:root {
      color-scheme: light;
      --ink: #292321;
      --muted: #706560;
      --red: #d52c32;
      --red-dark: #a91f27;
      --coral: #f16d52;
      --peach: #fff0e9;
      --paper: #fffaf7;
      --line: #eadbd4;
      --green: #286b56;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: -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%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,250,247,.96);
      border-bottom: 1px solid rgba(234,219,212,.85);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .ai-page-logo { width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-size: 18px; font-weight: 800; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; color: #504641; font-size: 13px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--red); }
    .nav-links .nav-cta { padding: 10px 17px; margin-left: 8px; border-radius: 5px; color: #fff; background: var(--red); font-weight: 700; }
    .nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); cursor: pointer; }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 76px 0 58px;
      background: linear-gradient(115deg, #fff5ef 0%, #fff9f4 54%, #ffe5da 100%);
      border-bottom: 1px solid #f0d8ce;
    }
    .hero::before {
      content: "";
      position: absolute;
      right: -115px;
      top: -150px;
      width: 470px;
      aspect-ratio: 1;
      border: 1px solid rgba(213,44,50,.16);
      border-radius: 50%;
      box-shadow: 0 0 0 45px rgba(213,44,50,.035), 0 0 0 90px rgba(213,44,50,.025);
      pointer-events: none;
    }
    .hero::after {
      content: "";
      position: absolute;
      right: 12%;
      bottom: -80px;
      width: 260px;
      height: 150px;
      background: repeating-linear-gradient(135deg, transparent 0 12px, rgba(213,44,50,.08) 12px 13px);
      transform: skewX(-25deg);
      pointer-events: none;
    }
    .hero-inner { position: relative; z-index: 1; max-width: 780px; animation: rise .7s ease both; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--red-dark); font-size: 13px; font-weight: 800; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--red); }
    h1 { max-width: 720px; margin: 17px 0 18px; font-size: clamp(38px, 6vw, 66px); line-height: 1.13; letter-spacing: 0; }
    .hero h1 span { color: var(--red); }
    .hero-copy { max-width: 660px; color: #5f514b; font-size: 17px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
    .button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 21px; border: 1px solid transparent; border-radius: 5px; font-weight: 750; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .button:hover { transform: translateY(-2px); }
    .button-primary { color: #fff; background: var(--red); box-shadow: 0 8px 20px rgba(213,44,50,.18); }
    .button-primary:hover { background: var(--red-dark); }
    .button-secondary { color: var(--red-dark); background: #fff; border-color: #e9b5a8; }
    .hero-note { margin-top: 20px; color: #76655d; font-size: 13px; }
    .hero-note strong { color: var(--green); }
    .metric-strip { background: #fff; border-bottom: 1px solid var(--line); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); }
    .metric { padding: 22px 18px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--red-dark); font-size: 22px; line-height: 1.2; }
    .metric span { color: var(--muted); font-size: 13px; }
    main { overflow: hidden; }
    .section { padding: 76px 0; }
    .section-tint { background: #fff1eb; border-block: 1px solid #f1ded5; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 30px; }
    .section-kicker { color: var(--red); font-size: 12px; font-weight: 800; text-transform: uppercase; }
    h2 { margin: 6px 0 0; font-size: clamp(27px, 4vw, 38px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { max-width: 540px; margin: 0; color: var(--muted); }
    .intro-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 42px; align-items: start; }
    .intro-copy { max-width: 680px; color: #514843; }
    .intro-copy p { margin: 0 0 15px; }
    .capability-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 22px; margin: 22px 0 0; padding: 0; list-style: none; }
    .capability-list li { padding: 11px 0; border-bottom: 1px solid var(--line); color: #403833; }
    .capability-list li::before { content: "✓"; margin-right: 9px; color: var(--red); font-weight: 900; }
    .model-panel { padding: 25px; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--red); }
    .model-panel h3 { margin: 0 0 10px; font-size: 19px; }
    .model-panel p { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
    .tag-cloud { display: flex; gap: 8px; flex-wrap: wrap; }
    .tag-cloud span { padding: 6px 9px; color: #57423a; background: #fff4ef; border: 1px solid #f1ded5; font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
    .service-item { min-height: 158px; padding: 21px; border: 1px solid var(--line); background: #fff; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
    .service-item:hover { transform: translateY(-4px); border-color: #e8a49a; box-shadow: 0 12px 26px rgba(85,43,33,.08); }
    .service-item .number { color: var(--coral); font-size: 12px; font-weight: 800; }
    .service-item h3 { margin: 7px 0; font-size: 18px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-more { margin-top: 21px; color: var(--muted); font-size: 14px; }
    .service-more strong { color: var(--ink); }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .step { position: relative; padding: 0 20px 0 0; counter-increment: step; }
    .step:not(:last-child)::after { content: ""; position: absolute; left: 42px; right: 12px; top: 19px; border-top: 1px solid #e3b3a4; }
    .step-mark { position: relative; z-index: 1; display: grid; place-items: center; width: 40px; aspect-ratio: 1; color: #fff; background: var(--red); border: 5px solid #ffe6dc; border-radius: 50%; font-size: 12px; font-weight: 800; }
    .step h3 { margin: 15px 0 6px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .industries { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; }
    .industry-copy { max-width: 520px; }
    .industry-copy p { color: var(--muted); }
    .industry-lines { border-top: 1px solid var(--line); }
    .industry-line { display: flex; justify-content: space-between; gap: 18px; padding: 13px 0; border-bottom: 1px solid var(--line); }
    .industry-line strong { font-size: 14px; }
    .industry-line span { color: var(--muted); text-align: right; font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .case-card { background: #fff; border: 1px solid var(--line); }
    .case-image { overflow: hidden; aspect-ratio: 16 / 9; background: #f4e5df; }
    .case-image img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 16px 18px 19px; }
    .case-body span { color: var(--red); font-size: 12px; font-weight: 800; }
    .case-body h3 { margin: 5px 0; font-size: 17px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 19px; border-left: 3px solid var(--coral); background: #fff; }
    .review p { margin: 0 0 14px; color: #514843; 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: .72fr 1.28fr; gap: 36px; align-items: start; }
    .rating-score { padding: 24px; color: #fff; background: var(--red-dark); }
    .rating-score .score { font-size: 58px; font-weight: 850; line-height: 1; }
    .rating-score .out-of { color: #ffe3d8; font-size: 15px; }
    .stars { margin: 13px 0 8px; color: #ffd37b; font-size: 24px; letter-spacing: 0; }
    .rating-score p { margin: 0; color: #ffe9e0; font-size: 14px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    .comparison { width: 100%; border-collapse: collapse; min-width: 640px; text-align: left; }
    .comparison th, .comparison td { padding: 12px 14px; border-bottom: 1px solid #eee2dc; font-size: 13px; }
    .comparison th { color: #fff; background: #4c3a35; }
    .comparison th:nth-child(2) { background: var(--red); }
    .comparison td:first-child { font-weight: 700; }
    .comparison td:nth-child(2) { color: var(--red-dark); font-weight: 750; }
    .comparison tr:last-child td { border-bottom: 0; }
    .match-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 34px; align-items: start; }
    .match-copy p { color: var(--muted); }
    .benefit-list { padding-left: 19px; color: #514843; }
    .benefit-list li { margin: 8px 0; }
    .form-box { padding: 24px; background: #fff; border: 1px solid var(--line); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .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; color: var(--ink); background: #fffdfb; border: 1px solid #d9c8c0; border-radius: 3px; outline: none; }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(213,44,50,.1); }
    .form-submit { margin-top: 15px; border: 0; cursor: pointer; }
    .form-note { margin: 10px 0 0; color: var(--muted); font-size: 12px; }
    .resource-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
    .resource-column h3 { margin: 0 0 12px; font-size: 19px; }
    .article-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
    .article-list li { border-bottom: 1px solid var(--line); }
    .article-list a { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; color: #514843; font-size: 14px; }
    .article-list a:hover { color: var(--red); }
    .article-list span { color: var(--red); font-size: 12px; white-space: nowrap; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 36px 17px 0; cursor: pointer; font-weight: 750; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 5px; top: 13px; color: var(--red); font-size: 22px; font-weight: 400; transition: transform .2s ease; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { max-width: 850px; margin: 0; padding: 0 30px 17px 0; color: var(--muted); font-size: 14px; }
    .contact-band { padding: 29px; color: #fff; background: #a91f27; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .contact-band h2 { margin: 0; font-size: 25px; }
    .contact-band p { margin: 5px 0 0; color: #ffe2d8; font-size: 14px; }
    .contact-band .button { color: var(--red-dark); background: #fff; flex: 0 0 auto; }
    footer { padding: 30px 0 24px; color: #473b36; background: #f7e9e2; border-top: 1px solid #ead4ca; }
    .footer-top { display: flex; justify-content: space-between; gap: 26px; align-items: start; }
    .footer-brand p { max-width: 470px; margin: 10px 0 0; color: #695c56; font-size: 13px; }
    .footer-meta { display: flex; gap: 18px; flex-wrap: wrap; color: #514843; font-size: 13px; }
    .footer-meta a:hover, .friend-links a:hover { color: var(--red); }
    .friend-links { display: flex; gap: 8px 16px; flex-wrap: wrap; margin-top: 22px; padding-top: 17px; border-top: 1px solid #dfcbc1; font-size: 12px; }
    .friend-links strong { color: #473b36; }
    .copyright { margin: 16px 0 0; color: #756760; font-size: 12px; }
    .float-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; }
    .float-contact a { display: inline-flex; align-items: center; gap: 8px; padding: 12px 15px; color: #fff; background: var(--red); border-radius: 4px; box-shadow: 0 8px 24px rgba(87,31,24,.22); font-size: 13px; font-weight: 750; }
    .float-contact a:hover { background: var(--red-dark); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes rise { from { opacity: 0; transform: translateY(13px); } to { opacity: 1; transform: translateY(0); } }
    @media (max-width: 980px) {
      .nav-row { min-height: 68px; }
      .nav-toggle { display: inline-grid; place-items: center; }
      .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 10px 20px 18px; align-items: stretch; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 12px 20px rgba(65,38,30,.08); }
      .nav-links.is-open { display: flex; flex-direction: column; }
      .nav-links a { padding: 10px 0; }
      .nav-links .nav-cta { margin: 5px 0 0; text-align: center; }
      .intro-grid, .match-section, .rating-layout { grid-template-columns: 1fr; }
      .case-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 58px 0 42px; }
      .hero-copy { font-size: 15px; }
      .metrics { grid-template-columns: repeat(2, 1fr); }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .section { padding: 54px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 12px; }
      .capability-list, .service-grid, .review-grid, .resource-grid, .industries { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr 1fr; row-gap: 28px; }
      .step:nth-child(2)::after { display: none; }
      .case-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .contact-band, .footer-top { align-items: flex-start; flex-direction: column; }
      .contact-band h2 { font-size: 22px; }
      .float-contact { right: 12px; bottom: 12px; }
      .float-contact a { padding: 11px 13px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }