:root {
      color-scheme: light;
      --ink: #20283a;
      --muted: #5f6a7d;
      --line: #e5eaf1;
      --paper: #fff;
      --wash: #f6f9fc;
      --pink: #ff5f83;
      --coral: #ff8b66;
      --yellow: #ffd76a;
      --teal: #28b9aa;
      --blue: #5489e8;
      --violet: #8a72dc;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 86px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font: 16px/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { max-width: 100%; }
    .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(14px); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; font-size: 18px; }
    .ai-page-logo { display: block; width: 38px; height: auto; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; color: #465168; font-size: 14px; border-radius: 6px; transition: color .2s, background .2s; }
    .nav-links a:hover { color: #d83e69; background: #fff0f3; }
    .nav-actions { display: flex; align-items: center; gap: 9px; }
    .nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 6px; cursor: pointer; }
    .button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; padding: 12px 19px; border: 0; border-radius: 6px; font-weight: 750; cursor: pointer; transition: transform .18s, box-shadow .18s, background .18s; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 9px 22px rgba(40,52,80,.16); }
    .button-primary { background: var(--pink); color: #fff; }
    .button-primary:hover { background: #e94970; }
    .button-dark { background: var(--ink); color: #fff; }
    .button-light { background: #fff; color: var(--ink); border: 1px solid var(--line); }
    .button-small { padding: 9px 14px; font-size: 14px; }
    .hero { position: relative; overflow: hidden; padding: 74px 0 52px; background: linear-gradient(120deg,#fff6e9 0%,#fff1f5 48%,#eef8ff 100%); }
    .hero::before, .hero::after { position: absolute; content: ""; border: 1px solid rgba(255,95,131,.2); border-radius: 50%; pointer-events: none; }
    .hero::before { width: 340px; height: 340px; right: -110px; top: -165px; box-shadow: 0 0 0 34px rgba(255,215,106,.12),0 0 0 72px rgba(84,137,232,.07); }
    .hero::after { width: 160px; height: 160px; left: -80px; bottom: -90px; border-color: rgba(40,185,170,.32); box-shadow: 0 0 0 22px rgba(40,185,170,.08); }
    .hero-content { position: relative; z-index: 1; max-width: 900px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 17px; color: #c53d66; font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
    .eyebrow::before { width: 22px; height: 3px; background: var(--coral); content: ""; }
    h1 { max-width: 820px; margin: 0; font-size: clamp(38px, 5vw, 68px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 680px; margin: 21px 0 25px; color: #525e73; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin-top: 15px; color: #6c7587; font-size: 13px; }
    .hero-metrics { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 46px; border-top: 1px solid rgba(76,87,108,.18); }
    .metric { padding: 20px 18px 3px 0; }
    .metric strong { display: block; font-size: 19px; line-height: 1.3; }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 76px 0; }
    .section-tint { background: #f7fafc; }
    .section-color { background: linear-gradient(130deg,#fff7e9,#fff4f6 48%,#f0f8ff); }
    .section-head { max-width: 730px; margin-bottom: 34px; }
    .section-head.center { margin-inline: auto; text-align: center; }
    .section-kicker { margin: 0 0 9px; color: #cc466a; font-size: 13px; font-weight: 800; }
    h2 { margin: 0; font-size: clamp(27px,3.5vw,40px); line-height: 1.22; letter-spacing: 0; }
    .section-head p { margin: 13px 0 0; color: var(--muted); }
    h3 { margin: 0; font-size: 19px; line-height: 1.4; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: start; }
    .intro-copy p { margin: 0 0 15px; color: #4f5b70; }
    .check-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; margin: 23px 0 0; padding: 0; list-style: none; }
    .check-list li { display: flex; gap: 9px; color: #344158; font-size: 14px; }
    .check-list li::before { color: var(--teal); content: "✓"; font-weight: 900; }
    .model-panel { padding: 25px; background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--yellow); }
    .model-panel p { margin: 9px 0 17px; color: var(--muted); font-size: 14px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag { display: inline-block; padding: 6px 10px; color: #354158; background: #f1f5f8; border-radius: 4px; font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .service-item { min-height: 185px; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 5px; transition: transform .2s, box-shadow .2s, border-color .2s; }
    .service-item:hover { transform: translateY(-4px); border-color: #f6b3c2; box-shadow: 0 12px 25px rgba(40,52,80,.08); }
    .service-item p { margin: 9px 0 0; color: var(--muted); font-size: 14px; }
    .service-mark { display: inline-grid; width: 34px; height: 34px; margin-bottom: 15px; place-items: center; border-radius: 8px 8px 8px 2px; color: #2e3442; background: #ffe4a0; font-size: 15px; font-weight: 900; }
    .service-item:nth-child(3n+2) .service-mark { background: #d9f4ee; }
    .service-item:nth-child(3n) .service-mark { background: #ffe0e8; }
    .two-column { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 42px; }
    .media-stack { display: grid; gap: 14px; }
    .media-frame { overflow: hidden; border: 1px solid var(--line); background: #fff; }
    .media-frame img { display: block; width: 100%; height: auto; }
    .media-caption { padding: 13px 16px; color: #4c586c; font-size: 14px; }
    .process-list { display: grid; gap: 0; }
    .process-step { display: grid; grid-template-columns: 48px 1fr; gap: 17px; padding: 0 0 23px; }
    .process-step:not(:last-child) .step-number::after { position: absolute; top: 43px; left: 19px; width: 1px; height: calc(100% - 29px); background: #dce4eb; content: ""; }
    .step-number { position: relative; display: grid; width: 40px; height: 40px; place-items: center; color: #26354a; background: var(--yellow); border-radius: 50%; font-weight: 800; }
    .process-step:nth-child(2) .step-number { background: #c9eee7; }
    .process-step:nth-child(3) .step-number { background: #ffd8e2; }
    .process-step:nth-child(4) .step-number { background: #d8e5ff; }
    .process-step p { margin: 5px 0 0; color: var(--muted); font-size: 14px; }
    .industries { display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
    .industry { min-height: 130px; padding: 19px; background: #fff; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .industry h3 { font-size: 16px; }
    .industry p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }
    .network-strip { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; margin-top: 30px; background: var(--ink); color: #fff; }
    .network-strip div { padding: 22px; }
    .network-strip div + div { border-left: 1px solid rgba(255,255,255,.2); }
    .network-strip strong { display: block; margin-bottom: 5px; color: #ffd76a; }
    .network-strip span { color: #e3e8f1; font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .case { display: flex; min-height: 180px; flex-direction: column; align-items: flex-start; padding: 23px; background: #fff; border: 1px solid var(--line); }
    .case-label { margin-bottom: 12px; color: #cf4b6c; font-size: 12px; font-weight: 800; }
    .case p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
    .case a { margin-top: auto; padding-top: 17px; color: #3b6dc5; font-size: 14px; font-weight: 700; }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .review { padding: 21px; background: #fff; border: 1px solid var(--line); border-radius: 5px; }
    .review blockquote { margin: 0; color: #364155; font-size: 14px; }
    .review footer { margin-top: 17px; color: #6d7788; font-size: 13px; }
    .stars { margin-bottom: 8px; color: #e99e18; letter-spacing: 2px; }
    .score-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; align-items: start; }
    .score-box { padding: 25px; color: #20283a; background: #fff0d2; border-left: 5px solid var(--coral); }
    .score-box .score { margin: 7px 0; font-size: 48px; line-height: 1.1; font-weight: 850; }
    .score-box .stars { font-size: 22px; }
    .score-box p { margin: 8px 0 0; color: #596175; font-size: 14px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 610px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid var(--line); font-size: 14px; vertical-align: top; }
    th { color: #39445a; background: #f1f5f8; font-size: 13px; }
    tbody tr:last-child td { border-bottom: 0; }
    td:first-child { width: 28%; font-weight: 700; }
    .positive { color: #087f70; font-weight: 750; }
    .pricing-note { margin: 13px 0 0; color: var(--muted); font-size: 13px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 18px 42px 18px 0; list-style: none; cursor: pointer; font-weight: 750; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { position: absolute; top: 17px; right: 4px; color: #d44a6c; content: "+"; font-size: 23px; line-height: 1; transition: transform .2s; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { max-width: 850px; margin: 0; padding: 0 32px 18px 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5,1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .article-link { min-height: 134px; display: flex; flex-direction: column; justify-content: space-between; padding: 18px; border-right: 1px solid var(--line); }
    .article-link:last-child { border-right: 0; }
    .article-link span { color: #be4765; font-size: 12px; font-weight: 800; }
    .article-link strong { font-size: 15px; line-height: 1.5; }
    .article-link em { color: #737e8f; font-size: 12px; font-style: normal; }
    .contact-band { display: grid; grid-template-columns: 1fr .8fr; gap: 38px; align-items: start; }
    .contact-copy p { color: #546075; }
    .contact-details { display: grid; gap: 8px; margin-top: 21px; color: #404b60; font-size: 14px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; padding: 23px; background: #fff; border: 1px solid var(--line); }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1/-1; }
    .field label { color: #455168; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; color: var(--ink); background: #fff; border: 1px solid #d6dde7; border-radius: 4px; outline: none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(84,137,232,.12); }
    .field textarea { min-height: 108px; resize: vertical; }
    .contact-form .button { grid-column: 1/-1; justify-self: start; }
    .qr-panel { display: flex; align-items: center; gap: 18px; margin-top: 22px; }
    .qr-panel img { display: block; width: 112px; height: auto; border: 1px solid var(--line); }
    .qr-panel p { margin: 0; color: #535f73; font-size: 13px; }
    .footer { color: #fff; background: #20283a; }
    .footer-main { display: grid; grid-template-columns: 1.2fr 1fr; gap: 35px; padding: 33px 0 25px; }
    .footer-brand { display: flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 800; }
    .footer p { margin: 10px 0 0; color: #d9dfeb; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; align-content: start; gap: 9px 17px; }
    .footer-links a { color: #e7eaf0; font-size: 13px; }
    .footer-links a:hover { color: #ffd76a; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0 18px; color: #cbd2df; border-top: 1px solid rgba(255,255,255,.18); font-size: 12px; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: flex; align-items: center; gap: 8px; padding: 11px 15px; color: #fff; background: #ed5278; border-radius: 24px; box-shadow: 0 7px 22px rgba(50,45,62,.22); font-size: 14px; font-weight: 750; }
    .float-contact:hover { background: #d94068; }
    .reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.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: 980px) {
      .nav-row { flex-wrap: wrap; padding-block: 12px; }
      .nav-toggle { display: inline-grid; place-items: center; }
      .nav-actions { margin-left: auto; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; padding: 7px 0 4px; border-top: 1px solid var(--line); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 9px 12px; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .industries { grid-template-columns: repeat(2,1fr); }
      .article-list { grid-template-columns: repeat(3,1fr); }
      .article-link:nth-child(3) { border-right: 0; }
      .article-link:nth-child(n+4) { border-top: 1px solid var(--line); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 58px 0 34px; }
      .hero-copy { font-size: 16px; }
      .hero-metrics { grid-template-columns: repeat(2,1fr); margin-top: 33px; }
      .metric { padding: 15px 10px 4px 0; }
      .section { padding: 56px 0; }
      .intro-grid, .two-column, .score-layout, .contact-band { grid-template-columns: 1fr; gap: 25px; }
      .service-grid, .case-grid, .review-grid { grid-template-columns: 1fr; }
      .service-item { min-height: 0; }
      .network-strip { grid-template-columns: 1fr; }
      .network-strip div + div { border-top: 1px solid rgba(255,255,255,.2); border-left: 0; }
      .industries { grid-template-columns: 1fr 1fr; }
      .industry { padding: 15px; }
      .article-list { grid-template-columns: 1fr; }
      .article-link { min-height: 100px; border-right: 0; border-bottom: 1px solid var(--line); }
      .article-link:nth-child(n+2) { border-top: 0; }
      .article-link:last-child { border-bottom: 0; }
      .check-list { grid-template-columns: 1fr; }
      .contact-form { grid-template-columns: 1fr; padding: 18px; }
      .field.full, .contact-form .button { grid-column: auto; }
      .footer-main { grid-template-columns: 1fr; gap: 22px; }
      .footer-bottom { flex-direction: column; gap: 5px; }
      .nav-actions .button { display: none; }
      .float-contact { right: 12px; bottom: 12px; }
    }