:root {
      --bg: #f6f8ef;
      --bg-soft: #edf4e5;
      --surface: #ffffff;
      --surface-green: #f9fcf5;
      --text: #223126;
      --muted: #657267;
      --primary: #2f7d4b;
      --primary-dark: #1f5e39;
      --accent: #c58b42;
      --line: #dce8d4;
      --shadow: 0 18px 45px rgba(48, 92, 55, 0.12);
      --radius-lg: 28px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --container: 1160px;
    }

    * {
      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% 4%, rgba(155, 194, 121, 0.35), transparent 32%),
        radial-gradient(circle at 84% 12%, rgba(207, 225, 178, 0.52), transparent 31%),
        linear-gradient(180deg, #fbfcf6 0%, var(--bg) 48%, #f9faf2 100%);
      line-height: 1.7;
      overflow-x: hidden;
    }

    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(249, 252, 245, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(207, 224, 198, 0.78);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--primary-dark);
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 22px;
      background: linear-gradient(135deg, #2f7d4b, #8fb56d);
      box-shadow: 0 12px 24px rgba(47, 125, 75, 0.22);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      color: #354638;
      font-size: 15px;
    }

    .nav-links a {
      padding: 9px 12px;
      border-radius: 999px;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-links a:hover {
      background: #e8f1df;
      color: var(--primary-dark);
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 16px;
      border-radius: 999px;
      color: #ffffff;
      background: var(--primary);
      font-weight: 700;
      box-shadow: 0 12px 24px rgba(47, 125, 75, 0.2);
      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(47, 125, 75, 0.26);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      color: var(--text);
      border-radius: 12px;
      padding: 9px 12px;
      font-weight: 700;
    }

    main {
      background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.42), rgba(237, 244, 229, 0.3)),
        repeating-linear-gradient(135deg, rgba(84, 133, 82, 0.035) 0, rgba(84, 133, 82, 0.035) 1px, transparent 1px, transparent 18px);
    }

    section {
      padding: 58px 0;
    }

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

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
      gap: 34px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid #cfe0c6;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.78);
      color: var(--primary-dark);
      font-size: 14px;
      font-weight: 700;
      box-shadow: 0 8px 22px rgba(54, 93, 53, 0.08);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #6eaa59;
      box-shadow: 0 0 0 5px rgba(110, 170, 89, 0.16);
    }

    h1 {
      margin: 18px 0 18px;
      font-size: clamp(34px, 5.3vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #17281c;
    }

    .hero-lead {
      max-width: 680px;
      margin: 0;
      font-size: 18px;
      color: #4d5d50;
    }

    .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 18px;
      border-radius: 14px;
      font-weight: 800;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
      cursor: pointer;
      border: 0;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), #6fa55b);
      color: #ffffff;
      box-shadow: 0 14px 26px rgba(47, 125, 75, 0.22);
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--primary-dark);
      border: 1px solid #cfe0c6;
    }

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

    .hero-note {
      margin-top: 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .hero-panel {
      position: relative;
      padding: 22px;
      border-radius: 34px;
      background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(238, 247, 231, 0.9));
      border: 1px solid rgba(207, 224, 198, 0.9);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      inset: -80px -80px auto auto;
      width: 190px;
      height: 190px;
      border-radius: 50%;
      background: rgba(122, 167, 91, 0.22);
    }

    .device-card {
      position: relative;
      border-radius: 24px;
      background: #fff;
      border: 1px solid #e2edd8;
      padding: 22px;
      z-index: 1;
    }

    .device-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }

    .wifi-icon {
      width: 78px;
      height: 78px;
      border-radius: 22px;
      display: grid;
      place-items: center;
      background: #edf6e7;
      color: var(--primary-dark);
      position: relative;
    }

    .wifi-icon span {
      position: absolute;
      border: 3px solid var(--primary);
      border-left-color: transparent;
      border-right-color: transparent;
      border-bottom-color: transparent;
      border-radius: 50%;
      animation: pulseWifi 2.8s ease-in-out infinite;
    }

    .wifi-icon span:nth-child(1) {
      width: 50px;
      height: 50px;
      top: 24px;
    }

    .wifi-icon span:nth-child(2) {
      width: 34px;
      height: 34px;
      top: 34px;
      animation-delay: 0.3s;
    }

    .wifi-icon span:nth-child(3) {
      width: 10px;
      height: 10px;
      top: 54px;
      border: 0;
      background: var(--primary);
      animation-delay: 0.6s;
    }

    @keyframes pulseWifi {
      0%, 100% { opacity: 0.45; transform: translateY(0); }
      50% { opacity: 1; transform: translateY(-2px); }
    }

    .status-pill {
      padding: 8px 11px;
      border-radius: 999px;
      background: #fff8ea;
      color: #7b5421;
      font-size: 13px;
      font-weight: 800;
      border: 1px solid #ead7b4;
    }

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

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px;
      background: #f8fbf4;
      border: 1px solid #e2edd8;
      border-radius: 14px;
      color: #3d4b40;
      font-size: 15px;
    }

    .check-list li::before {
      content: "✓";
      display: inline-grid;
      place-items: center;
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #dfeeda;
      color: var(--primary-dark);
      font-weight: 900;
      line-height: 1;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 26px;
    }

    .section-kicker {
      color: var(--primary);
      font-weight: 900;
      font-size: 14px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    h2 {
      margin: 8px 0 0;
      font-size: clamp(26px, 3.6vw, 40px);
      line-height: 1.18;
      letter-spacing: -0.03em;
      color: #1c2a20;
    }

    .section-desc {
      max-width: 430px;
      margin: 0;
      color: var(--muted);
    }

    .toc {
      padding: 28px;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: 0 12px 34px rgba(61, 89, 52, 0.08);
    }

    .toc-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .toc-grid a {
      display: block;
      padding: 14px;
      border-radius: 16px;
      background: var(--surface-green);
      border: 1px solid #e1ecd7;
      color: #2c4933;
      font-weight: 800;
      text-align: center;
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .toc-grid a:hover {
      transform: translateY(-2px);
      background: #e7f2df;
    }

    .service-layout {
      display: grid;
      grid-template-columns: 0.95fr 1.05fr;
      gap: 24px;
      align-items: start;
    }

    .image-frame {
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: #e9f1df;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .image-frame img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .image-caption {
      padding: 14px 18px;
      color: #4e5f52;
      background: #ffffff;
      font-size: 14px;
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .card {
      padding: 22px;
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      box-shadow: 0 12px 30px rgba(61, 89, 52, 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 38px rgba(61, 89, 52, 0.13);
      border-color: #bfd7b2;
    }

    .card h3 {
      margin: 0 0 10px;
      font-size: 19px;
      color: #1d321f;
    }

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

    .leaf-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      margin-bottom: 14px;
      border-radius: 14px 14px 14px 4px;
      background: #e5f1dc;
      color: var(--primary-dark);
      font-weight: 900;
    }

    .solution {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 22px;
      align-items: start;
    }

    .step-box {
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 12px 34px rgba(61, 89, 52, 0.08);
    }

    .step-box h3 {
      margin: 0 0 16px;
      font-size: 22px;
    }

    .steps {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
      counter-reset: step;
    }

    .steps li {
      counter-increment: step;
      position: relative;
      padding: 14px 14px 14px 52px;
      border-radius: 16px;
      background: #f8fbf3;
      border: 1px solid #e2edd8;
      color: #405043;
    }

    .steps li::before {
      content: counter(step);
      position: absolute;
      left: 14px;
      top: 14px;
      width: 26px;
      height: 26px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--primary);
      color: #fff;
      font-size: 13px;
      font-weight: 900;
    }

    .notice {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, #2f7d4b, #5d9652);
      color: #ffffff;
      box-shadow: 0 18px 40px rgba(47, 125, 75, 0.22);
    }

    .notice h3 {
      margin: 0 0 10px;
      font-size: 22px;
      color: #ffffff;
    }

    .notice p {
      margin: 0;
      color: rgba(255, 255, 255, 0.92);
    }

    .notice ul {
      margin: 16px 0 0;
      padding-left: 18px;
      color: rgba(255, 255, 255, 0.95);
    }

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

    .guarantee-item {
      padding: 20px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.88);
      border: 1px solid var(--line);
      text-align: center;
    }

    .guarantee-item strong {
      display: block;
      color: var(--primary-dark);
      font-size: 18px;
      margin-bottom: 6px;
    }

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

    .contact-panel {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      padding: 30px;
      border-radius: 32px;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(238, 247, 231, 0.92));
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      align-items: start;
    }

    .info-list {
      display: grid;
      gap: 12px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .info-list li {
      padding: 14px 16px;
      border-radius: 16px;
      background: #ffffff;
      border: 1px solid #e2edd8;
      color: #3d4b40;
    }

    .map-link {
      display: inline-flex;
      margin-top: 16px;
      color: #ffffff;
      background: var(--primary-dark);
      padding: 11px 15px;
      border-radius: 14px;
      font-weight: 800;
    }

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

    .related a {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 14px 16px;
      background: #ffffff;
      border: 1px solid #e2edd8;
      border-radius: 16px;
      color: #315035;
      font-weight: 700;
      transition: transform 0.2s ease, background 0.2s ease;
    }

    .related a:hover {
      transform: translateX(3px);
      background: #f2f8ec;
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.9);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      text-align: left;
      background: transparent;
      color: #203123;
      font-size: 16px;
      font-weight: 900;
      cursor: pointer;
    }

    .faq-question span {
      flex: 1;
    }

    .faq-question::after {
      content: "+";
      flex: 0 0 28px;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #e6f0dc;
      color: var(--primary-dark);
      font-weight: 900;
    }

    .faq-item.active .faq-question::after {
      content: "−";
    }

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

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

    .summary-box {
      padding: 30px;
      border-radius: 32px;
      background: #fffaf0;
      border: 1px solid #ead7b4;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 20px;
      align-items: center;
    }

    .summary-box h2 {
      margin: 0 0 10px;
    }

    .summary-box p {
      margin: 0;
      color: #695a44;
    }

    .site-footer {
      background: #213426;
      color: #eef6ea;
      padding: 30px 0;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      align-items: center;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 900;
    }

    .footer-mark {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: #e9f3df;
      color: var(--primary-dark);
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      color: #d9e7d4;
      font-size: 14px;
    }

    .footer-links a {
      color: #d9e7d4;
    }

    .copyright {
      color: #c7d8c1;
      font-size: 13px;
      margin-top: 8px;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

    @media (max-width: 980px) {
      .nav-links,
      .nav-action {
        display: none;
      }

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

      .nav.open {
        align-items: flex-start;
        padding: 14px 0;
        flex-wrap: wrap;
      }

      .nav.open .nav-links {
        order: 3;
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
      }

      .nav.open .nav-action {
        order: 4;
        display: inline-flex;
      }

      .hero-grid,
      .service-layout,
      .solution,
      .contact-panel {
        grid-template-columns: 1fr;
      }

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

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

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

      .section-head {
        align-items: flex-start;
        flex-direction: column;
      }
    }

    @media (max-width: 640px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      section {
        padding: 42px 0;
      }

      .hero {
        padding: 48px 0 38px;
      }

      .toc-grid,
      .cards,
      .guarantee-strip {
        grid-template-columns: 1fr;
      }

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

      .btn {
        width: 100%;
      }

      .contact-panel,
      .summary-box,
      .toc {
        padding: 22px;
      }

      .summary-box {
        grid-template-columns: 1fr;
      }

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