:root {
      color-scheme: light;
      --ink: #15243d;
      --muted: #5d6d84;
      --blue: #1459d9;
      --blue-dark: #103b91;
      --cyan: #13a9c8;
      --line: #dce5f2;
      --paper: #f5f8ff;
      --white: #fff;
      --green: #147b63;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a, input, select, textarea { -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(12px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; gap: 10px; font-weight: 800; color: var(--blue-dark); }
    .brand img { display: block; width: 42px; height: auto; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { color: #34445c; font-size: 13px; padding: 9px 10px; border-radius: 5px; transition: color .2s, background .2s; }
    .nav-links a:hover { color: var(--blue); background: #edf3ff; }
    .nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .menu-toggle { display: none; width: 42px; height: 40px; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 5px; cursor: pointer; }
    .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 18px; border: 1px solid transparent; border-radius: 5px;
      font-weight: 700; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s;
    }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(20,89,217,.2); }
    .button-primary { color: #fff; background: var(--blue); }
    .button-primary:hover { background: #0f49ba; }
    .button-outline { color: var(--blue-dark); border-color: #b8cae9; background: #fff; }
    .hero {
      overflow: hidden; position: relative; background: #edf4ff;
      border-bottom: 1px solid #d6e4fa;
    }
    .hero::before {
      content: ""; position: absolute; inset: 0 0 0 auto; width: 42%;
      background: linear-gradient(135deg, transparent 0 48%, rgba(20,89,217,.06) 48% 49%, transparent 49% 59%, rgba(19,169,200,.08) 59% 60%, transparent 60%);
      pointer-events: none;
    }
    .hero-inner { position: relative; padding-block: 68px 46px; }
    .hero-copy { max-width: 760px; }
    .eyebrow { margin: 0 0 13px; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: 1.2px; }
    h1 { max-width: 700px; margin: 0; font-size: clamp(38px, 5vw, 60px); line-height: 1.13; letter-spacing: 0; }
    .hero-lead { max-width: 680px; margin: 20px 0 25px; color: #485c78; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin: 14px 0 0; color: #61728a; font-size: 13px; }
    .hero-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 46px; border-top: 1px solid #cad9ee; }
    .hero-stat { padding: 18px 20px 0 0; }
    .hero-stat strong { display: block; color: var(--blue-dark); font-size: 16px; }
    .hero-stat span { color: var(--muted); font-size: 13px; }
    main section { padding-block: 66px; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 28px; }
    .section-head > div { max-width: 720px; }
    .kicker { margin: 0 0 7px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; }
    h2 { margin: 0; font-size: clamp(26px, 3vw, 36px); line-height: 1.25; letter-spacing: 0; }
    .section-intro { margin: 10px 0 0; color: var(--muted); }
    .about-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: start; }
    .about-copy p { margin: 0 0 14px; color: #465972; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; margin: 22px 0 0; padding: 0; list-style: none; }
    .capability-list li { padding: 11px 0; border-bottom: 1px solid var(--line); color: #32435d; }
    .capability-list li::before { content: "✓"; display: inline-block; margin-right: 9px; color: var(--green); font-weight: 800; }
    .platform-panel { padding: 25px; border-left: 3px solid var(--cyan); background: #eaf4fb; }
    .platform-panel h3 { margin: 0 0 12px; font-size: 19px; }
    .platform-panel p { margin: 0; color: #43576c; }
    .model-line { margin-top: 17px; padding-top: 14px; border-top: 1px solid #c9deeb; color: #36516b; font-size: 13px; }
    .model-line strong { color: var(--blue-dark); }
    .services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { min-height: 150px; padding: 20px; background: #fff; border: 1px solid var(--line); transition: transform .2s, border-color .2s, box-shadow .2s; }
    .service-item:hover { transform: translateY(-3px); border-color: #9cb9e8; box-shadow: 0 12px 24px rgba(31,64,119,.08); }
    .service-item h3 { margin: 0 0 8px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-number { display: block; margin-bottom: 12px; color: var(--cyan); font-size: 12px; font-weight: 800; }
    .workflow { background: #eaf1fc; border-block: 1px solid #d6e2f3; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .step { position: relative; padding: 20px 24px 16px 0; border-top: 2px solid #9db6df; counter-increment: step; }
    .step::before { content: "0" counter(step); display: block; margin: -34px 0 18px; width: fit-content; padding: 2px 8px; background: #eaf1fc; color: var(--blue); font-weight: 800; }
    .step h3 { margin: 0 0 7px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .solution-band { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
    .solution-copy { max-width: 540px; }
    .solution-copy p { color: var(--muted); }
    .solution-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
    .solution-links a, .tag { display: inline-block; padding: 6px 10px; border: 1px solid #d6e1f0; color: #385173; background: #fff; font-size: 13px; }
    .solution-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
    .solution-list li { display: flex; justify-content: space-between; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line); }
    .solution-list strong { font-size: 14px; }
    .solution-list span { color: var(--muted); font-size: 14px; text-align: right; }
    .network { padding-block: 45px; background: #142b51; color: #fff; }
    .network h2 { font-size: 26px; }
    .network p { max-width: 720px; margin: 10px 0 20px; color: #d5e2f4; }
    .network .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .network .tag { border-color: #476080; color: #e4eefc; background: #1c3b6c; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { color: #29466f; background: #eaf2ff; font-size: 13px; }
    td { color: #40516a; font-size: 14px; }
    tbody tr:last-child td { border-bottom: 0; }
    .rating { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; padding: 18px 22px; background: #e9f5f6; border-left: 3px solid var(--cyan); }
    .rating strong { color: var(--blue-dark); font-size: 30px; line-height: 1; }
    .rating span { color: #435b6c; }
    .stars { color: #d78a16; letter-spacing: 2px; font-size: 19px; }
    .case-grid, .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .case-item { padding: 18px 0; border-top: 2px solid var(--blue); }
    .case-item h3 { margin: 0 0 8px; font-size: 17px; }
    .case-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .reviews { background: #eef3fb; border-block: 1px solid #dce6f4; }
    .review { padding: 18px; background: #fff; border: 1px solid var(--line); }
    .review blockquote { margin: 0; color: #42546d; font-size: 14px; }
    .review figcaption { margin-top: 13px; color: var(--blue-dark); font-size: 13px; font-weight: 700; }
    .review-grid figure { margin: 0; }
    .comparison-note { margin: 13px 0 0; color: var(--muted); font-size: 13px; }
    .matching { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .matching-copy p { color: var(--muted); }
    .contact-details { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: #40536f; font-size: 14px; }
    .contact-details p { margin: 6px 0; }
    .contact-details a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    label { color: #354861; font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; padding: 11px 12px; border: 1px solid #cbd7e7; border-radius: 4px; color: var(--ink); background: #fff; outline: none; }
    input:focus, select:focus, textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(20,89,217,.1); }
    textarea { min-height: 115px; resize: vertical; }
    .form-foot { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
    .form-note { margin: 0; color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); background: #fff; }
    summary { position: relative; padding: 16px 42px 16px 16px; cursor: pointer; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 16px; top: 13px; color: var(--blue); font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; padding: 0 16px 16px; color: var(--muted); font-size: 14px; }
    .articles { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-link { padding: 16px; border: 1px solid var(--line); background: #fff; color: var(--blue-dark); font-weight: 700; font-size: 14px; }
    .article-link span { display: block; margin-top: 7px; color: var(--muted); font-size: 12px; font-weight: 400; }
    .extras { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
    .extras h3 { margin: 0 0 12px; font-size: 17px; }
    .link-list { display: flex; flex-wrap: wrap; gap: 9px 16px; }
    .link-list a { color: #31588e; font-size: 14px; text-decoration: underline; text-underline-offset: 3px; }
    .media-row { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; align-items: start; margin-top: 30px; }
    .media-row figure { margin: 0; }
    .media-row img { display: block; width: 100%; height: auto; }
    .media-row .square-media { max-width: 340px; }
    .media-row figcaption { margin-top: 7px; color: var(--muted); font-size: 12px; }
    .qr-area { display: flex; align-items: start; gap: 16px; margin-top: 24px; }
    .qr-area img { width: 112px; height: auto; border: 1px solid var(--line); background: #fff; }
    .qr-area p { margin: 0; color: var(--muted); font-size: 13px; }
    footer { padding: 24px 0; background: #e7eef8; color: #2b3d57; border-top: 1px solid #d5e0ef; }
    .footer-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
    .footer-row p { margin: 0; font-size: 13px; }
    .footer-row a { color: #164ca7; }
    .float-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; }
    .float-contact a { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: var(--blue); color: #fff; box-shadow: 0 5px 18px rgba(13,55,126,.25); font-size: 13px; font-weight: 700; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .nav-row { flex-wrap: wrap; padding-block: 12px; }
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
      .nav-actions { margin-left: auto; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; border-top: 1px solid var(--line); padding-top: 8px; }
      .nav-links.is-open { display: flex; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .articles { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 64px; }
      .nav-actions .button { display: none; }
      .hero-inner { padding-block: 48px 32px; }
      .hero-strip { grid-template-columns: repeat(2, 1fr); row-gap: 18px; margin-top: 34px; }
      .hero-stat { padding-right: 10px; }
      main section { padding-block: 48px; }
      .section-head { display: block; }
      .about-layout, .solution-band, .matching, .extras { grid-template-columns: 1fr; gap: 24px; }
      .capability-list { grid-template-columns: 1fr 1fr; }
      .steps { grid-template-columns: repeat(2, 1fr); gap: 28px 18px; }
      .services-grid, .case-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .articles { grid-template-columns: 1fr 1fr; }
      .media-row { grid-template-columns: 1fr; }
      .media-row .square-media { max-width: 100%; }
      .footer-row { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 460px) {
      .brand img { width: 36px; }
      .nav-links a { padding-inline: 8px; }
      .services-grid, .case-grid, .review-grid { grid-template-columns: 1fr; }
      .capability-list { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr; gap: 26px; }
      .articles { grid-template-columns: 1fr; }
      form { grid-template-columns: 1fr; }
      .field-wide, .form-foot { grid-column: auto; }
      .rating { align-items: flex-start; flex-direction: column; gap: 8px; }
      .solution-list li { flex-direction: column; gap: 2px; }
      .solution-list span { text-align: left; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }