:root {
      color-scheme: light;
      --ink: #1c2533;
      --muted: #5e6877;
      --line: #e2e7ee;
      --paper: #f7f8fb;
      --white: #fff;
      --blue: #284be8;
      --pink: #e94e82;
      --cyan: #1da8b4;
      --lime: #ddf46d;
      --orange: #f28c45;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .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,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; white-space: nowrap; }
    .brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: var(--blue); color: #fff; font-size: 17px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; list-style: none; padding: 0; margin: 0; }
    .nav-links a { display: block; padding: 10px 9px; color: #384354; font-size: 13px; text-decoration: none; border-radius: 5px; }
    .nav-links a:hover { color: var(--blue); background: #f0f3ff; }
    .nav-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 0;
      border-radius: 5px;
      padding: 12px 18px;
      color: #fff;
      background: var(--blue);
      text-decoration: none;
      font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .nav-cta { flex: 0 0 auto; padding: 10px 15px; font-size: 13px; }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 9px 22px rgba(40,75,232,.2); background: #1738cf; }
    .button-light { background: #fff; color: var(--ink); border: 1px solid var(--line); }
    .button-light:hover { background: #f5f7ff; color: var(--blue); }
    .menu-toggle { display: none; border: 1px solid var(--line); color: var(--ink); background: #fff; border-radius: 5px; width: 42px; height: 42px; font-size: 20px; }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 88px 0 76px;
      color: #172039;
      background: linear-gradient(116deg, #e5edff 0%, #faf9ff 48%, #fff0f5 100%);
      border-bottom: 1px solid #e5e8f2;
    }
    .hero::before {
      content: "";
      position: absolute;
      width: 360px;
      height: 360px;
      right: -115px;
      top: -180px;
      border: 58px solid rgba(40,75,232,.11);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero::after {
      content: "";
      position: absolute;
      width: 210px;
      height: 210px;
      right: 15%;
      bottom: -150px;
      border: 36px solid rgba(233,78,130,.13);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero-layout { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1.1fr) minmax(290px,.7fr); gap: 50px; align-items: center; }
    .eyebrow { margin: 0 0 15px; color: var(--blue); font-weight: 800; font-size: 13px; letter-spacing: 1px; }
    h1 { max-width: 650px; margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 620px; margin: 22px 0 26px; color: #46536a; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-proof { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 28px; color: #4b576a; font-size: 13px; }
    .hero-proof span::before { content: "✓"; margin-right: 7px; color: #168d70; font-weight: 900; }
    .signal-panel { padding: 24px; border: 1px solid rgba(40,75,232,.14); border-radius: 8px; background: rgba(255,255,255,.76); box-shadow: 0 16px 40px rgba(36,48,88,.08); }
    .signal-panel h2 { margin: 0 0 18px; font-size: 17px; }
    .signal-row { display: flex; justify-content: space-between; gap: 18px; padding: 12px 0; border-top: 1px solid #e8eaf2; font-size: 13px; }
    .signal-row strong { color: var(--blue); text-align: right; }
    .signal-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section-white { background: #fff; }
    .section-tint { background: #eef2ff; }
    .section-head { max-width: 740px; margin: 0 0 34px; }
    .section-kicker { margin: 0 0 8px; color: var(--pink); text-transform: uppercase; font-size: 12px; font-weight: 800; letter-spacing: .5px; }
    h2 { margin: 0; font-size: 32px; line-height: 1.25; letter-spacing: 0; }
    .section-head > p:last-child { margin: 13px 0 0; color: var(--muted); }
    .metric-strip { display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--line); background: #fff; }
    .metric { padding: 22px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--blue); font-size: 25px; line-height: 1.2; }
    .metric span { display: block; margin-top: 7px; color: var(--muted); font-size: 13px; }
    .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 46px; align-items: center; }
    .intro-copy p { color: var(--muted); }
    .logo-wrap { width: 180px; margin: 0 0 18px; }
    .ai-page-logo { display: block; max-width: 100%; height: auto; }
    .intro-points { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 20px; padding: 0; margin: 24px 0 0; list-style: none; }
    .intro-points li { padding-left: 18px; position: relative; color: #3c4858; font-size: 14px; }
    .intro-points li::before { content: ""; position: absolute; left: 0; top: .65em; width: 7px; height: 7px; border-radius: 2px; background: var(--pink); }
    .model-band { padding: 22px; border-left: 4px solid var(--cyan); background: #effafb; }
    .model-band strong { display: block; margin-bottom: 8px; }
    .model-band p { margin: 0; color: #4c5c66; font-size: 14px; }
    .capability-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .capability { min-height: 170px; padding: 21px; border: 1px solid var(--line); border-top: 3px solid var(--blue); background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .capability:nth-child(3n+2) { border-top-color: var(--pink); }
    .capability:nth-child(3n) { border-top-color: var(--cyan); }
    .capability:hover, .quote:hover, .case:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(31,45,80,.08); }
    .capability h3 { margin: 0 0 8px; font-size: 17px; }
    .capability p { margin: 0; color: var(--muted); font-size: 13px; }
    .product-list { display: grid; grid-template-columns: repeat(3,1fr); column-gap: 34px; row-gap: 0; }
    .product { padding: 17px 0; border-bottom: 1px solid var(--line); }
    .product h3 { margin: 0 0 5px; font-size: 15px; }
    .product p { margin: 0; color: var(--muted); font-size: 13px; }
    .chips { display: flex; flex-wrap: wrap; gap: 8px; }
    .chip { padding: 7px 11px; border: 1px solid #dce3f2; border-radius: 3px; color: #344052; background: #fff; font-size: 12px; }
    .steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; counter-reset: process; }
    .step { position: relative; padding: 0 22px 0 0; }
    .step::before { counter-increment: process; content: "0" counter(process); display: block; margin-bottom: 13px; color: var(--pink); font-weight: 900; font-size: 24px; }
    .step:not(:last-child)::after { content: ""; position: absolute; top: 15px; right: 18px; width: 36%; height: 1px; background: #cbd4e6; }
    .step h3 { margin: 0 0 7px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-flow { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
    .service-flow img { display: block; width: 100%; height: auto; border-radius: 5px; }
    .flow-copy p { color: var(--muted); }
    .timeline { margin-top: 24px; padding-left: 19px; border-left: 2px solid #c9d4ff; }
    .timeline-item { position: relative; padding: 0 0 19px 12px; }
    .timeline-item:last-child { padding-bottom: 0; }
    .timeline-item::before { content: ""; position: absolute; left: -25px; top: 8px; width: 9px; height: 9px; border-radius: 50%; background: var(--blue); }
    .timeline-item strong { display: block; font-size: 14px; }
    .timeline-item span { color: var(--muted); font-size: 13px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    .comparison { width: 100%; min-width: 700px; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 15px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
    .comparison thead th { color: #fff; background: #22345e; font-size: 13px; }
    .comparison tbody th { width: 22%; font-size: 13px; }
    .comparison td { color: #566171; font-size: 13px; }
    .comparison .highlight { color: #263665; background: #f0f3ff; font-weight: 650; }
    .rating { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin: 0 0 20px; }
    .rating strong { color: var(--blue); font-size: 27px; }
    .stars { color: #ed8a28; letter-spacing: 0; font-size: 19px; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 17px; }
    .case { overflow: hidden; border: 1px solid var(--line); background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .case img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #f3f5f8; }
    .case-copy { padding: 17px; }
    .case-copy h3 { margin: 0 0 7px; font-size: 16px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .quotes { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .quote { padding: 19px; border: 1px solid var(--line); background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .quote blockquote { margin: 0; color: #475365; font-size: 14px; }
    .quote figcaption { margin-top: 15px; color: #26324a; font-size: 12px; font-weight: 750; }
    .quote figcaption span { display: block; color: var(--muted); font-weight: 400; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 42px 17px 0; list-style: none; cursor: pointer; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 5px; top: 13px; color: var(--blue); font-size: 22px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: 0; padding: 0 35px 17px 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; padding: 0; margin: 0; list-style: none; }
    .article-list a { display: flex; justify-content: space-between; gap: 14px; padding: 15px; border: 1px solid var(--line); color: #334055; background: #fff; font-size: 13px; text-decoration: none; }
    .article-list a:hover { border-color: var(--blue); color: var(--blue); }
    .article-list span { flex: 0 0 auto; color: var(--muted); }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 42px; align-items: start; }
    .contact-info { padding: 22px; color: #fff; background: #21325b; }
    .contact-info h3 { margin: 0 0 14px; font-size: 19px; }
    .contact-info p { margin: 9px 0; color: #e3e8f5; font-size: 14px; }
    .contact-info a { color: #fff; }
    .qr-wrap { width: min(190px,100%); margin-top: 17px; padding: 8px; background: #fff; }
    .qr-wrap img { display: block; width: 100%; height: auto; }
    .request-form { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .field { display: grid; gap: 6px; }
    .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 #d5dce6; border-radius: 4px; color: var(--ink); background: #fff; }
    .field textarea { min-height: 120px; resize: vertical; }
    .field-wide { grid-column: 1 / -1; }
    .form-note { grid-column: 1 / -1; margin: -4px 0 0; color: var(--muted); font-size: 12px; }
    .request-form button { justify-self: start; }
    .partner-band { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 24px; border-left: 4px solid var(--orange); background: #fff5ec; }
    .partner-band h3 { margin: 0 0 6px; font-size: 19px; }
    .partner-band p { margin: 0; color: var(--muted); font-size: 14px; }
    .footer { padding: 28px 0; color: #dce3f2; background: #192541; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .footer p { margin: 0; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 7px 17px; }
    .footer a { color: #e8edfb; font-size: 12px; text-decoration: none; }
    .footer a:hover { color: #cce66b; }
    .float-contact { position: fixed; z-index: 12; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .float-contact a, .back-top { display: grid; place-items: center; width: 46px; height: 46px; border: 0; border-radius: 5px; color: #fff; background: var(--blue); text-decoration: none; box-shadow: 0 5px 16px rgba(25,37,65,.2); cursor: pointer; }
    .back-top { display: none; background: #263650; font-size: 18px; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .nav-row { flex-wrap: wrap; padding: 12px 0; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-cta { order: 2; }
      .nav-links { display: none; order: 3; flex: 0 0 100%; justify-content: flex-start; flex-wrap: wrap; padding: 7px 0 2px; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 8px 10px; }
      .hero-layout { gap: 30px; }
    }
    @media (max-width: 720px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 62px 0 50px; }
      .hero-layout, .intro-grid, .service-flow, .contact-grid { grid-template-columns: 1fr; }
      .hero-layout { gap: 30px; }
      .hero-copy { font-size: 15px; }
      .signal-panel { max-width: 460px; }
      .section { padding: 56px 0; }
      h2 { font-size: 27px; }
      .metric-strip { grid-template-columns: 1fr 1fr; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .capability-grid, .product-list, .case-grid, .quotes, .article-list { grid-template-columns: 1fr 1fr; }
      .steps { grid-template-columns: 1fr 1fr; gap: 27px 18px; }
      .step:not(:last-child)::after { display: none; }
      .partner-band { align-items: flex-start; flex-direction: column; }
      .footer-row { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 480px) {
      .nav-cta { padding: 9px 11px; font-size: 12px; }
      .hero-actions .button { width: 100%; }
      .capability-grid, .product-list, .case-grid, .quotes, .article-list, .steps { grid-template-columns: 1fr; }
      .intro-points { grid-template-columns: 1fr; }
      .request-form { grid-template-columns: 1fr; }
      .field-wide, .form-note { grid-column: auto; }
      .metric { padding: 17px 14px; }
      .metric strong { font-size: 22px; }
      .float-contact { right: 10px; bottom: 12px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }