:root {
      --bg: #f5f3ef;
      --bg-soft: #faf9f6;
      --card: #ffffff;
      --card-tint: #f0eee8;
      --text: #242424;
      --muted: #66645f;
      --light: #8a8780;
      --line: #dfd9cf;
      --primary: #6f7f70;
      --primary-dark: #4d5d50;
      --accent: #b48a5a;
      --accent-soft: #efe4d5;
      --shadow: 0 18px 45px rgba(78, 72, 63, 0.10);
      --radius-lg: 28px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --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 12% 4%, rgba(180, 138, 90, 0.13), transparent 28%),
        radial-gradient(circle at 88% 10%, rgba(111, 127, 112, 0.16), transparent 30%),
        linear-gradient(180deg, #f8f6f1 0%, var(--bg) 42%, #f7f5f0 100%);
      line-height: 1.68;
      overflow-x: hidden;
    }

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

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

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(248, 246, 241, 0.86);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(223, 217, 207, 0.75);
    }

    .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: 0.04em;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      box-shadow: 0 10px 24px rgba(77, 93, 80, 0.22);
      font-size: 22px;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 1px;
    }

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

    .brand-text span {
      font-size: 12px;
      color: var(--muted);
      font-weight: 500;
      letter-spacing: 0;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-left: auto;
    }

    .nav-links a {
      padding: 9px 12px;
      border-radius: 999px;
      font-size: 14px;
      color: #45443f;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-links a:hover {
      background: rgba(111, 127, 112, 0.12);
      color: var(--primary-dark);
    }

    .nav-call {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 16px;
      border-radius: 999px;
      color: #ffffff;
      background: var(--primary-dark);
      font-weight: 700;
      font-size: 14px;
      box-shadow: 0 12px 26px rgba(77, 93, 80, 0.18);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      white-space: nowrap;
    }

    .nav-call:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 32px rgba(77, 93, 80, 0.24);
    }

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

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

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
      gap: 34px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(239, 228, 213, 0.72);
      color: #6b5338;
      font-size: 13px;
      font-weight: 700;
      border: 1px solid rgba(180, 138, 90, 0.18);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(180, 138, 90, 0.14);
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(34px, 6vw, 62px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #22231f;
    }

    .hero-lead {
      max-width: 720px;
      margin: 0 0 24px;
      color: var(--muted);
      font-size: 17px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 14px;
      border: 1px solid transparent;
      font-weight: 800;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
      cursor: pointer;
    }

    .btn-primary {
      background: var(--primary-dark);
      color: #ffffff;
      box-shadow: 0 14px 30px rgba(77, 93, 80, 0.22);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(77, 93, 80, 0.28);
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.72);
      color: #34342f;
      border-color: var(--line);
    }

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

    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
      color: var(--muted);
      font-size: 14px;
    }

    .hero-note span {
      padding: 6px 10px;
      background: rgba(255, 255, 255, 0.66);
      border: 1px solid rgba(223, 217, 207, 0.8);
      border-radius: 999px;
    }

    .device-card {
      position: relative;
      padding: 18px;
      border-radius: 32px;
      background: linear-gradient(145deg, rgba(255,255,255,0.86), rgba(240,238,232,0.72));
      border: 1px solid rgba(223, 217, 207, 0.9);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .device-card::after {
      content: "";
      position: absolute;
      right: -54px;
      top: -54px;
      width: 170px;
      height: 170px;
      border-radius: 50%;
      background: rgba(111, 127, 112, 0.12);
    }

    .phone-visual {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      z-index: 1;
    }

    .phone-frame {
      aspect-ratio: 3 / 4;
      border-radius: 24px;
      overflow: hidden;
      background: #eee9df;
      border: 1px solid rgba(223, 217, 207, 0.92);
    }

    .phone-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      background: #f6f3ed;
    }

    .store-mini {
      position: relative;
      z-index: 1;
      margin-top: 14px;
      padding: 16px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(223, 217, 207, 0.82);
    }

    .store-mini strong {
      display: block;
      font-size: 18px;
      margin-bottom: 4px;
    }

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

    section {
      padding: 34px 0;
    }

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

    .section-kicker {
      margin: 0 0 6px;
      color: var(--accent);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    h2 {
      margin: 0;
      font-size: clamp(26px, 4vw, 40px);
      line-height: 1.18;
      letter-spacing: -0.03em;
      color: #24241f;
    }

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

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

    .service-item {
      padding: 18px;
      min-height: 150px;
      border-radius: 24px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(223, 217, 207, 0.9);
      box-shadow: 0 12px 30px rgba(78, 72, 63, 0.06);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .service-item:hover {
      transform: translateY(-5px);
      border-color: rgba(111, 127, 112, 0.32);
      box-shadow: 0 18px 38px rgba(78, 72, 63, 0.10);
    }

    .service-icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      background: var(--card-tint);
      color: var(--primary-dark);
      font-weight: 900;
      margin-bottom: 12px;
    }

    .service-item h3 {
      margin: 0 0 8px;
      font-size: 17px;
      line-height: 1.35;
    }

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

    .solution-panel {
      display: grid;
      grid-template-columns: 0.88fr 1.12fr;
      gap: 16px;
      align-items: stretch;
    }

    .soft-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.74);
      border: 1px solid rgba(223, 217, 207, 0.92);
      box-shadow: 0 14px 38px rgba(78, 72, 63, 0.07);
    }

    .diagnosis-list {
      display: grid;
      gap: 12px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .diagnosis-list li {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 10px;
      align-items: start;
      padding: 12px;
      border-radius: 16px;
      background: #f7f5ef;
      color: #403f39;
    }

    .check {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: rgba(111, 127, 112, 0.14);
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 900;
      margin-top: 2px;
    }

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

    .step {
      display: grid;
      grid-template-columns: 54px 1fr;
      gap: 14px;
      padding: 16px;
      border-radius: 20px;
      background: linear-gradient(135deg, rgba(250,249,246,0.92), rgba(239,228,213,0.48));
      border: 1px solid rgba(223, 217, 207, 0.9);
    }

    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      background: #ffffff;
      color: var(--accent);
      font-weight: 900;
      box-shadow: inset 0 0 0 1px rgba(223, 217, 207, 0.92);
    }

    .step h3 {
      margin: 0 0 4px;
      font-size: 17px;
    }

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

    .warranty-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }

    .warranty-card {
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.76);
      border: 1px solid rgba(223, 217, 207, 0.9);
    }

    .warranty-card h3 {
      margin: 0 0 8px;
      font-size: 17px;
    }

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

    .contact-wrap {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 16px;
      align-items: stretch;
    }

    .contact-main {
      padding: 26px;
      border-radius: 30px;
      background: linear-gradient(135deg, rgba(255,255,255,0.86), rgba(239,228,213,0.62));
      border: 1px solid rgba(223, 217, 207, 0.92);
      box-shadow: var(--shadow);
    }

    .info-lines {
      display: grid;
      gap: 12px;
      margin: 20px 0 0;
    }

    .info-line {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 12px;
      padding: 12px 0;
      border-bottom: 1px solid rgba(223, 217, 207, 0.82);
    }

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

    .info-line span {
      color: var(--light);
      font-size: 14px;
    }

    .info-line strong,
    .info-line a {
      color: #2f302b;
      font-weight: 800;
    }

    .qr-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 14px;
    }

    .qr-card {
      padding: 18px;
      border-radius: 26px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(223, 217, 207, 0.9);
      box-shadow: 0 14px 32px rgba(78, 72, 63, 0.07);
    }

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

    .qr-card p {
      margin: 0 0 12px;
      color: var(--muted);
      font-size: 14px;
    }

    .qr-img {
      width: 172px;
      max-width: 100%;
      padding: 10px;
      border-radius: 18px;
      background: #ffffff;
      border: 1px solid var(--line);
    }

    .map-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 14px;
      border-radius: 14px;
      background: #eef1ea;
      color: var(--primary-dark);
      font-weight: 800;
      border: 1px solid rgba(111, 127, 112, 0.18);
    }

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

    .faq-item {
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.76);
      border: 1px solid rgba(223, 217, 207, 0.9);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      border: 0;
      background: transparent;
      color: #2d2d28;
      font-size: 16px;
      font-weight: 900;
      text-align: left;
      cursor: pointer;
    }

    .faq-question span:last-child {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #f1eee7;
      color: var(--primary-dark);
      flex: 0 0 auto;
      transition: transform 0.2s ease;
    }

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

    .faq-answer p {
      margin: 0;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 15px;
    }

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

    .links-box {
      display: grid;
      grid-template-columns: 1fr 2fr;
      gap: 16px;
      align-items: start;
      padding: 24px;
      border-radius: 28px;
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid rgba(223, 217, 207, 0.92);
    }

    .links-box p {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friend-links a {
      padding: 8px 11px;
      border-radius: 999px;
      background: #f4f1ea;
      color: #504f49;
      font-size: 13px;
      border: 1px solid rgba(223, 217, 207, 0.9);
      transition: background 0.2s ease, color 0.2s ease;
    }

    .friend-links a:hover {
      background: var(--primary-dark);
      color: #ffffff;
    }

    .site-footer {
      margin-top: 18px;
      background: #ece7dd;
      color: #2c2b27;
      border-top: 1px solid #d8d1c5;
    }

    .footer-inner {
      padding: 24px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .footer-inner p {
      margin: 0;
      color: #56534d;
      font-size: 14px;
    }

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

    .footer-links a {
      color: #33332e;
      font-size: 14px;
      font-weight: 700;
    }

    .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: 920px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav {
        min-height: 66px;
      }

      .menu-btn {
        display: inline-grid;
        place-items: center;
        flex: 0 0 auto;
      }

      .nav-links,
      .nav-call {
        display: none;
      }

      .site-header.open .nav-links {
        position: absolute;
        left: 14px;
        right: 14px;
        top: 72px;
        display: grid;
        gap: 4px;
        padding: 12px;
        border-radius: 20px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

      .site-header.open .nav-links a {
        padding: 12px;
        border-radius: 14px;
      }

      .hero {
        padding: 40px 0 24px;
      }

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

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

      .section-head {
        display: block;
      }

      .section-desc {
        margin-top: 10px;
      }
    }

    @media (max-width: 560px) {
      .brand-text span {
        display: none;
      }

      h1 {
        font-size: 36px;
      }

      section {
        padding: 28px 0;
      }

      .service-band,
      .warranty-grid,
      .phone-visual {
        grid-template-columns: 1fr;
      }

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

      .btn {
        width: 100%;
      }

      .info-line {
        grid-template-columns: 1fr;
        gap: 3px;
      }

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

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

      .reveal,
      .btn,
      .service-item {
        transition: none;
      }
    }