:root {
      color-scheme: light;
      --ink: #172522;
      --muted: #53645e;
      --paper: #f8f9f7;
      --white: #fff;
      --line: #dfe7e2;
      --green: #087d61;
      --green-dark: #075d4a;
      --lime: #c9f15a;
      --coral: #f2785b;
      --blue: #4b83d2;
      --container: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(248, 249, 247, .96);
      border-bottom: 1px solid rgba(23, 37, 34, .09);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; min-width: 0; text-decoration: none; font-weight: 800; }
    .brand img { display: block; width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-size: 17px; white-space: nowrap; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 11px; color: #34443e; font-size: 13px; text-decoration: none; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--green); }
    .nav-links .nav-cta { margin-left: 8px; padding: 10px 16px; border-radius: 4px; background: var(--green); color: #fff; font-weight: 700; }
    .nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; background: var(--white); color: var(--ink); cursor: pointer; }
    .nav-toggle span, .nav-toggle::before, .nav-toggle::after { content: ""; display: block; width: 18px; height: 2px; margin: 4px auto; background: currentColor; }

    .hero {
      overflow: hidden;
      position: relative;
      padding: 76px 0 58px;
      background:
        linear-gradient(116deg, rgba(201,241,90,.2), transparent 35%),
        linear-gradient(300deg, rgba(75,131,210,.11), transparent 38%),
        #f3f7f1;
      border-bottom: 1px solid var(--line);
    }
    .hero::after {
      content: "";
      position: absolute;
      width: 420px;
      height: 420px;
      right: -145px;
      top: -170px;
      border: 1px solid rgba(8,125,97,.15);
      border-radius: 50%;
      box-shadow: 0 0 0 34px rgba(8,125,97,.035), 0 0 0 68px rgba(8,125,97,.025);
      pointer-events: none;
    }
    .hero-inner { position: relative; z-index: 1; }
    .hero-kicker { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--green-dark); font-size: 13px; font-weight: 800; }
    .hero-kicker::before { content: ""; width: 22px; height: 3px; background: var(--coral); }
    h1 { max-width: 780px; margin: 0; font-size: clamp(40px, 7vw, 72px); line-height: 1.1; }
    .hero-copy { max-width: 680px; margin: 22px 0 25px; color: #455750; font-size: 17px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
    .button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 11px 20px; border: 1px solid transparent; border-radius: 4px; text-decoration: none; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(12, 72, 55, .15); }
    .button-primary { background: var(--green); color: #fff; }
    .button-primary:hover { background: var(--green-dark); }
    .button-outline { border-color: #aabcb2; background: rgba(255,255,255,.62); color: var(--ink); }
    .hero-points { display: flex; gap: 20px 30px; flex-wrap: wrap; margin: 30px 0 0; padding: 0; list-style: none; color: #40534a; font-size: 13px; }
    .hero-points li::before { content: "✓"; margin-right: 8px; color: var(--green); font-weight: 900; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 42px; border-top: 1px solid #cbd8d0; }
    .metric { padding: 19px 18px 0 0; }
    .metric strong { display: block; font-size: 21px; line-height: 1.3; }
    .metric span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }

    main { overflow: hidden; }
    .section { padding: 76px 0; border-bottom: 1px solid var(--line); }
    .section-tint { background: #eff4ef; }
    .section-dark { background: #172b25; color: #f5f8f5; }
    .section-head { max-width: 720px; margin-bottom: 32px; }
    .eyebrow { margin: 0 0 8px; color: var(--green); font-size: 12px; font-weight: 850; text-transform: uppercase; }
    .section-dark .eyebrow { color: var(--lime); }
    h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.2; }
    .section-intro { margin: 12px 0 0; color: var(--muted); }
    .section-dark .section-intro { color: #c8d6d0; }
    .about-layout { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 46px; }
    .about-layout p { margin: 0 0 14px; color: var(--muted); }
    .about-layout strong { color: var(--ink); }
    .capability-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0 22px; padding: 0; margin: 0; list-style: none; }
    .capability-list li { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
    .capability-list li::before { content: "↗"; margin-right: 9px; color: var(--green); font-weight: 800; }

    .service-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1px; background: #d7e1da; border: 1px solid #d7e1da; }
    .service { min-height: 170px; padding: 23px; background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .service:hover { position: relative; z-index: 1; transform: translateY(-3px); box-shadow: 0 12px 28px rgba(24, 60, 46, .11); }
    .service-index { color: var(--coral); font-size: 12px; font-weight: 850; }
    .service h3 { margin: 10px 0 7px; font-size: 18px; }
    .service p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
    .service-tags span { padding: 6px 10px; border: 1px solid #cfddd4; border-radius: 3px; color: #365349; font-size: 12px; }

    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: steps; }
    .workflow article { position: relative; padding: 20px 18px 18px 0; border-top: 3px solid var(--green); counter-increment: steps; }
    .workflow article::before { content: "0" counter(steps); color: var(--green); font-size: 13px; font-weight: 850; }
    .workflow h3 { margin: 9px 0 6px; font-size: 17px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 13px; }

    .industry-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
    .industry { padding-top: 18px; border-top: 2px solid var(--coral); }
    .industry:nth-child(2) { border-color: var(--blue); }
    .industry:nth-child(3) { border-color: var(--green); }
    .industry h3 { margin: 0 0 8px; font-size: 18px; }
    .industry p { margin: 0; color: var(--muted); font-size: 14px; }

    .network { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: start; }
    .network-copy p { margin: 0 0 14px; color: var(--muted); }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-cloud span { padding: 7px 11px; border: 1px solid #cbd8d0; border-radius: 3px; background: #fff; color: #31483e; font-size: 12px; }
    .network-note { margin-top: 15px; color: var(--muted); font-size: 12px; }

    .comparison { width: 100%; border-collapse: collapse; background: #fff; }
    .comparison th, .comparison td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    .comparison th { background: #e9f1eb; font-size: 13px; }
    .comparison td { font-size: 13px; }
    .comparison td:first-child { width: 24%; font-weight: 750; }
    .comparison td:last-child { color: var(--green-dark); font-weight: 700; }
    .rating-band { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 22px; padding: 18px 22px; background: #172b25; color: #fff; }
    .rating-band strong { font-size: 24px; }
    .rating-band span { color: var(--lime); font-weight: 800; }
    .table-wrap { overflow-x: auto; }

    .case-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
    .case { overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .case-media { aspect-ratio: 16 / 9; overflow: hidden; background: #e8eee9; }
    .case-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 17px; }
    .case-body h3 { margin: 0 0 6px; font-size: 17px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 13px; }

    .review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
    .review { padding: 19px; border-left: 3px solid var(--lime); background: #20372f; }
    .review p { margin: 0 0 15px; color: #e0e9e4; font-size: 14px; }
    .review strong { font-size: 12px; color: var(--lime); }

    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .match-copy p { color: var(--muted); }
    .match-copy .button { margin-top: 8px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #cbd8d0; border-radius: 3px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 118px; resize: vertical; }
    .form-submit { grid-column: 1 / -1; justify-self: start; border: 0; cursor: pointer; }

    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; list-style: none; font-weight: 750; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 12px; color: var(--green); font-size: 24px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: 0 30px 17px 0; color: var(--muted); font-size: 14px; }

    .article-links { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 12px; }
    .article-links a { display: flex; min-height: 90px; align-items: flex-end; padding: 14px; border: 1px solid var(--line); background: #fff; text-decoration: none; font-size: 13px; font-weight: 700; transition: border-color .2s ease, transform .2s ease; }
    .article-links a:hover { transform: translateY(-2px); border-color: var(--green); }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 0 0; }
    .join-band h3 { margin: 0 0 5px; font-size: 20px; }
    .join-band p { margin: 0; color: var(--muted); font-size: 14px; }
    .join-band .button { flex-shrink: 0; }
    .site-footer { padding: 34px 0; background: #e8eee9; color: #20352c; }
    .footer-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; }
    .footer-contact { display: grid; gap: 5px; color: #344d41; font-size: 13px; }
    .footer-contact a { color: #075d4a; }
    .friend-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 16px; max-width: 560px; }
    .friend-links a { color: #315647; font-size: 12px; text-decoration: none; }
    .copyright { margin: 21px 0 0; padding-top: 14px; border-top: 1px solid #cbd8d0; color: #53645e; font-size: 12px; }
    .qr { width: 112px; margin-top: 10px; padding: 5px; border: 1px solid #cad7cf; background: #fff; }
    .qr img { display: block; width: 100%; height: auto; }
    .float-tools { position: fixed; right: 16px; bottom: 20px; z-index: 15; display: flex; flex-direction: column; gap: 8px; }
    .float-tools a { display: grid; width: 46px; height: 46px; place-items: center; border: 1px solid #cbd8d0; border-radius: 4px; background: #fff; color: var(--green-dark); text-decoration: none; font-size: 12px; font-weight: 800; box-shadow: 0 5px 16px rgba(24, 60, 46, .1); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: none; }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 920px) {
      .nav-toggle { display: block; flex: 0 0 auto; }
      .nav-row { position: relative; }
      .nav-links { display: none; position: absolute; top: calc(100% + 1px); left: 0; right: 0; padding: 10px; border: 1px solid var(--line); background: var(--paper); box-shadow: 0 12px 20px rgba(23,37,34,.08); }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
      .nav-links a { padding: 11px; }
      .nav-links .nav-cta { margin: 5px 0 0; text-align: center; }
      .service-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
      .article-links { grid-template-columns: repeat(3, minmax(0,1fr)); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 55px 0 42px; }
      .hero-copy { font-size: 15px; }
      .metrics { grid-template-columns: repeat(2, minmax(0,1fr)); row-gap: 20px; }
      .metric:nth-child(2) { padding-right: 0; }
      .section { padding: 56px 0; }
      .about-layout, .network, .match-layout { grid-template-columns: 1fr; gap: 26px; }
      .capability-list { grid-template-columns: 1fr 1fr; }
      .service-grid, .industry-grid, .case-grid, .review-grid { grid-template-columns: 1fr; }
      .service { min-height: 0; }
      .workflow { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
      .comparison { min-width: 700px; }
      .rating-band { align-items: flex-start; flex-direction: column; gap: 6px; }
      .article-links { grid-template-columns: repeat(2, minmax(0,1fr)); }
      .join-band, .footer-top { align-items: flex-start; flex-direction: column; }
      .friend-links { justify-content: flex-start; }
      .contact-form { grid-template-columns: 1fr; }
      .field-full, .form-submit { grid-column: auto; }
      .float-tools { right: 10px; bottom: 12px; }
    }