:root {
      color-scheme: light;
      --ink: #202222;
      --muted: #5d6260;
      --paper: #f8f8f4;
      --white: #fff;
      --line: #dedfd8;
      --lime: #d9f36a;
      --coral: #f2644b;
      --teal: #0f756f;
      --navy: #193b3a;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    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; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { border-bottom: 1px solid var(--line); background: var(--paper); }
    .header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 19px; white-space: nowrap; }
    .ai-page-logo { display: block; width: 38px; height: 38px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 10px 11px; text-decoration: none; color: #414644; font-size: 14px; }
    .nav-links a:hover { color: var(--teal); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 4px; background: var(--coral); color: #fff; padding: 12px 19px; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform .2s ease, background .2s ease; }
    .nav-cta:hover, .button:hover { background: #d94f39; transform: translateY(-2px); }
    .menu-toggle { display: none; border: 1px solid var(--line); border-radius: 4px; background: #fff; color: var(--ink); padding: 8px 12px; font: inherit; }
    .hero { overflow: hidden; position: relative; background: var(--navy); color: #fff; }
    .hero::after { content: ""; position: absolute; width: 280px; height: 280px; right: max(5%, calc((100vw - var(--container)) / 2)); top: 42px; border: 1px solid rgba(217,243,106,.38); border-radius: 50%; box-shadow: 0 0 0 34px rgba(217,243,106,.06), 0 0 0 70px rgba(217,243,106,.035); pointer-events: none; }
    .hero-inner { position: relative; z-index: 1; padding-block: 76px 52px; }
    .hero-copy { max-width: 720px; }
    .eyebrow { color: var(--lime); text-transform: uppercase; font-size: 13px; font-weight: 800; letter-spacing: 1px; }
    h1 { max-width: 690px; margin: 14px 0 18px; font-size: clamp(38px, 6vw, 68px); line-height: 1.12; }
    .hero p { max-width: 640px; margin: 0; color: #e4ece6; font-size: 18px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
    .button-lime { background: var(--lime); color: #202222; }
    .button-lime:hover { background: #c5df54; }
    .button-outline { border: 1px solid rgba(255,255,255,.5); background: transparent; color: #fff; }
    .button-outline:hover { background: rgba(255,255,255,.1); }
    .hero-strip { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 38px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.22); color: #e0e9e4; font-size: 14px; }
    .hero-strip span::before { content: "＋"; color: var(--lime); margin-right: 8px; font-weight: 800; }
    section { padding-block: 64px; scroll-margin-top: 20px; }
    .section-head { max-width: 720px; margin-bottom: 30px; }
    .section-kicker { color: var(--teal); font-size: 13px; font-weight: 800; }
    h2 { margin: 6px 0 10px; font-size: clamp(28px, 4vw, 40px); line-height: 1.2; }
    .section-head p, .intro-copy { margin: 0; color: var(--muted); }
    .stats { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); background: #fff; }
    .stat { padding: 24px 20px; border-right: 1px solid var(--line); }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; color: var(--teal); font-size: 25px; line-height: 1.2; }
    .stat span { color: var(--muted); font-size: 14px; }
    .intro-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 42px; align-items: start; }
    .intro-copy p { margin: 0 0 14px; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; margin: 0; padding: 0; list-style: none; }
    .capability-list li { padding: 15px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; }
    .capability-list span { color: var(--muted); font-size: 14px; }
    .services-band { background: #ecefe8; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { min-width: 0; padding: 21px; background: #fff; border-top: 3px solid var(--teal); transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(24,48,44,.08); }
    .service-item h3 { margin: 0 0 7px; font-size: 18px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-item:nth-child(3n + 2) { border-color: var(--coral); }
    .service-item:nth-child(3n) { border-color: #a2b930; }
    .platforms { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
    .platforms span { padding: 6px 11px; border: 1px solid #cfd4c9; border-radius: 3px; color: #353b38; background: #f9faf6; font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: flow; }
    .step { position: relative; padding: 18px 18px 18px 0; border-top: 2px solid var(--teal); counter-increment: flow; }
    .step::before { content: "0" counter(flow); display: block; margin-bottom: 12px; color: var(--coral); font-size: 14px; font-weight: 800; }
    .step h3 { margin: 0 0 6px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .industry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 32px; }
    .industry-row { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 17px 0; border-bottom: 1px solid var(--line); }
    .industry-row strong { color: var(--teal); }
    .industry-row span { color: var(--muted); }
    .network { background: #fff; border-block: 1px solid var(--line); }
    .network-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 38px; align-items: center; }
    .network-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; margin: 22px 0 0; padding: 0; list-style: none; }
    .network-points li { padding-left: 18px; position: relative; }
    .network-points li::before { content: ""; position: absolute; left: 0; top: .65em; width: 7px; height: 7px; background: var(--coral); }
    .media-frame { padding: 8px; background: var(--lime); }
    .media-frame img { display: block; width: 100%; object-fit: contain; }
    .evaluation { display: grid; grid-template-columns: .75fr 1.25fr; gap: 34px; align-items: start; }
    .score-panel { padding: 27px; background: var(--navy); color: #fff; }
    .score-panel strong { display: block; color: var(--lime); font-size: 48px; line-height: 1.1; }
    .score-panel p { margin: 8px 0; }
    .stars { color: var(--lime); letter-spacing: 0; font-size: 22px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 520px; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid var(--line); }
    th { background: #eef1e9; }
    td:last-child { color: var(--teal); font-weight: 700; }
    .case-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 20px; align-items: start; }
    .case-main img, .case-side img { display: block; width: 100%; object-fit: contain; background: #ecefe8; }
    .case-main h3, .case-side h3 { margin: 14px 0 5px; }
    .case-main p, .case-side p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-side { display: grid; gap: 24px; }
    .reviews { background: #ecefe8; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 20px; background: #fff; border-bottom: 3px solid var(--coral); }
    .review p { margin: 0 0 15px; color: #3e4441; }
    .review strong { display: block; font-size: 14px; }
    .review span { color: var(--muted); font-size: 13px; }
    .articles { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; }
    .article-link { display: flex; justify-content: space-between; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
    .article-link span:first-child { font-weight: 650; }
    .article-link span:last-child { color: var(--teal); white-space: nowrap; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 34px 17px 0; font-weight: 700; cursor: pointer; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 3px; color: var(--teal); font-size: 22px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; padding: 0 28px 17px 0; color: var(--muted); }
    .contact { background: var(--navy); color: #fff; }
    .contact .section-kicker { color: var(--lime); }
    .contact .section-head p { color: #d6e1dc; }
    .contact-layout { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: start; }
    .contact-info p { color: #d6e1dc; }
    .contact-info a { color: var(--lime); }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .field { display: grid; gap: 5px; }
    .field-full { grid-column: 1 / -1; }
    .field label { font-size: 14px; color: #edf2ef; }
    .field input, .field select, .field textarea { width: 100%; border: 1px solid #71817b; border-radius: 3px; background: #fff; color: var(--ink); padding: 11px 12px; font: inherit; }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .site-footer { background: #f0f1eb; color: #252a28; border-top: 1px solid var(--line); }
    .footer-top { display: flex; justify-content: space-between; gap: 26px; padding-block: 25px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; align-content: start; }
    .footer-links a { color: #285d58; font-size: 14px; }
    .footer-bottom { padding: 14px 0 20px; border-top: 1px solid var(--line); color: #5d6260; font-size: 13px; }
    .float-contact { position: fixed; right: 18px; bottom: 20px; z-index: 5; display: grid; gap: 8px; }
    .float-contact a { display: block; padding: 10px 13px; background: var(--coral); color: #fff; text-decoration: none; font-size: 13px; font-weight: 700; border-radius: 3px; box-shadow: 0 5px 18px rgba(0,0,0,.16); }
    .float-contact a:last-child { background: var(--teal); }
    .to-top { position: fixed; right: 20px; bottom: 110px; z-index: 5; display: none; width: 40px; height: 40px; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; font-size: 20px; }
    .to-top.visible { display: block; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: none; }
    @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: 900px) {
      .menu-toggle { display: inline-flex; }
      .nav-links { display: none; position: absolute; top: 76px; left: 0; right: 0; z-index: 4; padding: 12px 20px 18px; background: var(--paper); border-bottom: 1px solid var(--line); }
      .nav-links.open { display: flex; justify-content: flex-start; }
      .nav-links a { padding: 9px 12px; }
      .header-inner { position: relative; }
      .header-actions { display: flex; align-items: center; gap: 10px; }
      .intro-layout, .network-inner, .evaluation, .contact-layout { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .hero::after { right: -120px; opacity: .55; }
    }
    @media (max-width: 600px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .header-inner { min-height: 68px; }
      .brand { font-size: 17px; }
      .ai-page-logo { width: 32px; height: 32px; }
      .nav-links { top: 68px; }
      .nav-cta { padding: 9px 11px; font-size: 13px; }
      .hero-inner { padding-block: 58px 38px; }
      .hero p { font-size: 16px; }
      section { padding-block: 48px; }
      .stats { grid-template-columns: repeat(2, 1fr); }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .service-grid, .workflow, .industry-grid, .review-grid, .articles, .case-grid { grid-template-columns: 1fr; }
      .capability-list { grid-template-columns: 1fr; }
      .industry-row { grid-template-columns: 95px 1fr; }
      .network-points { grid-template-columns: 1fr; }
      .contact-form { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .footer-top { flex-direction: column; }
      .float-contact { right: 10px; bottom: 12px; }
      .float-contact a { padding: 9px 10px; }
      .to-top { right: 12px; bottom: 104px; }
    }