:root {
      color-scheme: light;
      --ink: #14243a;
      --muted: #5f6e80;
      --blue: #1559ca;
      --blue-deep: #103d91;
      --cyan: #18a8bd;
      --line: #dce5ef;
      --paper: #f5f8fc;
      --white: #fff;
      --green: #16836f;
      --amber: #b36b18;
      --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: -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; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      border-bottom: 1px solid rgba(210, 221, 234, .85);
      background: rgba(255, 255, 255, .96);
      backdrop-filter: blur(14px);
    }
    .nav-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 72px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; flex: 0 0 auto; }
    .brand img { display: block; width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-weight: 800; font-size: 18px; letter-spacing: 0; white-space: nowrap; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; color: #46576b; text-decoration: none; font-size: 13px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--blue); }
    .nav-actions { display: flex; align-items: center; gap: 9px; }
    .menu-toggle { display: none; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); padding: 8px 12px; cursor: pointer; }
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 10px 18px;
      border: 1px solid transparent;
      border-radius: 5px;
      color: #fff;
      background: var(--blue);
      text-decoration: none;
      font-weight: 700;
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
      cursor: pointer;
    }
    .button:hover { transform: translateY(-2px); background: var(--blue-deep); box-shadow: 0 8px 20px rgba(21, 89, 202, .2); }
    .button-outline { color: var(--blue); border-color: #abc5e9; background: #fff; }
    .button-outline:hover { color: #fff; }
    .hero {
      overflow: hidden;
      position: relative;
      color: #fff;
      background: linear-gradient(125deg, #103d91 0%, #1559ca 55%, #117fae 100%);
    }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; }
    .hero::before {
      inset: 0;
      opacity: .18;
      background-image: linear-gradient(rgba(255,255,255,.17) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.17) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: linear-gradient(90deg, #000, transparent 85%);
    }
    .hero::after {
      width: 490px; height: 490px; right: -175px; top: -220px;
      border: 1px solid rgba(255,255,255,.23); border-radius: 50%;
      box-shadow: 0 0 0 42px rgba(255,255,255,.035), 0 0 0 88px rgba(255,255,255,.025);
    }
    .hero-inner { position: relative; z-index: 1; padding-top: 78px; padding-bottom: 58px; }
    .hero-copy { max-width: 800px; }
    .eyebrow { margin: 0 0 16px; color: #bcecff; font-size: 13px; font-weight: 700; letter-spacing: 0; }
    h1 { max-width: 720px; margin: 0; font-size: clamp(38px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero-lead { max-width: 690px; margin: 22px 0 0; color: #e3efff; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero .button { color: var(--blue-deep); background: #fff; }
    .hero .button:hover { background: #e8f5ff; }
    .hero .button-outline { color: #fff; border-color: rgba(255,255,255,.55); background: transparent; }
    .hero .button-outline:hover { color: var(--blue-deep); }
    .hero-tags { display: flex; flex-wrap: wrap; gap: 9px 18px; margin-top: 27px; color: #d3e8ff; font-size: 13px; }
    .hero-tags span::before { content: "•"; margin-right: 8px; color: #7be1df; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 48px; border-top: 1px solid rgba(255,255,255,.25); }
    .metric { padding: 20px 18px 0 0; }
    .metric strong { display: block; color: #fff; font-size: 20px; }
    .metric span { color: #d3e8ff; font-size: 13px; }
    main { overflow: hidden; }
    .section { padding: 76px 0; }
    .section-white { background: #fff; }
    .section-soft { background: #edf3fa; }
    .section-heading { max-width: 720px; margin-bottom: 32px; }
    .section-heading .eyebrow { margin-bottom: 8px; color: var(--blue); }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 38px); line-height: 1.25; letter-spacing: 0; }
    .section-heading p { margin: 12px 0 0; color: var(--muted); }
    h3 { margin: 0; font-size: 18px; line-height: 1.4; }
    p { margin-top: 0; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
    .intro-copy p { color: var(--muted); margin: 14px 0 0; }
    .intro-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 22px; margin: 22px 0 0; padding: 0; list-style: none; }
    .intro-points li { padding: 12px 0; border-bottom: 1px solid var(--line); font-weight: 650; }
    .intro-points li::before { content: "✓"; margin-right: 9px; color: var(--green); }
    .platform-note { padding: 22px 24px; border-left: 4px solid var(--cyan); background: #eef8f9; color: #294b59; }
    .platform-note strong { color: var(--ink); }
    .capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .capability {
      min-height: 172px; padding: 20px; border: 1px solid var(--line); border-radius: 5px; background: #fff;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .capability:hover, .review:hover { transform: translateY(-4px); border-color: #a8c8f0; box-shadow: 0 12px 28px rgba(26, 58, 96, .09); }
    .cap-icon { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 14px; border-radius: 5px; color: var(--blue); background: #eaf2ff; font-weight: 800; }
    .capability p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
    .strip { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 22px; padding: 18px 20px; border-radius: 5px; background: #e8f4f7; }
    .strip p { margin: 0; color: #315361; }
    .workflow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: step; }
    .step { position: relative; padding: 19px 14px 0 0; border-top: 2px solid #7ab4da; counter-increment: step; }
    .step::before { content: "0" counter(step); display: inline-block; margin-bottom: 12px; color: var(--blue); font-size: 13px; font-weight: 800; }
    .step p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
    .industry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; }
    .industry { display: grid; grid-template-columns: 110px 1fr; gap: 15px; padding: 19px 0; border-bottom: 1px solid var(--line); }
    .industry strong { color: var(--blue-deep); }
    .industry span { color: var(--muted); font-size: 14px; }
    .network-row { display: flex; flex-wrap: wrap; gap: 8px; }
    .network-row span { padding: 7px 11px; border: 1px solid #b9d0e8; border-radius: 4px; color: #294e76; background: #fff; font-size: 14px; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 5px; background: #fff; }
    .compare { width: 100%; border-collapse: collapse; min-width: 670px; }
    .compare th, .compare td { padding: 14px 17px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    .compare thead th { color: #fff; background: var(--blue-deep); }
    .compare tbody th { width: 22%; color: var(--ink); background: #f3f7fc; }
    .compare td { color: #516174; }
    .rating { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: 0 0 20px; }
    .rating strong { color: var(--blue-deep); font-size: 30px; }
    .stars { color: #c47a1b; font-size: 20px; letter-spacing: 0; }
    .rating span:last-child { color: var(--muted); }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .case { overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: #fff; }
    .case-media { aspect-ratio: 16 / 8; overflow: hidden; background: #e9eef5; }
    .case-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-copy { padding: 18px 20px 20px; }
    .case-copy p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
    .promo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .promo { padding: 17px; border: 1px solid var(--line); background: #fff; }
    .promo-media { aspect-ratio: 1 / 1; overflow: hidden; background: #e9eef5; }
    .promo-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .promo h3 { margin-top: 15px; }
    .promo p { margin: 7px 0 0; color: var(--muted); font-size: 14px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 19px; border: 1px solid var(--line); border-radius: 5px; background: #fff; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
    .review p { min-height: 84px; margin: 9px 0 15px; color: #46576b; font-size: 14px; }
    .review strong { color: var(--blue-deep); font-size: 14px; }
    .review small { display: block; margin-top: 2px; color: var(--muted); }
    .faq-list { max-width: 900px; border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 42px 17px 0; font-weight: 700; cursor: pointer; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 5px; top: 13px; color: var(--blue); font-size: 24px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-answer { max-width: 790px; padding: 0 0 17px; color: var(--muted); }
    .faq-answer p { margin: 0; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0 18px; border-top: 1px solid var(--line); }
    .article-link { display: flex; align-items: center; min-height: 72px; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; font-weight: 650; }
    .article-link:hover { color: var(--blue); }
    .article-link span { margin-right: 9px; color: var(--cyan); font-weight: 800; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
    .tag-cloud a { padding: 8px 12px; border: 1px solid #bfd0e2; border-radius: 4px; color: #33536f; background: #fff; text-decoration: none; font-size: 14px; }
    .tag-cloud a:hover { border-color: var(--blue); color: var(--blue); }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding: 26px; border-left: 4px solid var(--cyan); background: #eaf3fb; }
    .join-band p { margin: 7px 0 0; color: var(--muted); }
    .contact-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 42px; align-items: start; }
    .contact-details { display: grid; gap: 12px; margin-top: 20px; }
    .contact-details a, .contact-details span { color: #344c66; text-decoration: none; overflow-wrap: anywhere; }
    .contact-details a:hover { color: var(--blue); }
    .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: #34475b; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #c9d5e2; border-radius: 4px; color: var(--ink); background: #fff; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #9dc5f0; border-color: var(--blue); }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .qr-wrap { display: flex; align-items: center; gap: 14px; margin-top: 20px; }
    .qr-wrap img { width: 104px; border: 1px solid var(--line); background: #fff; }
    .qr-wrap span { max-width: 160px; color: var(--muted); font-size: 13px; }
    .site-footer { padding: 24px 0; border-top: 1px solid #d3deea; color: #40546b; background: #eef3f8; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .footer-row p { margin: 0; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #315273; font-size: 13px; text-decoration: none; }
    .footer-links a:hover { color: var(--blue); }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .float-contact a { display: grid; place-items: center; width: 46px; height: 46px; border: 1px solid #c6d6e8; border-radius: 50%; color: var(--blue-deep); background: #fff; box-shadow: 0 4px 15px rgba(22,48,79,.13); text-decoration: none; font-size: 12px; font-weight: 800; }
    .float-contact a:hover { color: #fff; background: var(--blue); }
    .reveal { opacity: 0; transform: translateY(14px); 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; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 980px) {
      .nav-row { flex-wrap: wrap; padding-block: 12px; }
      .nav-links { order: 3; width: 100%; justify-content: flex-start; }
      .nav-links a { padding: 7px 9px 7px 0; margin-right: 11px; }
      .nav-actions { margin-left: auto; }
      .capability-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 64px; }
      .menu-toggle { display: inline-flex; }
      .nav-links { display: none; order: 3; align-items: stretch; padding: 8px 0 4px; }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .nav-links a { padding: 10px 8px; margin: 0; border-top: 1px solid #edf1f6; }
      .nav-actions .button { display: none; }
      .hero-inner { padding-top: 58px; padding-bottom: 40px; }
      .hero-lead { font-size: 15px; }
      .metrics { grid-template-columns: repeat(2, 1fr); gap: 16px 10px; margin-top: 34px; }
      .metric { padding-top: 15px; }
      .section { padding: 56px 0; }
      .intro-grid, .contact-layout { grid-template-columns: 1fr; gap: 25px; }
      .intro-points { grid-template-columns: 1fr; }
      .capability-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
      .capability { min-height: 0; padding: 16px; }
      .workflow { grid-template-columns: 1fr; gap: 13px; }
      .step { padding: 12px 0 0; }
      .industry-grid, .case-grid { grid-template-columns: 1fr; }
      .industry { grid-template-columns: 95px 1fr; }
      .promo-grid { grid-template-columns: 1fr; }
      .promo { display: grid; grid-template-columns: 105px 1fr; align-items: start; gap: 0 14px; }
      .promo-media { grid-row: span 2; }
      .promo h3 { margin-top: 2px; }
      .review-grid { grid-template-columns: 1fr; }
      .review p { min-height: 0; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .strip, .join-band { align-items: flex-start; flex-direction: column; }
      .contact-form { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .footer-row { align-items: flex-start; flex-direction: column; }
      .float-contact { right: 12px; bottom: 12px; }
      .float-contact a { width: 42px; height: 42px; }
    }