:root {
      --bg: #f7f1e7;
      --bg-soft: #fbf7ef;
      --card: #fffdf8;
      --text: #2c2925;
      --muted: #6f665d;
      --line: #e7dccd;
      --brand: #8b5f36;
      --brand-dark: #5f3e23;
      --accent: #c99a63;
      --green: #667a55;
      --shadow: 0 18px 46px rgba(112, 82, 48, 0.12);
      --radius-lg: 28px;
      --radius-md: 18px;
      --container: 1120px;
    }

    * {
      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 8% 6%, rgba(201, 154, 99, 0.18), transparent 30%),
        radial-gradient(circle at 88% 12%, rgba(102, 122, 85, 0.14), transparent 28%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 48%, #f6efe4 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

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

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(247, 241, 231, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(231, 220, 205, 0.9);
    }

    .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-shrink: 0;
      font-weight: 800;
      letter-spacing: 0.08em;
      color: var(--brand-dark);
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: linear-gradient(135deg, #9d7146, #d4aa75);
      color: #fffdf8;
      box-shadow: 0 10px 24px rgba(139, 95, 54, 0.25);
      font-size: 22px;
      line-height: 1;
    }

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

    .brand-text span:first-child {
      font-size: 17px;
    }

    .brand-text span:last-child {
      font-size: 12px;
      color: var(--muted);
      font-weight: 600;
      letter-spacing: 0.04em;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 6px;
      flex-wrap: wrap;
    }

    .nav-links a {
      padding: 9px 13px;
      border-radius: 999px;
      color: #4a4037;
      font-size: 14px;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .nav-links a:hover {
      background: #efe4d4;
      color: var(--brand-dark);
      transform: translateY(-1px);
    }

    .nav-cta {
      background: var(--text);
      color: #fffaf1 !important;
      margin-left: 4px;
    }

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

    main {
      position: relative;
    }

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

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
      gap: 34px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(255, 253, 248, 0.72);
      color: var(--brand-dark);
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 5px rgba(102, 122, 85, 0.12);
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(34px, 6vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #26211d;
    }

    .hero-desc {
      margin: 0;
      max-width: 650px;
      color: var(--muted);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn-primary {
      background: var(--brand-dark);
      color: #fffaf1;
      box-shadow: 0 14px 28px rgba(95, 62, 35, 0.2);
    }

    .btn-secondary {
      background: rgba(255, 253, 248, 0.7);
      color: var(--brand-dark);
      border-color: var(--line);
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 32px rgba(95, 62, 35, 0.16);
    }

    .hero-note {
      margin-top: 18px;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      max-width: 620px;
    }

    .note-item {
      padding: 13px 14px;
      border-radius: 16px;
      background: rgba(255, 253, 248, 0.65);
      border: 1px solid rgba(231, 220, 205, 0.85);
      color: #4f463e;
      font-size: 14px;
    }

    .visual-card {
      position: relative;
      padding: 14px;
      border-radius: 34px;
      background: rgba(255, 253, 248, 0.72);
      border: 1px solid rgba(231, 220, 205, 0.95);
      box-shadow: var(--shadow);
      overflow: hidden;
      animation: floatIn 0.8s ease both;
    }

    .visual-card::before {
      content: "";
      position: absolute;
      inset: 18px auto auto 18px;
      width: 110px;
      height: 110px;
      border-radius: 50%;
      background: rgba(201, 154, 99, 0.18);
      filter: blur(8px);
      pointer-events: none;
    }

    .visual-image {
      position: relative;
      border-radius: 25px;
      overflow: hidden;
      aspect-ratio: 4 / 3;
      background: #eee2d2;
    }

    .visual-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .visual-panel {
      position: relative;
      margin-top: 12px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px;
      border-radius: 22px;
      background: #f5ebdd;
    }

    .visual-panel strong {
      display: block;
      color: var(--brand-dark);
      font-size: 16px;
      margin-bottom: 2px;
    }

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

    .pill {
      padding: 8px 11px;
      border-radius: 999px;
      background: #fffdf8;
      color: var(--green);
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    section {
      padding: 34px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.75fr) minmax(260px, 0.55fr);
      gap: 28px;
      align-items: end;
      margin-bottom: 20px;
    }

    .section-kicker {
      margin: 0 0 7px;
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    h2 {
      margin: 0;
      font-size: clamp(25px, 3.8vw, 38px);
      line-height: 1.22;
      letter-spacing: -0.025em;
      color: #28231f;
    }

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

    .about-band {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: rgba(255, 253, 248, 0.72);
      border: 1px solid var(--line);
      box-shadow: 0 14px 36px rgba(112, 82, 48, 0.08);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      align-items: start;
    }

    .about-text p {
      margin: 0 0 12px;
      color: #51483f;
    }

    .info-list {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .info-list li {
      padding: 13px 14px;
      border-radius: 16px;
      background: #f7efe3;
      color: #433a32;
      border: 1px solid rgba(231, 220, 205, 0.82);
    }

    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .solution-card {
      padding: 22px;
      border-radius: 24px;
      background: rgba(255, 253, 248, 0.76);
      border: 1px solid var(--line);
      box-shadow: 0 12px 30px rgba(112, 82, 48, 0.08);
      transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
    }

    .solution-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow);
      border-color: #d8c3aa;
    }

    .card-icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      background: #efe1cf;
      color: var(--brand-dark);
      font-weight: 900;
      margin-bottom: 14px;
    }

    h3 {
      margin: 0 0 8px;
      font-size: 19px;
      line-height: 1.35;
      color: #2a251f;
    }

    .solution-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14.5px;
    }

    .gallery {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 16px;
      align-items: stretch;
    }

    .gallery-main,
    .gallery-side {
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: #eadcc9;
      border: 1px solid var(--line);
      box-shadow: 0 12px 34px rgba(112, 82, 48, 0.1);
    }

    .gallery-main {
      min-height: 330px;
    }

    .gallery-main img,
    .gallery-side img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .gallery-side {
      display: grid;
      grid-template-rows: 1fr 1fr;
      gap: 0;
      min-height: 330px;
    }

    .assurance-wrap {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
      gap: 18px;
      align-items: start;
    }

    .assurance-panel {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #eee2d2;
      border: 1px solid #dfcfbb;
    }

    .assurance-panel p {
      margin: 0;
      color: #584d43;
    }

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

    .warranty-item {
      padding: 16px;
      border-radius: 20px;
      background: rgba(255, 253, 248, 0.78);
      border: 1px solid var(--line);
    }

    .warranty-item strong {
      display: block;
      color: var(--brand-dark);
      margin-bottom: 4px;
    }

    .warranty-item span {
      color: var(--muted);
      font-size: 14px;
    }

    .links-card {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: rgba(255, 253, 248, 0.72);
      border: 1px solid var(--line);
    }

    .links-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px 14px;
      margin-top: 14px;
    }

    .links-grid a {
      padding: 11px 12px;
      border-radius: 14px;
      background: #f5ecdf;
      color: #4a3c31;
      font-size: 14px;
      transition: background 0.2s ease, transform 0.2s ease;
    }

    .links-grid a:hover {
      background: #ead8c0;
      transform: translateX(3px);
    }

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

    details {
      border-radius: 20px;
      background: rgba(255, 253, 248, 0.8);
      border: 1px solid var(--line);
      overflow: hidden;
      box-shadow: 0 10px 24px rgba(112, 82, 48, 0.06);
    }

    summary {
      cursor: pointer;
      padding: 17px 20px;
      font-weight: 800;
      color: #342d27;
      list-style: none;
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: center;
    }

    summary::-webkit-details-marker {
      display: none;
    }

    summary::after {
      content: "+";
      width: 26px;
      height: 26px;
      display: grid;
      place-items: center;
      flex-shrink: 0;
      border-radius: 50%;
      background: #efe1cf;
      color: var(--brand-dark);
      transition: transform 0.2s ease;
    }

    details[open] summary::after {
      transform: rotate(45deg);
    }

    details p {
      margin: 0;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 14.5px;
    }

    .cta-strip {
      margin: 26px 0 0;
      padding: 26px;
      border-radius: 30px;
      background:
        linear-gradient(135deg, rgba(95, 62, 35, 0.95), rgba(139, 95, 54, 0.9)),
        #5f3e23;
      color: #fffaf1;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 20px;
      align-items: center;
      box-shadow: 0 18px 42px rgba(95, 62, 35, 0.18);
    }

    .cta-strip h2 {
      color: #fffaf1;
      font-size: clamp(24px, 3.4vw, 34px);
      margin-bottom: 6px;
    }

    .cta-strip p {
      margin: 0;
      color: #f3e7d8;
    }

    .cta-strip .btn {
      background: #fffaf1;
      color: var(--brand-dark);
      white-space: nowrap;
    }

    .site-footer {
      margin-top: 34px;
      padding: 28px 0;
      background: #efe4d4;
      border-top: 1px solid #deccb6;
      color: #372f28;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 20px;
      align-items: center;
    }

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

    .footer-brand .logo-mark {
      width: 38px;
      height: 38px;
      font-size: 20px;
      box-shadow: none;
    }

    .footer-info p {
      margin: 2px 0 0;
      color: #695d51;
      font-size: 13px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 12px;
      font-size: 14px;
    }

    .footer-links a {
      color: #4a3a2d;
      font-weight: 700;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.65s ease, transform 0.65s ease;
    }

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

    @keyframes floatIn {
      from {
        opacity: 0;
        transform: translateY(18px) scale(0.98);
      }
      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    @media (max-width: 920px) {
      .menu-toggle {
        display: grid;
        place-items: center;
      }

      .nav {
        position: relative;
      }

      .nav-links {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        display: none;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: #fffaf1;
        box-shadow: var(--shadow);
        justify-content: flex-start;
      }

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

      .hero-grid,
      .section-head,
      .about-band,
      .assurance-wrap,
      .gallery,
      .cta-strip,
      .footer-inner {
        grid-template-columns: 1fr;
      }

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

      .footer-links {
        justify-content: flex-start;
      }

      .cta-strip .btn {
        justify-self: start;
      }
    }

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

      .hero {
        padding-top: 34px;
      }

      .brand-text span:last-child {
        display: none;
      }

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

      .about-band,
      .links-card,
      .assurance-panel,
      .cta-strip {
        padding: 20px;
      }

      .gallery-main,
      .gallery-side {
        min-height: auto;
      }

      .gallery-side {
        grid-template-rows: none;
        grid-template-columns: 1fr;
      }

      section {
        padding: 28px 0;
      }
    }