:root {
      color-scheme: light;
      --ink: #26221f;
      --muted: #706861;
      --paper: #fffaf6;
      --white: #ffffff;
      --line: #eaded4;
      --orange: #ed591e;
      --orange-dark: #bd3910;
      --orange-soft: #fff0e6;
      --green: #1b7166;
      --green-soft: #eaf5f1;
      --shadow: 0 16px 44px rgba(76, 40, 19, .08);
      --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; text-decoration: none; }
    img { max-width: 100%; height: auto; }
    button, input, select, textarea { font: inherit; }
    button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
    :focus-visible { outline: 3px solid #f2a47f; outline-offset: 3px; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 30; background: rgba(255,250,246,.96); border-bottom: 1px solid rgba(234,222,212,.85); backdrop-filter: blur(12px); }
    .nav-row { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; font-weight: 800; }
    .ai-page-logo { display: block; width: 40px; max-width:100%; height:auto; }
    .brand-name { line-height: 1.2; }
    .brand-name small { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 600; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; color: #514943; font-size: 13px; font-weight: 650; transition: color .2s, background .2s; }
    .nav-links a:hover { color: var(--orange-dark); background: var(--orange-soft); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 5px; padding: 12px 18px; color: #fff; background: var(--orange); font-weight: 750; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
    .nav-cta { flex: 0 0 auto; padding: 10px 15px; font-size: 13px; }
    .button:hover, .nav-cta:hover { background: var(--orange-dark); box-shadow: 0 8px 22px rgba(189,57,16,.2); transform: translateY(-2px); }
    .button.secondary { background: var(--white); color: var(--ink); border: 1px solid var(--line); }
    .button.secondary:hover { background: var(--orange-soft); border-color: #f1b99e; color: var(--orange-dark); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: var(--white); color: var(--ink); cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 54px; background: linear-gradient(115deg, #fff7ef 0%, #fffaf6 55%, #fff1e6 100%); border-bottom: 1px solid #f0e0d2; }
    .hero::before { content: ""; position: absolute; width: 420px; height: 420px; right: -100px; top: -180px; border: 1px solid rgba(237,89,30,.16); border-radius: 50%; box-shadow: 0 0 0 34px rgba(237,89,30,.035), 0 0 0 70px rgba(237,89,30,.025); }
    .hero::after { content: ""; position: absolute; right: 9%; bottom: 38px; width: 90px; height: 90px; border: 1px solid rgba(27,113,102,.24); transform: rotate(45deg); }
    .hero-inner { position: relative; z-index: 1; max-width: 850px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--orange-dark); font-size: 13px; font-weight: 800; }
    .eyebrow::before { content: ""; width: 22px; height: 3px; background: var(--orange); }
    h1 { max-width: 780px; margin: 16px 0 18px; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    .hero p { max-width: 700px; margin: 0; color: #5e554e; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero-notes { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 28px; color: #574e47; font-size: 13px; font-weight: 650; }
    .hero-notes span::before { content: "✓"; margin-right: 7px; color: var(--green); font-weight: 900; }
    .metrics { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 48px; border: 1px solid #efd9c9; background: rgba(255,255,255,.76); }
    .metric { padding: 18px 22px; border-right: 1px solid #efd9c9; }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--orange-dark); font-size: 19px; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section.tint { background: #fff3e9; border-block: 1px solid #f1e0d2; }
    .section.green-tint { background: #eff7f3; border-block: 1px solid #dcebe4; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 720px; }
    .kicker { display: block; margin-bottom: 8px; color: var(--orange-dark); font-size: 12px; font-weight: 800; }
    h2 { margin: 0; font-size: clamp(27px, 3vw, 38px); line-height: 1.25; letter-spacing: 0; }
    .section-head p { max-width: 540px; margin: 10px 0 0; color: var(--muted); }
    h3 { margin: 0 0 9px; font-size: 18px; line-height: 1.4; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: start; }
    .intro-copy p { color: #5f5751; margin: 0 0 16px; }
    .feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 22px; margin: 22px 0 0; padding: 0; list-style: none; }
    .feature-list li { padding: 12px 0; border-bottom: 1px solid var(--line); color: #4c4540; font-size: 14px; }
    .feature-list li strong { color: var(--ink); }
    .capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .capability { min-height: 172px; padding: 20px; border: 1px solid var(--line); background: var(--white); transition: transform .22s, box-shadow .22s, border-color .22s; }
    .capability:hover, .service:hover, .quote:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #f1b99e; }
    .cap-icon { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 15px; border-radius: 5px; background: var(--orange-soft); color: var(--orange-dark); font-size: 17px; font-weight: 850; }
    .capability p, .service p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service { padding: 20px; border: 1px solid var(--line); background: var(--white); transition: transform .22s, box-shadow .22s, border-color .22s; }
    .service h3 { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 16px; }
    .service small { color: var(--orange-dark); font-size: 11px; white-space: nowrap; }
    .service p { line-height: 1.75; }
    .service-link { display: inline-block; margin-top: 12px; color: var(--orange-dark); font-size: 13px; font-weight: 750; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid #e8c9b6; border-bottom: 1px solid #e8c9b6; }
    .step { position: relative; padding: 24px 22px; border-right: 1px solid #e8c9b6; }
    .step:last-child { border-right: 0; }
    .step-index { display: block; margin-bottom: 12px; color: var(--orange); font-size: 13px; font-weight: 850; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 28px; }
    .industry { padding: 20px 0; border-bottom: 1px solid #dfebe4; }
    .industry p { margin: 0; color: var(--muted); font-size: 14px; }
    .image-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: start; }
    .image-frame { overflow: hidden; margin: 0; border: 1px solid var(--line); background: var(--white); }
    .image-frame img { display: block; width: 100%; height: auto; }
    .image-frame figcaption { padding: 13px 15px; color: #4b433d; font-size: 13px; font-weight: 700; }
    .feature-banner { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
    .feature-banner figure { margin: 0; border: 1px solid var(--line); background: #fff; }
    .feature-banner img { display: block; width: 100%; }
    .feature-banner figcaption { padding: 13px 15px; color: #514942; font-size: 13px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--white); }
    .comparison { width: 100%; min-width: 760px; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 14px 16px; border-bottom: 1px solid #eee5de; vertical-align: top; }
    .comparison th { background: #fff0e6; color: #4f3123; font-size: 13px; }
    .comparison td { color: #554c46; font-size: 13px; }
    .comparison td:first-child { color: var(--ink); font-weight: 750; }
    .rating { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 18px; padding: 22px 24px; color: var(--ink); background: #fff0e6; border-left: 4px solid var(--orange); }
    .rating strong { color: var(--orange-dark); font-size: 30px; }
    .stars { color: #d94d18; letter-spacing: 0; font-size: 21px; }
    .network { display: flex; flex-wrap: wrap; gap: 9px; }
    .network span { padding: 7px 12px; border: 1px solid #cfe1d9; background: #fff; color: #3e655a; font-size: 13px; font-weight: 650; }
    .service-map { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
    .service-map p { color: var(--muted); }
    .contact-lines { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px; margin-top: 20px; }
    .contact-lines div { padding: 12px 0; border-bottom: 1px solid #dcebe4; }
    .contact-lines strong { display: block; font-size: 13px; }
    .contact-lines span, .contact-lines a { color: var(--muted); font-size: 14px; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .quote { padding: 20px; border: 1px solid var(--line); background: var(--white); transition: transform .22s, box-shadow .22s, border-color .22s; }
    .quote blockquote { margin: 0; color: #4f4842; font-size: 14px; }
    .quote figcaption { margin-top: 16px; color: var(--orange-dark); font-size: 12px; font-weight: 750; }
    .notice { margin: 0 0 18px; color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 38px 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; top: 13px; right: 5px; color: var(--orange-dark); font-size: 23px; font-weight: 500; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: 0 34px 18px 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-list a { display: flex; min-height: 84px; align-items: center; justify-content: space-between; gap: 10px; padding: 15px; border: 1px solid var(--line); background: #fff; color: #443c36; font-size: 13px; font-weight: 700; transition: border-color .2s, color .2s; }
    .article-list a:hover { border-color: var(--orange); color: var(--orange-dark); }
    .article-list a span { color: var(--orange); font-size: 17px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
    .tag-cloud span { padding: 6px 10px; border: 1px solid #f0d6c5; color: #765240; background: #fff9f5; font-size: 12px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .contact-copy p { color: var(--muted); }
    .contact-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .field { display: grid; 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-width: 0; padding: 11px 12px; border: 1px solid #d9cbc1; border-radius: 3px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .affiliate { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 23px 0; border-block: 1px solid var(--line); }
    .affiliate p { margin: 5px 0 0; color: var(--muted); }
    .links-inline { display: flex; flex-wrap: wrap; gap: 9px 18px; }
    .links-inline a { color: #57463b; font-size: 13px; }
    .links-inline a:hover { color: var(--orange-dark); }
    .site-footer { padding: 27px 0; background: #f4ebe4; color: #403832; border-top: 1px solid #e5d8cd; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .footer-row p { margin: 0; color: #665c55; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #51463f; font-size: 12px; }
    .float-contact { position: fixed; z-index: 25; right: 18px; bottom: 18px; display: grid; gap: 8px; }
    .float-contact a, .top-button { display: grid; place-items: center; min-width: 48px; min-height: 48px; padding: 8px; border: 1px solid #e6d6ca; border-radius: 5px; background: #fff; color: var(--orange-dark); box-shadow: 0 5px 18px rgba(60,37,23,.12); font-size: 12px; font-weight: 750; }
    .top-button { cursor: pointer; color: var(--ink); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .nav-row { flex-wrap: wrap; padding-block: 12px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-cta { order: 3; }
      .nav-links { display: none; order: 4; width: 100%; justify-content: flex-start; padding: 7px 0 3px; border-top: 1px solid var(--line); }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding-inline: 11px; }
      .capability-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 54px 0 38px; }
      .hero p { font-size: 15px; }
      .hero::after { right: 7%; bottom: 15px; width: 54px; height: 54px; }
      .metrics { grid-template-columns: repeat(2, 1fr); margin-top: 35px; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid #efd9c9; }
      .section { padding: 56px 0; }
      .section-head { display: block; }
      .section-head > .button { margin-top: 16px; }
      .intro-grid, .service-map, .contact-grid { grid-template-columns: 1fr; gap: 26px; }
      .feature-list { grid-template-columns: 1fr; }
      .service-grid, .industry-grid, .reviews { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .step:nth-child(2) { border-right: 0; }
      .step:nth-child(-n+2) { border-bottom: 1px solid #e8c9b6; }
      .image-grid { grid-template-columns: 1fr 1fr; }
      .image-grid figure:last-child { grid-column: 1 / -1; }
      .article-list { grid-template-columns: repeat(2, 1fr); }
      .affiliate, .footer-row { align-items: flex-start; flex-direction: column; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
    }
    @media (max-width: 460px) {
      .brand-name small { display: none; }
      .nav-cta { padding: 9px 11px; font-size: 12px; }
      .hero-actions .button { width: 100%; }
      .capability-grid, .service-grid, .industry-grid, .reviews { grid-template-columns: 1fr; }
      .image-grid, .feature-banner { grid-template-columns: 1fr; }
      .image-grid figure:last-child { grid-column: auto; }
      .workflow { grid-template-columns: 1fr; }
      .step, .step:nth-child(2) { border-right: 0; border-bottom: 1px solid #e8c9b6; }
      .step:last-child { border-bottom: 0; }
      .article-list { grid-template-columns: 1fr; }
      .rating { align-items: flex-start; flex-direction: column; gap: 5px; }
      .contact-lines { grid-template-columns: 1fr; }
      .float-contact { right: 10px; bottom: 10px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }