:root {
      --bg: #fbf7ef;
      --panel: #ffffff;
      --panel-soft: #fffaf2;
      --text: #24211d;
      --muted: #6f675d;
      --line: #eadfce;
      --accent: #b56a31;
      --accent-strong: #8f4c1f;
      --green: #496f58;
      --shadow: 0 18px 50px rgba(79, 55, 32, 0.12);
      --radius: 24px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(233, 188, 126, 0.32), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(131, 164, 121, 0.2), transparent 26%),
        linear-gradient(180deg, #fff9ef 0%, var(--bg) 46%, #f7efe3 100%);
      line-height: 1.75;
    }

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

    .container {
      width: min(100% - 32px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 249, 239, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(234, 223, 206, 0.85);
    }

    .nav {
      min-height: 68px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: #2b241d;
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: linear-gradient(135deg, var(--accent), var(--green));
      box-shadow: 0 8px 22px rgba(143, 76, 31, 0.22);
      font-size: 18px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 22px;
      color: #51483e;
      font-size: 15px;
    }

    .nav-links a {
      transition: color 0.2s ease;
    }

    .nav-links a:hover {
      color: var(--accent-strong);
    }

    .menu-btn {
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      color: var(--text);
      border-radius: 999px;
      padding: 9px 13px;
      font: inherit;
      cursor: pointer;
    }

    .hero {
      padding: 72px 0 54px;
    }

    .hero-wrap {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.72fr);
      gap: 34px;
      align-items: stretch;
    }

    .hero-copy {
      padding: 42px;
      border: 1px solid var(--line);
      border-radius: calc(var(--radius) + 10px);
      background: rgba(255, 255, 255, 0.66);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      width: 210px;
      height: 210px;
      right: -86px;
      top: -92px;
      border-radius: 50%;
      background: rgba(181, 106, 49, 0.13);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: #f4eadb;
      color: var(--accent-strong);
      font-size: 14px;
      font-weight: 700;
    }

    h1 {
      margin: 20px 0 18px;
      font-size: clamp(32px, 6vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #201b16;
    }

    .hero-text {
      max-width: 760px;
      margin: 0;
      color: #5d5348;
      font-size: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 760;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    }

    .btn-primary {
      background: #2c241c;
      color: #ffffff;
      box-shadow: 0 14px 24px rgba(44, 36, 28, 0.18);
    }

    .btn-secondary {
      background: #ffffff;
      color: #3b3127;
      border: 1px solid var(--line);
    }

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

    .hero-note {
      padding: 28px;
      border-radius: calc(var(--radius) + 4px);
      background: linear-gradient(180deg, #fffdf8, #f3eadb);
      border: 1px solid var(--line);
      box-shadow: 0 16px 34px rgba(79, 55, 32, 0.1);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 18px;
    }

    .water-card {
      border-radius: 22px;
      padding: 22px;
      background: #ffffff;
      border: 1px solid #ead8c0;
    }

    .water-card strong {
      display: block;
      font-size: 18px;
      margin-bottom: 10px;
      color: #312820;
    }

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

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

    .quick-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: #50473e;
    }

    .dot {
      width: 9px;
      height: 9px;
      margin-top: 10px;
      border-radius: 50%;
      background: var(--green);
      flex: 0 0 auto;
    }

    section {
      padding: 34px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 22px;
    }

    .section-head h2 {
      margin: 0;
      font-size: clamp(24px, 4vw, 36px);
      line-height: 1.18;
      letter-spacing: -0.03em;
      color: #211b16;
    }

    .section-head p {
      margin: 0;
      max-width: 520px;
      color: var(--muted);
    }

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

    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.76);
      padding: 24px;
      box-shadow: 0 12px 28px rgba(79, 55, 32, 0.08);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 36px rgba(79, 55, 32, 0.13);
      border-color: #dec6a7;
    }

    .card h3 {
      margin: 0 0 10px;
      font-size: 19px;
      line-height: 1.35;
      color: #2c241d;
    }

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

    .steps {
      display: grid;
      gap: 12px;
      counter-reset: step;
    }

    .step {
      counter-increment: step;
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 16px;
      align-items: start;
      padding: 20px;
      border-radius: 22px;
      background: #fffdf8;
      border: 1px solid var(--line);
    }

    .step::before {
      content: counter(step);
      width: 34px;
      height: 34px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: #e7d5bd;
      color: #4c351f;
      font-weight: 800;
    }

    .step h3 {
      margin: 0 0 6px;
      font-size: 18px;
      color: #2c241d;
    }

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

    .split {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
      gap: 18px;
      align-items: start;
    }

    .soft-panel {
      border-radius: calc(var(--radius) + 6px);
      padding: 28px;
      background: linear-gradient(145deg, #f8edda, #fffdf8);
      border: 1px solid var(--line);
    }

    .soft-panel h2 {
      margin: 0 0 14px;
      font-size: clamp(24px, 4vw, 34px);
      line-height: 1.2;
    }

    .soft-panel p {
      margin: 0 0 16px;
      color: var(--muted);
    }

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

    .check-list li {
      padding: 14px 16px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid rgba(234, 223, 206, 0.9);
      color: #4f463c;
    }

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

    details {
      border: 1px solid var(--line);
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.78);
      padding: 18px 20px;
    }

    summary {
      cursor: pointer;
      font-weight: 800;
      color: #2c241d;
      list-style: none;
    }

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

    details p {
      margin: 12px 0 0;
      color: var(--muted);
    }

    .cta {
      padding-bottom: 42px;
    }

    .cta-box {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 22px;
      align-items: center;
      border-radius: calc(var(--radius) + 8px);
      padding: 30px;
      background: #2e281f;
      color: #fff7ea;
      box-shadow: 0 20px 48px rgba(44, 36, 28, 0.2);
    }

    .cta-box h2 {
      margin: 0 0 8px;
      font-size: clamp(24px, 4vw, 34px);
      line-height: 1.2;
    }

    .cta-box p {
      margin: 0;
      color: #e7d8c6;
    }

    .cta-box .btn {
      background: #f2d2a8;
      color: #2e281f;
      box-shadow: none;
      white-space: nowrap;
    }

    .site-footer {
      border-top: 1px solid var(--line);
      background: #fffaf2;
      color: #3a332c;
      padding: 24px 0;
    }

    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .footer-links a {
      color: #5a4d41;
    }

    .reveal {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.55s ease, transform 0.55s ease;
    }

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

    @media (max-width: 860px) {
      .menu-btn {
        display: inline-flex;
      }

      .nav {
        position: relative;
      }

      .nav-links {
        position: absolute;
        left: 0;
        right: 0;
        top: 68px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: #fffdf8;
        box-shadow: var(--shadow);
      }

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

      .nav-links a {
        padding: 12px 14px;
        border-radius: 12px;
      }

      .nav-links a:hover {
        background: #f4eadb;
      }

      .hero {
        padding-top: 42px;
      }

      .hero-wrap,
      .split,
      .cta-box {
        grid-template-columns: 1fr;
      }

      .hero-copy {
        padding: 30px 24px;
      }

      .grid-3 {
        grid-template-columns: 1fr;
      }

      .section-head {
        display: block;
      }

      .section-head p {
        margin-top: 10px;
      }

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

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

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      .btn,
      .card,
      .reveal {
        transition: none;
      }

      .reveal {
        opacity: 1;
        transform: none;
      }
    }