:root {
    --bg: #0b0d17;
    --brand: #e50914;
    --text-main: #ffffff;
    --text-sub: rgba(255,255,255,0.66);
    --glass-bg: rgba(255,255,255,0.07);
    --glass-bg-hover: rgba(255,255,255,0.1);
    --glass-border: rgba(255,255,255,0.22);
    --glass-radius: 24px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

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

  html {
    scroll-behavior: smooth;
    background-color: var(--bg);
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-main);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
  }

  /* 背景光斑与模糊层 */
  .bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: url('images/u=2524461391,1983456389&fm=253&fmt=auto&app=138&f=JPEG.webp') no-repeat center center;
    background-size: cover;
    filter: blur(70px);
    opacity: 0.25;
  }
  .bg-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
  }
  .blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
  }
  .blob-purple { width: 600px; height: 600px; background: #6a0dad; top: -100px; left: -100px; }
  .blob-pink { width: 500px; height: 500px; background: #ff007f; top: 40%; right: -150px; }
  .blob-cyan { width: 500px; height: 500px; background: #00e5ff; bottom: -100px; left: 20%; }

  /* 公共样式 */
  a { text-decoration: none; color: inherit; }
  ul { list-style: none; }
  .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
  .glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-radius: var(--glass-radius);
    transition: var(--transition);
  }
  .glass-card:hover {
    transform: translateY(-5px);
    background: var(--glass-bg-hover);
    border-color: rgba(255,255,255,0.4);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  }
  .text-gradient {
    background: linear-gradient(135deg, #fff, #b3b3b3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
  }
  .section-padding { padding: 80px 0; }
  .section-title { font-size: 32px; font-weight: 700; margin-bottom: 12px; text-align: center; }
  .section-subtitle { color: var(--text-sub); text-align: center; margin-bottom: 48px; font-size: 16px; }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 99px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
  }
  .btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 4px 15px rgba(229, 9, 20, 0.4);
  }
  .btn-primary:hover { background: #f6121d; transform: scale(1.05); }
  .btn-secondary {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
  }
  .btn-secondary:hover { background: rgba(255,255,255,0.2); transform: scale(1.05); }

  /* 头部导航 */
  .navbar {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1100px;
    height: 64px;
    background: rgba(20, 22, 35, 0.7);
    border: 1px solid rgba(255,255,255,0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 99px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1000;
    transition: var(--transition);
  }
  .nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
  .nav-brand img { height: 32px; border-radius: 6px; }
  .nav-links { display: flex; gap: 24px; }
  .nav-links a { font-size: 14px; color: var(--text-sub); transition: var(--transition); }
  .nav-links a:hover, .nav-links a.active { color: #fff; font-weight: 600; }
  .mobile-menu-btn { display: none; background: none; border: none; color: #fff; font-size: 24px; cursor: pointer; }
  
  .mobile-nav {
    display: none;
    position: fixed;
    top: 90px;
    left: 5%;
    width: 90%;
    background: rgba(20, 22, 35, 0.95);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 20px;
    padding: 20px;
    z-index: 999;
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  .mobile-nav.open { display: flex; }
  .mobile-nav a { color: #fff; font-size: 16px; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }

  /* 主视觉 */
  .hero {
    padding-top: 160px;
    padding-bottom: 80px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 8px 20px;
    border-radius: 99px;
    font-size: 14px;
    color: var(--text-sub);
    margin-bottom: 24px;
  }
  .hero-badge i {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--brand);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--brand);
  }
  .hero h1 { font-size: clamp(40px, 6vw, 72px); font-weight: 800; letter-spacing: -1px; margin-bottom: 20px; }
  .hero p { font-size: 18px; color: var(--text-sub); max-width: 600px; margin: 0 auto 40px auto; }
  .hero-actions { display: flex; gap: 16px; margin-bottom: 60px; }
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    width: 100%;
    gap: 16px;
  }
  .stat-item {
    padding: 24px;
    text-align: center;
  }
  .stat-num { font-size: 32px; font-weight: 800; margin-bottom: 8px; color: #fff; }
  .stat-label { font-size: 14px; color: var(--text-sub); }

  /* 正在热播 */
  .hot-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .hot-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 3 / 4;
    background: #1a1a1a;
  }
  .hot-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
  }
  .hot-card:hover img { transform: scale(1.08); }
  .hot-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 40px 16px 16px;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .hot-title { font-weight: 700; font-size: 16px; }
  .hot-status { font-size: 12px; color: var(--text-sub); }

  /* 玻璃推荐 */
  .promo-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .promo-card {
    display: flex;
    flex-direction: column;
    padding: 32px;
    min-height: 300px;
    justify-content: center;
  }
  .promo-card h3 { font-size: 24px; margin-bottom: 16px; }
  .promo-card p { color: var(--text-sub); font-size: 15px; margin-bottom: 24px; }
  .tags { display: flex; gap: 10px; flex-wrap: wrap; }
  .tags span {
    background: rgba(255,255,255,0.1);
    padding: 6px 14px;
    border-radius: 99px;
    font-size: 13px;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.05);
  }

  /* 本周热度 */
  .rank-list { display: flex; flex-direction: column; gap: 12px; }
  .rank-item {
    display: flex;
    align-items: center;
    padding: 16px 24px;
    gap: 20px;
  }
  .rank-num { font-size: 24px; font-weight: 800; color: var(--brand); width: 40px; text-align: center; }
  .rank-thumb { width: 38px; height: 52px; border-radius: 6px; object-fit: cover; }
  .rank-name { flex: 1; font-weight: 600; font-size: 16px; }
  .rank-percent { font-size: 16px; font-weight: 700; color: #fff; }

  /* 专区 */
  .zone-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .zone-card { overflow: hidden; display: flex; flex-direction: column; }
  .zone-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
  .zone-content { padding: 24px; }
  .zone-content h3 { margin-bottom: 8px; font-size: 18px; }
  .zone-content p { color: var(--text-sub); font-size: 14px; }

  /* 他们在看 */
  .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .review-card { padding: 24px; display: flex; flex-direction: column; gap: 16px; }
  .user-info { display: flex; align-items: center; gap: 12px; }
  .avatar { width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, #e50914, #6a0dad); }
  .stars { color: #ffb400; font-size: 14px; }
  .review-text { color: var(--text-sub); font-size: 14px; line-height: 1.5; }
  .review-meta { font-size: 12px; color: rgba(255,255,255,0.4); margin-top: auto; }

  /* 使用指南 */
  .guide-wrapper { display: flex; gap: 40px; align-items: flex-start; }
  .guide-left { flex: 1; position: sticky; top: 100px; }
  .phone-mockup {
    border-radius: 36px;
    border: 8px solid #333;
    overflow: hidden;
    aspect-ratio: 9 / 17;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  }
  .phone-mockup img { width: 100%; height: 100%; object-fit: cover; }
  .guide-right { flex: 1.2; display: flex; flex-direction: column; gap: 16px; }
  .step-card { padding: 24px; }
  .step-card h4 { font-size: 18px; margin-bottom: 12px; color: #fff; }
  .step-detail { margin-bottom: 8px; font-size: 14px; }
  .step-detail span { color: var(--text-sub); display: inline-block; width: 40px; }

  /* FAQ */
  .faq-groups { display: flex; flex-direction: column; gap: 32px; }
  .faq-group-title { font-size: 20px; color: var(--text-sub); margin-bottom: 16px; border-left: 4px solid var(--brand); padding-left: 12px; }
  .faq-list { display: flex; flex-direction: column; gap: 12px; }
  .faq-item { padding: 20px 24px; }
  .faq-q { font-size: 16px; font-weight: 600; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
  .faq-q::before { content: "Q"; color: var(--brand); font-weight: 800; }
  .faq-a { font-size: 14px; color: var(--text-sub); line-height: 1.7; }
  .faq-img { width: 100%; max-width: 600px; border-radius: 12px; margin-top: 16px; display: block; }

  /* 下载区 */
  .download-section { text-align: center; padding-bottom: 80px; }
  .download-card { padding: 60px 40px; display: flex; flex-direction: column; align-items: center; }
  .download-card h2 { font-size: 36px; margin-bottom: 16px; }
  .download-card p { color: var(--text-sub); margin-bottom: 32px; }
  .download-card .btn { width: 200px; margin-bottom: 24px; }
  .download-platforms { font-size: 14px; color: rgba(255,255,255,0.4); letter-spacing: 2px; }

  /* 页脚 */
  footer {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 32px 24px;
    text-align: center;
    font-size: 12px;
    color: rgba(255,255,255,0.4);
  }
  footer p { margin-bottom: 8px; }
  footer a { color: rgba(255,255,255,0.4); text-decoration: underline; transition: var(--transition); }
  footer a:hover { color: #fff; }
  .update-time { font-size: 12px; color: rgba(255,255,255,0.3); margin-top: 12px; }

  /* 响应式 */
  @media (max-width: 1024px) {
    .hot-row { grid-template-columns: repeat(3, 1fr); }
    .zone-grid { grid-template-columns: repeat(2, 1fr); }
    .reviews-grid { grid-template-columns: repeat(2, 1fr); }
    .guide-wrapper { flex-direction: column; }
    .guide-left { position: static; width: 100%; max-width: 320px; margin: 0 auto 32px; }
  }

  @media (max-width: 768px) {
    .navbar { width: 95%; padding: 0 16px; top: 10px; }
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .hero-actions { flex-direction: column; width: 100%; max-width: 300px; }
    .promo-row { grid-template-columns: 1fr; }
    .hot-row { grid-template-columns: repeat(2, 1fr); }
    .zone-grid { grid-template-columns: 1fr; }
    .reviews-grid { grid-template-columns: 1fr; }
    .section-title { font-size: 26px; }
    .download-card { padding: 40px 20px; }
    .download-card h2 { font-size: 28px; }
  }