:root {
      color-scheme: light;
      --ink: #18231d;
      --muted: #5e6b63;
      --green: #2c9c55;
      --green-dark: #176b38;
      --lime: #c8f26a;
      --line: #dfe8df;
      --paper: #f7faf5;
      --white: #ffffff;
      --soft: #edf5eb;
      --max: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 86px; }
    body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, "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(--max), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(247,250,245,.94); border-bottom: 1px solid rgba(223,232,223,.9); backdrop-filter: blur(14px); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
    .brand img { display: block; width: 36px; max-height: 40px; object-fit: contain; }
    .brand-name { font-size: 17px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 9px 10px; color: #35433a; font-size: 13px; white-space: nowrap; transition: color .2s; }
    .nav-links a:hover { color: var(--green-dark); }
    .nav-action, .button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--green); border-radius: 5px; padding: 0 17px; background: var(--green); color: white; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s; }
    .nav-action { flex: 0 0 auto; min-height: 40px; font-size: 13px; }
    .button:hover, .nav-action:hover { background: var(--green-dark); box-shadow: 0 8px 20px rgba(44,156,85,.2); transform: translateY(-2px); }
    .button.secondary { color: var(--green-dark); background: white; border-color: #b9d7be; }
    .button.secondary:hover { background: #f0f8ee; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: white; color: var(--ink); cursor: pointer; }
    .hero { overflow: hidden; position: relative; padding: 72px 0 52px; background: #eaf5e8; border-bottom: 1px solid #d9e8d6; }
    .hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(112deg, rgba(200,242,106,.3), transparent 48%), repeating-linear-gradient(135deg, transparent 0 42px, rgba(44,156,85,.045) 42px 43px); pointer-events: none; }
    .hero-inner { position: relative; }
    .hero-kicker, .eyebrow { color: var(--green-dark); font-size: 12px; font-weight: 800; text-transform: uppercase; }
    .hero h1 { max-width: 780px; margin: 14px 0 16px; font-size: clamp(38px, 6vw, 68px); line-height: 1.1; }
    .hero h1 span { color: var(--green-dark); }
    .hero-copy { max-width: 680px; margin: 0; color: #425348; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero-note { margin: 14px 0 0; color: #526258; font-size: 13px; }
    .hero-bottom { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 48px; border: 1px solid #d2e2d0; background: #d2e2d0; }
    .metric { padding: 17px 18px; background: rgba(255,255,255,.78); }
    .metric strong { display: block; color: var(--green-dark); font-size: 17px; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 66px 0; }
    .section.alt { background: #eef5ec; border-block: 1px solid #e1ebe0; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 27px; }
    .section-head h2 { margin: 5px 0 0; font-size: clamp(26px, 3.5vw, 38px); line-height: 1.2; }
    .section-head p { max-width: 540px; margin: 0; color: var(--muted); }
    .about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 42px; align-items: start; }
    .about-copy p { color: var(--muted); }
    .about-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; margin: 22px 0 0; padding: 0; list-style: none; }
    .about-points li { padding: 12px 0; border-bottom: 1px solid var(--line); font-weight: 650; }
    .about-points li::before { content: "＋"; margin-right: 9px; color: var(--green); font-weight: 800; }
    .platform-panel { padding: 22px; border: 1px solid #d9e7d7; background: white; }
    .platform-panel h3 { margin: 0 0 10px; font-size: 18px; }
    .platform-panel p { margin: 0; color: var(--muted); font-size: 14px; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
    .model-cloud span { border: 1px solid #dce9d9; padding: 5px 9px; background: #f5faf3; color: #365243; font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 22px; }
    .service-item { padding: 20px 0; border-top: 1px solid var(--line); }
    .service-item h3 { margin: 0 0 7px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-index { display: block; margin-bottom: 8px; color: var(--green); font-size: 12px; font-weight: 800; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
    .workflow article { padding-top: 14px; border-top: 2px solid #7dbb79; }
    .workflow article::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 12px; color: var(--green-dark); font-size: 13px; font-weight: 800; }
    .workflow h3 { margin: 0 0 7px; font-size: 16px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 14px; }
    .industry-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 18px; }
    .industry-list div { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .industry-list strong { display: block; font-size: 14px; }
    .industry-list span { color: var(--muted); font-size: 12px; }
    .network-band { display: grid; grid-template-columns: 1fr 1.1fr; gap: 36px; align-items: center; padding: 28px; border-left: 4px solid var(--green); background: white; }
    .network-band h3 { margin: 0 0 8px; font-size: 22px; }
    .network-band p { margin: 0; color: var(--muted); }
    .network-tags { display: flex; flex-wrap: wrap; gap: 9px; }
    .network-tags span { padding: 8px 11px; border: 1px solid #dce9d9; background: #f7faf5; font-size: 13px; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; border-collapse: collapse; min-width: 700px; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    th { background: #eaf5e8; font-size: 13px; }
    td { color: #4f5e54; font-size: 14px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .rating { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
    .rating strong { color: var(--green-dark); font-size: 30px; }
    .stars { color: #e4a82b; font-size: 20px; letter-spacing: 0; }
    .rating span:last-child { color: var(--muted); font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .case-card { overflow: hidden; background: white; border: 1px solid var(--line); transition: transform .22s, box-shadow .22s; }
    .case-card:hover, .quote:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(32,71,42,.09); }
    .image-frame { overflow: hidden; aspect-ratio: 16 / 9; background: #e7eee5; }
    .image-frame img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-copy { padding: 16px; }
    .case-copy h3 { margin: 0 0 5px; font-size: 16px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .quote { padding: 19px; border-top: 2px solid #83bd76; background: white; transition: transform .22s, box-shadow .22s; }
    .quote p { margin: 0 0 15px; color: #405046; font-size: 14px; }
    .quote cite { color: var(--green-dark); font-size: 12px; font-style: normal; font-weight: 800; }
    .price-note { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 20px; padding: 22px; background: #e7f2e3; }
    .price-note h3 { margin: 0 0 6px; }
    .price-note p { margin: 0; color: var(--muted); font-size: 14px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { content: "+"; position: absolute; right: 3px; color: var(--green-dark); font-size: 20px; }
    .faq-list details[open] summary::after { content: "−"; }
    .faq-list details p { max-width: 800px; margin: 0 0 17px; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-list a { min-height: 88px; display: flex; flex-direction: column; justify-content: space-between; padding: 14px; border: 1px solid var(--line); background: white; transition: border-color .2s, transform .2s; }
    .article-list a:hover { transform: translateY(-2px); border-color: #8bc38b; }
    .article-list strong { font-size: 13px; }
    .article-list span { color: var(--green-dark); font-size: 12px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; align-items: start; }
    .contact-details { display: grid; gap: 13px; }
    .contact-line { padding-bottom: 12px; border-bottom: 1px solid var(--line); }
    .contact-line strong { display: block; font-size: 13px; }
    .contact-line span, .contact-line a { color: var(--muted); font-size: 14px; }
    .qr { width: 132px; margin-top: 4px; padding: 6px; border: 1px solid var(--line); background: white; }
    .qr img { display: block; width: 100%; }
    .form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .field { display: grid; 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: 44px; border: 1px solid #cfdbd0; border-radius: 3px; padding: 10px 12px; color: var(--ink); background: white; }
    .field textarea { min-height: 120px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid rgba(44,156,85,.22); border-color: var(--green); }
    .form-submit { grid-column: 1 / -1; justify-self: start; cursor: pointer; }
    .footer { padding: 26px 0; background: #e8f0e6; color: #27362c; border-top: 1px solid #d7e3d5; }
    .footer-top { display: flex; justify-content: space-between; gap: 24px; align-items: start; }
    .footer p { margin: 4px 0 0; color: #58675c; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: flex-end; }
    .footer-links a { color: #35533d; font-size: 12px; }
    .copyright { margin-top: 18px; padding-top: 12px; border-top: 1px solid #d3dfd1; color: #58675c; font-size: 12px; }
    .floating { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .floating a { display: grid; place-items: center; width: 46px; height: 46px; border: 1px solid #c9ddc7; border-radius: 50%; background: white; color: var(--green-dark); box-shadow: 0 5px 18px rgba(32,71,42,.12); font-size: 12px; font-weight: 800; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.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-links { display: none; position: absolute; top: 72px; left: 0; right: 0; padding: 10px 20px 16px; border-bottom: 1px solid var(--line); background: var(--paper); }
      .nav-links.open { display: grid; grid-template-columns: repeat(3, 1fr); }
      .nav-links a { padding: 10px 8px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-action { margin-left: 0; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--max), calc(100% - 32px)); }
      .nav-row { min-height: 64px; gap: 9px; }
      .brand img { width: 31px; }
      .brand-name { font-size: 15px; }
      .nav-action { min-height: 37px; padding-inline: 11px; font-size: 12px; }
      .nav-links { top: 64px; }
      .nav-links.open { grid-template-columns: repeat(2, 1fr); }
      .hero { padding: 54px 0 35px; }
      .hero h1 { font-size: 42px; }
      .hero-copy { font-size: 15px; }
      .hero-bottom { grid-template-columns: repeat(2, 1fr); margin-top: 34px; }
      .section { padding: 48px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 12px; }
      .about-grid, .network-band, .contact-grid { grid-template-columns: 1fr; gap: 22px; }
      .about-points { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: repeat(2, 1fr); gap: 22px 16px; }
      .industry-list { grid-template-columns: repeat(2, 1fr); }
      .case-grid, .quotes { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: repeat(2, 1fr); }
      .price-note { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full, .form-submit { grid-column: auto; }
      .footer-top { flex-direction: column; }
      .footer-links { justify-content: flex-start; }
      .floating { right: 12px; bottom: 13px; }
    }