:root {
      color-scheme: light;
      --ink: #252126;
      --muted: #6d666b;
      --red: #c92f32;
      --red-dark: #9d2028;
      --coral: #f4d9d3;
      --line: #eadfdd;
      --paper: #fff9f7;
      --white: #fff;
      --green: #226b55;
      --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 { -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; background: rgba(255,249,247,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
    .header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
    .brand img { width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-size: 17px; font-weight: 800; }
    .brand-caption { color: var(--muted); font-size: 11px; display: block; margin-top: -3px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; color: #51484d; font-size: 13px; }
    .nav-links a:hover { color: var(--red); }
    .nav-cta, .button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 44px; padding: 0 18px; border: 1px solid var(--red); background: var(--red); color: #fff; font-weight: 700; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .nav-cta { flex: 0 0 auto; min-height: 40px; padding: 0 15px; font-size: 13px; }
    .button:hover, .nav-cta:hover { background: var(--red-dark); box-shadow: 0 8px 20px #9d20282b; transform: translateY(-2px); }
    .button.secondary { background: transparent; color: var(--red-dark); }
    .button.secondary:hover { background: #fff0ed; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 78px 0 52px; background: #f7e5e0; border-bottom: 1px solid #e9d2ce; }
    .hero::before { content: ""; position: absolute; inset: 0 0 auto; height: 5px; background: linear-gradient(90deg, #9d2028, #db4b42 48%, #f0a183); }
    .hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); align-items: center; gap: 48px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--red-dark); font-size: 13px; font-weight: 750; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: currentColor; }
    h1 { max-width: 720px; margin: 16px 0 16px; font-size: clamp(38px, 5.2vw, 64px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 650px; color: #5c5053; font-size: 17px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
    .hero-note { margin-top: 17px; color: #665b5d; font-size: 12px; }
    .hero-panel { padding: 23px; background: #fffaf8; border: 1px solid #e8cbc5; border-top: 4px solid var(--red); box-shadow: 12px 12px 0 #d8aaa12b; }
    .hero-panel h2 { margin: 0 0 16px; font-size: 16px; }
    .model-cloud { display: flex; gap: 8px; flex-wrap: wrap; }
    .model-cloud span { padding: 6px 9px; background: #f8e9e5; color: #69343a; font-size: 12px; }
    .hero-panel p { margin: 16px 0 0; color: var(--muted); font-size: 13px; }
    .metric-band { padding: 22px 0; background: #fff; border-bottom: 1px solid var(--line); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
    .metric { padding: 8px 24px; border-left: 1px solid var(--line); }
    .metric:first-child { border-left: 0; padding-left: 0; }
    .metric strong { display: block; color: var(--red-dark); font-size: 19px; }
    .metric span { color: var(--muted); font-size: 12px; }
    main { background: linear-gradient(180deg, #fff9f7 0%, #fffdfc 35%, #fff8f5 100%); }
    .section { padding: 72px 0; scroll-margin-top: 86px; }
    .section + .section { border-top: 1px solid #f0e4e1; }
    .section-head { max-width: 720px; margin-bottom: 30px; }
    .section-kicker { color: var(--red); font-size: 12px; font-weight: 800; text-transform: uppercase; }
    h2 { margin: 7px 0 10px; font-size: clamp(26px, 3vw, 36px); line-height: 1.25; letter-spacing: 0; }
    .section-head p, .lead { color: var(--muted); margin: 0; }
    .intro-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 46px; }
    .intro-copy p { color: var(--muted); }
    .intro-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; margin: 22px 0 0; padding: 0; list-style: none; }
    .intro-list li { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
    .intro-list li::before { content: "✓"; margin-right: 9px; color: var(--green); font-weight: 800; }
    .capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .capability { min-height: 170px; padding: 21px; background: #fff; border: 1px solid var(--line); transition: transform .2s ease, box-shadow .2s ease; }
    .capability:hover, .quote:hover { transform: translateY(-3px); box-shadow: 0 12px 26px #4a25200d; }
    .capability .index { color: var(--red); font-size: 12px; font-weight: 800; }
    .capability h3 { margin: 9px 0 7px; font-size: 17px; }
    .capability p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-strip { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: center; padding: 28px; background: #f6e2dd; border-left: 4px solid var(--red); }
    .service-strip p { margin-bottom: 0; color: #625659; }
    .service-tags { display: flex; flex-wrap: wrap; gap: 9px; }
    .service-tags span { padding: 8px 11px; background: #fffaf8; border: 1px solid #ead3ce; font-size: 13px; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: flow; }
    .step { padding: 18px 16px; border-top: 2px solid var(--red); background: #fff; }
    .step::before { counter-increment: flow; content: "0" counter(flow); color: var(--red); font-size: 12px; font-weight: 800; }
    .step h3 { margin: 9px 0 5px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .solution { padding: 17px; background: #fff; border: 1px solid var(--line); }
    .solution h3 { margin: 0 0 6px; font-size: 15px; }
    .solution p { margin: 0; color: var(--muted); font-size: 12px; }
    .network { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; padding: 27px; background: #fff; border: 1px solid var(--line); }
    .network ul { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 20px; margin: 0; padding: 0; list-style: none; }
    .network li { font-size: 13px; }
    .network li::before { content: "↗"; color: var(--red); margin-right: 8px; }
    .review-score { display: flex; align-items: center; gap: 18px; padding: 18px 0 22px; }
    .review-score strong { color: var(--red-dark); font-size: 34px; }
    .stars { color: #bd6a22; letter-spacing: 0; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 700px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 13px; }
    th { background: #f7e8e4; color: #402d30; font-size: 13px; }
    tbody tr:last-child td { border-bottom: 0; }
    .recommended { color: var(--red-dark); font-weight: 800; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .quote { padding: 19px; background: #fff; border: 1px solid var(--line); transition: transform .2s ease, box-shadow .2s ease; }
    .quote p { margin: 0 0 15px; color: #51484d; font-size: 14px; }
    .quote strong { display: block; font-size: 13px; }
    .quote span { color: var(--muted); font-size: 11px; }
    .case-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 18px; align-items: stretch; }
    .case-image { overflow: hidden; background: #f2e7e3; }
    .case-image img { display: block; width: 100%; height: auto; object-fit: contain; }
    .case-copy { padding: 22px; background: #fff; border: 1px solid var(--line); }
    .case-copy h3 { margin: 0 0 8px; }
    .case-copy p { color: var(--muted); font-size: 13px; }
    .article-links { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-links a { padding: 14px; background: #fff; border-bottom: 2px solid #d78a7d; font-size: 13px; transition: background .2s ease; }
    .article-links a:hover { background: #f9e8e3; }
    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .field { display: flex; flex-direction: column; gap: 5px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 12px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 11px; border: 1px solid #d9cbc8; border-radius: 0; background: #fff; color: var(--ink); }
    .field textarea { min-height: 105px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #e7aaa0; outline-offset: 1px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 16px 35px 16px 0; cursor: pointer; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; color: var(--red); font-size: 21px; top: 10px; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 820px; margin: 0 0 16px; color: var(--muted); font-size: 14px; }
    .contact-row { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; padding: 24px; background: #f7e5e0; border: 1px solid #ead1cb; }
    .contact-links { display: flex; gap: 12px 20px; flex-wrap: wrap; font-size: 14px; }
    .contact-links a { color: var(--red-dark); text-decoration: underline; text-underline-offset: 3px; }
    .qr { width: 120px; padding: 7px; background: #fff; border: 1px solid var(--line); }
    .footer { padding: 30px 0 22px; background: #fff; color: #352e31; border-top: 1px solid var(--line); }
    .footer-top { display: flex; justify-content: space-between; gap: 24px; align-items: start; }
    .footer p { margin: 8px 0; color: #635b5f; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 17px; font-size: 12px; color: #51484d; }
    .footer-links a:hover { color: var(--red); }
    .copyright { margin-top: 20px; padding-top: 13px; border-top: 1px solid var(--line); color: #70686b; font-size: 11px; }
    .float-contact { position: fixed; z-index: 12; right: 16px; bottom: 18px; }
    .float-contact a { display: block; padding: 11px 14px; background: var(--red-dark); color: #fff; font-size: 12px; box-shadow: 0 5px 16px #6f18252b; }
    .reveal { opacity: 0; transform: translateY(12px); 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: 960px) {
      .header-inner { flex-wrap: wrap; padding: 12px 0; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .header-actions { display: flex; align-items: center; gap: 10px; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; padding: 5px 0 8px; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 8px 11px 8px 0; margin-right: 11px; }
      .hero-grid { gap: 28px; }
      .solution-grid { grid-template-columns: repeat(3, 1fr); }
      .article-links { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .header-inner { min-height: 65px; gap: 10px; }
      .brand img { width: 36px; max-height: 36px; }
      .brand-name { font-size: 15px; }
      .header-actions .nav-cta { padding: 0 11px; font-size: 12px; }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
      .nav-links a { margin: 0; padding: 9px 4px; }
      .hero { padding: 55px 0 35px; }
      .hero-grid, .intro-grid, .service-strip, .network, .case-grid, .match-layout, .contact-row { grid-template-columns: 1fr; }
      .hero-grid { gap: 28px; }
      h1 { font-size: 42px; }
      .hero-copy { font-size: 15px; }
      .hero-panel { padding: 18px; }
      .metrics { grid-template-columns: 1fr 1fr; gap: 12px 0; }
      .metric { padding: 7px 12px; }
      .metric:nth-child(odd) { border-left: 0; padding-left: 0; }
      .section { padding: 52px 0; }
      .intro-list { grid-template-columns: 1fr; }
      .capability-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .capability { min-height: 0; padding: 16px; }
      .steps { grid-template-columns: 1fr 1fr; }
      .solution-grid { grid-template-columns: 1fr 1fr; }
      .network { padding: 19px; }
      .network ul { grid-template-columns: 1fr 1fr; }
      .article-links { grid-template-columns: 1fr 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-top { flex-direction: column; }
      .review-score { flex-wrap: wrap; }
    }
    @media (max-width: 390px) {
      .capability-grid, .review-grid, .steps { grid-template-columns: 1fr; }
      .hero-actions .button { width: 100%; }
    }