:root {
      color-scheme: light;
      --ink: #282322;
      --muted: #706967;
      --red: #c72d27;
      --red-dark: #92231f;
      --coral: #f06a51;
      --gold: #d59d57;
      --paper: #fff9f7;
      --line: #eadbd6;
      --panel: #fff;
      --soft: #f8eeeb;
      --green: #276c58;
      --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; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,249,247,.96); border-bottom: 1px solid rgba(201,155,139,.28); backdrop-filter: blur(14px); }
    .nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; flex: 0 0 auto; }
    .brand img { display: block; width: 144px; max-height: 48px; object-fit: contain; }
    .brand-fallback { display: none; color: var(--red-dark); font-size: 18px; font-weight: 800; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; min-width: 0; }
    .nav-links a { padding: 10px 9px; color: #514946; font-size: 13px; text-decoration: none; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--red); }
    .nav-cta { background: var(--red); color: #fff !important; border-radius: 4px; padding-inline: 15px !important; margin-left: 7px; }
    .menu-toggle { display: none; width: 42px; height: 42px; align-items: center; justify-content: center; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 4px; cursor: pointer; }
    .menu-toggle span, .menu-toggle span::before, .menu-toggle span::after { display: block; width: 18px; height: 2px; background: currentColor; content: ""; position: relative; }
    .menu-toggle span::before { position: absolute; top: -6px; }
    .menu-toggle span::after { position: absolute; top: 6px; }
    .hero { overflow: hidden; position: relative; background: linear-gradient(122deg, #fff2ed 0%, #fffaf4 47%, #f8e5de 100%); border-bottom: 1px solid #f0d6ce; }
    .hero::before { content: ""; position: absolute; width: 470px; height: 470px; right: -170px; top: -245px; border: 1px solid rgba(199,45,39,.15); border-radius: 50%; box-shadow: 0 0 0 48px rgba(199,45,39,.035), 0 0 0 96px rgba(199,45,39,.025); }
    .hero-inner { position: relative; padding-block: 72px 44px; }
    .hero-copy { max-width: 760px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--red-dark); font-size: 13px; font-weight: 700; letter-spacing: .06em; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--coral); }
    h1 { max-width: 720px; margin: 18px 0 16px; font-size: clamp(38px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; font-weight: 800; }
    h1 em { color: var(--red); font-style: normal; }
    .hero-copy p { max-width: 650px; margin: 0; color: #625753; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 0 19px; border: 1px solid transparent; border-radius: 4px; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(100,35,27,.14); }
    .button-primary { color: #fff; background: var(--red); }
    .button-primary:hover { background: var(--red-dark); }
    .button-outline { color: var(--red-dark); background: rgba(255,255,255,.55); border-color: #d8aaa0; }
    .hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 25px; }
    .hero-tags span { padding: 5px 11px; border: 1px solid #e8c6bc; color: #69524c; font-size: 12px; background: rgba(255,255,255,.45); }
    .metric-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 55px; border-top: 1px solid #e8cbc1; }
    .metric { padding: 20px 18px 0 0; }
    .metric + .metric { padding-left: 22px; border-left: 1px solid #e8cbc1; }
    .metric strong { display: block; color: var(--red-dark); font-size: 17px; }
    .metric span { color: var(--muted); font-size: 13px; }
    section { scroll-margin-top: 86px; }
    .section { padding-block: 76px; }
    .section-tint { background: #f8eeeb; border-block: 1px solid #efdfda; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 22px; margin-bottom: 30px; }
    .section-kicker { color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
    h2 { margin: 5px 0 0; font-size: clamp(28px, 4vw, 39px); line-height: 1.22; letter-spacing: 0; }
    .section-head p { max-width: 490px; margin: 0; color: var(--muted); font-size: 14px; }
    .intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 52px; align-items: start; }
    .intro-copy p { color: #58504d; margin: 0 0 14px; }
    .intro-copy strong { color: var(--red-dark); }
    .capability-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 13px 0; border-bottom: 1px solid var(--line); }
    .capability-list b { display: block; font-size: 14px; }
    .capability-list span { color: var(--muted); font-size: 12px; }
    .tool-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 22px; border-top: 1px solid var(--line); }
    .tool-item { padding: 20px 0 22px; border-bottom: 1px solid var(--line); transition: transform .2s ease; }
    .tool-item:hover { transform: translateY(-3px); }
    .tool-number { color: var(--coral); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
    .tool-item h3 { margin: 7px 0 6px; font-size: 17px; }
    .tool-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .text-link { display: inline-block; margin-top: 9px; color: var(--red-dark); font-size: 13px; font-weight: 700; text-decoration: none; }
    .production-band { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; align-items: center; padding: 32px 0; border-block: 1px solid var(--line); }
    .production-band h3 { margin: 0 0 8px; font-size: 23px; }
    .production-band p { margin: 0; color: var(--muted); }
    .brand-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .brand-cloud span { padding: 6px 10px; background: #fff; border: 1px solid #eadbd6; color: #504845; font-size: 12px; }
    .solutions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
    .solution { padding-top: 17px; border-top: 3px solid var(--red); }
    .solution:nth-child(2) { border-color: var(--gold); }
    .solution:nth-child(3) { border-color: var(--green); }
    .solution h3 { margin: 0 0 8px; font-size: 18px; }
    .solution p { margin: 0; color: var(--muted); font-size: 14px; }
    .solution ul { margin: 12px 0 0; padding-left: 18px; color: #504845; font-size: 13px; }
    .network-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 44px; align-items: start; }
    .network-grid h3 { margin: 0 0 10px; font-size: 20px; }
    .network-grid p { margin: 0; color: var(--muted); }
    .network-points { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
    .network-points div { padding: 12px 0; border-bottom: 1px solid var(--line); }
    .network-points b { display: block; font-size: 14px; }
    .network-points span { color: var(--muted); font-size: 12px; }
    .steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; counter-reset: step; }
    .step { position: relative; padding-top: 19px; border-top: 1px solid #d8a79c; counter-increment: step; }
    .step::before { content: "0" counter(step); color: var(--red); font-size: 13px; font-weight: 800; }
    .step h3 { margin: 8px 0 5px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 22px; align-items: start; }
    .case { min-width: 0; }
    .case figure { margin: 0 0 14px; overflow: hidden; background: #f1e4de; }
    .case figure img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; transition: transform .45s ease; }
    .case:hover img { transform: scale(1.025); }
    .case h3 { margin: 0 0 5px; font-size: 17px; }
    .case p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-score { display: flex; align-items: center; gap: 18px; padding: 18px 0 24px; border-bottom: 1px solid var(--line); }
    .score-number { color: var(--red-dark); font-size: 42px; line-height: 1; font-weight: 800; }
    .score-meta strong { display: block; }
    .stars { color: #b87925; letter-spacing: 2px; }
    .table-wrap { overflow-x: auto; margin-top: 20px; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 680px; }
    th, td { padding: 13px 16px; text-align: left; border-bottom: 1px solid #eee4e0; font-size: 13px; }
    th { background: #f7e9e4; color: #473c39; font-weight: 700; }
    td:first-child { font-weight: 700; }
    td:last-child { color: var(--green); }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
    .review { padding: 18px 0; border-top: 2px solid #dcb2a8; }
    .review blockquote { margin: 0; color: #514946; font-size: 14px; }
    .review cite { display: block; margin-top: 12px; color: var(--red-dark); font-size: 12px; font-style: normal; font-weight: 700; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 40px 17px 0; cursor: pointer; list-style: none; font-size: 15px; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 5px; top: 13px; color: var(--red); font-size: 23px; font-weight: 400; transition: transform .2s ease; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { max-width: 850px; margin: -3px 30px 17px 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5,1fr); gap: 15px; }
    .article { min-height: 100%; padding: 15px 0; border-top: 2px solid #d8aaa0; text-decoration: none; }
    .article span { color: var(--red); font-size: 11px; font-weight: 800; }
    .article h3 { margin: 6px 0 0; font-size: 14px; line-height: 1.5; }
    .article:hover h3 { color: var(--red-dark); }
    .contact-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 48px; align-items: start; }
    .contact-info h3 { margin: 0 0 10px; font-size: 21px; }
    .contact-info p { color: var(--muted); font-size: 14px; }
    .contact-links { display: grid; gap: 8px; margin-top: 18px; }
    .contact-links a { color: var(--red-dark); text-decoration: none; font-weight: 700; }
    .qr-wrap { width: 156px; padding: 8px; margin-top: 18px; border: 1px solid var(--line); background: #fff; }
    .qr-wrap img { display: block; width: 100%; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .field { display: grid; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    .field label { color: #514946; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #ddceca; border-radius: 3px; color: var(--ink); background: #fff; }
    .field textarea { min-height: 118px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid rgba(199,45,39,.2); border-color: var(--red); }
    .submit-row { grid-column: 1 / -1; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
    .submit-row small { color: var(--muted); }
    .site-footer { padding: 26px 0; background: #f1e4df; color: #39312f; border-top: 1px solid #e3d0c9; }
    .footer-top { display: flex; align-items: start; justify-content: space-between; gap: 28px; }
    .footer-brand { font-weight: 800; color: var(--red-dark); }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
    .footer-links a { color: #514946; font-size: 12px; text-decoration: none; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 14px; margin-top: 20px; padding-top: 13px; border-top: 1px solid #dbc8c2; color: #655956; font-size: 12px; }
    .floating { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .floating a { width: 44px; height: 44px; display: grid; place-items: center; border: 1px solid #e4c6bc; background: #fff; color: var(--red-dark); text-decoration: none; font-size: 12px; font-weight: 800; box-shadow: 0 4px 15px rgba(70,36,28,.1); }
    .floating a:hover { background: var(--red); color: #fff; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: none; }
    @media (max-width: 1000px) {
      .nav-links a { padding-inline: 6px; font-size: 12px; }
      .brand img { width: 122px; }
      .tool-grid { grid-template-columns: repeat(3,1fr); }
      .article-list { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-wrap { min-height: 66px; }
      .menu-toggle { display: inline-flex; flex: 0 0 auto; }
      .nav-links { display: none; position: absolute; top: 66px; left: 0; right: 0; padding: 9px 16px 16px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 12px 18px rgba(60,35,28,.08); align-items: stretch; flex-direction: column; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 10px 8px; font-size: 14px; }
      .nav-cta { margin: 5px 0 0; text-align: center; }
      .hero-inner { padding-top: 54px; }
      h1 { font-size: 43px; }
      .hero-copy p { font-size: 15px; }
      .metric-row { grid-template-columns: 1fr 1fr; margin-top: 38px; }
      .metric { padding-bottom: 16px; }
      .metric + .metric { padding-left: 14px; }
      .metric:nth-child(3) { padding-left: 0; border-left: 0; }
      .section { padding-block: 56px; }
      .section-head { align-items: start; flex-direction: column; gap: 10px; }
      .intro-grid, .network-grid, .contact-grid { grid-template-columns: 1fr; gap: 28px; }
      .tool-grid { grid-template-columns: repeat(2,1fr); gap: 0 16px; }
      .production-band { grid-template-columns: 1fr; gap: 22px; }
      .solutions { grid-template-columns: 1fr; gap: 24px; }
      .steps { grid-template-columns: 1fr 1fr; }
      .case-grid { grid-template-columns: 1fr 1fr; }
      .review-grid { grid-template-columns: 1fr 1fr; gap: 12px 20px; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .footer-top, .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 460px) {
      .hero-inner { padding-top: 43px; }
      h1 { font-size: 38px; }
      .hero-actions { align-items: stretch; flex-direction: column; max-width: 280px; }
      .hero-tags { gap: 7px; }
      .capability-list, .network-points { grid-template-columns: 1fr; }
      .tool-grid { grid-template-columns: 1fr 1fr; gap: 0 12px; }
      .tool-item h3 { font-size: 15px; }
      .steps, .case-grid, .review-grid { grid-template-columns: 1fr; }
      .contact-form { grid-template-columns: 1fr; }
      .field-full, .submit-row { grid-column: auto; }
      .article-list { grid-template-columns: 1fr 1fr; gap: 10px; }
      .floating { right: 10px; bottom: 12px; }
      .floating a { width: 40px; height: 40px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }