:root {
    --main: #eab308;
    --accent: #f59e0b;
    --bg: #18181b;
    --text: #fafafa;
    --border-color: rgba(234, 179, 8, 0.25);
  }

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

  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
  }

  /* 标题字体 —— 思源宋体类衬线 */
  h1, h2, h3, h4, h5, h6, .serif-font {
    font-family: 'Source Han Serif SC', 'Songti SC', 'Noto Serif SC', Georgia, serif;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text);
  }

  /* 正文字体 —— 黑体类 */
  p, li, a, td, th, .sans-font, .navbar, .btn, input {
    font-family: 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
  }

  /* 渐变光晕背景 */
  .glow-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
  }

  .glow-bg::before {
    content: '';
    position: absolute;
    top: -10%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(234, 179, 8, 0.12) 0%, transparent 70%);
    filter: blur(80px);
    animation: glowDrift 12s ease-in-out infinite alternate;
  }

  .glow-bg::after {
    content: '';
    position: absolute;
    bottom: -10%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
    filter: blur(100px);
    animation: glowDrift 18s ease-in-out infinite alternate-reverse;
  }

  @keyframes glowDrift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, -30px) scale(1.1); }
  }

  /* 导航栏 */
  .navbar-custom {
    background: rgba(24, 24, 27, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.8rem 0;
    z-index: 1000;
  }

  .navbar-custom .navbar-brand {
    font-family: 'Source Han Serif SC', serif;
    font-weight: 900;
    font-size: 1.6rem;
    color: var(--main);
    letter-spacing: 0.05em;
    margin-left: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .navbar-custom .navbar-brand i {
    font-size: 1.4rem;
    color: var(--accent);
  }

  .navbar-custom .nav-link {
    color: var(--text);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
    border-bottom: 2px solid transparent;
  }

  .navbar-custom .nav-link:hover {
    color: var(--main);
    border-bottom-color: var(--main);
  }

  .navbar-toggler {
    border-color: var(--border-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(234, 179, 8, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }

  /* 主按钮 */
  .btn-gold {
    background-color: var(--main);
    color: var(--bg);
    border: 1px solid var(--main);
    border-radius: 0;
    font-weight: 600;
    padding: 0.6rem 1.8rem;
    transition: all 0.3s ease;
  }

  .btn-gold:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--bg);
    transform: translateY(-2px);
  }

  .btn-outline-gold {
    background: transparent;
    color: var(--main);
    border: 1px solid var(--main);
    border-radius: 0;
    font-weight: 500;
    padding: 0.6rem 1.8rem;
    transition: all 0.3s ease;
  }

  .btn-outline-gold:hover {
    background: var(--main);
    color: var(--bg);
  }

  /* Hero 区 */
  .hero-section {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 0 4rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
  }

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

  .hero-title {
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1rem;
  }

  .hero-title span {
    color: var(--main);
  }

  .hero-subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 1.2rem auto 2rem;
    color: rgba(250, 250, 250, 0.8);
  }

  /* 关键词标签云 */
  .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    max-width: 700px;
    margin: 2.5rem auto;
  }

  .tag-cloud .tag {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid var(--border-color);
    color: var(--text);
    font-size: 0.9rem;
    border-radius: 50px;
    opacity: 0;
    animation: tagFadeIn 0.6s ease forwards;
    transition: all 0.3s ease;
    background: rgba(234, 179, 8, 0.03);
  }

  .tag-cloud .tag:hover {
    background: var(--main);
    color: var(--bg);
    border-color: var(--main);
    transform: scale(1.05);
  }

  @keyframes tagFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* 特色卡片区 */
  .features-section {
    padding: 5rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .section-label {
    color: var(--main);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
    font-weight: 600;
  }

  .section-title {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 3rem;
  }

  .feature-card {
    border: 1px solid var(--border-color);
    border-radius: 0;
    background: transparent;
    padding: 2rem 1.5rem;
    height: 100%;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
  }

  .feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--main), transparent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
  }

  .feature-card:hover {
    border-color: var(--main);
    transform: translateY(-5px);
  }

  .feature-card:hover::after {
    transform: scaleX(1);
  }

  .feature-icon {
    font-size: 2.2rem;
    color: var(--main);
    margin-bottom: 1.2rem;
  }

  .feature-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
  }

  .feature-card p {
    color: rgba(250, 250, 250, 0.75);
    font-size: 0.95rem;
    margin: 0;
  }

  /* 长文介绍 —— 编号清单 */
  .intro-section {
    padding: 5rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .intro-list {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
  }

  .intro-list li {
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    padding: 1.2rem 0;
    border-bottom: 1px solid rgba(234, 179, 8, 0.1);
    opacity: 0;
    animation: fadeUp 0.6s ease forwards;
  }

  .intro-list li:last-child {
    border-bottom: none;
  }

  .intro-num {
    font-family: 'Source Han Serif SC', serif;
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--main);
    line-height: 1;
    min-width: 50px;
  }

  .intro-text h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
  }

  .intro-text p {
    color: rgba(250, 250, 250, 0.75);
    font-size: 0.95rem;
  }

  /* 对比表格 */
  .table-section {
    padding: 5rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .compare-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    font-size: 0.95rem;
  }

  .compare-table th, .compare-table td {
    padding: 1.2rem 1rem;
    border: 1px solid var(--border-color);
    text-align: center;
  }

  .compare-table th {
    background: rgba(234, 179, 8, 0.05);
    color: var(--main);
    font-weight: 700;
    font-size: 1rem;
  }

  .compare-table td {
    background: transparent;
    color: var(--text);
  }

  .compare-table .highlight-col {
    background: rgba(234, 179, 8, 0.08);
    border: 1px solid var(--main);
  }

  .compare-table .check-icon {
    color: var(--main);
  }

  .compare-table .x-icon {
    color: rgba(250, 250, 250, 0.3);
  }

  /* FAQ */
  .faq-section {
    padding: 5rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .accordion-item {
    background: transparent;
    border: 1px solid var(--border-color);
    margin-bottom: 0.8rem;
    border-radius: 0;
  }

  .accordion-button {
    background: transparent;
    color: var(--text);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 1.2rem 1.5rem;
    box-shadow: none;
  }

  .accordion-button:not(.collapsed) {
    color: var(--main);
    background: rgba(234, 179, 8, 0.03);
  }

  .accordion-button::after {
    filter: invert(0.8) sepia(1) saturate(5) hue-rotate(20deg);
  }

  .accordion-body {
    background: transparent;
    color: rgba(250, 250, 250, 0.8);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
  }

  /* CTA 区 */
  .cta-section {
    padding: 6rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
  }

  .cta-section h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
  }

  /* 友情链接 */
  .friend-links {
    padding: 4rem 0;
    border-bottom: 1px solid var(--border-color);
  }

  .friend-links .section-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
  }

  /* 页脚 */
  .footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
  }

  .footer a {
    color: rgba(250, 250, 250, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
  }

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

  /* 滚动渐显 */
  .fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

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

  /* 图片懒加载占位 */
  .lazy-img {
    background: linear-gradient(110deg, rgba(234,179,8,0.05) 25%, rgba(234,179,8,0.1) 37%, rgba(234,179,8,0.05) 63%);
    background-size: 400% 100%;
    animation: shimmer 1.6s ease infinite;
  }

  @keyframes shimmer {
    0% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
  }

  /* 海报 hover 播放按钮 */
  .poster-wrapper {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: border-color 0.4s ease;
  }

  .poster-wrapper img {
    width: 100%;
    display: block;
    transition: transform 0.4s ease;
  }

  .poster-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: opacity 0.4s ease;
  }

  .poster-overlay i {
    font-size: 3rem;
    color: var(--main);
    transform: scale(0.6);
    transition: transform 0.4s ease;
    filter: drop-shadow(0 0 20px rgba(234,179,8,0.5));
  }

  .poster-wrapper:hover .poster-overlay {
    opacity: 1;
  }

  .poster-wrapper:hover .poster-overlay i {
    transform: scale(1);
  }

  /* 响应式 */
  @media (max-width: 768px) {
    .hero-title {
      font-size: 2.4rem;
    }

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

    .compare-table {
      font-size: 0.8rem;
    }

    .compare-table th, .compare-table td {
      padding: 0.8rem 0.5rem;
    }
  }

  /* 卡片错落滚动 */
  .stagger-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .stagger-card.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* 自定义滚动条 */
  ::-webkit-scrollbar {
    width: 8px;
  }

  ::-webkit-scrollbar-track {
    background: var(--bg);
  }

  ::-webkit-scrollbar-thumb {
    background: var(--main);
    opacity: 0.5;
  }

/* --- 子页面追加 --- */
/* 少量本页专属补充样式，已合并到站点风格 */
    .about-hero { padding: 5rem 0 3rem; }
.about-hero .hero-title { font-weight: 800; letter-spacing: -0.02em; }
.about-block { background: rgba(24,24,27,0.6); border: 1px solid var(--border-color); border-radius: 1rem; padding: 1.75rem 1.5rem; height: 100%; transition: transform 0.2s ease, border-color 0.2s; }
.about-block:hover { transform: translateY(-3px); border-color: var(--main); }
.about-block i { color: var(--main); font-size: 1.6rem; margin-bottom: 0.75rem; }
.about-block h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--text); }
.about-block p { font-size: 0.9rem; color: rgba(250,250,250,0.7); margin: 0; }
.num-list { list-style: none; padding-left: 0; display: flex; flex-wrap: wrap; gap: 1rem 2rem; margin-top: 1.5rem; }
.num-list li { display: flex; align-items: baseline; gap: 0.5rem; color: var(--text); font-size: 0.9rem; }
.num-list strong { color: var(--main); font-size: 1.6rem; font-weight: 800; margin-right: 0.2rem; }
.section-margin { margin-top: 3.5rem; }
.badge-soft { background: rgba(234,179,8,0.12); color: var(--main); border: 1px solid rgba(234,179,8,0.3); padding: 0.25rem 0.8rem; border-radius: 20px; font-size: 0.75rem; font-weight: 500; }
/* 确保任何Bootstrap类都不干扰配色 */
    .container, .row, .col-*, .navbar, .navbar-collapse { background: transparent; }

/* --- 子页面追加 --- */
/* 本页专属的少量补充样式 */
        .terms-hero { padding: 120px 0 60px; text-align: center; position: relative; overflow: hidden; }
.terms-hero h1 { font-size: 2.8rem; font-weight: 800; color: var(--text); margin-bottom: 16px; }
.terms-hero h1 span { color: var(--main); }
.terms-hero p { color: rgba(250,250,250,.7); font-size: 1.1rem; max-width: 700px; margin: 0 auto; }
.terms-section { padding: 40px 0; border-bottom: 1px solid rgba(234,179,8,.08); }
.terms-section:last-child { border-bottom: none; }
.terms-section h2 { font-size: 1.6rem; font-weight: 700; color: var(--main); margin-bottom: 20px; position: relative; padding-left: 18px; }
.terms-section h2::before { content: ''; position: absolute; left: 0; top: 6px; width: 4px; height: 24px; background: var(--main); border-radius: 2px; }
.terms-section h3 { font-size: 1.2rem; font-weight: 600; color: var(--text); margin: 20px 0 10px; }
.terms-section p { color: rgba(250,250,250,.75); line-height: 1.8; margin-bottom: 12px; }
.terms-section ul { color: rgba(250,250,250,.75); line-height: 1.8; padding-left: 20px; }
.terms-section ul li { margin-bottom: 8px; }
.terms-section strong { color: var(--accent); }
.terms-date { text-align: center; padding: 30px 0 60px; color: rgba(250,250,250,.5); font-size: .95rem; }
.terms-icon { font-size: 3rem; color: var(--main); margin-bottom: 20px; display: block; }
.back-home { text-align: center; padding: 20px 0 80px; }

/* --- 子页面追加 --- */
/* 页面专属补充样式 */
        .privacy-section {
            padding: 80px 0;
        }
.privacy-section .section-title {
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
.privacy-section .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--main);
            border-radius: 2px;
        }
.privacy-content {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            margin-bottom: 30px;
            transition: all 0.3s ease;
        }
.privacy-content:hover {
            border-color: var(--main);
            box-shadow: 0 8px 30px rgba(234, 179, 8, 0.08);
        }
.privacy-content p {
            color: rgba(250, 250, 250, 0.8);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.privacy-content ul {
            color: rgba(250, 250, 250, 0.8);
            line-height: 2;
            padding-left: 20px;
        }
.privacy-content ul li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 18px;
        }
.privacy-content ul li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--main);
            font-size: 0.9rem;
        }
.privacy-highlight {
            background: rgba(234, 179, 8, 0.08);
            border-left: 3px solid var(--main);
            padding: 15px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            font-size: 0.92rem;
            color: rgba(250, 250, 250, 0.9);
        }
.privacy-highlight strong {
            color: var(--main);
        }
.last-updated {
            color: rgba(250, 250, 250, 0.5);
            font-size: 0.85rem;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
.privacy-section {
                padding: 50px 0;
            }
.privacy-content {
                padding: 20px;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#fafafa !important; border-color:rgba(255,255,255,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#fafafa !important; }
.accordion-header { background:transparent !important; }