:root {
      color-scheme: light;
      --ink: #183532;
      --muted: #58716e;
      --teal: #087f78;
      --teal-dark: #075c58;
      --mint: #dff4ed;
      --lime: #c9ed85;
      --paper: #f4fbfa;
      --white: #ffffff;
      --line: #d7e9e5;
      --coral: #e8785e;
      --shadow: 0 14px 34px rgba(22, 77, 69, .09);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    img { max-width: 100%; height: auto; }
    .container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(244, 251, 250, .96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; font-weight: 800; }
    .ai-page-logo { display: block; width: 42px; }
    .brand-name { font-size: 17px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 0; }
    .nav-links a { padding: 9px 10px; color: #385b57; font-size: 13px; white-space: nowrap; }
    .nav-links a:hover { color: var(--teal); }
    .nav-links .nav-cta { margin-left: 8px; padding: 10px 17px; color: #fff; background: var(--teal); border-radius: 4px; font-weight: 700; }
    .menu-toggle { display: none; border: 1px solid var(--line); border-radius: 4px; padding: 8px 12px; background: var(--white); color: var(--ink); cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 74px 0 62px; background: linear-gradient(128deg, #dff4ed 0%, #f4fbfa 54%, #e8f3c9 100%); }
    .hero::before, .hero::after { position: absolute; content: ""; pointer-events: none; }
    .hero::before { width: 340px; height: 340px; right: -100px; top: -135px; border: 1px solid rgba(8,127,120,.2); border-radius: 50%; box-shadow: 0 0 0 34px rgba(8,127,120,.035), 0 0 0 72px rgba(8,127,120,.03); }
    .hero::after { width: 230px; height: 90px; right: 12%; bottom: 42px; border-top: 1px solid rgba(8,127,120,.25); border-bottom: 1px solid rgba(8,127,120,.15); transform: skewY(-25deg); }
    .hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(250px, .8fr); align-items: center; gap: 56px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--teal-dark); font-size: 13px; font-weight: 750; letter-spacing: 0; }
    .eyebrow::before { width: 22px; height: 2px; content: ""; background: var(--coral); }
    h1 { max-width: 720px; margin: 18px 0; font-size: clamp(40px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 620px; margin: 0; color: #47635f; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 48px; padding: 0 20px; border: 1px solid var(--teal); border-radius: 4px; color: var(--teal-dark); font-weight: 750; transition: transform .2s, box-shadow .2s, background .2s; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(8,127,120,.16); }
    .button-primary { background: var(--teal); color: var(--white); }
    .button-primary:hover { background: var(--teal-dark); }
    .hero-note { margin: 18px 0 0; color: var(--muted); font-size: 13px; }
    .hero-console { padding: 24px 0 24px 26px; border-left: 1px solid rgba(8,127,120,.24); }
    .console-label { margin: 0 0 12px; color: var(--teal-dark); font-size: 12px; font-weight: 800; text-transform: uppercase; }
    .console-title { margin: 0 0 20px; font-size: 22px; line-height: 1.35; }
    .flow-line { display: grid; grid-template-columns: 34px 1fr; gap: 13px; align-items: start; padding: 13px 0; border-top: 1px solid rgba(8,127,120,.18); }
    .flow-number { display: grid; width: 30px; aspect-ratio: 1; place-items: center; border-radius: 50%; background: var(--teal); color: white; font-size: 13px; font-weight: 800; }
    .flow-line strong { display: block; font-size: 14px; }
    .flow-line span:last-child { color: var(--muted); font-size: 13px; }
    .section { padding: 74px 0; }
    .section-soft { background: #eaf6f2; }
    .section-white { background: var(--white); }
    .section-head { max-width: 720px; margin-bottom: 34px; }
    .section-head h2 { margin: 9px 0 10px; font-size: clamp(28px, 4vw, 40px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { margin: 0; color: var(--muted); }
    .section-head-row { display: flex; align-items: end; justify-content: space-between; gap: 24px; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); background: var(--white); }
    .metric { padding: 22px 24px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--teal-dark); font-size: 20px; }
    .metric span { color: var(--muted); font-size: 13px; }
    .intro-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
    .intro-aside { padding-top: 8px; }
    .intro-aside h2 { margin: 10px 0 14px; font-size: 36px; line-height: 1.2; }
    .intro-aside p { color: var(--muted); }
    .text-link { display: inline-flex; margin-top: 10px; color: var(--teal-dark); font-weight: 750; border-bottom: 1px solid var(--teal); }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 26px; }
    .capability { padding: 17px 0; border-top: 1px solid var(--line); }
    .capability h3 { margin: 0 0 5px; font-size: 16px; }
    .capability p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { padding: 22px; background: var(--white); border: 1px solid var(--line); border-radius: 4px; transition: transform .2s, box-shadow .2s; }
    .service-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
    .service-index { display: block; margin-bottom: 13px; color: var(--teal); font-size: 12px; font-weight: 800; }
    .service-item h3 { margin: 0 0 8px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-more { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 22px; margin-top: 24px; padding: 23px 26px; background: var(--teal-dark); color: white; }
    .service-more p { margin: 0; color: #d5efea; }
    .service-more .button { border-color: var(--lime); color: var(--ink); background: var(--lime); }
    .model-band { padding: 26px 0; background: #183f3a; color: #fff; }
    .model-band-inner { display: flex; align-items: center; gap: 28px; }
    .model-band h2 { flex: 0 0 150px; margin: 0; font-size: 17px; }
    .model-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-tags span { padding: 5px 9px; border: 1px solid rgba(255,255,255,.24); border-radius: 3px; color: #e5f6f1; font-size: 12px; }
    .process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: steps; }
    .process-step { position: relative; padding: 22px 24px 18px 0; border-top: 2px solid var(--teal); counter-increment: steps; }
    .process-step::before { display: block; margin-bottom: 15px; color: var(--teal); content: "0" counter(steps); font-size: 13px; font-weight: 800; }
    .process-step h3 { margin: 0 0 7px; font-size: 17px; }
    .process-step p { margin: 0; color: var(--muted); font-size: 14px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .solution { padding: 24px 0; border-top: 3px solid var(--teal); }
    .solution:nth-child(2) { border-color: var(--coral); }
    .solution:nth-child(3) { border-color: #9abf37; }
    .solution h3 { margin: 0 0 8px; font-size: 19px; }
    .solution p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }
    .solution span { color: var(--teal-dark); font-size: 13px; font-weight: 750; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--white); }
    table { width: 100%; min-width: 700px; border-collapse: collapse; text-align: left; }
    th, td { padding: 15px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #eaf6f2; font-size: 13px; }
    td { color: #405d58; font-size: 14px; }
    tbody tr:last-child td { border-bottom: 0; }
    .rating { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-bottom: 20px; padding: 18px 22px; background: #183f3a; color: white; }
    .rating strong { color: var(--lime); font-size: 26px; }
    .rating span { color: #e1f1ec; }
    .stars { color: var(--lime) !important; letter-spacing: 0; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .case-card { overflow: hidden; background: var(--white); border: 1px solid var(--line); }
    .case-card img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
    .case-copy { padding: 18px; }
    .case-copy span { color: var(--teal); font-size: 12px; font-weight: 800; }
    .case-copy h3 { margin: 5px 0; font-size: 18px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 26px; }
    .review { padding: 22px 0; border-top: 1px solid var(--line); }
    .review blockquote { margin: 0 0 16px; color: #35524e; font-size: 15px; }
    .review cite { color: var(--muted); font-size: 13px; font-style: normal; }
    .article-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 32px; }
    .article-link { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 15px 0; border-top: 1px solid var(--line); }
    .article-link span { font-weight: 650; }
    .article-link small { flex: 0 0 auto; color: var(--teal); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .tag-cloud a { padding: 8px 12px; border: 1px solid var(--line); border-radius: 3px; background: var(--white); color: #355d57; font-size: 13px; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
    details { padding: 15px 0; border-top: 1px solid var(--line); }
    summary { position: relative; padding-right: 28px; cursor: pointer; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; right: 3px; content: "+"; color: var(--teal); font-size: 20px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 55px; align-items: start; }
    .contact-info h2 { margin: 9px 0 12px; font-size: 36px; line-height: 1.2; }
    .contact-info > p { color: var(--muted); }
    .contact-lines { margin-top: 24px; }
    .contact-lines p { margin: 8px 0; color: #365651; }
    .contact-lines a { color: var(--teal-dark); font-weight: 700; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; padding: 24px; background: var(--white); border: 1px solid var(--line); }
    .field { display: grid; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { color: #385752; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #cbded9; border-radius: 3px; background: #fbfdfc; color: var(--ink); }
    .field textarea { min-height: 116px; resize: vertical; }
    .contact-form .button { justify-self: start; cursor: pointer; }
    .contact-qr { width: 124px; margin-top: 18px; border: 5px solid white; }
    .network { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
    .network-block h3 { margin: 0 0 13px; font-size: 17px; }
    .network-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
    .network-links a { color: var(--teal-dark); font-size: 14px; text-decoration: underline; text-decoration-color: #a9cbc2; text-underline-offset: 4px; }
    .footer { padding: 28px 0; background: #e1efeb; color: #294944; }
    .footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
    .footer p { margin: 0; font-size: 13px; }
    .footer-nav { display: flex; flex-wrap: wrap; gap: 12px 18px; font-size: 13px; }
    .footer-nav a { color: #294944; }
    .float-contact { position: fixed; right: 18px; bottom: 18px; z-index: 10; display: grid; gap: 8px; }
    .float-contact a { display: grid; min-width: 48px; min-height: 48px; place-items: center; padding: 0 13px; border-radius: 4px; background: var(--teal-dark); color: white; box-shadow: var(--shadow); font-size: 13px; font-weight: 750; }
    .float-contact a:last-child { background: var(--coral); }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .menu-toggle { display: inline-flex; }
      .nav-links { display: none; position: absolute; top: 76px; left: 0; right: 0; padding: 12px 20px 18px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 14px 18px rgba(22,77,69,.08); }
      .nav-links.is-open { display: flex; justify-content: flex-start; }
      .nav-links a { padding: 9px 10px; }
      .nav-links .nav-cta { margin-left: 0; }
      .hero-grid { gap: 30px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .model-band-inner { align-items: flex-start; flex-direction: column; gap: 12px; }
    }
    @media (max-width: 680px) {
      .container { width: min(100% - 32px, 1160px); }
      .header-inner { min-height: 68px; }
      .nav-links { top: 68px; }
      .hero { padding: 54px 0 42px; }
      .hero-grid, .intro-layout, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
      .hero-console { padding: 18px 0 0; border-left: 0; border-top: 1px solid rgba(8,127,120,.24); }
      .hero::after { right: -80px; bottom: 25px; }
      .section { padding: 54px 0; }
      .metrics { grid-template-columns: repeat(2, 1fr); }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .capability-list, .service-grid, .solution-grid, .case-grid, .reviews, .article-list, .faq-list, .network { grid-template-columns: 1fr; }
      .service-more { grid-template-columns: 1fr; }
      .process { grid-template-columns: repeat(2, 1fr); gap: 10px 20px; }
      .section-head-row { align-items: flex-start; flex-direction: column; }
      .contact-form { grid-template-columns: 1fr; padding: 18px; }
      .field-wide { grid-column: auto; }
      .footer-inner { align-items: flex-start; flex-direction: column; }
      .float-contact { right: 10px; bottom: 10px; }
      .float-contact a { min-width: 44px; min-height: 44px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
    }