:root {
      color-scheme: light;
      --ink: #18352d;
      --muted: #587068;
      --green: #157452;
      --green-dark: #0e5a40;
      --lime: #d8f29c;
      --mint: #e8f7ef;
      --paper: #f5fbf7;
      --line: #d9e9df;
      --white: #fff;
      --coral: #ef8064;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "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(245,251,247,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; font-weight: 760; white-space: nowrap; }
    .ai-page-logo { display: block; width: 40px; 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: 8px 9px; color: #36564a; text-decoration: none; font-size: 13px; }
    .nav-links a:hover, .nav-links a:focus-visible { color: var(--green); text-decoration: underline; text-underline-offset: 5px; }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 5px; padding: 12px 19px; background: var(--green); color: white; text-decoration: none; font-weight: 700; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .nav-cta { flex: 0 0 auto; padding: 10px 15px; font-size: 14px; }
    .button:hover, .nav-cta:hover { background: var(--green-dark); box-shadow: 0 8px 20px rgba(21,116,82,.18); transform: translateY(-2px); }
    .button.secondary { background: transparent; color: var(--green-dark); border: 1px solid #86b9a0; }
    .button.secondary:hover { background: var(--mint); box-shadow: none; }
    .menu-toggle { display: none; border: 1px solid var(--line); border-radius: 5px; background: var(--white); color: var(--ink); padding: 8px 11px; cursor: pointer; }
    .hero { overflow: hidden; position: relative; padding: 76px 0 55px; background: #eaf8ee; border-bottom: 1px solid var(--line); }
    .hero::after { content: ""; position: absolute; width: 400px; height: 400px; right: -160px; top: -190px; border: 1px solid #bedfc8; border-radius: 50%; box-shadow: 0 0 0 35px rgba(190,223,200,.25), 0 0 0 70px rgba(190,223,200,.14); pointer-events: none; }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1fr) minmax(250px, .7fr); gap: 52px; align-items: center; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--green-dark); font-size: 13px; font-weight: 750; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--coral); }
    h1 { max-width: 680px; margin: 17px 0 17px; font-size: clamp(38px, 5vw, 64px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy { max-width: 620px; margin: 0; color: #405d51; font-size: 17px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
    .hero-note { margin-top: 19px; color: var(--muted); font-size: 13px; }
    .hero-side { padding-left: 24px; border-left: 1px solid #bcd9c6; }
    .hero-side h2 { margin: 0 0 13px; font-size: 19px; }
    .hero-side p { margin: 0; color: #456357; font-size: 14px; }
    .model-strip { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
    .model-strip span { padding: 5px 9px; border: 1px solid #c7e2ce; background: rgba(255,255,255,.65); color: #315849; font-size: 12px; }
    .metrics { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 40px; border-top: 1px solid #c7e0ce; }
    .metric { padding: 19px 18px 0 0; }
    .metric strong { display: block; color: var(--green-dark); font-size: 17px; }
    .metric span { color: var(--muted); font-size: 13px; }
    main { background: var(--paper); }
    section.content-section { padding: 66px 0; border-bottom: 1px solid var(--line); }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 27px; }
    .section-heading h2 { margin: 0; font-size: 30px; line-height: 1.25; }
    .section-heading p { max-width: 560px; margin: 0; color: var(--muted); font-size: 14px; }
    .kicker { display: block; margin-bottom: 8px; color: var(--green); font-size: 12px; font-weight: 760; text-transform: uppercase; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
    .intro-grid h3 { margin: 0 0 13px; font-size: 21px; }
    .intro-grid p { margin: 0 0 14px; color: var(--muted); }
    .capability-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px 22px; margin: 0; padding: 0; list-style: none; }
    .capability-list li { padding: 11px 0; border-bottom: 1px solid var(--line); color: #345648; }
    .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: 14px; }
    .service-item { padding: 19px 18px; border-top: 2px solid #9acba9; background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(30,83,57,.08); }
    .service-item h3 { margin: 0 0 7px; font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-item .text-link { display: inline-block; margin-top: 10px; color: var(--green-dark); font-size: 13px; font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 3px; }
    .feature-band { padding: 25px; background: #e8f7ef; border-left: 4px solid var(--green); }
    .feature-band h3 { margin: 0 0 7px; font-size: 20px; }
    .feature-band p { margin: 0; color: #456357; }
    .steps { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 20px; counter-reset: step; }
    .step { padding-top: 14px; border-top: 1px solid #9dc8aa; counter-increment: step; }
    .step::before { content: "0" counter(step); display: block; margin-bottom: 12px; color: var(--green); font-size: 13px; font-weight: 800; }
    .step h3 { margin: 0 0 6px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-list { display: flex; flex-wrap: wrap; gap: 9px; }
    .industry-list span { padding: 8px 12px; border: 1px solid #c9e2d0; background: #fff; color: #365d4a; font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #e3eee7; vertical-align: top; }
    th { background: #eaf6ed; color: #264c3a; font-size: 13px; }
    td { color: #4d675c; font-size: 13px; }
    tr:last-child td { border-bottom: 0; }
    .score-panel { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; padding: 18px 22px; background: #174f3b; color: #fff; }
    .score-number { color: var(--lime); font-size: 36px; font-weight: 800; line-height: 1; }
    .score-copy strong { display: block; font-size: 16px; }
    .score-copy span { color: #d7eadf; font-size: 13px; }
    .stars { color: var(--lime); letter-spacing: 0; }
    .testimonial-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
    .quote { margin: 0; padding: 19px; background: #fff; border-bottom: 2px solid #b9ddc3; }
    .quote p { margin: 0 0 15px; color: #456055; font-size: 14px; }
    .quote footer { color: var(--green-dark); font-size: 12px; font-weight: 700; }
    .case-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 15px; }
    .case { overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .case-image { aspect-ratio: 16 / 9; overflow: hidden; background: #e6f3e9; }
    .case-image img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-copy { padding: 15px; }
    .case-copy h3 { margin: 0 0 5px; font-size: 15px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 16px 38px 16px 0; cursor: pointer; font-weight: 680; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 7px; top: 12px; color: var(--green); font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 850px; margin: -2px 34px 16px 0; color: var(--muted); font-size: 14px; }
    .article-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 24px; }
    .article-links a { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--green-dark); text-decoration: none; }
    .article-links a:hover { color: #aa543d; }
    .article-links span { color: var(--muted); font-size: 12px; }
    .form-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; align-items: start; }
    .contact-copy h2 { margin: 0 0 12px; font-size: 30px; }
    .contact-copy p { color: var(--muted); }
    .contact-details { display: grid; gap: 7px; margin-top: 20px; color: #365b4b; font-size: 14px; }
    .contact-form { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.wide { grid-column: 1 / -1; }
    .field label { color: #365449; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #c9ded0; border-radius: 4px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 120px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #80bc98; outline-offset: 1px; }
    .form-actions { grid-column: 1 / -1; display: flex; align-items: center; gap: 15px; flex-wrap: wrap; }
    .form-note { color: var(--muted); font-size: 12px; }
    .site-footer { padding: 30px 0 24px; background: #e7f3ea; color: #294b3b; }
    .footer-top { display: flex; justify-content: space-between; align-items: start; gap: 28px; padding-bottom: 20px; border-bottom: 1px solid #c9dfcf; }
    .footer-brand p { max-width: 420px; margin: 10px 0 0; color: #547063; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 17px; max-width: 600px; }
    .footer-links a { color: #315b46; font-size: 13px; text-decoration: none; }
    .footer-links a:hover { text-decoration: underline; text-underline-offset: 4px; }
    .copyright { padding-top: 15px; color: #587367; font-size: 12px; }
    .floating { position: fixed; right: 16px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .float-link { display: flex; align-items: center; justify-content: center; min-width: 46px; min-height: 46px; padding: 8px 11px; border: 1px solid #c3deca; background: #fff; color: var(--green-dark); box-shadow: 0 4px 15px rgba(27,67,48,.12); text-decoration: none; font-size: 12px; font-weight: 700; }
    .qr-pop { display: none; position: absolute; right: 56px; bottom: 0; width: 160px; padding: 10px; border: 1px solid var(--line); background: #fff; box-shadow: 0 8px 24px rgba(27,67,48,.14); }
    .qr-pop img { display: block; width: 100%; height: auto; }
    .qr-pop span { display: block; padding-top: 6px; text-align: center; color: var(--ink); font-size: 12px; }
    .float-link:hover + .qr-pop, .qr-pop:hover { display: block; }
    .to-top { cursor: pointer; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .45s ease, transform .45s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 960px) {
      .header-inner { gap: 12px; }
      .nav-links { gap: 0; }
      .nav-links a { padding-inline: 6px; font-size: 12px; }
      .hero-inner { gap: 30px; }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .header-inner { min-height: 66px; flex-wrap: wrap; }
      .menu-toggle { display: inline-flex; align-items: center; gap: 7px; margin-left: auto; }
      .nav-cta { order: 3; padding: 8px 11px; font-size: 12px; }
      .nav-links { display: none; order: 4; width: 100%; padding: 5px 0 12px; justify-content: flex-start; gap: 0; }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 7px 10px 7px 0; margin-right: 8px; font-size: 13px; }
      .hero { padding: 51px 0 36px; }
      .hero-inner { grid-template-columns: 1fr; gap: 28px; }
      .hero-side { padding: 0; border: 0; }
      .hero-side h2 { font-size: 17px; }
      .metrics { grid-template-columns: repeat(2,1fr); row-gap: 16px; margin-top: 28px; }
      section.content-section { padding: 48px 0; }
      .section-heading { display: block; }
      .section-heading p { margin-top: 11px; }
      .section-heading h2 { font-size: 26px; }
      .intro-grid, .form-layout { grid-template-columns: 1fr; gap: 24px; }
      .service-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
      .steps { grid-template-columns: repeat(2,minmax(0,1fr)); row-gap: 25px; }
      .testimonial-grid, .case-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
      .footer-top { display: block; }
      .footer-links { justify-content: flex-start; margin-top: 18px; }
    }
    @media (max-width: 480px) {
      .container { width: calc(100% - 28px); }
      .brand { font-size: 14px; }
      .ai-page-logo { width: 34px; }
      .hero-copy { font-size: 15px; }
      .hero-actions { gap: 9px; }
      .hero-actions .button { padding: 11px 13px; font-size: 13px; }
      .service-grid, .testimonial-grid, .case-grid, .article-links { grid-template-columns: 1fr; }
      .capability-list { grid-template-columns: 1fr; gap: 0; }
      .steps { gap: 18px 14px; }
      .metric { padding-right: 8px; }
      .score-panel { align-items: flex-start; padding: 15px; }
      .score-number { font-size: 30px; }
      .contact-form { grid-template-columns: 1fr; }
      .field.wide, .form-actions { grid-column: auto; }
      .floating { right: 9px; bottom: 12px; }
      .float-link { min-width: 42px; min-height: 42px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }