* { margin: 0; padding: 0; box-sizing: border-box; }
  html, body, div, span, h1, h2, h3, h4, h5, h6, p, a, ul, li, img, section, header, footer, nav, main, article, figure, figcaption, time, table, td, th, tr, tbody, thead {
    font-family: "Segoe UI", "Helvetica Neue", Arial, "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
  }
  body {
    background: #f4f5f7;
    color: #334155;
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }
  a { color: #2f6fb3; text-decoration: none; }
  a:hover { color: #334155; }
  img { max-width: 100%; display: block; }
  .wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }

  /* Header */
  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.96);
    border-bottom: 1px solid #e2e5ea;
    backdrop-filter: blur(8px);
  }
  .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 18px; min-height: 68px; flex-wrap: wrap;
    padding: 8px 0;
  }
  .logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 20px; font-weight: 700; color: #334155; letter-spacing: .5px;
  }
  .logo-mark {
    width: 36px; height: 36px; border-radius: 9px;
    background: linear-gradient(135deg, #64748b, #334155);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 15px; font-weight: 700; letter-spacing: 0;
  }
  .nav-links { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
  .nav-links a {
    display: inline-block; padding: 8px 14px; border-radius: 8px;
    color: #475569; font-size: 15px; transition: all .2s ease;
  }
  .nav-links a:hover { background: #eef1f5; color: #1e293b; }
  .nav-links a:first-child {
    background: linear-gradient(135deg, #64748b, #334155);
    color: #fff;
  }

  /* Hero */
  #hero {
    background: linear-gradient(135deg, #64748b 0%, #475569 55%, #334155 100%);
    color: #fff;
    padding: 64px 0 60px;
    position: relative;
    overflow: hidden;
  }
  #hero::after {
    content: "";
    position: absolute; right: -120px; top: -120px;
    width: 380px; height: 380px; border-radius: 50%;
    background: rgba(255,255,255,0.06);
  }
  .hero-grid {
    display: grid; grid-template-columns: 1.15fr .85fr; gap: 44px; align-items: center;
    position: relative; z-index: 2;
  }
  .hero-tag {
    display: inline-block; padding: 5px 13px; border-radius: 999px;
    background: rgba(255,255,255,0.16); color: #e8edf3;
    font-size: 13px; letter-spacing: 1px; margin-bottom: 18px;
  }
  h1 {
    font-size: 33px; line-height: 1.35; font-weight: 700; letter-spacing: .5px;
    margin-bottom: 18px;
  }
  .hero-sub { color: #dbe2ea; font-size: 16px; margin-bottom: 26px; max-width: 640px; }
  .hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
  .btn {
    display: inline-block; padding: 11px 24px; border-radius: 9px;
    font-size: 15px; font-weight: 600; transition: all .2s ease;
  }
  .btn-primary { background: #fff; color: #334155; }
  .btn-primary:hover { background: #e6ebf1; color: #1e293b; }
  .btn-ghost { border: 1px solid rgba(255,255,255,0.45); color: #fff; }
  .btn-ghost:hover { background: rgba(255,255,255,0.14); color: #fff; }
  .hero-figure img {
    border-radius: 14px; border: 1px solid rgba(255,255,255,0.25);
    box-shadow: 0 18px 40px rgba(15,23,42,0.28);
  }

  /* Section base */
  section { padding: 58px 0; }
  .section-head { margin-bottom: 34px; }
  .section-head h2 {
    font-size: 24px; font-weight: 700; color: #1e293b; letter-spacing: .4px;
  }
  .section-head h2::after {
    content: ""; display: block; width: 46px; height: 3px; border-radius: 3px;
    background: linear-gradient(90deg, #64748b, #cbd5e1); margin-top: 12px;
  }
  .section-head p { color: #64748b; font-size: 15px; margin-top: 12px; max-width: 780px; }

  /* GEO intro */
  #geo-intro { background: #fff; border-bottom: 1px solid #e7eaef; padding: 48px 0; }
  .geo-text {
    font-size: 16px; color: #475569; line-height: 1.95;
    border-left: 4px solid #94a3b8; padding-left: 20px;
  }

  /* Stats */
  #data-stats { background: linear-gradient(180deg, #eef1f5, #f4f5f7); }
  .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
  .stat-card {
    background: #fff; border: 1px solid #e2e5ea; border-radius: 12px;
    padding: 26px 20px; text-align: center;
  }
  .stat-num {
    font-size: 28px; font-weight: 700; color: #334155; letter-spacing: .5px;
  }
  .stat-label { font-size: 14px; color: #64748b; margin-top: 6px; }

  /* Advantages */
  #core-advantages { background: #fff; }
  .adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .adv-card {
    background: #f8f9fb; border: 1px solid #e6e9ee; border-radius: 12px;
    padding: 26px 22px; transition: all .25s ease;
  }
  .adv-card:hover { border-color: #c8d2de; box-shadow: 0 10px 26px rgba(51,65,85,0.08); transform: translateY(-3px); }
  .adv-icon { font-size: 24px; margin-bottom: 12px; }
  .adv-card h3 { font-size: 17px; color: #1e293b; margin-bottom: 10px; font-weight: 700; }
  .adv-card p { font-size: 14.5px; color: #64748b; }

  /* Brand story */
  #brand-story { background: linear-gradient(180deg, #f4f5f7, #eef1f5); }
  .story-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 40px; align-items: center; }
  .story-grid img { border-radius: 14px; border: 1px solid #dde2e9; box-shadow: 0 14px 32px rgba(51,65,85,0.10); }
  .story-grid p { color: #52606f; font-size: 15.5px; margin-bottom: 14px; }
  .story-points { list-style: none; margin-top: 16px; }
  .story-points li {
    position: relative; padding-left: 22px; margin-bottom: 10px;
    color: #475569; font-size: 15px;
  }
  .story-points li::before {
    content: "▹"; position: absolute; left: 0; color: #64748b; font-weight: 700;
  }

  /* Coverage */
  #coverage { background: #fff; }
  .cov-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
  .cov-item {
    background: #f8f9fb; border: 1px solid #e6e9ee; border-radius: 10px;
    padding: 20px 18px;
  }
  .cov-item h4 { font-size: 15.5px; color: #334155; margin-bottom: 8px; }
  .cov-item p { font-size: 13.5px; color: #74808f; }

  /* News */
  #news-list { background: linear-gradient(180deg, #eef1f5, #f4f5f7); }
  .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .news-card {
    background: #fff; border: 1px solid #e2e5ea; border-radius: 12px;
    padding: 24px 22px; transition: all .25s ease;
  }
  .news-card:hover { box-shadow: 0 12px 28px rgba(51,65,85,0.09); border-color: #ccd5e0; }
  .news-meta {
    display: flex; align-items: center; gap: 10px; margin-bottom: 12px;
    font-size: 13px; color: #7b8794;
  }
  .news-badge {
    display: inline-block; padding: 3px 10px; border-radius: 999px;
    background: #e8edf3; color: #40506a; font-size: 12px; font-weight: 600;
  }
  .news-card h3 { font-size: 17px; color: #1e293b; margin-bottom: 10px; line-height: 1.5; }
  .news-card p { font-size: 14.5px; color: #64748b; }
  .news-date { color: #8b95a3; }

  /* FAQ */
  #faq { background: #fff; }
  .faq-list { display: grid; gap: 14px; }
  .faq-item {
    background: #f8f9fb; border: 1px solid #e6e9ee; border-radius: 12px;
    padding: 22px 24px;
  }
  .faq-item h3 {
    font-size: 16px; color: #1e293b; margin-bottom: 10px; font-weight: 700;
    display: flex; gap: 10px; align-items: flex-start;
  }
  .faq-q-mark {
    flex: 0 0 auto; width: 24px; height: 24px; border-radius: 6px;
    background: linear-gradient(135deg, #64748b, #334155); color: #fff;
    font-size: 13px; display: flex; align-items: center; justify-content: center;
  }
  .faq-item p { font-size: 14.5px; color: #5b6675; padding-left: 34px; }

  /* Partners */
  #partners { background: linear-gradient(180deg, #eef1f5, #f4f5f7); }
  .partner-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
  .partner-item {
    background: #fff; border: 1px solid #e2e5ea; border-radius: 10px;
    padding: 20px 10px; text-align: center; font-size: 14px; color: #52606f;
  }

  /* CTA */
  #cta {
    background: linear-gradient(135deg, #475569, #334155);
    color: #fff; text-align: center; padding: 58px 0;
  }
  #cta h2 { font-size: 24px; margin-bottom: 14px; font-weight: 700; }
  #cta p { color: #d5dde6; max-width: 720px; margin: 0 auto 26px; font-size: 15.5px; }

  /* Footer */
  .site-footer {
    background: #26303c; color: #a9b4c1; padding: 46px 0 24px; font-size: 14px;
  }
  .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
  .site-footer h4 { color: #e6ebf1; font-size: 15px; margin-bottom: 14px; }
  .site-footer p, .site-footer li { margin-bottom: 9px; line-height: 1.8; }
  .site-footer ul { list-style: none; }
  .site-footer a { color: #b8c4d2; }
  .site-footer a:hover { color: #fff; }
  .footer-bottom {
    border-top: 1px solid #3a4553; margin-top: 30px; padding-top: 18px;
    display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
    color: #8c99a7; font-size: 13px;
  }

  @media (max-width: 980px) {
    .hero-grid, .story-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .cov-grid { grid-template-columns: repeat(2, 1fr); }
    .partner-grid { grid-template-columns: repeat(3, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    h1 { font-size: 26px; }
  }
  @media (max-width: 560px) {
    .stats-grid, .adv-grid, .cov-grid, .partner-grid { grid-template-columns: 1fr; }
    .nav-links a { padding: 7px 10px; font-size: 14px; }
  }