:root {
      --bg: #08140f;
      --bg-2: #10251b;
      --panel: rgba(246, 241, 225, 0.94);
      --panel-soft: rgba(233, 226, 204, 0.88);
      --text: #1b241e;
      --muted: #5a665d;
      --forest: #1f5a3b;
      --forest-deep: #123725;
      --moss: #9bbf77;
      --gold: #d6b56d;
      --line: rgba(28, 57, 39, 0.18);
      --white: #fffaf0;
      --shadow: 0 22px 60px rgba(0, 0, 0, 0.22);
      --radius: 8px;
      --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% 0%, rgba(155, 191, 119, 0.22), transparent 34%),
        radial-gradient(circle at 86% 12%, rgba(214, 181, 109, 0.16), transparent 28%),
        linear-gradient(160deg, #08140f 0%, #11261c 38%, #e7debf 38.2%, #f6f0dc 100%);
      line-height: 1.7;
      overflow-x: hidden;
    }

    body.menu-open {
      overflow: hidden;
    }

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

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

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(8, 20, 15, 0.86);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(246, 250, 240, 0.12);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: var(--white);
      font-weight: 800;
      letter-spacing: 0;
      flex: 0 0 auto;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 8px;
      background: linear-gradient(145deg, #d7bb73, #edf2c1);
      color: #17331f;
      box-shadow: 0 10px 24px rgba(214, 181, 109, 0.22);
      font-size: 22px;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 1px;
    }

    .brand-text strong {
      font-size: 16px;
      line-height: 1.2;
    }

    .brand-text span {
      font-size: 12px;
      color: rgba(255, 250, 240, 0.72);
      font-weight: 500;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      color: rgba(255, 250, 240, 0.82);
      font-size: 14px;
    }

    .nav-links a {
      padding: 10px 12px;
      border-radius: 8px;
      transition: background 0.2s ease, color 0.2s ease;
      white-space: nowrap;
    }

    .nav-links a:hover {
      background: rgba(255, 250, 240, 0.1);
      color: var(--white);
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 0 16px;
      border-radius: 8px;
      background: var(--gold);
      color: #17331f;
      font-weight: 700;
      white-space: nowrap;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .nav-action:hover {
      transform: translateY(-1px);
      box-shadow: 0 12px 26px rgba(214, 181, 109, 0.24);
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid rgba(255, 250, 240, 0.18);
      border-radius: 8px;
      background: rgba(255, 250, 240, 0.08);
      color: var(--white);
      cursor: pointer;
    }

    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 5px auto;
      background: currentColor;
      border-radius: 4px;
    }

    .hero {
      color: var(--white);
      padding: 66px 0 42px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
      gap: 36px;
      align-items: start;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid rgba(214, 181, 109, 0.34);
      border-radius: 8px;
      background: rgba(246, 250, 240, 0.08);
      color: #f3df9a;
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--moss);
      box-shadow: 0 0 0 5px rgba(155, 191, 119, 0.12);
    }

    h1 {
      margin: 22px 0 16px;
      max-width: 740px;
      font-size: clamp(34px, 5vw, 60px);
      line-height: 1.08;
      letter-spacing: 0;
    }

    .hero p {
      max-width: 680px;
      margin: 0;
      color: rgba(255, 250, 240, 0.82);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 8px;
      font-weight: 800;
      border: 1px solid transparent;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn-primary {
      background: linear-gradient(135deg, #d6b56d, #f0df9f);
      color: #142f20;
      box-shadow: 0 18px 34px rgba(214, 181, 109, 0.22);
    }

    .btn-secondary {
      background: rgba(255, 250, 240, 0.08);
      color: var(--white);
      border-color: rgba(255, 250, 240, 0.22);
    }

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

    .hero-card {
      position: relative;
      padding: 22px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, rgba(246, 240, 220, 0.98), rgba(230, 221, 194, 0.92));
      color: var(--text);
      box-shadow: var(--shadow);
      overflow: hidden;
      isolation: isolate;
    }

    .hero-card::before {
      content: "";
      position: absolute;
      inset: -80px -70px auto auto;
      width: 190px;
      height: 190px;
      border-radius: 50%;
      background: rgba(155, 191, 119, 0.32);
      z-index: -1;
      animation: breathe 7s ease-in-out infinite;
    }

    .device-frame {
      aspect-ratio: 4 / 3;
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(18, 55, 37, 0.95), rgba(54, 91, 62, 0.9)),
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 12px);
      display: grid;
      place-items: center;
      padding: 18px;
      border: 1px solid rgba(18, 55, 37, 0.18);
    }

    .device-frame img {
      max-height: 100%;
      object-fit: contain;
      border-radius: 6px;
      filter: drop-shadow(0 20px 26px rgba(0, 0, 0, 0.25));
    }

    .quick-check {
      margin-top: 18px;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }

    .check-item {
      padding: 12px;
      border-radius: 8px;
      background: rgba(255, 250, 240, 0.68);
      border: 1px solid var(--line);
    }

    .check-item strong {
      display: block;
      color: var(--forest-deep);
      font-size: 15px;
      line-height: 1.3;
    }

    .check-item span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.5;
    }

    .section {
      padding: 42px 0;
    }

    .section-header {
      display: grid;
      grid-template-columns: minmax(0, 0.72fr) minmax(260px, 0.28fr);
      gap: 24px;
      align-items: end;
      margin-bottom: 22px;
    }

    .section-kicker {
      margin: 0 0 8px;
      color: var(--forest);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0;
    }

    h2 {
      margin: 0;
      color: #14231a;
      font-size: clamp(25px, 3vw, 38px);
      line-height: 1.2;
      letter-spacing: 0;
    }

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

    .surface {
      background: linear-gradient(180deg, rgba(246, 240, 220, 0.96), rgba(238, 232, 211, 0.92));
      border: 1px solid rgba(28, 57, 39, 0.12);
      border-radius: var(--radius);
      box-shadow: 0 18px 46px rgba(31, 74, 48, 0.1);
    }

    .toc {
      padding: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .toc a {
      padding: 9px 13px;
      border-radius: 8px;
      background: rgba(31, 90, 59, 0.1);
      color: var(--forest-deep);
      font-size: 14px;
      font-weight: 700;
      border: 1px solid rgba(31, 90, 59, 0.12);
    }

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

    .service-card {
      padding: 22px;
      min-height: 214px;
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 24px 48px rgba(31, 74, 48, 0.14);
      border-color: rgba(31, 90, 59, 0.3);
    }

    .service-card .num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: var(--forest-deep);
      color: #f5e8b7;
      font-weight: 800;
      font-size: 14px;
    }

    h3 {
      margin: 15px 0 8px;
      color: #14231a;
      font-size: 19px;
      line-height: 1.35;
    }

    .service-card p,
    .solution-panel p,
    .assurance-item p,
    .contact-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .solution-wrap {
      display: grid;
      grid-template-columns: minmax(0, 0.86fr) minmax(280px, 0.34fr);
      gap: 16px;
      align-items: stretch;
    }

    .solution-panel {
      padding: 24px;
    }

    .step-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .step {
      display: grid;
      grid-template-columns: 34px minmax(0, 1fr);
      gap: 12px;
      align-items: start;
      padding: 13px;
      border-radius: 8px;
      background: rgba(255, 250, 240, 0.62);
      border: 1px solid var(--line);
    }

    .step b {
      display: grid;
      place-items: center;
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: rgba(155, 191, 119, 0.26);
      color: var(--forest-deep);
    }

    .step strong {
      display: block;
      color: #17281d;
      line-height: 1.35;
    }

    .step span {
      display: block;
      margin-top: 3px;
      color: var(--muted);
      font-size: 14px;
    }

    .diagnose-box {
      padding: 24px;
      background: linear-gradient(160deg, #123725, #29583b);
      color: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .diagnose-box h3 {
      margin-top: 0;
      color: var(--white);
    }

    .diagnose-box ul {
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .diagnose-box li {
      padding-left: 18px;
      position: relative;
      color: rgba(255, 250, 240, 0.84);
      font-size: 14px;
    }

    .diagnose-box li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0.72em;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--gold);
    }

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

    .assurance-item {
      padding: 20px;
    }

    .assurance-item strong {
      display: block;
      color: var(--forest-deep);
      font-size: 18px;
      margin-bottom: 8px;
    }

    .contact-wrap {
      display: grid;
      grid-template-columns: minmax(0, 0.65fr) minmax(280px, 0.35fr);
      gap: 16px;
      align-items: stretch;
    }

    .contact-card {
      padding: 24px;
    }

    .info-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .info-row {
      display: grid;
      grid-template-columns: 90px minmax(0, 1fr);
      gap: 12px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--line);
    }

    .info-row:last-child {
      padding-bottom: 0;
      border-bottom: 0;
    }

    .info-row b {
      color: var(--forest-deep);
      font-size: 14px;
    }

    .info-row span,
    .info-row a {
      color: var(--muted);
      font-size: 15px;
    }

    .map-link {
      display: inline-flex;
      margin-top: 16px;
      color: var(--forest-deep);
      font-weight: 800;
      border-bottom: 2px solid rgba(31, 90, 59, 0.24);
    }

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

    .faq-item {
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: transparent;
      color: #14231a;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      cursor: pointer;
      font: inherit;
      font-weight: 800;
      text-align: left;
    }

    .faq-question::after {
      content: "+";
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 8px;
      background: rgba(31, 90, 59, 0.1);
      color: var(--forest-deep);
      font-size: 18px;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease;
    }

    .faq-answer p {
      margin: 0;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 15px;
    }

    .final-cta {
      padding: 30px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 20px;
      align-items: center;
      background:
        linear-gradient(135deg, rgba(18, 55, 37, 0.94), rgba(34, 82, 55, 0.9)),
        linear-gradient(90deg, transparent, rgba(214, 181, 109, 0.18));
      color: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .final-cta h2 {
      color: var(--white);
    }

    .final-cta p {
      margin: 10px 0 0;
      color: rgba(255, 250, 240, 0.78);
    }

    .site-footer {
      margin-top: 14px;
      background: #07120d;
      color: rgba(255, 250, 240, 0.72);
      border-top: 1px solid rgba(255, 250, 240, 0.1);
    }

    .footer-inner {
      padding: 24px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .footer-links a {
      color: rgba(255, 250, 240, 0.82);
    }

    .reveal {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

    @keyframes breathe {
      0%, 100% {
        transform: scale(1);
        opacity: 0.65;
      }
      50% {
        transform: scale(1.08);
        opacity: 0.9;
      }
    }

    @media (max-width: 920px) {
      .menu-toggle {
        display: inline-block;
      }

      .nav-links {
        position: fixed;
        left: 16px;
        right: 16px;
        top: 78px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 14px;
        border-radius: 8px;
        background: rgba(8, 20, 15, 0.98);
        border: 1px solid rgba(255, 250, 240, 0.12);
        box-shadow: var(--shadow);
      }

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

      .nav-links a,
      .nav-action {
        width: 100%;
        justify-content: center;
      }

      .hero-grid,
      .section-header,
      .solution-wrap,
      .contact-wrap,
      .final-cta {
        grid-template-columns: 1fr;
      }

      .service-grid,
      .assurance-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .final-cta .btn {
        width: 100%;
      }
    }

    @media (max-width: 620px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .brand-text span {
        display: none;
      }

      .hero {
        padding: 42px 0 30px;
      }

      .section {
        padding: 30px 0;
      }

      .service-grid,
      .assurance-grid,
      .quick-check {
        grid-template-columns: 1fr;
      }

      .hero-card,
      .solution-panel,
      .diagnose-box,
      .contact-card,
      .final-cta {
        padding: 18px;
      }

      .info-row {
        grid-template-columns: 1fr;
        gap: 4px;
      }

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

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

      *,
      *::before,
      *::after {
        animation: none !important;
        transition: none !important;
      }

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