:root {
      --bg: #eef4f6;
      --bg-soft: #f8fbfb;
      --panel: rgba(255, 255, 255, 0.86);
      --panel-strong: #ffffff;
      --text: #1c2a32;
      --muted: #5f7078;
      --line: #d9e5e8;
      --primary: #246b7a;
      --primary-dark: #164c59;
      --accent: #9ebfc7;
      --ice: #dcecef;
      --shadow: 0 18px 50px rgba(40, 78, 88, 0.12);
      --radius-lg: 28px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --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% 8%, rgba(192, 219, 224, 0.78), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(220, 236, 239, 0.9), transparent 34%),
        linear-gradient(180deg, #eef5f6 0%, #f7faf9 46%, #eef4f6 100%);
      line-height: 1.72;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    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;
      backdrop-filter: blur(18px);
      background: rgba(245, 250, 250, 0.86);
      border-bottom: 1px solid rgba(196, 215, 219, 0.7);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: 0.03em;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: linear-gradient(135deg, #2b7c8d, #88b7c0);
      box-shadow: 0 10px 26px rgba(36, 107, 122, 0.24);
      font-size: 22px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      color: #33464e;
      font-size: 15px;
    }

    .nav-links a {
      padding: 10px 12px;
      border-radius: 999px;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .nav-links a:hover {
      background: rgba(36, 107, 122, 0.09);
      color: var(--primary-dark);
      transform: translateY(-1px);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 10px 16px;
      border-radius: 999px;
      color: #ffffff;
      background: var(--primary);
      box-shadow: 0 12px 28px rgba(36, 107, 122, 0.18);
      white-space: nowrap;
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .nav-cta:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      color: var(--primary-dark);
      border-radius: 14px;
      min-width: 44px;
      min-height: 44px;
      font-size: 22px;
      cursor: pointer;
    }

    main {
      position: relative;
    }

    .hero {
      padding: 72px 0 44px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
      gap: 28px;
      align-items: stretch;
    }

    .hero-copy {
      padding: clamp(28px, 5vw, 54px);
      background: linear-gradient(135deg, rgba(255,255,255,0.92), rgba(235,246,248,0.86));
      border: 1px solid rgba(202, 220, 224, 0.84);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      right: -80px;
      top: -80px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(158, 191, 199, 0.24);
      pointer-events: none;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      padding: 7px 12px;
      border: 1px solid rgba(36, 107, 122, 0.18);
      border-radius: 999px;
      color: var(--primary-dark);
      background: rgba(255,255,255,0.72);
      font-size: 14px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 5px rgba(36, 107, 122, 0.12);
    }

    h1 {
      margin: 0;
      font-size: clamp(34px, 6vw, 58px);
      line-height: 1.12;
      letter-spacing: -0.04em;
      color: #14242b;
    }

    .hero-copy p {
      max-width: 680px;
      margin: 20px 0 0;
      color: var(--muted);
      font-size: clamp(16px, 2.2vw, 18px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 12px 18px;
      border-radius: 15px;
      font-weight: 750;
      border: 1px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn-primary {
      color: #ffffff;
      background: linear-gradient(135deg, var(--primary), #4b92a0);
      box-shadow: 0 14px 28px rgba(36, 107, 122, 0.22);
    }

    .btn-secondary {
      color: var(--primary-dark);
      background: rgba(255,255,255,0.82);
      border-color: rgba(36, 107, 122, 0.18);
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(36, 107, 122, 0.16);
    }

    .hero-card {
      padding: 18px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.74);
      border: 1px solid rgba(202, 220, 224, 0.9);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .phone-shot {
      aspect-ratio: 4 / 3;
      border-radius: 20px;
      overflow: hidden;
      background: #e7f0f2;
      border: 1px solid rgba(198, 218, 222, 0.86);
    }

    .phone-shot:first-child {
      grid-column: 1 / -1;
      aspect-ratio: 16 / 9;
    }

    .phone-shot img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .hero-note {
      padding: 18px;
      border-radius: 20px;
      background: linear-gradient(135deg, #f9fcfc, #e8f3f5);
      border: 1px solid rgba(202, 220, 224, 0.86);
    }

    .hero-note strong {
      display: block;
      margin-bottom: 6px;
      color: var(--primary-dark);
      font-size: 18px;
    }

    .hero-note span {
      display: block;
      color: var(--muted);
      font-size: 14px;
    }

    .section {
      padding: 42px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 22px;
    }

    .section-kicker {
      margin: 0 0 6px;
      color: var(--primary);
      font-weight: 800;
      font-size: 14px;
      letter-spacing: 0.08em;
    }

    h2 {
      margin: 0;
      font-size: clamp(25px, 4vw, 38px);
      line-height: 1.22;
      letter-spacing: -0.03em;
      color: #17272e;
    }

    .section-head p {
      margin: 0;
      max-width: 430px;
      color: var(--muted);
      font-size: 15px;
    }

    .toc {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 12px;
      margin-top: 8px;
    }

    .toc a {
      padding: 14px 16px;
      border-radius: 16px;
      background: rgba(255,255,255,0.76);
      border: 1px solid rgba(202, 220, 224, 0.82);
      color: var(--primary-dark);
      font-weight: 700;
      text-align: center;
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .toc a:hover {
      transform: translateY(-2px);
      background: #ffffff;
    }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .service-card {
      padding: 22px;
      min-height: 164px;
      border-radius: 22px;
      background: rgba(255,255,255,0.82);
      border: 1px solid rgba(204, 220, 224, 0.86);
      box-shadow: 0 12px 34px rgba(49, 82, 90, 0.08);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 42px rgba(49, 82, 90, 0.13);
      border-color: rgba(36, 107, 122, 0.22);
    }

    .service-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
      color: #192b32;
    }

    .service-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .policy-wrap {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
      gap: 20px;
      align-items: start;
    }

    .frost-panel {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(255,255,255,0.92), rgba(232,244,246,0.72));
      border: 1px solid rgba(202, 220, 224, 0.9);
      box-shadow: var(--shadow);
    }

    .frost-panel h3 {
      margin: 0 0 12px;
      font-size: 23px;
      color: var(--primary-dark);
    }

    .frost-panel p {
      margin: 0;
      color: var(--muted);
    }

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

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: #2b3d45;
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 auto;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: var(--primary);
      font-size: 13px;
      margin-top: 3px;
    }

    .policy-table {
      overflow: hidden;
      border-radius: 22px;
      border: 1px solid rgba(202, 220, 224, 0.92);
      background: rgba(255,255,255,0.86);
      box-shadow: 0 12px 36px rgba(49, 82, 90, 0.08);
    }

    .policy-row {
      display: grid;
      grid-template-columns: 140px 1fr;
      gap: 0;
      border-bottom: 1px solid rgba(202, 220, 224, 0.78);
    }

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

    .policy-name {
      padding: 16px;
      background: rgba(232, 244, 246, 0.82);
      color: var(--primary-dark);
      font-weight: 800;
    }

    .policy-desc {
      padding: 16px;
      color: #35484f;
    }

    .flow {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      counter-reset: step;
    }

    .flow-card {
      position: relative;
      padding: 24px 20px;
      border-radius: 22px;
      background: #ffffff;
      border: 1px solid rgba(202, 220, 224, 0.86);
      box-shadow: 0 12px 32px rgba(49, 82, 90, 0.08);
      counter-increment: step;
    }

    .flow-card::before {
      content: counter(step);
      width: 38px;
      height: 38px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      margin-bottom: 14px;
      color: #ffffff;
      background: linear-gradient(135deg, var(--primary), #88b7c0);
      font-weight: 900;
    }

    .flow-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
    }

    .flow-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
      gap: 20px;
      align-items: stretch;
    }

    .contact-card {
      padding: 28px;
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,0.88);
      border: 1px solid rgba(202, 220, 224, 0.88);
      box-shadow: var(--shadow);
    }

    .info-list {
      display: grid;
      gap: 14px;
      margin-top: 18px;
    }

    .info-item {
      display: grid;
      grid-template-columns: 92px 1fr;
      gap: 12px;
      padding: 14px;
      border-radius: 16px;
      background: rgba(238, 246, 247, 0.78);
      border: 1px solid rgba(202, 220, 224, 0.74);
    }

    .info-item b {
      color: var(--primary-dark);
    }

    .info-item span,
    .info-item a {
      color: #2f4249;
      word-break: break-word;
    }

    .qr-box {
      display: grid;
      gap: 16px;
    }

    .qr-image {
      padding: 14px;
      border-radius: 24px;
      background: #ffffff;
      border: 1px solid rgba(202, 220, 224, 0.86);
      box-shadow: 0 12px 30px rgba(49, 82, 90, 0.08);
    }

    .qr-image img {
      width: 100%;
      border-radius: 16px;
      background: #eef4f6;
    }

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

    .faq-item {
      border-radius: 20px;
      background: rgba(255,255,255,0.84);
      border: 1px solid rgba(202, 220, 224, 0.86);
      overflow: hidden;
      box-shadow: 0 10px 28px rgba(49, 82, 90, 0.06);
    }

    .faq-question {
      width: 100%;
      min-height: 58px;
      padding: 16px 18px;
      border: 0;
      background: transparent;
      color: #192b32;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      font: inherit;
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

    .faq-question span {
      flex: 1;
    }

    .faq-question::after {
      content: "+";
      flex: 0 0 auto;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--primary-dark);
      background: rgba(36, 107, 122, 0.1);
      font-size: 20px;
      transition: transform 0.2s ease;
    }

    .faq-item.open .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.28s ease;
    }

    .faq-answer p {
      margin: 0;
      padding: 0 18px 18px;
      color: var(--muted);
    }

    .link-panel {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, rgba(255,255,255,0.88), rgba(232,244,246,0.72));
      border: 1px solid rgba(202, 220, 224, 0.88);
      box-shadow: var(--shadow);
    }

    .link-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      margin-top: 16px;
    }

    .link-grid a {
      padding: 13px 14px;
      border-radius: 14px;
      color: #264149;
      background: rgba(255,255,255,0.75);
      border: 1px solid rgba(202, 220, 224, 0.72);
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .link-grid a:hover {
      transform: translateY(-2px);
      background: #ffffff;
      color: var(--primary-dark);
    }

    .site-footer {
      margin-top: 18px;
      padding: 28px 0;
      background: #e2edf0;
      border-top: 1px solid #cbdde2;
      color: #243941;
    }

    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--primary-dark);
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
      color: #37515a;
      font-size: 14px;
    }

    .footer-links a {
      color: #37515a;
    }

    .footer-links a:hover {
      color: var(--primary-dark);
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.55s ease, transform 0.55s ease;
    }

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

    @media (max-width: 960px) {
      .menu-toggle {
        display: inline-grid;
        place-items: center;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border-radius: 20px;
        background: rgba(255,255,255,0.96);
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

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

      .nav-links a {
        text-align: center;
      }

      .nav-cta {
        width: 100%;
      }

      .hero {
        padding-top: 38px;
      }

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

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

      .flow {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .toc {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .section-head {
        display: block;
      }

      .section-head p {
        margin-top: 10px;
      }
    }

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

      .nav {
        min-height: 66px;
      }

      .nav-links {
        top: 66px;
        left: 12px;
        right: 12px;
      }

      .brand span:last-child {
        display: none;
      }

      .hero-copy,
      .contact-card,
      .frost-panel,
      .link-panel {
        padding: 22px;
        border-radius: 22px;
      }

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

      .phone-shot:first-child {
        aspect-ratio: 4 / 3;
      }

      .service-grid,
      .flow,
      .toc,
      .link-grid {
        grid-template-columns: 1fr;
      }

      .policy-row {
        grid-template-columns: 1fr;
      }

      .policy-name,
      .policy-desc {
        padding: 14px;
      }

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

      .footer-inner {
        align-items: flex-start;
        flex-direction: column;
      }

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

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *,
      *::before,
      *::after {
        animation: none !important;
        transition: none !important;
      }

      .reveal {
        opacity: 1;
        transform: none;
      }
    }