:root {
      color-scheme: light;
      --ink: #17231d;
      --muted: #5d6b62;
      --line: #dfe8df;
      --paper: #f7faf5;
      --white: #fff;
      --green: #a4e43f;
      --green-deep: #285d2b;
      --lime-pale: #eff8df;
      --coral: #e67856;
      --blue: #dfeef0;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 82px; }
    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; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; z-index: 20; top: 0; background: rgba(247,250,245,.96); border-bottom: 1px solid rgba(23,35,29,.08); backdrop-filter: blur(12px); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
    .brand img { display: block; width: 142px; max-height: 48px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 0; }
    .nav-links a { padding: 9px 10px; color: #34443a; font-size: 13px; white-space: nowrap; border-radius: 4px; transition: color .2s, background .2s; }
    .nav-links a:hover { color: var(--green-deep); background: var(--lime-pale); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 18px; border: 1px solid var(--green-deep); border-radius: 4px; background: var(--green-deep); color: #fff; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s; }
    .nav-cta { min-height: 38px; padding: 7px 13px; font-size: 13px; white-space: nowrap; }
    .button:hover, .nav-cta:hover { background: #1f4b24; box-shadow: 0 7px 18px rgba(40,93,43,.18); transform: translateY(-2px); }
    .button.secondary { background: transparent; color: var(--green-deep); }
    .button.secondary:hover { background: var(--lime-pale); box-shadow: none; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; color: var(--ink); background: #fff; cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 74px 0 48px; background: #edf6e3; border-bottom: 1px solid #d8e7ce; }
    .hero::before { position: absolute; content: ""; width: 400px; height: 400px; right: -140px; top: -190px; border: 1px solid rgba(40,93,43,.16); border-radius: 50%; box-shadow: 0 0 0 35px rgba(40,93,43,.035), 0 0 0 75px rgba(40,93,43,.025); }
    .hero::after { position: absolute; content: ""; width: 210px; height: 210px; right: 12%; bottom: -150px; background: rgba(164,228,63,.25); transform: rotate(45deg); }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1.25fr) minmax(260px,.75fr); align-items: center; gap: 44px; }
    .eyebrow { margin: 0 0 14px; color: var(--green-deep); font-size: 12px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    h1 { max-width: 700px; margin: 0; font-size: clamp(38px, 6vw, 68px); line-height: 1.1; letter-spacing: 0; }
    .hero-copy { max-width: 650px; margin: 20px 0 25px; color: #48584b; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin: 17px 0 0; color: #53654f; font-size: 13px; }
    .hero-panel { border-left: 3px solid var(--green-deep); padding: 22px 0 22px 24px; }
    .hero-panel strong { display: block; max-width: 290px; font-size: 25px; line-height: 1.3; }
    .hero-panel p { max-width: 340px; margin: 12px 0 0; color: var(--muted); }
    .hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
    .hero-tags span { padding: 6px 9px; border: 1px solid #d2e2c9; border-radius: 3px; background: rgba(255,255,255,.58); color: #354b36; font-size: 12px; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 38px; border-top: 1px solid #d6e4ce; }
    .metric { padding: 18px 14px 0 0; }
    .metric b { display: block; color: var(--green-deep); font-size: 16px; }
    .metric span { color: var(--muted); font-size: 12px; }
    main { overflow: hidden; }
    .section { padding: 72px 0; }
    .section.tint { background: #eff5ed; border-block: 1px solid #e0e9dd; }
    .section.dark-band { background: #243c2a; color: #f7fbf4; }
    .section.dark-band .section-intro, .section.dark-band .muted { color: #c5d3c4; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 720px; }
    .kicker { margin: 0 0 6px; color: var(--green-deep); font-size: 12px; font-weight: 800; }
    .dark-band .kicker { color: #b8e96b; }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 40px); line-height: 1.2; letter-spacing: 0; }
    .section-intro { margin: 12px 0 0; color: var(--muted); }
    .text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--green-deep); font-weight: 700; }
    .text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
    .dark-band .text-link { color: #c6ed80; }
    .intro-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 52px; align-items: start; }
    .intro-copy p { margin: 0 0 15px; color: #46564a; }
    .intro-points { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; margin-top: 24px; border-top: 1px solid var(--line); }
    .intro-points div { padding: 15px 0; border-bottom: 1px solid var(--line); }
    .intro-points b { display: block; font-size: 15px; }
    .intro-points span { color: var(--muted); font-size: 13px; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
    .model-cloud span { padding: 6px 10px; border: 1px solid #d8e3d5; border-radius: 3px; background: #fff; color: #405146; font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: #d9e5d6; border: 1px solid #d9e5d6; }
    .service-item { min-height: 158px; padding: 22px; background: #fff; transition: background .2s, transform .2s; }
    .service-item:hover { position: relative; z-index: 1; background: #f6fbeF; transform: translateY(-3px); }
    .service-item h3, .scenario h3, .case h3, .quote h3 { margin: 0 0 8px; font-size: 17px; }
    .service-item p, .scenario p, .case p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-mark { display: block; width: 27px; height: 4px; margin-bottom: 13px; background: var(--green); }
    .scenario-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
    .scenario { padding-top: 17px; border-top: 2px solid #b9d6ab; }
    .scenario .index { margin-bottom: 9px; color: #6b8d63; font-size: 12px; font-weight: 800; }
    .process { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; counter-reset: step; }
    .process-item { position: relative; padding: 18px 18px 16px 0; border-top: 1px solid #96b98b; counter-increment: step; }
    .process-item::before { content: "0" counter(step); display: block; margin-bottom: 13px; color: #b8e96b; font-size: 24px; font-weight: 800; }
    .process-item h3 { margin: 0 0 7px; font-size: 16px; }
    .process-item p { margin: 0; color: #c5d3c4; font-size: 13px; }
    .network-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 52px; align-items: start; }
    .network-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
    .network-list div { padding: 13px 0; border-bottom: 1px solid var(--line); }
    .network-list b { display: block; font-size: 14px; }
    .network-list span { color: var(--muted); font-size: 12px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .case { display: grid; grid-template-columns: minmax(0,1fr) minmax(150px,.72fr); gap: 20px; align-items: center; padding: 18px; border: 1px solid var(--line); background: #fff; }
    .image-frame { overflow: hidden; background: #eaf1e7; }
    .image-frame img { display: block; width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; transition: transform .35s; }
    .case:hover img { transform: scale(1.035); }
    .case-label { display: inline-block; margin-bottom: 10px; color: var(--green-deep); font-size: 12px; font-weight: 800; }
    .case p { margin-bottom: 10px; }
    .score-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 34px; align-items: start; }
    .score-box { padding: 24px; background: #e8f4d9; border-left: 4px solid var(--green-deep); }
    .score-box .score { color: var(--green-deep); font-size: 50px; line-height: 1; font-weight: 800; }
    .score-box .stars { margin-top: 12px; color: #986413; letter-spacing: 0; }
    .score-box p { margin: 12px 0 0; color: #46564a; font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 560px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid #e6ece4; vertical-align: top; font-size: 13px; }
    th { background: #edf5e8; color: #304535; font-size: 12px; }
    tr:last-child td { border-bottom: 0; }
    .positive { color: #285d2b; font-weight: 700; }
    .quotes { display: grid; grid-template-columns: repeat(3,1fr); gap: 0 26px; }
    .quote { padding: 19px 0; border-top: 1px solid #96b98b; }
    .quote p { margin: 0 0 14px; color: #dce7d9; font-size: 14px; }
    .quote h3 { margin-bottom: 2px; font-size: 13px; }
    .quote span { color: #b7c7b4; font-size: 12px; }
    .fit-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
    .fit-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; margin-top: 15px; }
    .fit-list span { padding: 10px 0; border-bottom: 1px solid var(--line); color: #405146; font-size: 14px; }
    .form-panel { padding: 24px; background: #fff; border: 1px solid var(--line); }
    .form-grid { 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 { color: #405146; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; border: 1px solid #cfdacf; border-radius: 3px; padding: 11px 12px; background: #fbfdf9; color: var(--ink); outline: none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: #59934a; box-shadow: 0 0 0 3px rgba(89,147,74,.12); }
    .field textarea { min-height: 112px; resize: vertical; }
    .form-note { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 16px 34px 16px 0; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; top: 15px; right: 4px; content: "+"; color: var(--green-deep); font-size: 20px; line-height: 1; transition: transform .2s; }
    details[open] summary::after { transform: rotate(45deg); }
    details p { max-width: 850px; margin: -3px 0 17px; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5,1fr); gap: 16px; }
    .article-link { display: flex; min-height: 110px; flex-direction: column; justify-content: space-between; padding: 15px; border-top: 2px solid #a9cf82; background: #fff; transition: transform .2s, background .2s; }
    .article-link:hover { background: #eff8df; transform: translateY(-3px); }
    .article-link span { color: #526158; font-size: 13px; }
    .article-link b { color: var(--green-deep); font-size: 12px; }
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 26px; align-items: start; }
    .contact-block { padding-top: 15px; border-top: 1px solid #b7c7b4; }
    .contact-block h3 { margin: 0 0 8px; font-size: 15px; }
    .contact-block p { margin: 4px 0; color: #d0ddcc; font-size: 13px; overflow-wrap: anywhere; }
    .contact-qr { width: 132px; margin-top: 10px; border: 5px solid #fff; background: #fff; }
    .contact-qr img { display: block; width: 100%; }
    .links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 24px; padding-top: 18px; border-top: 1px solid #506651; }
    .links a { color: #e1ebdd; font-size: 12px; }
    .links a:hover { color: #c6ed80; text-decoration: underline; }
    .footer { padding: 18px 0; background: #1c3021; color: #d7e2d4; font-size: 12px; }
    .footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
    .footer p { margin: 0; }
    .footer a { color: #d7e2d4; }
    .floating { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
    .floating a { display: inline-flex; align-items: center; justify-content: center; min-width: 48px; min-height: 44px; padding: 0 12px; border: 1px solid #285d2b; border-radius: 3px; background: #285d2b; color: #fff; box-shadow: 0 5px 16px rgba(23,35,29,.16); font-size: 12px; font-weight: 700; }
    .floating a:hover { background: #1f4b24; }
    .reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 940px) {
      .nav-row { flex-wrap: wrap; padding-block: 11px; }
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; margin-left: auto; }
      .nav-cta { order: 2; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; padding: 5px 0; border-top: 1px solid var(--line); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 9px 12px 9px 0; margin-right: 12px; }
      .hero-inner { grid-template-columns: 1fr .75fr; gap: 24px; }
      .scenario-grid { grid-template-columns: repeat(2,1fr); }
      .article-list { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .nav-row { gap: 10px; }
      .brand img { width: 126px; }
      .nav-cta { min-height: 36px; padding: 6px 10px; }
      .nav-links a { font-size: 12px; }
      .hero { padding: 53px 0 35px; }
      .hero-inner, .intro-layout, .network-layout, .score-layout, .fit-layout { grid-template-columns: 1fr; gap: 26px; }
      h1 { font-size: 42px; }
      .hero-copy { font-size: 15px; }
      .hero-panel { padding: 5px 0 5px 16px; }
      .hero-panel strong { font-size: 21px; }
      .metrics { grid-template-columns: 1fr 1fr; row-gap: 14px; }
      .metric { padding-top: 12px; }
      .section { padding: 52px 0; }
      .section-head { display: block; margin-bottom: 23px; }
      .section-head > .text-link { margin-top: 15px; }
      .service-grid { grid-template-columns: 1fr 1fr; }
      .service-item { min-height: 0; padding: 16px 13px; }
      .service-item h3 { font-size: 15px; }
      .service-item p { font-size: 12px; }
      .scenario-grid { gap: 18px; }
      .process { grid-template-columns: 1fr 1fr; gap: 16px; }
      .network-list { gap: 0 15px; }
      .case-grid { grid-template-columns: 1fr; }
      .case { grid-template-columns: 1fr .8fr; gap: 13px; padding: 13px; }
      .quotes { grid-template-columns: 1fr 1fr; gap: 0 18px; }
      .fit-list { gap: 0 14px; }
      .form-panel { padding: 17px; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .article-list { grid-template-columns: 1fr 1fr; gap: 10px; }
      .article-link { min-height: 96px; padding: 12px; }
      .contact-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
      .contact-grid .contact-block:first-child { grid-column: 1 / -1; }
      .footer-inner { align-items: flex-start; flex-direction: column; }
      .floating { right: 10px; bottom: 12px; }
      .floating a { min-width: 43px; min-height: 40px; padding: 0 9px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }