:root {
      color-scheme: light;
      --ink: #173126;
      --muted: #596b60;
      --green: #31834c;
      --green-dark: #21663a;
      --lime: #c9ed62;
      --paper: #f4f8f1;
      --line: #dce7d9;
      --white: #fff;
      --coral: #ee805f;
      --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; }
    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; border-bottom: 1px solid rgba(220,231,217,.9); background: rgba(250,252,248,.94); backdrop-filter: blur(12px); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 19px; white-space: nowrap; }
    .brand img { width: 38px; height: 38px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 10px 11px; text-decoration: none; color: #40574a; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--green-dark); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 20px; border: 1px solid var(--green); border-radius: 4px; background: var(--green); color: white; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .nav-cta { min-height: 40px; padding-inline: 15px; font-size: 13px; white-space: nowrap; }
    .button:hover, .nav-cta:hover { background: var(--green-dark); box-shadow: 0 8px 20px rgba(33,102,58,.18); transform: translateY(-2px); }
    .button.secondary { border-color: #b7cfb7; background: transparent; color: var(--ink); }
    .button.secondary:hover { background: #eaf2e7; box-shadow: none; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: white; color: var(--ink); border-radius: 4px; cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 80px 0 46px; background: #eaf3e4; border-bottom: 1px solid var(--line); }
    .hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5; background-image: linear-gradient(rgba(49,131,76,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(49,131,76,.07) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(to bottom, #000, transparent 85%); }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0,1.1fr) minmax(280px,.75fr); gap: 54px; align-items: center; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--green-dark); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--coral); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 680px; margin: 16px 0 18px; font-size: clamp(38px, 6vw, 68px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 620px; color: #42584a; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
    .hero-note { margin: 20px 0 0; color: var(--muted); font-size: 13px; }
    .hero-panel { position: relative; padding: 24px; border: 1px solid #c9ddc3; background: rgba(255,255,255,.72); box-shadow: 12px 12px 0 #d8e9ca; }
    .panel-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
    .panel-top strong { font-size: 15px; }
    .live-mark { width: 9px; height: 9px; display: inline-block; margin-right: 7px; border-radius: 50%; background: #61a846; box-shadow: 0 0 0 4px #e4f2dc; }
    .model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-top: 17px; }
    .model-grid span { padding: 10px 8px; border: 1px solid #e1eadc; background: #f8fbf6; text-align: center; 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: 0; margin-top: 48px; border: 1px solid #cadbc5; background: rgba(255,255,255,.8); }
    .metric { padding: 18px 22px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; font-size: 21px; line-height: 1.25; }
    .metric span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section.alt { background: #edf4e9; border-block: 1px solid #e0e9dc; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 690px; }
    .section-kicker { margin-bottom: 8px; color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
    h2 { margin-bottom: 10px; font-size: clamp(27px, 4vw, 40px); line-height: 1.2; }
    .section-intro { margin-bottom: 0; color: var(--muted); }
    .text-link { color: var(--green-dark); font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 4px; }
    .intro-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
    .intro-copy { color: #42584a; }
    .intro-copy p:last-child { margin-bottom: 0; }
    .feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; margin: 0; padding: 0; list-style: none; }
    .feature-list li { padding: 13px 0 13px 25px; border-bottom: 1px solid var(--line); position: relative; font-weight: 650; }
    .feature-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }
    .service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
    .service-item { padding: 19px; border-top: 2px solid #8dbb75; background: white; transition: transform .22s ease, box-shadow .22s ease; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(38,74,46,.1); }
    .service-item h3 { margin-bottom: 7px; font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .platform-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
    .platform-tags span { padding: 7px 12px; border: 1px solid #cbdcc5; background: #f7faf5; color: #385343; font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 21px 22px; border-top: 1px solid #c5d8bd; }
    .workflow article::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 18px; color: var(--green); font-size: 28px; font-weight: 800; }
    .workflow h3 { margin-bottom: 7px; font-size: 17px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-grid, .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .case { overflow: hidden; background: white; border: 1px solid var(--line); }
    .case img { display: block; width: 100%; height: auto; aspect-ratio: 16/9; object-fit: cover; }
    .case-copy { padding: 16px 18px 18px; }
    .case-copy h3 { margin-bottom: 5px; font-size: 16px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .comparison { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; min-width: 740px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #e6ede3; vertical-align: top; }
    th { background: #e7f1e1; font-size: 13px; }
    td { color: #42584a; font-size: 13px; }
    tr:last-child td { border-bottom: 0; }
    .rating { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; padding: 18px 22px; border-left: 4px solid var(--lime); background: #fff; }
    .rating strong { font-size: 29px; line-height: 1; }
    .stars { color: #d07b23; letter-spacing: 2px; font-size: 19px; }
    .rating small { color: var(--muted); }
    .solution-band { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 25px; padding: 28px; background: #dceccf; }
    .solution-band h3 { margin-bottom: 7px; font-size: 22px; }
    .solution-band p { margin: 0; color: #42584a; }
    .review { padding: 20px; border: 1px solid var(--line); background: white; }
    .review blockquote { margin: 0 0 18px; color: #405649; font-size: 14px; }
    .review cite { color: var(--green-dark); font-size: 12px; font-style: normal; font-weight: 800; }
    .feedback-note { margin: 0 0 18px; color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid #cbdcc5; }
    .faq-item { border-bottom: 1px solid #cbdcc5; }
    .faq-item summary { position: relative; padding: 17px 42px 17px 0; cursor: pointer; list-style: none; font-weight: 750; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 6px; top: 13px; color: var(--green); font-size: 23px; transition: transform .2s ease; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { max-width: 850px; margin: 0; padding: 0 35px 17px 0; color: var(--muted); font-size: 14px; }
    .news-list { display: grid; grid-template-columns: repeat(5,1fr); border-block: 1px solid var(--line); }
    .news-list a { min-height: 94px; padding: 17px; border-right: 1px solid var(--line); display: flex; flex-direction: column; justify-content: space-between; text-decoration: none; transition: background .2s ease; }
    .news-list a:last-child { border-right: 0; }
    .news-list a:hover { background: #e8f1e3; }
    .news-list strong { font-size: 14px; }
    .news-list span { color: var(--green-dark); font-size: 12px; }
    .contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
    .contact-details { display: grid; gap: 14px; margin-top: 24px; }
    .contact-details div { padding-bottom: 12px; border-bottom: 1px solid var(--line); }
    .contact-details strong { display: block; font-size: 13px; }
    .contact-details a, .contact-details span { color: var(--muted); font-size: 14px; text-decoration: none; overflow-wrap: anywhere; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 22px; border: 1px solid var(--line); background: white; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #405649; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #cbd9c7; border-radius: 2px; background: #fbfcfa; color: var(--ink); }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .join-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 0; border-block: 1px solid var(--line); }
    .join-row h3 { margin: 0 0 5px; font-size: 20px; }
    .join-row p { margin: 0; color: var(--muted); }
    .site-footer { padding: 28px 0; background: #e5eee0; color: #263e30; border-top: 1px solid #d3e0ce; }
    .footer-main { display: flex; align-items: start; justify-content: space-between; gap: 24px; }
    .footer-main p { margin: 7px 0 0; color: #526459; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: flex-end; }
    .footer-links a { color: #365743; font-size: 13px; text-decoration: none; }
    .copyright { margin: 18px 0 0; padding-top: 14px; border-top: 1px solid #d1dfcc; color: #58695e; font-size: 12px; }
    .float-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .float-contact a { display: inline-flex; align-items: center; justify-content: center; min-width: 48px; min-height: 44px; padding: 0 13px; border: 1px solid #d1dfcc; background: white; color: var(--green-dark); text-decoration: none; font-size: 12px; font-weight: 800; box-shadow: 0 5px 18px rgba(25,54,33,.12); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }
    @media (max-width: 980px) {
      .nav-row { flex-wrap: wrap; padding-block: 12px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-cta { margin-left: 0; }
      .nav-links { display: none; width: 100%; justify-content: flex-start; padding: 4px 0 8px; border-top: 1px solid var(--line); }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 9px 12px 9px 0; margin-right: 12px; }
      .hero-inner { gap: 30px; }
      .service-grid { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero { padding-top: 56px; }
      .hero-inner, .intro-layout, .contact-layout { grid-template-columns: 1fr; }
      .hero-inner { gap: 30px; }
      .hero-panel { max-width: 500px; }
      .metrics { grid-template-columns: 1fr 1fr; margin-top: 34px; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .section { padding: 56px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 12px; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .workflow { grid-template-columns: 1fr 1fr; }
      .case-grid, .review-grid { grid-template-columns: 1fr; }
      .news-list { grid-template-columns: 1fr; }
      .news-list a { min-height: auto; gap: 10px; border-right: 0; border-bottom: 1px solid var(--line); }
      .news-list a:last-child { border-bottom: 0; }
      .solution-band { grid-template-columns: 1fr; }
      .join-row, .footer-main { align-items: flex-start; flex-direction: column; }
      .footer-links { justify-content: flex-start; }
      .contact-form { grid-template-columns: 1fr; padding: 17px; }
      .field.full { grid-column: auto; }
      .float-contact { right: 10px; bottom: 12px; }
      .float-contact a { min-width: 42px; padding-inline: 10px; }
    }
    @media (max-width: 420px) {
      .brand { font-size: 17px; }
      .brand img { width: 32px; height: 32px; }
      .service-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr; }
      .model-grid { grid-template-columns: repeat(2,1fr); }
      .hero-actions .button { width: 100%; }
    }