:root {
      color-scheme: light;
      --ink: #211936;
      --muted: #6d667c;
      --purple: #6941d9;
      --purple-dark: #4825aa;
      --lavender: #eee8ff;
      --line: #e8e2f1;
      --paper: #ffffff;
      --page: #f8f6fc;
      --mint: #c9f2df;
      --container: 1160px;
      --shadow: 0 16px 44px rgba(57, 35, 105, .09);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 94px; }
    body {
      margin: 0;
      background:
        radial-gradient(ellipse at 82% 9%, rgba(221, 205, 255, .43), transparent 28rem),
        radial-gradient(ellipse at 10% 41%, rgba(239, 226, 255, .52), transparent 30rem),
        var(--page);
      color: var(--ink);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }

    a { color: inherit; text-decoration: none; }
    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(226, 219, 239, .8); background: rgba(250, 248, 253, .92); backdrop-filter: blur(16px); }
    .nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 18px; min-height: 76px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
    .ai-page-logo { display: block; max-width: 100%; height: auto; width: 42px; }
    .brand-name { font-size: 17px; font-weight: 800; letter-spacing: .02em; }
    .brand-note { display: block; margin-top: -3px; color: var(--muted); font-size: 10px; letter-spacing: .12em; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; color: #514960; font-size: 13px; }
    .nav-links a { border-radius: 999px; padding: 8px 10px; transition: color .2s ease, background .2s ease; }
    .nav-links a:hover { color: var(--purple-dark); background: #eee8fa; }
    .nav-actions { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
    .nav-toggle { display: none; border: 1px solid var(--line); border-radius: 12px; padding: 8px 11px; background: var(--paper); color: var(--ink); cursor: pointer; }
    .button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 0; border-radius: 13px; padding: 12px 19px; font-weight: 700; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .button:hover { transform: translateY(-2px); }
    .button-primary { background: linear-gradient(135deg, #7651e4, #552fc0); color: #fff; box-shadow: 0 9px 22px rgba(91, 53, 197, .22); }
    .button-primary:hover { box-shadow: 0 13px 28px rgba(91, 53, 197, .3); }
    .button-light { border: 1px solid #ddd3f1; background: #fff; color: var(--purple-dark); }
    .button-small { padding: 9px 14px; font-size: 13px; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 56px; }
    .hero::before, .hero::after { position: absolute; z-index: 0; border-radius: 50%; content: ""; pointer-events: none; }
    .hero::before { top: 58px; right: -96px; width: 360px; height: 360px; border: 1px solid rgba(122, 85, 223, .18); box-shadow: 0 0 0 30px rgba(121, 85, 220, .035), 0 0 0 68px rgba(121, 85, 220, .025); animation: orbit 16s linear infinite; }
    .hero::after { top: 116px; right: 68px; width: 12px; height: 12px; background: #a889ff; box-shadow: 0 0 28px 10px rgba(158, 128, 255, .28); }
    .hero-layout { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 58px; align-items: center; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; border: 1px solid #ded4f4; border-radius: 999px; padding: 7px 12px; background: rgba(255,255,255,.7); color: var(--purple-dark); font-size: 12px; font-weight: 700; }
    .eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: #7d56e8; box-shadow: 0 0 0 4px #eee8ff; }
    h1 { max-width: 720px; margin: 22px 0 16px; font-size: clamp(39px, 6vw, 67px); line-height: 1.1; letter-spacing: -.055em; }
    .hero h1 span { color: var(--purple); }
    .hero-copy { max-width: 650px; margin: 0; color: #625b70; font-size: 17px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
    .hero-footnote { margin-top: 18px; color: #777084; font-size: 12px; }
    .hero-panel { position: relative; border: 1px solid rgba(215, 204, 236, .9); border-radius: 26px; padding: 24px; background: linear-gradient(145deg, rgba(255,255,255,.95), rgba(243,238,255,.84)); box-shadow: var(--shadow); }
    .hero-panel::before { position: absolute; top: -11px; right: 28px; width: 58px; height: 22px; border-radius: 5px; background: var(--mint); content: ""; transform: rotate(4deg); }
    .panel-kicker { color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
    .panel-title { margin: 5px 0 18px; font-size: 20px; }
    .capability-list { display: grid; gap: 10px; }
    .capability-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid #ece6f3; padding: 10px 0; }
    .capability-row:last-child { border-bottom: 0; }
    .capability-label { font-size: 14px; font-weight: 700; }
    .capability-tag { border-radius: 999px; padding: 4px 9px; background: #eee8ff; color: #5530b6; font-size: 11px; white-space: nowrap; }
    .section { padding: 66px 0; }
    .section-tight { padding: 42px 0; }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 27px; }
    .section-heading p { max-width: 580px; margin: 0; color: var(--muted); }
    .section-label { margin: 0 0 8px; color: var(--purple); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 38px); line-height: 1.2; letter-spacing: -.035em; }
    h3 { margin: 0; font-size: 18px; line-height: 1.35; }
    .about-band { display: grid; grid-template-columns: .86fr 1.14fr; gap: 30px; align-items: center; border: 1px solid #e5ddf1; border-radius: 24px; padding: clamp(22px, 4vw, 38px); background: linear-gradient(125deg, #fff, #f1ecff); }
    .about-copy { color: #615a70; }
    .about-copy p { margin: 13px 0 0; }
    .feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; }
    .feature-tile { border: 1px solid #e8e2f0; border-radius: 17px; padding: 18px; background: rgba(255,255,255,.82); }
    .feature-tile strong { display: block; margin-bottom: 5px; font-size: 15px; }
    .feature-tile span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
    .service-card { min-height: 172px; border: 1px solid #e8e2f0; border-radius: 18px; padding: 19px; background: #fff; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
    .service-card:hover { transform: translateY(-4px); border-color: #c8b8ed; box-shadow: var(--shadow); }
    .service-icon { display: grid; width: 38px; height: 38px; place-items: center; margin-bottom: 13px; border-radius: 12px; background: #eee8ff; color: #5936bc; font-size: 13px; font-weight: 800; }
    .service-card p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
    .workflow-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid #e6def1; border-radius: 22px; overflow: hidden; background: #fff; }
    .workflow-step { position: relative; padding: 25px 22px; }
    .workflow-step + .workflow-step { border-left: 1px solid #eee8f4; }
    .step-number { display: inline-grid; width: 30px; height: 30px; place-items: center; margin-bottom: 14px; border-radius: 50%; background: #6d49d4; color: #fff; font-size: 12px; font-weight: 800; }
    .workflow-step p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
    .pill-row { display: flex; flex-wrap: wrap; gap: 9px; }
    .pill { border: 1px solid #e1d9ed; border-radius: 999px; padding: 8px 13px; background: rgba(255,255,255,.75); color: #514761; font-size: 13px; }
    .industry-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .industry-panel { border-radius: 22px; padding: 25px; background: #fff; box-shadow: 0 8px 30px rgba(59, 38, 99, .055); }
    .industry-panel p { margin: 9px 0 17px; color: var(--muted); }
    .industry-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .industry-list span { border-radius: 8px; padding: 6px 9px; background: #f3eff9; color: #514761; font-size: 12px; }
    .network-band { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; border: 1px solid #dcd1f0; border-radius: 22px; padding: 24px 28px; background: linear-gradient(115deg, #eee8ff, #fff 75%); }
    .network-band p { margin: 8px 0 0; color: var(--muted); }
    .network-mark { display: grid; width: 68px; height: 68px; place-items: center; border: 1px solid #d7c9f0; border-radius: 22px; background: #fff; color: var(--purple); font-size: 24px; font-weight: 900; transform: rotate(-6deg); }
    .case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
    .case-card { overflow: hidden; border: 1px solid #e6dfee; border-radius: 19px; background: #fff; }
    .image-frame { overflow: hidden; background: #eee9f5; }
    .image-frame img { display: block; width: 100%; height: auto; }
    .case-body { padding: 17px 18px 19px; }
    .case-body p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
    .case-kicker { display: inline-block; margin-bottom: 8px; color: var(--purple); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
    .score-panel { display: grid; grid-template-columns: .76fr 1.24fr; gap: 28px; align-items: center; border-radius: 24px; padding: 28px; background: #261b3d; color: #fff; }
    .score-panel .section-label { color: #c6b4ff; }
    .score-intro p { margin: 10px 0 0; color: #d4cce1; }
    .score-box { display: flex; align-items: center; gap: 20px; border: 1px solid rgba(255,255,255,.16); border-radius: 18px; padding: 20px; background: rgba(255,255,255,.07); }
    .score-number { color: #fff; font-size: 46px; font-weight: 850; line-height: 1; letter-spacing: -.05em; white-space: nowrap; }
    .score-number small { color: #cfc6de; font-size: 16px; font-weight: 500; }
    .stars { color: #ffdb7d; font-size: 18px; letter-spacing: .13em; }
    .score-caption { margin-top: 5px; color: #d7cfe2; font-size: 12px; }
    .table-wrap { overflow-x: auto; margin-top: 20px; border: 1px solid #e6dfed; border-radius: 18px; background: #fff; }
    table { width: 100%; min-width: 660px; border-collapse: collapse; text-align: left; }
    th, td { border-bottom: 1px solid #eee9f2; padding: 14px 17px; vertical-align: top; }
    th { background: #f5f1fb; color: #3a2c54; font-size: 13px; }
    td { color: #625b70; font-size: 13px; }
    tr:last-child td { border-bottom: 0; }
    .table-highlight { color: #5431b4; font-weight: 700; }
    .review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
    .review-card { border: 1px solid #e8e2ef; border-radius: 17px; padding: 19px; background: #fff; }
    .review-card p { margin: 0; color: #514a60; font-size: 14px; }
    .review-role { display: block; margin-top: 15px; color: var(--purple-dark); font-size: 12px; font-weight: 800; }
    .review-note { margin: 14px 0 0; color: #817a8c; font-size: 11px; }
    .price-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; align-items: stretch; }
    .price-card { border: 1px solid #e4ddef; border-radius: 21px; padding: 24px; background: #fff; }
    .price-card p { color: var(--muted); }
    .price-card ul { display: grid; gap: 9px; margin: 15px 0 0; padding-left: 19px; color: #585165; font-size: 14px; }
    .price-note { border-radius: 21px; padding: 24px; background: #e9e3f6; }
    .price-note p { margin: 10px 0 0; color: #5e566b; }
    .timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
    .timeline-item { border-top: 2px solid #c9b8ee; padding: 16px 4px 0; }
    .timeline-item strong { display: block; font-size: 14px; }
    .timeline-item p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; }
    .faq-list details { border: 1px solid #e6dfed; border-radius: 14px; padding: 15px 17px; background: rgba(255,255,255,.9); }
    .faq-list summary { position: relative; padding-right: 25px; font-weight: 700; cursor: pointer; list-style: none; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { position: absolute; top: 0; right: 0; color: var(--purple); content: "+"; font-size: 20px; line-height: 1; }
    .faq-list details[open] summary::after { content: "−"; }
    .faq-list details p { margin: 10px 0 0; color: var(--muted); font-size: 13px; }
    .resource-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 20px; }
    .resource-panel { border: 1px solid #e5deed; border-radius: 20px; padding: 22px; background: #fff; }
    .resource-panel p { color: var(--muted); }
    .article-links { display: grid; gap: 8px; margin-top: 14px; }
    .article-links a { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-bottom: 1px solid #eee9f2; padding: 10px 0; color: #4b3b69; font-size: 13px; }
    .article-links a:last-child { border-bottom: 0; }
    .article-links a:hover { color: var(--purple); }
    .contact-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 22px; align-items: start; }
    .contact-panel { border-radius: 22px; padding: 25px; background: #2a203f; color: #fff; }
    .contact-panel h3 { font-size: 21px; }
    .contact-panel p { color: #d5cde1; }
    .contact-details { display: grid; gap: 8px; margin-top: 18px; color: #f2eef7; font-size: 14px; }
    .contact-qr { width: 136px; margin-top: 19px; border: 7px solid #fff; border-radius: 12px; background: #fff; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; border: 1px solid #e4ddef; border-radius: 22px; padding: 24px; background: #fff; }
    .form-field { display: grid; gap: 6px; }
    .form-field.full { grid-column: 1 / -1; }
    .form-field label { color: #4c455b; font-size: 13px; font-weight: 700; }
    .form-field input, .form-field select, .form-field textarea { width: 100%; border: 1px solid #ddd6e8; border-radius: 11px; padding: 11px 12px; outline: none; background: #fcfbfe; color: var(--ink); }
    .form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: #9477dc; box-shadow: 0 0 0 3px rgba(121, 85, 220, .12); }
    .form-field textarea { min-height: 112px; resize: vertical; }
    .form-submit { grid-column: 1 / -1; justify-self: start; }
    .partner-band { display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 1px solid #ddd3ee; border-radius: 20px; padding: 21px 24px; background: #f0ebf9; }
    .partner-band p { margin: 6px 0 0; color: var(--muted); }
    .footer { margin-top: 30px; border-top: 1px solid #e4deeb; background: #f0edf5; color: #302940; }
    .footer-main { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 27px 0 20px; }
    .footer p { margin: 8px 0 0; color: #625b6d; font-size: 13px; }
    .footer-links { display: flex; align-items: flex-start; justify-content: flex-end; flex-wrap: wrap; gap: 9px 16px; }
    .footer-links a { color: #514462; font-size: 12px; }
    .footer-links a:hover { color: var(--purple-dark); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 14px; border-top: 1px solid #ded8e6; padding: 12px 0 16px; color: #716a7d; font-size: 11px; }
    .floating-help { position: fixed; z-index: 15; right: 20px; bottom: 20px; display: flex; align-items: center; gap: 8px; border: 1px solid #dcd1f0; border-radius: 999px; padding: 11px 15px; background: #fff; color: #4d2ba7; box-shadow: 0 8px 26px rgba(48, 33, 79, .16); font-size: 13px; font-weight: 800; transition: transform .2s ease; }
    .floating-help:hover { transform: translateY(-3px); }
    .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes orbit { to { transform: rotate(360deg); } }
    @media (max-width: 1040px) {
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-actions .button { padding: 9px 12px; font-size: 12px; }
      .service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
      .hero-layout { gap: 34px; }
    }
    @media (max-width: 820px) {
      .nav-wrap { min-height: 68px; }
      .nav-toggle { display: inline-flex; }
      .nav-links { position: absolute; top: calc(100% + 1px); right: 20px; left: 20px; display: none; align-items: stretch; justify-content: flex-start; border: 1px solid var(--line); border-radius: 16px; padding: 10px; background: #fff; box-shadow: var(--shadow); }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px 12px; font-size: 14px; }
      .nav-actions .button { display: none; }
      .hero { padding-top: 55px; }
      .hero-layout, .about-band, .score-panel, .price-layout, .resource-grid, .contact-layout { grid-template-columns: 1fr; }
      .hero-panel { max-width: 560px; }
      .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .review-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (max-width: 600px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero { padding: 42px 0 35px; }
      .hero::before { top: 108px; right: -245px; }
      .hero-copy { font-size: 15px; }
      .hero-actions { align-items: stretch; }
      .hero-actions .button { flex: 1; padding-inline: 12px; }
      .section { padding: 48px 0; }
      .section-tight { padding: 30px 0; }
      .section-heading { display: block; }
      .section-heading p { margin-top: 10px; }
      .feature-grid, .service-grid, .industry-layout, .workflow-strip, .case-grid, .review-grid, .faq-list, .timeline { grid-template-columns: 1fr; }
      .workflow-step + .workflow-step { border-top: 1px solid #eee8f4; border-left: 0; }
      .workflow-step { padding: 19px; }
      .network-band { grid-template-columns: 1fr; }
      .network-mark { display: none; }
      .score-box { align-items: flex-start; flex-direction: column; }
      .contact-form { grid-template-columns: 1fr; padding: 18px; }
      .form-field.full, .form-submit { grid-column: auto; }
      .partner-band { align-items: flex-start; flex-direction: column; }
      .footer-main { grid-template-columns: 1fr; }
      .footer-links { justify-content: flex-start; }
      .footer-bottom { flex-direction: column; }
      .floating-help { right: 12px; bottom: 12px; }
    }
    @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; }
    }