:root {
      color-scheme: light;
      --ink: #202521;
      --muted: #626b64;
      --paper: #fffaf2;
      --surface: #ffffff;
      --line: #e8e4d9;
      --green: #23634b;
      --lime: #c7f36b;
      --coral: #ff765e;
      --yellow: #ffd85e;
      --blue: #bde7ef;
      --shadow: 0 12px 34px rgba(42, 55, 44, .08);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "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(1160px, calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      background: rgba(255,250,242,.94);
      border-bottom: 1px solid rgba(32,37,33,.08);
      backdrop-filter: blur(14px);
    }
    .header-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .ai-page-logo { width: 38px; max-width: 100%; height: auto; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 7px 8px; color: #465048; font-size: 12px; text-decoration: none; border-radius: 5px; }
    .nav-links a:hover { color: var(--green); background: #edf4e4; }
    .nav-cta, .button {
      display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 8px;
      padding: 10px 18px; border: 1px solid var(--green); border-radius: 5px;
      background: var(--green); color: white; text-decoration: none; font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(35,99,75,.2); }
    .button.secondary { background: transparent; color: var(--green); }
    .menu-toggle { display: none; border: 1px solid var(--line); background: white; color: var(--ink); border-radius: 5px; padding: 8px 11px; cursor: pointer; }
    .hero {
      overflow: hidden;
      position: relative;
      padding: 76px 0 54px;
      background-color: #fff3dd;
      background-image: radial-gradient(#d8c7a2 1px, transparent 1px);
      background-size: 22px 22px;
    }
    .hero::after {
      content: ""; position: absolute; width: 260px; height: 120px; right: -48px; top: 36px;
      border: 3px solid var(--coral); border-radius: 52% 48% 43% 57%;
      transform: rotate(-18deg); opacity: .75; pointer-events: none;
    }
    .hero-inner { position: relative; z-index: 1; }
    .eyebrow { display: inline-block; margin: 0 0 14px; color: var(--green); font-size: 13px; font-weight: 800; }
    h1 { max-width: 760px; margin: 0; font-size: clamp(38px, 6vw, 70px); line-height: 1.08; letter-spacing: 0; }
    .hero h1 span { position: relative; z-index: 0; white-space: nowrap; }
    .hero h1 span::after { content: ""; position: absolute; z-index: -1; left: -3px; right: -3px; bottom: 4px; height: 14px; background: var(--lime); transform: rotate(-1deg); }
    .hero-copy { max-width: 660px; margin: 22px 0 26px; color: #4d564f; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin-top: 28px; color: #61685e; font-size: 13px; }
    .metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 50px; border: 1px solid #ddd5c2; background: #ddd5c2; }
    .metric { padding: 17px 20px; background: rgba(255,255,255,.76); }
    .metric strong { display: block; color: var(--green); font-size: 22px; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 68px 0; }
    .section.tint { background: #f2f4e9; }
    .section.coral { background: #fff0e9; }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 22px; margin-bottom: 28px; }
    .section-heading h2 { margin: 0; font-size: clamp(27px, 4vw, 40px); line-height: 1.18; }
    .section-heading p { max-width: 560px; margin: 0; color: var(--muted); }
    .kicker { color: #b0503b; font-size: 12px; font-weight: 800; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: start; }
    .intro-copy { max-width: 680px; }
    .intro-copy p { margin-top: 0; color: #4c554e; }
    .capability-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 0 22px; margin: 24px 0 0; padding: 0; list-style: none; }
    .capability-list li { padding: 12px 0; border-bottom: 1px solid var(--line); font-weight: 700; }
    .capability-list li::before { content: "＋"; color: var(--coral); margin-right: 8px; }
    .scribble-panel { padding: 24px; background: var(--lime); border: 2px solid var(--ink); border-radius: 3px; box-shadow: 7px 7px 0 var(--ink); transform: rotate(1deg); }
    .scribble-panel h3 { margin-top: 0; }
    .scribble-panel p { margin-bottom: 0; }
    .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .service-item { min-height: 164px; padding: 20px; background: var(--surface); border: 1px solid var(--line); border-top: 4px solid var(--green); transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:nth-child(3n+2) { border-top-color: var(--coral); }
    .service-item:nth-child(3n) { border-top-color: #e0b82e; }
    .service-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .service-item h3 { margin: 0 0 8px; font-size: 18px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-item a { display: inline-block; margin-top: 12px; color: var(--green); font-size: 13px; font-weight: 700; }
    .workflow { display: grid; grid-template-columns: repeat(5,1fr); gap: 16px; counter-reset: step; }
    .workflow article { position: relative; padding: 20px 16px; border-top: 2px solid var(--ink); background: #fff; }
    .workflow article::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 14px; color: var(--coral); font-size: 20px; font-weight: 900; }
    .workflow h3 { margin: 0 0 7px; font-size: 16px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-band { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
    .solution-band h2 { margin-top: 0; font-size: 34px; line-height: 1.2; }
    .solution-band p { color: var(--muted); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .tag-cloud span { padding: 7px 12px; border: 1px solid #b4c3a7; border-radius: 2px; background: #fff; font-size: 13px; }
    .media-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
    .media-frame { overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .media-frame img { display: block; width: 100%; height: auto; }
    .media-caption { padding: 13px 16px; color: var(--muted); font-size: 13px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    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; }
    th { background: #edf4e4; font-size: 13px; }
    td { font-size: 14px; }
    .score-line { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 22px; padding: 20px 24px; background: var(--green); color: white; }
    .score-line strong { font-size: 28px; }
    .stars { color: var(--yellow); letter-spacing: 0; font-size: 21px; }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .review { padding: 20px; background: white; border-left: 3px solid var(--coral); }
    .review blockquote { margin: 0 0 15px; color: #424a43; }
    .review cite { color: var(--muted); font-size: 13px; font-style: normal; font-weight: 700; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
    details { border-bottom: 1px solid #d8ddcf; }
    summary { position: relative; padding: 16px 28px 16px 0; cursor: pointer; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 2px; top: 13px; color: var(--green); font-size: 21px; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0 0 17px; color: var(--muted); font-size: 14px; }
    .article-links { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px 24px; }
    .article-links a { padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--green); text-decoration: none; overflow-wrap: anywhere; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 34px; align-items: start; }
    .contact-details p { margin: 8px 0; }
    .contact-details a { color: var(--green); }
    .qr { width: 150px; margin-top: 16px; padding: 6px; background: white; border: 1px solid var(--line); }
    .form-grid { display: grid; grid-template-columns: 1fr 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%; padding: 11px 12px; color: var(--ink); background: white; border: 1px solid #cdd4c9; border-radius: 3px; }
    .field textarea { min-height: 120px; resize: vertical; }
    .form-note { color: var(--muted); font-size: 12px; }
    .footer { padding: 32px 0 24px; background: #e9efe2; color: #26342a; }
    .footer-main { display: flex; align-items: start; justify-content: space-between; gap: 26px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; max-width: 680px; }
    .footer a { color: #245a43; text-decoration: none; }
    .footer-bottom { margin-top: 22px; padding-top: 14px; border-top: 1px solid #cbd5c8; color: #58625a; font-size: 12px; }
    .float-contact { position: fixed; z-index: 15; right: 16px; bottom: 18px; display: grid; gap: 8px; }
    .float-contact a { display: inline-flex; justify-content: center; padding: 10px 13px; border: 1px solid var(--green); background: var(--green); color: white; text-decoration: none; font-size: 13px; font-weight: 700; box-shadow: var(--shadow); }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
    .reveal.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: 900px) {
      .header-row { flex-wrap: wrap; padding-block: 12px; }
      .menu-toggle { display: inline-flex; }
      .header-actions { display: flex; align-items: center; gap: 10px; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; padding: 8px 0; }
      .nav-links.open { display: flex; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .workflow { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 640px) {
      .container { width: min(100% - 30px, 1160px); }
      .hero { padding: 58px 0 34px; }
      .hero::after { width: 135px; height: 70px; right: -52px; top: 26px; }
      .hero-copy { font-size: 15px; }
      .metric-strip { grid-template-columns: repeat(2,1fr); margin-top: 34px; }
      .section { padding: 48px 0; }
      .section-heading { display: block; }
      .section-heading p { margin-top: 12px; }
      .intro-grid, .solution-band, .contact-grid { grid-template-columns: 1fr; }
      .capability-list { grid-template-columns: 1fr; }
      .service-grid, .review-grid, .faq-list, .media-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .score-line { align-items: flex-start; flex-direction: column; }
      .article-links { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-main { flex-direction: column; }
      .float-contact { right: 10px; bottom: 10px; }
      .float-contact a { padding: 9px 10px; font-size: 12px; }
    }