:root {
      color-scheme: light;
      --ink: #172721;
      --muted: #5c6c64;
      --paper: #f4f8f5;
      --white: #fff;
      --line: #dce7df;
      --green: #087f5b;
      --green-dark: #075b43;
      --lime: #d7f36c;
      --coral: #fb795d;
      --blue: #267a96;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(244,248,245,.95); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .nav-wrap { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .ai-page-logo { width: 42px; max-width: 100%; height: auto; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; text-decoration: none; font-size: 13px; color: #34463d; border-radius: 5px; }
    .nav-links a:hover { background: #e4efe7; color: var(--green-dark); }
    .nav-links .nav-cta { margin-left: 8px; background: var(--green); color: #fff; padding-inline: 15px; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--white); color: var(--ink); border-radius: 5px; padding: 8px 11px; }
    .hero { overflow: hidden; position: relative; padding: 78px 0 48px; background: #e9f3e9; border-bottom: 1px solid #d5e4d7; }
    .hero:before { content: ""; position: absolute; width: 340px; height: 340px; border: 1px solid rgba(8,127,91,.14); border-radius: 50%; right: -100px; top: -135px; box-shadow: 0 0 0 35px rgba(8,127,91,.035), 0 0 0 76px rgba(8,127,91,.025); }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr); gap: 52px; align-items: center; }
    .eyebrow { color: var(--green-dark); font-size: 13px; font-weight: 800; }
    h1 { max-width: 700px; margin: 15px 0 18px; font-size: clamp(38px, 5vw, 64px); line-height: 1.13; }
    .hero-copy { max-width: 620px; color: #43564b; font-size: 17px; }
    .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 27px; }
    .button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid var(--green); border-radius: 5px; text-decoration: none; font-weight: 750; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 7px 18px rgba(7,91,67,.15); }
    .button-primary { background: var(--green); color: #fff; }
    .button-secondary { background: transparent; color: var(--green-dark); }
    .hero-art { min-height: 250px; display: grid; align-content: center; padding: 25px; background: #fff; border: 1px solid #d4e4d8; border-radius: 8px; box-shadow: 10px 10px 0 #d3e8b8; }
    .hero-art strong { font-size: 18px; }
    .flow-line { display: flex; align-items: center; gap: 7px; margin-top: 19px; color: #40564a; font-size: 12px; }
    .flow-line span { padding: 8px 9px; border: 1px solid #dce7df; border-radius: 4px; background: #f7faf7; }
    .flow-line b { color: var(--coral); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 49px; border-top: 1px solid #cfdfd2; }
    .metric { padding: 20px 16px 0 0; }
    .metric strong { display: block; color: var(--green-dark); font-size: 21px; }
    .metric span { color: var(--muted); font-size: 13px; }
    main { overflow: clip; }
    .section { padding: 76px 0; }
    .section + .section { border-top: 1px solid rgba(20,61,43,.09); }
    .section-heading { max-width: 710px; margin-bottom: 32px; }
    .section-heading .eyebrow { color: #a64f37; }
    h2 { margin: 8px 0 12px; font-size: clamp(28px, 4vw, 42px); line-height: 1.25; }
    .section-heading p { margin: 0; color: var(--muted); }
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
    .about-copy p { color: var(--muted); }
    .check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 20px; padding: 0; margin: 23px 0 0; list-style: none; }
    .check-list li:before { content: "✓"; color: var(--green); font-weight: 900; margin-right: 8px; }
    .highlight-note { padding: 22px 24px; background: #e5f0e6; border-left: 4px solid var(--green); }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .service-item { padding: 21px; background: var(--white); border: 1px solid var(--line); border-top: 3px solid var(--green); border-radius: 5px; transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover, .quote:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(27,69,47,.09); }
    .service-item h3 { margin: 0 0 8px; font-size: 18px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-item:nth-child(3n+2) { border-top-color: var(--coral); }
    .service-item:nth-child(3n) { border-top-color: #77a937; }
    .band { background: #e8f1e9; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .step { position: relative; padding: 21px 22px 12px 0; border-top: 2px solid #9fc7a8; counter-increment: step; }
    .step:before { content: "0" counter(step); display: block; margin-bottom: 14px; color: var(--green); font-weight: 850; font-size: 20px; }
    .step h3 { margin: 0 0 7px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .industry-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 38px; }
    .industry-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
    .industry-list div { padding: 13px 0; border-bottom: 1px solid var(--line); }
    .industry-list strong { display: block; }
    .industry-list span { color: var(--muted); font-size: 13px; }
    .quote-panel { padding: 25px; background: var(--green-dark); color: #fff; border-radius: 6px; }
    .quote-panel p { color: #e0f0e5; }
    .quote-panel .button { color: var(--green-dark); background: var(--lime); border-color: var(--lime); }
    .model-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 19px; }
    .model-tags span { padding: 7px 11px; background: #fff; border: 1px solid var(--line); border-radius: 4px; color: #34463d; font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; border-radius: 5px; }
    table { width: 100%; min-width: 760px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #e5ece6; vertical-align: top; }
    th { background: #e8f1e9; color: #203b2c; font-size: 14px; }
    td { font-size: 14px; }
    tr:last-child td { border-bottom: 0; }
    .rating { display: flex; align-items: center; gap: 18px; margin-bottom: 22px; }
    .rating strong { color: var(--green-dark); font-size: 34px; }
    .stars { color: #df8a26; letter-spacing: 0; font-size: 20px; }
    .quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .quote { padding: 19px; background: #fff; border: 1px solid var(--line); border-radius: 5px; transition: transform .2s ease, box-shadow .2s ease; }
    .quote p { margin: 0 0 15px; color: #43564b; font-size: 14px; }
    .quote strong { font-size: 13px; }
    .quote small { display: block; color: var(--muted); }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .case { padding: 22px; background: #fff; border-bottom: 3px solid var(--coral); }
    .case:nth-child(2) { border-bottom-color: var(--blue); }
    .case:nth-child(3) { border-bottom-color: var(--green); }
    .case h3 { margin: 0 0 8px; }
    .case p { margin: 0; color: var(--muted); font-size: 14px; }
    .match-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 45px; align-items: start; }
    .form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-weight: 700; font-size: 13px; }
    .field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #cbd9cf; border-radius: 4px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 116px; resize: vertical; }
    .form .button { cursor: pointer; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
    details { padding: 16px 0; border-bottom: 1px solid var(--line); }
    summary { cursor: pointer; font-weight: 750; }
    details p { color: var(--muted); font-size: 14px; margin: 10px 0 0; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-list a { padding: 15px; background: #fff; border: 1px solid var(--line); text-decoration: none; font-size: 14px; font-weight: 700; }
    .article-list a:hover { color: var(--green-dark); border-color: var(--green); }
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; }
    .contact-info { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    .contact-info div { padding: 14px; background: #e8f1e9; }
    .contact-info strong { display: block; font-size: 13px; }
    .contact-info a { color: var(--green-dark); overflow-wrap: anywhere; }
    .qr { width: 132px; margin-top: 16px; }
    .qr img { display: block; max-width: 100%; height: auto; border: 4px solid #fff; }
    .site-footer { padding: 30px 0; background: #e3eee5; border-top: 1px solid #d4e2d6; color: #263c30; }
    .footer-row { display: flex; justify-content: space-between; gap: 22px; align-items: center; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
    .footer-links a { color: #285b43; font-size: 13px; }
    .copyright { font-size: 12px; color: #52665a; }
    .float-contact { position: fixed; right: 18px; bottom: 22px; z-index: 15; display: grid; gap: 8px; }
    .float-contact a { padding: 10px 13px; background: var(--green-dark); color: #fff; text-decoration: none; border-radius: 4px; box-shadow: 0 4px 12px rgba(0,0,0,.12); font-size: 13px; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (prefers-reduced-motion: reduce) { *, *:before, *:after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }
    @media (max-width: 900px) {
      .menu-toggle { display: inline-flex; }
      .nav-wrap { position: relative; }
      .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; padding: 12px; background: var(--paper); border: 1px solid var(--line); align-items: stretch; flex-direction: column; }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 10px; }
      .nav-links .nav-cta { margin: 5px 0 0; text-align: center; }
      .hero-inner, .about-grid, .industry-layout, .match-grid, .contact-grid { grid-template-columns: 1fr; }
      .hero-inner { gap: 30px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .quotes { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 600px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero { padding: 54px 0 36px; }
      .hero-art { min-height: 190px; padding: 18px; }
      .flow-line { flex-wrap: wrap; }
      .metrics { grid-template-columns: 1fr 1fr; row-gap: 17px; }
      .section { padding: 55px 0; }
      .service-grid, .quotes, .case-grid, .faq-list, .industry-list { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr 1fr; gap: 8px 18px; }
      .check-list { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .form { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .contact-info { grid-template-columns: 1fr; }
      .footer-row { align-items: flex-start; flex-direction: column; }
      .float-contact { right: 10px; bottom: 12px; }
      .float-contact a { padding: 9px 11px; }
    }