:root {
      color-scheme: light;
      --ink: #211c2e;
      --muted: #6e6878;
      --paper: #f8f7fb;
      --white: #fff;
      --line: #e8e3ed;
      --purple: #6d36c7;
      --purple-dark: #4b2198;
      --pink: #df4e9b;
      --lime: #d9f26b;
      --teal: #237e79;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, 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(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .nav-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; flex: 0 0 auto; }
    .ai-page-logo { width: 40px; height: 40px; object-fit: contain; }
    .brand-name { font-size: 17px; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; color: #514a5d; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--purple); }
    .nav-action, .button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 44px; padding: 0 18px; border: 0; border-radius: 5px; color: #fff; background: var(--purple); font-weight: 700; cursor: pointer; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .nav-action:hover, .button:hover { transform: translateY(-2px); background: var(--purple-dark); box-shadow: 0 8px 22px rgba(82,40,148,.2); }
    .button-light { color: var(--ink); background: #fff; border: 1px solid rgba(255,255,255,.55); }
    .button-light:hover { color: var(--purple-dark); background: #f3edf9; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); cursor: pointer; }
    .hero { position: relative; overflow: hidden; color: #fff; background: #2b1744; }
    .hero::before { position: absolute; inset: 0; content: ""; background: linear-gradient(115deg, #351954 0%, #642f9b 55%, #a63f91 100%); }
    .hero::after { position: absolute; inset: 0; content: ""; opacity: .17; background-image: linear-gradient(rgba(255,255,255,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(90deg, #000, transparent 85%); }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: 56px; padding-top: 82px; padding-bottom: 72px; }
    .hero-copy { max-width: 680px; }
    .eyebrow { margin: 0 0 16px; color: var(--lime); font-size: 13px; font-weight: 800; letter-spacing: 1.5px; }
    h1 { max-width: 650px; margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    .hero-lead { max-width: 610px; margin: 22px 0 26px; color: #eee5f4; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-footnote { margin: 17px 0 0; color: #ded2e8; font-size: 13px; }
    .hero-art { min-height: 320px; display: grid; place-items: center; }
    .orbit-panel { width: min(100%, 410px); padding: 24px; border: 1px solid rgba(255,255,255,.3); border-radius: 12px; background: rgba(255,255,255,.09); box-shadow: 0 28px 70px rgba(20,8,38,.25); animation: float-in 6s ease-in-out infinite; }
    .orbit-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.22); }
    .orbit-top strong { font-size: 14px; }
    .live-mark { width: 9px; height: 9px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 5px rgba(217,242,107,.13); }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 9px; padding: 19px 0 14px; }
    .model-cloud span { padding: 6px 10px; border: 1px solid rgba(255,255,255,.25); border-radius: 4px; color: #fff; font-size: 12px; }
    .orbit-bottom { display: flex; justify-content: space-between; gap: 12px; color: #e8ddef; font-size: 12px; }
    .signal-bar { height: 7px; margin-top: 17px; overflow: hidden; border-radius: 9px; background: rgba(255,255,255,.16); }
    .signal-bar span { display: block; width: 72%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--lime), #ffb4da); animation: signal 3.5s ease-in-out infinite alternate; }
    .metric-band { position: relative; z-index: 2; margin-top: -1px; color: var(--ink); background: #fff; border-bottom: 1px solid var(--line); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding-top: 24px; padding-bottom: 24px; }
    .metric { padding-left: 18px; border-left: 3px solid var(--pink); }
    .metric strong { display: block; font-size: 18px; }
    .metric span { color: var(--muted); font-size: 12px; }
    main { overflow: hidden; }
    .section { padding: 76px 0; }
    .section-tint { background: #f0ebf6; }
    .section-white { background: #fff; }
    .section-heading { max-width: 720px; margin-bottom: 30px; }
    .kicker { margin: 0 0 8px; color: var(--purple); font-size: 12px; font-weight: 800; letter-spacing: 1.4px; }
    h2 { margin: 0; font-size: 32px; line-height: 1.25; letter-spacing: 0; }
    .section-heading > p:last-child { margin: 12px 0 0; color: var(--muted); }
    .intro-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 48px; align-items: start; }
    .intro-copy { color: #514a5d; }
    .intro-copy p { margin: 0 0 14px; }
    .text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 8px; color: var(--purple-dark); font-weight: 800; }
    .capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .capability { min-height: 114px; padding: 17px; border-top: 2px solid var(--purple); background: #fff; }
    .capability strong { display: block; margin-bottom: 5px; font-size: 15px; }
    .capability span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .service { min-height: 170px; padding: 19px; border: 1px solid var(--line); background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .service:hover { transform: translateY(-4px); box-shadow: 0 14px 28px rgba(40,24,56,.09); }
    .service-index { display: inline-block; margin-bottom: 17px; color: var(--pink); font-size: 12px; font-weight: 800; }
    .service h3 { margin: 0 0 7px; font-size: 17px; }
    .service p { margin: 0; color: var(--muted); font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .step { position: relative; padding: 0 22px 0 0; }
    .step::before { counter-increment: step; content: "0" counter(step); display: inline-grid; place-items: center; width: 44px; height: 44px; margin-bottom: 15px; border-radius: 50%; color: #fff; background: var(--purple); font-size: 13px; font-weight: 800; }
    .step:not(:last-child)::after { position: absolute; top: 21px; left: 53px; right: 22px; height: 1px; content: ""; background: #c9bad8; }
    .step h3 { margin: 0 0 6px; font-size: 16px; }
    .step p { max-width: 230px; margin: 0; color: var(--muted); font-size: 13px; }
    .solution-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; padding: 28px 0; border-top: 1px solid var(--line); }
    .solution-strip:first-of-type { border-top: 0; padding-top: 0; }
    .solution-strip h3 { margin: 0 0 8px; font-size: 20px; }
    .solution-strip p { margin: 0; color: var(--muted); }
    .tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag-list span { padding: 7px 11px; border: 1px solid #ddd4e8; color: #514760; background: #fff; font-size: 12px; }
    .asset-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .asset { margin: 0; }
    .asset img { display: block; width: 100%; aspect-ratio: 16 / 8; object-fit: cover; }
    .asset figcaption { padding: 10px 0; color: var(--muted); font-size: 13px; }
    .case-aside { display: grid; grid-template-columns: 1fr .75fr; gap: 22px; align-items: center; margin-top: 28px; padding: 24px; background: #f2edf7; }
    .case-aside img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; }
    .case-aside h3 { margin: 0 0 8px; font-size: 20px; }
    .case-aside p { margin: 0; color: var(--muted); }
    .review-score { display: flex; flex-wrap: wrap; align-items: baseline; gap: 14px; margin-bottom: 22px; }
    .review-score strong { color: var(--purple-dark); font-size: 42px; line-height: 1; }
    .stars { color: #d18024; letter-spacing: 0; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 700px; border-collapse: collapse; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    th { color: #fff; background: #4a2b67; font-size: 13px; }
    td { color: #4e4857; font-size: 13px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    tr:last-child td { border-bottom: 0; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 19px; border-left: 3px solid var(--pink); background: #fff; }
    .review p { margin: 0 0 15px; color: #514a5d; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .price-note { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 22px 0; border-block: 1px solid var(--line); }
    .price-note p { margin: 0; color: var(--muted); }
    .price-label { color: var(--teal); font-weight: 800; white-space: nowrap; }
    .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 { position: absolute; right: 4px; top: 14px; content: "+"; color: var(--purple); font-size: 22px; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 850px; margin: 0; padding: 0 28px 18px 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-link { display: flex; min-height: 86px; align-items: center; justify-content: space-between; gap: 12px; padding: 15px; border: 1px solid var(--line); background: #fff; font-weight: 700; font-size: 13px; transition: border-color .2s ease, transform .2s ease; }
    .article-link:hover { transform: translateY(-2px); border-color: var(--purple); }
    .article-link span:last-child { color: var(--pink); font-size: 18px; }
    .form-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 48px; align-items: start; }
    .contact-copy { color: var(--muted); }
    .contact-copy p { margin: 0 0 12px; }
    .contact-line { color: var(--ink); font-weight: 700; }
    .request-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 24px; background: #fff; border: 1px solid var(--line); }
    .field { display: grid; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #dcd6e2; border-radius: 3px; color: var(--ink); background: #fff; }
    .field textarea { min-height: 110px; resize: vertical; }
    .form-hint { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 12px; }
    .request-form .button { justify-self: start; }
    .network { display: flex; flex-wrap: wrap; gap: 9px; }
    .network a { padding: 8px 11px; border: 1px solid #d9d1e1; color: #514760; background: #fff; font-size: 13px; transition: color .2s ease, border-color .2s ease; }
    .network a:hover { color: var(--purple); border-color: var(--purple); }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 26px 0; border-top: 1px solid var(--line); }
    .join-band h3 { margin: 0 0 4px; font-size: 20px; }
    .join-band p { margin: 0; color: var(--muted); }
    .site-footer { color: #352c40; background: #ece8f1; border-top: 1px solid #ddd6e5; }
    .footer-main { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding-top: 30px; padding-bottom: 22px; }
    .footer-main p { margin: 0 0 8px; color: #625a6b; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; align-content: start; gap: 8px 16px; }
    .footer-links a { color: #514760; font-size: 13px; }
    .footer-links a:hover { color: var(--purple); }
    .copyright { padding: 13px 0 18px; border-top: 1px solid #d9d2e0; color: #625a6b; font-size: 12px; }
    .floating-tools { position: fixed; right: 16px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .floating-tools a, .floating-tools button { display: grid; place-items: center; min-width: 48px; min-height: 46px; padding: 0 10px; border: 0; border-radius: 4px; color: #fff; background: #4b2a69; box-shadow: 0 5px 18px rgba(35,22,49,.2); font-size: 12px; cursor: pointer; }
    .floating-tools button { font-size: 17px; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes float-in { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
    @keyframes signal { from { width: 48%; } to { width: 83%; } }
    @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: 980px) {
      .nav-row { gap: 12px; }
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-action { padding-inline: 12px; font-size: 13px; }
      .hero-inner { gap: 28px; }
      .service-grid { grid-template-columns: repeat(3, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 66px; flex-wrap: wrap; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-action { min-height: 40px; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; padding: 0 0 12px; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 8px 10px 8px 0; font-size: 13px; }
      .hero-inner { grid-template-columns: 1fr; padding-top: 64px; padding-bottom: 48px; }
      .hero-art { min-height: 0; }
      .orbit-panel { max-width: 480px; }
      .metrics { grid-template-columns: repeat(2, 1fr); }
      .section { padding: 56px 0; }
      .intro-layout, .form-layout { grid-template-columns: 1fr; gap: 26px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); gap: 26px 12px; }
      .step:not(:last-child)::after { display: none; }
      .reviews { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(2, 1fr); }
      .case-aside { grid-template-columns: 1fr .7fr; }
      .footer-main { grid-template-columns: 1fr; gap: 16px; }
      .footer-links { justify-content: flex-start; }
    }
    @media (max-width: 480px) {
      h1 { font-size: 38px; }
      h2 { font-size: 27px; }
      .brand-name { font-size: 15px; }
      .ai-page-logo { width: 34px; height: 34px; }
      .nav-action { padding-inline: 10px; font-size: 12px; }
      .hero-lead { font-size: 15px; }
      .metrics { gap: 14px 10px; }
      .metric { padding-left: 11px; }
      .capability-grid, .service-grid, .reviews { grid-template-columns: 1fr 1fr; gap: 9px; }
      .capability { min-height: 125px; padding: 13px; }
      .service { min-height: 176px; padding: 15px; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .solution-strip { grid-template-columns: 1fr; gap: 14px; }
      .asset-grid { grid-template-columns: 1fr; gap: 10px; }
      .case-aside { grid-template-columns: 1fr; }
      .case-aside img { max-width: 230px; }
      .article-list { grid-template-columns: 1fr; }
      .price-note { grid-template-columns: 1fr; gap: 8px; }
      .request-form { grid-template-columns: 1fr; padding: 17px; }
      .field-wide, .form-hint { grid-column: auto; }
      .join-band { align-items: flex-start; flex-direction: column; }
      .floating-tools { right: 8px; bottom: 10px; }
    }