:root {
      color-scheme: light;
      --ink: #292323;
      --muted: #716765;
      --red: #d92f32;
      --red-dark: #a91f29;
      --red-soft: #fff0ed;
      --rose: #f4d8d3;
      --paper: #fffaf8;
      --white: #fff;
      --line: #eadbd8;
      --green: #2c7658;
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    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; }
    img { max-width: 100%; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 1px solid rgba(234,219,216,.9);
      background: rgba(255,250,248,.96);
      backdrop-filter: blur(14px);
    }
    .header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
    .ai-page-logo { width: 42px; max-width: 100%; height: auto; }
    .brand-name { font-size: 18px; letter-spacing: 0; }
    .nav-area { display: flex; align-items: center; gap: 12px; }
    .nav-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 7px 8px; color: #5d5150; font-size: 12px; white-space: nowrap; border-radius: 4px; transition: color .2s, background .2s; }
    .nav-links a:hover { color: var(--red-dark); background: var(--red-soft); }
    .nav-cta, .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 0 17px; border: 1px solid var(--red);
      border-radius: 5px; color: #fff; background: var(--red);
      font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s;
    }
    .nav-cta { min-height: 38px; padding-inline: 13px; white-space: nowrap; font-size: 13px; }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); background: var(--red-dark); box-shadow: 0 8px 20px rgba(169,31,41,.16); }
    .button.secondary { color: var(--red-dark); background: #fff; border-color: #e8b5ae; }
    .button.secondary:hover { color: #fff; background: var(--red-dark); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; color: var(--ink); background: #fff; cursor: pointer; }
    .hero {
      position: relative; overflow: hidden; isolation: isolate;
      background: linear-gradient(120deg, #fff7f4 0%, #fff1eb 49%, #fce5df 100%);
      border-bottom: 1px solid var(--line);
    }
    .hero::before {
      position: absolute; z-index: -1; content: ""; width: 430px; aspect-ratio: 1;
      right: max(calc((100vw - var(--container)) / 2 - 50px), 2vw); top: 28px;
      border: 1px solid rgba(217,47,50,.2); border-radius: 50%;
      box-shadow: 0 0 0 34px rgba(217,47,50,.035), 0 0 0 74px rgba(217,47,50,.025);
      animation: breathe 8s ease-in-out infinite;
    }
    .hero-inner { min-height: 520px; display: grid; grid-template-columns: minmax(0,1.2fr) minmax(300px,.8fr); align-items: center; gap: 54px; padding-block: 65px; }
    .hero-copy { max-width: 690px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--red-dark); font-size: 13px; font-weight: 800; letter-spacing: .04em; }
    .eyebrow::before { width: 24px; height: 2px; content: ""; background: var(--red); }
    h1 { max-width: 670px; margin: 18px 0 16px; font-size: clamp(36px, 5vw, 62px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy p { max-width: 610px; margin: 0; color: #625352; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note { margin-top: 17px !important; font-size: 12px !important; color: #796967 !important; }
    .hero-visual { position: relative; max-width: 410px; justify-self: end; width: 100%; padding: 20px 0; }
    .quality-panel { position: relative; padding: 24px; border: 1px solid #e5bdb7; background: rgba(255,255,255,.85); box-shadow: 14px 14px 0 rgba(217,47,50,.08); }
    .quality-panel h2 { margin: 0 0 18px; font-size: 17px; }
    .quality-step { display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 12px; padding: 12px 0; border-top: 1px solid #f1e2df; }
    .step-number { display: grid; place-items: center; width: 30px; aspect-ratio: 1; border-radius: 50%; color: var(--red-dark); background: var(--red-soft); font-size: 12px; font-weight: 800; }
    .quality-step strong { display: block; font-size: 14px; }
    .quality-step small { color: var(--muted); font-size: 12px; }
    .step-check { color: var(--green); font-size: 12px; font-weight: 700; }
    .hero-ribbon { margin-top: 18px; padding: 12px 15px; color: #fff; background: var(--red-dark); font-size: 13px; }
    .hero-ribbon strong { color: #fff; }
    .stats-strip { border-bottom: 1px solid var(--line); background: #fff; }
    .stats-grid { display: grid; grid-template-columns: repeat(4,1fr); padding-block: 23px; }
    .stat { padding: 4px 22px; border-right: 1px solid var(--line); }
    .stat:first-child { padding-left: 0; }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; color: var(--red-dark); font-size: 21px; line-height: 1.3; }
    .stat span { color: var(--muted); font-size: 12px; }
    main { overflow: hidden; }
    .section { padding-block: 76px; border-bottom: 1px solid var(--line); }
    .section.tint { background: #fff4f1; }
    .section.white { background: #fff; }
    .section-heading { max-width: 720px; margin-bottom: 30px; }
    .section-kicker { margin: 0 0 8px; color: var(--red-dark); font-size: 12px; font-weight: 800; letter-spacing: .06em; }
    h2 { margin: 0 0 12px; font-size: clamp(26px, 3.5vw, 38px); line-height: 1.2; letter-spacing: 0; }
    h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.35; }
    .section-heading > p:last-child, .lead { color: var(--muted); margin: 0; }
    .intro-grid { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(260px,.9fr); gap: 42px; align-items: start; }
    .intro-copy p { color: #615554; margin: 0 0 15px; }
    .intro-mark { display: grid; grid-template-columns: repeat(2,1fr); border-top: 2px solid var(--red); border-left: 1px solid var(--line); }
    .intro-point { padding: 18px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
    .intro-point strong { display: block; margin-bottom: 5px; }
    .intro-point span { color: var(--muted); font-size: 13px; }
    .capability-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .capability { min-height: 150px; padding: 20px; border: 1px solid var(--line); border-top: 3px solid var(--red); background: #fff; transition: transform .2s, box-shadow .2s; }
    .capability:hover, .quote:hover, .case:hover { transform: translateY(-3px); box-shadow: 0 10px 22px rgba(92,42,37,.08); }
    .capability p { margin: 0; color: var(--muted); font-size: 14px; }
    .capability .index { display: block; margin-bottom: 10px; color: #c45d58; font-size: 11px; font-weight: 800; }
    .service-layout { display: grid; grid-template-columns: minmax(0,1fr) 275px; gap: 34px; align-items: start; }
    .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
    .service-item { padding: 17px; border-left: 2px solid #e9aaa2; background: #fff; }
    .service-item h3 { font-size: 15px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-aside { padding: 22px; color: #fff; background: var(--red-dark); }
    .service-aside h3 { color: #fff; }
    .service-aside p { color: #ffe7e2; font-size: 14px; }
    .service-aside ul { padding-left: 18px; color: #fff4f0; font-size: 13px; }
    .service-aside .button { width: 100%; margin-top: 8px; color: var(--red-dark); border-color: #fff; background: #fff; }
    .workflow { display: grid; grid-template-columns: repeat(5,1fr); gap: 0; counter-reset: flow; }
    .flow-step { position: relative; padding: 19px 18px 10px 0; counter-increment: flow; }
    .flow-step::before { display: block; content: "0" counter(flow); margin-bottom: 14px; color: var(--red); font-weight: 800; font-size: 14px; }
    .flow-step:not(:last-child)::after { position: absolute; top: 29px; left: 39px; right: 10px; content: ""; height: 1px; background: #e5bdb7; }
    .flow-step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .solution { padding: 20px; background: #fff; border: 1px solid var(--line); }
    .solution-label { display: inline-block; margin-bottom: 12px; color: var(--red-dark); font-size: 12px; font-weight: 800; }
    .solution p { margin: 0; color: var(--muted); font-size: 14px; }
    .network-row { display: flex; flex-wrap: wrap; gap: 9px; }
    .network-tag { padding: 9px 13px; border: 1px solid #e7c4be; color: #554846; background: #fff; font-size: 13px; }
    .network-tag.primary { color: #fff; border-color: var(--red-dark); background: var(--red-dark); }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .case { overflow: hidden; border: 1px solid var(--line); background: #fff; transition: transform .2s, box-shadow .2s; }
    .media-frame { overflow: hidden; aspect-ratio: 16 / 9; background: #f4e8e5; }
    .media-frame img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 17px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-body h3 { font-size: 16px; }
    .score-panel { display: grid; grid-template-columns: 250px 1fr; gap: 30px; align-items: center; margin-bottom: 28px; padding: 24px; border: 1px solid #edc7c1; background: #fff; }
    .score-summary { text-align: center; }
    .score-summary strong { display: block; color: var(--red-dark); font-size: 48px; line-height: 1.1; }
    .score-summary span { color: var(--muted); font-size: 13px; }
    .stars { color: #c83a31; letter-spacing: 2px; font-size: 22px; }
    .score-summary p { margin: 5px 0 0; font-weight: 700; }
    .score-copy { color: var(--muted); font-size: 14px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 690px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #f0e4e1; vertical-align: top; font-size: 13px; }
    th { color: #fff; background: #512b2b; font-size: 13px; }
    td:first-child { font-weight: 700; white-space: nowrap; }
    td:nth-child(2) { color: var(--red-dark); font-weight: 700; }
    .quote-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .quote { padding: 19px; border: 1px solid var(--line); background: #fff; transition: transform .2s, box-shadow .2s; }
    .quote p { margin: 0 0 14px; color: #564a49; font-size: 14px; }
    .quote footer { color: var(--red-dark); font-size: 12px; font-weight: 800; }
    .match-layout { display: grid; grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr); gap: 38px; align-items: start; }
    .match-notes { padding-top: 5px; }
    .match-notes p { color: var(--muted); }
    .match-notes ul { padding-left: 20px; color: #554846; }
    .match-notes li { margin: 7px 0; }
    .form-panel { padding: 24px; border: 1px solid var(--line); background: #fff; }
    .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 { color: #493f3e; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #ddcecb; border-radius: 3px; color: var(--ink); background: #fff; outline: none; }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(217,47,50,.1); }
    .form-note { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); background: transparent; }
    summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 17px 3px; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; color: var(--red-dark); font-size: 22px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; padding: 0 32px 17px 3px; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid var(--line); }
    .article-link { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 15px 3px; border-bottom: 1px solid var(--line); color: #514443; }
    .article-link:hover { color: var(--red-dark); }
    .article-link span:last-child { color: var(--red); }
    .timeline { display: grid; grid-template-columns: repeat(4,1fr); border-top: 2px solid var(--red); }
    .timeline-item { padding: 18px 18px 4px 0; }
    .timeline-item strong { display: block; margin-bottom: 6px; }
    .timeline-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .contact-band { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: center; gap: 24px; padding: 26px; color: #fff; background: var(--red-dark); }
    .contact-band h2 { margin: 0 0 5px; font-size: 26px; }
    .contact-band p { margin: 0; color: #ffe7e3; }
    .contact-band .button { color: var(--red-dark); background: #fff; border-color: #fff; white-space: nowrap; }
    .footer { color: #e9dedb; background: #332424; }
    .footer-main { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; padding-block: 38px; }
    .footer h2 { color: #fff; font-size: 18px; }
    .footer p { margin: 8px 0; color: #d3c4c0; font-size: 13px; }
    .footer a { color: #f3d5cf; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 15px; padding-block: 14px; border-top: 1px solid #594343; color: #cbbab6; font-size: 12px; }
    .floating-contact { position: fixed; z-index: 18; right: 18px; bottom: 22px; display: grid; gap: 8px; }
    .float-link { display: grid; place-items: center; min-width: 48px; min-height: 48px; padding: 7px 10px; border: 1px solid #e7b6af; color: var(--red-dark); background: #fff; box-shadow: 0 4px 16px rgba(58,34,31,.13); font-size: 12px; font-weight: 800; }
    .float-link:hover { color: #fff; background: var(--red-dark); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @keyframes breathe { 0%,100% { transform: scale(1); opacity: .8; } 50% { transform: scale(1.035); opacity: 1; } }
    @media (max-width: 1000px) {
      .header-inner { min-height: 68px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-area { gap: 9px; }
      .nav-links { display: none; position: absolute; top: 68px; left: 20px; right: 20px; max-height: min(70vh, 540px); overflow-y: auto; padding: 10px; border: 1px solid var(--line); background: #fffaf8; box-shadow: 0 12px 25px rgba(61,35,32,.12); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); justify-content: stretch; }
      .nav-links a { padding: 10px; border-bottom: 1px solid #f2e6e3; }
      .hero-inner { gap: 30px; }
      .service-layout { grid-template-columns: 1fr; }
      .service-aside { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
      .service-aside .button { align-self: end; }
    }
    @media (max-width: 720px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .brand-name { font-size: 16px; }
      .hero-inner { min-height: auto; grid-template-columns: 1fr; gap: 25px; padding-block: 54px 40px; }
      .hero-visual { justify-self: start; max-width: 440px; padding: 5px 0; }
      .hero::before { width: 280px; right: -100px; top: 210px; }
      h1 { font-size: 42px; }
      .hero-copy p { font-size: 15px; }
      .stats-grid { grid-template-columns: repeat(2,1fr); row-gap: 18px; }
      .stat { padding-inline: 12px; }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(3) { padding-left: 0; }
      .section { padding-block: 55px; }
      .intro-grid, .match-layout { grid-template-columns: 1fr; gap: 24px; }
      .capability-grid, .service-grid, .solution-grid, .case-grid, .quote-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
      .workflow { grid-template-columns: repeat(2,1fr); gap: 10px 18px; }
      .flow-step:not(:last-child)::after { display: none; }
      .score-panel { grid-template-columns: 1fr; gap: 12px; }
      .article-list { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: repeat(2,1fr); }
      .contact-band { grid-template-columns: 1fr; }
      .contact-band .button { justify-self: start; }
      .footer-main { grid-template-columns: 1fr; gap: 22px; }
    }
    @media (max-width: 480px) {
      .container { width: calc(100% - 28px); }
      .nav-cta { display: none; }
      .nav-links { left: 14px; right: 14px; }
      h1 { font-size: 37px; }
      .hero-actions .button { flex: 1 1 100%; }
      .quality-panel { padding: 18px; }
      .capability-grid, .service-grid, .solution-grid, .case-grid, .quote-grid { grid-template-columns: 1fr; }
      .service-aside { display: block; }
      .intro-mark { grid-template-columns: 1fr 1fr; }
      .intro-point { padding: 13px; }
      .form-panel { padding: 17px; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .timeline { grid-template-columns: 1fr 1fr; }
      .footer-bottom { flex-direction: column; }
      .floating-contact { right: 10px; bottom: 12px; }
      .float-link { min-width: 44px; min-height: 44px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }