:root {
      color-scheme: light;
      --ink: #182033;
      --muted: #606b7e;
      --line: #e4e8f0;
      --paper: #f7f8fc;
      --white: #fff;
      --blue: #2457e6;
      --cyan: #0e9fa8;
      --coral: #ec694f;
      --lime: #d5ee55;
      --navy: #17233e;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", 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 rgba(228,232,240,.9);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; font-weight: 800; }
    .brand img { width: 36px; height: 36px; object-fit: contain; }
    .brand-name { font-size: 17px; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 12px; color: #475168; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--blue); }
    .nav-actions { display: flex; align-items: center; gap: 9px; flex-shrink: 0; }
    .menu-toggle { display: none; }
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 19px;
      border: 1px solid transparent;
      border-radius: 4px;
      background: var(--blue);
      color: #fff;
      font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
      cursor: pointer;
    }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(36,87,230,.22); }
    .button.secondary { color: var(--ink); background: #fff; border-color: var(--line); }
    .button.lime { color: #192033; background: var(--lime); }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 78px 0 56px;
      background:
        linear-gradient(115deg, rgba(36,87,230,.08), transparent 46%),
        linear-gradient(300deg, rgba(14,159,168,.09), transparent 38%),
        #f7f8fc;
    }
    .hero::before, .hero::after { position: absolute; content: ""; pointer-events: none; }
    .hero::before {
      width: 390px; height: 390px; right: -125px; top: -160px;
      border: 1px solid rgba(36,87,230,.16); border-radius: 50%;
      box-shadow: 0 0 0 38px rgba(36,87,230,.025), 0 0 0 78px rgba(14,159,168,.025);
      animation: orbit 22s linear infinite;
    }
    .hero::after {
      width: 120px; height: 120px; right: 15%; bottom: 28px;
      border: 1px solid rgba(236,105,79,.28); transform: rotate(45deg);
    }
    .hero-content { position: relative; z-index: 1; max-width: 790px; }
    .eyebrow { color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: 1.4px; text-transform: uppercase; }
    h1 { max-width: 730px; margin: 15px 0 17px; font-size: clamp(38px, 6vw, 68px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 650px; margin: 0; color: #59647a; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero-note { margin-top: 18px; color: #687387; font-size: 13px; }
    .hero-note strong { color: var(--ink); }
    .model-strip { position: relative; z-index: 1; margin-top: 56px; padding-top: 19px; border-top: 1px solid #dfe4ed; }
    .model-strip p { margin: 0 0 12px; color: var(--muted); font-size: 12px; }
    .model-list { display: flex; flex-wrap: wrap; gap: 9px 21px; color: #34405a; font-size: 13px; font-weight: 700; }
    .model-list span { white-space: nowrap; }
    .stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; padding: 0 0 38px; }
    .stat { padding: 22px 20px; border-top: 2px solid var(--blue); }
    .stat:nth-child(2) { border-color: var(--cyan); }
    .stat:nth-child(3) { border-color: var(--coral); }
    .stat:nth-child(4) { border-color: #9bb627; }
    .stat strong { display: block; font-size: 18px; }
    .stat span { color: var(--muted); font-size: 13px; }
    .section { padding: 76px 0; }
    .section.soft { background: #eff2f8; }
    .section.dark { background: var(--navy); color: #f4f6fb; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 25px; margin-bottom: 30px; }
    .section-head h2 { margin: 0; font-size: clamp(27px, 4vw, 39px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { max-width: 540px; margin: 0; color: var(--muted); }
    .dark .section-head p { color: #c0c9db; }
    .kicker { display: block; margin-bottom: 10px; color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: 1px; }
    .intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: start; }
    .intro-copy p { margin: 0 0 16px; color: #505c72; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 25px; margin: 0; padding: 0; list-style: none; }
    .capability-list li { padding: 14px 0; border-top: 1px solid var(--line); font-weight: 700; }
    .capability-list li span { display: block; color: var(--muted); font-size: 13px; font-weight: 400; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .service-item { min-height: 160px; padding: 19px; background: #fff; border: 1px solid var(--line); border-radius: 4px; transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease; }
    .service-item:hover { transform: translateY(-4px); border-color: #a8baf6; box-shadow: 0 12px 26px rgba(24,32,51,.07); }
    .service-item .index { color: var(--coral); font-size: 12px; font-weight: 800; }
    .service-item h3 { margin: 10px 0 6px; font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 22px 22px 22px 0; border-top: 1px solid #52617c; }
    .workflow article::before { counter-increment: step; content: "0" counter(step); color: var(--lime); font-size: 13px; font-weight: 800; }
    .workflow h3 { margin: 13px 0 6px; font-size: 17px; }
    .workflow p { max-width: 230px; margin: 0; color: #c0c9db; font-size: 13px; }
    .industry-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .industry-copy p { color: var(--muted); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .tag-cloud span { padding: 9px 12px; border: 1px solid #dce2ed; background: rgba(255,255,255,.72); color: #34405a; font-size: 13px; }
    .service-network { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: #34435e; border: 1px solid #34435e; }
    .network-cell { padding: 23px; background: var(--navy); }
    .network-cell strong { display: block; margin-bottom: 5px; color: var(--lime); }
    .network-cell span { color: #c0c9db; font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .case { overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .case img { display: block; width: 100%; aspect-ratio: 16 / 8; object-fit: cover; background: #e6eaf1; }
    .case-copy { padding: 19px 21px 22px; }
    .case-copy h3 { margin: 0 0 7px; font-size: 18px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .rating-row { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; margin: 0 0 23px; }
    .rating-score { padding: 17px 23px; background: var(--lime); color: #182033; }
    .rating-score strong { font-size: 32px; line-height: 1; }
    .rating-score span { display: block; margin-top: 5px; font-size: 12px; }
    .stars { color: #e8a62c; font-size: 22px; letter-spacing: 0; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 720px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #edf1f8; font-size: 13px; }
    td { color: #49556c; font-size: 13px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .review { padding: 20px; border-top: 2px solid var(--cyan); background: #fff; }
    .review p { margin: 0 0 15px; color: #4e5a70; 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: 26px; align-items: center; padding: 25px 0; border-top: 1px solid #d9e0eb; border-bottom: 1px solid #d9e0eb; }
    .price-note h3 { margin: 0 0 5px; font-size: 18px; }
    .price-note p { margin: 0; color: var(--muted); font-size: 14px; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 18px 28px 18px 0; font-weight: 700; cursor: pointer; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; right: 3px; content: "+"; color: var(--blue); font-size: 20px; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 52px; align-items: start; }
    .contact-copy p { color: #566279; }
    .contact-list { display: grid; gap: 9px; margin-top: 22px; }
    .contact-list a, .contact-list span { color: #34405a; font-size: 14px; }
    .qr-row { display: flex; align-items: center; gap: 18px; margin-top: 22px; }
    .qr-row img { width: 108px; border: 1px solid var(--line); }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #39445a; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 45px; padding: 10px 12px; border: 1px solid #d8deea; border-radius: 3px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 110px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .articles { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-link { display: flex; min-height: 95px; align-items: end; padding: 15px; border-top: 2px solid var(--coral); background: #fff; color: var(--ink); font-weight: 700; font-size: 14px; }
    .article-link:hover { color: var(--blue); }
    .partner-links { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 22px; }
    .partner-links a { color: #49556c; font-size: 13px; text-decoration: underline; text-decoration-color: #c5ccda; text-underline-offset: 4px; }
    .site-footer { padding: 25px 0; background: #e9edf4; color: #34405a; }
    .footer-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; }
    .footer-row p { margin: 0; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 12px; }
    .footer-links a { color: #34405a; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .float-contact a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid #dce2ed; background: #fff; color: var(--blue); box-shadow: 0 6px 18px rgba(24,32,51,.1); font-size: 12px; font-weight: 800; }
    .float-contact a:hover { background: var(--blue); color: #fff; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: none; }
    @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; }
    }
    @media (max-width: 900px) {
      .nav-row { min-height: 66px; }
      .menu-toggle { display: inline-flex; width: 42px; height: 42px; align-items: center; justify-content: center; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; }
      .nav-actions .button { min-height: 42px; padding-inline: 13px; font-size: 13px; }
      .nav-links { display: none; position: absolute; top: 66px; right: 20px; left: 20px; align-items: stretch; padding: 9px; border: 1px solid var(--line); background: #fff; box-shadow: 0 15px 30px rgba(24,32,51,.12); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 11px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .articles { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 650px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 58px 0 40px; }
      .hero-copy { font-size: 15px; }
      .hero::before { right: -245px; }
      .hero::after { right: 7%; bottom: 90px; width: 70px; height: 70px; }
      .model-strip { margin-top: 38px; }
      .stats { grid-template-columns: repeat(2, 1fr); padding-bottom: 15px; }
      .stat { padding: 16px 8px; }
      .section { padding: 55px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 12px; }
      .intro-grid, .industry-layout, .contact-grid { grid-template-columns: 1fr; gap: 28px; }
      .capability-list { gap: 0 15px; }
      .workflow { grid-template-columns: repeat(2, 1fr); gap: 10px 20px; }
      .workflow article { padding-right: 0; }
      .service-network { grid-template-columns: 1fr; }
      .network-cell { padding: 17px; }
      .case-grid { grid-template-columns: 1fr; }
      .reviews { grid-template-columns: 1fr; }
      .faq-list { grid-template-columns: 1fr; }
      .price-note { grid-template-columns: 1fr; gap: 15px; }
      .articles { grid-template-columns: repeat(2, 1fr); }
      .article-link { min-height: 82px; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-row { align-items: flex-start; flex-direction: column; }
      .float-contact { right: 10px; bottom: 12px; }
      .float-contact a { width: 42px; height: 42px; }
    }