:root {
      --bg: #ffffff;
      --soft: #f7f8fb;
      --soft-2: #f1f4f8;
      --text: #1b2430;
      --muted: #5d6878;
      --line: #e6eaf0;
      --brand: #1768e8;
      --brand-dark: #0f4fb4;
      --warm: #fff7ed;
      --radius: 24px;
      --shadow: 0 18px 50px rgba(24, 42, 72, 0.08);
      --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(--text);
      background:
        radial-gradient(circle at 6% 8%, rgba(23, 104, 232, 0.08), transparent 30%),
        linear-gradient(180deg, #ffffff 0%, #f8fafc 46%, #ffffff 100%);
      line-height: 1.7;
    }

    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;
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(230, 234, 240, 0.9);
    }

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

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      color: #ffffff;
      background: linear-gradient(135deg, var(--brand), #59a7ff);
      box-shadow: 0 10px 24px rgba(23, 104, 232, 0.25);
      font-size: 22px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 6px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      padding: 10px 12px;
      border-radius: 999px;
      color: #344054;
      font-size: 14px;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-links a:hover {
      background: var(--soft-2);
      color: var(--brand-dark);
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 18px;
      border-radius: 999px;
      background: var(--text);
      color: #ffffff;
      font-size: 14px;
      font-weight: 700;
      box-shadow: 0 12px 30px rgba(27, 36, 48, 0.14);
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: #ffffff;
      color: var(--text);
      font-size: 22px;
      cursor: pointer;
    }

    main {
      overflow: hidden;
    }

    section {
      padding: 58px 0;
    }

    .hero {
      padding: 58px 0 48px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.03fr) minmax(320px, 0.97fr);
      align-items: center;
      gap: 42px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0 0 18px;
      padding: 7px 12px;
      border: 1px solid #dbe7ff;
      border-radius: 999px;
      background: #f4f8ff;
      color: var(--brand-dark);
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--brand);
      box-shadow: 0 0 0 5px rgba(23, 104, 232, 0.12);
    }

    h1 {
      margin: 0;
      max-width: 680px;
      color: #101828;
      font-size: clamp(34px, 6vw, 62px);
      line-height: 1.08;
      letter-spacing: -0.045em;
    }

    .hero-lead {
      max-width: 620px;
      margin: 20px 0 0;
      color: var(--muted);
      font-size: 17px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 750;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

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

    .btn-primary {
      background: var(--brand);
      color: #ffffff;
      box-shadow: 0 16px 34px rgba(23, 104, 232, 0.22);
    }

    .btn-primary:hover {
      background: var(--brand-dark);
    }

    .btn-outline {
      border-color: var(--line);
      background: #ffffff;
      color: var(--text);
    }

    .hero-note {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 32px;
      max-width: 650px;
    }

    .note-item {
      padding: 14px 16px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.76);
      color: #344054;
      font-size: 14px;
    }

    .visual-card {
      position: relative;
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: 32px;
      background: linear-gradient(145deg, #ffffff, #f6f9ff);
      box-shadow: var(--shadow);
    }

    .visual-card::before {
      content: "";
      position: absolute;
      inset: -18px -10px auto auto;
      width: 118px;
      height: 118px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(23, 104, 232, 0.16), rgba(255, 168, 76, 0.2));
      filter: blur(2px);
      z-index: -1;
      animation: floatSoft 6s ease-in-out infinite;
    }

    .visual-frame {
      overflow: hidden;
      border-radius: 24px;
      background: #eef3fa;
      aspect-ratio: 4 / 3;
    }

    .visual-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: 16px;
    }

    .visual-meta {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .status-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 14px;
      border-radius: 18px;
      background: #ffffff;
      border: 1px solid var(--line);
      color: #344054;
      font-size: 14px;
    }

    .status-row strong {
      color: var(--text);
    }

    .section-head {
      display: grid;
      gap: 10px;
      max-width: 760px;
      margin-bottom: 28px;
    }

    .section-kicker {
      color: var(--brand-dark);
      font-size: 14px;
      font-weight: 800;
    }

    h2 {
      margin: 0;
      color: #101828;
      font-size: clamp(26px, 4vw, 42px);
      line-height: 1.18;
      letter-spacing: -0.028em;
    }

    .section-desc {
      margin: 0;
      color: var(--muted);
      font-size: 16px;
    }

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

    .service-card {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.88);
      box-shadow: 0 12px 34px rgba(24, 42, 72, 0.045);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: #bfd4ff;
      box-shadow: 0 18px 45px rgba(23, 104, 232, 0.1);
    }

    .service-icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      margin-bottom: 16px;
      border-radius: 14px;
      background: #edf4ff;
      color: var(--brand-dark);
      font-weight: 900;
    }

    h3 {
      margin: 0 0 8px;
      color: #101828;
      font-size: 18px;
      line-height: 1.35;
    }

    .service-card p,
    .solution-copy p,
    .guarantee-card p,
    .contact-card p,
    .faq-answer p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .solution-wrap {
      display: grid;
      grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
      gap: 24px;
      align-items: stretch;
    }

    .solution-copy {
      padding: 28px;
      border-radius: 30px;
      background: var(--warm);
      border: 1px solid #ffe3c0;
    }

    .solution-copy ul {
      display: grid;
      gap: 12px;
      margin: 22px 0 0;
      padding: 0;
      list-style: none;
    }

    .solution-copy li {
      padding: 12px 14px;
      border-radius: 16px;
      background: #ffffff;
      color: #3a2d1f;
      border: 1px solid #ffe8ca;
      font-size: 15px;
    }

    .process-list {
      display: grid;
      gap: 14px;
    }

    .process-item {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      padding: 18px;
      border-radius: 22px;
      border: 1px solid var(--line);
      background: #ffffff;
    }

    .process-index {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--text);
      color: #ffffff;
      font-weight: 800;
      font-size: 14px;
    }

    .process-item p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 15px;
    }

    .guarantee {
      background: linear-gradient(180deg, rgba(247, 248, 251, 0.75), rgba(255, 255, 255, 0.72));
    }

    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .guarantee-card {
      padding: 22px;
      border-radius: 24px;
      background: #ffffff;
      border: 1px solid var(--line);
    }

    .guarantee-card span {
      display: inline-flex;
      margin-bottom: 12px;
      color: var(--brand-dark);
      font-weight: 850;
      font-size: 14px;
    }

    .contact-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
      gap: 24px;
      align-items: stretch;
    }

    .contact-panel {
      padding: 28px;
      border-radius: 30px;
      border: 1px solid var(--line);
      background: #ffffff;
      box-shadow: var(--shadow);
    }

    .contact-list {
      display: grid;
      gap: 12px;
      margin-top: 22px;
    }

    .contact-card {
      padding: 16px;
      border-radius: 18px;
      background: var(--soft);
      border: 1px solid var(--line);
    }

    .contact-card strong {
      display: block;
      margin-bottom: 4px;
      color: #101828;
    }

    .phone-image {
      overflow: hidden;
      border-radius: 30px;
      border: 1px solid var(--line);
      background: #f4f7fb;
      min-height: 100%;
      display: grid;
      align-items: center;
    }

    .phone-image img {
      width: 100%;
      object-fit: contain;
      padding: 18px;
    }

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 20px;
      background: #ffffff;
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: #101828;
      text-align: left;
      font: inherit;
      font-weight: 800;
      cursor: pointer;
    }

    .faq-question span {
      color: var(--brand);
      font-size: 20px;
      transition: transform 0.2s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      transition: max-height 0.28s ease, padding 0.28s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 160px;
      padding: 0 20px 18px;
    }

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

    .link-strip {
      padding: 30px 0 54px;
    }

    .link-box {
      padding: 22px;
      border-radius: 26px;
      background: #f7f9fc;
      border: 1px solid var(--line);
    }

    .link-box h2 {
      font-size: 24px;
      margin-bottom: 12px;
    }

    .link-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .link-list a {
      display: inline-flex;
      padding: 9px 12px;
      border-radius: 999px;
      background: #ffffff;
      border: 1px solid var(--line);
      color: #344054;
      font-size: 14px;
      transition: color 0.2s ease, border-color 0.2s ease;
    }

    .link-list a:hover {
      color: var(--brand-dark);
      border-color: #bdd1ff;
    }

    .site-footer {
      background: #111827;
      color: #f8fafc;
      padding: 28px 0;
    }

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

    .footer-inner p {
      margin: 0;
      color: #d1d5db;
      font-size: 14px;
    }

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

    .footer-links a {
      color: #f8fafc;
      font-size: 14px;
    }

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

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

    @keyframes floatSoft {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(12px);
      }
    }

    @media (max-width: 980px) {
      .nav-links,
      .nav-action {
        display: none;
      }

      .menu-toggle {
        display: inline-grid;
        place-items: center;
      }

      .nav-links.open {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 76px;
        display: grid;
        gap: 6px;
        padding: 14px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: #ffffff;
        box-shadow: var(--shadow);
      }

      .nav-links.open a {
        justify-content: center;
      }

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

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

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

      section {
        padding: 42px 0;
      }

      .hero {
        padding-top: 38px;
      }

      .hero-note,
      .service-grid,
      .guarantee-grid {
        grid-template-columns: 1fr;
      }

      .hero-actions {
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }

      .visual-card,
      .contact-panel,
      .solution-copy {
        border-radius: 24px;
      }

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