:root {
      color-scheme: dark;
      --bg: #110b19;
      --bg-soft: #191020;
      --panel: #21152a;
      --panel-light: #291a33;
      --line: #49304e;
      --text: #f6eff8;
      --muted: #c0b1c5;
      --pink: #ff4caa;
      --pink-soft: #ff88c9;
      --violet: #a778ff;
      --cyan: #7fe9ee;
      --lime: #ccf37e;
      --content: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 82px; }
    body {
      margin: 0;
      min-width: 320px;
      color: var(--text);
      background:
        radial-gradient(ellipse at 80% 8%, rgba(122, 53, 134, .20), transparent 33rem),
        radial-gradient(ellipse at 12% 44%, rgba(190, 39, 112, .11), transparent 32rem),
        var(--bg);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--content), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      border-bottom: 1px solid rgba(255,255,255,.09);
      background: rgba(17, 11, 25, .93);
      backdrop-filter: blur(16px);
    }
    .nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; text-decoration: none; font-weight: 750; }
    .ai-page-logo { display: block; width: 38px; max-width: 100%; height: auto; }
    .brand-name { font-size: 17px; white-space: nowrap; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 8px 10px; color: #d7c9dc; font-size: 13px; text-decoration: none; transition: color .2s; }
    .nav-links a:hover { color: var(--pink-soft); }
    .nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px; color: var(--text); background: var(--panel); cursor: pointer; }
    .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 17px; border: 1px solid transparent; border-radius: 6px;
      color: #1a0d1a; background: var(--pink); font-weight: 750; text-decoration: none;
      transition: transform .2s, box-shadow .2s, background .2s;
    }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,76,170,.24); background: #ff71bb; }
    .button.secondary { color: var(--text); background: transparent; border-color: #765279; }
    .button.secondary:hover { border-color: var(--pink); background: rgba(255,76,170,.08); }
    .button.small { min-height: 38px; padding: 7px 12px; font-size: 13px; }
    .hero { position: relative; overflow: hidden; border-bottom: 1px solid rgba(255,255,255,.08); }
    .hero::before {
      position: absolute; inset: 0; content: ""; pointer-events: none;
      background: linear-gradient(115deg, transparent 42%, rgba(255,76,170,.06) 42.2%, transparent 42.5%),
                  linear-gradient(25deg, transparent 67%, rgba(167,120,255,.09) 67.2%, transparent 67.5%);
    }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(270px, .75fr); gap: 56px; align-items: center; padding-block: 72px 60px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--pink-soft); font-size: 13px; font-weight: 700; letter-spacing: 0; }
    .eyebrow::before { width: 22px; height: 1px; content: ""; background: var(--pink); }
    h1 { max-width: 700px; margin: 14px 0 18px; font-size: clamp(40px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero h1 span { color: var(--pink-soft); }
    .hero-copy { max-width: 620px; margin: 0; color: #d0c0d5; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note { margin-top: 18px; color: #ae9eb5; font-size: 13px; }
    .signal-board { position: relative; padding: 22px; border: 1px solid #633b67; border-radius: 10px; background: linear-gradient(145deg, rgba(47,26,57,.92), rgba(26,16,34,.96)); box-shadow: 0 22px 70px rgba(0,0,0,.25); animation: rise-in .8s ease both; }
    .signal-title { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 14px; font-weight: 700; }
    .signal-title span:last-child { color: var(--cyan); font-size: 12px; }
    .signal-flow { display: grid; gap: 10px; padding-top: 16px; }
    .signal-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px; border: 1px solid rgba(255,255,255,.08); border-radius: 6px; background: rgba(255,255,255,.035); }
    .signal-row strong { font-size: 13px; }
    .signal-row small { color: var(--muted); font-size: 12px; }
    .signal-mark { color: var(--lime); font-size: 12px; }
    .signal-foot { margin: 15px 0 0; color: var(--muted); font-size: 12px; }
    .metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border-block: 1px solid rgba(255,255,255,.09); background: rgba(255,255,255,.08); }
    .metric { padding: 19px 22px; background: #160e1e; }
    .metric strong { display: block; color: var(--pink-soft); font-size: 20px; }
    .metric span { color: var(--muted); font-size: 12px; }
    section.content-section { padding-block: 68px; border-bottom: 1px solid rgba(255,255,255,.07); }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 28px; }
    .section-kicker { margin: 0 0 5px; color: var(--pink-soft); font-size: 12px; font-weight: 700; }
    h2 { margin: 0; font-size: 30px; line-height: 1.25; letter-spacing: 0; }
    .section-intro { max-width: 620px; margin: 11px 0 0; color: var(--muted); }
    h3 { margin: 0 0 8px; font-size: 18px; }
    .text-link { color: var(--pink-soft); text-decoration-thickness: 1px; text-underline-offset: 4px; }
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 38px; align-items: start; }
    .about-copy p { margin: 0 0 14px; color: #d5c8d9; }
    .feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 22px; margin: 20px 0 0; padding: 0; list-style: none; }
    .feature-list li { display: flex; gap: 10px; color: #e7ddea; font-size: 14px; }
    .feature-list li::before { content: "＋"; color: var(--pink-soft); font-weight: 800; }
    .platform-band { padding: 20px 22px; border-left: 3px solid var(--pink); background: rgba(255,255,255,.045); }
    .platform-band p { margin: 0; color: #d5c8d9; }
    .platform-band strong { color: var(--text); }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .service-item { min-width: 0; padding: 19px; border: 1px solid var(--line); border-radius: 7px; background: rgba(33,21,42,.72); transition: transform .22s, border-color .22s, background .22s; }
    .service-item:hover { transform: translateY(-3px); border-color: #a04f91; background: #281831; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-tag { display: inline-block; margin-bottom: 11px; color: var(--cyan); font-size: 11px; font-weight: 700; }
    .service-item h3 { font-size: 16px; }
    .service-more { margin-top: 20px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .workflow-step { position: relative; padding: 20px 22px 19px; border-top: 1px solid #714772; counter-increment: step; }
    .workflow-step::before { display: block; margin-bottom: 13px; color: var(--pink-soft); content: "0" counter(step); font-size: 13px; font-weight: 750; }
    .workflow-step:not(:last-child)::after { position: absolute; top: 26px; right: -4px; width: 7px; height: 7px; border-top: 1px solid var(--pink); border-right: 1px solid var(--pink); content: ""; transform: rotate(45deg); }
    .workflow-step p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .industry-item { padding: 18px 19px; border-bottom: 1px solid #633e65; background: linear-gradient(90deg, rgba(255,76,170,.08), transparent); }
    .industry-item p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
    .network { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; align-items: start; }
    .network-aside { padding: 23px; border: 1px solid #613c65; border-radius: 7px; background: rgba(255,255,255,.035); }
    .network-aside p { margin: 9px 0 0; color: var(--muted); font-size: 14px; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .model-cloud span { padding: 7px 11px; border: 1px solid #513657; border-radius: 5px; color: #e9d9ee; background: #201429; font-size: 13px; }
    .network-links { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 18px; }
    .network-links a { color: var(--pink-soft); font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
    .case-item { overflow: hidden; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); }
    .media-wrap { overflow: hidden; aspect-ratio: 16 / 9; background: #23162d; }
    .media-wrap.square { aspect-ratio: 1 / 1; }
    .ai-page-image { display: block; width: 100%; max-width: 100%; height: auto; }
    .media-wrap img { width: 100%; height: 100%; object-fit: cover; }
    .case-copy { padding: 16px 17px 18px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 7px; }
    table { width: 100%; min-width: 680px; border-collapse: collapse; background: rgba(33,21,42,.75); }
    th, td { padding: 14px 15px; border-bottom: 1px solid rgba(255,255,255,.09); text-align: left; font-size: 13px; }
    th { color: #f2dff1; background: #2b1934; }
    td { color: #d5c8d9; }
    tr:last-child td { border-bottom: 0; }
    td:first-child { color: var(--text); font-weight: 650; }
    .rating-box { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-bottom: 20px; padding: 17px 20px; border-left: 3px solid var(--pink); background: rgba(255,76,170,.08); }
    .rating-score { color: var(--pink-soft); font-size: 27px; font-weight: 800; }
    .rating-stars { color: #ffd166; font-size: 18px; letter-spacing: 0; }
    .rating-box p { margin: 0; color: var(--muted); font-size: 13px; }
    .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .review { padding: 18px; border-top: 2px solid #68406a; background: rgba(255,255,255,.035); }
    .review blockquote { margin: 0; color: #e2d6e5; font-size: 14px; }
    .review footer { margin-top: 15px; color: var(--pink-soft); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 16px 38px 16px 0; color: #f0e6f2; font-weight: 650; cursor: pointer; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; top: 15px; right: 5px; color: var(--pink-soft); content: "+"; font-size: 22px; line-height: 1; transition: transform .2s; }
    details[open] summary::after { transform: rotate(45deg); }
    details p { max-width: 820px; margin: 0; padding: 0 0 17px; color: var(--muted); font-size: 14px; }
    .article-row { display: grid; grid-template-columns: 1fr auto; gap: 20px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
    .article-row a { color: #eee3f0; text-decoration: none; }
    .article-row a:hover { color: var(--pink-soft); }
    .article-row span { color: var(--muted); font-size: 12px; }
    .news-note { margin: 13px 0 0; color: var(--muted); font-size: 12px; }
    .form-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .contact-copy p { color: var(--muted); }
    .contact-line { margin: 9px 0; color: #e5d9e8; font-size: 14px; }
    .contact-line a { color: var(--pink-soft); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #e7dbea; font-size: 13px; font-weight: 600; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #563b5d; border-radius: 5px; outline: none; color: var(--text); background: #1a1021; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--pink); box-shadow: 0 0 0 3px rgba(255,76,170,.12); }
    .field select option { color: var(--text); background: #1a1021; }
    .field textarea { min-height: 112px; resize: vertical; }
    .form-submit { margin-top: 15px; }
    .join-band { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 24px 0 4px; }
    .join-band p { margin: 5px 0 0; color: var(--muted); }
    .site-footer { padding-block: 28px; color: #d9cddd; background: #0d0812; }
    .footer-top { display: flex; justify-content: space-between; gap: 25px; align-items: start; }
    .footer-brand { font-weight: 750; }
    .footer-copy { max-width: 490px; margin: 7px 0 0; color: #b8a9bd; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 16px; max-width: 600px; }
    .footer-links a { color: #d7c8db; font-size: 12px; text-decoration: none; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 15px; margin-top: 20px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,.1); color: #a99aad; font-size: 12px; }
    .floating-contact { position: fixed; z-index: 15; right: 18px; bottom: 18px; display: grid; gap: 8px; }
    .floating-contact a { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid #785078; border-radius: 50%; color: var(--text); background: #281931; box-shadow: 0 6px 22px rgba(0,0,0,.3); text-decoration: none; font-size: 12px; }
    .floating-contact a:first-child { color: #180c18; background: var(--pink); border-color: var(--pink); font-weight: 800; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @keyframes rise-in { from { opacity: 0; transform: translateY(12px); } to { 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-links { display: none; position: absolute; top: 72px; left: 0; right: 0; padding: 12px 20px 18px; border-bottom: 1px solid var(--line); background: #160e1e; }
      .nav-links.open { display: grid; grid-template-columns: repeat(3, 1fr); }
      .nav-links a { padding: 10px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-actions .button { display: none; }
      .hero-inner { gap: 30px; }
    }
    @media (max-width: 720px) {
      .container { width: min(var(--content), calc(100% - 32px)); }
      .hero-inner { grid-template-columns: 1fr; padding-block: 52px 38px; }
      h1 { font-size: 42px; }
      .hero-copy { font-size: 15px; }
      .signal-board { max-width: 500px; }
      .metric-strip { grid-template-columns: repeat(2, 1fr); }
      .metric { padding: 15px; }
      section.content-section { padding-block: 48px; }
      .section-head { display: block; }
      h2 { font-size: 26px; }
      .about-grid, .network, .form-layout { grid-template-columns: 1fr; gap: 22px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .industry-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .workflow-step:nth-child(2)::after { display: none; }
      .case-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .join-band { align-items: start; flex-direction: column; }
      .footer-top { flex-direction: column; }
      .footer-links { justify-content: flex-start; }
      .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 480px) {
      .brand-name { font-size: 15px; }
      .ai-page-logo { width: 32px; }
      .nav-links.open { grid-template-columns: repeat(2, 1fr); }
      .nav-actions { gap: 7px; }
      .hero-actions .button { width: 100%; }
      .service-grid, .industry-grid, .case-grid, .reviews-grid, .feature-list { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .floating-contact { right: 10px; bottom: 10px; }
    }