:root {
      color-scheme: light;
      --ink: #29221f;
      --muted: #716763;
      --red: #c92d27;
      --red-deep: #9f201d;
      --coral: #f16b50;
      --pink: #fff0eb;
      --paper: #fffaf8;
      --white: #fff;
      --line: #eadbd5;
      --green: #216b56;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    img { max-width: 100%; height: auto; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,250,248,.96);
      border-bottom: 1px solid rgba(234,219,213,.8);
      backdrop-filter: blur(12px);
    }
    .header-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .brand img { width: 38px; max-height: 38px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { color: #534943; padding: 8px 9px; font-size: 13px; text-decoration: none; border-radius: 4px; }
    .nav-links a:hover, .nav-links a:focus-visible { background: var(--pink); color: var(--red-deep); }
    .nav-cta, .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 19px; border: 1px solid var(--red);
      border-radius: 4px; background: var(--red); color: #fff; text-decoration: none;
      font-weight: 700; transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .nav-cta { white-space: nowrap; font-size: 13px; }
    .button:hover, .nav-cta:hover { background: var(--red-deep); box-shadow: 0 8px 20px rgba(159,32,29,.18); transform: translateY(-2px); }
    .button.secondary { background: transparent; color: var(--red-deep); }
    .button.secondary:hover { background: #fff0eb; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; background: var(--white); color: var(--ink); cursor: pointer; }
    .menu-toggle span, .menu-toggle::before, .menu-toggle::after { display: block; width: 18px; height: 2px; margin: 4px auto; background: currentColor; content: ""; }
    .hero { overflow: hidden; position: relative; padding: 82px 0 62px; background: #f7ded5; border-bottom: 1px solid #edc9bd; }
    .hero::before { position: absolute; inset: 0 0 0 56%; background: repeating-linear-gradient(135deg, transparent 0 24px, rgba(201,45,39,.075) 24px 25px); content: ""; pointer-events: none; }
    .hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .72fr); align-items: center; gap: 56px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--red-deep); font-size: 13px; font-weight: 800; letter-spacing: 0; }
    .eyebrow::before { width: 25px; height: 3px; background: var(--red); content: ""; }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 660px; margin: 18px 0; font-size: clamp(38px, 5.2vw, 66px); line-height: 1.14; letter-spacing: 0; }
    .hero-copy { max-width: 640px; color: #55433e; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero-note { margin-top: 19px; color: #65534e; font-size: 13px; }
    .hero-panel { position: relative; padding: 26px; border: 1px solid rgba(159,32,29,.22); background: rgba(255,250,248,.78); }
    .hero-panel h2 { margin: 0 0 18px; font-size: 17px; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-cloud span { padding: 6px 9px; border: 1px solid #e9c5ba; color: #762b25; background: #fff8f5; font-size: 12px; }
    .panel-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
    .panel-foot strong { color: var(--red-deep); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; padding: 22px 0; border-bottom: 1px solid var(--line); }
    .metric { padding: 8px 22px; border-right: 1px solid var(--line); }
    .metric:first-child { padding-left: 0; }
    .metric:last-child { border: 0; }
    .metric strong { display: block; color: var(--red-deep); font-size: 20px; }
    .metric span { color: var(--muted); font-size: 13px; }
    section.content-section { padding: 72px 0; }
    .section-heading { max-width: 730px; margin-bottom: 30px; }
    .section-heading h2 { margin: 10px 0 11px; font-size: clamp(27px, 3vw, 39px); line-height: 1.2; }
    .section-heading p { margin-bottom: 0; color: var(--muted); }
    .intro-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: start; }
    .intro-copy { color: #574d49; }
    .intro-copy p:last-child { margin-bottom: 0; }
    .highlight-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; border-top: 1px solid var(--line); }
    .highlight-item { padding: 15px 0; border-bottom: 1px solid var(--line); }
    .highlight-item strong { display: block; margin-bottom: 4px; }
    .highlight-item span { color: var(--muted); font-size: 13px; }
    .services-section { background: #fff3ef; border-block: 1px solid #f2ddd5; }
    .service-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
    .service-item { padding: 20px; background: var(--white); border-top: 3px solid var(--coral); }
    .service-item h3 { margin-bottom: 7px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-index { display: block; margin-bottom: 9px; color: var(--red); font-size: 12px; font-weight: 800; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .step { position: relative; padding: 20px 22px 18px 0; border-top: 1px solid var(--line); counter-increment: step; }
    .step::before { display: block; margin-bottom: 12px; color: var(--red); content: "0" counter(step); font-size: 13px; font-weight: 800; }
    .step h3 { margin-bottom: 6px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-band { background: #2f2724; color: #fff9f6; }
    .industry-band .section-heading p, .industry-band .eyebrow { color: #ffd1c4; }
    .industry-band .eyebrow::before { background: #ff9b7d; }
    .industry-list { display: flex; flex-wrap: wrap; gap: 10px; }
    .industry-list span { padding: 9px 13px; border: 1px solid #76534d; color: #fff4ef; font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; align-items: start; }
    .case-feature { padding: 26px; background: #f8e2da; }
    .case-feature h3 { margin: 8px 0; font-size: 22px; }
    .case-feature p { color: #594742; }
    .media-frame { margin: 18px 0; background: #f3e3dc; }
    .media-frame img { display: block; width: 100%; height: auto; }
    .case-side { display: grid; gap: 18px; }
    .case-side article { padding: 0 0 17px; border-bottom: 1px solid var(--line); }
    .case-side h3 { margin-bottom: 5px; font-size: 17px; }
    .case-side p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
    .review { padding: 18px; border: 1px solid var(--line); background: rgba(255,255,255,.64); }
    .review p { margin: 0 0 15px; color: #514641; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .rating-layout { display: grid; grid-template-columns: .65fr 1.35fr; gap: 34px; align-items: start; }
    .rating-score { padding: 24px; background: var(--red); color: #fff; }
    .rating-score strong { display: block; font-size: 50px; line-height: 1.1; }
    .rating-score span { display: block; margin-top: 8px; color: #ffe4dc; }
    .stars { color: #ffd77a; letter-spacing: 0; font-size: 20px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 620px; }
    th, td { padding: 13px 15px; border-bottom: 1px solid var(--line); text-align: left; font-size: 13px; }
    th { color: #4f3c37; background: #fff1eb; }
    td:last-child { color: var(--green); font-weight: 700; }
    .table-note { margin: 10px 0 0; color: var(--muted); font-size: 12px; }
    .token-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px; align-items: center; padding: 27px; background: #f7e7df; }
    .token-layout h3 { margin-bottom: 8px; font-size: 23px; }
    .token-layout p { margin-bottom: 0; color: #5f504a; }
    .token-points { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; }
    .token-points div { padding: 13px; background: #fffaf8; }
    .token-points strong { display: block; font-size: 14px; }
    .token-points span { color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 36px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; right: 4px; color: var(--red); content: "+"; font-size: 21px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 850px; margin: -3px 0 17px; color: var(--muted); font-size: 14px; }
    .articles { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 10px; }
    .article-link { display: flex; min-height: 78px; align-items: center; justify-content: space-between; gap: 10px; padding: 13px; border: 1px solid var(--line); background: #fff; text-decoration: none; font-size: 13px; }
    .article-link:hover { border-color: var(--coral); color: var(--red-deep); }
    .article-link span:last-child { color: var(--red); }
    .contact-section { background: #fff0eb; border-top: 1px solid #efd5cb; }
    .contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
    .contact-details p { color: #5e504b; }
    .contact-details a { color: var(--red-deep); }
    .contact-qr { width: 148px; padding: 6px; border: 1px solid var(--line); background: #fff; }
    .contact-qr img { display: block; width: 100%; height: auto; }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .field { display: grid; gap: 5px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 11px; border: 1px solid #d9c3ba; border-radius: 3px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 110px; resize: vertical; }
    .form-status { grid-column: 1 / -1; min-height: 20px; margin: 0; color: var(--green); font-size: 13px; }
    .footer { padding: 29px 0; background: #322925; color: #fff6f1; }
    .footer-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; }
    .footer p { margin: 7px 0 0; color: #e2d2cb; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 17px; max-width: 600px; }
    .footer-links a { color: #fff1eb; text-decoration: none; font-size: 13px; }
    .footer-links a:hover { color: #ffad96; }
    .copyright { margin-top: 18px; padding-top: 14px; border-top: 1px solid #574843; color: #ddccc4; font-size: 12px; }
    .floating-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .floating-contact a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid #a7211e; border-radius: 50%; background: var(--red); color: #fff; text-decoration: none; box-shadow: 0 5px 15px rgba(76,25,20,.2); font-size: 13px; font-weight: 800; }
    .to-top { opacity: 0; pointer-events: none; transition: opacity .2s ease; }
    .to-top.visible { opacity: 1; pointer-events: auto; }
    .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; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 980px) {
      .header-row { flex-wrap: wrap; padding: 12px 0; }
      .menu-toggle { display: block; margin-left: auto; }
      .nav-cta { order: 2; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; padding-top: 8px; border-top: 1px solid var(--line); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 8px 10px; }
      .hero-grid { gap: 28px; }
      .articles { grid-template-columns: repeat(3, minmax(0,1fr)); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero { padding: 58px 0 38px; }
      .hero-grid, .intro-layout, .case-grid, .rating-layout, .token-layout, .contact-layout { grid-template-columns: 1fr; }
      .hero-grid { gap: 28px; }
      .hero-copy { font-size: 16px; }
      .metrics { grid-template-columns: 1fr 1fr; row-gap: 14px; }
      .metric { padding: 7px 12px; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(3) { padding-left: 0; }
      section.content-section { padding: 52px 0; }
      .service-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .step { padding-right: 12px; }
      .highlight-list { grid-template-columns: 1fr; }
      .articles { grid-template-columns: 1fr 1fr; }
      .contact-layout { gap: 25px; }
      .footer-top { flex-direction: column; }
      .footer-links { justify-content: flex-start; }
    }
    @media (max-width: 440px) {
      .brand { font-size: 14px; }
      .brand img { width: 32px; max-height: 32px; }
      .nav-cta { min-height: 40px; padding: 8px 11px; font-size: 12px; }
      .hero-actions { align-items: stretch; }
      .hero-actions .button { flex: 1 1 100%; }
      .service-grid, .review-grid, .articles { grid-template-columns: 1fr; }
      .token-points { grid-template-columns: 1fr; }
      form { grid-template-columns: 1fr; }
      .field.full, .form-status { grid-column: auto; }
    }