:root {
      color-scheme: light;
      --ink: #172728;
      --muted: #5d6e6d;
      --line: #dce7e5;
      --paper: #f5f8f8;
      --white: #fff;
      --teal: #087e78;
      --teal-dark: #075b57;
      --lime: #c8f45b;
      --coral: #ff765e;
      --blue: #315dd7;
      --shadow: 0 16px 44px rgba(29, 62, 58, .09);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { max-width: 100%; height: auto; }
    .container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky; top: 0; z-index: 20;
      background: rgba(245, 248, 248, .94);
      border-bottom: 1px solid rgba(23, 39, 40, .09);
      backdrop-filter: blur(14px);
    }
    .nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; white-space: nowrap; }
    .brand-mark { display: grid; place-items: center; width: 32px; aspect-ratio: 1; border-radius: 9px; color: #103a37; background: var(--lime); font-size: 17px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 7px 8px; color: #455958; text-decoration: none; font-size: 12px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--teal); }
    .nav-actions { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: white; color: var(--ink); border-radius: 7px; width: 40px; height: 40px; cursor: pointer; }
    .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 18px; border: 1px solid transparent; border-radius: 6px; text-decoration: none; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; cursor: pointer; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 9px 22px rgba(7, 91, 87, .18); }
    .button-primary { color: white; background: var(--teal); }
    .button-primary:hover { background: var(--teal-dark); }
    .button-light { color: var(--ink); background: white; border-color: var(--line); }
    .button-lime { color: #18312d; background: var(--lime); }
    .hero {
      position: relative; overflow: hidden; isolation: isolate;
      background: #eaf5f1;
      border-bottom: 1px solid #d9e9e2;
    }
    .hero::before {
      content: ""; position: absolute; z-index: -1; inset: 0;
      background:
        linear-gradient(115deg, transparent 0 58%, rgba(255,255,255,.56) 58% 58.2%, transparent 58.2%),
        linear-gradient(115deg, transparent 0 68%, rgba(8,126,120,.09) 68% 68.2%, transparent 68.2%),
        repeating-linear-gradient(0deg, transparent 0 48px, rgba(8,126,120,.045) 49px 50px);
      animation: grid-drift 18s linear infinite;
    }
    .hero-inner { min-height: 520px; padding-block: 78px 62px; display: grid; align-content: center; }
    .hero-copy { max-width: 760px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--teal-dark); font-size: 12px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1 { max-width: 740px; margin: 17px 0 18px; font-size: clamp(40px, 6vw, 66px); line-height: 1.08; letter-spacing: 0; }
    h1 span { color: var(--teal); }
    .hero-copy > p { max-width: 640px; margin: 0; color: #425957; font-size: 17px; }
    .hero-buttons { display: flex; flex-wrap: wrap; gap: 11px; margin-top: 28px; }
    .hero-note { margin-top: 20px; color: #5d706d; font-size: 13px; }
    .hero-note strong { color: var(--teal-dark); }
    .hero-stripe { margin-top: 54px; display: flex; align-items: center; gap: 0; max-width: 760px; border-top: 1px solid rgba(23,39,40,.16); padding-top: 17px; }
    .hero-stat { flex: 1; }
    .hero-stat + .hero-stat { border-left: 1px solid rgba(23,39,40,.16); padding-left: 22px; margin-left: 22px; }
    .hero-stat strong { display: block; font-size: 16px; }
    .hero-stat span { color: var(--muted); font-size: 12px; }
    .section { padding-block: 76px; }
    .section-tinted { background: #edf4f1; border-block: 1px solid #dfe9e5; }
    .section-dark { color: #f1fbf8; background: #153d39; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 680px; }
    .kicker { color: var(--teal); font-size: 12px; font-weight: 850; letter-spacing: 0; }
    .section-dark .kicker { color: var(--lime); }
    h2 { margin: 7px 0 8px; font-size: clamp(27px, 3vw, 38px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { margin: 0; color: var(--muted); }
    .section-dark .section-head p { color: #c2d7d1; }
    .small-link { color: var(--teal-dark); text-decoration-thickness: 1px; text-underline-offset: 4px; font-weight: 750; white-space: nowrap; }
    .intro-layout { display: grid; grid-template-columns: 1fr 1.08fr; gap: 44px; align-items: center; }
    .intro-copy p { color: var(--muted); }
    .intro-copy .button { margin-top: 12px; }
    .asset-stack { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
    .asset-stack figure { margin: 0; overflow: hidden; background: white; border: 1px solid var(--line); }
    .asset-stack figure:first-child { grid-column: 1 / -1; }
    .asset-stack img { display: block; width: 100%; height: auto; }
    .asset-stack figcaption { padding: 10px 12px; color: var(--muted); font-size: 12px; }
    .metric-row { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid rgba(241,251,248,.22); }
    .metric { padding: 23px 20px 23px 0; }
    .metric + .metric { border-left: 1px solid rgba(241,251,248,.22); padding-left: 22px; }
    .metric strong { display: block; color: var(--lime); font-size: 23px; }
    .metric span { color: #d0e2dc; font-size: 13px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
    .tag-cloud span { border: 1px solid rgba(241,251,248,.28); padding: 7px 11px; color: #e1f0ec; font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { min-height: 164px; padding: 20px; border: 1px solid var(--line); background: white; transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
    .service-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
    .service-item h3 { margin: 0; font-size: 17px; }
    .service-item p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
    .service-index { color: var(--teal); font-size: 12px; font-weight: 800; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 22px 20px 18px 0; border-top: 2px solid #96c7b8; counter-increment: step; }
    .workflow article::before { content: "0" counter(step); display: block; margin-bottom: 18px; color: var(--teal); font-weight: 850; font-size: 13px; }
    .workflow h3 { margin: 0 0 7px; font-size: 17px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 14px; }
    .case { padding: 20px; background: white; border: 1px solid var(--line); }
    .case.featured { background: #e3f3ee; border-color: #c0ded3; }
    .case-label { color: var(--teal); font-size: 12px; font-weight: 800; }
    .case h3 { margin: 8px 0; font-size: 18px; }
    .case p { margin: 0; color: var(--muted); font-size: 14px; }
    .comparison { display: grid; grid-template-columns: .72fr 1.28fr; gap: 30px; align-items: start; }
    .score-panel { padding: 25px; background: var(--teal-dark); color: white; }
    .score-panel .score { margin: 6px 0; color: var(--lime); font-size: 54px; font-weight: 850; line-height: 1; }
    .stars { color: var(--lime); letter-spacing: 2px; font-size: 18px; }
    .score-panel p { margin: 10px 0 0; color: #d6e9e3; font-size: 14px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; min-width: 590px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid #e7eeec; font-size: 14px; vertical-align: top; }
    th { color: var(--muted); background: #f2f7f5; font-size: 12px; }
    td:first-child { font-weight: 750; }
    td:nth-child(2) { color: var(--teal-dark); font-weight: 750; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .review { padding: 18px; background: white; border-left: 3px solid var(--coral); }
    .review p { margin: 0 0 14px; color: #384a49; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .match-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 36px; align-items: start; }
    .match-copy p { color: var(--muted); }
    .contact-details { margin-top: 20px; display: grid; gap: 8px; font-size: 14px; }
    .contact-details a { color: var(--teal-dark); }
    .lead-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%; min-height: 44px; padding: 10px 12px; color: var(--ink); background: white; border: 1px solid #cbd9d6; border-radius: 4px; outline: none; }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(8,126,120,.12); }
    .form-note { grid-column: 1 / -1; margin: -4px 0 0; color: var(--muted); font-size: 12px; }
    .form-status { grid-column: 1 / -1; min-height: 20px; margin: 0; color: var(--teal-dark); font-size: 13px; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 25px; border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 32px 17px 0; cursor: pointer; list-style: none; font-weight: 750; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 2px; top: 14px; color: var(--teal); font-size: 21px; font-weight: 500; transition: transform .2s ease; }
    details[open] summary::after { transform: rotate(45deg); }
    details p { margin: -4px 0 17px; color: var(--muted); font-size: 14px; }
    .article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .article-item { padding: 17px 0; border-top: 2px solid var(--teal); }
    .article-item span { color: var(--teal); font-size: 12px; font-weight: 800; }
    .article-item h3 { margin: 7px 0; font-size: 17px; }
    .article-item a { text-decoration: none; }
    .article-item a:hover { color: var(--teal); }
    .network-band { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; padding: 24px; background: #e6f0ec; border-left: 4px solid var(--coral); }
    .network-band h3 { margin: 0 0 7px; font-size: 19px; }
    .network-band p { margin: 0; color: var(--muted); font-size: 14px; }
    .network-actions { display: flex; flex-wrap: wrap; gap: 9px; justify-content: flex-end; }
    .network-actions a { padding: 8px 10px; border: 1px solid #cbdcd6; background: white; color: var(--teal-dark); text-decoration: none; font-size: 13px; }
    .footer { padding-block: 34px 25px; background: #e4ece9; color: #203330; border-top: 1px solid #d1dfda; }
    .footer-main { display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 32px; }
    .footer-brand p { max-width: 360px; color: #50635f; font-size: 13px; }
    .ai-page-logo { display: block; width: 138px; margin-bottom: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 9px 16px; align-content: start; }
    .footer-links a { color: #31514b; font-size: 13px; text-decoration: none; }
    .footer-links a:hover { color: var(--teal); text-decoration: underline; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 15px; padding-top: 18px; margin-top: 20px; border-top: 1px solid #cbd8d3; color: #536560; font-size: 12px; }
    .floating-tools { position: fixed; z-index: 15; right: 18px; bottom: 18px; display: grid; gap: 8px; }
    .floating-tools a, .floating-tools button { display: grid; place-items: center; width: 46px; height: 46px; border: 1px solid #d1dfda; border-radius: 50%; background: white; color: var(--teal-dark); box-shadow: 0 5px 18px rgba(25,54,49,.12); text-decoration: none; font-size: 12px; font-weight: 800; cursor: pointer; }
    .qr-pop { position: absolute; right: 56px; bottom: 52px; width: 180px; padding: 12px; background: white; border: 1px solid var(--line); box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(6px); transition: .2s ease; }
    .qr-pop img { display: block; width: 100%; }
    .qr-pop span { display: block; margin-top: 6px; text-align: center; font-size: 12px; }
    .floating-tools .qr-trigger:hover + .qr-pop, .qr-pop:hover, .qr-trigger:focus + .qr-pop { opacity: 1; visibility: visible; transform: translateY(0); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes grid-drift { to { background-position: 0 48px, 0 48px, 0 96px; } }
    @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: 1000px) {
      .nav-wrap { gap: 10px; }
      .nav-links { position: absolute; left: 20px; right: 20px; top: 68px; display: none; padding: 12px; background: white; border: 1px solid var(--line); box-shadow: var(--shadow); align-items: stretch; justify-content: start; }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(3, 1fr); }
      .nav-links a { padding: 9px; font-size: 13px; }
      .menu-toggle { display: grid; place-items: center; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(100% - 32px, 1160px); }
      .nav-wrap { min-height: 64px; }
      .nav-actions .button { min-height: 39px; padding-inline: 12px; font-size: 13px; }
      .nav-links { top: 61px; left: 16px; right: 16px; }
      .nav-links.is-open { grid-template-columns: repeat(2, 1fr); }
      .hero-inner { min-height: auto; padding-block: 64px 38px; }
      h1 { font-size: 42px; }
      .hero-copy > p { font-size: 15px; }
      .hero-stripe { margin-top: 38px; }
      .hero-stat + .hero-stat { padding-left: 12px; margin-left: 12px; }
      .hero-stat strong { font-size: 14px; }
      .section { padding-block: 55px; }
      .section-head { display: block; }
      .section-head .small-link { display: inline-block; margin-top: 12px; }
      .intro-layout, .comparison, .match-grid, .footer-main { grid-template-columns: 1fr; gap: 25px; }
      .metric-row { grid-template-columns: 1fr 1fr; }
      .metric:nth-child(3) { border-left: 0; padding-left: 0; border-top: 1px solid rgba(241,251,248,.22); }
      .metric:nth-child(4) { border-top: 1px solid rgba(241,251,248,.22); }
      .service-grid { grid-template-columns: 1fr; }
      .service-item { min-height: 0; }
      .workflow { grid-template-columns: 1fr 1fr; gap: 0 18px; }
      .case-grid, .reviews, .article-grid { grid-template-columns: 1fr; }
      .faq-list { grid-template-columns: 1fr; }
      .network-band { grid-template-columns: 1fr; }
      .network-actions { justify-content: flex-start; }
      .lead-form { grid-template-columns: 1fr; }
      .field-full, .form-note, .form-status { grid-column: auto; }
      .footer-bottom { flex-direction: column; }
    }