:root {
      color-scheme: light;
      --ink: #17271e;
      --muted: #5d6d62;
      --green: #b7f34a;
      --green-dark: #316b2e;
      --lime-soft: #eaf6d9;
      --paper: #f5f9f3;
      --white: #fff;
      --line: #dfe8dc;
      --coral: #e66e4d;
      --blue: #dceff0;
      --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; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .topbar { position: sticky; z-index: 20; top: 0; background: rgba(245,249,243,.96); border-bottom: 1px solid rgba(32,65,39,.1); backdrop-filter: blur(12px); }
    .nav { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 800; white-space: nowrap; }
    .ai-page-logo { display: block; width: 42px; max-width: 100%; height: auto; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 11px; color: #3e5043; font-size: 13px; white-space: nowrap; }
    .nav-links a:hover { color: var(--green-dark); }
    .nav-action, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 5px; background: var(--green); color: #1d3216; font-weight: 800; padding: 12px 18px; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
    .nav-action:hover, .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(72,118,35,.17); background: #c9fa6b; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: #fff; color: var(--ink); padding: 9px 12px; border-radius: 5px; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 60px; background: #e8f3df; border-bottom: 1px solid #d9e8ce; }
    .hero::before { content: ""; position: absolute; inset: 0; opacity: .42; background-image: linear-gradient(rgba(60,102,43,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(60,102,43,.08) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(to bottom, #000, transparent 92%); }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(290px, .75fr); align-items: center; gap: 54px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px; border: 1px solid #c9dfb5; color: #386436; background: rgba(255,255,255,.6); font-size: 12px; font-weight: 700; }
    .eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #5e9b38; }
    h1 { max-width: 720px; margin: 20px 0 16px; font-size: clamp(38px, 5vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 630px; color: #4d6151; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .button.secondary { background: #fff; border: 1px solid #cbdcc2; }
    .hero-note { margin-top: 18px; color: #5d6d62; font-size: 13px; }
    .hero-panel { padding: 25px; border: 1px solid rgba(69,111,48,.22); background: rgba(255,255,255,.82); box-shadow: 12px 12px 0 rgba(130,175,81,.15); }
    .hero-panel-top { display: flex; justify-content: space-between; gap: 14px; align-items: center; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
    .hero-panel h2 { margin: 0; font-size: 17px; }
    .live-mark { color: #477839; font-size: 12px; font-weight: 700; }
    .model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 16px; }
    .model-grid span { display: grid; place-items: center; min-height: 42px; padding: 7px; background: #f1f7e9; color: #354b35; font-size: 12px; font-weight: 700; }
    .panel-foot { margin: 17px 0 0; color: var(--muted); font-size: 12px; }
    .metrics { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 44px; background: #d5e4cd; border: 1px solid #d5e4cd; }
    .metric { padding: 19px 20px; background: #f8fbf5; }
    .metric strong { display: block; font-size: 22px; }
    .metric span { color: var(--muted); font-size: 12px; }
    section { scroll-margin-top: 90px; }
    .section { padding: 76px 0; }
    .section.tinted { background: #edf5e7; border-block: 1px solid #e0ead8; }
    .section.white { background: #fff; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
    .section-head h2 { margin: 0; font-size: clamp(27px, 3vw, 38px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { max-width: 570px; margin: 0; color: var(--muted); }
    .kicker { display: block; margin-bottom: 8px; color: #4d8139; font-size: 12px; font-weight: 800; letter-spacing: 0; }
    .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
    .intro-grid p { margin: 0 0 14px; color: #506055; }
    .capability-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
    .capability-list div { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; font-size: 15px; }
    .capability-list span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .service { min-height: 166px; padding: 20px; background: #fff; border: 1px solid var(--line); transition: transform .22s, box-shadow .22s; }
    .service:hover, .review:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(40,73,37,.09); }
    .service .number { color: #579044; font-size: 12px; font-weight: 800; }
    .service h3 { margin: 11px 0 6px; font-size: 17px; }
    .service p { margin: 0; color: var(--muted); font-size: 13px; }
    .tagline { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
    .tagline span { padding: 6px 10px; border: 1px solid #d2e1cb; color: #435b45; background: #f8fbf5; font-size: 12px; }
    .flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 2px solid #91bd69; }
    .flow-step { position: relative; padding: 20px 22px 0 0; }
    .flow-step::before { content: ""; position: absolute; top: -7px; left: 0; width: 12px; height: 12px; background: var(--green-dark); border: 2px solid var(--paper); border-radius: 50%; }
    .flow-step small { color: #4c7e3a; font-weight: 800; }
    .flow-step h3 { margin: 7px 0 5px; font-size: 17px; }
    .flow-step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: start; }
    .solution-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .solution-list article { padding: 16px; border-left: 3px solid #92c45c; background: rgba(255,255,255,.7); }
    .solution-list h3 { margin: 0 0 5px; font-size: 15px; }
    .solution-list p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-network { padding: 25px; background: #1c3326; color: #f3f9ed; }
    .service-network h3 { margin: 0 0 10px; font-size: 21px; }
    .service-network p { color: #d0ddcf; font-size: 14px; }
    .service-network ul { padding-left: 18px; color: #e4eee1; font-size: 13px; }
    .service-network li + li { margin-top: 8px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .case { display: grid; grid-template-columns: 160px 1fr; align-items: center; gap: 20px; padding: 16px; border: 1px solid var(--line); background: #fff; }
    .case img { display: block; width: 160px; aspect-ratio: 4 / 3; object-fit: cover; }
    .case h3 { margin: 0 0 7px; font-size: 17px; }
    .case p { margin: 0; color: var(--muted); font-size: 13px; }
    .case.single img { aspect-ratio: 1; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 19px; background: #fff; border: 1px solid var(--line); transition: transform .22s, box-shadow .22s; }
    .stars { color: #638b36; letter-spacing: 0; font-size: 13px; }
    .review p { min-height: 78px; color: #435448; font-size: 14px; }
    .review strong { font-size: 13px; }
    .review span { display: block; color: var(--muted); font-size: 12px; }
    .score-box { display: flex; align-items: center; gap: 23px; padding: 24px; background: #e9f5d9; border-left: 5px solid #77ae3b; margin-bottom: 24px; }
    .score { font-size: 44px; font-weight: 850; line-height: 1; }
    .score small { font-size: 14px; font-weight: 600; }
    .rating-stars { color: #4d7a31; font-size: 19px; letter-spacing: 0; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 680px; text-align: left; }
    th, td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #f0f6e9; font-size: 13px; }
    td { color: #506055; font-size: 13px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .match-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 38px; align-items: start; }
    .match-copy { padding: 23px; background: #dff0d2; }
    .match-copy h3 { margin: 0 0 8px; font-size: 22px; }
    .match-copy p { color: #506055; }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { color: #405045; font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; border: 1px solid #cfdcc9; border-radius: 3px; padding: 11px 12px; color: var(--ink); background: #fff; }
    input:focus, select:focus, textarea:focus { outline: 2px solid #a4ce76; border-color: #78a954; }
    textarea { min-height: 110px; resize: vertical; }
    .form-submit { grid-column: 1 / -1; justify-self: start; }
    .price-row { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 1px; background: #d9e5d4; border: 1px solid #d9e5d4; }
    .price-row div { padding: 17px; background: #fff; }
    .price-row strong { display: block; }
    .price-row span { color: var(--muted); font-size: 13px; }
    .article-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-grid a { padding: 16px; min-height: 92px; background: #f2f7ed; border: 1px solid #dfe8d9; font-size: 14px; font-weight: 700; transition: background .2s; }
    .article-grid a:hover { background: #e4f2d5; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 35px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; top: 12px; color: #4b7f35; font-size: 23px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; max-width: 850px; padding: 0 0 17px; color: var(--muted); font-size: 14px; }
    .contact-band { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 22px; padding: 27px; background: #dff0d2; }
    .contact-band h2 { margin: 0 0 4px; font-size: 25px; }
    .contact-band p { margin: 0; color: #536452; }
    .contact-options { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 16px; font-size: 13px; }
    .footer { padding: 34px 0 22px; background: #1c3326; color: #f0f6ed; }
    .footer-main { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; align-items: start; }
    .footer p { margin: 8px 0; color: #d0ddcf; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 17px; font-size: 13px; }
    .footer-links a { color: #e5f1dc; }
    .footer-bottom { margin-top: 24px; padding-top: 15px; border-top: 1px solid #3b5242; color: #c2d0c2; font-size: 12px; }
    .floating-contact { position: fixed; z-index: 15; right: 18px; bottom: 18px; display: grid; gap: 8px; }
    .floating-contact a, .to-top { display: grid; place-items: center; min-width: 48px; min-height: 45px; padding: 8px; border: 1px solid #cbdac1; background: #fff; color: #28482d; box-shadow: 0 4px 15px rgba(32,57,34,.12); font-size: 12px; font-weight: 800; }
    .to-top { cursor: pointer; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-action { padding: 10px 12px; font-size: 13px; }
      .service-grid { grid-template-columns: repeat(3, 1fr); }
      .article-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav { min-height: 66px; }
      .menu-toggle { display: inline-flex; }
      .nav-action { display: none; }
      .nav-links { display: none; position: absolute; top: 65px; left: 0; right: 0; align-items: stretch; padding: 8px 16px 14px; border-bottom: 1px solid var(--line); background: #f5f9f3; }
      .nav-links.open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px; font-size: 14px; }
      .hero { padding: 54px 0 38px; }
      .hero-inner, .intro-grid, .solution-grid, .match-grid { grid-template-columns: 1fr; gap: 28px; }
      .hero-panel { max-width: 500px; }
      .metrics { grid-template-columns: repeat(2, 1fr); margin-top: 32px; }
      .section { padding: 56px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 10px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .flow { grid-template-columns: repeat(2, 1fr); row-gap: 26px; }
      .case-grid { grid-template-columns: 1fr; }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .contact-band { grid-template-columns: 1fr; }
      .footer-main { grid-template-columns: 1fr; }
    }
    @media (max-width: 500px) {
      .brand { font-size: 16px; }
      .ai-page-logo { width: 36px; }
      h1 { font-size: 39px; }
      .hero-copy { font-size: 15px; }
      .model-grid { grid-template-columns: repeat(2, 1fr); }
      .service-grid, .review-grid, .solution-list, .capability-list { grid-template-columns: 1fr; }
      .service { min-height: auto; }
      .case { grid-template-columns: 110px 1fr; gap: 13px; padding: 11px; }
      .case img { width: 110px; }
      .article-grid { grid-template-columns: repeat(2, 1fr); }
      .score-box { align-items: flex-start; flex-direction: column; gap: 10px; }
      form { grid-template-columns: 1fr; }
      .field.full, .form-submit { grid-column: auto; }
      .price-row { grid-template-columns: 1fr; }
      .floating-contact { right: 10px; bottom: 10px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }