:root {
      --bg: #fffaf2;
      --bg-soft: #fff3df;
      --card: #ffffff;
      --text: #233044;
      --muted: #657085;
      --line: #eadfce;
      --brand: #ff7a2f;
      --brand-dark: #d95b17;
      --accent: #18a6a8;
      --accent-soft: #e4fbfa;
      --yellow: #ffd166;
      --shadow: 0 18px 46px rgba(94, 65, 28, .12);
      --radius: 24px;
      --container: 1140px;
    }

    * {
      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 8% 8%, rgba(255, 209, 102, .30), transparent 28%),
        radial-gradient(circle at 94% 12%, rgba(24, 166, 168, .16), transparent 30%),
        linear-gradient(180deg, #fff9ef 0%, #fffdf9 48%, #f8fbfb 100%);
      line-height: 1.7;
    }

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

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

    .container {
      width: min(var(--container), calc(100% - 36px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 250, 242, .88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(234, 223, 206, .78);
    }

    .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;
      letter-spacing: .02em;
      white-space: nowrap;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 23px;
      background: linear-gradient(135deg, var(--brand), #ffb14a);
      box-shadow: 0 10px 24px rgba(255, 122, 47, .28);
    }

    .brand small {
      display: block;
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
      margin-top: -3px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 4px;
    }

    .nav-links a {
      padding: 9px 12px;
      border-radius: 999px;
      color: #374256;
      font-size: 14px;
      font-weight: 650;
      transition: background .2s ease, color .2s ease, transform .2s ease;
    }

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

    .nav-call {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 15px;
      border-radius: 999px;
      color: #fff;
      background: linear-gradient(135deg, var(--accent), #29c3bd);
      font-weight: 800;
      box-shadow: 0 12px 26px rgba(24, 166, 168, .20);
    }

    .menu-btn {
      display: none;
      border: 0;
      background: #fff;
      color: var(--text);
      border-radius: 14px;
      padding: 10px 12px;
      font-weight: 800;
      box-shadow: 0 8px 20px rgba(48, 42, 30, .08);
    }

    main {
      overflow: hidden;
    }

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

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
      gap: 32px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid rgba(255, 122, 47, .24);
      border-radius: 999px;
      color: var(--brand-dark);
      background: rgba(255, 255, 255, .72);
      font-size: 13px;
      font-weight: 800;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(24, 166, 168, .13);
    }

    h1 {
      margin: 18px 0 14px;
      font-size: clamp(32px, 7vw, 58px);
      line-height: 1.08;
      letter-spacing: -.04em;
      color: #192335;
    }

    .hero-lead {
      max-width: 660px;
      margin: 0;
      color: #526074;
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 15px;
      font-weight: 800;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }

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

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--brand), #ff9d3f);
      box-shadow: 0 14px 30px rgba(255, 122, 47, .24);
    }

    .btn-secondary {
      color: #1f3340;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 12px 24px rgba(70, 56, 36, .07);
    }

    .trust-strip {
      margin-top: 22px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      max-width: 650px;
    }

    .trust-item {
      padding: 12px 14px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid rgba(234, 223, 206, .82);
      border-radius: 18px;
      color: #425066;
      font-size: 13px;
      font-weight: 700;
    }

    .visual-card {
      position: relative;
      padding: 16px;
      border-radius: 32px;
      background: linear-gradient(145deg, #ffffff, #fff2df);
      box-shadow: var(--shadow);
      border: 1px solid rgba(255, 255, 255, .9);
      animation: floatCard 5.5s ease-in-out infinite;
    }

    .phone-frame {
      position: relative;
      overflow: hidden;
      border-radius: 26px;
      background: #f7efe2;
      aspect-ratio: 4 / 3;
    }

    .phone-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: 10px;
    }

    .notice-pill {
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 18px;
      padding: 13px 15px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .92);
      color: #2b3747;
      box-shadow: 0 12px 30px rgba(44, 42, 36, .13);
      display: flex;
      align-items: center;
      gap: 11px;
      font-size: 14px;
      font-weight: 750;
    }

    .notice-pill span {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--accent);
      flex: 0 0 auto;
    }

    .section {
      padding: 42px 0;
    }

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

    .section-kicker {
      margin: 0 0 6px;
      color: var(--brand-dark);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    h2 {
      margin: 0;
      font-size: clamp(25px, 4vw, 38px);
      line-height: 1.18;
      letter-spacing: -.03em;
      color: #1e293b;
    }

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

    .toc {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 14px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .74);
      border: 1px solid var(--line);
      box-shadow: 0 12px 30px rgba(76, 57, 28, .06);
    }

    .toc a {
      padding: 9px 13px;
      border-radius: 999px;
      color: #435168;
      background: #fff8ed;
      font-weight: 750;
      font-size: 14px;
      transition: transform .2s ease, background .2s ease, color .2s ease;
    }

    .toc a:hover {
      transform: translateY(-2px);
      color: #fff;
      background: var(--brand);
    }

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

    .service-card {
      padding: 20px;
      border-radius: 22px;
      background: var(--card);
      border: 1px solid rgba(234, 223, 206, .8);
      box-shadow: 0 12px 28px rgba(72, 56, 32, .07);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: rgba(255, 122, 47, .32);
      box-shadow: 0 18px 38px rgba(72, 56, 32, .11);
    }

    .icon {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      margin-bottom: 12px;
      background: var(--accent-soft);
      color: #0c7778;
      font-weight: 900;
    }

    .service-card:nth-child(2n) .icon {
      background: #fff0dd;
      color: var(--brand-dark);
    }

    h3 {
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.35;
      color: #1f2937;
    }

    .service-card p,
    .solution-card p,
    .warranty-card p,
    .contact-card p,
    .case-box p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .solution-wrap {
      display: grid;
      grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
      gap: 18px;
      align-items: start;
    }

    .case-box {
      padding: 24px;
      border-radius: 26px;
      background: linear-gradient(145deg, #fff, #fff5e7);
      border: 1px solid rgba(234, 223, 206, .9);
      box-shadow: var(--shadow);
    }

    .case-box img {
      margin-top: 18px;
      border-radius: 22px;
      background: #fff;
      border: 1px solid var(--line);
      object-fit: contain;
      width: 100%;
    }

    .steps {
      display: grid;
      gap: 12px;
    }

    .solution-card {
      display: grid;
      grid-template-columns: 44px 1fr;
      gap: 14px;
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, .82);
      border: 1px solid rgba(234, 223, 206, .85);
    }

    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--brand), var(--yellow));
      font-weight: 900;
    }

    .warranty-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }

    .warranty-card {
      padding: 20px;
      border-radius: 22px;
      background: #ffffff;
      border: 1px solid rgba(234, 223, 206, .9);
      box-shadow: 0 12px 26px rgba(56, 52, 44, .06);
    }

    .warranty-card strong {
      display: inline-flex;
      margin-bottom: 8px;
      color: #162334;
      font-size: 16px;
    }

    .contact-panel {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 290px;
      gap: 18px;
      padding: 22px;
      border-radius: 30px;
      background: linear-gradient(135deg, #ffffff, #eefdfb);
      border: 1px solid rgba(24, 166, 168, .16);
      box-shadow: var(--shadow);
      align-items: start;
    }

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

    .contact-card {
      padding: 16px;
      border-radius: 20px;
      background: rgba(255, 255, 255, .78);
      border: 1px solid rgba(218, 234, 232, .95);
    }

    .contact-card a {
      color: #0066cc;
      font-weight: 800;
    }

    .qr-card {
      padding: 16px;
      border-radius: 22px;
      background: #fff;
      border: 1px solid rgba(234, 223, 206, .9);
      text-align: center;
    }

    .qr-card img {
      width: 190px;
      margin: 0 auto 12px;
      border-radius: 16px;
      border: 1px solid var(--line);
    }

    .qr-card p {
      margin: 0;
      color: #38465b;
      font-size: 14px;
      font-weight: 750;
    }

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

    .faq-item {
      border-radius: 22px;
      background: #fff;
      border: 1px solid rgba(234, 223, 206, .9);
      overflow: hidden;
      box-shadow: 0 10px 24px rgba(67, 57, 38, .05);
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: transparent;
      padding: 18px 20px;
      text-align: left;
      color: #1f2937;
      font-size: 16px;
      font-weight: 850;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      cursor: pointer;
    }

    .faq-question span:last-child {
      color: var(--brand);
      font-size: 22px;
      transition: transform .2s ease;
    }

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

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

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

    .links-box {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
      padding: 18px;
      border-radius: 24px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid var(--line);
    }

    .links-box a {
      padding: 12px 14px;
      border-radius: 16px;
      background: #fff;
      color: #365066;
      font-size: 14px;
      font-weight: 750;
      border: 1px solid rgba(234, 223, 206, .72);
      transition: transform .2s ease, color .2s ease;
    }

    .links-box a:hover {
      transform: translateY(-2px);
      color: var(--brand-dark);
    }

    .site-footer {
      margin-top: 14px;
      background: #182435;
      color: #eef4f8;
    }

    .footer-inner {
      padding: 28px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .footer-inner p {
      margin: 0;
      color: #c8d3dc;
      font-size: 14px;
    }

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

    .footer-links a {
      color: #ffffff;
      font-size: 14px;
      font-weight: 750;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity .6s ease, transform .6s ease;
    }

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

    @keyframes floatCard {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(-8px);
      }
    }

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

      .nav-links {
        position: absolute;
        left: 18px;
        right: 18px;
        top: 76px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 14px;
        border-radius: 22px;
        background: #ffffff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

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

      .nav-links a,
      .nav-call {
        justify-content: center;
        text-align: center;
      }

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

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

      .section-head {
        display: block;
      }

      .section-desc {
        margin-top: 8px;
      }
    }

    @media (max-width: 640px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .hero {
        padding-top: 34px;
      }

      .trust-strip,
      .service-grid,
      .warranty-grid,
      .links-box {
        grid-template-columns: 1fr;
      }

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

      .btn {
        width: 100%;
      }

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