:root {
      --bg: #f4f9fc;
      --bg-2: #eaf4fb;
      --surface: rgba(255, 255, 255, 0.88);
      --surface-solid: #ffffff;
      --text: #162334;
      --muted: #5d6d7d;
      --line: #d8e7ef;
      --primary: #0876b8;
      --primary-dark: #045c92;
      --ice: #c9efff;
      --accent: #40a9d8;
      --soft: #eef8fd;
      --shadow: 0 18px 45px rgba(26, 88, 128, 0.12);
      --radius: 24px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 6%, rgba(145, 219, 250, 0.45), transparent 28%),
        radial-gradient(circle at 85% 18%, rgba(215, 244, 255, 0.75), transparent 30%),
        linear-gradient(180deg, #f8fcff 0%, var(--bg) 42%, #f7fbfd 100%);
      line-height: 1.65;
      overflow-x: hidden;
    }

    a {
      color: inherit;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: min(100% - 32px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(248, 252, 255, 0.86);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(178, 213, 231, 0.55);
    }

    .nav {
      min-height: 70px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: #102538;
      flex: 0 0 auto;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #ffffff;
      background: linear-gradient(135deg, #066da8, #62c8ed);
      box-shadow: 0 12px 28px rgba(8, 118, 184, 0.22);
      font-size: 22px;
      line-height: 1;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
    }

    .brand-text span:first-child {
      font-size: 17px;
    }

    .brand-text span:last-child {
      font-size: 12px;
      color: var(--muted);
      font-weight: 600;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 8px;
      margin-left: auto;
    }

    .nav-links a {
      text-decoration: none;
      color: #24374a;
      font-size: 14px;
      font-weight: 700;
      padding: 10px 12px;
      border-radius: 999px;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .nav-links a:hover {
      background: #e2f3fb;
      color: var(--primary-dark);
      transform: translateY(-1px);
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      border-radius: 999px;
      padding: 10px 16px;
      background: #102f49;
      color: #ffffff;
      font-weight: 800;
      font-size: 14px;
      box-shadow: 0 12px 28px rgba(16, 47, 73, 0.18);
      white-space: nowrap;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .nav-action:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 34px rgba(16, 47, 73, 0.24);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      color: var(--text);
      border-radius: 12px;
      padding: 9px 12px;
      font-weight: 800;
      cursor: pointer;
    }

    main {
      position: relative;
    }

    .hero {
      padding: 58px 0 34px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
      gap: 30px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid rgba(8, 118, 184, 0.18);
      background: rgba(255, 255, 255, 0.76);
      color: var(--primary-dark);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      box-shadow: 0 10px 28px rgba(8, 118, 184, 0.08);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #51bfe8;
      box-shadow: 0 0 0 5px rgba(81, 191, 232, 0.16);
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(32px, 6vw, 56px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #0f2538;
    }

    .hero-lead {
      max-width: 640px;
      color: #425466;
      font-size: 17px;
      margin: 0 0 24px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin: 24px 0 22px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 15px;
      text-decoration: none;
      font-weight: 850;
      border: 1px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
      cursor: pointer;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), #54c5e9);
      color: #ffffff;
      box-shadow: 0 16px 34px rgba(8, 118, 184, 0.24);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.82);
      color: #17314a;
      border-color: rgba(151, 198, 220, 0.62);
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(8, 118, 184, 0.18);
    }

    .quick-facts {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      max-width: 650px;
    }

    .fact {
      padding: 12px 13px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.68);
      border: 1px solid rgba(187, 218, 232, 0.68);
      color: #274156;
      font-size: 13px;
      font-weight: 700;
    }

    .hero-visual {
      position: relative;
      border-radius: 34px;
      padding: 18px;
      background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(225, 245, 253, 0.72));
      border: 1px solid rgba(183, 222, 239, 0.78);
      box-shadow: var(--shadow);
      overflow: hidden;
      isolation: isolate;
    }

    .hero-visual::before {
      content: "";
      position: absolute;
      inset: auto -20% -22% 22%;
      height: 170px;
      background: radial-gradient(circle, rgba(78, 194, 235, 0.32), transparent 62%);
      z-index: -1;
      animation: drift 6.5s ease-in-out infinite alternate;
    }

    .phone-showcase {
      display: grid;
      grid-template-columns: 1fr 0.82fr;
      gap: 12px;
      align-items: stretch;
    }

    .phone-card {
      border-radius: 24px;
      overflow: hidden;
      background: #eaf5fa;
      border: 1px solid rgba(203, 228, 240, 0.9);
      min-height: 180px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .phone-card.large {
      grid-row: span 2;
    }

    .phone-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .phone-card:hover img {
      transform: scale(1.035);
    }

    .visual-note {
      margin-top: 14px;
      padding: 14px 15px;
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(193, 222, 236, 0.72);
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #334b60;
      font-size: 14px;
    }

    .visual-note strong {
      color: #0d334f;
    }

    section {
      padding: 34px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 22px;
    }

    .section-kicker {
      margin: 0 0 6px;
      color: var(--primary-dark);
      font-weight: 850;
      font-size: 13px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    h2 {
      margin: 0;
      font-size: clamp(25px, 4vw, 36px);
      line-height: 1.18;
      letter-spacing: -0.03em;
      color: #12283b;
    }

    .section-desc {
      margin: 0;
      max-width: 440px;
      color: var(--muted);
      font-size: 15px;
    }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }

    .service-card {
      position: relative;
      padding: 20px;
      border-radius: 24px;
      background: var(--surface);
      border: 1px solid rgba(189, 219, 233, 0.78);
      box-shadow: 0 12px 32px rgba(26, 88, 128, 0.08);
      overflow: hidden;
      transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
    }

    .service-card::after {
      content: "";
      position: absolute;
      right: -22px;
      top: -22px;
      width: 70px;
      height: 70px;
      border-radius: 50%;
      background: rgba(86, 197, 235, 0.16);
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: rgba(72, 174, 217, 0.56);
      box-shadow: 0 18px 38px rgba(26, 88, 128, 0.13);
    }

    .icon {
      width: 40px;
      height: 40px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      background: #e1f4fb;
      color: var(--primary-dark);
      font-weight: 900;
      margin-bottom: 14px;
    }

    h3 {
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.35;
      color: #152b3e;
    }

    .service-card p,
    .solution-item p,
    .assurance-card p,
    .faq-answer p {
      margin: 0;
      color: #5c6d7b;
      font-size: 14px;
    }

    .solution-wrap {
      display: grid;
      grid-template-columns: 0.82fr 1.18fr;
      gap: 18px;
      align-items: stretch;
    }

    .diagnosis-panel {
      border-radius: 28px;
      padding: 24px;
      background: linear-gradient(145deg, #ffffff, #e8f6fc);
      border: 1px solid rgba(185, 219, 235, 0.86);
      box-shadow: var(--shadow);
    }

    .diagnosis-panel ul {
      padding: 0;
      margin: 18px 0 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .diagnosis-panel li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.72);
      color: #31495d;
      font-size: 14px;
      border: 1px solid rgba(215, 234, 243, 0.88);
    }

    .check {
      width: 22px;
      height: 22px;
      flex: 0 0 auto;
      border-radius: 8px;
      background: #d9f3fd;
      color: var(--primary-dark);
      display: grid;
      place-items: center;
      font-size: 13px;
      font-weight: 900;
      margin-top: 1px;
    }

    .solution-list {
      display: grid;
      gap: 12px;
    }

    .solution-item {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      align-items: start;
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid rgba(190, 220, 234, 0.78);
    }

    .step-num {
      width: 34px;
      height: 34px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      background: #12344f;
      color: #ffffff;
      font-weight: 900;
      font-size: 14px;
    }

    .assurance-band {
      border-radius: 30px;
      padding: 24px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.88), rgba(224, 245, 253, 0.82)),
        repeating-linear-gradient(45deg, rgba(8, 118, 184, 0.05) 0 1px, transparent 1px 12px);
      border: 1px solid rgba(178, 215, 232, 0.86);
      box-shadow: var(--shadow);
    }

    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      margin-top: 18px;
    }

    .assurance-card {
      padding: 18px;
      border-radius: 22px;
      background: #ffffff;
      border: 1px solid #dbeaf1;
    }

    .policy-list {
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }

    .policy-list li {
      padding: 13px 14px;
      border-radius: 16px;
      background: #f2f9fd;
      color: #33495d;
      font-size: 14px;
      border: 1px solid #d9edf6;
    }

    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 0.9fr;
      gap: 18px;
      align-items: stretch;
    }

    .contact-card,
    .qr-card {
      border-radius: 28px;
      background: var(--surface-solid);
      border: 1px solid rgba(188, 218, 233, 0.86);
      box-shadow: 0 16px 38px rgba(26, 88, 128, 0.1);
      padding: 24px;
    }

    .info-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .info-row {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 12px;
      padding: 13px 0;
      border-bottom: 1px solid #e4f0f5;
      color: #32495e;
    }

    .info-row:last-child {
      border-bottom: 0;
    }

    .info-row strong {
      color: #102b42;
    }

    .qr-grid {
      display: grid;
      grid-template-columns: 170px 1fr;
      gap: 18px;
      align-items: center;
      margin-top: 18px;
    }

    .qr-box {
      padding: 10px;
      background: #f1f9fd;
      border-radius: 20px;
      border: 1px solid #d9edf6;
    }

    .qr-box img {
      border-radius: 14px;
      width: 100%;
      aspect-ratio: 1 / 1;
      object-fit: contain;
      background: #ffffff;
    }

    .map-link {
      display: inline-flex;
      margin-top: 12px;
      padding: 10px 12px;
      border-radius: 13px;
      background: #e7f5fb;
      border: 1px solid #cfe7f2;
      font-weight: 800;
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid rgba(189, 219, 233, 0.86);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: transparent;
      color: #17304a;
      text-align: left;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 850;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .faq-question span:last-child {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #e8f6fc;
      color: var(--primary-dark);
      flex: 0 0 auto;
      transition: transform 0.2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .faq-item.active .faq-question span:last-child {
      transform: rotate(45deg);
    }

    .links-panel {
      border-radius: 28px;
      padding: 24px;
      background: rgba(255, 255, 255, 0.76);
      border: 1px solid rgba(188, 218, 233, 0.86);
    }

    .link-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .link-cloud a {
      text-decoration: none;
      color: #15334c;
      background: #eef8fd;
      border: 1px solid #d7ecf5;
      border-radius: 999px;
      padding: 9px 12px;
      font-size: 13px;
      font-weight: 750;
      transition: background 0.2s ease, transform 0.2s ease;
    }

    .link-cloud a:hover {
      background: #dff2fb;
      transform: translateY(-2px);
    }

    .site-footer {
      margin-top: 18px;
      background: #102f49;
      color: #eaf6fb;
      border-top: 1px solid #1f4c6d;
    }

    .footer-inner {
      padding: 28px 0;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .footer-brand .logo-mark {
      box-shadow: none;
    }

    .footer-inner p {
      margin: 4px 0 0;
      color: #bed5e2;
      font-size: 13px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .footer-links a {
      color: #eaf6fb;
      text-decoration: none;
      font-size: 13px;
      font-weight: 700;
    }

    .footer-links a:hover {
      color: #9de4ff;
    }

    .reveal {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    @keyframes drift {
      from {
        transform: translate3d(-12px, 0, 0) scale(1);
      }
      to {
        transform: translate3d(12px, -8px, 0) scale(1.05);
      }
    }

    @media (max-width: 920px) {
      .menu-toggle {
        display: inline-flex;
      }

      .nav {
        flex-wrap: wrap;
        min-height: 66px;
      }

      .nav-links {
        display: none;
        width: 100%;
        order: 3;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 0 0 14px;
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        background: rgba(255, 255, 255, 0.76);
        border: 1px solid rgba(212, 232, 241, 0.86);
      }

      .nav-action {
        display: none;
      }

      .hero-grid,
      .solution-wrap,
      .contact-layout {
        grid-template-columns: 1fr;
      }

      .service-grid,
      .assurance-grid,
      .policy-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
      }
    }

    @media (max-width: 640px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .hero {
        padding-top: 34px;
      }

      .quick-facts,
      .service-grid,
      .assurance-grid,
      .policy-list,
      .qr-grid {
        grid-template-columns: 1fr;
      }

      .phone-showcase {
        grid-template-columns: 1fr;
      }

      .phone-card.large {
        grid-row: auto;
      }

      .info-row {
        grid-template-columns: 1fr;
        gap: 4px;
      }

      .footer-inner {
        grid-template-columns: 1fr;
      }

      .footer-links {
        justify-content: flex-start;
      }
    }