:root {
      color-scheme: light;
      --ink: #252321;
      --muted: #68615b;
      --paper: #fff9f2;
      --white: #fffefd;
      --line: #eadfd3;
      --orange: #ef641f;
      --orange-dark: #b83d12;
      --gold: #f6ba58;
      --green: #247765;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .topline { height: 5px; background: linear-gradient(90deg, #e84f19, #f8a63b 48%, #1c7b6a); }
    header { position: sticky; top: 0; z-index: 20; background: rgba(255,253,250,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .ai-page-logo { display: block; width: 42px; max-width: 100%; height: auto; }
    .nav-right { display: flex; align-items: center; gap: 18px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 8px 10px; color: #544b44; text-decoration: none; font-size: 14px; }
    .nav-links a:hover { color: var(--orange-dark); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 18px; border: 0; border-radius: 5px; background: var(--orange); color: white; text-decoration: none; font-weight: 750; transition: transform .2s, background .2s, box-shadow .2s; }
    .nav-cta:hover, .button:hover { background: var(--orange-dark); transform: translateY(-2px); box-shadow: 0 8px 18px #b83d1226; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: white; color: var(--ink); border-radius: 5px; cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 74px 0 46px; background: linear-gradient(115deg, #fff1df 0%, #fffaf4 56%, #f6f4e9 100%); border-bottom: 1px solid #f0e2d0; }
    .hero::before { content: ""; position: absolute; width: 360px; height: 360px; right: -110px; top: -150px; border: 1px solid #ed7a452b; border-radius: 50%; box-shadow: 0 0 0 36px #ed7a4510, 0 0 0 72px #ed7a450a; }
    .hero-grid { position: relative; display: grid; grid-template-columns: minmax(0,1.15fr) minmax(280px,.85fr); gap: 42px; align-items: center; }
    .eyebrow { margin: 0 0 12px; color: var(--orange-dark); font-size: 13px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    h1 { max-width: 680px; margin: 0; font-size: clamp(38px, 5vw, 64px); line-height: 1.08; letter-spacing: 0; }
    .hero-copy { max-width: 640px; margin: 20px 0 26px; color: #59534c; font-size: 18px; }
    .actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
    .button.secondary { border: 1px solid #d9c9b9; background: #fffdf9; color: var(--ink); }
    .button.secondary:hover { background: #fff4e7; }
    .hero-visual { padding: 22px; border: 1px solid #e9c5a3; border-radius: 8px; background: #fffdf9; box-shadow: 12px 14px 0 #ee793015; }
    .visual-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding-bottom: 15px; border-bottom: 1px solid var(--line); }
    .visual-head strong { font-size: 15px; }
    .live-mark { display: inline-flex; align-items: center; gap: 7px; color: var(--green); font-size: 12px; font-weight: 700; }
    .live-mark::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #38a889; box-shadow: 0 0 0 4px #38a8891c; }
    .model-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin: 17px 0; }
    .model-list span { padding: 10px 8px; border: 1px solid #eee3d8; border-radius: 4px; background: #fff9f2; text-align: center; font-size: 13px; font-weight: 700; }
    .workflow { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; color: #5c554e; font-size: 13px; }
    .workflow b { padding: 7px 9px; border-radius: 3px; background: #f8eadb; color: #6f452b; font-weight: 650; }
    .workflow i { color: #d67842; font-style: normal; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 42px; border-top: 1px solid #e9d8c5; }
    .metric { padding: 19px 16px 0 0; }
    .metric strong { display: block; color: var(--orange-dark); font-size: 25px; line-height: 1.2; }
    .metric span { color: var(--muted); font-size: 13px; }
    main { overflow: hidden; }
    section.content-section { padding: 68px 0; border-bottom: 1px solid #eee5db; }
    .section-heading { max-width: 720px; margin-bottom: 30px; }
    .section-heading h2 { margin: 0 0 9px; font-size: 32px; line-height: 1.2; letter-spacing: 0; }
    .section-heading p { margin: 0; color: var(--muted); }
    .intro-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 36px; align-items: start; }
    .intro-statement { padding-left: 20px; border-left: 4px solid var(--orange); font-size: 19px; font-weight: 650; }
    .intro-copy { color: #514b45; }
    .capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .capability { min-height: 145px; padding: 18px; border: 1px solid var(--line); border-top: 3px solid var(--orange); background: var(--white); transition: transform .2s, box-shadow .2s; }
    .capability:hover, .quote:hover { transform: translateY(-3px); box-shadow: 0 10px 24px #46331e12; }
    .capability h3 { margin: 0 0 7px; font-size: 17px; }
    .capability p { margin: 0; color: var(--muted); font-size: 14px; }
    .model-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
    .model-tags span { padding: 6px 11px; border: 1px solid #dfd5cb; border-radius: 3px; background: #fffdfa; color: #514a43; font-size: 13px; }
    .wide-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; padding: 28px 0; border-top: 1px solid var(--line); }
    .wide-feature:first-of-type { border-top: 0; }
    .wide-feature h3 { margin: 0 0 8px; font-size: 22px; }
    .wide-feature p { margin: 0; color: var(--muted); }
    .feature-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .feature-list span { padding: 8px 11px; background: #f6eee5; color: #51463c; font-size: 13px; }
    .industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .industry { padding-top: 14px; border-top: 2px solid #d97b45; }
    .industry h3 { margin: 0 0 8px; font-size: 18px; }
    .industry p { margin: 0; color: var(--muted); font-size: 14px; }
    .network-band { padding: 26px; border-left: 4px solid var(--green); background: #edf5f1; }
    .network-band p { margin: 0; color: #354e47; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
    .step { position: relative; padding: 4px 0 4px 48px; counter-increment: step; }
    .step::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0; color: var(--orange-dark); font-weight: 800; font-size: 18px; }
    .step h3 { margin: 0 0 5px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .showcase-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 20px; align-items: start; }
    .showcase-grid img { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: #f3eee8; }
    .showcase-grid .square { max-width: 440px; }
    .asset-caption { margin: 9px 0 0; color: var(--muted); font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--white); }
    table { width: 100%; border-collapse: collapse; min-width: 700px; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #eee5db; text-align: left; vertical-align: top; }
    th { background: #fff1e2; font-size: 14px; }
    td { color: #514b45; font-size: 14px; }
    tr:last-child td { border-bottom: 0; }
    .rating { display: flex; align-items: baseline; gap: 12px; margin-bottom: 17px; }
    .rating strong { color: var(--orange-dark); font-size: 40px; }
    .rating span { color: #a6541d; font-weight: 800; }
    .request-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; align-items: start; }
    .request-note { padding: 20px 0; border-top: 3px solid var(--green); }
    .request-note h3 { margin: 0 0 8px; }
    .request-note p { margin: 0 0 14px; color: var(--muted); }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { color: #4e4741; font-size: 14px; font-weight: 700; }
    input, select, textarea { width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #d9cfc5; border-radius: 4px; background: white; color: var(--ink); }
    input:focus, select:focus, textarea:focus { outline: 2px solid #ef641f35; border-color: var(--orange); }
    textarea { min-height: 112px; resize: vertical; }
    .form-submit { grid-column: 1 / -1; justify-self: start; cursor: pointer; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 34px 17px 0; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 2px; color: var(--orange-dark); font-size: 22px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 850px; margin: 0 0 17px; color: var(--muted); }
    .quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .quote { padding: 18px; border: 1px solid var(--line); background: #fffefd; transition: transform .2s, box-shadow .2s; }
    .quote p { margin: 0 0 16px; color: #49443f; font-size: 14px; }
    .quote strong { display: block; font-size: 14px; }
    .quote span { color: var(--muted); font-size: 12px; }
    .reference-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
    .reference-block { border-top: 2px solid var(--orange); padding-top: 14px; }
    .reference-block h3 { margin: 0 0 12px; font-size: 19px; }
    .reference-block ul { margin: 0; padding-left: 19px; color: var(--muted); }
    .reference-block li { margin: 7px 0; }
    .reference-block a { color: #8f3c17; text-decoration-thickness: 1px; text-underline-offset: 3px; }
    .article-links { display: grid; gap: 10px; }
    .article-links a { padding: 11px 0; border-bottom: 1px solid var(--line); color: #514b45; text-decoration: none; }
    .article-links a:hover { color: var(--orange-dark); }
    footer { padding: 30px 0; background: #f0e9e1; color: #332e29; }
    .footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; }
    .footer-inner p { margin: 5px 0; color: #5b534c; font-size: 14px; }
    .footer-links { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #51463c; font-size: 13px; text-decoration: none; }
    .float-contact { position: fixed; right: 16px; bottom: 18px; z-index: 15; display: grid; gap: 8px; }
    .float-contact a { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid #e6b38c; border-radius: 50%; background: #fffdf9; color: var(--orange-dark); box-shadow: 0 5px 16px #34200e1a; text-decoration: none; font-size: 12px; font-weight: 800; }
    .float-contact a:hover { background: #fff0df; }
    .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: 900px) {
      .nav { min-height: 68px; }
      .nav-right { gap: 10px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 12px 20px 16px; border-bottom: 1px solid var(--line); background: #fffdf9; box-shadow: 0 10px 18px #31221312; }
      .nav-links.open { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
      .nav-links a { padding: 10px 8px; }
      .hero-grid { gap: 26px; }
      .capability-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .brand { gap: 7px; font-size: 14px; }
      .ai-page-logo { width: 36px; }
      .nav-cta { min-height: 39px; padding: 8px 11px; font-size: 13px; }
      .hero { padding: 48px 0 34px; }
      .hero-grid, .intro-layout, .showcase-grid, .request-layout, .reference-grid { grid-template-columns: 1fr; }
      .hero-grid { gap: 26px; }
      h1 { font-size: 40px; }
      .hero-copy { font-size: 16px; }
      .hero-visual { padding: 17px; }
      .metrics { grid-template-columns: repeat(2, 1fr); row-gap: 14px; margin-top: 30px; }
      .metric { padding-top: 14px; }
      section.content-section { padding: 48px 0; }
      .section-heading { margin-bottom: 23px; }
      .section-heading h2 { font-size: 27px; }
      .capability-grid { grid-template-columns: 1fr 1fr; gap: 9px; }
      .capability { min-height: 0; padding: 14px; }
      .industry-grid, .steps, .quotes { grid-template-columns: 1fr 1fr; gap: 18px 14px; }
      .wide-feature { grid-template-columns: 1fr; gap: 13px; }
      .footer-inner { flex-direction: column; }
      .footer-links { justify-content: flex-start; }
    }
    @media (max-width: 420px) {
      .capability-grid, .industry-grid, .steps, .quotes { grid-template-columns: 1fr; }
      .model-list { grid-template-columns: repeat(2, 1fr); }
      form { grid-template-columns: 1fr; }
      .field.full, .form-submit { grid-column: auto; }
    }