:root {
      --ink: #18312f;
      --muted: #5d706d;
      --soft: #eef5f1;
      --paper: #fbfaf5;
      --card: rgba(255, 255, 250, 0.88);
      --line: rgba(53, 99, 91, 0.18);
      --cyan: #2c776f;
      --deep: #0f4e49;
      --gold: #b58a48;
      --shadow: 0 20px 55px rgba(24, 49, 47, 0.12);
      --radius: 28px;
      --container: min(1120px, calc(100% - 36px));
    }

    * {
      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(--ink);
      background:
        radial-gradient(circle at 12% 8%, rgba(92, 152, 141, 0.18), transparent 28%),
        radial-gradient(circle at 88% 16%, rgba(181, 138, 72, 0.12), transparent 30%),
        linear-gradient(180deg, #f4f8f4 0%, #fbfaf5 42%, #edf5f1 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

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

    .container {
      width: var(--container);
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(251, 250, 245, 0.88);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line);
    }

    .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;
      letter-spacing: 0.06em;
      color: var(--deep);
      white-space: nowrap;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #ffffff;
      background: linear-gradient(145deg, #2c776f, #153f3b);
      box-shadow: 0 12px 26px rgba(44, 119, 111, 0.25);
      font-size: 22px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 22px;
      color: #294541;
      font-size: 15px;
    }

    .nav-links a {
      position: relative;
      padding: 8px 0;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 2px;
      width: 0;
      height: 2px;
      border-radius: 999px;
      background: var(--gold);
      transition: width 0.25s ease;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 18px;
      border-radius: 999px;
      color: #ffffff;
      background: var(--deep);
      box-shadow: 0 12px 24px rgba(15, 78, 73, 0.22);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 30px rgba(15, 78, 73, 0.28);
    }

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

    main {
      position: relative;
    }

    .hero {
      padding: 58px 0 44px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.75fr);
      gap: 34px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: var(--deep);
      background: rgba(44, 119, 111, 0.09);
      border: 1px solid rgba(44, 119, 111, 0.18);
      font-size: 14px;
      font-weight: 700;
    }

    h1 {
      margin: 18px 0 14px;
      font-size: clamp(34px, 6vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #122b29;
    }

    .lead {
      max-width: 680px;
      margin: 0;
      color: var(--muted);
      font-size: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 20px;
      border-radius: 16px;
      font-weight: 800;
      transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
    }

    .btn-primary {
      color: #ffffff;
      background: linear-gradient(135deg, #14534d, #2c776f);
      box-shadow: 0 14px 30px rgba(44, 119, 111, 0.24);
    }

    .btn-secondary {
      color: var(--deep);
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
    }

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

    .hero-note {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      color: #415955;
      font-size: 14px;
    }

    .hero-note span {
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.62);
      border: 1px solid rgba(53, 99, 91, 0.12);
    }

    .phone-card {
      position: relative;
      padding: 18px;
      border-radius: 34px;
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(237, 245, 241, 0.82));
      border: 1px solid rgba(255, 255, 255, 0.72);
      box-shadow: var(--shadow);
      overflow: hidden;
      animation: floatCard 5.5s ease-in-out infinite;
    }

    .phone-card::before {
      content: "";
      position: absolute;
      inset: 18px auto auto 18px;
      width: 100px;
      height: 100px;
      border-radius: 50%;
      background: rgba(181, 138, 72, 0.14);
      filter: blur(4px);
    }

    .phone-frame {
      position: relative;
      overflow: hidden;
      border-radius: 24px;
      background: #e8f1ee;
      aspect-ratio: 4 / 3;
      display: grid;
      place-items: center;
    }

    .phone-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      padding: 14px;
    }

    .quick-panel {
      margin-top: 16px;
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
    }

    .quick-panel div {
      padding: 12px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
    }

    .quick-panel strong {
      display: block;
      color: var(--deep);
      font-size: 18px;
      line-height: 1.2;
    }

    .quick-panel small {
      color: var(--muted);
    }

    .section {
      padding: 34px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.7fr) minmax(260px, 0.3fr);
      gap: 24px;
      align-items: end;
      margin-bottom: 22px;
    }

    .section-title {
      margin: 0;
      font-size: clamp(26px, 4vw, 38px);
      line-height: 1.22;
      color: #142f2d;
      letter-spacing: -0.02em;
    }

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

    .toc {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      padding: 14px;
      border-radius: 26px;
      background: rgba(255, 255, 255, 0.66);
      border: 1px solid var(--line);
      box-shadow: 0 14px 36px rgba(24, 49, 47, 0.07);
    }

    .toc a {
      padding: 13px 14px;
      border-radius: 18px;
      color: var(--deep);
      background: rgba(238, 245, 241, 0.76);
      font-weight: 700;
      text-align: center;
      transition: transform 0.22s ease, background 0.22s ease;
    }

    .toc a:hover {
      transform: translateY(-2px);
      background: #ffffff;
    }

    .ink-panel {
      padding: 26px;
      border-radius: var(--radius);
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(239, 247, 243, 0.84)),
        radial-gradient(circle at 90% 10%, rgba(44, 119, 111, 0.12), transparent 28%);
      border: 1px solid rgba(255, 255, 255, 0.75);
      box-shadow: var(--shadow);
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 14px;
    }

    .step {
      padding: 20px;
      border-radius: 24px;
      background: var(--card);
      border: 1px solid var(--line);
      transition: transform 0.24s ease, box-shadow 0.24s ease;
    }

    .step:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 34px rgba(24, 49, 47, 0.12);
    }

    .step b {
      display: inline-grid;
      place-items: center;
      width: 34px;
      height: 34px;
      margin-bottom: 12px;
      border-radius: 12px;
      color: #ffffff;
      background: var(--deep);
    }

    .step h3,
    .service-card h3,
    .solution-card h3,
    .guard-card h3 {
      margin: 0 0 8px;
      font-size: 19px;
      line-height: 1.35;
      color: #18312f;
    }

    .step p,
    .service-card p,
    .solution-card p,
    .guard-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .service-layout {
      display: grid;
      grid-template-columns: 0.88fr 1.12fr;
      gap: 18px;
      align-items: stretch;
    }

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

    .service-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.74);
      border: 1px solid var(--line);
      color: #294541;
    }

    .service-list li::before {
      content: "水";
      flex: 0 0 auto;
      width: 24px;
      height: 24px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #ffffff;
      background: #2c776f;
      font-size: 12px;
      margin-top: 2px;
    }

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

    .service-card,
    .solution-card,
    .guard-card {
      padding: 22px;
      border-radius: 24px;
      background: rgba(255, 255, 255, 0.76);
      border: 1px solid var(--line);
      box-shadow: 0 10px 26px rgba(24, 49, 47, 0.06);
    }

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

    .solution-card {
      position: relative;
      overflow: hidden;
    }

    .solution-card::before {
      content: "";
      position: absolute;
      left: 22px;
      top: 0;
      width: 38px;
      height: 5px;
      border-radius: 999px;
      background: var(--gold);
    }

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

    .policy-list {
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 9px;
      color: var(--muted);
      font-size: 14px;
    }

    .policy-list li {
      padding-left: 16px;
      position: relative;
    }

    .policy-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0.72em;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--cyan);
    }

    .contact-wrap {
      display: grid;
      grid-template-columns: 1fr 0.86fr;
      gap: 18px;
      align-items: start;
    }

    .contact-info {
      display: grid;
      gap: 14px;
    }

    .contact-row {
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid var(--line);
    }

    .contact-row span {
      display: block;
      color: var(--muted);
      font-size: 14px;
    }

    .contact-row strong {
      color: #142f2d;
      font-size: 18px;
    }

    .qr-box {
      padding: 22px;
      border-radius: 28px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 16px 36px rgba(24, 49, 47, 0.1);
    }

    .qr-img {
      overflow: hidden;
      border-radius: 22px;
      background: #eef5f1;
      border: 1px solid var(--line);
    }

    .qr-box p {
      margin: 14px 0 0;
      color: var(--muted);
    }

    .map-link {
      display: inline-flex;
      margin-top: 14px;
      padding: 10px 14px;
      border-radius: 14px;
      color: #ffffff;
      background: var(--deep);
      font-weight: 800;
    }

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

    .faq-item {
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      overflow: hidden;
    }

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

    .faq-btn span:last-child {
      color: var(--deep);
      font-size: 22px;
      transition: transform 0.22s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      color: var(--muted);
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .faq-item.active .faq-btn span:last-child {
      transform: rotate(45deg);
    }

    .summary {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 22px;
      align-items: center;
      padding: 28px;
      border-radius: 30px;
      background: linear-gradient(135deg, #164f49, #2c776f);
      color: #ffffff;
      box-shadow: 0 18px 46px rgba(15, 78, 73, 0.24);
    }

    .summary h2 {
      margin: 0 0 8px;
      font-size: clamp(24px, 3.5vw, 34px);
      line-height: 1.25;
      color: #ffffff;
    }

    .summary p {
      margin: 0;
      color: rgba(255, 255, 255, 0.86);
    }

    .summary .btn {
      color: var(--deep);
      background: #fff8e7;
      white-space: nowrap;
    }

    .site-footer {
      margin-top: 28px;
      padding: 26px 0;
      background: #f3f7f3;
      border-top: 1px solid var(--line);
      color: #294541;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 22px;
      align-items: center;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 18px;
      justify-content: flex-end;
      font-size: 14px;
    }

    .footer-links a {
      color: #315b56;
    }

    .copyright {
      margin: 6px 0 0;
      color: #647773;
      font-size: 13px;
    }

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

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

    @keyframes floatCard {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(-8px);
      }
    }

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

      .nav-links {
        position: absolute;
        left: 18px;
        right: 18px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 14px;
        border-radius: 22px;
        background: #ffffff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

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

      .nav-links a,
      .nav-cta {
        text-align: center;
      }

      .hero-grid,
      .section-head,
      .service-layout,
      .contact-wrap,
      .summary,
      .footer-grid {
        grid-template-columns: 1fr;
      }

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

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

      .summary .btn {
        justify-self: start;
      }

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

    @media (max-width: 620px) {
      :root {
        --container: min(100% - 28px, 1120px);
      }

      .hero {
        padding-top: 34px;
      }

      .steps,
      .service-cards,
      .solution-grid,
      .guard-grid,
      .toc,
      .quick-panel {
        grid-template-columns: 1fr;
      }

      .ink-panel {
        padding: 18px;
      }

      .section {
        padding: 26px 0;
      }

      .nav {
        min-height: 66px;
      }

      .nav-links {
        top: 66px;
      }
    }