:root {
      color-scheme: light;
      --ink: #202124;
      --muted: #62666f;
      --paper: #fffdf8;
      --line: #e8e5de;
      --coral: #f44732;
      --orange: #ff8a25;
      --blue: #2268e8;
      --teal: #087f76;
      --yellow: #ffd43b;
      --content: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--paper);
      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(--content), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,253,248,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; white-space: nowrap; }
    .brand img { width: 38px; height: 38px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; gap: 0; }
    .nav-links a { padding: 9px 10px; color: #3f4248; font-size: 13px; white-space: nowrap; border-radius: 6px; }
    .nav-links a:hover { color: var(--coral); background: #fff0e9; }
    .header-actions { display: flex; align-items: center; gap: 9px; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: white; color: var(--ink); padding: 8px 12px; border-radius: 6px; }
    .button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 18px; border: 1px solid transparent; border-radius: 6px; font-weight: 750; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(31,39,50,.13); }
    .button-primary { color: #fff; background: var(--coral); }
    .button-dark { color: #fff; background: var(--ink); }
    .button-outline { border-color: #c8c6bf; background: transparent; }
    .hero { position: relative; overflow: hidden; background: #ffdf39; border-bottom: 1px solid #e8c522; }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; }
    .hero::before { width: 310px; height: 310px; border: 2px solid rgba(32,33,36,.16); border-radius: 50%; right: 7%; top: 12%; box-shadow: 0 0 0 28px rgba(255,255,255,.18), 0 0 0 58px rgba(255,255,255,.12); }
    .hero::after { width: 98px; height: 98px; right: 18%; bottom: 10%; background: var(--coral); transform: rotate(18deg); border-radius: 22px; }
    .hero-inner { position: relative; z-index: 1; padding-top: 78px; padding-bottom: 52px; }
    .hero-copy { max-width: 720px; }
    .eyebrow { margin: 0 0 15px; color: #762716; font-size: 12px; font-weight: 850; letter-spacing: 1px; text-transform: uppercase; }
    h1 { max-width: 700px; margin: 0; font-size: clamp(40px, 6vw, 72px); line-height: 1.06; letter-spacing: 0; }
    .hero-lead { max-width: 610px; margin: 22px 0 26px; font-size: 18px; color: #393326; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 11px; }
    .hero-note { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 36px; font-size: 13px; font-weight: 700; }
    .hero-note span::before { content: "●"; margin-right: 8px; color: var(--coral); }
    .hero-stamp { position: absolute; right: 5%; bottom: 23%; width: 132px; height: 132px; border: 2px solid var(--ink); border-radius: 50%; display: grid; place-items: center; text-align: center; font-weight: 900; line-height: 1.2; transform: rotate(10deg); background: rgba(255,255,255,.42); }
    .metrics { background: var(--ink); color: white; }
    .metrics-grid { display: grid; grid-template-columns: repeat(4,1fr); }
    .metric { padding: 21px 18px; border-right: 1px solid #4a4b4c; }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--yellow); font-size: 23px; line-height: 1.2; }
    .metric span { color: #e1e1e1; font-size: 12px; }
    .section { padding: 76px 0; }
    .section-tint { background: #f3f5ff; }
    .section-warm { background: #fff1e8; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 28px; }
    .section-kicker { margin: 0 0 7px; color: var(--coral); font-size: 12px; font-weight: 850; letter-spacing: .7px; }
    h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.2; letter-spacing: 0; }
    .section-intro { max-width: 530px; margin: 0; color: var(--muted); }
    .about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
    .about-layout p { color: var(--muted); }
    .principles { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; margin: 21px 0 0; padding: 0; list-style: none; }
    .principles li { padding: 12px 0; border-bottom: 1px solid var(--line); font-weight: 700; }
    .principles li::before { content: "↗"; color: var(--coral); font-weight: 900; margin-right: 9px; }
    .service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
    .service-item { padding: 21px; border: 1px solid #d9dded; border-top: 4px solid var(--blue); background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:nth-child(4n+2) { border-top-color: var(--coral); }
    .service-item:nth-child(4n+3) { border-top-color: var(--teal); }
    .service-item:nth-child(4n+4) { border-top-color: var(--orange); }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(34,55,91,.1); }
    .service-item h3 { margin: 0 0 8px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-index { display: inline-block; margin-bottom: 17px; color: var(--blue); font-size: 12px; font-weight: 900; }
    .workflow { display: grid; grid-template-columns: repeat(5,1fr); gap: 0; border: 1px solid #ddd9d0; background: #fff; }
    .workflow-step { padding: 23px 18px; border-right: 1px solid #e5e2dc; }
    .workflow-step:last-child { border-right: 0; }
    .workflow-step b { display: block; margin-bottom: 13px; color: var(--coral); font-size: 13px; }
    .workflow-step h3 { margin: 0 0 7px; font-size: 16px; }
    .workflow-step p { margin: 0; color: var(--muted); font-size: 13px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid #ddd9d0; background: #fff; }
    .comparison { width: 100%; min-width: 740px; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 14px 16px; border-bottom: 1px solid #ebe8e2; }
    .comparison th { background: #252a35; color: #fff; font-size: 13px; }
    .comparison td { font-size: 14px; }
    .comparison tr:last-child td { border-bottom: 0; }
    .comparison td:first-child { font-weight: 750; }
    .comparison .highlight { color: #b52a19; font-weight: 800; background: #fff5ef; }
    .rating-band { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 24px; background: var(--yellow); }
    .rating-band strong { font-size: 26px; }
    .rating-stars { color: #7a4314; font-size: 22px; letter-spacing: 0; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .case { padding: 0 0 18px; border-bottom: 2px solid var(--ink); }
    .case-media { margin-bottom: 15px; background: #eceff4; overflow: hidden; }
    .case-media img { display: block; width: 100%; height: auto; object-fit: contain; }
    .case h3 { margin: 0 0 7px; font-size: 18px; }
    .case p { margin: 0; color: var(--muted); font-size: 14px; }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .review { padding: 20px; border-left: 4px solid var(--teal); background: #fff; }
    .review blockquote { margin: 0 0 16px; color: #34363a; font-size: 14px; }
    .review cite { color: var(--muted); font-size: 12px; font-style: normal; font-weight: 700; }
    .model-band { padding: 24px; color: white; background: #2368e8; }
    .model-band h3 { margin: 0 0 12px; }
    .tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag-list span { padding: 5px 10px; border: 1px solid rgba(255,255,255,.55); border-radius: 3px; font-size: 12px; }
    .price-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center; }
    .price-note { padding: 22px; border-left: 5px solid var(--orange); background: #fff; }
    .price-note p { margin: 0 0 10px; color: var(--muted); }
    .price-note p:last-child { margin-bottom: 0; }
    .article-list { border-top: 1px solid var(--line); }
    .article-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 15px 0; border-bottom: 1px solid var(--line); }
    .article-row a { font-weight: 700; }
    .article-row a:hover { color: var(--coral); }
    .article-row span { color: var(--muted); font-size: 12px; white-space: nowrap; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; font-weight: 750; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; top: 13px; color: var(--coral); font-size: 22px; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 850px; margin: 0; padding: 0 35px 18px 0; color: var(--muted); }
    .contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .contact-info p { color: var(--muted); }
    .contact-info a { color: var(--blue); font-weight: 700; }
    .contact-qr { width: 150px; padding: 8px; background: #fff; border: 1px solid var(--line); }
    .contact-qr img { display: block; width: 100%; height: auto; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    label { font-size: 13px; font-weight: 750; }
    input, select, textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #cfcfc9; border-radius: 4px; color: var(--ink); background: #fff; }
    textarea { min-height: 120px; resize: vertical; }
    input:focus, select:focus, textarea:focus { outline: 2px solid rgba(34,104,232,.25); border-color: var(--blue); }
    .footer { color: #e5e7eb; background: #222631; }
    .footer-main { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; padding: 34px 0 24px; }
    .footer h2 { font-size: 18px; color: #fff; }
    .footer p { margin: 8px 0 0; color: #c9cbd1; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 9px 17px; margin-top: 12px; }
    .footer-links a { color: #f1f1f1; font-size: 13px; }
    .footer-links a:hover { color: var(--yellow); }
    .footer-bottom { padding: 14px 0; border-top: 1px solid #474b55; color: #c9cbd1; font-size: 12px; }
    .floating-contact { position: fixed; right: 16px; bottom: 20px; z-index: 15; }
    .floating-contact a { display: inline-flex; padding: 11px 15px; border-radius: 4px; color: #fff; background: var(--coral); box-shadow: 0 8px 22px rgba(30,30,30,.2); font-weight: 750; font-size: 13px; }
    .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; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 1050px) {
      .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; padding: 12px 20px 18px; background: var(--paper); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
      .nav-links.is-open { display: flex; }
      .menu-toggle { display: inline-flex; }
      .header-actions .button { display: none; }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--content), calc(100% - 30px)); }
      .hero-inner { padding-top: 58px; padding-bottom: 38px; }
      .hero::before { width: 180px; height: 180px; right: -6%; top: 16%; }
      .hero::after { width: 58px; height: 58px; right: 14%; bottom: 11%; }
      .hero-stamp { display: none; }
      .hero-lead { font-size: 16px; }
      .metrics-grid { grid-template-columns: 1fr 1fr; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid #4a4b4c; }
      .section { padding: 55px 0; }
      .section-head { display: block; }
      .section-intro { margin-top: 12px; }
      .about-layout, .price-layout, .contact-layout { grid-template-columns: 1fr; gap: 24px; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .workflow { grid-template-columns: 1fr; }
      .workflow-step { border-right: 0; border-bottom: 1px solid #e5e2dc; }
      .workflow-step:last-child { border-bottom: 0; }
      .case-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .footer-main { grid-template-columns: 1fr; }
    }
    @media (max-width: 480px) {
      .brand { font-size: 14px; }
      .brand img { width: 32px; height: 32px; }
      .hero-actions .button { width: 100%; }
      .service-grid, .case-grid, .review-grid, .principles, .form-grid { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .rating-band { align-items: flex-start; flex-direction: column; }
      .article-row { align-items: flex-start; flex-direction: column; gap: 3px; }
      .floating-contact { right: 10px; bottom: 10px; }
    }