:root {
      color-scheme: light;
      --ink: #272422;
      --muted: #706a67;
      --red: #c92735;
      --red-dark: #991f2a;
      --rose: #fff0ed;
      --paper: #fffaf8;
      --line: #eadfdb;
      --green: #246b52;
      --gold: #bc7b22;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,250,248,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .brand img { width: 42px; height: 42px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { color: #48413e; font-size: 13px; text-decoration: none; padding: 9px 10px; border-radius: 5px; }
    .nav-links a:hover { color: var(--red); background: var(--rose); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 18px; border: 1px solid var(--red); border-radius: 5px; background: var(--red); color: #fff; text-decoration: none; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s; }
    .nav-cta:hover, .button:hover { transform: translateY(-2px); background: var(--red-dark); box-shadow: 0 8px 22px #9e1f2a26; }
    .button.secondary { background: transparent; color: var(--red-dark); border-color: #d9a7a4; }
    .button.secondary:hover { background: #fff; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); cursor: pointer; }
    .hero { overflow: hidden; position: relative; padding: 76px 0 55px; background: linear-gradient(120deg,#fff8f5 0%,#fff0ed 58%,#fff9ef 100%); border-bottom: 1px solid #f0ded8; }
    .hero::before { content: ""; position: absolute; inset: auto -7% -170px auto; width: 490px; aspect-ratio: 1; border: 1px solid #d9434930; border-radius: 50%; box-shadow: 0 0 0 34px #d9434908,0 0 0 72px #d9434905; }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0,1.2fr) minmax(270px,.8fr); gap: 52px; align-items: center; }
    .eyebrow { margin: 0 0 14px; color: var(--red-dark); font-weight: 800; font-size: 13px; letter-spacing: 0; }
    h1 { max-width: 690px; margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 640px; color: #5c5551; font-size: 17px; margin: 22px 0 24px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin-top: 20px; color: var(--muted); font-size: 13px; }
    .hero-panel { border-left: 3px solid var(--red); padding: 8px 0 8px 25px; }
    .hero-panel h2 { margin: 0 0 17px; font-size: 19px; }
    .model-preview { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-preview span, .tag { display: inline-flex; padding: 6px 10px; border: 1px solid #ead1cb; border-radius: 3px; background: #fff; color: #5d4542; font-size: 12px; }
    .hero-panel p { margin: 15px 0 0; color: var(--muted); font-size: 13px; }
    .metrics { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; padding: 24px 0; border-bottom: 1px solid var(--line); }
    .metric { padding: 0 20px; border-right: 1px solid var(--line); }
    .metric:first-child { padding-left: 0; }
    .metric:last-child { border: 0; }
    .metric strong { display: block; color: var(--red-dark); font-size: 20px; }
    .metric span { color: var(--muted); font-size: 13px; }
    section.content-section { padding: 68px 0; }
    section.content-section.tinted { background: #fff2ef; border-block: 1px solid #f2dfda; }
    .section-head { max-width: 720px; margin-bottom: 30px; }
    .section-head .eyebrow { margin-bottom: 7px; }
    h2 { margin: 0; font-size: clamp(27px, 3.3vw, 38px); line-height: 1.25; letter-spacing: 0; }
    .section-head p { margin: 12px 0 0; color: var(--muted); }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 42px; align-items: start; }
    .intro-text p { margin: 0 0 15px; color: #554e4a; }
    .capability-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 0 22px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 13px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; font-size: 14px; }
    .capability-list span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 0 22px; border-top: 1px solid var(--line); }
    .service-item { padding: 20px 0 18px; border-bottom: 1px solid var(--line); }
    .service-item .index { color: var(--red); font-size: 12px; font-weight: 800; }
    .service-item h3 { margin: 6px 0 5px; font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    h3 { letter-spacing: 0; }
    .workflow { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; counter-reset: step; }
    .step { padding: 20px 0; border-top: 2px solid var(--red); }
    .step::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 12px; color: var(--red); font-weight: 800; }
    .step h3 { margin: 0 0 7px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
    .solution { padding: 20px 0; border-top: 1px solid #d9aaa3; }
    .solution h3 { margin: 0 0 8px; font-size: 17px; }
    .solution p { margin: 0; color: var(--muted); font-size: 14px; }
    .network-line { display: flex; flex-wrap: wrap; gap: 9px; }
    .network-line .tag { background: #fff; border-color: #e8d9d4; color: #554c48; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; align-items: start; }
    .case { border-bottom: 1px solid var(--line); padding-bottom: 18px; }
    .case .media { overflow: hidden; background: #f2e9e5; aspect-ratio: 16 / 10; margin-bottom: 14px; }
    .case .media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s; }
    .case:hover .media img { transform: scale(1.025); }
    .case h3 { margin: 0 0 6px; font-size: 16px; }
    .case p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
    .review { padding: 18px 0; border-top: 1px solid #d8aaa2; }
    .review blockquote { margin: 0 0 14px; color: #504845; font-size: 14px; }
    .review cite { color: var(--red-dark); font-size: 13px; font-style: normal; font-weight: 700; }
    .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: 13px 15px; border-bottom: 1px solid #eee4e0; vertical-align: top; font-size: 13px; }
    th { background: #fff0ed; color: #602a2c; }
    tr:last-child td { border-bottom: 0; }
    .rating { display: flex; align-items: center; gap: 18px; margin: 0 0 20px; }
    .rating strong { color: var(--red-dark); font-size: 35px; line-height: 1; }
    .rating span { color: var(--gold); letter-spacing: 2px; }
    .rating small { display: block; color: var(--muted); letter-spacing: 0; }
    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
    .match-copy p { color: var(--muted); }
    .form-grid { 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-height: 44px; padding: 10px 12px; border: 1px solid #d8cbc6; border-radius: 4px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #c9273533; border-color: var(--red); }
    .form-foot { margin-top: 14px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
    .form-foot small { color: var(--muted); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { list-style: none; cursor: pointer; padding: 17px 34px 17px 0; position: relative; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 5px; top: 12px; color: var(--red); font-size: 22px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { margin: -3px 30px 17px 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5,1fr); gap: 16px; }
    .article-list a { min-height: 90px; display: flex; align-items: end; padding: 14px; border-top: 2px solid var(--red); background: #fff; text-decoration: none; font-weight: 700; font-size: 14px; transition: transform .2s; }
    .article-list a:hover { transform: translateY(-3px); }
    .contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 35px; align-items: start; }
    .contact-list { display: grid; gap: 10px; color: #554e4a; font-size: 14px; }
    .contact-list a { color: var(--red-dark); }
    .qr { width: 160px; border: 1px solid var(--line); background: #fff; padding: 8px; }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 25px 0; border-block: 1px solid #d8aaa2; }
    .join-band p { margin: 5px 0 0; color: var(--muted); }
    .site-footer { padding: 28px 0; background: #f6e8e4; color: #393230; }
    .footer-top { display: flex; justify-content: space-between; align-items: start; gap: 24px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
    .footer-links a { color: #504542; font-size: 13px; }
    .copyright { margin-top: 20px; padding-top: 14px; border-top: 1px solid #e1d1cc; color: #625854; font-size: 12px; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .float-contact a { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid #e7c9c3; border-radius: 50%; background: #fff; color: var(--red-dark); text-decoration: none; font-size: 12px; font-weight: 800; box-shadow: 0 5px 18px #4c23151a; }
    .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; animation-duration: .01ms !important; transition-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }
    @media (max-width: 980px) {
      .nav-row { flex-wrap: wrap; padding: 12px 0; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-cta { order: 2; }
      .nav-links { display: none; width: 100%; justify-content: flex-start; order: 3; padding: 5px 0; }
      .nav-links.is-open { display: flex; }
      .hero-inner { gap: 30px; }
      .service-grid { grid-template-columns: repeat(3,1fr); }
      .article-list { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 54px 0 35px; }
      .hero-inner, .intro-grid, .match-layout, .contact-grid { grid-template-columns: 1fr; }
      .hero-inner { gap: 30px; }
      .hero-panel { padding-left: 17px; }
      .metrics { grid-template-columns: repeat(2,1fr); row-gap: 18px; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(3) { padding-left: 0; }
      section.content-section { padding: 48px 0; }
      .service-grid { grid-template-columns: repeat(2,1fr); gap: 0 15px; }
      .workflow { grid-template-columns: repeat(2,1fr); gap: 10px 18px; }
      .solution-grid, .case-grid, .review-grid { grid-template-columns: 1fr; gap: 10px; }
      .case .media { max-height: 300px; }
      .article-list { grid-template-columns: repeat(2,1fr); }
      .footer-top, .join-band { flex-direction: column; }
      .nav-links a { padding: 8px 9px; }
    }
    @media (max-width: 430px) {
      .nav-cta { min-height: 40px; padding-inline: 12px; font-size: 13px; }
      .brand { font-size: 14px; }
      .brand img { width: 36px; height: 36px; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .article-list { grid-template-columns: 1fr 1fr; gap: 10px; }
    }