:root {
      color-scheme: light;
      --ink: #17231b;
      --muted: #59675d;
      --green: #287c3e;
      --green-dark: #1b5e30;
      --lime: #d9f46b;
      --paper: #f6f9f2;
      --line: #dce5d8;
      --white: #fff;
      --coral: #ef765a;
      --width: 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; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--width), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky; z-index: 20; top: 0;
      background: rgba(246,249,242,.96);
      border-bottom: 1px solid rgba(23,35,27,.1);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; text-decoration: none; }
    .ai-page-logo { display: block; width: 148px; 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: 8px 10px; font-size: 13px; text-decoration: none; color: #36443a; border-radius: 5px; }
    .nav-links a:hover { background: #e8f1df; color: var(--green-dark); }
    .nav-cta, .button {
      display: inline-flex; justify-content: center; align-items: center; gap: 8px;
      min-height: 46px; padding: 0 20px; border: 1px solid var(--green);
      border-radius: 5px; background: var(--green); color: #fff;
      text-decoration: none; font-weight: 700; cursor: pointer;
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .nav-cta { min-height: 40px; padding-inline: 15px; flex: 0 0 auto; font-size: 13px; }
    .button:hover, .nav-cta:hover { background: var(--green-dark); box-shadow: 0 8px 20px #1b5e3024; transform: translateY(-2px); }
    .button.secondary { background: transparent; color: var(--green-dark); }
    .button.secondary:hover { background: #e8f1df; box-shadow: none; }
    .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; border-bottom: 1px solid var(--line); background: var(--lime); }
    .hero-inner { position: relative; padding-block: 76px 58px; }
    .hero-inner::after {
      content: ""; position: absolute; z-index: 0; width: 390px; aspect-ratio: 1;
      right: 3%; top: 12%; border: 1px solid #17231b2b; border-radius: 50%;
      box-shadow: 0 0 0 38px #17231b08, 0 0 0 78px #17231b06;
      animation: breathe 7s ease-in-out infinite;
    }
    .hero-copy { position: relative; z-index: 1; max-width: 700px; animation: rise .65s ease both; }
    .eyebrow { margin: 0 0 16px; color: var(--green-dark); font-size: 12px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    h1 { max-width: 650px; margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy > p:not(.eyebrow) { max-width: 590px; margin: 20px 0 24px; color: #354b36; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero .button.secondary { border-color: #1b5e3055; color: var(--ink); }
    .hero-bottom { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 42px; color: #334a35; font-size: 13px; }
    .hero-bottom span::before { content: "✓"; margin-right: 7px; color: var(--green-dark); font-weight: 800; }
    .section { padding-block: 76px; }
    .section-head { max-width: 680px; margin-bottom: 30px; }
    .section-head h2 { margin: 0 0 10px; font-size: 32px; line-height: 1.22; letter-spacing: 0; }
    .section-head p { margin: 0; color: var(--muted); }
    .section-kicker { margin: 0 0 8px; color: var(--green); font-size: 12px; font-weight: 800; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 42px; align-items: start; }
    .intro-copy p { margin: 0 0 14px; color: var(--muted); }
    .intro-copy strong { color: var(--ink); }
    .stat-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
    .stat { min-height: 112px; padding: 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .stat strong { display: block; margin-bottom: 5px; color: var(--green-dark); font-size: 18px; }
    .stat span { color: var(--muted); font-size: 13px; }
    .band { background: #edf4e8; border-block: 1px solid var(--line); }
    .service-grid, .case-grid, .review-grid, .article-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
    .service-item { padding: 20px 0 18px; border-top: 2px solid #a9c89d; }
    .service-item h3, .case-item h3 { margin: 0 0 8px; font-size: 18px; }
    .service-item p, .case-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-item a { display: inline-block; margin-top: 12px; color: var(--green-dark); font-size: 13px; font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 3px; }
    .workflow { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; border-block: 1px solid var(--line); }
    .step { padding: 22px 18px 22px 0; }
    .step + .step { padding-left: 18px; border-left: 1px solid var(--line); }
    .step-number { display: inline-flex; align-items: center; justify-content: center; width: 32px; aspect-ratio: 1; margin-bottom: 12px; border-radius: 50%; background: var(--green); color: #fff; font-size: 13px; font-weight: 800; }
    .step h3 { margin: 0 0 6px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .wide-band { background: #1b5e30; color: #fff; }
    .wide-band .section-head p, .wide-band .section-kicker { color: #dceecf; }
    .wide-band .section-head h2 { color: #fff; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .tag-cloud span { padding: 8px 12px; border: 1px solid #ffffff47; border-radius: 3px; color: #f2f8eb; font-size: 13px; }
    .solution-list { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 0 28px; margin: 0; padding: 0; list-style: none; }
    .solution-list li { padding: 15px 0; border-bottom: 1px solid var(--line); }
    .solution-list strong { display: block; margin-bottom: 4px; }
    .solution-list span { color: var(--muted); font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 720px; border-collapse: collapse; text-align: left; }
    th, td { padding: 15px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #eaf2e5; color: #263c2b; font-size: 13px; }
    td { color: #435047; font-size: 13px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .rating { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-bottom: 22px; padding: 18px 20px; background: #e2f2c7; }
    .rating strong { color: var(--green-dark); font-size: 28px; }
    .rating span { color: #3a513b; }
    .case-item { padding: 18px; border: 1px solid var(--line); background: #fff; }
    .case-label { display: inline-block; margin-bottom: 12px; color: var(--green); font-size: 12px; font-weight: 800; }
    .review-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .review { padding: 18px 0; border-top: 1px solid #b9d0b1; }
    .review blockquote { margin: 0 0 14px; color: #314037; font-size: 14px; }
    .review cite { color: var(--muted); font-size: 12px; font-style: normal; }
    .price-strip { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; padding: 24px; background: #e6f0dc; border-left: 4px solid var(--green); }
    .price-strip h3 { margin: 0 0 5px; font-size: 20px; }
    .price-strip p { margin: 0; color: var(--muted); font-size: 14px; }
    .price-strip .button { flex: 0 0 auto; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; top: 12px; color: var(--green); font-size: 23px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 800px; margin: -3px 0 17px; color: var(--muted); font-size: 14px; }
    .article-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    .article-link { display: block; padding: 17px; border: 1px solid var(--line); background: #fff; text-decoration: none; transition: transform .2s ease, border-color .2s ease; }
    .article-link:hover { transform: translateY(-3px); border-color: #8bb57b; }
    .article-link span { display: block; margin-bottom: 6px; color: var(--green); font-size: 12px; font-weight: 800; }
    .article-link strong { font-size: 15px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
    .contact-copy p { color: var(--muted); }
    .contact-details { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }
    .contact-details p { margin: 7px 0; font-size: 14px; }
    .contact-form { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
    .field { display: flex; flex-direction: column; 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: 45px; padding: 10px 12px; border: 1px solid #cbd7c8; border-radius: 4px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 118px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #86b971; outline-offset: 1px; }
    .form-note { grid-column: 1 / -1; margin: -5px 0 0; color: var(--muted); font-size: 12px; }
    .footer { padding-block: 32px; background: #e8efe3; color: #243328; border-top: 1px solid var(--line); }
    .footer-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; }
    .footer p { margin: 6px 0; color: #526056; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; max-width: 600px; }
    .footer-links a { color: #315b38; font-size: 13px; text-decoration: none; }
    .footer-links a:hover { text-decoration: underline; }
    .copyright { margin-top: 20px !important; padding-top: 14px; border-top: 1px solid #cad7c4; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
    .float-contact a { display: flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 14px; border: 1px solid var(--green); border-radius: 4px; background: var(--green); color: #fff; text-decoration: none; font-size: 13px; font-weight: 700; box-shadow: 0 5px 18px #17231b22; }
    .float-contact a:last-child { background: #fff; color: var(--green-dark); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
    @keyframes breathe { 50% { transform: scale(1.04); opacity: .65; } }
    @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-block: 12px; }
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; margin-left: auto; }
      .nav-cta { order: 2; }
      .nav-links { display: none; order: 3; width: 100%; justify-content: flex-start; padding: 8px 0 4px; border-top: 1px solid var(--line); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 8px 10px; }
      .hero-inner::after { right: -16%; }
      .service-grid, .case-grid, .review-grid, .article-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
      .solution-list { grid-template-columns: repeat(2, minmax(0,1fr)); }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--width), calc(100% - 32px)); }
      .nav-row { gap: 10px; }
      .ai-page-logo { width: 126px; }
      .nav-cta { min-height: 38px; padding-inline: 11px; font-size: 12px; }
      .nav-links a { font-size: 12px; }
      .hero-inner { padding-block: 54px 38px; }
      .hero-inner::after { width: 240px; right: -32%; top: 23%; }
      .hero-copy > p:not(.eyebrow) { font-size: 15px; }
      .section { padding-block: 54px; }
      .section-head h2 { font-size: 27px; }
      .intro-grid, .contact-grid { grid-template-columns: 1fr; gap: 26px; }
      .service-grid, .case-grid, .review-grid, .article-grid, .solution-list { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: repeat(2, minmax(0,1fr)); }
      .step { padding: 18px 12px 18px 0; }
      .step + .step { padding-left: 12px; }
      .step:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
      .step:nth-child(4) { border-top: 1px solid var(--line); }
      .footer-top { flex-direction: column; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full, .form-note { grid-column: auto; }
      .float-contact { right: 10px; bottom: 10px; }
      .float-contact a { min-height: 40px; padding-inline: 11px; font-size: 12px; }
    }