:root {
      color-scheme: light;
      --ink: #172331;
      --muted: #566575;
      --line: #dce6ed;
      --paper: #f7fbff;
      --white: #fff;
      --blue: #1769e0;
      --cyan: #00a9a3;
      --orange: #ef773f;
      --lime: #c9e85a;
      --navy: #102f49;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 92px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "PingFang 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: 30;
      background: rgba(255,255,255,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; font-weight: 800; }
    .brand img { display: block; width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-size: 18px; line-height: 1.2; }
    .brand-name small { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; font-weight: 600; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 11px; color: #36495a; font-size: 13px; font-weight: 650; border-radius: 5px; transition: color .2s, background .2s; }
    .nav-links a:hover { background: #edf5ff; color: var(--blue); }
    .nav-cta { margin-left: 8px; padding: 10px 16px !important; background: var(--blue); color: #fff !important; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 5px; cursor: pointer; }
    .hero {
      position: relative; overflow: hidden; color: var(--ink);
      background: linear-gradient(115deg, #e7f8fb 0%, #f5f9ff 51%, #fff4e9 100%);
      border-bottom: 1px solid #d9e7eb;
    }
    .hero::before {
      content: ""; position: absolute; width: 420px; height: 420px; right: -130px; top: -175px;
      border: 1px solid rgba(23,105,224,.16); border-radius: 50%;
      box-shadow: 0 0 0 35px rgba(23,105,224,.035), 0 0 0 72px rgba(0,169,163,.035);
      pointer-events: none;
    }
    .hero-inner { position: relative; padding: 66px 0 50px; }
    .hero-copy { max-width: 790px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: #206e80; font-weight: 750; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--orange); }
    h1 { max-width: 760px; margin: 15px 0 14px; font-size: clamp(38px, 5vw, 62px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy p { max-width: 690px; margin: 0; color: #405568; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
    .button { display: inline-flex; justify-content: center; align-items: center; min-height: 46px; padding: 11px 18px; border: 1px solid transparent; border-radius: 5px; font-size: 14px; font-weight: 750; transition: transform .2s, box-shadow .2s, background .2s; cursor: pointer; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(23,67,105,.16); }
    .button-primary { background: var(--blue); color: #fff; }
    .button-secondary { border-color: #b9cbd6; background: rgba(255,255,255,.74); color: var(--ink); }
    .hero-foot { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 30px; color: #435765; font-size: 13px; }
    .hero-foot span::before { content: "✓"; display: inline-grid; place-items: center; width: 18px; height: 18px; margin-right: 7px; border-radius: 50%; background: #d4f0e9; color: #08796c; font-size: 11px; font-weight: 900; }
    .quick-strip { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid #d6e5ea; background: rgba(255,255,255,.86); }
    .quick-stat { padding: 16px 20px; border-right: 1px solid #dce7eb; }
    .quick-stat:last-child { border-right: 0; }
    .quick-stat strong { display: block; color: var(--navy); font-size: 15px; }
    .quick-stat span { color: var(--muted); font-size: 12px; }
    .section { padding: 68px 0; }
    .section-band { background: #eff7f9; border-block: 1px solid #dce9ec; }
    .section-dark { background: var(--navy); color: #fff; }
    .section-heading { display: flex; justify-content: space-between; align-items: end; gap: 26px; margin-bottom: 27px; }
    .section-heading > div { max-width: 720px; }
    .section-kicker { display: block; margin-bottom: 7px; color: #168b92; font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
    .section-dark .section-kicker { color: #83ddd1; }
    h2 { margin: 0; font-size: 30px; line-height: 1.25; letter-spacing: 0; }
    .section-heading p { max-width: 460px; margin: 0; color: var(--muted); font-size: 14px; }
    .section-dark .section-heading p { color: #d2e0e9; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 46px; align-items: start; }
    .intro-copy p { margin: 0 0 15px; color: #435363; }
    .intro-note { padding: 18px 20px; border-left: 3px solid var(--orange); background: #fff; color: #344b5a; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 22px; }
    .capability-list div { padding: 13px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; margin-bottom: 3px; font-size: 14px; }
    .capability-list span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
    .service-item { min-width: 0; padding: 21px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.55); transition: background .2s, transform .2s; }
    .service-item:hover { position: relative; z-index: 1; transform: translateY(-3px); background: #fff; }
    .service-item h3 { margin: 0 0 7px; font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-item .service-tag { display: inline-block; margin-bottom: 11px; color: #087e83; font-size: 10px; font-weight: 800; letter-spacing: .08em; }
    .workflow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 0 18px 0 0; }
    .workflow article::before { counter-increment: step; content: "0" counter(step); display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 15px; border: 1px solid #8cc9c6; border-radius: 50%; color: #087f83; font-size: 12px; font-weight: 800; }
    .workflow article:not(:last-child)::after { content: ""; position: absolute; left: 50px; top: 21px; width: calc(100% - 68px); border-top: 1px dashed #aac8cc; }
    .workflow h3 { margin: 0 0 5px; font-size: 15px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 12px; }
    .usecase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .usecase { min-height: 150px; padding: 19px; border-top: 3px solid var(--cyan); background: #fff; }
    .usecase:nth-child(3n+2) { border-color: var(--orange); }
    .usecase:nth-child(3n) { border-color: var(--blue); }
    .usecase h3 { margin: 0 0 7px; font-size: 16px; }
    .usecase p { margin: 0; color: var(--muted); font-size: 13px; }
    .network-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; }
    .network-copy p { color: #d2e0e9; }
    .network-copy .button { margin-top: 8px; }
    .model-tags { display: flex; flex-wrap: wrap; align-content: start; gap: 9px; }
    .model-tags span { padding: 8px 12px; border: 1px solid #537184; color: #f2f8fb; background: #183c56; font-size: 13px; }
    .model-tags span:nth-child(4n) { border-color: #73c8b8; }
    .model-tags span:nth-child(4n+1) { border-color: #eda375; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    .comparison { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 14px 16px; border-bottom: 1px solid #e6edf1; vertical-align: top; font-size: 13px; }
    .comparison th { background: #eaf4f6; color: #234251; font-size: 12px; }
    .comparison tr:last-child td { border-bottom: 0; }
    .score-panel { display: flex; align-items: center; gap: 24px; margin-bottom: 21px; padding: 18px 22px; background: #e4f6f0; border-left: 4px solid #17a78f; }
    .score-number { color: #08796c; font-size: 38px; font-weight: 850; line-height: 1; }
    .stars { color: #db8b1d; letter-spacing: 2px; font-size: 18px; }
    .score-panel p { margin: 3px 0 0; color: #39544c; font-size: 13px; }
    .compare-note { margin: 12px 0 0; color: var(--muted); font-size: 11px; }
    .showcase-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 18px; }
    .showcase-card { display: grid; grid-template-columns: 1fr 1fr; align-items: center; overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .showcase-card img { display: block; width: 100%; height: 100%; max-height: 260px; object-fit: cover; }
    .showcase-copy { padding: 20px; }
    .showcase-copy h3 { margin: 0 0 7px; font-size: 17px; }
    .showcase-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .showcase-side { display: grid; gap: 18px; }
    .showcase-side .showcase-card { grid-template-columns: 120px 1fr; }
    .showcase-side img { height: 100%; min-height: 130px; object-fit: cover; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 18px; border: 1px solid #dce7eb; background: #fff; }
    .review p { margin: 0 0 15px; color: #394c59; font-size: 13px; }
    .review footer { color: #087b7d; font-size: 12px; font-weight: 750; }
    .review footer span { display: block; color: var(--muted); font-size: 11px; font-weight: 500; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); border-block: 1px solid var(--line); }
    .article-list a { padding: 16px 14px; border-right: 1px solid var(--line); color: #315064; font-size: 13px; font-weight: 650; transition: color .2s, background .2s; }
    .article-list a:last-child { border-right: 0; }
    .article-list a:hover { color: var(--blue); background: #edf5ff; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; list-style: none; font-size: 15px; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 5px; top: 12px; color: var(--blue); font-size: 24px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: -3px 0 17px; color: var(--muted); font-size: 13px; }
    .contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .contact-copy p { color: #435363; }
    .contact-details { margin: 20px 0; padding: 0; list-style: none; }
    .contact-details li { padding: 8px 0; border-bottom: 1px solid var(--line); color: #33495a; font-size: 13px; }
    .contact-details strong { display: inline-block; min-width: 92px; color: var(--ink); }
    .qr-wrap { width: 132px; padding: 8px; border: 1px solid var(--line); background: #fff; }
    .qr-wrap img { display: block; width: 100%; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #364d5d; font-size: 12px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #cbd9e1; border-radius: 4px; outline: 0; background: #fff; color: var(--ink); }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(23,105,224,.1); }
    .field textarea { min-height: 116px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .footer { background: #edf4f6; color: #314654; border-top: 1px solid #d8e4e8; }
    .footer-main { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 28px 0 21px; }
    .footer p { margin: 8px 0 0; color: #536572; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; align-content: start; gap: 8px 17px; }
    .footer-links a { color: #3d5967; font-size: 12px; }
    .footer-links a:hover { color: var(--blue); }
    .copyright { padding: 12px 0 17px; border-top: 1px solid #d5e1e5; color: #64737c; font-size: 11px; }
    .floating { position: fixed; z-index: 25; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .floating a { display: grid; place-items: center; width: 46px; height: 46px; border: 1px solid #cfdee5; border-radius: 50%; background: #fff; color: #1769e0; box-shadow: 0 5px 18px rgba(27,57,79,.13); font-size: 11px; font-weight: 800; }
    .floating a:hover { background: #e8f4ff; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @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: 930px) {
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-row { min-height: 66px; }
      .nav-links { display: none; position: absolute; top: 66px; left: 0; right: 0; padding: 10px 20px 16px; border-bottom: 1px solid var(--line); background: #fff; align-items: stretch; flex-direction: column; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 11px 10px; }
      .nav-cta { margin: 5px 0 0; text-align: center; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
      .article-list a:nth-child(3) { border-right: 0; }
      .article-list a:nth-child(n+4) { border-top: 1px solid var(--line); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero-inner { padding: 48px 0 32px; }
      h1 { font-size: 39px; }
      .hero-copy p { font-size: 15px; }
      .quick-strip { grid-template-columns: repeat(2, 1fr); }
      .quick-stat:nth-child(2) { border-right: 0; }
      .quick-stat:nth-child(n+3) { border-top: 1px solid #dce7eb; }
      .section { padding: 48px 0; }
      .section-heading { align-items: start; flex-direction: column; gap: 10px; }
      h2 { font-size: 26px; }
      .intro-grid, .network-layout, .contact-layout { grid-template-columns: 1fr; gap: 24px; }
      .capability-list, .service-grid { grid-template-columns: 1fr 1fr; }
      .service-item { padding: 16px 13px; }
      .workflow { grid-template-columns: 1fr; gap: 20px; }
      .workflow article { display: grid; grid-template-columns: 42px 1fr; column-gap: 13px; padding: 0; }
      .workflow article::before { grid-row: span 2; margin: 0; }
      .workflow article:not(:last-child)::after { left: 20px; top: 48px; width: 0; height: 18px; border-top: 0; border-left: 1px dashed #aac8cc; }
      .workflow h3 { align-self: end; }
      .workflow p { grid-column: 2; }
      .usecase-grid, .review-grid { grid-template-columns: 1fr; }
      .usecase { min-height: 0; }
      .showcase-grid { grid-template-columns: 1fr; }
      .showcase-card { grid-template-columns: 1fr; }
      .showcase-card img { max-height: 220px; aspect-ratio: 16 / 9; }
      .showcase-side .showcase-card { grid-template-columns: 105px 1fr; }
      .showcase-side img { min-height: 112px; aspect-ratio: auto; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .article-list a, .article-list a:nth-child(3) { border-right: 1px solid var(--line); }
      .article-list a:nth-child(2n) { border-right: 0; }
      .article-list a:nth-child(n+3) { border-top: 1px solid var(--line); }
      .contact-form { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-main { grid-template-columns: 1fr; gap: 17px; }
      .footer-links { justify-content: flex-start; }
      .score-panel { align-items: flex-start; gap: 15px; }
    }