:root{
      --bg: #fbf6ef;
      --bg-2: #f4e9dc;
      --card: rgba(255,255,255,0.72);
      --card-strong: #fffaf3;
      --line: rgba(122,35,64,0.14);
      --text: #2f241f;
      --muted: #70584d;
      --brand: #7a2340;
      --brand-2: #a0465d;
      --accent: #b98a57;
      --accent-2: #e1c39a;
      --shadow: 0 18px 50px rgba(69, 31, 40, 0.12);
      --shadow-soft: 0 10px 28px rgba(69, 31, 40, 0.08);
      --radius: 22px;
      --radius-sm: 16px;
      --container: min(1120px, calc(100% - 32px));
    }

    * { 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", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 18% 8%, rgba(185, 138, 87, 0.12), transparent 24%),
        radial-gradient(circle at 92% 12%, rgba(122, 35, 64, 0.10), transparent 22%),
        linear-gradient(180deg, #fffaf4 0%, #f8f0e6 44%, #f3e8db 100%);
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before,
    body::after {
      content: "";
      position: fixed;
      inset: auto;
      pointer-events: none;
      z-index: 0;
      filter: blur(6px);
      opacity: 0.55;
    }

    body::before {
      width: 260px;
      height: 260px;
      right: -80px;
      top: 180px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(185,138,87,0.20) 0%, rgba(185,138,87,0.06) 42%, transparent 72%);
    }

    body::after {
      width: 340px;
      height: 340px;
      left: -120px;
      bottom: 120px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(122,35,64,0.16) 0%, rgba(122,35,64,0.05) 38%, transparent 72%);
    }

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

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

    .container {
      width: var(--container);
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(251, 246, 239, 0.84);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(122, 35, 64, 0.10);
    }

    .header-bar {
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 12px 0;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex: 0 0 auto;
      color: var(--text);
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: linear-gradient(145deg, var(--brand), #9b3c57);
      color: #fff7f1;
      box-shadow: 0 10px 24px rgba(122, 35, 64, 0.24);
      font-size: 1.1rem;
    }

    .brand-text {
      font-size: 1.03rem;
      line-height: 1.1;
    }

    .menu-btn {
      display: none;
      align-items: center;
      gap: 8px;
      border: 1px solid rgba(122, 35, 64, 0.16);
      background: rgba(255, 255, 255, 0.72);
      color: var(--text);
      border-radius: 999px;
      padding: 10px 14px;
      box-shadow: var(--shadow-soft);
      cursor: pointer;
      transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    }

    .menu-btn:hover { transform: translateY(-1px); border-color: rgba(122,35,64,0.26); }
    .menu-btn-icon {
      width: 18px;
      height: 12px;
      position: relative;
      display: inline-block;
    }
    .menu-btn-icon::before,
    .menu-btn-icon::after,
    .menu-btn-icon span {
      content: "";
      position: absolute;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--brand);
      border-radius: 999px;
      transition: transform 0.25s ease, top 0.25s ease, opacity 0.25s ease;
    }
    .menu-btn-icon::before { top: 0; }
    .menu-btn-icon span { top: 5px; }
    .menu-btn-icon::after { top: 10px; }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .site-nav a {
      padding: 10px 14px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 0.96rem;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .site-nav a:hover,
    .site-nav a:focus-visible {
      background: rgba(122, 35, 64, 0.08);
      color: var(--brand);
      transform: translateY(-1px);
      outline: none;
    }

    main {
      padding: 10px 0 20px;
    }

    section {
      padding: 22px 0;
    }

    .hero {
      padding-top: 26px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.12fr 0.88fr;
      gap: 22px;
      align-items: stretch;
    }

    .hero-copy,
    .hero-visual,
    .toc-strip,
    .info-panel,
    .section-card,
    .link-grid,
    .faq-card,
    .footer-box {
      background: linear-gradient(180deg, rgba(255,255,255,0.82), rgba(255,250,243,0.76));
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .hero-copy {
      padding: clamp(24px, 4.2vw, 40px);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      inset: auto -30px -42px auto;
      width: 160px;
      height: 160px;
      background: radial-gradient(circle, rgba(185, 138, 87, 0.16) 0%, rgba(185, 138, 87, 0.03) 52%, transparent 72%);
      border-radius: 50%;
      pointer-events: none;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(122, 35, 64, 0.08);
      color: var(--brand);
      font-size: 0.92rem;
      font-weight: 700;
      letter-spacing: 0.02em;
      margin-bottom: 14px;
    }

    h1 {
      margin: 0;
      font-size: clamp(2rem, 4vw, 3.45rem);
      line-height: 1.1;
      letter-spacing: -0.03em;
      color: #231814;
    }

    .hero-lead {
      margin: 16px 0 0;
      max-width: 62ch;
      color: var(--muted);
      line-height: 1.85;
      font-size: 1rem;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 22px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 700;
      font-size: 0.96rem;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
      user-select: none;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(145deg, var(--brand), #932f4b);
      color: #fffaf4;
      box-shadow: 0 16px 30px rgba(122, 35, 64, 0.24);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.76);
      border-color: rgba(122, 35, 64, 0.18);
      color: var(--brand);
    }

    .btn:hover,
    .btn:focus-visible {
      transform: translateY(-1px);
      outline: none;
    }

    .hero-points {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin: 22px 0 0;
      padding: 0;
      list-style: none;
    }

    .hero-points li {
      padding: 14px 14px 13px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.6);
      border: 1px solid rgba(122, 35, 64, 0.10);
      color: var(--muted);
      line-height: 1.55;
      min-height: 88px;
    }

    .hero-points strong {
      display: block;
      color: var(--text);
      font-size: 0.96rem;
      margin-bottom: 6px;
    }

    .hero-visual {
      padding: 16px;
      display: grid;
      gap: 14px;
      align-content: start;
    }

    .visual-frame {
      border-radius: 20px;
      overflow: hidden;
      background: linear-gradient(180deg, #fff, #f8efdf);
      border: 1px solid rgba(122, 35, 64, 0.10);
      box-shadow: 0 12px 30px rgba(74, 32, 42, 0.12);
      aspect-ratio: 4 / 3.15;
    }

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

    .visual-info {
      padding: 18px;
      border-radius: 18px;
      background: linear-gradient(145deg, rgba(122,35,64,0.08), rgba(185,138,87,0.10));
      border: 1px solid rgba(122, 35, 64, 0.10);
      color: var(--text);
    }

    .visual-info h2 {
      margin: 0 0 8px;
      font-size: 1.05rem;
      color: var(--brand);
    }

    .visual-info p {
      margin: 0;
      line-height: 1.7;
      color: var(--muted);
    }

    .toc-strip {
      padding: 16px 18px;
    }

    .toc-strip .section-label {
      font-size: 0.93rem;
      font-weight: 700;
      color: var(--brand);
      margin-bottom: 10px;
    }

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

    .toc a {
      padding: 10px 14px;
      border-radius: 999px;
      border: 1px solid rgba(122, 35, 64, 0.14);
      background: rgba(255,255,255,0.65);
      color: var(--muted);
      font-size: 0.95rem;
      transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
    }

    .toc a:hover,
    .toc a:focus-visible {
      transform: translateY(-1px);
      background: rgba(122, 35, 64, 0.08);
      color: var(--brand);
      outline: none;
    }

    .section-heading {
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: 16px;
    }

    .section-heading h2 {
      margin: 0;
      font-size: clamp(1.4rem, 2.6vw, 2rem);
      color: #231814;
      line-height: 1.2;
    }

    .section-heading p {
      margin: 0;
      color: var(--muted);
      line-height: 1.75;
      max-width: 72ch;
    }

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

    .mini-card {
      padding: 18px;
      border-radius: 20px;
      background: linear-gradient(180deg, rgba(255,255,255,0.82), rgba(255,250,244,0.75));
      border: 1px solid rgba(122, 35, 64, 0.10);
      box-shadow: var(--shadow-soft);
      min-height: 164px;
    }

    .mini-card .tag {
      display: inline-flex;
      padding: 7px 11px;
      border-radius: 999px;
      background: rgba(122, 35, 64, 0.08);
      color: var(--brand);
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 12px;
    }

    .mini-card h3 {
      margin: 0 0 10px;
      font-size: 1.08rem;
      color: var(--text);
    }

    .mini-card p,
    .mini-card ul {
      margin: 0;
      color: var(--muted);
      line-height: 1.75;
      padding-left: 18px;
    }

    .section-card {
      padding: 18px;
    }

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

    .service-item {
      padding: 18px 18px 17px;
      border-radius: 20px;
      background: linear-gradient(180deg, rgba(255,255,255,0.8), rgba(255,249,241,0.76));
      border: 1px solid rgba(122, 35, 64, 0.10);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      gap: 10px;
      min-height: 144px;
    }

    .service-item .dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: linear-gradient(145deg, var(--brand), var(--accent));
      box-shadow: 0 0 0 5px rgba(122, 35, 64, 0.07);
    }

    .service-item h3 {
      margin: 0;
      font-size: 1.02rem;
      color: var(--text);
    }

    .service-item p {
      margin: 0;
      color: var(--muted);
      line-height: 1.7;
    }

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

    .solution-card {
      padding: 20px;
      border-radius: 20px;
      background: linear-gradient(180deg, rgba(255,255,255,0.82), rgba(255,248,240,0.78));
      border: 1px solid rgba(122, 35, 64, 0.10);
      box-shadow: var(--shadow-soft);
    }

    .solution-card h3 {
      margin: 0 0 10px;
      font-size: 1.05rem;
      color: var(--brand);
    }

    .solution-card p {
      margin: 0;
      color: var(--muted);
      line-height: 1.75;
    }

    .solution-card .step {
      display: inline-flex;
      margin-bottom: 12px;
      padding: 7px 10px;
      border-radius: 999px;
      background: rgba(185, 138, 87, 0.12);
      color: #7a5a2c;
      font-weight: 700;
      font-size: 0.9rem;
    }

    .process-note {
      margin-top: 14px;
      padding: 16px 18px;
      border-radius: 18px;
      background: rgba(122, 35, 64, 0.06);
      border: 1px dashed rgba(122, 35, 64, 0.18);
      color: var(--muted);
      line-height: 1.75;
    }

    .service-balance {
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 16px;
      align-items: start;
    }

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

    .warranty-item {
      padding: 16px;
      border-radius: 18px;
      background: rgba(255,255,255,0.76);
      border: 1px solid rgba(122, 35, 64, 0.10);
      box-shadow: var(--shadow-soft);
      min-height: 148px;
    }

    .warranty-item h3 {
      margin: 0 0 8px;
      font-size: 1rem;
      color: var(--text);
      line-height: 1.35;
    }

    .warranty-item p {
      margin: 0;
      color: var(--muted);
      line-height: 1.72;
    }

    .contact-panel {
      padding: 18px;
      border-radius: 22px;
      background: linear-gradient(180deg, rgba(122,35,64,0.07), rgba(255,255,255,0.8));
      border: 1px solid rgba(122, 35, 64, 0.12);
      box-shadow: var(--shadow-soft);
      position: sticky;
      top: 92px;
    }

    .contact-panel h3 {
      margin: 0 0 10px;
      font-size: 1.1rem;
      color: var(--brand);
    }

    .contact-list {
      display: grid;
      gap: 12px;
      margin-top: 14px;
    }

    .contact-row {
      padding: 14px 14px 13px;
      border-radius: 16px;
      background: rgba(255,255,255,0.72);
      border: 1px solid rgba(122, 35, 64, 0.10);
      color: var(--muted);
      line-height: 1.6;
    }

    .contact-row strong {
      display: block;
      margin-bottom: 4px;
      color: var(--text);
    }

    .contact-actions {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .contact-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 16px;
      border-radius: 14px;
      background: linear-gradient(145deg, var(--brand), #8b2c49);
      color: #fff7f1;
      font-weight: 700;
      box-shadow: 0 14px 28px rgba(122, 35, 64, 0.22);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .contact-link:hover,
    .contact-link:focus-visible {
      transform: translateY(-1px);
      box-shadow: 0 18px 34px rgba(122, 35, 64, 0.26);
      outline: none;
    }

    .wechat-card {
      margin-top: 14px;
      padding: 16px;
      border-radius: 18px;
      background: rgba(255,255,255,0.78);
      border: 1px solid rgba(122, 35, 64, 0.10);
    }

    .wechat-card h4 {
      margin: 0 0 10px;
      font-size: 0.98rem;
      color: var(--text);
    }

    .qr-wrap {
      border-radius: 18px;
      overflow: hidden;
      background: #fff;
      border: 1px solid rgba(122, 35, 64, 0.10);
      aspect-ratio: 1 / 1;
      width: min(100%, 290px);
      margin: 0 auto;
    }

    .qr-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

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

    .faq-item {
      border-radius: 18px;
      border: 1px solid rgba(122, 35, 64, 0.10);
      background: rgba(255,255,255,0.78);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 16px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-weight: 700;
      color: var(--text);
      outline: none;
    }

    .faq-item summary::-webkit-details-marker { display: none; }

    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: rgba(122, 35, 64, 0.08);
      color: var(--brand);
      font-size: 1.2rem;
      flex: 0 0 auto;
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .faq-item[open] summary::after {
      content: "–";
      transform: rotate(180deg);
      background: rgba(185, 138, 87, 0.14);
    }

    .faq-item p {
      margin: 0;
      padding: 0 18px 18px;
      color: var(--muted);
      line-height: 1.8;
    }

    .link-grid {
      padding: 18px;
    }

    .link-grid h2 {
      margin: 0 0 10px;
      font-size: 1.2rem;
      color: var(--text);
    }

    .link-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .link-list a {
      display: inline-flex;
      align-items: center;
      min-height: 42px;
      padding: 0 14px;
      border-radius: 999px;
      border: 1px solid rgba(122, 35, 64, 0.14);
      background: rgba(255,255,255,0.68);
      color: var(--brand);
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .link-list a:hover,
    .link-list a:focus-visible {
      transform: translateY(-1px);
      background: rgba(122, 35, 64, 0.08);
      outline: none;
    }

    .site-footer {
      padding: 10px 0 22px;
    }

    .footer-box {
      padding: 18px;
      display: grid;
      gap: 10px;
      color: var(--muted);
    }

    .footer-box strong {
      color: var(--text);
    }

    .footer-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 16px;
      align-items: center;
    }

    .footer-meta span {
      padding-right: 12px;
      position: relative;
    }

    .footer-meta span:not(:last-child)::after {
      content: "·";
      position: absolute;
      right: -3px;
      top: 0;
      color: rgba(112, 88, 77, 0.7);
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal.in-view {
      opacity: 1;
      transform: translateY(0);
    }

    .hero.reveal.in-view .hero-copy {
      animation: slideUp 0.8s ease both;
    }

    .hero.reveal.in-view .hero-visual {
      animation: slideUp 0.9s ease 0.06s both;
    }

    @keyframes slideUp {
      from { opacity: 0; transform: translateY(14px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
      .reveal {
        opacity: 1;
        transform: none;
      }
    }

    @media (max-width: 980px) {
      .hero-grid,
      .service-balance {
        grid-template-columns: 1fr;
      }

      .contact-panel {
        position: static;
      }

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

    @media (max-width: 780px) {
      .header-bar {
        flex-wrap: wrap;
      }

      .menu-btn {
        display: inline-flex;
      }

      .site-nav {
        display: none;
        width: 100%;
        order: 3;
        justify-content: flex-start;
        gap: 8px;
        padding-top: 6px;
      }

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

      .hero-points,
      .quick-grid,
      .services-grid,
      .solutions-grid,
      .warranty-grid {
        grid-template-columns: 1fr;
      }

      .hero-actions {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }
    }

    @media (max-width: 540px) {
      .container {
        width: min(1120px, calc(100% - 22px));
      }

      section {
        padding: 18px 0;
      }

      .hero-copy,
      .hero-visual,
      .toc-strip,
      .section-card,
      .contact-panel,
      .link-grid,
      .footer-box {
        border-radius: 18px;
      }

      .hero-copy {
        padding: 20px;
      }

      .visual-info,
      .mini-card,
      .service-item,
      .solution-card,
      .warranty-item,
      .contact-row {
        border-radius: 16px;
      }

      .faq-item summary {
        padding: 15px 16px;
      }

      .faq-item p {
        padding: 0 16px 16px;
      }

      .brand-text {
        font-size: 0.98rem;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }
    }