:root {
      color-scheme: light;
      --ink: #17332d;
      --muted: #5e716b;
      --green: #147d58;
      --green-dark: #0e6044;
      --lime: #d9f36a;
      --mint: #e9f6ef;
      --line: #dce8e1;
      --paper: #f7faf8;
      --white: #fff;
      --coral: #f07658;
      --shadow: 0 14px 36px rgba(22, 73, 51, .08);
      --container: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 86px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(247, 250, 248, .96); border-bottom: 1px solid rgba(220, 232, 225, .9); backdrop-filter: blur(12px); }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .ai-page-logo { display: block; width: 42px; max-width: 100%; height: auto; }
    .brand-name { font-weight: 800; letter-spacing: 0; font-size: 17px; white-space: nowrap; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 0; }
    .nav-links a { padding: 8px 9px; color: #405c52; font-size: 13px; border-radius: 5px; transition: color .2s ease, background .2s ease; }
    .nav-links a:hover { color: var(--green-dark); background: var(--mint); }
    .nav-cta { background: var(--green); color: #fff !important; padding-inline: 15px !important; margin-left: 7px; }
    .nav-cta:hover { background: var(--green-dark) !important; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--white); color: var(--ink); border-radius: 5px; padding: 8px 11px; cursor: pointer; }
    .hero { overflow: hidden; position: relative; padding: 74px 0 56px; background: linear-gradient(135deg, #eaf7ed 0%, #f6f9e9 55%, #fff8e7 100%); border-bottom: 1px solid #e0eadf; }
    .hero::before { content: ""; position: absolute; width: 420px; height: 420px; right: -150px; top: -205px; border: 1px solid rgba(20, 125, 88, .16); border-radius: 50%; box-shadow: 0 0 0 35px rgba(20, 125, 88, .035), 0 0 0 75px rgba(20, 125, 88, .025); pointer-events: none; }
    .hero::after { content: ""; position: absolute; width: 11px; height: 11px; background: var(--coral); border-radius: 50%; right: 17%; bottom: 24%; box-shadow: 0 0 0 10px rgba(240, 118, 88, .11); animation: breathe 3s ease-in-out infinite; }
    .hero-content { position: relative; z-index: 1; max-width: 820px; }
    .eyebrow { display: inline-flex; gap: 8px; align-items: center; padding: 5px 10px; border: 1px solid #cfe2d2; border-radius: 4px; color: var(--green-dark); background: rgba(255,255,255,.58); font-size: 12px; font-weight: 700; }
    .eyebrow::before { content: ""; width: 7px; height: 7px; background: var(--green); border-radius: 50%; }
    h1 { max-width: 760px; margin: 22px 0 15px; font-size: clamp(38px, 6vw, 68px); line-height: 1.12; letter-spacing: 0; }
    .hero p { max-width: 690px; color: #49645a; font-size: 17px; margin: 0; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 46px; padding: 10px 18px; border: 1px solid transparent; border-radius: 5px; font-weight: 750; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(16, 91, 61, .16); }
    .button-primary { color: #fff; background: var(--green); }
    .button-primary:hover { background: var(--green-dark); }
    .button-secondary { color: var(--ink); background: rgba(255,255,255,.76); border-color: #cfe0d4; }
    .hero-note { margin-top: 20px !important; font-size: 13px !important; color: #60756b !important; }
    .hero-note span { color: #c7553b; font-weight: 700; }
    .hero-metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; max-width: 850px; margin-top: 43px; border-top: 1px solid rgba(31, 106, 74, .19); }
    .metric { padding: 18px 18px 0 0; }
    .metric strong { display: block; font-size: 20px; line-height: 1.3; }
    .metric span { font-size: 12px; color: var(--muted); }
    section { padding: 66px 0; }
    .section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
    .section-head > div { max-width: 720px; }
    .section-kicker { margin: 0 0 7px; color: var(--green); font-size: 12px; font-weight: 800; text-transform: uppercase; }
    h2 { margin: 0; font-size: clamp(26px, 4vw, 38px); line-height: 1.25; letter-spacing: 0; }
    .section-intro { max-width: 680px; margin: 12px 0 0; color: var(--muted); }
    h3 { margin: 0; font-size: 18px; line-height: 1.4; letter-spacing: 0; }
    .about-band { background: #f0f7f2; }
    .about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 45px; align-items: start; }
    .about-copy p { color: var(--muted); margin: 14px 0; }
    .value-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 20px; margin-top: 22px; }
    .value-list div { border-left: 3px solid var(--lime); padding: 3px 0 3px 12px; font-weight: 700; }
    .model-panel { padding: 22px; background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--green); }
    .model-panel p { margin: 8px 0 15px; color: var(--muted); font-size: 14px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag-cloud span { padding: 5px 9px; border: 1px solid #dce9df; background: #f6faf7; color: #365a4a; border-radius: 3px; font-size: 12px; }
    .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .feature { min-height: 170px; padding: 20px; border: 1px solid var(--line); background: var(--white); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
    .feature:hover, .service:hover, .quote:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #b9d4c3; }
    .feature-mark { display: grid; place-items: center; width: 36px; height: 36px; margin-bottom: 15px; background: var(--mint); color: var(--green-dark); border-radius: 4px; font-weight: 800; }
    .feature p, .service p { color: var(--muted); font-size: 14px; margin: 8px 0 0; }
    .workflow { background: #edf6f0; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid #cddfd2; }
    .step { padding: 22px 22px 0 0; position: relative; }
    .step-number { color: var(--green); font-size: 12px; font-weight: 800; margin-bottom: 10px; }
    .step p { color: var(--muted); margin: 8px 0 0; font-size: 14px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .service { padding: 19px; background: #fff; border: 1px solid var(--line); transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
    .service p { min-height: 48px; }
    .service a { display: inline-block; margin-top: 13px; color: var(--green-dark); font-weight: 750; font-size: 13px; }
    .showcase { background: #f1f7f2; }
    .gallery { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 14px; align-items: start; }
    .gallery figure { margin: 0; background: #fff; border: 1px solid var(--line); overflow: hidden; }
    .gallery img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: contain; background: #eaf1eb; }
    .gallery figcaption { padding: 12px 14px; color: #49645a; font-size: 13px; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    .compare { width: 100%; min-width: 720px; border-collapse: collapse; text-align: left; }
    .compare th, .compare td { padding: 14px 16px; border-bottom: 1px solid #e6eee8; vertical-align: top; }
    .compare th { color: #254a39; background: #eaf4ed; font-size: 13px; }
    .compare td { color: #4c6259; font-size: 14px; }
    .compare tbody tr:last-child td { border-bottom: 0; }
    .rating { display: flex; align-items: center; gap: 18px; margin-bottom: 19px; padding: 16px 19px; background: #173f32; color: #fff; }
    .rating strong { font-size: 27px; color: var(--lime); }
    .rating span { color: #e4eee7; }
    .rating .stars { margin-left: auto; color: var(--lime); letter-spacing: 0; }
    .reviews { background: #eff6f1; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .quote { padding: 19px; background: #fff; border: 1px solid var(--line); transition: transform .2s ease, box-shadow .2s ease; }
    .quote p { margin: 0 0 17px; color: #435c51; font-size: 14px; }
    .quote footer { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 12px; }
    .avatar { display: grid; place-items: center; width: 32px; height: 32px; background: #dff0e5; color: var(--green-dark); border-radius: 50%; font-weight: 800; }
    .content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
    .timeline { border-left: 2px solid #cfe1d4; padding-left: 19px; }
    .timeline-item { position: relative; padding: 0 0 18px; }
    .timeline-item::before { content: ""; position: absolute; left: -25px; top: 8px; width: 9px; height: 9px; border: 2px solid var(--green); border-radius: 50%; background: var(--paper); }
    .timeline-item strong { display: block; }
    .timeline-item p { margin: 5px 0 0; color: var(--muted); font-size: 14px; }
    .article-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
    .article-list li { padding: 12px 0; border-bottom: 1px solid var(--line); }
    .article-list a { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-weight: 650; }
    .article-list a span:last-child { color: var(--green); white-space: nowrap; }
    .faq { background: #edf6f0; }
    .faq-list { border-top: 1px solid #cbded1; }
    details { border-bottom: 1px solid #cbded1; }
    summary { list-style: none; cursor: pointer; padding: 16px 34px 16px 0; position: relative; font-weight: 750; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; top: 13px; color: var(--green); font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; padding: 0 28px 17px 0; color: var(--muted); font-size: 14px; }
    .contact-section { background: #f7faf8; }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 32px; align-items: start; }
    .contact-info { padding-right: 12px; }
    .contact-info p { color: var(--muted); }
    .contact-line { padding: 11px 0; border-bottom: 1px solid var(--line); }
    .contact-line strong { display: inline-block; min-width: 94px; color: var(--ink); }
    .contact-line a { color: var(--green-dark); font-weight: 700; }
    .contact-qr { width: 132px; margin-top: 18px; padding: 7px; background: #fff; border: 1px solid var(--line); }
    .contact-qr img { display: block; width: 100%; height: auto; }
    .form-panel { padding: 22px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .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%; border: 1px solid #ceddd2; border-radius: 4px; padding: 10px 11px; color: var(--ink); background: #fbfdfb; outline: none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(20,125,88,.1); }
    .field textarea { min-height: 100px; resize: vertical; }
    .form-submit { margin-top: 15px; cursor: pointer; }
    .site-footer { color: #e7f0e9; background: #173f32; padding: 30px 0 20px; }
    .footer-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; padding-bottom: 22px; }
    .footer-brand { max-width: 360px; }
    .footer-brand strong { display: block; color: #fff; font-size: 18px; margin-bottom: 5px; }
    .footer-brand p { margin: 0; color: #c2d5c9; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 15px; justify-content: flex-end; max-width: 620px; }
    .footer-links a { color: #e2efe6; font-size: 12px; }
    .footer-links a:hover { color: var(--lime); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 14px; border-top: 1px solid rgba(255,255,255,.18); padding-top: 14px; color: #b8cfc1; font-size: 12px; }
    .floating { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
    .floating a { display: grid; place-items: center; width: 48px; min-height: 48px; padding: 5px; background: #fff; color: var(--green-dark); border: 1px solid var(--line); box-shadow: 0 6px 18px rgba(22,73,51,.12); border-radius: 5px; text-align: center; font-size: 11px; font-weight: 800; }
    .floating a:hover { background: var(--green); color: #fff; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes breathe { 50% { transform: scale(1.18); box-shadow: 0 0 0 14px rgba(240,118,88,.07); } }
    @media (max-width: 900px) {
      .menu-toggle { display: inline-flex; align-items: center; gap: 7px; }
      .nav-row { position: relative; }
      .nav-links { display: none; position: absolute; top: calc(100% - 1px); left: 0; right: 0; padding: 10px; background: var(--paper); border: 1px solid var(--line); box-shadow: var(--shadow); align-items: stretch; justify-content: flex-start; }
      .nav-links.open { display: flex; }
      .nav-links a { flex: 1 1 24%; }
      .nav-cta { margin-left: 0; text-align: center; }
      .about-grid { grid-template-columns: 1fr; gap: 24px; }
      .service-grid, .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .gallery { grid-template-columns: repeat(2, 1fr); }
      .gallery figure:first-child { grid-column: 1 / -1; }
      .steps { grid-template-columns: repeat(2, 1fr); row-gap: 12px; }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 600px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .nav-row { min-height: 66px; }
      .brand-name { font-size: 15px; }
      .ai-page-logo { width: 36px; }
      .nav-links a { flex-basis: 31%; padding: 8px 6px; font-size: 12px; }
      .hero { padding: 55px 0 38px; }
      .hero p { font-size: 15px; }
      .hero-metrics { grid-template-columns: repeat(2, 1fr); row-gap: 10px; }
      .metric { padding-top: 14px; }
      section { padding: 48px 0; }
      .section-head { display: block; margin-bottom: 21px; }
      .feature-grid, .service-grid, .review-grid, .content-grid, .contact-grid { grid-template-columns: 1fr; }
      .feature { min-height: 0; }
      .steps { grid-template-columns: 1fr 1fr; }
      .step { padding-right: 12px; }
      .gallery { grid-template-columns: 1fr; }
      .gallery figure:first-child { grid-column: auto; }
      .rating { flex-wrap: wrap; gap: 7px 14px; }
      .rating .stars { margin-left: 0; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-top, .footer-bottom { display: block; }
      .footer-links { justify-content: flex-start; margin-top: 17px; }
      .footer-bottom span { display: block; margin-top: 5px; }
      .floating { right: 9px; bottom: 12px; }
      .floating a { width: 43px; min-height: 43px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }