:root {
      --bg: #fbf8f4;
      --bg-soft: #fffdf9;
      --card: #ffffff;
      --text: #263238;
      --muted: #66727a;
      --line: #eadfd3;
      --brand: #b8896b;
      --brand-deep: #735340;
      --mint: #dff3ee;
      --peach: #f6e6dc;
      --shadow: 0 18px 45px rgba(116, 83, 64, 0.12);
      --radius-lg: 28px;
      --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", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 9% 8%, rgba(223, 243, 238, 0.9), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(246, 230, 220, 0.92), transparent 30%),
        linear-gradient(180deg, #fffdf9 0%, #fbf8f4 48%, #fffaf5 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(100% - 32px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 253, 249, 0.86);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(234, 223, 211, 0.75);
    }

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

    .logo {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 16px;
      color: #ffffff;
      background: linear-gradient(135deg, #b8896b, #735340);
      font-size: 24px;
      font-weight: 800;
      box-shadow: 0 12px 26px rgba(115, 83, 64, 0.22);
      flex: 0 0 auto;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-text {
      display: grid;
      gap: 1px;
    }

    .brand-name {
      font-size: 16px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: #2c2724;
    }

    .brand-sub {
      font-size: 12px;
      color: var(--muted);
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 8px;
      margin-left: auto;
    }

    .nav-links a {
      padding: 9px 12px;
      border-radius: 999px;
      font-size: 14px;
      color: #3b4449;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .nav-links a:hover {
      background: #f4ebe3;
      color: var(--brand-deep);
      transform: translateY(-1px);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 16px;
      border-radius: 999px;
      color: #ffffff;
      background: linear-gradient(135deg, #b8896b, #7d5b46);
      font-size: 14px;
      font-weight: 700;
      box-shadow: 0 14px 26px rgba(184, 137, 107, 0.24);
      white-space: nowrap;
    }

    .menu-btn {
      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 {
      display: block;
    }

    section {
      padding: 44px 0;
    }

    .hero {
      padding: 54px 0 36px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.86fr);
      gap: 34px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 13px;
      border: 1px solid rgba(184, 137, 107, 0.24);
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.78);
      color: var(--brand-deep);
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: #7fc7b5;
      box-shadow: 0 0 0 5px rgba(127, 199, 181, 0.16);
    }

    h1 {
      margin: 18px 0 16px;
      max-width: 680px;
      font-size: clamp(34px, 6vw, 56px);
      line-height: 1.08;
      letter-spacing: -0.05em;
      color: #26211f;
    }

    .lead {
      max-width: 650px;
      margin: 0;
      color: #526068;
      font-size: 17px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 800;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn-primary {
      color: #ffffff;
      background: linear-gradient(135deg, #b8896b, #735340);
      box-shadow: 0 18px 30px rgba(115, 83, 64, 0.22);
    }

    .btn-secondary {
      color: var(--brand-deep);
      background: #ffffff;
      border: 1px solid rgba(184, 137, 107, 0.28);
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(115, 83, 64, 0.18);
    }

    .hero-note {
      margin-top: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      color: var(--muted);
      font-size: 13px;
    }

    .hero-note span {
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid rgba(234, 223, 211, 0.82);
    }

    .visual-card {
      position: relative;
      padding: 18px;
      border-radius: 34px;
      background: rgba(255, 255, 255, 0.74);
      border: 1px solid rgba(234, 223, 211, 0.88);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .visual-card::before {
      content: "";
      position: absolute;
      inset: 18px 18px auto auto;
      width: 110px;
      height: 110px;
      border-radius: 50%;
      background: rgba(223, 243, 238, 0.92);
      filter: blur(8px);
      animation: floatGlow 5s ease-in-out infinite;
    }

    .phone-frame {
      position: relative;
      z-index: 1;
      border-radius: 26px;
      overflow: hidden;
      background: #f6efe8;
      border: 1px solid #efe3d8;
      aspect-ratio: 4 / 3;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .phone-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: 12px;
    }

    .visual-panel {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin-top: 12px;
    }

    .mini-card {
      padding: 14px;
      border-radius: 18px;
      background: #fffaf6;
      border: 1px solid #efe3d8;
    }

    .mini-card strong {
      display: block;
      color: #2c2724;
      font-size: 15px;
    }

    .mini-card span {
      display: block;
      margin-top: 3px;
      color: var(--muted);
      font-size: 12px;
    }

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

    .section-head h2 {
      margin: 0;
      font-size: clamp(26px, 4vw, 38px);
      line-height: 1.18;
      letter-spacing: -0.03em;
      color: #2b2521;
    }

    .section-head p {
      max-width: 560px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 15px;
    }

    .service-card {
      min-height: 168px;
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid rgba(234, 223, 211, 0.86);
      box-shadow: 0 14px 32px rgba(116, 83, 64, 0.08);
      transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      border-color: rgba(184, 137, 107, 0.38);
      box-shadow: 0 18px 36px rgba(116, 83, 64, 0.12);
    }

    .icon-dot {
      width: 38px;
      height: 38px;
      border-radius: 14px;
      background: linear-gradient(135deg, #dff3ee, #f6e6dc);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-deep);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .service-card h3 {
      margin: 0 0 8px;
      color: #2c2724;
      font-size: 17px;
    }

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

    .solution-wrap {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
      gap: 20px;
      align-items: stretch;
    }

    .soft-panel {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(255,255,255,0.88), rgba(250,242,235,0.86));
      border: 1px solid rgba(234, 223, 211, 0.9);
      box-shadow: var(--shadow);
    }

    .soft-panel h3 {
      margin: 0 0 12px;
      font-size: 22px;
      color: #2c2724;
    }

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

    .check-list li {
      display: flex;
      gap: 10px;
      color: #405057;
      font-size: 15px;
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 auto;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #dff3ee;
      color: #247662;
      font-size: 13px;
      font-weight: 900;
      margin-top: 2px;
    }

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

    .step {
      display: grid;
      grid-template-columns: 42px minmax(0, 1fr);
      gap: 14px;
      padding: 18px;
      border-radius: 22px;
      background: #ffffff;
      border: 1px solid rgba(234, 223, 211, 0.9);
    }

    .step b {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #f3e4da;
      color: var(--brand-deep);
      font-size: 15px;
    }

    .step h3 {
      margin: 0 0 4px;
      font-size: 16px;
      color: #2c2724;
    }

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

    .warranty-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 15px;
    }

    .warranty-card {
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid rgba(234, 223, 211, 0.9);
    }

    .warranty-card h3 {
      margin: 0 0 8px;
      color: #2c2724;
      font-size: 17px;
    }

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

    .contact-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
      gap: 18px;
      align-items: start;
    }

    .contact-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #ffffff;
      border: 1px solid rgba(234, 223, 211, 0.95);
      box-shadow: var(--shadow);
    }

    .info-list {
      display: grid;
      gap: 14px;
      margin-top: 18px;
    }

    .info-item {
      display: grid;
      gap: 4px;
      padding-bottom: 13px;
      border-bottom: 1px solid #f0e7de;
    }

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

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

    .info-item strong,
    .info-item a {
      color: #2c2724;
      font-size: 16px;
      font-weight: 800;
      word-break: break-word;
    }

    .qr-grid {
      display: grid;
      grid-template-columns: 190px minmax(0, 1fr);
      gap: 18px;
      align-items: center;
      margin-top: 18px;
      padding: 18px;
      border-radius: 22px;
      background: #fff9f4;
      border: 1px solid #efe3d8;
    }

    .qr-box {
      width: 190px;
      aspect-ratio: 1;
      padding: 10px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid #eadfd3;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .qr-box img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .map-link {
      display: inline-flex;
      margin-top: 10px;
      color: #735340;
      font-weight: 800;
      text-decoration: underline;
      text-underline-offset: 4px;
    }

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

    .faq-item {
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid rgba(234, 223, 211, 0.9);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: transparent;
      color: #2c2724;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      text-align: left;
      font-size: 16px;
      font-weight: 800;
      cursor: pointer;
    }

    .faq-question span {
      flex: 1;
    }

    .faq-question i {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: #f3e4da;
      color: var(--brand-deep);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-style: normal;
      transition: transform 0.2s 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 i {
      transform: rotate(45deg);
    }

    .link-section {
      padding-top: 22px;
      padding-bottom: 36px;
    }

    .link-panel {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.74);
      border: 1px solid rgba(234, 223, 211, 0.92);
    }

    .link-panel h2 {
      margin: 0 0 14px;
      font-size: 22px;
      color: #2c2724;
    }

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

    .friend-links a {
      display: inline-flex;
      padding: 8px 12px;
      border-radius: 999px;
      background: #fff9f4;
      border: 1px solid #eadfd3;
      color: #59656b;
      font-size: 13px;
      transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    }

    .friend-links a:hover {
      color: var(--brand-deep);
      border-color: rgba(184, 137, 107, 0.48);
      transform: translateY(-1px);
    }

    .site-footer {
      background: #2b2521;
      color: #f9efe6;
      padding: 26px 0;
      margin-top: 0;
    }

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

    .footer-row p {
      margin: 0;
      color: #eadfd3;
      font-size: 14px;
    }

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

    .footer-links a {
      color: #fff7ef;
      font-size: 14px;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.55s ease, transform 0.55s ease;
    }

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

    @keyframes floatGlow {
      0%, 100% {
        transform: translate3d(0, 0, 0);
      }
      50% {
        transform: translate3d(-12px, 10px, 0);
      }
    }

    @media (max-width: 980px) {
      .menu-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .nav-links {
        position: absolute;
        top: 72px;
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 14px;
        border-radius: 22px;
        background: #ffffff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

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

      .nav-links a {
        text-align: center;
      }

      .nav-cta {
        display: none;
      }

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

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

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

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

      section {
        padding: 34px 0;
      }

      .hero {
        padding-top: 34px;
      }

      .brand-sub {
        display: none;
      }

      .service-grid,
      .warranty-grid,
      .visual-panel,
      .qr-grid {
        grid-template-columns: 1fr;
      }

      .qr-box {
        width: 100%;
        max-width: 220px;
      }

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

      .btn {
        width: 100%;
      }

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