:root {
      --wood: #5b3424;
      --wood-deep: #3f2419;
      --wood-soft: #8a5b3e;
      --gold: #c99a55;
      --cream: #fbf6ee;
      --paper: #fffaf3;
      --line: #eadcca;
      --ink: #241914;
      --muted: #735f51;
      --green: #5f7d58;
      --shadow: 0 18px 48px rgba(75, 43, 28, .12);
      --radius: 22px;
      --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% 10%, rgba(201, 154, 85, .16), transparent 28%),
        radial-gradient(circle at 92% 16%, rgba(138, 91, 62, .13), transparent 30%),
        linear-gradient(180deg, #fffaf2 0%, #f7efe4 45%, #fffaf4 100%);
      line-height: 1.7;
      overflow-x: hidden;
    }

    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: 20;
      background: rgba(255, 250, 243, .92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(91, 52, 36, .12);
    }

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

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--wood-deep);
      white-space: nowrap;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #fff;
      background:
        linear-gradient(145deg, #8a5b3e, #3f2419);
      box-shadow: 0 10px 22px rgba(63, 36, 25, .2);
      font-size: 22px;
      letter-spacing: .02em;
    }

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

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

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

    .nav-links {
      display: flex;
      align-items: center;
      gap: 20px;
      font-size: 14px;
      color: #4f382c;
      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;
      border-radius: 4px;
      background: var(--gold);
      transition: width .25s ease;
    }

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

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 0 16px;
      border-radius: 999px;
      background: var(--wood);
      color: #fff;
      font-weight: 700;
      box-shadow: 0 12px 26px rgba(91, 52, 36, .22);
      transition: transform .2s ease, box-shadow .2s ease;
      white-space: nowrap;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 32px rgba(91, 52, 36, .28);
    }

    .menu-btn {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: #fff7ec;
      color: var(--wood);
      font-size: 22px;
      cursor: pointer;
    }

    main {
      position: relative;
    }

    .hero {
      padding: 58px 0 38px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.06fr) minmax(300px, .94fr);
      gap: 36px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid rgba(201, 154, 85, .45);
      border-radius: 999px;
      background: rgba(255, 250, 243, .78);
      color: var(--wood);
      font-size: 13px;
      font-weight: 750;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--gold);
      box-shadow: 0 0 0 5px rgba(201, 154, 85, .16);
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(34px, 7vw, 58px);
      line-height: 1.08;
      letter-spacing: -.04em;
      color: var(--wood-deep);
    }

    .hero-lead {
      margin: 0;
      max-width: 650px;
      color: #594538;
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 13px;
      margin-top: 26px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 20px;
      border-radius: 14px;
      font-weight: 800;
      border: 1px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
      cursor: pointer;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--wood), var(--wood-deep));
      color: #fff;
      box-shadow: 0 16px 32px rgba(91, 52, 36, .22);
    }

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

    .btn-secondary {
      background: rgba(255, 255, 255, .72);
      color: var(--wood);
      border-color: rgba(91, 52, 36, .18);
    }

    .hero-notes {
      margin-top: 22px;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      max-width: 660px;
    }

    .note {
      padding: 12px 14px;
      border-radius: 16px;
      background: rgba(255, 255, 255, .58);
      border: 1px solid rgba(234, 220, 202, .9);
      color: #5a4336;
      font-size: 13px;
      font-weight: 700;
    }

    .hero-card {
      position: relative;
      padding: 18px;
      border-radius: 30px;
      background:
        linear-gradient(145deg, rgba(255, 250, 243, .94), rgba(249, 238, 224, .88));
      border: 1px solid rgba(201, 154, 85, .28);
      box-shadow: var(--shadow);
      overflow: hidden;
      animation: floatIn .7s ease both;
    }

    .hero-card::before {
      content: "";
      position: absolute;
      inset: 16px;
      border: 1px solid rgba(91, 52, 36, .1);
      border-radius: 24px;
      pointer-events: none;
    }

    .phone-frame {
      position: relative;
      z-index: 1;
      padding: 16px;
      display: grid;
      gap: 16px;
    }

    .phone-image {
      border-radius: 24px;
      overflow: hidden;
      background: #efe2d2;
      border: 1px solid rgba(91, 52, 36, .1);
      aspect-ratio: 4 / 3;
      display: grid;
      place-items: center;
    }

    .phone-image img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .diagnose-strip {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }

    .diagnose-item {
      padding: 14px;
      border-radius: 18px;
      background: #fffaf3;
      border: 1px solid var(--line);
    }

    .diagnose-item strong {
      display: block;
      color: var(--wood);
      font-size: 15px;
      margin-bottom: 4px;
    }

    .diagnose-item span {
      color: var(--muted);
      font-size: 13px;
    }

    .section {
      padding: 42px 0;
    }

    .section-head {
      display: grid;
      gap: 10px;
      margin-bottom: 24px;
      max-width: 760px;
    }

    .section-kicker {
      color: var(--wood-soft);
      font-size: 13px;
      font-weight: 850;
      letter-spacing: .12em;
      text-transform: uppercase;
    }

    h2 {
      margin: 0;
      font-size: clamp(26px, 4vw, 38px);
      line-height: 1.18;
      color: var(--wood-deep);
      letter-spacing: -.02em;
    }

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

    .service-band {
      border-radius: 28px;
      background: rgba(255, 250, 243, .78);
      border: 1px solid rgba(234, 220, 202, .95);
      box-shadow: 0 16px 42px rgba(91, 52, 36, .08);
      padding: 22px;
    }

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

    .service-card {
      padding: 20px;
      border-radius: 20px;
      background: linear-gradient(180deg, #fffefd, #fff5e8);
      border: 1px solid rgba(234, 220, 202, .95);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
      min-height: 152px;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 34px rgba(91, 52, 36, .12);
      border-color: rgba(201, 154, 85, .52);
    }

    .service-card .icon {
      width: 40px;
      height: 40px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: #f2e2cf;
      color: var(--wood);
      font-weight: 900;
      margin-bottom: 14px;
    }

    h3 {
      margin: 0 0 8px;
      color: var(--wood-deep);
      font-size: 18px;
      line-height: 1.35;
    }

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

    .solution-wrap {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 22px;
      align-items: start;
    }

    .solution-panel {
      border-radius: 28px;
      padding: 28px;
      background: linear-gradient(145deg, #6c422e, #3f2419);
      color: #fff;
      box-shadow: var(--shadow);
    }

    .solution-panel h2 {
      color: #fff7ec;
    }

    .solution-panel p {
      margin: 14px 0 0;
      color: #f3dfc9;
    }

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

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: #fff4e5;
      font-size: 14px;
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: rgba(201, 154, 85, .32);
      color: #fff;
      font-size: 13px;
      font-weight: 900;
      margin-top: 1px;
    }

    .solution-cards {
      display: grid;
      gap: 14px;
    }

    .solution-card {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 16px;
      align-items: start;
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 250, 243, .86);
      border: 1px solid var(--line);
    }

    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: #efe0ca;
      color: var(--wood);
      font-weight: 900;
    }

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

    .assurance-card {
      padding: 22px;
      border-radius: 24px;
      background: rgba(255, 255, 255, .7);
      border: 1px solid rgba(234, 220, 202, .95);
      box-shadow: 0 12px 34px rgba(91, 52, 36, .07);
    }

    .policy-tag {
      display: inline-flex;
      margin-bottom: 12px;
      padding: 5px 10px;
      border-radius: 999px;
      background: #f1e1cb;
      color: var(--wood);
      font-size: 12px;
      font-weight: 850;
    }

    .contact-card {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 22px;
      align-items: stretch;
      padding: 26px;
      border-radius: 30px;
      background:
        linear-gradient(135deg, rgba(255, 250, 243, .92), rgba(242, 226, 207, .78));
      border: 1px solid rgba(201, 154, 85, .34);
      box-shadow: var(--shadow);
    }

    .contact-info {
      display: grid;
      gap: 16px;
      align-content: start;
    }

    .info-line {
      padding: 16px 18px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid var(--line);
    }

    .info-line strong {
      display: block;
      color: var(--wood);
      margin-bottom: 4px;
    }

    .info-line span,
    .info-line a {
      color: #5b4638;
    }

    .qr-box {
      display: grid;
      gap: 14px;
      justify-items: center;
      text-align: center;
      padding: 20px;
      border-radius: 24px;
      background: #fffaf3;
      border: 1px solid var(--line);
    }

    .qr-box img {
      width: min(220px, 72vw);
      border-radius: 18px;
      border: 1px solid var(--line);
      background: #fff;
      padding: 8px;
    }

    .qr-box strong {
      color: var(--wood-deep);
      font-size: 18px;
    }

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

    .faq-item {
      border-radius: 20px;
      background: rgba(255, 250, 243, .86);
      border: 1px solid var(--line);
      overflow: hidden;
    }

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

    .faq-question span {
      flex: 1;
    }

    .faq-mark {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #f0dfc8;
      color: var(--wood);
      transition: transform .2s ease;
      flex: 0 0 auto;
    }

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

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

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

    .links-wrap {
      padding: 22px;
      border-radius: 26px;
      background: rgba(255, 250, 243, .72);
      border: 1px solid var(--line);
    }

    .links-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .links-grid a {
      padding: 12px 14px;
      border-radius: 14px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid rgba(234, 220, 202, .9);
      color: #5a3d2f;
      font-size: 13px;
      transition: transform .2s ease, border-color .2s ease;
    }

    .links-grid a:hover {
      transform: translateY(-2px);
      border-color: rgba(201, 154, 85, .62);
    }

    .site-footer {
      margin-top: 18px;
      background: #3f2419;
      color: #fff4e7;
      border-top: 1px solid rgba(201, 154, 85, .28);
    }

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

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

    .footer-brand .logo-mark {
      width: 38px;
      height: 38px;
      box-shadow: none;
      background: linear-gradient(145deg, #c99a55, #754832);
    }

    .footer-inner p {
      margin: 0;
      color: #ead8c3;
      font-size: 13px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
    }

    .footer-links a {
      color: #fff4e7;
    }

    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity .55s ease, transform .55s ease;
    }

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

    @keyframes floatIn {
      from {
        opacity: 0;
        transform: translateY(18px) scale(.98);
      }
      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    @media (max-width: 940px) {
      .nav-links,
      .nav-cta {
        display: none;
      }

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

      .nav.open {
        align-items: flex-start;
        padding: 15px 0;
      }

      .nav.open .nav-links {
        position: absolute;
        left: 18px;
        right: 18px;
        top: 72px;
        display: grid;
        gap: 8px;
        padding: 14px;
        background: #fffaf3;
        border: 1px solid var(--line);
        border-radius: 18px;
        box-shadow: var(--shadow);
      }

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

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

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

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

      .hero {
        padding-top: 36px;
      }

      .hero-notes,
      .diagnose-strip,
      .service-grid,
      .assurance-grid,
      .links-grid {
        grid-template-columns: 1fr;
      }

      .section {
        padding: 34px 0;
      }

      .service-band,
      .contact-card {
        padding: 16px;
      }

      .solution-panel {
        padding: 22px;
      }

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