:root {
      color-scheme: light;
      --ink: #172522;
      --muted: #596b66;
      --paper: #f5f8f7;
      --white: #fff;
      --line: #dce6e2;
      --green: #147d67;
      --green-dark: #0e594d;
      --mint: #dff4e9;
      --lime: #d8f06a;
      --coral: #f0785c;
      --blue: #e3f0f2;
      --shadow: 0 12px 30px rgba(28, 69, 57, .08);
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 86px; }
    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; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(245,248,247,.94); border-bottom: 1px solid rgba(220,230,226,.9); backdrop-filter: blur(14px); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; font-size: 18px; }
    .ai-page-logo { display: block; 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 { color: #344743; font-size: 13px; padding: 8px 9px; border-radius: 5px; transition: color .2s, background .2s; }
    .nav-links a:hover, .nav-links a:focus-visible { color: var(--green-dark); background: var(--mint); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 17px; border: 1px solid var(--green); border-radius: 4px; background: var(--green); color: #fff; font-weight: 700; transition: transform .2s, box-shadow .2s, background .2s; }
    .nav-cta { flex: 0 0 auto; font-size: 13px; }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(20,125,103,.2); background: var(--green-dark); }
    .button.secondary { background: transparent; color: var(--green-dark); }
    .button.secondary:hover { background: var(--mint); box-shadow: none; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; color: var(--ink); background: var(--white); }
    .menu-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: currentColor; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 58px; background: linear-gradient(115deg, #e7f5ed 0%, #f6f8eb 53%, #e3f2f3 100%); border-bottom: 1px solid var(--line); }
    .hero::before { content: ""; position: absolute; width: 340px; height: 340px; right: 2%; top: -180px; border: 1px solid rgba(20,125,103,.2); border-radius: 50%; box-shadow: 0 0 0 28px rgba(20,125,103,.035), 0 0 0 58px rgba(20,125,103,.025); }
    .hero::after { content: ""; position: absolute; width: 110px; height: 110px; right: 13%; bottom: 15px; border: 1px solid rgba(240,120,92,.36); transform: rotate(45deg); }
    .hero-inner { position: relative; z-index: 1; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--green-dark); font-size: 12px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1 { max-width: 720px; margin: 17px 0 14px; font-size: clamp(38px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 650px; margin: 0; color: #425751; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero-note { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 27px; color: #50645e; font-size: 13px; }
    .hero-note span::before { content: "＋"; margin-right: 6px; color: var(--green); font-weight: 800; }
    .section { padding: 66px 0; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 27px; }
    .section-head > div { max-width: 680px; }
    .kicker { color: var(--green); font-weight: 800; font-size: 12px; letter-spacing: 1.3px; text-transform: uppercase; }
    h2 { margin: 5px 0 8px; font-size: clamp(26px, 3.6vw, 38px); line-height: 1.2; letter-spacing: 0; }
    h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.35; }
    p { margin: 0 0 12px; }
    .lead { color: var(--muted); max-width: 740px; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--white); border: 1px solid var(--line); border-radius: 5px; box-shadow: var(--shadow); }
    .metric { padding: 23px 24px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--green-dark); font-size: 27px; line-height: 1.2; }
    .metric span { display: block; margin-top: 5px; color: var(--muted); font-size: 13px; }
    .about-band { background: #edf4f1; }
    .about-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: start; }
    .about-copy { color: #465a54; }
    .platform-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 22px; margin: 18px 0 0; padding: 0; list-style: none; }
    .platform-points li { padding: 11px 0; border-bottom: 1px solid #d5e2dc; color: #334640; font-weight: 650; }
    .platform-points li::before { content: "↗"; margin-right: 9px; color: var(--green); }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { padding: 20px; border: 1px solid var(--line); border-radius: 4px; background: var(--white); transition: transform .2s, box-shadow .2s, border-color .2s; }
    .service-item:hover { transform: translateY(-3px); border-color: #a9d4c4; box-shadow: var(--shadow); }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-mark { display: inline-grid; place-items: center; width: 31px; height: 31px; margin-bottom: 12px; border-radius: 4px; background: var(--mint); color: var(--green-dark); font-size: 13px; font-weight: 800; }
    .tint { background: #edf4f1; }
    .feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 34px; }
    .feature-row { display: grid; grid-template-columns: 42px 1fr; gap: 13px; padding: 18px 0; border-bottom: 1px solid #d5e2dc; }
    .feature-row b { color: var(--coral); font-size: 13px; }
    .feature-row p { margin: 0; color: var(--muted); font-size: 14px; }
    .industry-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
    .industry-list { display: flex; flex-wrap: wrap; gap: 9px; align-content: start; }
    .industry-list span, .tag-cloud a { border: 1px solid #bed8ce; border-radius: 3px; padding: 8px 12px; color: #31584e; background: #f2f8f5; font-size: 13px; }
    .industry-note { padding-left: 24px; border-left: 3px solid var(--lime); color: var(--muted); }
    .network-band { background: #e5f0ef; }
    .network-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 38px; align-items: start; }
    .network-box { padding: 23px 25px; border-left: 3px solid var(--green); background: rgba(255,255,255,.76); }
    .network-box p { color: var(--muted); }
    .network-box p:last-child { margin-bottom: 0; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .step { padding: 22px 21px 24px 0; }
    .step + .step { padding-left: 21px; border-left: 1px solid var(--line); }
    .step-num { color: var(--coral); font-size: 12px; font-weight: 800; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
    .case-item { overflow: hidden; border: 1px solid var(--line); border-radius: 4px; background: var(--white); }
    .case-item img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
    .case-body { padding: 16px 18px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 14px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .review { padding: 18px; border-top: 2px solid var(--green); background: #fff; }
    .review p { min-height: 68px; margin: 0 0 13px; color: #425650; font-size: 14px; }
    .review strong { font-size: 13px; }
    .review span { display: block; color: var(--muted); font-size: 12px; }
    .score-panel { display: grid; grid-template-columns: .72fr 1.28fr; gap: 30px; align-items: center; padding: 26px; background: #e6f3e9; border: 1px solid #cee4d6; }
    .score-number { color: var(--green-dark); font-size: 54px; font-weight: 850; line-height: 1; }
    .stars { margin-top: 9px; color: #d17a3d; letter-spacing: 2px; }
    .score-detail { color: #40544d; }
    .score-detail strong { color: var(--ink); }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--white); }
    table { width: 100%; min-width: 720px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { color: #314a42; background: #eaf3ef; font-size: 13px; }
    td { color: #52635d; font-size: 14px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    tr:last-child td { border-bottom: 0; }
    .match-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 36px; align-items: start; }
    .match-copy { color: var(--muted); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
    .tag-cloud a:hover { background: var(--mint); }
    .price-band { background: #193c35; color: #f5faf7; }
    .price-band .kicker { color: var(--lime); }
    .price-band .lead { color: #d0e1da; }
    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 26px; }
    .price-item { padding: 19px; border: 1px solid rgba(255,255,255,.24); background: rgba(255,255,255,.055); }
    .price-item strong { display: block; margin-bottom: 5px; color: var(--lime); }
    .price-item span { color: #e2ede8; font-size: 14px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 40px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 13px; color: var(--green); font-size: 23px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; padding: 0 38px 16px 0; margin: 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 26px; border-top: 1px solid var(--line); }
    .article-list a { display: flex; justify-content: space-between; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); color: #31554b; font-weight: 650; }
    .article-list a span { color: var(--green); }
    .contact-band { background: #edf4f1; }
    .contact-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 40px; align-items: start; }
    .contact-info { color: var(--muted); }
    .contact-info a { color: var(--green-dark); font-weight: 700; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #334741; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; border: 1px solid #cbd9d3; border-radius: 3px; padding: 11px 12px; background: #fff; color: var(--ink); outline: none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(20,125,103,.1); }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { justify-self: start; cursor: pointer; }
    .footer { padding: 30px 0 22px; background: #e2ece8; color: #263a34; border-top: 1px solid #d0ddd7; }
    .footer-top { display: flex; justify-content: space-between; align-items: start; gap: 26px; }
    .footer p { max-width: 510px; margin: 8px 0 0; color: #52645e; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px 17px; max-width: 560px; }
    .footer-links a { color: #31584d; font-size: 13px; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 14px; margin-top: 22px; padding-top: 14px; border-top: 1px solid #cbd9d3; color: #52645e; font-size: 12px; }
    .floating { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .float-link { display: grid; place-items: center; width: 48px; height: 48px; border: 1px solid #c4d9d0; border-radius: 50%; background: #fff; color: var(--green-dark); box-shadow: 0 6px 18px rgba(23,54,45,.12); font-size: 12px; font-weight: 800; }
    .float-link:hover { background: var(--mint); }
    .qr-pop { position: absolute; right: 58px; bottom: 0; display: none; width: 170px; padding: 10px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
    .qr-pop img { display: block; width: 100%; height: auto; }
    .qr-pop p { margin: 5px 0 0; color: var(--muted); font-size: 12px; text-align: center; }
    .floating:hover .qr-pop, .floating:focus-within .qr-pop { display: block; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: none; }
    @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: 1050px) {
      .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; padding: 12px max(20px, calc((100vw - var(--container)) / 2)); border-bottom: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow); }
      .nav-links.is-open { display: flex; justify-content: flex-start; }
      .menu-toggle { display: block; margin-left: auto; }
      .nav-cta { display: none; }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 58px 0 44px; }
      .hero::after { right: 7%; width: 72px; height: 72px; }
      .section { padding: 49px 0; }
      .section-head { display: block; }
      .metrics { grid-template-columns: 1fr 1fr; }
      .metric { border-bottom: 1px solid var(--line); }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(n+3) { border-bottom: 0; }
      .about-layout, .network-grid, .industry-wrap, .match-layout, .contact-layout { grid-template-columns: 1fr; gap: 23px; }
      .service-grid, .case-grid, .review-grid { grid-template-columns: 1fr 1fr; }
      .steps { grid-template-columns: 1fr 1fr; }
      .step:nth-child(3) { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); }
      .step:nth-child(4) { border-top: 1px solid var(--line); }
      .score-panel { grid-template-columns: 1fr; gap: 16px; }
      .price-grid { grid-template-columns: 1fr; }
      .footer-top { display: block; }
      .footer-links { justify-content: flex-start; margin-top: 18px; }
    }
    @media (max-width: 480px) {
      .container { width: calc(100% - 28px); }
      .brand { font-size: 16px; }
      .ai-page-logo { width: 33px; }
      .hero-copy { font-size: 15px; }
      .hero-note { gap: 8px 14px; }
      .service-grid, .case-grid, .review-grid, .feature-list, .article-list { grid-template-columns: 1fr; }
      .platform-points { grid-template-columns: 1fr; }
      .review p { min-height: auto; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-bottom { flex-direction: column; }
      .floating { right: 12px; bottom: 12px; }
    }