:root {
    --primary: #22d3ee;
    --accent: #fb923c;
    --bg: #0f172a;
    --text: #e2e8f0;
    --text-muted: rgba(226, 232, 240, 0.6);
    --border-color: rgba(226, 232, 240, 0.12);
    --card-bg: rgba(255, 255, 255, 0.02);
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-weight: 400;
    line-height: 1.75;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
  }
  
  /* 纯描边分割风格 */
  .border-section {
    border-bottom: 1px solid var(--border-color);
  }
  
  /* 导航 */
  .navbar-custom {
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    z-index: 1000;
  }
  
  .navbar-brand {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text) !important;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .navbar-brand i {
    color: var(--primary);
    font-size: 1.8rem;
  }
  
  .navbar-custom .nav-link {
    color: var(--text) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 6px;
    transition: color 0.2s;
    font-size: 0.95rem;
  }
  
  .navbar-custom .nav-link:hover {
    color: var(--primary) !important;
  }
  
  .navbar-toggler {
    border-color: var(--border-color) !important;
  }
  
  .navbar-toggler-icon {
    filter: invert(1);
  }
  
  /* Hero 区域 */
  .hero {
    padding: 8rem 0 6rem;
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(180deg, rgba(15,23,42,0.3) 0%, var(--bg) 100%);
  }
  
  .hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: url('{随机图片}');
    background-size: cover;
    background-position: center 30%;
    opacity: 0.08;
    z-index: -1;
    transform: translateY(0);
    will-change: transform;
  }
  
  .hero-title {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    color: var(--text);
  }
  
  .hero-title .highlight {
    color: var(--primary);
  }
  
  .hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 580px;
    margin-bottom: 2.5rem;
    font-weight: 300;
  }
  
  .btn-cy {
    background: var(--primary);
    color: var(--bg);
    font-weight: 600;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-size: 1rem;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
  }
  
  .btn-cy:hover {
    background: #67e8f9;
    color: var(--bg);
    transform: translateY(-2px);
  }
  
  .btn-outline-cy {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border-color);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-size: 1rem;
    text-decoration: none;
    display: inline-block;
    margin-left: 0.8rem;
    transition: all 0.2s;
  }
  
  .btn-outline-cy:hover {
    border-color: var(--accent);
    color: var(--accent);
  }
  
  /* 打字机光标 */
  .typewriter-cursor {
    display: inline-block;
    width: 4px;
    height: 1em;
    background-color: var(--accent);
    margin-left: 4px;
    vertical-align: text-bottom;
    animation: blink 0.8s infinite;
  }
  
  @keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
  }
  
  /* Bento 网格 */
  .bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
  
  .bento-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: border-color 0.3s;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease, border-color 0.3s;
  }
  
  .bento-item.visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  .bento-item:hover {
    border-color: var(--primary);
  }
  
  .bento-item.col-span-2 {
    grid-column: span 2;
  }
  
  .bento-item.col-span-3 {
    grid-column: span 3;
  }
  
  .bento-item.row-span-2 {
    grid-row: span 2;
  }
  
  .bento-icon {
    font-size: 2.2rem;
    color: var(--accent);
    margin-bottom: 1.2rem;
  }
  
  .bento-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    letter-spacing: -0.01em;
  }
  
  .bento-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 300;
  }
  
  /* 区块标题 */
  .section-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 1rem;
  }
  
  .section-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
  }
  
  .section-subtitle {
    color: var(--text-muted);
    font-weight: 300;
    max-width: 600px;
  }
  
  /* 对比表格 */
  .comparison-table {
    width: 100%;
    border-collapse: collapse;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: 1.2rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-weight: 400;
  }
  
  .comparison-table th {
    font-weight: 700;
    color: var(--text);
    font-size: 1rem;
  }
  
  .comparison-table td {
    color: var(--text-muted);
    font-size: 0.95rem;
  }
  
  .comparison-table .highlight-col {
    color: var(--primary);
    font-weight: 600;
  }
  
  .comparison-table .check {
    color: var(--primary);
    font-size: 1.1rem;
  }
  
  .comparison-table .cross {
    color: var(--accent);
    font-size: 1.1rem;
  }
  
  .table-wrap {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: var(--card-bg);
  }
  
  /* 海报 hover 效果 */
  .poster-card {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: #1e293b;
    aspect-ratio: 3/4;
    transition: border-color 0.3s;
    cursor: pointer;
  }
  
  .poster-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
  }
  
  .poster-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
  }
  
  .poster-card:hover .poster-overlay {
    opacity: 1;
  }
  
  .poster-play-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg);
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(251, 146, 60, 0.4);
  }
  
  .poster-title {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 1rem;
    background: linear-gradient(transparent, rgba(15,23,42,0.9));
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
  }
  
  /* FAQ 手风琴 */
  .faq-accordion .accordion-item {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 1rem;
    overflow: hidden;
  }
  
  .faq-accordion .accordion-button {
    background: transparent;
    color: var(--text);
    font-weight: 600;
    padding: 1.2rem 1.5rem;
    font-size: 1rem;
    box-shadow: none;
    border: none;
  }
  
  .faq-accordion .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: rgba(34, 211, 238, 0.05);
  }
  
  .faq-accordion .accordion-button:focus {
    box-shadow: none;
    border: none;
  }
  
  .faq-accordion .accordion-body {
    padding: 1.2rem 1.5rem;
    color: var(--text-muted);
    font-weight: 300;
    border-top: 1px solid var(--border-color);
  }
  
  .faq-accordion .accordion-button::after {
    filter: invert(1);
  }
  
  /* CTA 区域 */
  .cta-section {
    padding: 5rem 0;
    text-align: center;
  }
  
  .cta-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
  }
  
  .cta-subtitle {
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-weight: 300;
  }
  
  /* 友情链接 */
  .friend-links {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 2rem;
    margin-top: 2rem;
  }
  
  .friend-links h5 {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
  }
  
  .friend-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-right: 1.8rem;
    font-size: 0.9rem;
    font-weight: 300;
    transition: color 0.2s;
  }
  
  .friend-links a:hover {
    color: var(--primary);
  }
  
  /* 页脚 */
  footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 300;
  }
  
  footer a {
    color: var(--text-muted);
    text-decoration: none;
  }
  
  footer a:hover {
    color: var(--primary);
  }
  
  /* 滚动渐显延迟 */
  .delay-1 { transition-delay: 0.1s; }
  .delay-2 { transition-delay: 0.2s; }
  .delay-3 { transition-delay: 0.3s; }
  .delay-4 { transition-delay: 0.4s; }
  .delay-5 { transition-delay: 0.5s; }
  .delay-6 { transition-delay: 0.6s; }
  
  /* 响应式 */
  @media (max-width: 992px) {
    .bento-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .hero-title {
      font-size: 2.5rem;
    }
  }
  
  @media (max-width: 576px) {
    .bento-grid {
      grid-template-columns: 1fr;
    }
    .bento-item.col-span-2,
    .bento-item.col-span-3 {
      grid-column: span 1;
    }
    .hero {
      padding-top: 6rem;
    }
    .hero-title {
      font-size: 2rem;
    }
    .section-title {
      font-size: 1.8rem;
    }
    .comparison-table th,
    .comparison-table td {
      padding: 0.8rem;
      font-size: 0.8rem;
    }
  }

/* --- 子页面追加 --- */
/* 本页专属的小范围样式，自动合并进站点CSS */
    .about-hero {
      padding: 5rem 0 3rem;
    }
.about-hero h1 {
      color: var(--text);
      font-weight: 800;
      font-size: 2.5rem;
    }
.about-hero h1 .highlight {
      color: var(--primary);
    }
.about-hero p.lead {
      color: var(--text-muted);
      max-width: 680px;
      margin: 1rem auto 0;
    }
.about-section {
      padding: 3rem 0;
    }
.about-section h2 {
      color: var(--primary);
      font-weight: 700;
      font-size: 1.75rem;
      margin-bottom: 1.25rem;
    }
.about-section h2 i {
      margin-right: .5rem;
      color: var(--accent);
    }
.about-section p {
      color: var(--text);
      line-height: 1.8;
      margin-bottom: 1rem;
    }
.about-section .muted-text {
      color: var(--text-muted);
    }
.about-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.5rem;
      margin-top: 1rem;
    }
.about-card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 1.75rem 1.5rem;
      transition: transform .2s ease, border-color .2s ease;
    }
.about-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
    }
.about-card .card-icon {
      font-size: 1.8rem;
      color: var(--accent);
      margin-bottom: .75rem;
    }
.about-card h3 {
      color: var(--text);
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: .5rem;
    }
.about-card p {
      color: var(--text-muted);
      font-size: .95rem;
      line-height: 1.6;
      margin-bottom: 0;
    }
.about-badge {
      display: inline-block;
      background: rgba(34, 211, 238, .12);
      color: var(--primary);
      border: 1px solid rgba(34, 211, 238, .25);
      border-radius: 30px;
      padding: .3rem .9rem;
      font-size: .85rem;
      font-weight: 600;
      margin-right: .5rem;
      margin-bottom: .5rem;
    }
.about-quote {
      border-left: 4px solid var(--accent);
      padding: .75rem 1.25rem;
      margin: 1.5rem 0;
      background: rgba(251, 146, 60, .05);
      border-radius: 0 10px 10px 0;
      color: var(--text);
      font-style: italic;
    }
/* 覆盖Bootstrap可能出现的白底 */
    .about-section .card, .about-section .card-body {
      background: var(--card-bg);
      color: var(--text);
      border-color: var(--border-color);
    }

/* --- 子页面追加 --- */
.page-header {
      padding: 120px 0 40px;
      border-bottom: 1px solid var(--border-color);
    }
.page-header .section-label {
      margin-bottom: 12px;
    }
.legal-section {
      padding: 60px 0;
      border-bottom: 1px solid var(--border-color);
    }
.legal-section:last-child {
      border-bottom: none;
    }
.legal-section .section-title {
      font-size: 1.6rem;
      text-align: left;
      margin-bottom: 20px;
    }
.legal-section p {
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 16px;
    }
.legal-section ul {
      color: var(--text-muted);
      padding-left: 20px;
      line-height: 1.8;
    }
.legal-section li {
      margin-bottom: 8px;
    }
.highlight-box {
      background: rgba(34, 211, 238, 0.05);
      border-left: 3px solid var(--primary);
      padding: 16px 20px;
      border-radius: 0 8px 8px 0;
      margin: 20px 0;
      color: var(--text-muted);
    }
.footer-cta {
      padding: 60px 0;
      text-align: center;
    }
.footer-cta .btn-cy {
      margin-top: 20px;
    }

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