:root {
      color-scheme: light;
      --ink: #172a2b;
      --muted: #536969;
      --teal: #087f78;
      --teal-dark: #075d59;
      --mint: #dff3ed;
      --line: #d8e8e3;
      --paper: #f5fbf9;
      --white: #fff;
      --coral: #c7553c;
      --gold: #9a6b19;
      --content: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--content), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; inset-block-start: 0; z-index: 20; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
    .nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 72px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .ai-page-logo { 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: 7px 8px; color: #385354; font-size: 13px; text-decoration: none; border-radius: 5px; }
    .nav-links a:hover, .nav-links a:focus-visible { color: var(--teal-dark); background: var(--mint); }
    .nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: white; color: var(--ink); border-radius: 5px; padding: 8px 11px; }
    .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 17px; border: 1px solid transparent; border-radius: 5px; background: var(--teal); color: white; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform .18s ease, background .18s ease, box-shadow .18s ease; }
    .button:hover { background: var(--teal-dark); box-shadow: 0 7px 18px rgba(7,93,89,.18); transform: translateY(-2px); }
    .button-outline { border-color: var(--teal); color: var(--teal-dark); background: transparent; }
    .button-outline:hover { color: white; }
    .hero { overflow: hidden; padding: 66px 0 46px; background: linear-gradient(140deg, #effaf6 0%, #e5f4f0 56%, #f8fcfa 100%); border-bottom: 1px solid var(--line); }
    .hero-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(260px, .7fr); gap: 46px; align-items: center; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 15px; color: var(--teal-dark); font-size: 13px; font-weight: 800; letter-spacing: .04em; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 720px; margin-bottom: 18px; font-size: clamp(36px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    h1 span { color: var(--teal); }
    .hero-copy { max-width: 650px; margin-bottom: 25px; color: #405958; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
    .hero-note { margin: 18px 0 0; color: var(--muted); font-size: 13px; }
    .hero-board { position: relative; padding: 23px; border: 1px solid #b9dcd2; background: rgba(255,255,255,.72); border-radius: 8px; box-shadow: 0 18px 42px rgba(30,94,82,.08); }
    .hero-board::after { content: ""; position: absolute; top: -10px; right: 22px; width: 58px; height: 4px; background: var(--coral); }
    .board-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 15px; border-bottom: 1px solid var(--line); }
    .board-head strong { font-size: 15px; }
    .board-tag { color: var(--teal-dark); font-size: 12px; font-weight: 700; }
    .signal-list { display: grid; gap: 13px; padding: 18px 0 3px; }
    .signal-row { display: flex; align-items: center; justify-content: space-between; gap: 15px; color: #49605e; font-size: 13px; }
    .signal-row b { color: var(--ink); font-size: 14px; }
    .signal-bar { width: 100px; height: 5px; overflow: hidden; border-radius: 8px; background: #dcebe6; }
    .signal-bar i { display: block; height: 100%; border-radius: inherit; background: var(--teal); }
    .hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 42px; border: 1px solid #cfe4de; background: rgba(255,255,255,.54); }
    .stat { padding: 15px 20px; border-right: 1px solid #cfe4de; }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; font-size: 18px; color: var(--teal-dark); }
    .stat span { color: var(--muted); font-size: 12px; }
    section { padding: 72px 0; scroll-margin-top: 84px; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
    .section-head h2 { margin-bottom: 7px; font-size: 32px; line-height: 1.2; }
    .section-head p { max-width: 620px; margin-bottom: 0; color: var(--muted); }
    .section-kicker { margin-bottom: 8px; color: var(--teal); font-size: 12px; font-weight: 800; text-transform: uppercase; }
    .intro-band { background: #fff; }
    .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 55px; align-items: start; }
    .intro-grid h2 { max-width: 520px; margin-bottom: 15px; font-size: 34px; line-height: 1.25; }
    .intro-grid p { color: var(--muted); }
    .intro-points { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 24px; }
    .point { padding-top: 13px; border-top: 2px solid var(--teal); }
    .point strong { display: block; margin-bottom: 5px; }
    .point span { color: var(--muted); font-size: 14px; }
    .services-section { background: #eaf5f1; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service { padding: 19px; border: 1px solid #cfe4de; background: rgba(255,255,255,.72); border-radius: 6px; transition: transform .18s ease, box-shadow .18s ease; }
    .service:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(24,75,67,.09); }
    .service h3 { margin-bottom: 7px; font-size: 17px; }
    .service p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .service-index { display: block; margin-bottom: 10px; color: var(--coral); font-size: 12px; font-weight: 800; }
    .workflows { background: #fff; }
    .workflow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-block: 1px solid var(--line); }
    .workflow-step { position: relative; padding: 23px 22px 23px 0; }
    .workflow-step:not(:last-child)::after { content: ""; position: absolute; top: 34px; right: 16px; width: 22px; height: 1px; background: #89b9ac; }
    .workflow-step b { display: block; margin-bottom: 8px; color: var(--teal); font-size: 13px; }
    .workflow-step h3 { margin-bottom: 7px; font-size: 17px; }
    .workflow-step p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-section { background: #f5fbf9; }
    .industry-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 38px; align-items: start; }
    .industry-copy { padding-right: 18px; }
    .industry-copy h2 { font-size: 32px; line-height: 1.25; }
    .industry-copy p { color: var(--muted); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .tag { padding: 8px 12px; border: 1px solid #c4ddd5; border-radius: 4px; background: #fff; color: #315753; font-size: 13px; }
    .network { background: #fff; }
    .network-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
    .network-copy p { color: var(--muted); }
    .network-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 18px; }
    .network-list span { padding: 7px 10px; border-left: 2px solid var(--teal); background: #eef7f4; color: #345451; font-size: 13px; }
    .network-aside { padding: 22px 24px; border-left: 3px solid var(--coral); background: #f3f8f6; }
    .network-aside strong { display: block; margin-bottom: 8px; }
    .network-aside p { margin: 0; color: var(--muted); font-size: 14px; }
    .cases { background: #eaf5f1; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
    .case { overflow: hidden; border: 1px solid #cfe4de; background: white; border-radius: 6px; }
    .case img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
    .case-copy { padding: 16px; }
    .case-copy h3 { margin-bottom: 6px; font-size: 16px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .compare { background: #fff; }
    .rating-line { display: flex; align-items: center; gap: 15px; padding: 16px 18px; margin-bottom: 19px; border: 1px solid #e7d7b6; background: #fffaf0; }
    .rating-score { color: var(--gold); font-size: 27px; font-weight: 800; white-space: nowrap; }
    .stars { color: #b87819; letter-spacing: 0; }
    .rating-line p { margin: 0; color: #5e5542; font-size: 14px; }
    .table-scroll { overflow-x: auto; border: 1px solid var(--line); }
    table { width: 100%; min-width: 740px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #edf7f4; color: #254c48; font-size: 13px; }
    td { color: #435957; font-size: 13px; }
    tr:last-child td { border-bottom: 0; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .match-section { background: #f5fbf9; }
    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .match-copy h2 { font-size: 32px; }
    .match-copy p { color: var(--muted); }
    .match-copy .button { margin-top: 8px; }
    .token-section { background: #fff; }
    .token-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 38px; align-items: start; }
    .token-table { border-top: 2px solid var(--teal); }
    .token-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; padding: 13px 12px; border-bottom: 1px solid var(--line); }
    .token-row strong { font-size: 14px; }
    .token-row span { color: var(--muted); font-size: 13px; }
    .token-note { padding: 18px; background: #edf7f4; border-radius: 5px; }
    .token-note h3 { margin-bottom: 8px; font-size: 17px; }
    .token-note p { margin: 0; color: var(--muted); font-size: 14px; }
    .reviews { background: #eaf5f1; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .review { padding: 18px; border-top: 2px solid var(--teal); background: #fff; }
    .review p { margin-bottom: 13px; color: #3f5754; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .faq-section { background: #fff; }
    .faq-list { max-width: 900px; border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 16px 35px 16px 3px; color: var(--ink); font-weight: 700; cursor: pointer; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 5px; top: 13px; color: var(--teal); font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 800px; margin: 0; padding: 0 34px 17px 3px; color: var(--muted); font-size: 14px; }
    .articles { background: #f5fbf9; }
    .article-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 28px; border-top: 1px solid var(--line); }
    .article-link { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 15px 2px; border-bottom: 1px solid var(--line); color: #31534f; text-decoration: none; }
    .article-link:hover { color: var(--teal); }
    .article-link span:last-child { color: var(--teal); }
    .resources { background: #fff; }
    .resource-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 35px; }
    .resource-grid h3 { margin-bottom: 12px; font-size: 17px; }
    .resource-links { display: flex; flex-wrap: wrap; gap: 10px 16px; }
    .resource-links a { color: var(--teal-dark); font-size: 14px; text-decoration-thickness: 1px; text-underline-offset: 3px; }
    .contact-section { background: #eaf5f1; }
    .contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .contact-copy h2 { font-size: 32px; }
    .contact-copy p { color: var(--muted); }
    .contact-info { display: grid; gap: 10px; margin-top: 20px; }
    .contact-info a, .contact-info span { color: #31534f; font-size: 14px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 22px; border: 1px solid #cfe4de; background: #fff; border-radius: 6px; }
    .field { display: grid; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    .field label { color: #36524f; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 43px; padding: 10px 11px; border: 1px solid #c9dad5; border-radius: 4px; color: var(--ink); background: white; }
    .field textarea { min-height: 105px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .join-section { padding: 46px 0; background: #dff1eb; }
    .join-row { display: flex; align-items: center; justify-content: space-between; gap: 25px; }
    .join-row h2 { margin-bottom: 5px; font-size: 25px; }
    .join-row p { margin: 0; color: var(--muted); }
    footer { padding: 26px 0; background: #e4f0ec; color: #294744; border-top: 1px solid #c8ddd6; }
    .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: #31534f; font-size: 13px; text-decoration: none; }
    .float-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; }
    .float-contact a { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 50%; background: var(--teal); color: white; font-size: 13px; font-weight: 800; text-decoration: none; box-shadow: 0 5px 18px rgba(7,93,89,.22); }
    .to-top { position: fixed; right: 22px; bottom: 80px; z-index: 15; display: none; width: 38px; height: 38px; border: 1px solid #b8d4cc; border-radius: 50%; background: #fff; color: var(--teal-dark); cursor: pointer; }
    .to-top.visible { display: block; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .nav-wrap { flex-wrap: wrap; padding-block: 12px; }
      .menu-toggle { display: inline-flex; align-items: center; }
      .nav-actions { margin-left: auto; }
      .nav-links { display: none; width: 100%; padding: 5px 0 10px; justify-content: flex-start; }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 8px 10px; }
      .hero-grid { gap: 25px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--content), calc(100% - 30px)); }
      .hero { padding: 48px 0 34px; }
      .hero-grid, .intro-grid, .industry-layout, .network-grid, .match-layout, .token-grid, .contact-layout { grid-template-columns: 1fr; }
      .hero-grid { gap: 30px; }
      h1 { font-size: 39px; }
      .hero-copy { font-size: 16px; }
      .hero-stats { grid-template-columns: 1fr 1fr; }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(-n+2) { border-bottom: 1px solid #cfe4de; }
      section { padding: 52px 0; }
      .section-head { display: block; }
      .section-head h2, .intro-grid h2, .industry-copy h2, .match-copy h2, .contact-copy h2 { font-size: 27px; }
      .workflow-grid { grid-template-columns: 1fr 1fr; }
      .workflow-step { padding: 18px 12px 18px 0; }
      .workflow-step::after { display: none; }
      .case-grid, .review-grid { grid-template-columns: 1fr; }
      .resource-grid { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr; }
      .contact-form { grid-template-columns: 1fr; padding: 17px; }
      .field-full { grid-column: auto; }
      .join-row, .footer-row { align-items: flex-start; flex-direction: column; }
      .rating-line { align-items: flex-start; flex-direction: column; gap: 5px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }