:root {
      color-scheme: light;
      --ink: #202321;
      --muted: #60665f;
      --paper: #f8f8f3;
      --white: #fff;
      --line: #dfe2d9;
      --green: #176b4b;
      --lime: #d8f06b;
      --coral: #ff735e;
      --blue: #82c9e7;
      --yellow: #ffd454;
      --purple: #b7a3f5;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", 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(248,248,243,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 76px; 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: 850; white-space: nowrap; }
    .brand-mark { width: 37px; aspect-ratio: 1; display: grid; place-items: center; border-radius: 12px 5px 12px 5px; background: var(--lime); color: var(--ink); font-size: 19px; transform: rotate(-5deg); }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; text-decoration: none; font-size: 13px; font-weight: 650; color: #414640; border-radius: 6px; }
    .nav-links a:hover { background: var(--lime); color: var(--ink); }
    .nav-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 19px;
      border: 1px solid var(--ink);
      border-radius: 5px;
      background: var(--ink);
      color: var(--white);
      text-decoration: none;
      font-weight: 750;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
    }
    .nav-cta { white-space: nowrap; }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); box-shadow: 4px 4px 0 var(--lime); }
    .button-light { color: var(--ink); background: var(--white); }
    .button-green { color: var(--white); background: var(--green); border-color: var(--green); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: var(--white); border-radius: 5px; cursor: pointer; color: var(--ink); }
    .hero { position: relative; overflow: hidden; padding: 80px 0 58px; border-bottom: 1px solid var(--line); background-color: #f3f6e9; }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; }
    .hero::before { width: 165px; height: 165px; top: 44px; right: 9%; border: 2px dashed #383c38; border-radius: 47% 53% 48% 52%; transform: rotate(17deg); }
    .hero::after { width: 76px; height: 76px; right: 21%; bottom: 75px; background: var(--coral); border-radius: 50% 42% 54% 38%; transform: rotate(-21deg); }
    .hero-inner { position: relative; z-index: 1; max-width: 820px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--green); font-size: 12px; font-weight: 850; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 24px; height: 4px; background: var(--coral); transform: rotate(-8deg); }
    h1 { max-width: 770px; margin: 0; font-size: clamp(42px, 7vw, 78px); line-height: 1.04; 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: -5px; bottom: 5px; height: 15px; background: var(--yellow); transform: rotate(-1.5deg); }
    .hero-copy { max-width: 670px; margin: 24px 0 26px; color: #4e554d; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin: 17px 0 0; font-size: 13px; color: var(--muted); }
    .hero-bottom { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 61px; border-top: 1px solid #cbd1c3; }
    .metric { padding: 18px 17px 0 0; }
    .metric + .metric { padding-left: 19px; border-left: 1px solid #cbd1c3; }
    .metric strong { display: block; font-size: 15px; }
    .metric span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section-tint { background: #eef2e5; border-block: 1px solid #dfe5d2; }
    .section-white { background: var(--white); border-block: 1px solid var(--line); }
    .section-head { max-width: 730px; margin-bottom: 30px; }
    .kicker { margin: 0 0 8px; color: var(--green); font-size: 12px; font-weight: 850; }
    h2 { margin: 0; font-size: clamp(28px, 4vw, 43px); line-height: 1.16; }
    .section-head > p:last-child { margin: 12px 0 0; color: var(--muted); }
    .intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 42px; align-items: start; }
    .intro-copy { max-width: 650px; color: #4f554f; }
    .intro-copy p { margin: 0 0 15px; }
    .capability-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14px; font-weight: 700; }
    .capability-list div::before { content: "↗"; margin-right: 9px; color: var(--green); }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .service-item { min-height: 145px; padding: 19px; border: 1px solid var(--line); background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover, .review:hover, .case-item:hover { transform: translateY(-3px); box-shadow: 4px 4px 0 var(--lime); }
    .service-item:nth-child(4n+1) { border-top: 4px solid var(--coral); }
    .service-item:nth-child(4n+2) { border-top: 4px solid var(--blue); }
    .service-item:nth-child(4n+3) { border-top: 4px solid var(--yellow); }
    .service-item:nth-child(4n) { border-top: 4px solid var(--purple); }
    .service-item h3, .process-item h3, .case-item h3 { margin: 0 0 7px; font-size: 17px; }
    .service-item p, .process-item p, .case-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .platform-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 23px; }
    .platform-tags span { padding: 6px 10px; border: 1px solid #d3d8cd; border-radius: 3px; background: #fff; font-size: 12px; font-weight: 700; }
    .split-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .process-item { position: relative; padding: 17px 17px 5px 0; border-top: 2px solid var(--ink); counter-increment: step; }
    .process-item::before { content: "0" counter(step); display: block; margin-bottom: 18px; color: var(--green); font-size: 13px; font-weight: 850; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--white); }
    table { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 14px; }
    th { background: #eef2e5; font-size: 13px; }
    th:first-child, td:first-child { width: 21%; font-weight: 750; }
    .rating { display: flex; flex-wrap: wrap; align-items: center; gap: 15px; margin: 0 0 20px; padding: 17px 20px; background: var(--lime); }
    .rating strong { font-size: 26px; }
    .stars { color: #242820; font-size: 20px; letter-spacing: 0; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .review { padding: 19px; border: 1px solid var(--line); background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
    .review blockquote { margin: 0 0 17px; color: #454b45; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .case-item { padding: 20px; border: 1px solid var(--line); background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .case-label { display: inline-block; margin-bottom: 12px; padding: 4px 8px; background: var(--blue); font-size: 11px; font-weight: 800; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); }
    .article-list a { display: flex; min-height: 95px; align-items: center; justify-content: space-between; gap: 10px; padding: 15px 14px 15px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-size: 14px; font-weight: 700; }
    .article-list a::after { content: "↗"; color: var(--green); }
    .article-list a:hover { color: var(--green); }
    .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; list-style: none; font-weight: 750; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; top: 13px; font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 820px; margin: -2px 0 17px; color: var(--muted); font-size: 14px; }
    .form-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 42px; align-items: start; }
    .contact-copy p { color: var(--muted); }
    .contact-links { display: grid; gap: 8px; margin-top: 20px; font-size: 14px; }
    .contact-links a { color: var(--green); font-weight: 700; }
    .request-form { 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: 750; }
    .field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #cfd5cb; border-radius: 3px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-extra { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 25px; padding-top: 20px; border-top: 1px solid var(--line); }
    .qr-box { display: flex; align-items: center; gap: 13px; color: var(--muted); font-size: 12px; }
    .qr-box img { width: 86px; aspect-ratio: 1; object-fit: contain; border: 1px solid var(--line); background: white; }
    .site-footer { padding: 26px 0; background: #202722; color: #f7f8f3; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
    .footer-row p { margin: 0; font-size: 12px; color: #d2d8d0; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 15px; }
    .footer-links a { color: #f7f8f3; font-size: 12px; text-decoration-color: #829288; }
    .floating-help { position: fixed; z-index: 15; right: 18px; bottom: 18px; display: grid; gap: 8px; }
    .floating-help a { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid var(--ink); border-radius: 50%; background: var(--lime); color: var(--ink); text-decoration: none; font-size: 19px; font-weight: 850; box-shadow: 2px 2px 0 var(--ink); }
    .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; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 960px) {
      .nav-row { gap: 12px; }
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-cta { padding-inline: 13px; font-size: 13px; }
      .intro-grid, .split-band, .form-layout { grid-template-columns: 1fr; gap: 25px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { position: relative; min-height: 66px; }
      .menu-toggle { display: grid; place-items: center; margin-left: auto; }
      .nav-cta { display: none; }
      .nav-links { display: none; position: absolute; top: calc(100% + 1px); left: -16px; right: -16px; padding: 10px 16px 14px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 10px 15px rgba(25,35,27,.08); }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px; font-size: 14px; }
      .hero { padding: 62px 0 39px; }
      .hero::before { width: 82px; height: 82px; top: 29px; right: 8%; }
      .hero::after { width: 44px; height: 44px; right: 20%; bottom: 56px; }
      .hero-copy { font-size: 15px; }
      .hero-bottom { grid-template-columns: 1fr 1fr; margin-top: 44px; }
      .metric { padding: 14px 8px 14px 0; border-bottom: 1px solid #cbd1c3; }
      .metric + .metric { padding-left: 12px; }
      .metric:nth-child(3) { padding-left: 0; border-left: 0; }
      .section { padding: 57px 0; }
      .service-grid, .review-grid, .case-grid { grid-template-columns: 1fr; }
      .service-item { min-height: 0; }
      .workflow { grid-template-columns: 1fr 1fr; row-gap: 18px; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .article-list a { min-height: 72px; }
      .contact-extra { grid-template-columns: 1fr; }
      .footer-row { align-items: flex-start; flex-direction: column; }
      .request-form { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .rating { gap: 8px 12px; }
      .floating-help { right: 12px; bottom: 12px; }
      .floating-help a { width: 43px; height: 43px; }
    }