:root {
      color-scheme: light;
      --ink: #182720;
      --muted: #63716a;
      --green: #167c56;
      --green-dark: #0d5c41;
      --mint: #e5f5eb;
      --lime: #d8f36a;
      --paper: #f8faf8;
      --line: #dfe8e1;
      --white: #fff;
      --coral: #ec765d;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; height: auto; }
    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; z-index: 20; top: 0; border-bottom: 1px solid rgba(223,232,225,.9); background: rgba(248,250,248,.96); 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; flex: 0 0 auto; gap: 11px; }
    .brand img { width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-size: 17px; font-weight: 800; line-height: 1.2; }
    .brand-note { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 500; }
    .nav-wrap { display: flex; align-items: center; gap: 17px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 9px; color: #425149; font-size: 13px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--green); }
    .header-cta, .button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 9px; padding: 0 19px; border: 1px solid var(--green); border-radius: 6px; background: var(--green); color: var(--white); font-weight: 700; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .header-cta { min-height: 40px; padding-inline: 14px; font-size: 13px; white-space: nowrap; }
    .button:hover, .header-cta:hover { transform: translateY(-2px); background: var(--green-dark); box-shadow: 0 8px 18px rgba(22,124,86,.16); }
    .button.secondary { border-color: rgba(255,255,255,.55); background: transparent; color: var(--white); }
    .button.secondary:hover { background: rgba(255,255,255,.12); box-shadow: none; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: var(--white); color: var(--ink); cursor: pointer; }
    .menu-toggle span, .menu-toggle::before, .menu-toggle::after { display: block; width: 17px; height: 2px; margin: 4px auto; background: currentColor; content: ""; }
    .hero { position: relative; overflow: hidden; background: #116a4b; color: var(--white); }
    .hero::before { position: absolute; top: -175px; right: -120px; width: 520px; height: 520px; border: 1px solid rgba(230,255,235,.23); border-radius: 50%; content: ""; }
    .hero::after { position: absolute; top: -95px; right: -35px; width: 350px; height: 350px; border: 1px solid rgba(230,255,235,.18); border-radius: 50%; content: ""; }
    .hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1.2fr) minmax(280px,.8fr); align-items: center; gap: 54px; padding-block: 78px 54px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: #d8f36a; font-size: 13px; font-weight: 700; }
    .eyebrow::before { width: 22px; height: 2px; background: currentColor; content: ""; }
    h1 { max-width: 680px; margin: 18px 0 18px; font-size: clamp(38px, 5.4vw, 64px); line-height: 1.12; }
    .hero-copy { max-width: 660px; margin: 0; color: #e1f0e8; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero .button { border-color: var(--lime); background: var(--lime); color: #173422; }
    .hero .button:hover { background: #e5fa93; }
    .hero .button.secondary { border-color: rgba(255,255,255,.55); background: transparent; color: var(--white); }
    .hero-side { padding: 24px 0 24px 26px; border-left: 1px solid rgba(255,255,255,.28); }
    .hero-side h2 { margin: 0 0 17px; font-size: 16px; }
    .model-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-tags span { padding: 7px 10px; border: 1px solid rgba(255,255,255,.27); border-radius: 4px; color: #f5fff7; font-size: 12px; }
    .hero-aside-note { margin: 18px 0 0; color: #d6eade; font-size: 13px; }
    .hero-strip { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid rgba(255,255,255,.24); }
    .hero-stat { padding: 17px 20px 21px 0; }
    .hero-stat + .hero-stat { padding-left: 22px; border-left: 1px solid rgba(255,255,255,.22); }
    .hero-stat strong { display: block; color: var(--lime); font-size: 18px; }
    .hero-stat span { color: #e0eee6; font-size: 12px; }
    .section { padding-block: 76px; }
    .section.tint { background: #eff6f0; }
    .section.dark { background: #18382a; color: var(--white); }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
    .section-heading > div { max-width: 690px; }
    .kicker { margin: 0 0 8px; color: var(--green); font-size: 12px; font-weight: 800; }
    .dark .kicker { color: var(--lime); }
    h2 { margin: 0; font-size: clamp(27px, 3.2vw, 38px); line-height: 1.2; }
    .section-intro { max-width: 620px; margin: 12px 0 0; color: var(--muted); }
    .dark .section-intro { color: #d0e1d6; }
    .text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--green); font-size: 14px; font-weight: 700; white-space: nowrap; }
    .intro-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 58px; align-items: start; }
    .intro-copy { color: #44534a; }
    .intro-copy p { margin: 0 0 14px; }
    .intro-points { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; margin: 0; padding: 0; list-style: none; }
    .intro-points li { padding: 15px 0; border-top: 1px solid var(--line); }
    .intro-points strong { display: block; margin-bottom: 4px; font-size: 15px; }
    .intro-points span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
    .service-item { min-height: 178px; padding: 20px; border-top: 3px solid var(--green); background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(30,68,45,.09); }
    .service-item h3 { margin: 0 0 9px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-number { display: block; margin-bottom: 16px; color: var(--green); font-size: 12px; font-weight: 800; }
    .workflow-band { padding-block: 66px; background: #dff1e4; }
    .steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 30px; }
    .step { position: relative; padding: 0 22px 0 0; }
    .step:not(:last-child)::after { position: absolute; top: 16px; right: 15px; left: 52px; height: 1px; background: #9bc9aa; content: ""; }
    .step-index { position: relative; z-index: 1; display: grid; width: 34px; height: 34px; place-items: center; border: 1px solid var(--green); border-radius: 50%; background: #dff1e4; color: var(--green-dark); font-size: 13px; font-weight: 800; }
    .step h3 { margin: 15px 0 7px; font-size: 16px; }
    .step p { margin: 0; color: #526259; font-size: 13px; }
    .scenario-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
    .scenario-copy { padding: 8px 0; }
    .scenario-copy h3 { margin: 0 0 11px; font-size: 22px; }
    .scenario-copy p { margin: 0 0 18px; color: var(--muted); }
    .scenario-copy .button { margin-top: 4px; }
    .scenario-image { overflow: hidden; background: #e1ebe3; }
    .scenario-image img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
    .scenario-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 25px; }
    .scenario-tile { padding: 17px; border: 1px solid var(--line); background: rgba(255,255,255,.75); }
    .scenario-tile h3 { margin: 0 0 7px; font-size: 15px; }
    .scenario-tile p { margin: 0; color: var(--muted); font-size: 12px; }
    .network { display: grid; grid-template-columns: .85fr 1.15fr; gap: 55px; align-items: center; }
    .network-copy p { color: #d0e1d6; }
    .network-list { display: flex; flex-wrap: wrap; gap: 9px; }
    .network-list span { padding: 9px 13px; border: 1px solid rgba(255,255,255,.24); color: #f4fff7; font-size: 13px; }
    .network-extra { margin-top: 17px; color: #c6dacd; font-size: 13px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--white); }
    .comparison { width: 100%; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 15px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
    .comparison thead th { background: #edf5ee; font-size: 13px; }
    .comparison tbody th { width: 22%; font-size: 14px; }
    .comparison td { color: #536057; font-size: 13px; }
    .comparison tbody tr:last-child th, .comparison tbody tr:last-child td { border-bottom: 0; }
    .rating-panel { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 21px; padding: 21px 24px; background: #e6f4e9; }
    .rating-panel strong { display: block; color: var(--green-dark); font-size: 28px; }
    .rating-panel span { color: #516057; font-size: 13px; }
    .stars { color: #c28a1e; font-size: 19px; letter-spacing: 0; white-space: nowrap; }
    .comparison-note { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .case-card { overflow: hidden; background: var(--white); }
    .case-card img { width: 100%; aspect-ratio: 1; object-fit: cover; }
    .case-body { padding: 18px; }
    .case-body h3 { margin: 0 0 7px; font-size: 16px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 13px; }
    .reviews { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .review { padding: 20px; border-left: 3px solid #95c977; background: var(--white); }
    .review p { min-height: 72px; margin: 0 0 16px; color: #435249; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .article-grid { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); }
    .article-link { display: flex; min-height: 106px; flex-direction: column; justify-content: space-between; padding: 17px 20px 17px 0; border-bottom: 1px solid var(--line); }
    .article-link:not(:nth-child(3n+1)) { padding-left: 20px; border-left: 1px solid var(--line); }
    .article-link span { font-weight: 700; }
    .article-link small { color: var(--green); }
    .article-link:hover span { color: var(--green); }
    .form-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 56px; align-items: start; }
    .contact-copy p { color: var(--muted); }
    .contact-details { margin-top: 24px; }
    .contact-details p { margin: 9px 0; color: var(--ink); font-size: 14px; }
    .contact-details a { color: var(--green-dark); }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .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%; min-height: 45px; padding: 10px 12px; border: 1px solid #cfdcd2; border-radius: 4px; outline: 0; background: var(--white); color: var(--ink); }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(22,124,86,.1); }
    .contact-form .button { justify-self: start; cursor: pointer; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 18px 34px 18px 0; font-weight: 700; cursor: pointer; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { position: absolute; top: 17px; right: 4px; color: var(--green); content: "+"; font-size: 22px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: 0; padding: 0 30px 18px 0; color: var(--muted); font-size: 14px; }
    .tags { display: flex; flex-wrap: wrap; gap: 9px; }
    .tags span { padding: 7px 11px; border: 1px solid #bcd5c3; color: #365b43; font-size: 13px; }
    .pricing-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; margin-top: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .pricing-row article { padding: 18px 20px 18px 0; }
    .pricing-row article + article { padding-left: 20px; border-left: 1px solid var(--line); }
    .pricing-row h3 { margin: 0 0 6px; font-size: 15px; }
    .pricing-row p { margin: 0; color: var(--muted); font-size: 13px; }
    .footer { padding-block: 30px; border-top: 1px solid var(--line); background: #edf3ee; color: #27372d; }
    .footer-main { display: flex; align-items: start; justify-content: space-between; gap: 28px; }
    .footer-brand { max-width: 420px; }
    .footer-brand p { margin: 10px 0 0; color: #58665d; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 18px; max-width: 600px; }
    .footer-links a { color: #405449; font-size: 13px; }
    .footer-links a:hover { color: var(--green); }
    .copyright { display: flex; justify-content: space-between; gap: 18px; margin-top: 22px; padding-top: 14px; border-top: 1px solid #d6e1d8; color: #647068; font-size: 12px; }
    .floating-contact { position: fixed; z-index: 25; right: 18px; bottom: 20px; display: flex; align-items: center; gap: 9px; padding: 11px 15px; border: 0; border-radius: 4px; background: var(--green); color: var(--white); box-shadow: 0 8px 24px rgba(13,92,65,.24); font-weight: 700; cursor: pointer; }
    .floating-contact:hover { background: var(--green-dark); }
    .to-top { position: fixed; right: 24px; bottom: 79px; z-index: 24; display: grid; width: 40px; height: 40px; place-items: center; border: 1px solid var(--line); background: var(--white); color: var(--green-dark); opacity: 0; pointer-events: none; cursor: pointer; transition: opacity .2s ease; }
    .to-top.visible { opacity: 1; pointer-events: auto; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.in-view { opacity: 1; transform: translateY(0); }
    @media (max-width: 1040px) {
      .nav-links a { padding-inline: 6px; font-size: 12px; }
      .nav-wrap { gap: 9px; }
      .header-cta { padding-inline: 10px; }
      .service-grid { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 820px) {
      .header-inner { min-height: 68px; }
      .menu-toggle { display: block; flex: 0 0 auto; }
      .nav-wrap { position: absolute; top: 68px; right: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 10px; padding: 14px 20px 18px; border-bottom: 1px solid var(--line); background: var(--paper); }
      .nav-wrap.open { display: flex; }
      .nav-links { display: grid; grid-template-columns: repeat(3,1fr); }
      .nav-links a { padding: 10px 4px; }
      .header-cta { align-self: flex-start; }
      .hero-grid { grid-template-columns: 1fr; gap: 28px; padding-block: 62px 38px; }
      .hero-side { padding: 20px 0 0; border-top: 1px solid rgba(255,255,255,.28); border-left: 0; }
      .hero-strip { grid-template-columns: repeat(2,1fr); }
      .hero-stat:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.22); }
      .hero-stat:nth-child(4) { border-top: 1px solid rgba(255,255,255,.22); }
      .section { padding-block: 60px; }
      .intro-layout, .network, .form-layout { grid-template-columns: 1fr; gap: 30px; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .scenario-grid { grid-template-columns: repeat(2,1fr); }
      .case-grid { grid-template-columns: repeat(2,1fr); }
      .reviews { grid-template-columns: repeat(2,1fr); }
      .footer-main { flex-direction: column; }
      .footer-links { justify-content: flex-start; }
      .article-grid { grid-template-columns: repeat(2,1fr); }
      .article-link:not(:nth-child(3n+1)) { padding-left: 0; border-left: 0; }
      .article-link:nth-child(2n) { padding-left: 18px; border-left: 1px solid var(--line); }
    }
    @media (max-width: 560px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .brand img { width: 36px; max-height: 36px; }
      .brand-name { font-size: 15px; }
      .hero-grid { padding-top: 50px; }
      h1 { font-size: 40px; }
      .hero-copy { font-size: 15px; }
      .section-heading { align-items: flex-start; flex-direction: column; gap: 12px; }
      .intro-points, .service-grid, .scenario-layout, .scenario-grid, .case-grid, .reviews, .contact-form { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr 1fr; gap: 24px 8px; }
      .step:not(:last-child)::after { display: none; }
      .field.full { grid-column: auto; }
      .contact-form .button { grid-column: 1; }
      .rating-panel { align-items: flex-start; flex-direction: column; gap: 8px; }
      .comparison { min-width: 660px; }
      .pricing-row { grid-template-columns: 1fr; }
      .pricing-row article + article { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
      .article-grid { grid-template-columns: 1fr; }
      .article-link, .article-link:nth-child(2n) { min-height: 82px; padding: 14px 0; border-left: 0; }
      .copyright { flex-direction: column; gap: 5px; }
      .floating-contact { right: 12px; bottom: 14px; padding: 10px 12px; font-size: 13px; }
      .to-top { right: 17px; bottom: 65px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }