:root {
      --bg: #130f0a;
      --bg-soft: #21170f;
      --panel: #2b2116;
      --panel-light: #f7efe1;
      --gold: #d6ad63;
      --gold-deep: #9d7333;
      --text: #f5ead8;
      --muted: #c9b99e;
      --dark-text: #2a2118;
      --line: rgba(214, 173, 99, 0.28);
      --shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
      --radius-lg: 28px;
      --radius-md: 18px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(214, 173, 99, 0.16), transparent 30%),
        radial-gradient(circle at 90% 18%, rgba(157, 115, 51, 0.14), transparent 28%),
        linear-gradient(180deg, #130f0a 0%, #1c130c 44%, #120e0a 100%);
      line-height: 1.72;
      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(19, 15, 10, 0.84);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #24180c;
      font-weight: 900;
      font-size: 24px;
      background: linear-gradient(135deg, #f4d28a, #b98535);
      box-shadow: 0 0 0 1px rgba(255,255,255,0.12), 0 10px 24px rgba(214,173,99,0.22);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .brand-text strong {
      font-size: 17px;
      letter-spacing: 0.08em;
      color: #ffe3a8;
    }

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

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .nav-links a {
      display: inline-flex;
      padding: 10px 12px;
      border-radius: 999px;
      color: #ead8b6;
      font-size: 14px;
      transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
    }

    .nav-links a:hover {
      background: rgba(214, 173, 99, 0.14);
      color: #fff4d9;
      transform: translateY(-1px);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 16px;
      border-radius: 999px;
      color: #24180c;
      background: linear-gradient(135deg, #f3d184, #b98434);
      font-weight: 700;
      box-shadow: 0 14px 32px rgba(185, 132, 52, 0.24);
      white-space: nowrap;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: rgba(255,255,255,0.06);
      color: #f7dfad;
      font-size: 20px;
      cursor: pointer;
    }

    .hero {
      padding: 64px 0 36px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
      gap: 32px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 13px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(214, 173, 99, 0.08);
      color: #f5d89c;
      font-size: 13px;
      letter-spacing: 0.04em;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--gold);
      box-shadow: 0 0 14px rgba(214,173,99,0.7);
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(34px, 6vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #fff0c8;
    }

    .hero-lead {
      max-width: 680px;
      margin: 0 0 24px;
      color: #e2cfad;
      font-size: 17px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 14px;
      font-weight: 800;
      transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    }

    .btn-primary {
      color: #23170d;
      background: linear-gradient(135deg, #f6d991, #b87f2c);
      box-shadow: 0 16px 34px rgba(184, 127, 44, 0.28);
    }

    .btn-secondary {
      color: #f5dfae;
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.05);
    }

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

    .hero-note {
      margin-top: 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .visual-card {
      position: relative;
      padding: 16px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(145deg, rgba(255,255,255,0.08), rgba(214,173,99,0.05)),
        rgba(43, 33, 22, 0.74);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .visual-card::before {
      content: "";
      position: absolute;
      inset: 12px;
      border: 1px solid rgba(214, 173, 99, 0.18);
      border-radius: 22px;
      pointer-events: none;
    }

    .image-frame {
      position: relative;
      aspect-ratio: 4 / 3;
      border-radius: 20px;
      overflow: hidden;
      background: #342717;
    }

    .image-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      background: linear-gradient(135deg, #281c10, #4a351b);
      padding: 10px;
    }

    .price-ribbon {
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 24px;
      padding: 14px 16px;
      border-radius: 18px;
      background: rgba(247, 239, 225, 0.94);
      color: var(--dark-text);
      box-shadow: 0 16px 36px rgba(0,0,0,0.22);
    }

    .price-ribbon strong {
      display: block;
      color: #704710;
      font-size: 18px;
    }

    .price-ribbon span {
      font-size: 13px;
      color: #5d5141;
    }

    .section {
      padding: 42px 0;
    }

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

    .section-title {
      margin: 0;
      color: #ffedc0;
      font-size: clamp(25px, 4vw, 38px);
      line-height: 1.18;
      letter-spacing: -0.02em;
    }

    .section-desc {
      max-width: 520px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .light-panel {
      color: var(--dark-text);
      background:
        linear-gradient(135deg, rgba(255,255,255,0.9), rgba(247,239,225,0.94)),
        #f7efe1;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(214,173,99,0.35);
      box-shadow: 0 20px 48px rgba(0,0,0,0.22);
      padding: 28px;
    }

    .light-panel h2,
    .light-panel h3 {
      color: #3a2814;
    }

    .light-panel p,
    .light-panel li {
      color: #514536;
    }

    .toc {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin-top: 18px;
    }

    .toc a {
      padding: 14px;
      border-radius: 16px;
      background: rgba(112, 71, 16, 0.08);
      border: 1px solid rgba(112, 71, 16, 0.16);
      color: #47331d;
      font-weight: 700;
      transition: transform 0.25s ease, background 0.25s ease;
    }

    .toc a:hover {
      transform: translateY(-2px);
      background: rgba(214,173,99,0.18);
    }

    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .service-card {
      position: relative;
      padding: 22px;
      min-height: 216px;
      border-radius: 22px;
      background: rgba(43, 33, 22, 0.78);
      border: 1px solid var(--line);
      box-shadow: 0 16px 34px rgba(0,0,0,0.2);
      transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: rgba(246, 217, 145, 0.5);
      background: rgba(55, 41, 25, 0.88);
    }

    .service-card .icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #26190c;
      background: linear-gradient(135deg, #f7d989, #b37c2e);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .service-card h3 {
      margin: 0 0 10px;
      color: #ffe8af;
      font-size: 19px;
    }

    .service-card p {
      margin: 0;
      color: #d4c2a4;
      font-size: 14px;
    }

    .split {
      display: grid;
      grid-template-columns: 0.92fr 1.08fr;
      gap: 22px;
      align-items: stretch;
    }

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

    .info-list li {
      padding: 14px 16px;
      border-radius: 16px;
      background: rgba(214,173,99,0.09);
      border: 1px solid rgba(214,173,99,0.18);
      color: #ead8b6;
    }

    .about-card {
      padding: 24px;
      border-radius: 24px;
      background:
        linear-gradient(160deg, rgba(214,173,99,0.12), rgba(255,255,255,0.04)),
        rgba(43,33,22,0.78);
      border: 1px solid var(--line);
    }

    .about-card h2 {
      margin: 0 0 12px;
      color: #ffedc0;
    }

    .about-card p {
      margin: 0 0 12px;
      color: #d7c6aa;
    }

    .store-lines {
      display: grid;
      gap: 10px;
      margin-top: 18px;
    }

    .store-line {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: #e7d5b5;
    }

    .store-line span {
      flex: 0 0 auto;
      min-width: 74px;
      color: #f2d083;
      font-weight: 800;
    }

    .warranty-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .warranty-item {
      padding: 18px;
      border-radius: 18px;
      background: rgba(255,255,255,0.06);
      border: 1px solid var(--line);
    }

    .warranty-item h3 {
      margin: 0 0 8px;
      color: #ffe5a5;
      font-size: 17px;
    }

    .warranty-item p {
      margin: 0;
      color: #d5c4a6;
      font-size: 14px;
    }

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

    .step {
      counter-increment: step;
      padding: 20px;
      border-radius: 20px;
      background: rgba(247,239,225,0.96);
      color: var(--dark-text);
      border: 1px solid rgba(214,173,99,0.35);
    }

    .step::before {
      content: counter(step);
      display: grid;
      place-items: center;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      margin-bottom: 12px;
      background: #7b5019;
      color: #fff3cf;
      font-weight: 900;
    }

    .step h3 {
      margin: 0 0 8px;
      color: #382713;
      font-size: 17px;
    }

    .step p {
      margin: 0;
      color: #574b3a;
      font-size: 14px;
    }

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(43,33,22,0.78);
      overflow: hidden;
    }

    .faq-button {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: #ffe7ad;
      text-align: left;
      font: inherit;
      font-weight: 800;
      cursor: pointer;
    }

    .faq-button span {
      color: #f1c978;
      transition: transform 0.25s ease;
    }

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

    .faq-content p {
      margin: 0;
      padding: 0 20px 18px;
      color: #d5c4a6;
      font-size: 15px;
    }

    .faq-item.open .faq-content {
      max-height: 220px;
    }

    .faq-item.open .faq-button span {
      transform: rotate(45deg);
    }

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

    .text-link {
      display: block;
      padding: 14px 16px;
      border-radius: 16px;
      color: #f4dfad;
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--line);
      transition: transform 0.25s ease, background 0.25s ease;
    }

    .text-link:hover {
      transform: translateY(-2px);
      background: rgba(214,173,99,0.12);
    }

    .final-card {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 22px;
      align-items: center;
      padding: 30px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(247,217,137,0.16), rgba(255,255,255,0.05)),
        rgba(43,33,22,0.86);
      border: 1px solid rgba(246,217,145,0.32);
      box-shadow: var(--shadow);
    }

    .final-card h2 {
      margin: 0 0 10px;
      color: #fff0c8;
      font-size: clamp(24px, 4vw, 36px);
    }

    .final-card p {
      margin: 0;
      color: #decdae;
    }

    .map-link {
      color: #ffe09a;
      font-weight: 800;
      text-decoration: underline;
      text-underline-offset: 4px;
    }

    .site-footer {
      margin-top: 18px;
      padding: 26px 0;
      background: #0e0a06;
      color: #e5d1ad;
      border-top: 1px solid var(--line);
    }

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

    .footer-inner p {
      margin: 0;
      color: #cbb894;
      font-size: 13px;
    }

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

    .footer-links a {
      color: #f1d58d;
      font-size: 13px;
    }

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

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

    @media (max-width: 920px) {
      .nav-links,
      .nav-cta {
        display: none;
      }

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

      .nav.open .nav-links {
        position: absolute;
        top: 72px;
        left: 16px;
        right: 16px;
        display: grid;
        gap: 6px;
        padding: 14px;
        border-radius: 18px;
        background: rgba(19, 15, 10, 0.98);
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

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

      .hero-grid,
      .split,
      .final-card {
        grid-template-columns: 1fr;
      }

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

      .solution-grid,
      .warranty-grid,
      .links-panel {
        grid-template-columns: 1fr;
      }

      .section-head {
        display: block;
      }

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

    @media (max-width: 560px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .hero {
        padding-top: 44px;
      }

      .light-panel,
      .final-card {
        padding: 22px;
      }

      .toc,
      .steps {
        grid-template-columns: 1fr;
      }

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

      .btn {
        width: 100%;
      }

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