*,
  *::before,
  *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: "Segoe UI", "Helvetica Neue", Arial, "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
    background: linear-gradient(145deg, #f0f9ff 0%, #bae6fd 45%, #7dd3fc 100%);
    color: #0f172a;
    line-height: 1.7;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
  }
  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(125, 211, 252, 0.35);
    padding: 0 40px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 24px rgba(14, 165, 233, 0.08);
  }
  .logo {
    font-size: 21px;
    font-weight: 700;
    color: #0284c7;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.5px;
  }
  .logo img {
    height: 30px;
    width: auto;
    display: block;
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
  }
  .nav-links a {
    color: #1e293b;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 22px;
    transition: all 0.25s ease;
  }
  .nav-links a:hover {
    background: rgba(125, 211, 252, 0.3);
    color: #0369a1;
  }
  @media (max-width: 900px) {
    .navbar {
      padding: 0 16px;
    }
    .nav-links a {
      font-size: 12px;
      padding: 6px 10px;
    }
  }
  .section {
    max-width: 1280px;
    margin: 0 auto;
    padding: 72px 40px;
  }
  .hero {
    padding: 130px 32px 64px;
    text-align: center;
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
  }
  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.6) 0%, transparent 60%),
      radial-gradient(circle at 80% 80%, rgba(56, 189, 248, 0.3) 0%, transparent 50%);
    pointer-events: none;
  }
  .hero h1 {
    font-size: 38px;
    font-weight: 800;
    color: #0c4a6e;
    line-height: 1.3;
    max-width: 900px;
    position: relative;
    z-index: 1;
  }
  .hero-sub {
    font-size: 15px;
    color: #334155;
    max-width: 800px;
    margin: 24px auto 36px;
    position: relative;
    z-index: 1;
    text-align: center;
    background: rgba(255, 255, 255, 0.4);
    padding: 20px 28px;
    border-radius: 24px;
    backdrop-filter: blur(6px);
  }
  .hero-imgs {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    position: relative;
    z-index: 1;
    margin-top: 10px;
  }
  .hero-imgs img {
    width: 260px;
    height: 170px;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: 0 16px 40px rgba(2, 132, 199, 0.2);
    transition: transform 0.4s ease;
  }
  .hero-imgs img:hover {
    transform: translateY(-6px);
  }
  .section-title {
    font-size: 30px;
    font-weight: 800;
    color: #0c4a6e;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
  }
  .section-sub {
    text-align: center;
    color: #475569;
    font-size: 14px;
    max-width: 680px;
    margin: 0 auto 44px;
  }
  .card {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 12px 32px rgba(2, 132, 199, 0.08);
    transition: all 0.3s ease;
  }
  .card:hover {
    box-shadow: 0 20px 48px rgba(2, 132, 199, 0.14);
    transform: translateY(-4px);
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .stat-card {
    padding: 32px 20px;
    text-align: center;
  }
  .stat-num {
    font-size: 40px;
    font-weight: 800;
    color: #0284c7;
    display: block;
  }
  .stat-label {
    font-size: 14px;
    color: #475569;
    margin-top: 8px;
    display: block;
  }
  @media (max-width: 900px) {
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .section {
      padding: 48px 20px;
    }
  }
  .adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .adv-card {
    padding: 28px 24px;
  }
  .adv-icon {
    font-size: 36px;
    margin-bottom: 12px;
    display: block;
  }
  .adv-card h3 {
    font-size: 18px;
    color: #0c4a6e;
    margin-bottom: 10px;
  }
  .adv-card p {
    font-size: 13px;
    color: #475569;
  }
  @media (max-width: 900px) {
    .adv-grid {
      grid-template-columns: 1fr;
    }
  }
  .feat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .feat-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }
  .feat-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
  }
  .feat-body {
    padding: 24px;
    flex: 1;
  }
  .feat-body h3 {
    font-size: 18px;
    color: #0c4a6e;
    margin-bottom: 8px;
  }
  .feat-body p {
    font-size: 13px;
    color: #475569;
  }
  .feat-tag {
    display: inline-block;
    background: rgba(14, 165, 233, 0.15);
    color: #0369a1;
    font-size: 12px;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 12px;
    font-weight: 600;
  }
  @media (max-width: 900px) {
    .feat-grid {
      grid-template-columns: 1fr;
    }
  }
  .news-wrap {
    max-width: 900px;
    margin: 0 auto;
  }
  .news-item {
    padding: 28px 32px;
    margin-bottom: 20px;
  }
  .news-date {
    display: inline-block;
    background: rgba(125, 211, 252, 0.2);
    color: #0369a1;
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 10px;
  }
  .news-item h3 {
    font-size: 19px;
    color: #0c4a6e;
    margin-bottom: 8px;
  }
  .news-item p {
    font-size: 14px;
    color: #334155;
    line-height: 1.7;
  }
  .brand-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }
  .brand-img img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: 0 16px 48px rgba(2, 132, 199, 0.18);
  }
  .brand-text p {
    font-size: 14px;
    color: #334155;
    margin-bottom: 14px;
  }
  @media (max-width: 900px) {
    .brand-grid {
      grid-template-columns: 1fr;
    }
  }
  .coverage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .cvg-item {
    padding: 24px;
    text-align: center;
  }
  .cvg-item img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 12px;
  }
  .cvg-item h4 {
    font-size: 16px;
    color: #0c4a6e;
  }
  .cvg-item p {
    font-size: 12px;
    color: #64748b;
  }
  @media (max-width: 900px) {
    .coverage-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  .faq-wrap {
    max-width: 860px;
    margin: 0 auto;
  }
  .faq-item {
    margin-bottom: 16px;
    overflow: hidden;
  }
  .faq-item summary {
    padding: 22px 28px;
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    color: #0c4a6e;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.3s;
  }
  .faq-item summary::-webkit-details-marker {
    display: none;
  }
  .faq-item summary::after {
    content: "＋";
    font-size: 20px;
    color: #0284c7;
    transition: transform 0.3s;
  }
  .faq-item[open] summary::after {
    content: "－";
  }
  .faq-item .ans {
    padding: 0 28px 24px;
    font-size: 14px;
    color: #334155;
    line-height: 1.7;
    border-top: 1px solid rgba(125, 211, 252, 0.2);
    padding-top: 16px;
  }
  .cta {
    text-align: center;
    padding: 80px 32px;
    position: relative;
    overflow: hidden;
  }
  .cta-inner {
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.55);
    border-radius: 32px;
    padding: 48px;
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.7);
  }
  .cta-inner h2 {
    font-size: 28px;
    color: #0c4a6e;
    margin-bottom: 12px;
  }
  .cta-inner p {
    font-size: 15px;
    color: #475569;
    margin-bottom: 24px;
  }
  .btn {
    display: inline-block;
    background: linear-gradient(90deg, #0284c7, #38bdf8);
    color: #fff;
    text-decoration: none;
    padding: 14px 36px;
    border-radius: 32px;
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 8px 24px rgba(2, 132, 199, 0.25);
    transition: all 0.3s;
  }
  .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(2, 132, 199, 0.35);
  }
  .footer {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    color: #a5b4c2;
    padding: 48px 40px 24px;
    text-align: center;
    border-top: 1px solid rgba(125, 211, 252, 0.15);
  }
  .footer a {
    color: #7dd3fc;
    text-decoration: none;
    transition: color 0.3s;
  }
  .footer a:hover {
    color: #fff;
  }
  .footer-info {
    max-width: 800px;
    margin: 0 auto;
    font-size: 13px;
    line-height: 1.8;
  }
  .footer-info span.sec {
    display: inline-block;
    margin: 4px 12px;
  }
  .footer-bottom {
    margin-top: 32px;
    font-size: 13px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
  }
  .footer-bottom a {
    margin: 0 10px;
  }