:root {
      color-scheme: light;
      --ink: #172331;
      --muted: #586574;
      --paper: #f7faf8;
      --white: #fff;
      --line: #dfe8e4;
      --green: #a8f04a;
      --teal: #087f75;
      --blue: #5267df;
      --pink: #ed5c91;
      --orange: #ef9a39;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    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 { display: block; max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .topbar { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .nav { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .ai-page-logo { width: 42px; height: 42px; object-fit: contain; }
    .brand-name { font-size: 17px; font-weight: 800; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; gap: 0; list-style: none; padding: 0; margin: 0; }
    .nav-links a { display: block; padding: 10px 11px; color: #40505d; font-size: 13px; transition: color .2s; }
    .nav-links a:hover { color: var(--teal); }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: white; color: var(--ink); border-radius: 4px; }
    .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; font-weight: 750; transition: transform .2s, box-shadow .2s, background .2s; cursor: pointer; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(23,35,49,.12); }
    .button-primary { background: var(--green); color: #192619; }
    .button-dark { background: var(--ink); color: white; }
    .button-outline { background: white; color: var(--ink); border-color: #bfcac6; }
    .hero { overflow: hidden; background: #eaf5ef; border-bottom: 1px solid #d6e8df; }
    .hero-inner { position: relative; padding-top: 76px; padding-bottom: 60px; }
    .hero-inner::before { content: ""; position: absolute; width: 360px; height: 360px; right: 6%; top: 52px; border: 1px solid rgba(8,127,117,.19); border-radius: 50%; box-shadow: 0 0 0 40px rgba(8,127,117,.035), 0 0 0 82px rgba(8,127,117,.025); pointer-events: none; }
    .hero-inner::after { content: ""; position: absolute; right: 14%; top: 150px; width: 125px; height: 125px; border: 1px solid rgba(82,103,223,.38); transform: rotate(35deg); background: rgba(168,240,74,.16); }
    .hero-copy { position: relative; z-index: 1; max-width: 720px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 17px; color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--pink); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 700px; margin-bottom: 18px; font-size: clamp(38px, 6vw, 68px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy > p { max-width: 620px; margin-bottom: 27px; color: #43535c; font-size: 17px; }
    .hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin-top: 20px; color: #596a70; font-size: 13px; }
    .hero-note strong { color: var(--ink); }
    .hero-strip { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 58px; border-top: 1px solid rgba(23,35,49,.16); }
    .hero-metric { padding: 17px 20px 0 0; }
    .hero-metric strong { display: block; font-size: 21px; }
    .hero-metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 78px 0; }
    .section-tint { background: #eff5f0; border-block: 1px solid #e1e9e3; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 31px; }
    .section-head h2 { max-width: 620px; margin-bottom: 0; font-size: clamp(27px, 4vw, 40px); line-height: 1.2; }
    .section-head p { max-width: 440px; margin-bottom: 3px; color: var(--muted); }
    .kicker { margin-bottom: 9px; color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: 1px; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: start; }
    .intro-copy { max-width: 620px; color: #46545e; font-size: 16px; }
    .intro-copy strong { color: var(--ink); }
    .capability-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; border-top: 1px solid var(--line); }
    .capability { display: flex; gap: 12px; padding: 17px 0; border-bottom: 1px solid var(--line); }
    .capability-mark { display: grid; place-items: center; width: 30px; height: 30px; flex: 0 0 auto; background: #d8f4a8; color: #263a1d; font-weight: 900; }
    .capability strong { display: block; font-size: 14px; }
    .capability span { display: block; color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: #dbe5df; border: 1px solid #dbe5df; }
    .service { min-height: 176px; padding: 22px 20px; background: white; transition: transform .22s, box-shadow .22s; }
    .service:hover { position: relative; z-index: 1; transform: translateY(-4px); box-shadow: 0 12px 25px rgba(24,44,39,.1); }
    .service-index { display: block; margin-bottom: 19px; color: var(--teal); font: 700 12px/1 monospace; }
    .service h3 { margin-bottom: 8px; font-size: 17px; }
    .service p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
    .service-more { display: inline-block; margin-top: 10px; color: var(--teal); font-size: 12px; font-weight: 750; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
    .step { position: relative; padding: 18px 18px 19px; border-top: 3px solid var(--teal); background: white; }
    .step::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 19px; color: var(--pink); font: 800 13px monospace; }
    .step h3 { margin-bottom: 8px; font-size: 17px; }
    .step p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .tag-cloud span { padding: 8px 12px; border: 1px solid #cddbd4; background: white; color: #34454b; font-size: 13px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
    .solution { border-top: 3px solid var(--blue); padding: 20px 0 0; }
    .solution:nth-child(2) { border-color: var(--orange); }
    .solution:nth-child(3) { border-color: var(--pink); }
    .solution h3 { margin-bottom: 7px; font-size: 18px; }
    .solution p { margin: 0; color: var(--muted); font-size: 14px; }
    .network { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .network-copy { color: var(--muted); }
    .network-copy strong { color: var(--ink); }
    .network-points { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; }
    .network-points div { padding: 14px 0; border-bottom: 1px solid var(--line); font-weight: 700; font-size: 14px; }
    .network-points span { display: block; color: var(--muted); font-size: 12px; font-weight: 400; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .case { overflow: hidden; background: white; border: 1px solid var(--line); }
    .case-image { aspect-ratio: 16 / 9; overflow: hidden; background: #edf2ee; }
    .case-image img { width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 17px 18px 19px; }
    .case-body h3 { margin-bottom: 6px; font-size: 17px; }
    .case-body p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 30px; }
    .review { padding: 20px 0; border-top: 1px solid #cdd9d2; }
    .review blockquote { margin: 0 0 14px; color: #34424a; font-size: 14px; }
    .review footer { color: var(--muted); font-size: 12px; }
    .stars { margin-bottom: 9px; color: #c36b25; letter-spacing: 1px; }
    .compare-wrap { display: grid; grid-template-columns: .75fr 1.25fr; gap: 35px; align-items: start; }
    .score-panel { padding: 25px; color: var(--ink); background: var(--green); }
    .score-panel .score-label { font-weight: 800; }
    .score { margin: 12px 0 0; font-size: 63px; font-weight: 850; line-height: 1; }
    .score small { font-size: 19px; }
    .score-stars { margin: 10px 0 18px; color: #39432c; font-size: 22px; }
    .score-panel p { margin: 0; font-size: 13px; }
    .table-scroll { overflow-x: auto; background: white; border: 1px solid var(--line); }
    table { width: 100%; min-width: 620px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid #e7ece9; font-size: 13px; }
    th { background: #eef4f0; font-size: 12px; }
    tbody tr:last-child td { border-bottom: 0; }
    .good { color: #087f59; font-weight: 750; }
    .caveat { margin: 12px 0 0; color: var(--muted); font-size: 11px; }
    .token-panel { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: 25px 28px; background: #e7f2ed; border-left: 4px solid var(--teal); }
    .token-panel h3 { margin-bottom: 6px; font-size: 19px; }
    .token-panel p { max-width: 700px; margin: 0; color: var(--muted); font-size: 13px; }
    .news-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .news-link { display: block; padding: 16px; background: white; border: 1px solid var(--line); font-size: 13px; font-weight: 700; transition: border-color .2s, transform .2s; }
    .news-link:hover { transform: translateY(-3px); border-color: var(--teal); }
    .news-link span { display: block; margin-bottom: 8px; color: var(--teal); font-size: 11px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 34px 17px 0; cursor: pointer; list-style: none; font-weight: 750; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 3px; top: 13px; color: var(--teal); font-size: 22px; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 780px; margin: -3px 35px 17px 0; color: var(--muted); font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
    .contact-copy p { color: var(--muted); }
    .contact-item { margin-top: 15px; font-size: 14px; }
    .contact-item strong { display: inline-block; min-width: 82px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 22px; background: white; border: 1px solid var(--line); }
    .field { display: grid; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { font-size: 12px; font-weight: 750; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; color: var(--ink); background: #fbfcfb; border: 1px solid #cbd6d0; border-radius: 2px; }
    .field textarea { min-height: 110px; resize: vertical; }
    .contact-form .button { grid-column: 1 / -1; justify-self: start; }
    .qr-area { display: flex; align-items: center; gap: 16px; margin-top: 24px; }
    .qr-area img { width: 110px; border: 1px solid var(--line); }
    .qr-area span { color: var(--muted); font-size: 12px; }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 25px 28px; margin-top: 42px; background: #192d2b; color: white; }
    .join-band h3 { margin-bottom: 4px; font-size: 20px; }
    .join-band p { margin: 0; color: #cad7d2; font-size: 13px; }
    .footer { padding: 30px 0 23px; background: #e8efeb; color: #25343c; border-top: 1px solid #d7e0db; }
    .footer-top { display: flex; justify-content: space-between; align-items: start; gap: 28px; }
    .footer p { margin: 8px 0 0; color: #53615e; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 17px; max-width: 650px; }
    .footer-links a { color: #344b47; font-size: 12px; }
    .footer-links a:hover { color: var(--teal); }
    .copyright { margin-top: 22px; padding-top: 13px; border-top: 1px solid #d1dcd6; color: #596762; font-size: 11px; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 22px; display: grid; gap: 8px; }
    .float-contact a { display: grid; place-items: center; width: 48px; height: 48px; color: white; background: var(--teal); border-radius: 50%; box-shadow: 0 5px 17px rgba(18,48,43,.2); font-size: 12px; font-weight: 750; }
    .float-contact a:last-child { color: var(--ink); background: var(--green); font-size: 20px; }
    .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 { gap: 12px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-actions > .button { display: none; }
      .nav-links { display: none; position: absolute; top: 74px; left: 0; right: 0; padding: 10px 20px 18px; background: white; border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 10px 4px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .news-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero-inner { padding-top: 55px; padding-bottom: 38px; }
      .hero-inner::before { width: 230px; height: 230px; right: -80px; top: 130px; }
      .hero-inner::after { right: 12px; top: 203px; width: 78px; height: 78px; }
      .hero-copy { max-width: 100%; }
      .hero-copy > p { max-width: 500px; font-size: 15px; }
      .hero-strip { grid-template-columns: 1fr 1fr; row-gap: 13px; margin-top: 40px; }
      .hero-metric { padding: 12px 8px 0 0; }
      .section { padding: 57px 0; }
      .section-head { display: block; margin-bottom: 23px; }
      .section-head p { margin-top: 12px; }
      .intro-grid, .network, .compare-wrap, .contact-grid { grid-template-columns: 1fr; gap: 28px; }
      .capability-list { gap: 0 13px; }
      .service-grid { grid-template-columns: 1fr 1fr; }
      .service { min-height: 165px; padding: 17px 14px; }
      .workflow { grid-template-columns: 1fr 1fr; gap: 12px; }
      .solution-grid, .case-grid { grid-template-columns: 1fr; gap: 22px; }
      .case { display: grid; grid-template-columns: 40% 60%; }
      .case-image { aspect-ratio: auto; min-height: 130px; }
      .case-body { padding: 14px; }
      .review-grid { grid-template-columns: 1fr 1fr; gap: 0 18px; }
      .news-grid { grid-template-columns: 1fr 1fr; }
      .token-panel { grid-template-columns: 1fr; padding: 20px; }
      .contact-form { padding: 17px; }
      .join-band, .footer-top { align-items: flex-start; flex-direction: column; }
      .join-band { padding: 22px; }
    }
    @media (max-width: 430px) {
      .brand-name { font-size: 15px; }
      .ai-page-logo { width: 36px; height: 36px; }
      .hero-actions { align-items: stretch; flex-direction: column; max-width: 270px; }
      .hero-actions .button { width: 100%; }
      .capability-list, .service-grid, .workflow, .review-grid { grid-template-columns: 1fr; }
      .service { min-height: auto; }
      .case { grid-template-columns: 1fr; }
      .case-image { aspect-ratio: 16 / 9; }
      .contact-form { grid-template-columns: 1fr; }
      .field-wide, .contact-form .button { grid-column: auto; }
      .float-contact { right: 10px; bottom: 12px; }
    }