);
        transition: all 0.4s ease;
    }

    .stat-card:hover {
        border-color: var(--primary);
        box-shadow: 0 8px 30px rgba(234, 179, 8, 0.1);
        transform: translateY(-5px);
    }

    .stat-card .number {
        font-family: 'Courier New', monospace;
        font-size: 2.8rem;
        font-weight: 900;
        color: var(--primary);
    }

    .stat-card .label {
        font-size: 1rem;
        color: rgba(250, 250, 250, 0.7);
        margin-top: 8px;
    }

    /* 说明区 - 编号清单 */
    .steps-section {
        background: var(--bg);
    }

    .step-item {
        display: flex;
        gap: 25px;
        padding: 35px 30px;
        background: var(--card-bg);
        border-radius: 16px;
        margin-bottom: 20px;
        border-left: 4px solid var(--primary);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
        transition: all 0.3s ease;
    }

    .step-item:hover {
        box-shadow: 0 12px 35px rgba(234, 179, 8, 0.1);
        border-left-color: var(--accent);
        transform: translateX(8px);
    }

    .step-number {
        font-family: 'Courier New', monospace;
        font-size: 2rem;
        font-weight: 900;
        color: var(--primary);
        background: rgba(234, 179, 8, 0.1);
        width: 60px;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        flex-shrink: 0;
        border: 1px solid rgba(234, 179, 8, 0.2);
    }

    .step-content h4 {
        font-weight: 800;
        font-size: 1.3rem;
        margin-bottom: 8px;
        color: var(--text);
    }

    .step-content p {
        color: rgba(250, 250, 250, 0.7);
        margin: 0;
        line-height: 1.6;
        font-weight: 300;
    }

    /* 特色对比表格 */
    .compare-section {
        background: linear-gradient(180deg, #1e1e21, var(--bg));
        border-top: 1px solid rgba(234, 179, 8, 0.1);
    }

    .compare-table {
        background: var(--card-bg);
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5);
        border: 1px solid rgba(234, 179, 8, 0.15);
    }

    .compare-row {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        border-bottom: 1px solid rgba(234, 179, 8, 0.1);
        transition: background 0.3s ease;
    }

    .compare-row:last-child {
        border-bottom: none;
    }

    .compare-row:hover {
        background: rgba(234, 179, 8, 0.05);
    }

    .compare-row.header {
        background: rgba(234, 179, 8, 0.08);
        font-weight: 800;
    }

    .compare-cell {
        padding: 20px 25px;
        font-size: 1rem;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .compare-cell:first-child {
        font-weight: 700;
        color: var(--primary);
    }

    .compare-cell i {
        color: var(--primary);
    }

    .compare-row.header .compare-cell {
        font-weight: 900;
        color: var(--primary);
        font-size: 1.1rem;
        justify-content: center;
    }

    .fa-check {
        color: var(--primary) !important;
    }

    .fa-xmark {
        color: rgba(250, 250, 250, 0.4) !important;
    }

    /* FAQ */
    .faq-section {
        background: var(--bg);
    }

    .accordion-item {
        background: var(--card-bg);
        border: 1px solid rgba(234, 179, 8, 0.1);
        border-radius: 12px !important;
        margin-bottom: 15px;
        overflow: hidden;
    }

    .accordion-button {
        background: var(--card-bg);
        color: var(--text);
        font-weight: 600;
        font-size: 1.1rem;
        padding: 22px 25px;
        border: none;
    }

    .accordion-button:not(.collapsed) {
        background: rgba(234, 179, 8, 0.08);
        color: var(--primary);
        box-shadow: none;
    }

    .accordion-button:focus {
        box-shadow: 0 0 0 3px var(--border-glow);
    }

    .accordion-body {
        background: var(--card-bg);
        color: rgba(250, 250, 250, 0.75);
        padding: 20px 25px;
        line-height: 1.7;
        font-weight: 300;
    }

    /* CTA */
    .cta-section {
        background: linear-gradient(135deg, #1e1e21 0%, #232327 100%);
        padding: 80px 0;
        text-align: center;
        border-top: 1px solid rgba(234, 179, 8, 0.1);
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: -40px;
        left: 0;
        width: 100%;
        height: 80px;
        background: var(--bg);
        clip-path: polygon(0 0, 100% 50%, 100% 0, 0 50%);
    }

    .cta-title {
        font-size: 2.8rem;
        font-weight: 900;
        margin-bottom: 20px;
    }

    .cta-subtitle {
        font-size: 1.2rem;
        color: rgba(250, 250, 250, 0.7);
        max-width: 600px;
        margin: 0 auto 40px;
        font-weight: 300;
    }

    /* 卡片网格 */
    .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
        margin-top: 50px;
    }

    .feature-card {
        background: var(--card-bg);
        border-radius: 20px;
        padding: 40px 30px;
        border: 1px solid rgba(234, 179, 8, 0.12);
        box-shadow: 0 10px 35px rgba(0, 0, 0, 0.4);
        transition: all 0.4s ease;
        position: relative;
        overflow: hidden;
    }

    .feature-card:hover {
        transform: scale(1.02) translateY(-5px);
        border-color: var(--primary);
        box-shadow: 0 15px 45px rgba(234, 179, 8, 0.15);
    }

    .feature-card .icon {
        width: 60px;
        height: 60px;
        background: rgba(234, 179, 8, 0.1);
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        color: var(--primary);
        margin-bottom: 20px;
        border: 1px solid rgba(234, 179, 8, 0.2);
    }

    .feature-card h5 {
        font-weight: 800;
        font-size: 1.3rem;
        margin-bottom: 12px;
    }

    .feature-card p {
        color: rgba(250, 250, 250, 0.65);
        line-height: 1.6;
        font-weight: 300;
    }

    /* 图片懒加载占位 */
    .lazy-img {
        background: linear-gradient(135deg, #1e1e21, #252529);
        min-height: 150px;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(234, 179, 8, 0.3);
        font-size: 2rem;
        overflow: hidden;
    }

    .lazy-img img {
        width: 100%;
        height: auto;
        opacity: 0;
        transition: opacity 0.6s ease;
    }

    .lazy-img img.loaded {
        opacity: 1;
    }

    /* 友情链接 */
    .links-section {
        background: #1a1a1d;
        padding: 50px 0;
        border-top: 1px solid rgba(234, 179, 8, 0.08);
    }

    .links-title {
        font-weight: 800;
        font-size: 1.2rem;
        color: var(--primary);
        margin-bottom: 20px;
        text-align: center;
    }

    .links-list {
        text-align: center;
        color: rgba(250, 250, 250, 0.5);
        font-weight: 300;
    }

    /* 页脚 */
    footer {
        background: #131315;
        padding: 50px 0 30px;
        border-top: 1px solid rgba(234, 179, 8, 0.1);
    }

    .footer-links a {
        color: rgba(250, 250, 250, 0.6);
        text-decoration: none;
        margin: 0 15px;
        transition: all 0.3s ease;
        font-weight: 500;
    }

    .footer-links a:hover {
        color: var(--primary);
    }

    .footer-copyright {
        color: rgba(250, 250, 250, 0.4);
        font-size: 0.9rem;
        margin-top: 20px;
    }

    .footer-brand {
        font-size: 1.5rem;
        font-weight: 900;
        color: var(--primary);
        margin-bottom: 15px;
        letter-spacing: 1px;
    }

    /* 响应式 */
    @media (max-width: 992px) {
        .hero-title {
            font-size: 3rem;
        }

        .hero-stats {
            gap: 25px;
        }

        .hero-stat .number {
            font-size: 2.8rem;
        }
    }

    @media (max-width: 768px) {
        .hero-section {
            padding: 60px 0 60px;
        }

        .hero-title {
            font-size: 2.4rem;
        }

        .hero-subtitle {
            font-size: 1.1rem;
        }

        .section-title {
            font-size: 2rem;
        }

        .compare-row {
            grid-template-columns: 1fr;
        }

        .compare-row.header {
            display: none;
        }

        .compare-cell {
            padding: 15px 20px;
        }

        .compare-cell:first-child {
            background: rgba(234, 179, 8, 0.05);
        }
    }

    @media (max-width: 576px) {
        .hero-stats {
            flex-direction: column;
            gap: 20px;
        }

        .hero-stat .number {
            font-size: 2.4rem;
        }

        .step-item {
            flex-direction: column;
            padding: 25px 20px;
        }
    }

/* --- 子页面追加 --- */
/* 页面特定微调，保持与全站风格一致 */
        .about-hero {
            background: linear-gradient(135deg, var(--bg) 0%, #202024 100%);
            border-bottom: 1px solid rgba(234, 179, 8, 0.2);
            padding: 4rem 0 3rem;
        }
.about-hero .page-title {
            color: var(--primary);
            font-weight: 800;
            font-size: 2.6rem;
            letter-spacing: -0.02em;
        }
.about-hero .page-subtitle {
            color: var(--text);
            opacity: 0.85;
            max-width: 700px;
        }
.content-section {
            padding: 3.5rem 0;
        }
.content-section .section-title-custom {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.8rem;
            border-left: 4px solid var(--primary);
            padding-left: 1rem;
            margin-bottom: 1.8rem;
        }
.content-section .section-text {
            color: var(--text);
            line-height: 1.8;
            font-size: 1.05rem;
        }
.content-section .highlight {
            color: var(--primary);
            font-weight: 600;
        }
.feature-box {
            background: var(--card-bg);
            border: 1px solid rgba(234, 179, 8, 0.15);
            border-radius: 12px;
            padding: 1.8rem;
            height: 100%;
            transition: border-color 0.3s;
        }
.feature-box:hover {
            border-color: var(--border-glow);
        }
.feature-box i {
            color: var(--primary);
            font-size: 2rem;
            margin-bottom: 1rem;
        }
.feature-box h3 {
            color: var(--text);
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }
.feature-box p {
            color: var(--text);
            opacity: 0.85;
            font-size: 0.95rem;
        }
.stats-band {
            background: rgba(234, 179, 8, 0.05);
            border-top: 1px solid rgba(234, 179, 8, 0.2);
            border-bottom: 1px solid rgba(234, 179, 8, 0.2);
            padding: 2.5rem 0;
        }
.stat-item {
            text-align: center;
        }
.stat-item .stat-number {
            color: var(--primary);
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1;
        }
.stat-item .stat-label {
            color: var(--text);
            opacity: 0.7;
            margin-top: 0.5rem;
        }
.nav-link.active {
            color: var(--primary) !important;
        }

/* --- 子页面追加 --- */
/* 确保Bootstrap组件不会破坏深色风格 */
        .card, .card-body, .card-title, .card-text, .card-header, .card-footer {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border-glow);
        }
.form-control, .form-select, .form-label, .input-group-text {
            background: rgba(0,0,0,.35);
            color: var(--text);
            border-color: var(--border-glow);
        }
.form-control::placeholder {
            color: rgba(255,255,255,.45);
        }
.table, .list-group-item, .accordion-item, .accordion-button, .accordion-body,
        .modal-content, .modal-header, .modal-body, .dropdown-menu, .dropdown-item {
            background: var(--card-bg);
            color: var(--text);
            border-color: var(--border-glow);
        }
.nav-link, .navbar, .navbar-brand, .btn-light, .btn-outline-* {
            color: var(--text) !important;
        }
/* 小标题强调 */
        .disclaimer-section h2, .disclaimer-section h3 {
            color: var(--primary);
            font-weight: 700;
            border-left: 4px solid var(--primary);
            padding-left: 1rem;
            margin: 2.5rem 0 1.2rem 0;
        }
.disclaimer-section p, .disclaimer-section li {
            color: rgba(250,250,250,.9);
            line-height: 1.8;
        }
.disclaimer-section ul, .disclaimer-section ol {
            padding-left: 1.5rem;
        }
.disclaimer-section li {
            margin-bottom: .5rem;
        }
.strong-primary {
            color: var(--primary);
            font-weight: 600;
        }
.badge-banana {
            background: rgba(234,179,8,.15);
            color: var(--primary);
            border: 1px solid var(--border-glow);
            padding: .3rem .8rem;
            border-radius: 2rem;
            font-size: .85rem;
            font-weight: 500;
        }

/* --- 子页面追加 --- */
/* 保证隐私页排版与首页一致，并适配Bootstrap组件配色 */
        .privacy-content h2, .privacy-content h3 {
            color: var(--primary);
            font-weight: 700;
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            border-left: 4px solid var(--accent);
            padding-left: 1rem;
        }
.privacy-content p, .privacy-content li {
            color: var(--text);
            opacity: 0.92;
            line-height: 1.8;
        }
.privacy-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
.privacy-content a:hover {
            color: var(--primary);
        }
.privacy-card {
            background: var(--card-bg);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: 16px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 10px 30px -10px rgba(0,0,0,0.4);
        }
.privacy-card:hover {
            border-color: var(--border-glow);
        }
.privacy-list-icon {
            color: var(--primary);
            margin-right: 10px;
            width: 24px;
            text-align: center;
        }
.table-privacy {
            background: transparent;
            color: var(--text);
            border-color: rgba(255,255,255,0.1);
        }
.table-privacy th {
            color: var(--primary);
            border-color: rgba(255,255,255,0.1);
        }
.table-privacy td {
            border-color: rgba(255,255,255,0.08);
        }
/* 覆盖 Bootstrap 组件可能的默认白底 */
        .card, .card-body, .card-header, .card-footer, .accordion-item, .accordion-button, .list-group-item {
            background-color: var(--card-bg) !important;
            color: var(--text) !important;
            border-color: rgba(255,255,255,0.1) !important;
        }
.form-control, .form-select {
            background-color: rgba(0,0,0,0.35) !important;
            color: var(--text) !important;
            border-color: var(--border-color, rgba(255,255,255,0.2)) !important;
        }
/* 导航高亮当前页 */
        .navbar-nav .nav-link.active {
            color: var(--primary) !important;
            font-weight: 600;
        }

/* --- 子页面追加 --- */
/* 保证所有bootstrap组件继承本站暗色背景与文字色 */
        .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: var(--card-bg) !important;
            color: var(--text) !important;
            border-color: var(--border-glow) !important;
        }
.form-control::placeholder, .form-select::placeholder {
            color: rgba(250, 250, 250, 0.5) !important;
        }
/* 自定义卡片阴影与边框光晕 */
        .contact-card {
            background: var(--card-bg);
            border: 1px solid var(--border-glow);
            border-radius: 20px;
            padding: 2rem 1.8rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.3);
            transition: transform .25s ease;
        }
.contact-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.4);
        }
.contact-icon-circle {
            width: 55px;
            height: 55px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #18181b;
            font-size: 1.6rem;
            margin-bottom: 1rem;
        }
.form-control-custom {
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid var(--border-glow);
            color: var(--text);
            border-radius: 12px;
            padding: 0.8rem 1.2rem;
            transition: border .2s, box-shadow .2s;
        }
.form-control-custom:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.25);
            background: rgba(0, 0, 0, 0.45);
            color: #fff;
        }
.btn-send {
            background: var(--primary);
            color: #18181b;
            font-weight: 700;
            border: none;
            padding: 0.75rem 2.2rem;
            border-radius: 40px;
            letter-spacing: 0.3px;
            transition: all .2s;
        }
.btn-send:hover {
            background: var(--accent);
            color: #18181b;
            transform: scale(1.02);
        }
.list-info i {
            color: var(--primary);
            width: 28px;
        }
a.contact-link {
            color: var(--text);
            text-decoration: none;
            border-bottom: 1px dashed var(--border-glow);
            transition: color .2s, border .2s;
        }
a.contact-link:hover {
            color: var(--primary);
            border-bottom-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; }