:root {
      color-scheme: light;
      --ink: #182033;
      --muted: #5d6679;
      --paper: #f7f8fc;
      --white: #fff;
      --line: #e4e7f0;
      --blue: #3349d3;
      --blue-dark: #2135b5;
      --coral: #fa684f;
      --lime: #d8f35b;
      --violet: #7651e8;
      --teal: #087e76;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      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, input, select, textarea { -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, 248, 252, .94);
      border-bottom: 1px solid rgba(24, 32, 51, .08);
      backdrop-filter: blur(14px);
    }
    .nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
    .ai-page-logo { display: block; width: 42px; max-width: 100%; height: auto; }
    .brand-name { font-size: 17px; font-weight: 800; letter-spacing: 0; }
    .nav-right { display: flex; align-items: center; gap: 20px; }
    .nav-links { display: flex; align-items: center; gap: 0; list-style: none; padding: 0; margin: 0; }
    .nav-links a { display: block; padding: 10px 11px; color: #414b61; font-size: 13px; font-weight: 650; transition: color .2s ease; }
    .nav-links a:hover { color: var(--blue); }
    .nav-cta, .button {
      display: inline-flex;
      min-height: 44px;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 0 19px;
      color: #fff;
      background: var(--blue);
      border: 0;
      border-radius: 6px;
      font-weight: 750;
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
      cursor: pointer;
    }
    .nav-cta:hover, .button:hover { background: var(--blue-dark); box-shadow: 0 8px 22px rgba(51, 73, 211, .2); transform: translateY(-2px); }
    .button.secondary { color: var(--ink); background: #fff; border: 1px solid var(--line); }
    .button.secondary:hover { color: var(--blue); background: #fff; }
    .menu-toggle { display: none; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); cursor: pointer; }
    .menu-toggle span { display: block; height: 2px; margin: 4px 0; background: currentColor; }
    .hero {
      position: relative;
      overflow: hidden;
      color: var(--ink);
      background:
        linear-gradient(120deg, rgba(216, 243, 91, .25), transparent 38%),
        linear-gradient(300deg, rgba(250, 104, 79, .12), transparent 35%),
        #f4f5fb;
      border-bottom: 1px solid #e5e7f0;
    }
    .hero::before {
      position: absolute;
      right: max(calc((100vw - var(--container)) / 2), 24px);
      top: 74px;
      width: 136px;
      height: 136px;
      border: 1px solid rgba(51, 73, 211, .22);
      border-radius: 50%;
      box-shadow: 0 0 0 22px rgba(51, 73, 211, .035), 0 0 0 46px rgba(51, 73, 211, .025);
      content: "";
      animation: orbit 12s linear infinite;
    }
    .hero-inner { position: relative; padding-top: 75px; padding-bottom: 48px; }
    .hero-copy { max-width: 770px; padding: 14px 0 48px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    .eyebrow::before { width: 22px; height: 3px; background: var(--coral); content: ""; }
    h1 { max-width: 760px; margin: 19px 0 18px; font-size: clamp(40px, 6vw, 68px); line-height: 1.08; letter-spacing: 0; }
    .hero-copy p { max-width: 670px; margin: 0; color: #4f586b; font-size: 17px; }
    .hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero-actions .button { min-height: 52px; padding-inline: 23px; }
    .hero-note { margin-top: 14px !important; font-size: 12px !important; color: #697286 !important; }
    .hero-strip { display: grid; grid-template-columns: repeat(4, 1fr); align-items: stretch; border-top: 1px solid rgba(24, 32, 51, .13); }
    .metric { padding: 19px 21px 8px 0; }
    .metric + .metric { padding-left: 22px; border-left: 1px solid rgba(24, 32, 51, .13); }
    .metric strong { display: block; font-size: 19px; line-height: 1.35; }
    .metric span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section.tint { background: #eef0fa; }
    .section.dark-band { color: #fff; background: #192139; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 25px; margin-bottom: 31px; }
    .section-head > div { max-width: 670px; }
    .kicker { margin: 0 0 8px; color: var(--coral); font-size: 12px; font-weight: 850; letter-spacing: 0; }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 39px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { margin: 10px 0 0; color: var(--muted); }
    .dark-band .section-head p { color: #c5cbd9; }
    .text-link { color: var(--blue); font-size: 14px; font-weight: 750; white-space: nowrap; }
    .about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: start; }
    .about-copy { max-width: 690px; color: #4f586b; }
    .about-copy p { margin: 0 0 16px; }
    .about-copy strong { color: var(--ink); }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 25px; }
    .model-cloud span { padding: 6px 10px; color: #29334d; background: #fff; border: 1px solid #e2e5ee; border-radius: 3px; font-size: 12px; }
    .capability-list { border-top: 1px solid #dfe2ec; }
    .capability-item { display: grid; grid-template-columns: 35px 1fr; gap: 13px; padding: 15px 0; border-bottom: 1px solid #dfe2ec; }
    .capability-item b { color: var(--coral); font-size: 13px; }
    .capability-item strong { display: block; font-size: 15px; }
    .capability-item span { display: block; margin-top: 2px; color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
    .service-card { min-height: 190px; padding: 22px; background: #fff; border: 1px solid #e6e8ef; border-top: 3px solid var(--blue); transition: transform .22s ease, box-shadow .22s ease; }
    .service-card:nth-child(3n+2) { border-top-color: var(--coral); }
    .service-card:nth-child(3n) { border-top-color: var(--teal); }
    .service-card:hover { transform: translateY(-4px); box-shadow: 0 14px 28px rgba(27, 38, 72, .09); }
    .service-card h3 { margin: 0 0 8px; font-size: 17px; }
    .service-card p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-card .tagline { display: block; margin-top: 15px; color: var(--blue); font-size: 11px; font-weight: 800; }
    .production-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
    .production-copy p { color: var(--muted); }
    .production-copy ul { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; padding: 0; margin: 22px 0 0; list-style: none; }
    .production-copy li { display: flex; gap: 9px; align-items: start; font-size: 14px; }
    .production-copy li::before { flex: 0 0 auto; width: 7px; height: 7px; margin-top: 8px; background: var(--coral); content: ""; }
    .asset-stack { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .asset-stack figure { margin: 0; overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .asset-stack figure:first-child { grid-column: 1 / -1; }
    .asset-stack img { display: block; width: 100%; height: auto; }
    .asset-stack figcaption { padding: 9px 12px; color: #465068; font-size: 12px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 0 23px 0 0; }
    .workflow article::before { display: grid; width: 42px; height: 42px; place-items: center; margin-bottom: 17px; color: #fff; background: var(--blue); border-radius: 50%; counter-increment: step; content: counter(step, decimal-leading-zero); font-size: 12px; font-weight: 800; }
    .workflow article:not(:last-child)::after { position: absolute; top: 21px; left: 52px; right: 22px; height: 1px; background: #cfd4e5; content: ""; }
    .workflow h3 { margin: 0 0 7px; font-size: 16px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid #dfe2ec; border-left: 1px solid #dfe2ec; }
    .industry-grid div { min-height: 104px; padding: 18px; background: rgba(255,255,255,.62); border-right: 1px solid #dfe2ec; border-bottom: 1px solid #dfe2ec; }
    .industry-grid strong { display: block; font-size: 14px; }
    .industry-grid span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
    .network-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
    .network-copy p { color: var(--muted); }
    .network-points { display: grid; gap: 11px; margin-top: 20px; }
    .network-points div { display: flex; gap: 10px; align-items: baseline; color: #444e62; font-size: 14px; }
    .network-points b { color: var(--teal); }
    .network-visual { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: #dce1ec; border: 1px solid #dce1ec; }
    .network-visual div { min-height: 108px; padding: 19px; background: #fff; }
    .network-visual strong { display: block; color: var(--blue); font-size: 17px; }
    .network-visual span { color: var(--muted); font-size: 12px; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .case-card { overflow: hidden; background: #fff; border: 1px solid #e4e7ef; }
    .case-card img { display: block; width: 100%; height: auto; }
    .case-card .case-info { padding: 17px; }
    .case-card h3 { margin: 0 0 5px; font-size: 16px; }
    .case-card p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .review { padding: 20px; background: #fff; border: 1px solid #e5e7ef; }
    .review blockquote { margin: 0; color: #434d60; font-size: 14px; }
    .review footer { margin-top: 17px; color: var(--ink); font-size: 12px; font-weight: 750; }
    .review footer span { display: block; color: var(--muted); font-weight: 500; }
    .comparison { overflow-x: auto; background: #fff; border: 1px solid #dfe3ed; }
    table { width: 100%; min-width: 700px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #e8eaf0; vertical-align: top; font-size: 13px; }
    th { color: #fff; background: #29324e; font-weight: 750; }
    th:nth-child(2) { background: var(--blue); }
    tbody tr:last-child td { border-bottom: 0; }
    tbody td:first-child { width: 22%; color: #29324e; font-weight: 750; }
    tbody td:nth-child(2) { color: #263bbd; font-weight: 700; }
    .rating-line { display: flex; flex-wrap: wrap; align-items: center; gap: 15px; margin: 0 0 18px; }
    .rating-score { color: var(--blue); font-size: 28px; font-weight: 850; }
    .stars { color: #db7620; letter-spacing: 2px; font-size: 18px; }
    .rating-line span:last-child { color: var(--muted); font-size: 13px; }
    .compare-note { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
    .token-row { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 35px; padding: 28px; background: #fff; border-left: 4px solid var(--coral); }
    .token-row h3 { margin: 0 0 7px; font-size: 20px; }
    .token-row p { margin: 0; color: var(--muted); font-size: 14px; }
    .token-caveat { padding: 14px 17px; color: #3d485f; background: #f1f3fa; font-size: 12px; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 32px; border-top: 1px solid #dce0eb; }
    details { padding: 16px 0; border-bottom: 1px solid #dce0eb; }
    summary { position: relative; padding-right: 30px; font-size: 14px; font-weight: 750; cursor: pointer; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; right: 2px; top: -1px; color: var(--blue); content: "+"; font-size: 21px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { margin: 10px 0 0; color: var(--muted); font-size: 13px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-link { display: flex; min-height: 96px; flex-direction: column; justify-content: space-between; padding: 15px; background: #fff; border: 1px solid #e4e7ef; transition: border-color .2s ease, transform .2s ease; }
    .article-link:hover { border-color: var(--blue); transform: translateY(-3px); }
    .article-link strong { font-size: 13px; }
    .article-link span { color: var(--blue); font-size: 11px; }
    .contact-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 45px; align-items: start; }
    .contact-copy p { color: #c6ccda; }
    .contact-details { display: grid; gap: 10px; margin-top: 22px; color: #eef0f7; font-size: 14px; }
    .contact-details a { color: #d8f35b; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; padding: 23px; color: var(--ink); background: #fff; }
    .contact-form label { display: grid; gap: 6px; font-size: 12px; font-weight: 750; }
    .contact-form label.full { grid-column: 1 / -1; }
    .contact-form input, .contact-form select, .contact-form textarea { width: 100%; min-width: 0; padding: 11px 12px; color: var(--ink); background: #fff; border: 1px solid #dfe3ec; border-radius: 3px; outline: none; }
    .contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(51,73,211,.1); }
    .contact-form textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { grid-column: 1 / -1; justify-self: start; }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding: 26px 0 0; }
    .join-band h3 { margin: 0; font-size: 18px; }
    .join-band p { margin: 4px 0 0; color: #c6ccda; font-size: 13px; }
    .site-footer { padding: 28px 0; color: #344056; background: #eef0f6; border-top: 1px solid #dfe2ea; }
    .footer-main { display: flex; justify-content: space-between; gap: 30px; align-items: start; }
    .footer-brand strong { display: block; font-size: 15px; }
    .footer-brand span { color: #5b6578; font-size: 12px; }
    .footer-links { display: flex; max-width: 650px; flex-wrap: wrap; gap: 8px 17px; justify-content: flex-end; }
    .footer-links a { color: #46526b; font-size: 12px; }
    .footer-links a:hover { color: var(--blue); }
    .copyright { margin-top: 20px; padding-top: 14px; color: #667084; border-top: 1px solid #dce0e8; font-size: 11px; }
    .floating-tools { position: fixed; right: 18px; bottom: 22px; z-index: 15; display: grid; gap: 8px; }
    .floating-tools a, .floating-tools button { display: grid; width: 46px; height: 46px; place-items: center; color: #fff; background: var(--blue); border: 0; border-radius: 5px; box-shadow: 0 5px 16px rgba(24,32,51,.18); cursor: pointer; font-size: 19px; }
    .floating-tools .back-top { display: none; color: var(--ink); background: var(--lime); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: none; }
    @keyframes orbit { to { transform: rotate(360deg); } }
    @media (max-width: 1020px) {
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-right { gap: 10px; }
      .nav-cta { padding-inline: 13px; font-size: 12px; }
      .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-wrap { min-height: 66px; }
      .menu-toggle { display: block; }
      .nav-right { gap: 9px; }
      .nav-links { display: none; position: absolute; top: 65px; left: 0; right: 0; padding: 10px 16px 14px; background: var(--paper); border-bottom: 1px solid var(--line); }
      .nav-links.open { display: grid; grid-template-columns: 1fr 1fr; }
      .nav-links a { padding: 10px; font-size: 13px; }
      .nav-cta { min-height: 40px; }
      .hero-inner { padding-top: 49px; padding-bottom: 34px; }
      .hero::before { right: 31px; top: 47px; width: 78px; height: 78px; box-shadow: 0 0 0 14px rgba(51,73,211,.035), 0 0 0 29px rgba(51,73,211,.025); }
      .hero-copy { padding: 14px 0 33px; }
      h1 { max-width: 600px; font-size: 43px; }
      .hero-copy p { max-width: 540px; font-size: 15px; }
      .hero-strip { grid-template-columns: 1fr 1fr; }
      .metric { padding: 14px 10px 12px 0; }
      .metric + .metric { padding-left: 13px; }
      .metric:nth-child(3) { border-left: 0; padding-left: 0; }
      .metric:nth-child(n+3) { border-top: 1px solid rgba(24,32,51,.13); }
      .section { padding: 57px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 13px; margin-bottom: 24px; }
      .about-grid, .production-grid, .network-layout, .contact-layout { grid-template-columns: 1fr; gap: 27px; }
      .workflow { grid-template-columns: 1fr 1fr; gap: 25px 12px; }
      .workflow article:not(:last-child)::after { display: none; }
      .industry-grid { grid-template-columns: repeat(2, 1fr); }
      .case-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .faq-grid { grid-template-columns: 1fr; }
      .token-row { grid-template-columns: 1fr; gap: 17px; padding: 21px; }
      .contact-form { padding: 18px; }
      .join-band { align-items: start; flex-direction: column; }
      .footer-main { flex-direction: column; }
      .footer-links { justify-content: flex-start; }
    }
    @media (max-width: 480px) {
      .brand-name { font-size: 15px; }
      .ai-page-logo { width: 36px; }
      .nav-cta { padding-inline: 10px; font-size: 11px; }
      h1 { font-size: 38px; }
      .hero-actions { align-items: stretch; flex-direction: column; max-width: 300px; }
      .hero-actions .button { width: 100%; }
      .service-grid, .case-grid, .review-grid { grid-template-columns: 1fr; }
      .service-card { min-height: 0; }
      .production-copy ul { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .contact-form { grid-template-columns: 1fr; }
      .contact-form label.full, .contact-form .button { grid-column: 1; }
      .floating-tools { right: 10px; bottom: 12px; }
      .floating-tools a, .floating-tools button { width: 42px; height: 42px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }