:root {
      color-scheme: light;
      --ink: #18233a;
      --muted: #64718a;
      --line: #dce4f0;
      --paper: #f6f8fc;
      --white: #fff;
      --blue: #2458e6;
      --cyan: #19b8ce;
      --pink: #e84a9a;
      --lime: #b7df43;
      --navy: #14203a;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    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;
    }
    img { max-width: 100%; height: auto; }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      background: rgba(255,255,255,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }
    .header-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; text-decoration: none; font-weight: 800; }
    .ai-page-logo { width: 42px; height: 42px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 6px 8px; color: #536079; font-size: 12px; text-decoration: none; transition: color .2s ease; }
    .nav-links a:hover { color: var(--blue); }
    .nav-links .nav-cta { margin-left: 8px; padding: 9px 14px; color: #fff; background: var(--blue); border-radius: 4px; font-weight: 700; }
    .menu-toggle { display: none; border: 1px solid var(--line); border-radius: 4px; background: #fff; padding: 8px 11px; color: var(--ink); }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 62px 0 38px;
      color: #f8fbff;
      background: var(--navy);
      isolation: isolate;
    }
    .hero::before, .hero::after { position: absolute; z-index: -1; content: ""; pointer-events: none; }
    .hero::before {
      inset: 0;
      opacity: .4;
      background-image: linear-gradient(rgba(145,174,255,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(145,174,255,.09) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(to bottom, black, transparent 90%);
    }
    .hero::after {
      width: 360px;
      height: 360px;
      top: -180px;
      right: 8%;
      border: 1px solid rgba(65,211,226,.45);
      border-radius: 50%;
      box-shadow: 0 0 0 34px rgba(65,211,226,.05), 0 0 0 70px rgba(65,211,226,.035);
      animation: orbit 18s linear infinite;
    }
    .hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(270px, .85fr); align-items: center; gap: 48px; }
    .eyebrow { color: #79e0ed; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
    h1 { max-width: 690px; margin: 15px 0 18px; font-size: clamp(38px, 5vw, 60px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 610px; color: #d0d9ec; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 11px 18px; border: 1px solid transparent; border-radius: 4px; text-decoration: none; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(19,48,104,.18); }
    .button-primary { color: #fff; background: var(--blue); }
    .hero .button-primary { color: #14203a; background: var(--lime); }
    .button-outline { color: #f8fbff; border-color: rgba(255,255,255,.38); background: rgba(255,255,255,.04); }
    .hero-visual { position: relative; padding: 24px 0; }
    .signal-panel { position: relative; padding: 24px; border: 1px solid rgba(144,191,255,.34); border-radius: 8px; background: rgba(255,255,255,.065); box-shadow: 0 22px 70px rgba(0,0,0,.18); }
    .signal-panel h2 { margin: 0 0 17px; font-size: 16px; }
    .signal-flow { display: grid; gap: 10px; }
    .signal-step { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; border-left: 3px solid var(--cyan); background: rgba(255,255,255,.07); }
    .signal-step:nth-child(2) { border-color: var(--pink); }
    .signal-step:nth-child(3) { border-color: var(--lime); }
    .signal-step strong { font-size: 14px; }
    .signal-step span { color: #bfcce3; font-size: 12px; text-align: right; }
    .hero-note { margin: 15px 0 0; color: #bec9dd; font-size: 12px; }
    .hero-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 48px; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.14); }
    .hero-metric { padding: 14px 18px; background: #192844; }
    .hero-metric strong { display: block; color: #fff; font-size: 15px; }
    .hero-metric span { color: #bfc9dd; font-size: 12px; }
    .section { padding: 74px 0; }
    .section-tint { background: #edf2fa; border-block: 1px solid #e4eaf3; }
    .section-dark { color: #f7f9ff; background: #182641; }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 32px; }
    .section-heading > div { max-width: 700px; }
    .kicker { margin: 0 0 8px; color: #1a87a0; font-size: 12px; font-weight: 800; letter-spacing: .1em; }
    h2 { margin: 0; font-size: clamp(26px, 3vw, 38px); line-height: 1.25; letter-spacing: 0; }
    .section-intro { max-width: 700px; margin: 12px 0 0; color: var(--muted); }
    .section-dark .section-intro { color: #c3cde0; }
    .text-link { color: var(--blue); font-weight: 750; text-decoration-thickness: 1px; text-underline-offset: 4px; }
    .feature-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
    .feature-copy { padding: 6px 0; }
    .feature-copy p { color: var(--muted); }
    .feature-copy .button { margin-top: 8px; }
    .model-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 23px; }
    .model-list span { padding: 6px 10px; color: #345078; border: 1px solid #d3deee; background: #fff; font-size: 12px; }
    .capability-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 0 24px; }
    .capability { padding: 22px 0; border-top: 1px solid #ccd7e7; }
    .capability b { display: block; margin-bottom: 6px; font-size: 16px; }
    .capability p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; }
    .service-item { min-height: 120px; padding: 18px; border: 1px solid var(--line); background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover { transform: translateY(-3px); box-shadow: 0 12px 24px rgba(24,44,77,.08); }
    .service-item h3 { margin: 0 0 7px; font-size: 15px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-more { margin-top: 20px; color: var(--muted); font-size: 13px; }
    .service-more strong { color: var(--ink); }
    .steps { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; border-top: 1px solid #b8c9df; }
    .step { position: relative; padding: 22px 20px 0 0; }
    .step::before { position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--pink); content: ""; }
    .step-number { color: #16849a; font-size: 12px; font-weight: 800; }
    .step h3 { margin: 8px 0 5px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
    .solution-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; }
    .solution-list p { margin: 0; padding: 12px 0; border-bottom: 1px solid #d9e2ef; color: #3d4b65; font-size: 14px; }
    .solution-list strong { color: var(--ink); }
    .asset-figure { margin: 0; }
    .asset-figure img { display: block; width: 100%; object-fit: contain; }
    .asset-figure figcaption { margin-top: 8px; color: var(--muted); font-size: 12px; }
    .network-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
    .network-row span { padding: 6px 11px; color: #1d3a61; border: 1px solid #b8d9df; background: #effbfc; font-size: 12px; }
    .table-wrap { overflow-x: auto; border: 1px solid #dce4f0; background: #fff; }
    table { width: 100%; min-width: 720px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #e3e9f1; vertical-align: top; }
    thead th { color: #fff; background: #203251; font-size: 13px; }
    tbody th { width: 23%; color: #2e3b54; font-size: 14px; }
    td { color: #536079; font-size: 13px; }
    .rating-band { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 18px; padding: 17px 20px; color: #14203a; background: #e4f4f5; border-left: 4px solid var(--cyan); }
    .rating-band strong { font-size: 18px; }
    .rating-band span { color: #3c556f; font-size: 14px; }
    .needs-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .needs-points { padding: 0; margin: 22px 0 0; list-style: none; }
    .needs-points li { padding: 10px 0; border-top: 1px solid #d8e1ed; color: #4d5c74; }
    .request-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 24px; border: 1px solid #dce4f0; background: #fff; }
    .field { display: grid; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { color: #33415a; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #cbd6e5; border-radius: 3px; color: var(--ink); background: #fff; }
    .field textarea { min-height: 112px; resize: vertical; }
    .request-form .button { grid-column: 1 / -1; justify-self: start; cursor: pointer; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
    details { padding: 16px 0; border-bottom: 1px solid #d7e0ec; }
    summary { cursor: pointer; color: #24334d; font-weight: 750; }
    details p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
    .quotes-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
    .quote { padding: 19px; border-top: 3px solid var(--cyan); background: #fff; }
    .quote:nth-child(2n) { border-color: var(--pink); }
    .quote blockquote { margin: 0 0 14px; color: #3b4961; font-size: 14px; }
    .quote cite { color: #64718a; font-size: 12px; font-style: normal; font-weight: 700; }
    .editorial-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
    .editorial-list { margin: 14px 0 0; padding: 0; list-style: none; }
    .editorial-list li { border-top: 1px solid #d8e1ed; }
    .editorial-list a { display: block; padding: 12px 0; color: #34445e; text-decoration: none; font-size: 14px; }
    .editorial-list a:hover { color: var(--blue); }
    .media-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
    .media-pair img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #e7edf5; }
    .media-square { width: min(210px, 100%); margin-top: 12px; }
    .media-square img { width: 100%; aspect-ratio: 1; object-fit: contain; background: #e7edf5; }
    .contact-row { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
    .contact-info { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
    .contact-info p { padding: 12px 0; margin: 0; border-top: 1px solid #ccd7e7; color: #d3dcec; }
    .contact-info strong { display: block; color: #fff; }
    .qr-image { width: 152px; margin-top: 14px; padding: 6px; background: #fff; }
    .site-footer { padding: 28px 0; color: #d8e0ef; background: #111b30; }
    .footer-row { display: flex; align-items: start; justify-content: space-between; gap: 28px; }
    .site-footer p { margin: 0; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #d8e0ef; font-size: 12px; text-decoration: none; }
    .footer-links a:hover { color: #8ce1ec; }
    .floating-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .floating-contact a { padding: 10px 13px; color: #fff; background: var(--blue); border-radius: 4px; box-shadow: 0 6px 18px rgba(26,52,102,.2); font-size: 12px; font-weight: 750; text-decoration: none; }
    .floating-contact a:last-child { color: var(--ink); background: var(--lime); }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes orbit { to { transform: rotate(360deg); } }
    @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-links a { padding-inline: 6px; font-size: 11px; }
      .nav-links .nav-cta { margin-left: 4px; }
      .hero-grid, .feature-layout, .solution-grid, .needs-layout, .contact-row { grid-template-columns: 1fr; gap: 28px; }
      .hero-grid { gap: 22px; }
      .service-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
      .capability-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .header-row { min-height: 64px; }
      .menu-toggle { display: inline-flex; }
      .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; align-items: stretch; padding: 10px 16px 16px; border-bottom: 1px solid var(--line); background: #fff; }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
      .nav-links a { padding: 9px; font-size: 13px; }
      .nav-links .nav-cta { margin: 4px 0 0; text-align: center; }
      .hero { padding: 45px 0 28px; }
      h1 { font-size: 40px; }
      .hero-copy { font-size: 15px; }
      .hero-strip { grid-template-columns: 1fr 1fr; margin-top: 28px; }
      .hero-metric { padding: 12px; }
      .section { padding: 56px 0; }
      .section-heading { display: block; margin-bottom: 24px; }
      .section-heading > .text-link { display: inline-block; margin-top: 14px; }
      .service-grid { grid-template-columns: 1fr 1fr; }
      .steps { grid-template-columns: 1fr 1fr; row-gap: 24px; }
      .solution-list { grid-template-columns: 1fr; }
      .faq-grid, .quotes-grid, .editorial-grid { grid-template-columns: 1fr; }
      .request-form { grid-template-columns: 1fr; padding: 18px; }
      .field-wide, .request-form .button { grid-column: auto; }
      .contact-info { grid-template-columns: 1fr 1fr; }
      .footer-row { flex-direction: column; }
      .floating-contact { right: 10px; bottom: 12px; }
    }
    @media (max-width: 390px) {
      .service-grid { grid-template-columns: 1fr; }
      .hero-actions .button { width: 100%; }
      .rating-band { align-items: start; flex-direction: column; gap: 4px; }
    }