:root {
      color-scheme: light;
      --ink: #173331;
      --muted: #5e7773;
      --teal: #087f75;
      --teal-dark: #075d57;
      --mint: #dff4ed;
      --paper: #f5fbf9;
      --line: #d9eae5;
      --white: #fff;
      --warm: #f4f0e6;
      --shadow: 0 18px 48px rgba(19, 74, 66, .09);
      --radius: 22px;
      --container: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background:
        radial-gradient(ellipse at 83% 4%, rgba(197, 241, 225, .53), transparent 29rem),
        linear-gradient(180deg, #f5fbf9 0%, #f8fbf7 50%, #f2f8f5 100%);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    img { max-width: 100%; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      border-bottom: 1px solid rgba(206, 228, 221, .78);
      background: rgba(248, 252, 250, .94);
      backdrop-filter: blur(14px);
    }
    .header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; flex: 0 0 auto; }
    .ai-page-logo { width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { display: grid; line-height: 1.2; }
    .brand-name strong { font-size: 16px; letter-spacing: .04em; }
    .brand-name span { margin-top: 4px; color: var(--muted); font-size: 10px; letter-spacing: .12em; }
    .nav-links { display: flex; align-items: center; gap: 0; }
    .nav-links a {
      padding: 10px 11px;
      color: #35534f;
      font-size: 13px;
      text-decoration: none;
      white-space: nowrap;
      border-radius: 999px;
      transition: color .2s ease, background .2s ease;
    }
    .nav-links a:hover, .nav-links a:focus-visible { color: var(--teal-dark); background: #e4f3ee; }
    .header-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 999px;
      background: var(--teal);
      color: #fff;
      font-weight: 700;
      text-decoration: none;
      box-shadow: 0 8px 20px rgba(8, 127, 117, .18);
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
      cursor: pointer;
    }
    .header-cta { min-height: 40px; padding-inline: 16px; font-size: 13px; flex: 0 0 auto; }
    .button:hover, .header-cta:hover { transform: translateY(-2px); background: var(--teal-dark); box-shadow: 0 12px 24px rgba(8, 127, 117, .24); }
    .button.secondary { background: #fff; color: var(--teal-dark); border-color: #bfded4; box-shadow: none; }
    .button.secondary:hover { background: #e6f5ef; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: #fff; border-radius: 12px; color: var(--ink); width: 42px; height: 42px; cursor: pointer; }
    .hero { padding: 78px 0 52px; overflow: hidden; }
    .hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(300px, .88fr); align-items: center; gap: 48px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--teal-dark); font-size: 12px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
    .eyebrow::before { content: ""; display: inline-block; width: 24px; height: 2px; background: #46aa91; }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 700px; margin: 18px 0 20px; font-size: clamp(38px, 5.2vw, 66px); line-height: 1.11; letter-spacing: -.055em; }
    .hero-copy { max-width: 630px; margin-bottom: 28px; color: #4d6863; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin: 16px 0 0; color: #647d77; font-size: 12px; }
    .hero-visual {
      position: relative;
      min-height: 365px;
      padding: 24px;
      border: 1px solid rgba(176, 218, 205, .8);
      border-radius: 34px;
      background:
        radial-gradient(circle at 74% 25%, rgba(112, 205, 170, .35), transparent 36%),
        linear-gradient(145deg, #e3f5ed, #f9fcf8 70%);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .hero-visual::before, .hero-visual::after { content: ""; position: absolute; border: 1px solid rgba(8, 127, 117, .15); border-radius: 50%; }
    .hero-visual::before { width: 300px; height: 300px; right: -105px; top: -115px; }
    .hero-visual::after { width: 230px; height: 230px; right: -70px; top: -80px; }
    .visual-top { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
    .visual-label { color: #45655d; font-size: 12px; font-weight: 700; }
    .live-pill { padding: 5px 10px; border-radius: 99px; background: #d5eee4; color: #136b5c; font-size: 11px; font-weight: 700; }
    .orbit { position: relative; display: grid; place-items: center; min-height: 230px; }
    .orbit-ring { position: absolute; width: 190px; aspect-ratio: 1; border: 1px solid rgba(9, 130, 117, .24); border-radius: 50%; animation: slow-spin 24s linear infinite; }
    .orbit-ring::before, .orbit-ring::after { content: ""; position: absolute; width: 11px; height: 11px; border-radius: 50%; background: #40ae8c; box-shadow: 0 0 0 6px rgba(64, 174, 140, .12); }
    .orbit-ring::before { left: 22px; top: 32px; }
    .orbit-ring::after { right: 12px; bottom: 42px; background: #83b99a; }
    .orbit-core { position: relative; display: grid; place-items: center; width: 116px; aspect-ratio: 1; border: 1px solid rgba(255,255,255,.9); border-radius: 34px; background: linear-gradient(145deg, #fff, #d7f1e5); color: var(--teal-dark); box-shadow: 0 16px 38px rgba(30, 113, 93, .18); font-size: 17px; font-weight: 800; }
    .orbit-core span { display: block; margin-top: -25px; font-size: 10px; font-weight: 600; color: var(--muted); }
    .orbit-node { position: absolute; display: grid; place-items: center; min-width: 76px; padding: 8px 12px; border: 1px solid #d5e9e0; border-radius: 14px; background: rgba(255,255,255,.9); box-shadow: 0 8px 20px rgba(19,74,66,.08); color: #315850; font-size: 12px; font-weight: 700; }
    .node-a { top: 20px; left: calc(50% - 35px); }
    .node-b { right: 2px; top: 92px; }
    .node-c { bottom: 16px; left: calc(50% - 42px); }
    .node-d { left: 1px; top: 94px; }
    .visual-foot { display: flex; flex-wrap: wrap; gap: 8px; }
    .visual-foot span { padding: 6px 10px; border: 1px solid #d6e9e0; border-radius: 999px; background: rgba(255,255,255,.64); color: #42635a; font-size: 11px; }
    .stats { padding: 0 0 56px; }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.76); }
    .stat { padding: 22px 24px; border-right: 1px solid var(--line); }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; color: var(--teal-dark); font-size: 19px; letter-spacing: -.02em; }
    .stat span { color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section.soft { background: rgba(230, 244, 238, .62); border-block: 1px solid rgba(210, 231, 222, .7); }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-heading h2 { margin: 8px 0 0; font-size: clamp(28px, 3.6vw, 42px); line-height: 1.2; letter-spacing: -.04em; }
    .section-heading p { max-width: 510px; margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 24px; align-items: stretch; }
    .intro-panel { padding: 30px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); box-shadow: 0 10px 30px rgba(19,74,66,.045); }
    .intro-panel h3 { margin-bottom: 12px; font-size: 22px; }
    .intro-panel p { margin-bottom: 0; color: var(--muted); }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .capability { padding: 17px; border-radius: 16px; background: #eff8f4; border: 1px solid #dfefe8; }
    .capability strong { display: block; margin-bottom: 4px; color: #20574d; font-size: 14px; }
    .capability span { color: #647d77; font-size: 12px; }
    .services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .service-group { padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.88); transition: transform .22s ease, box-shadow .22s ease; }
    .service-group:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .service-group h3 { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; font-size: 17px; }
    .service-index { display: inline-grid; place-items: center; width: 31px; height: 31px; border-radius: 10px; background: #dff3eb; color: var(--teal-dark); font-size: 12px; }
    .service-group ul { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
    .service-group li { color: #536d67; font-size: 13px; }
    .service-group li strong { color: #284b45; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; counter-reset: step; }
    .step { position: relative; padding: 22px; border-top: 2px solid #79bea5; background: rgba(255,255,255,.72); border-radius: 0 0 16px 16px; counter-increment: step; }
    .step::before { content: "0" counter(step); display: block; margin-bottom: 14px; color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
    .step h3 { margin-bottom: 7px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solutions-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .solution-panel { padding: 26px; border-radius: 22px; background: #fff; border: 1px solid var(--line); }
    .solution-panel h3 { margin-bottom: 8px; font-size: 19px; }
    .solution-panel > p { color: var(--muted); font-size: 13px; }
    .solution-tags, .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
    .solution-tags span, .model-cloud span { padding: 7px 11px; border-radius: 999px; background: #eff8f4; color: #315c52; border: 1px solid #dfefe8; font-size: 12px; }
    .model-cloud { gap: 9px; }
    .model-cloud span { background: rgba(255,255,255,.72); }
    .showcase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .showcase-card { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
    .showcase-card .media { padding: 10px; background: #eaf4ef; }
    .showcase-card img { display: block; width: 100%; height: auto; border-radius: 11px; }
    .showcase-card .showcase-copy { padding: 16px 18px 18px; }
    .showcase-copy h3 { margin-bottom: 5px; font-size: 16px; }
    .showcase-copy p { margin: 0; color: var(--muted); font-size: 12px; }
    .score-panel { display: grid; grid-template-columns: .78fr 1.22fr; gap: 24px; align-items: stretch; }
    .score-card { display: flex; flex-direction: column; justify-content: center; padding: 30px; border-radius: 22px; background: linear-gradient(145deg, #dff4e9, #f5faf5); border: 1px solid #cce8da; }
    .score-card .stars { color: #a87519; font-size: 20px; letter-spacing: .1em; }
    .score-card strong { margin: 8px 0 0; color: var(--teal-dark); font-size: 42px; line-height: 1.1; }
    .score-card span { color: #55716a; font-size: 13px; }
    .score-card p { margin: 13px 0 0; color: #5c756e; font-size: 12px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
    .comparison { width: 100%; min-width: 520px; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 13px 16px; border-bottom: 1px solid #e8f0ec; font-size: 13px; }
    .comparison th { background: #eef7f2; color: #294d45; }
    .comparison tr:last-child td { border-bottom: 0; }
    .comparison td:nth-child(2) { color: var(--teal-dark); font-weight: 700; }
    .token-box { display: flex; align-items: center; justify-content: space-between; gap: 22px; margin-top: 22px; padding: 20px 24px; border: 1px solid #d6e8df; border-radius: 18px; background: #eff8f4; }
    .token-box h3 { margin-bottom: 4px; font-size: 16px; }
    .token-box p { margin: 0; color: var(--muted); font-size: 12px; }
    .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 21px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.86); }
    .review p { margin-bottom: 14px; color: #415e57; font-size: 13px; }
    .review strong { display: block; color: #1f5147; font-size: 12px; }
    .review span { color: #7a918a; font-size: 11px; }
    .insight-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .insight-panel { padding: 25px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
    .insight-panel h3 { margin-bottom: 14px; font-size: 19px; }
    .article-list { display: grid; gap: 0; }
    .article-list a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 0; border-top: 1px solid #e7f0eb; color: #31574f; text-decoration: none; font-size: 13px; }
    .article-list a::after { content: "↗"; color: var(--teal); }
    .article-list a:hover { color: var(--teal); }
    .glossary { display: flex; flex-wrap: wrap; gap: 9px; }
    .glossary span { padding: 8px 11px; border: 1px solid #dcece4; border-radius: 12px; background: #f5faf7; color: #48655d; font-size: 12px; }
    .faq-list { display: grid; gap: 10px; max-width: 900px; margin-inline: auto; }
    .faq-list details { border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.86); }
    .faq-list summary { position: relative; padding: 17px 48px 17px 18px; color: #264b43; font-size: 14px; font-weight: 700; cursor: pointer; list-style: none; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: var(--teal); font-size: 22px; font-weight: 400; }
    .faq-list details[open] summary::after { content: "−"; }
    .faq-answer { padding: 0 18px 17px; color: var(--muted); font-size: 13px; }
    .faq-answer p { margin: 0; }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 26px; align-items: start; }
    .contact-info { padding: 28px; border-radius: 22px; background: #e5f3ed; border: 1px solid #cfe7dc; }
    .contact-info h3 { margin-bottom: 8px; font-size: 22px; }
    .contact-info > p { color: #58716a; font-size: 13px; }
    .contact-list { display: grid; gap: 11px; margin: 20px 0; }
    .contact-list div { color: #385d53; font-size: 13px; }
    .contact-list strong { display: inline-block; min-width: 88px; color: #214d43; }
    .qr-wrap { width: 138px; padding: 8px; border: 1px solid #d5e8de; border-radius: 14px; background: #fff; }
    .qr-wrap img { display: block; width: 100%; height: auto; border-radius: 7px; }
    .request-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: 0 12px 35px rgba(19,74,66,.05); }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #36564f; font-size: 12px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #d5e5de; border-radius: 10px; background: #fbfdfb; color: var(--ink); outline: none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: #5eae96; box-shadow: 0 0 0 3px rgba(54, 158, 127, .12); }
    .field textarea { min-height: 105px; resize: vertical; }
    .form-actions { grid-column: 1 / -1; display: flex; align-items: center; flex-wrap: wrap; gap: 13px; }
    .form-note { color: #71867f; font-size: 11px; }
    .partner-strip { padding-top: 28px; }
    .partner-strip h3 { margin-bottom: 12px; font-size: 15px; }
    .partner-links { display: flex; flex-wrap: wrap; gap: 10px 18px; }
    .partner-links a { color: #42675e; font-size: 12px; text-decoration-color: #b7d1c5; text-underline-offset: 4px; }
    .partner-links a:hover { color: var(--teal); }
    .site-footer { margin-top: 0; padding: 28px 0; border-top: 1px solid #d8e8e1; background: #eaf4ef; color: #35554c; }
    .footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
    .footer-inner p { margin: 0; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 12px; }
    .footer-links a { color: #35554c; font-size: 12px; text-decoration: none; }
    .footer-links a:hover { color: var(--teal); }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 9px; }
    .float-contact a { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 16px; background: var(--teal-dark); color: #fff; font-size: 12px; font-weight: 700; text-decoration: none; box-shadow: 0 8px 24px rgba(10, 84, 72, .24); transition: transform .2s ease; }
    .float-contact a:hover { transform: translateY(-3px); }
    .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @keyframes slow-spin { to { transform: rotate(360deg); } }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 980px) {
      .header-inner { flex-wrap: wrap; padding-block: 12px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .header-cta { display: none; }
      .nav-links { display: none; width: 100%; flex-wrap: wrap; padding: 5px 0 8px; }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 9px 13px; }
      .hero-grid { gap: 28px; grid-template-columns: 1.05fr .95fr; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 720px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 51px 0 36px; }
      .hero-grid, .intro-grid, .solutions-grid, .score-panel, .insight-grid, .contact-grid { grid-template-columns: 1fr; }
      .hero-visual { min-height: 330px; }
      .stats { padding-bottom: 38px; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .section { padding: 56px 0; }
      .section-heading { display: block; }
      .section-heading p { margin-top: 12px; }
      .services-grid, .showcase-grid, .reviews-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .token-box { align-items: flex-start; flex-direction: column; }
      .footer-inner { align-items: flex-start; flex-direction: column; }
      .request-form { padding: 19px; }
      .float-contact { right: 12px; bottom: 12px; }
    }
    @media (max-width: 460px) {
      h1 { font-size: 39px; }
      .capability-list, .workflow, .request-form { grid-template-columns: 1fr; }
      .field.full, .form-actions { grid-column: auto; }
      .hero-actions .button { width: 100%; }
      .nav-links a { font-size: 12px; }
    }