:root {
      --bg: #f5f7f1;
      --bg-soft: #eef3e8;
      --panel: #ffffff;
      --panel-green: #e3ebdc;
      --text: #1f2a24;
      --muted: #647268;
      --deep: #234437;
      --green: #4f7b5b;
      --green-dark: #2f5b44;
      --accent: #b08a4a;
      --line: #d8e1d2;
      --shadow: 0 18px 45px rgba(39, 72, 55, 0.12);
      --radius: 8px;
      --container: 1120px;
    }

    * {
      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% 8%, rgba(127, 158, 113, 0.18), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(176, 138, 74, 0.14), transparent 26%),
        linear-gradient(180deg, #f7f8f3 0%, var(--bg) 44%, #eef3e8 100%);
      line-height: 1.72;
    }

    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: 20;
      background: rgba(245, 247, 241, 0.92);
      border-bottom: 1px solid rgba(216, 225, 210, 0.9);
      backdrop-filter: blur(14px);
    }

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

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--deep);
      white-space: nowrap;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: linear-gradient(135deg, var(--green-dark), #779365);
      box-shadow: 0 10px 22px rgba(47, 91, 68, 0.22);
      font-size: 22px;
      letter-spacing: 0;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 22px;
      color: #405149;
      font-size: 15px;
    }

    .nav-links a {
      padding: 6px 0;
      border-bottom: 2px solid transparent;
      transition: color 0.2s ease, border-color 0.2s ease;
    }

    .nav-links a:hover {
      color: var(--green-dark);
      border-color: var(--accent);
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 8px 16px;
      border-radius: 999px;
      background: var(--deep);
      color: #fff;
      font-weight: 700;
      box-shadow: 0 12px 24px rgba(35, 68, 55, 0.18);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      white-space: nowrap;
    }

    .nav-action:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 30px rgba(35, 68, 55, 0.24);
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      color: var(--deep);
      font-size: 22px;
    }

    main {
      overflow: hidden;
    }

    .hero {
      padding: 54px 0 42px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(300px, 0.78fr);
      gap: 36px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 12px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.72);
      color: var(--green-dark);
      font-size: 14px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
    }

    h1 {
      margin: 18px 0 16px;
      color: #183027;
      font-size: clamp(32px, 5vw, 56px);
      line-height: 1.12;
      letter-spacing: 0;
    }

    .hero-copy {
      max-width: 650px;
      margin: 0 0 24px;
      color: #4d5d54;
      font-size: 18px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 10px 18px;
      border-radius: 999px;
      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: linear-gradient(135deg, var(--green-dark), var(--green));
      color: #fff;
      box-shadow: 0 16px 32px rgba(47, 91, 68, 0.22);
    }

    .btn-secondary {
      background: #fff;
      color: var(--deep);
      border-color: var(--line);
    }

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

    .hero-notes {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      max-width: 680px;
    }

    .note {
      padding: 14px 16px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.68);
      color: #405149;
      font-size: 14px;
    }

    .visual-panel {
      position: relative;
      padding: 16px;
      border: 1px solid rgba(216, 225, 210, 0.9);
      border-radius: 26px 8px 26px 8px;
      background: linear-gradient(145deg, rgba(255,255,255,0.88), rgba(228,236,220,0.72));
      box-shadow: var(--shadow);
    }

    .visual-panel::before {
      content: "";
      position: absolute;
      inset: 18px auto auto -14px;
      width: 92px;
      height: 92px;
      border-radius: 50%;
      background: rgba(176, 138, 74, 0.16);
      z-index: -1;
      animation: floaty 5.5s ease-in-out infinite;
    }

    .phone-frame {
      overflow: hidden;
      border-radius: 20px 8px 20px 8px;
      background: #eef3e8;
      aspect-ratio: 4 / 3;
    }

    .phone-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: 10px;
    }

    .hero-card {
      margin-top: 14px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 14px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
    }

    .hero-card strong {
      display: block;
      color: var(--deep);
    }

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

    .pill {
      padding: 7px 10px;
      border-radius: 999px;
      background: var(--panel-green);
      color: var(--green-dark);
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    section {
      padding: 46px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.8fr) minmax(260px, 0.55fr);
      gap: 24px;
      align-items: end;
      margin-bottom: 24px;
    }

    .section-head h2 {
      margin: 0;
      color: #20382e;
      font-size: clamp(24px, 3vw, 36px);
      line-height: 1.22;
      letter-spacing: 0;
    }

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

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

    .service-item {
      padding: 22px 18px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255,255,255,0.78);
      box-shadow: 0 10px 26px rgba(50, 80, 58, 0.08);
      transition: transform 0.2s ease, border-color 0.2s ease;
    }

    .service-item:hover {
      transform: translateY(-4px);
      border-color: rgba(79, 123, 91, 0.5);
    }

    .service-item h3 {
      margin: 0 0 8px;
      color: var(--deep);
      font-size: 18px;
    }

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

    .solution {
      background:
        linear-gradient(180deg, rgba(227, 235, 220, 0.68), rgba(245, 247, 241, 0.7));
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .solution-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.55fr);
      gap: 24px;
      align-items: start;
    }

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

    .step {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 14px;
      padding: 18px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
    }

    .step-number {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--green-dark);
      color: #fff;
      font-weight: 800;
    }

    .step h3 {
      margin: 0 0 4px;
      font-size: 18px;
      color: var(--deep);
    }

    .step p {
      margin: 0;
      color: var(--muted);
    }

    .aside-panel {
      padding: 22px;
      border-radius: 22px 8px 22px 8px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .aside-panel h3 {
      margin: 0 0 12px;
      color: var(--deep);
      font-size: 20px;
    }

    .check-list {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
      color: #45564d;
    }

    .check-list li {
      display: grid;
      grid-template-columns: 22px 1fr;
      gap: 8px;
      align-items: start;
    }

    .check-list li::before {
      content: "✓";
      width: 22px;
      height: 22px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--panel-green);
      color: var(--green-dark);
      font-weight: 900;
      font-size: 13px;
    }

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

    .guarantee-card {
      padding: 20px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255,255,255,0.74);
    }

    .guarantee-card h3 {
      margin: 0 0 10px;
      color: var(--deep);
      font-size: 18px;
    }

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

    .contact-band {
      padding: 28px;
      border-radius: 24px 8px 24px 8px;
      background:
        linear-gradient(135deg, rgba(255,255,255,0.9), rgba(227,235,220,0.92));
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
      gap: 26px;
      align-items: center;
    }

    .contact-info h2 {
      margin: 0 0 12px;
      color: var(--deep);
      font-size: clamp(24px, 3vw, 34px);
      line-height: 1.25;
    }

    .contact-info p {
      margin: 8px 0;
      color: #485950;
    }

    .contact-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .qr-card {
      display: grid;
      gap: 10px;
      justify-items: center;
      padding: 14px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
      text-align: center;
      color: var(--muted);
      font-size: 14px;
    }

    .qr-card img {
      width: 180px;
      aspect-ratio: 1 / 1;
      object-fit: contain;
      border-radius: 8px;
      border: 1px solid var(--line);
      background: #fff;
    }

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

    details {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255,255,255,0.78);
      overflow: hidden;
    }

    summary {
      cursor: pointer;
      padding: 18px 20px;
      font-weight: 800;
      color: var(--deep);
      list-style: none;
    }

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

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

    .links-wrap {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px 18px;
      padding: 20px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: rgba(255,255,255,0.72);
    }

    .links-wrap a {
      color: #315f48;
      font-size: 15px;
      border-bottom: 1px solid transparent;
      width: fit-content;
    }

    .links-wrap a:hover {
      border-color: var(--accent);
    }

    .site-footer {
      margin-top: 10px;
      padding: 28px 0;
      background: #e7eee1;
      border-top: 1px solid #d3ddcc;
      color: #26352e;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: center;
      flex-wrap: wrap;
      font-size: 14px;
    }

    .footer-inner a {
      color: #2f5b44;
      font-weight: 700;
    }

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

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

    @keyframes floaty {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(12px);
      }
    }

    @media (max-width: 900px) {
      .menu-toggle {
        display: inline-grid;
        place-items: center;
      }

      .nav {
        min-height: 66px;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 14px;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: #fff;
        box-shadow: var(--shadow);
      }

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

      .nav-links a {
        padding: 10px 8px;
      }

      .nav-action {
        display: none;
      }

      .hero-grid,
      .solution-grid,
      .contact-band,
      .section-head {
        grid-template-columns: 1fr;
      }

      .hero {
        padding-top: 34px;
      }

      .hero-notes,
      .service-strip,
      .guarantee-grid {
        grid-template-columns: 1fr;
      }

      .contact-band {
        padding: 20px;
      }

      .links-wrap {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      section {
        padding: 36px 0;
      }

      .hero-actions,
      .contact-links {
        align-items: stretch;
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

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

      .qr-card img {
        width: 160px;
      }
    }