:root {
      color-scheme: light;
      --ink: #172a25;
      --muted: #61716a;
      --paper: #f6f8f4;
      --white: #fff;
      --line: #dfe7df;
      --green: #176e52;
      --green-dark: #10543f;
      --lime: #d8f16a;
      --orange: #ff925e;
      --blue: #cce9ed;
      --shadow: 0 14px 40px rgba(27, 65, 49, .08);
      --wrap: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a, summary { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--wrap), calc(100% - 40px)); margin-inline: auto; }
    .topbar { position: sticky; top: 0; z-index: 20; background: rgba(246,248,244,.94); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(223,231,223,.9); }
    .nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
    .brand img { display: block; width: 38px; height: 38px; object-fit: contain; }
    .brand-name { font-size: 17px; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: center; gap: 0; color: #40554d; font-size: 13px; }
    .nav-links a { padding: 9px 10px; border-radius: 6px; white-space: nowrap; transition: background .2s, color .2s; }
    .nav-links a:hover { background: #e8efe7; color: var(--green-dark); }
    .nav-actions { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: var(--white); border-radius: 6px; color: var(--ink); cursor: pointer; }
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 18px; border: 1px solid transparent; border-radius: 6px; font-weight: 700; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
    .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(18,85,62,.16); }
    .btn-primary { background: var(--green); color: #fff; }
    .btn-primary:hover { background: var(--green-dark); }
    .btn-light { background: #fff; color: var(--ink); border-color: var(--line); }
    .btn-lime { background: var(--lime); color: #213022; }
    .hero { overflow: hidden; position: relative; padding: 74px 0 44px; background: #eaf2e8; border-bottom: 1px solid #dfe9da; }
    .hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(23,110,82,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(23,110,82,.045) 1px, transparent 1px); background-size: 38px 38px; mask-image: linear-gradient(to bottom, #000, transparent 90%); }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0,1.1fr) minmax(290px,.8fr); align-items: center; gap: 42px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 20px; color: var(--green-dark); font-size: 13px; font-weight: 800; letter-spacing: 0; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--orange); }
    h1 { max-width: 680px; margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 610px; margin: 20px 0 26px; color: #52665d; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
    .hero-note { display: flex; align-items: center; gap: 10px; margin: 18px 0 0; color: #54655e; font-size: 13px; }
    .hero-note strong { color: var(--green-dark); }
    .signal-board { position: relative; padding: 23px; border: 1px solid #d2e1d0; border-radius: 8px; background: rgba(255,255,255,.82); box-shadow: var(--shadow); }
    .signal-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
    .signal-head strong { font-size: 15px; }
    .signal-head span { color: var(--green); font-size: 12px; font-weight: 700; }
    .signal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding-top: 15px; }
    .signal-item { min-height: 91px; padding: 13px; background: #f2f6f0; border-radius: 6px; }
    .signal-item b { display: block; font-size: 16px; }
    .signal-item span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
    .signal-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 15px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
    .signal-dot { width: 8px; height: 8px; display: inline-block; margin-right: 6px; border-radius: 50%; background: #7cb94d; }
    .metric-strip { position: relative; display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 42px; padding: 18px 0 0; border-top: 1px solid #d3e0d1; }
    .metric { padding: 0 20px; border-right: 1px solid #d3e0d1; }
    .metric:first-child { padding-left: 0; }
    .metric:last-child { border: 0; }
    .metric strong { display: block; font-size: 18px; }
    .metric span { color: var(--muted); font-size: 12px; }
    main { overflow: hidden; }
    section.content-section { padding: 76px 0; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head h2 { margin: 0; font-size: clamp(27px, 3vw, 38px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { max-width: 530px; margin: 0; color: var(--muted); }
    .kicker { margin: 0 0 9px; color: var(--green); font-size: 12px; font-weight: 800; }
    .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: start; }
    .intro-lead { margin: 0; font-size: 21px; line-height: 1.55; font-weight: 650; }
    .intro-copy { color: var(--muted); }
    .intro-points { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; margin-top: 24px; }
    .intro-point { display: flex; gap: 11px; padding: 13px 0; border-top: 1px solid var(--line); }
    .check { flex: 0 0 22px; display: grid; place-items: center; width: 22px; height: 22px; margin-top: 2px; border-radius: 50%; background: #e3f1d1; color: var(--green-dark); font-size: 13px; font-weight: 800; }
    .intro-point strong { display: block; font-size: 14px; }
    .intro-point span { color: var(--muted); font-size: 13px; }
    .services { background: #edf3eb; border-block: 1px solid #e0e9dd; }
    .service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
    .service { padding: 19px; border: 1px solid #dce6d9; border-radius: 6px; background: #fff; transition: transform .22s, box-shadow .22s, border-color .22s; }
    .service:hover { transform: translateY(-4px); border-color: #a9c9a8; box-shadow: var(--shadow); }
    .service-icon { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 15px; border-radius: 6px; background: #eaf3df; color: var(--green-dark); font-size: 18px; font-weight: 800; }
    .service h3 { margin: 0 0 7px; font-size: 16px; }
    .service p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-tag { display: inline-block; margin-top: 13px; color: var(--green); font-size: 11px; font-weight: 750; }
    .workflow-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 35px; }
    .step { position: relative; padding: 0 22px 0 0; }
    .step:not(:last-child)::after { content: ""; position: absolute; top: 18px; left: 43px; right: 18px; height: 1px; background: #b8cfbd; }
    .step-number { position: relative; z-index: 1; display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid #a9c9a8; border-radius: 50%; background: var(--paper); color: var(--green-dark); font-weight: 800; }
    .step h3 { margin: 16px 0 6px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .comparison { background: #fff; border-block: 1px solid var(--line); }
    .review-banner { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 24px; padding: 21px 24px; border-radius: 6px; background: #eaf2e8; }
    .review-banner strong { font-size: 20px; }
    .review-banner p { margin: 3px 0 0; color: var(--muted); }
    .rating { text-align: right; white-space: nowrap; }
    .rating b { display: block; color: var(--green-dark); font-size: 32px; line-height: 1.15; }
    .stars { color: #d78232; letter-spacing: 0; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; }
    table { width: 100%; min-width: 680px; border-collapse: collapse; background: #fff; }
    th, td { padding: 13px 16px; border-bottom: 1px solid var(--line); text-align: left; font-size: 13px; }
    th { background: #f2f6f0; color: #374e43; font-size: 12px; }
    tr:last-child td { border-bottom: 0; }
    td:first-child { font-weight: 700; }
    .good { color: var(--green-dark); font-weight: 750; }
    .solutions-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: start; }
    .solution-list { border-top: 1px solid var(--line); }
    .solution-row { display: grid; grid-template-columns: 125px 1fr; gap: 16px; padding: 17px 0; border-bottom: 1px solid var(--line); }
    .solution-row strong { color: var(--green-dark); font-size: 14px; }
    .solution-row span { color: var(--muted); font-size: 14px; }
    .network { padding: 24px; border-radius: 6px; background: #e8f0eb; }
    .network h3 { margin: 0 0 7px; font-size: 19px; }
    .network p { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
    .model-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-tags span { padding: 6px 10px; border: 1px solid #cbdccf; border-radius: 4px; background: #f8fbf7; color: #40564a; font-size: 12px; }
    .case-band { background: #eaf2e8; border-block: 1px solid #dfe9da; }
    .case-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 14px; }
    .case { overflow: hidden; background: #fff; border-radius: 6px; border: 1px solid #dce6d9; }
    .case-image { aspect-ratio: 16 / 10; overflow: hidden; background: #e5ece3; }
    .case-image img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-copy { padding: 16px; }
    .case-copy span { color: var(--green); font-size: 11px; font-weight: 800; }
    .case-copy h3 { margin: 5px 0; font-size: 16px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .quotes { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
    .quote { padding: 19px; border-top: 2px solid #b4d292; background: #fff; box-shadow: 0 5px 20px rgba(27,65,49,.045); }
    .quote p { margin: 0 0 17px; color: #40534a; font-size: 14px; }
    .quote footer { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0; background: transparent; color: var(--muted); font-size: 12px; }
    .quote footer strong { color: var(--ink); font-size: 13px; }
    .faq { background: #edf3eb; border-block: 1px solid #e0e9dd; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 14px; }
    details { align-self: start; border: 1px solid #d9e4d7; border-radius: 5px; background: #fff; }
    summary { position: relative; padding: 15px 42px 15px 16px; list-style: none; cursor: pointer; font-weight: 700; font-size: 14px; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 16px; top: 10px; color: var(--green); font-size: 22px; font-weight: 400; transition: transform .2s; }
    details[open] summary::after { transform: rotate(45deg); }
    details p { margin: 0; padding: 0 16px 16px; color: var(--muted); font-size: 13px; }
    .articles-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 10px; }
    .article-link { display: flex; min-height: 102px; flex-direction: column; justify-content: space-between; padding: 15px; border: 1px solid var(--line); border-radius: 5px; background: #fff; transition: border-color .2s, transform .2s; }
    .article-link:hover { transform: translateY(-3px); border-color: #a9c9a8; }
    .article-link strong { font-size: 14px; }
    .article-link span { color: var(--muted); font-size: 12px; }
    .contact { padding: 68px 0; background: #dcebdc; border-top: 1px solid #d0e1d0; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .contact h2 { margin: 0 0 12px; font-size: 34px; line-height: 1.2; }
    .contact-intro { max-width: 430px; color: #52665d; }
    .contact-list { display: grid; gap: 10px; margin-top: 24px; }
    .contact-list div { font-size: 14px; }
    .contact-list strong { display: inline-block; min-width: 96px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; padding: 23px; border: 1px solid #cbdcc9; border-radius: 6px; background: #fff; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 12px; font-weight: 750; }
    .field input, .field select, .field textarea { width: 100%; border: 1px solid #d7e0d7; border-radius: 4px; padding: 11px 12px; background: #fbfcfa; color: var(--ink); outline: none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: #5d9a77; box-shadow: 0 0 0 3px rgba(57,128,84,.12); }
    .field textarea { min-height: 105px; resize: vertical; }
    .contact-form .btn { grid-column: 1 / -1; justify-self: start; border: 0; }
    .footer { padding: 30px 0 22px; background: #f6f8f4; color: #34483e; border-top: 1px solid var(--line); }
    .footer-top { display: flex; justify-content: space-between; gap: 24px; align-items: start; }
    .footer p { margin: 8px 0; color: #61716a; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; max-width: 620px; justify-content: flex-end; font-size: 12px; }
    .footer-links a { color: #43594d; }
    .footer-links a:hover { color: var(--green); text-decoration: underline; }
    .copyright { margin-top: 20px; padding-top: 15px; border-top: 1px solid var(--line); color: #61716a; font-size: 12px; }
    .float-contact { position: fixed; right: 18px; bottom: 22px; z-index: 15; display: flex; flex-direction: column; gap: 8px; }
    .float-contact a { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid #cfdfcf; border-radius: 6px; background: #fff; color: var(--green-dark); box-shadow: 0 5px 18px rgba(27,65,49,.13); font-size: 12px; font-weight: 800; transition: transform .2s; }
    .float-contact a:hover { transform: translateY(-3px); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: none; }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 1000px) {
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .service-grid { grid-template-columns: repeat(3,1fr); }
      .articles-grid { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 780px) {
      .container { width: min(var(--wrap), calc(100% - 32px)); }
      .nav { min-height: 66px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-actions .btn { display: none; }
      .nav-links { display: none; position: absolute; top: 65px; left: 0; right: 0; padding: 10px 16px 15px; border-bottom: 1px solid var(--line); background: var(--paper); flex-direction: column; align-items: stretch; box-shadow: 0 12px 18px rgba(27,65,49,.08); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 11px 12px; font-size: 14px; }
      .hero { padding: 50px 0 32px; }
      .hero-inner { grid-template-columns: 1fr; gap: 26px; }
      .hero-copy { font-size: 16px; }
      .signal-board { max-width: 520px; }
      .metric-strip { grid-template-columns: 1fr 1fr; gap: 16px 0; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(3) { padding-left: 0; }
      section.content-section { padding: 58px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 12px; }
      .intro-grid, .solutions-grid, .contact-grid { grid-template-columns: 1fr; gap: 26px; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .case-grid { grid-template-columns: 1fr 1fr; }
      .case:first-child { grid-column: 1 / -1; }
      .quotes { grid-template-columns: 1fr 1fr; }
      .contact { padding: 55px 0; }
    }
    @media (max-width: 520px) {
      .brand img { width: 34px; height: 34px; }
      .hero h1 { font-size: 39px; }
      .hero-actions .btn { flex: 1 1 auto; }
      .signal-board { padding: 17px; }
      .metric { padding-inline: 12px; }
      .intro-points, .service-grid, .workflow-grid, .faq-list, .articles-grid, .quotes { grid-template-columns: 1fr; }
      .workflow-grid { gap: 22px; }
      .step { padding: 0; }
      .step:not(:last-child)::after { left: 19px; right: auto; top: 39px; bottom: -22px; width: 1px; height: auto; }
      .case-grid { grid-template-columns: 1fr; }
      .case:first-child { grid-column: auto; }
      .review-banner { align-items: flex-start; flex-direction: column; }
      .rating { text-align: left; }
      .solution-row { grid-template-columns: 1fr; gap: 4px; }
      .contact-form { grid-template-columns: 1fr; padding: 17px; }
      .field.full, .contact-form .btn { grid-column: auto; }
      .footer-top { flex-direction: column; }
      .footer-links { justify-content: flex-start; }
      .float-contact { right: 10px; bottom: 12px; }
      .float-contact a { width: 43px; height: 43px; }
    }