:root {
      color-scheme: light;
      --ink: #24221f;
      --muted: #68635e;
      --line: #e9e2da;
      --paper: #fffaf5;
      --white: #fff;
      --orange: #ef5a24;
      --orange-dark: #c93f12;
      --coral: #ff8b58;
      --green: #1e7259;
      --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; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .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(233,226,218,.85); background: rgba(255,250,245,.94); backdrop-filter: blur(14px); }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; font-size: 18px; }
    .brand img { width: 38px; height: 38px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex: 1; }
    .nav-links a { padding: 10px 11px; color: #4d4843; font-size: 13px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--orange-dark); }
    .nav-cta, .button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; border: 0; border-radius: 4px; padding: 12px 18px; color: white; background: var(--orange); font-weight: 700; cursor: pointer; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .nav-cta:hover, .button:hover { background: var(--orange-dark); box-shadow: 0 8px 18px rgba(201,63,18,.18); transform: translateY(-2px); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; background: var(--white); color: var(--ink); cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 88px 0 76px; background: linear-gradient(115deg, #fff2e8 0%, #fffaf5 56%, #ffe1cf 100%); }
    .hero::before { position: absolute; content: ""; width: 380px; height: 380px; right: -100px; top: -165px; border: 1px solid rgba(239,90,36,.2); border-radius: 50%; box-shadow: 0 0 0 38px rgba(239,90,36,.04), 0 0 0 78px rgba(239,90,36,.035); }
    .hero::after { position: absolute; content: ""; width: 230px; height: 230px; right: 12%; bottom: -184px; border: 1px solid rgba(239,90,36,.24); border-radius: 50%; }
    .hero-content { position: relative; z-index: 1; max-width: 780px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--orange-dark); font-size: 13px; font-weight: 800; letter-spacing: 1px; }
    .eyebrow::before { width: 22px; height: 2px; content: ""; background: var(--orange); }
    h1 { max-width: 760px; margin: 18px 0 16px; font-size: clamp(38px, 5vw, 64px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 660px; margin: 0; color: #554d47; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .button-outline { border: 1px solid #d9b19b; color: var(--ink); background: rgba(255,255,255,.58); }
    .button-outline:hover { color: white; border-color: var(--orange-dark); background: var(--orange-dark); }
    .hero-foot { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 30px; color: #6b625b; font-size: 13px; }
    .hero-foot span::before { content: "✓"; margin-right: 7px; color: var(--green); font-weight: 800; }
    .metric-band { position: relative; z-index: 2; margin-top: -1px; padding: 18px 0; color: white; background: #26231f; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .metric { padding: 4px 20px; border-left: 1px solid rgba(255,255,255,.2); }
    .metric:first-child { border-left: 0; }
    .metric strong { display: block; color: #ff9a6f; font-size: 22px; }
    .metric span { color: #eee4db; font-size: 13px; }
    section { padding: 76px 0; scroll-margin-top: 76px; }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }
    .section-heading h2 { margin: 8px 0 0; font-size: clamp(26px, 3vw, 38px); line-height: 1.25; }
    .section-heading p { max-width: 570px; margin: 0; color: var(--muted); }
    .section-kicker { color: var(--orange-dark); font-size: 12px; font-weight: 800; letter-spacing: 1.3px; text-transform: uppercase; }
    .intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 54px; align-items: start; }
    .intro-copy { color: var(--muted); font-size: 16px; }
    .intro-copy p { margin: 0 0 16px; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; margin: 20px 0 0; padding: 0; list-style: none; }
    .capability-list li { padding: 11px 0; border-bottom: 1px solid var(--line); color: #393530; }
    .capability-list li::before { content: "＋"; margin-right: 9px; color: var(--orange); font-weight: 800; }
    .side-note { padding: 24px 26px; border-left: 3px solid var(--orange); background: #fff0e6; }
    .side-note strong { display: block; margin-bottom: 8px; font-size: 18px; }
    .side-note p { margin: 0; color: var(--muted); font-size: 14px; }
    .soft-section { background: #f7f1ea; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { min-height: 180px; padding: 22px; border: 1px solid #e7ddd3; border-top: 3px solid var(--orange); background: var(--white); transition: transform .22s ease, box-shadow .22s ease; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(56,42,30,.08); }
    .service-item h3 { margin: 0 0 8px; font-size: 18px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-tag { display: inline-block; margin-top: 15px; color: var(--orange-dark); font-size: 12px; font-weight: 700; }
    .production-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
    .production { padding: 22px; background: #fffdfb; }
    .production b { display: block; margin-bottom: 8px; font-size: 16px; }
    .production p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
    .industry-copy { color: var(--muted); }
    .industry-copy p { margin-top: 0; }
    .industry-tags { display: flex; flex-wrap: wrap; gap: 9px; }
    .industry-tags span { padding: 8px 11px; border: 1px solid #e4cbb9; color: #563c2d; background: #fff4ec; font-size: 13px; }
    .network-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 28px; color: white; background: #302b26; }
    .network-panel h3 { margin: 0 0 12px; color: #ffb08a; font-size: 19px; }
    .network-panel p { margin: 0; color: #eee5dd; font-size: 14px; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
    .model-cloud span { padding: 5px 9px; border: 1px solid rgba(255,255,255,.22); color: white; font-size: 12px; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
    .step { position: relative; padding-top: 18px; border-top: 2px solid #edc7b2; counter-increment: step; }
    .step::before { content: "0" counter(step); display: inline-block; margin-bottom: 13px; color: var(--orange-dark); font-size: 13px; font-weight: 800; }
    .step h3 { margin: 0 0 7px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .case { overflow: hidden; border: 1px solid var(--line); background: white; }
    .case img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 8; object-fit: cover; }
    .case-copy { padding: 18px 20px 20px; }
    .case-copy h3 { margin: 0 0 5px; font-size: 18px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    .compare { width: 100%; min-width: 700px; border-collapse: collapse; text-align: left; }
    .compare th, .compare td { padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    .compare th { color: white; background: #302b26; font-size: 14px; }
    .compare th:nth-child(2) { background: var(--orange-dark); }
    .compare td { color: #514b45; font-size: 14px; }
    .compare tr:last-child td { border-bottom: 0; }
    .rating { display: grid; grid-template-columns: .75fr 1.25fr; gap: 32px; align-items: center; margin-bottom: 24px; padding: 24px; background: #fff0e6; }
    .rating-score { color: var(--orange-dark); font-size: 46px; font-weight: 800; line-height: 1; }
    .rating-score small { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; font-weight: 500; }
    .stars { color: #cf4a20; letter-spacing: 2px; font-size: 21px; }
    .rating p { margin: 8px 0 0; color: #514b45; }
    .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 20px; border: 1px solid var(--line); background: white; }
    .review p { margin: 0 0 15px; color: #514b45; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .timeline article { padding-top: 18px; border-top: 2px solid var(--orange); }
    .timeline h3 { margin: 0 0 8px; font-size: 17px; }
    .timeline p { margin: 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-link { min-height: 94px; display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 16px; border: 1px solid var(--line); background: white; font-weight: 700; font-size: 14px; }
    .article-link::after { content: "↗"; color: var(--orange-dark); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 18px 42px 18px 0; cursor: pointer; list-style: none; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; top: 14px; right: 4px; color: var(--orange-dark); font-size: 23px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: 0; padding: 0 24px 18px 0; color: var(--muted); font-size: 14px; }
    .contact-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 48px; align-items: start; }
    .contact-details { display: grid; gap: 14px; margin-top: 23px; }
    .contact-details a, .contact-details p { margin: 0; color: #514b45; }
    .contact-details strong { display: block; color: var(--ink); font-size: 13px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 24px; border: 1px solid var(--line); background: white; }
    .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%; padding: 11px 12px; border: 1px solid #dcd3cb; border-radius: 3px; color: var(--ink); background: #fffdfb; }
    .field textarea { min-height: 110px; resize: vertical; }
    .contact-form button { justify-self: start; }
    .join-strip { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 28px; color: white; background: #302b26; }
    .join-strip h2 { margin: 0 0 4px; font-size: 22px; }
    .join-strip p { margin: 0; color: #eee5dd; font-size: 14px; }
    .site-footer { padding: 32px 0 22px; color: #413b35; background: #f0e8df; }
    .footer-top { display: flex; align-items: start; justify-content: space-between; gap: 30px; padding-bottom: 22px; border-bottom: 1px solid #d9cfc4; }
    .footer-brand { max-width: 390px; }
    .footer-brand strong { font-size: 18px; }
    .footer-brand p { margin: 8px 0 0; color: #655e57; font-size: 13px; }
    .friend-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 16px; max-width: 600px; }
    .friend-links a { color: #50473f; font-size: 13px; text-decoration: underline; text-decoration-color: #c8b6a7; text-underline-offset: 3px; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 18px; padding-top: 16px; color: #655e57; font-size: 12px; }
    .floating-contact { position: fixed; z-index: 30; right: 18px; bottom: 22px; width: 68px; padding: 9px 7px; border: 1px solid #edc8b4; color: #332820; background: white; box-shadow: 0 6px 22px rgba(39,31,24,.15); text-align: center; font-size: 11px; }
    .floating-contact img { display: block; width: 48px; height: 48px; margin: 0 auto 5px; object-fit: cover; }
    .back-top { position: fixed; z-index: 29; right: 31px; bottom: 115px; width: 42px; height: 42px; border: 1px solid var(--line); color: var(--ink); background: white; cursor: pointer; opacity: 0; pointer-events: none; transition: opacity .2s ease; }
    .back-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 (max-width: 1000px) {
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-cta { padding: 10px 12px; font-size: 13px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .production-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 66px; }
      .brand { font-size: 16px; }
      .brand img { width: 34px; height: 34px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-cta { display: none; }
      .nav-links { position: absolute; top: 65px; right: 0; left: 0; display: none; align-items: stretch; padding: 8px 16px 14px; border-bottom: 1px solid var(--line); background: var(--paper); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px; font-size: 14px; }
      .hero { padding: 62px 0 56px; }
      .hero-copy { font-size: 16px; }
      .metrics { grid-template-columns: repeat(2, 1fr); gap: 14px 4px; }
      .metric:nth-child(3) { border-left: 0; }
      section { padding: 56px 0; }
      .section-heading { display: block; }
      .section-heading p { margin-top: 12px; }
      .intro-grid, .industry-layout, .contact-layout { grid-template-columns: 1fr; gap: 26px; }
      .capability-list { grid-template-columns: 1fr 1fr; }
      .network-panel { grid-template-columns: 1fr; }
      .steps { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .timeline { grid-template-columns: 1fr; gap: 18px; }
      .rating { grid-template-columns: 1fr; gap: 16px; }
      .footer-top { display: grid; }
      .friend-links { justify-content: flex-start; }
      .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .hero-actions .button { width: 100%; }
      .service-grid, .production-grid, .case-grid, .reviews-grid, .steps { grid-template-columns: 1fr; }
      .service-item { min-height: 0; }
      .capability-list { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .contact-form { grid-template-columns: 1fr; padding: 18px; }
      .field.full { grid-column: auto; }
      .join-strip { align-items: flex-start; flex-direction: column; }
      .floating-contact { right: 10px; bottom: 12px; }
      .back-top { right: 22px; bottom: 102px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }