:root {
      --bg: #f4f7fb;
      --panel: #ffffff;
      --panel-soft: #eef3f9;
      --ink: #111827;
      --muted: #5d6675;
      --line: #d8e0ea;
      --blue: #0b5cff;
      --cyan: #00a8c8;
      --steel: #27364a;
      --orange: #ff8a3d;
      --shadow: 0 18px 45px rgba(29, 45, 70, 0.11);
      --radius-lg: 26px;
      --radius-md: 18px;
      --container: 1160px;
    }

    * {
      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(--ink);
      background:
        radial-gradient(circle at 8% 5%, rgba(11, 92, 255, 0.12), transparent 28%),
        radial-gradient(circle at 92% 18%, rgba(0, 168, 200, 0.13), transparent 30%),
        linear-gradient(180deg, #f8fbff 0%, #eef3f9 46%, #f7f9fc 100%);
      line-height: 1.65;
      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: 50;
      background: rgba(248, 251, 255, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(216, 224, 234, 0.8);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex: 0 0 auto;
      font-weight: 800;
      letter-spacing: 0.02em;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: linear-gradient(135deg, #0b5cff 0%, #111827 100%);
      box-shadow: 0 10px 25px rgba(11, 92, 255, 0.28);
      font-size: 22px;
    }

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

    .brand-name strong {
      font-size: 17px;
    }

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

    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      color: #243044;
      font-size: 14px;
      font-weight: 650;
    }

    .nav-links a {
      position: relative;
      padding: 8px 0;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 3px;
      width: 0;
      height: 2px;
      background: var(--blue);
      transition: width 0.25s ease;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 18px;
      border-radius: 999px;
      background: #101b2e;
      color: #ffffff;
      font-weight: 750;
      font-size: 14px;
      box-shadow: 0 12px 24px rgba(16, 27, 46, 0.18);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      white-space: nowrap;
    }

    .nav-action:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 30px rgba(16, 27, 46, 0.24);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      color: var(--ink);
      border-radius: 12px;
      width: 44px;
      height: 44px;
      font-size: 20px;
      cursor: pointer;
    }

    main {
      padding-top: 26px;
    }

    section {
      scroll-margin-top: 92px;
    }

    .hero {
      padding: 28px 0 36px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
      gap: 26px;
      align-items: stretch;
    }

    .hero-copy {
      position: relative;
      padding: clamp(30px, 5vw, 54px);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(255,255,255,0.96), rgba(237,244,252,0.92)),
        linear-gradient(135deg, rgba(11, 92, 255, 0.09), transparent);
      border: 1px solid rgba(216, 224, 234, 0.9);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .hero-copy::before {
      content: "";
      position: absolute;
      right: -90px;
      top: -90px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(11, 92, 255, 0.18), transparent 70%);
      animation: floatGlow 7s ease-in-out infinite;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid #cbd8e7;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.72);
      color: #1e3d68;
      font-size: 13px;
      font-weight: 750;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--cyan);
      box-shadow: 0 0 0 5px rgba(0, 168, 200, 0.12);
    }

    h1 {
      margin: 0;
      font-size: clamp(32px, 5vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.05em;
      color: #0b1220;
    }

    .hero-lead {
      margin: 20px 0 0;
      max-width: 680px;
      color: #435066;
      font-size: clamp(16px, 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: 0 20px;
      border-radius: 14px;
      font-weight: 800;
      border: 1px solid transparent;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
      cursor: pointer;
    }

    .btn-primary {
      color: #ffffff;
      background: linear-gradient(135deg, #0b5cff, #00a8c8);
      box-shadow: 0 16px 28px rgba(11, 92, 255, 0.22);
    }

    .btn-secondary {
      color: #172033;
      background: #ffffff;
      border-color: #cfd9e6;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .hero-note {
      margin-top: 18px;
      color: #667085;
      font-size: 13px;
    }

    .device-panel {
      min-height: 100%;
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, #142033, #28384e);
      color: #ffffff;
      padding: 22px;
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .device-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(255,255,255,0.07) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,0.06) 1px, transparent 1px);
      background-size: 28px 28px;
      opacity: 0.32;
    }

    .device-panel-inner {
      position: relative;
      display: grid;
      gap: 16px;
      height: 100%;
      align-content: space-between;
    }

    .phone-stack {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      align-items: stretch;
    }

    .phone-frame {
      border-radius: 22px;
      padding: 8px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .phone-frame:first-child {
      grid-row: span 2;
    }

    .phone-frame img {
      width: 100%;
      border-radius: 16px;
      aspect-ratio: 4 / 5;
      object-fit: cover;
      background: #e8edf5;
    }

    .device-label {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: center;
      padding: 16px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.18);
      backdrop-filter: blur(8px);
    }

    .device-label strong {
      display: block;
      font-size: 18px;
    }

    .device-label span {
      display: block;
      color: rgba(255,255,255,0.76);
      font-size: 13px;
      margin-top: 3px;
    }

    .section-block {
      padding: 34px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 22px;
      margin-bottom: 18px;
    }

    .section-kicker {
      margin: 0 0 6px;
      color: var(--blue);
      font-weight: 850;
      font-size: 13px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    h2 {
      margin: 0;
      font-size: clamp(24px, 3vw, 36px);
      line-height: 1.22;
      letter-spacing: -0.035em;
      color: #121a2a;
    }

    .section-desc {
      margin: 0;
      max-width: 470px;
      color: var(--muted);
      font-size: 15px;
    }

    .price-strip {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 18px;
    }

    .price-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 14px 34px rgba(29, 45, 70, 0.08);
    }

    .price-card h3,
    .service-card h3,
    .solution-card h3,
    .policy-card h3,
    .contact-card h3,
    .faq-item h3 {
      margin: 0;
      color: #152033;
      font-size: 19px;
      line-height: 1.32;
    }

    .price-list {
      display: grid;
      gap: 12px;
      margin-top: 16px;
    }

    .price-row {
      display: grid;
      grid-template-columns: 120px 1fr;
      gap: 14px;
      padding: 14px;
      border-radius: 15px;
      background: linear-gradient(90deg, #f5f8fc, #ffffff);
      border: 1px solid #e0e7f0;
    }

    .price-row strong {
      color: #0b5cff;
      white-space: nowrap;
    }

    .price-row span {
      color: #526071;
      font-size: 14px;
    }

    .alert-box {
      height: 100%;
      padding: 24px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(11, 92, 255, 0.08), rgba(0, 168, 200, 0.08)),
        #ffffff;
      border: 1px solid #cddbea;
      box-shadow: 0 14px 34px rgba(29, 45, 70, 0.08);
    }

    .alert-box p {
      margin: 12px 0 0;
      color: #4d596b;
    }

    .tag-line {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }

    .tag-line span {
      padding: 7px 10px;
      border-radius: 999px;
      background: #eaf1fa;
      color: #1c3b61;
      font-size: 13px;
      font-weight: 700;
    }

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

    .service-card {
      padding: 20px;
      border-radius: 20px;
      background: rgba(255,255,255,0.9);
      border: 1px solid var(--line);
      box-shadow: 0 12px 28px rgba(29, 45, 70, 0.07);
      transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: rgba(11, 92, 255, 0.38);
      box-shadow: 0 18px 38px rgba(29, 45, 70, 0.13);
    }

    .service-icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: #edf4ff;
      color: #0b5cff;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .service-card p,
    .solution-card p,
    .policy-card p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .solution-wrap {
      display: grid;
      grid-template-columns: 0.92fr 1.08fr;
      gap: 18px;
      align-items: start;
    }

    .process-panel {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #101b2e;
      color: #ffffff;
      box-shadow: var(--shadow);
    }

    .process-panel h3 {
      margin: 0;
      color: #ffffff;
      font-size: 21px;
    }

    .steps {
      display: grid;
      gap: 13px;
      margin-top: 18px;
    }

    .step {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 14px;
      border-radius: 16px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.12);
    }

    .step b {
      width: 30px;
      height: 30px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      border-radius: 10px;
      background: #ffffff;
      color: #0b5cff;
    }

    .step span {
      color: rgba(255,255,255,0.78);
      font-size: 14px;
    }

    .solution-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .solution-card {
      padding: 21px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 12px 28px rgba(29, 45, 70, 0.07);
    }

    .policy-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .policy-card {
      padding: 20px;
      border-radius: 20px;
      background:
        linear-gradient(180deg, #ffffff, #f4f8fd);
      border: 1px solid var(--line);
    }

    .policy-card strong {
      display: inline-block;
      margin-bottom: 8px;
      color: #0b5cff;
      font-size: 13px;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 0.82fr;
      gap: 18px;
      align-items: stretch;
    }

    .contact-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 14px 34px rgba(29, 45, 70, 0.08);
    }

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

    .info-item {
      display: grid;
      grid-template-columns: 86px 1fr;
      gap: 12px;
      padding: 13px 0;
      border-bottom: 1px solid #edf1f6;
    }

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

    .info-item b {
      color: #1b2a3e;
    }

    .info-item span,
    .info-item a {
      color: #526071;
      word-break: break-word;
    }

    .qr-panel {
      display: grid;
      gap: 14px;
      align-content: start;
    }

    .qr-box {
      padding: 20px;
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, #ffffff, #eef5ff);
      border: 1px solid #d6e2ef;
      box-shadow: 0 14px 34px rgba(29, 45, 70, 0.08);
    }

    .qr-box img {
      width: min(220px, 100%);
      margin: 16px auto 0;
      border-radius: 16px;
      background: #ffffff;
      border: 1px solid var(--line);
    }

    .map-link {
      color: #0066cc;
      font-weight: 800;
    }

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

    .faq-item {
      border-radius: 18px;
      background: #ffffff;
      border: 1px solid var(--line);
      overflow: hidden;
      box-shadow: 0 10px 24px rgba(29, 45, 70, 0.06);
    }

    .faq-button {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      text-align: left;
      cursor: pointer;
      color: var(--ink);
    }

    .faq-button span {
      font-size: 22px;
      color: var(--blue);
      transition: transform 0.2s ease;
    }

    .faq-content {
      display: none;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 15px;
    }

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

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

    .links-panel {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,0.78);
      border: 1px solid var(--line);
    }

    .links-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px 16px;
      margin-top: 12px;
    }

    .links-grid a {
      color: #315071;
      font-size: 14px;
      padding: 9px 0;
      border-bottom: 1px solid #e4eaf2;
    }

    .links-grid a:hover {
      color: var(--blue);
    }

    .site-footer {
      margin-top: 24px;
      background: #101b2e;
      color: #dce6f3;
      border-top: 1px solid #243249;
    }

    .footer-inner {
      padding: 26px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .footer-inner p {
      margin: 0;
      color: #dce6f3;
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 14px;
    }

    .footer-links a {
      color: #dce6f3;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

    @keyframes floatGlow {
      0%, 100% {
        transform: translate3d(0, 0, 0);
      }
      50% {
        transform: translate3d(-18px, 14px, 0);
      }
    }

    @media (max-width: 980px) {
      .nav {
        min-height: 66px;
      }

      .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;
        gap: 2px;
        padding: 14px;
        border-radius: 18px;
        background: #ffffff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

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

      .nav-links a {
        padding: 12px 10px;
      }

      .nav-action {
        display: none;
      }

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

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

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

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

      main {
        padding-top: 14px;
      }

      .hero {
        padding-top: 18px;
      }

      .hero-copy,
      .device-panel,
      .price-card,
      .alert-box,
      .contact-card,
      .qr-box,
      .links-panel {
        border-radius: 20px;
      }

      .hero-actions {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .phone-stack,
      .service-grid,
      .solution-grid,
      .policy-grid,
      .links-grid {
        grid-template-columns: 1fr;
      }

      .phone-frame:first-child {
        grid-row: auto;
      }

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

      .section-block {
        padding: 26px 0;
      }

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