:root {
      color-scheme: light;
      --ink: #182523;
      --muted: #5d6c68;
      --paper: #f5f8f4;
      --white: #fff;
      --line: #dce6df;
      --green: #b9ff45;
      --green-dark: #204e3c;
      --teal: #0c8877;
      --pink: #ff6ea9;
      --yellow: #f3c94f;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, "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(245,248,244,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
    .brand img { display: block; width: 38px; height: 38px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 0; }
    .nav-links a { padding: 8px 9px; color: #42524d; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--teal); }
    .nav-links .nav-cta { margin-left: 10px; padding: 9px 15px; border-radius: 5px; background: var(--ink); color: var(--white); }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--white); color: var(--ink); border-radius: 5px; padding: 8px 11px; cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 78px 0 62px; border-bottom: 1px solid var(--line); background: #f5f8f4; }
    .hero::before { content: ""; position: absolute; width: 320px; height: 320px; top: -175px; right: 8%; border: 1px solid #bbd7bf; border-radius: 50%; box-shadow: 0 0 0 30px rgba(185,255,69,.12), 0 0 0 65px rgba(12,136,119,.05); pointer-events: none; }
    .hero::after { content: ""; position: absolute; width: 9px; height: 9px; right: 18%; top: 100px; border-radius: 50%; background: var(--pink); box-shadow: 26px 36px 0 var(--yellow), -45px 80px 0 var(--teal); }
    .hero-inner { position: relative; z-index: 1; max-width: 850px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--green-dark); font-size: 13px; font-weight: 750; letter-spacing: .04em; }
    .eyebrow::before { content: ""; width: 24px; height: 3px; background: var(--teal); }
    h1 { max-width: 760px; margin: 19px 0 18px; font-size: clamp(40px, 7vw, 76px); line-height: 1.08; letter-spacing: -.045em; }
    .hero p { max-width: 670px; margin: 0; color: var(--muted); font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
    .button { display: inline-flex; justify-content: center; align-items: center; gap: 9px; min-height: 46px; padding: 11px 19px; border: 1px solid var(--ink); border-radius: 5px; background: var(--ink); color: var(--white); font-weight: 700; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(24,37,35,.15); }
    .button-primary { color: var(--ink); background: var(--green); border-color: var(--green); }
    .button-light { color: var(--ink); background: transparent; }
    .button-small { min-height: 40px; padding: 8px 14px; font-size: 14px; }
    .hero-note { display: flex; flex-wrap: wrap; gap: 14px 24px; margin-top: 30px; color: #51615c; font-size: 13px; }
    .hero-note span::before { content: "✓"; margin-right: 7px; color: var(--teal); font-weight: 800; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 54px; border-top: 1px solid var(--line); }
    .metric { padding: 20px 18px 0 0; }
    .metric strong { display: block; font-size: 23px; }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 72px 0; }
    .section-alt { background: #eaf2eb; border-block: 1px solid #d8e5d9; }
    .section-white { background: var(--white); border-block: 1px solid var(--line); }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
    .section-head > div { max-width: 700px; }
    .section-kicker { margin: 0 0 6px; color: var(--teal); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
    h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.2; letter-spacing: -.03em; }
    .section-intro { max-width: 600px; margin: 11px 0 0; color: var(--muted); }
    h3 { margin: 0 0 8px; font-size: 19px; line-height: 1.35; }
    .platform-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: start; }
    .platform-copy { max-width: 690px; color: var(--muted); }
    .platform-copy p { margin: 0 0 15px; }
    .platform-points { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 22px; margin-top: 25px; }
    .point { padding-top: 12px; border-top: 1px solid var(--line); }
    .point strong { display: block; margin-bottom: 4px; }
    .point span { color: var(--muted); font-size: 14px; }
    .platform-aside { padding: 25px; background: var(--ink); color: var(--white); border-radius: 6px; }
    .platform-aside h3 { color: var(--green); }
    .platform-aside p { margin: 0; color: #d8e5df; }
    .platform-aside a { display: inline-block; margin-top: 20px; color: var(--green); font-weight: 700; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
    .service { min-height: 176px; padding: 22px; background: var(--paper); transition: background .2s ease, transform .2s ease; }
    .service:hover { position: relative; z-index: 1; background: #fff; transform: translateY(-3px); }
    .service-index { display: block; margin-bottom: 17px; color: var(--teal); font-size: 12px; font-weight: 800; }
    .service p { margin: 0; color: var(--muted); font-size: 14px; }
    .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
    .tag { padding: 6px 11px; border: 1px solid #cbd9cf; border-radius: 3px; color: #3a5147; background: #f9fcf8; font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
    .workflow-item { padding: 18px 0 0; border-top: 2px solid var(--teal); counter-increment: step; }
    .workflow-item::before { content: "0" counter(step); display: block; margin-bottom: 18px; color: var(--teal); font-size: 13px; font-weight: 800; }
    .workflow-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .scenario-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 42px; }
    .scenario { display: grid; grid-template-columns: 125px 1fr; gap: 14px; padding: 17px 0; border-bottom: 1px solid var(--line); }
    .scenario strong { color: var(--green-dark); }
    .scenario span { color: var(--muted); font-size: 14px; }
    .network-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 35px; align-items: center; padding: 28px; border-left: 4px solid var(--pink); background: var(--white); }
    .network-band p { margin: 0; color: var(--muted); }
    .timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 25px; }
    .timeline-item { padding-top: 16px; border-top: 1px solid #9ab5a2; }
    .timeline-item span { display: block; margin-bottom: 8px; color: var(--teal); font-size: 13px; font-weight: 800; }
    .timeline-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .case { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: center; padding: 20px; border: 1px solid var(--line); background: var(--white); }
    .image-frame { overflow: hidden; aspect-ratio: 16 / 10; background: #e4eee5; }
    .image-frame img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-square { grid-template-columns: 150px 1fr; }
    .case-square .image-frame { aspect-ratio: 1; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .review { padding: 19px; border-top: 3px solid var(--green); background: var(--white); }
    .review p { margin: 0 0 15px; color: #42524d; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .comparison { 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: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #eaf2eb; font-size: 13px; }
    td { color: #42524d; font-size: 14px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .score-line { display: flex; align-items: center; gap: 16px; margin-bottom: 22px; padding: 18px 20px; background: var(--ink); color: var(--white); }
    .score-line strong { color: var(--green); font-size: 28px; }
    .score-line span { color: #e2eee7; }
    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .match-copy p { color: var(--muted); }
    .price-note { padding: 20px; border-left: 3px solid var(--yellow); background: #fff9df; }
    .price-note p { margin: 0; color: #4d4b3e; }
    .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: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #cbd8d0; border-radius: 4px; outline: none; background: var(--white); color: var(--ink); }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(12,136,119,.12); }
    .form .button { justify-self: start; cursor: pointer; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; list-style: none; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 12px; color: var(--teal); font-size: 23px; font-weight: 400; transition: transform .2s ease; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { max-width: 850px; margin: 0 30px 17px 0; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0 18px; }
    .article-link { padding: 15px 0; border-top: 1px solid var(--line); }
    .article-link span { display: block; margin-bottom: 4px; color: var(--teal); font-size: 11px; font-weight: 800; }
    .article-link strong { font-size: 14px; }
    .contact-band { display: grid; grid-template-columns: 1fr auto; gap: 22px; align-items: center; padding: 28px; background: var(--green); }
    .contact-band p { margin: 6px 0 0; color: #344238; }
    .footer { padding: 34px 0 22px; background: #e7eee8; color: #24322d; }
    .footer-top { display: flex; justify-content: space-between; gap: 30px; align-items: start; padding-bottom: 23px; border-bottom: 1px solid #c9d6cc; }
    .footer-brand { font-size: 18px; font-weight: 800; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; color: #43574b; font-size: 13px; }
    .footer-links a:hover { color: var(--teal); text-decoration: underline; }
    .footer-meta { display: flex; flex-wrap: wrap; gap: 8px 20px; padding-top: 17px; color: #526159; font-size: 12px; }
    .footer-bottom { margin-top: 12px; color: #657169; font-size: 12px; }
    .floating-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; }
    .floating-contact a { display: grid; place-items: center; width: 50px; height: 50px; border: 0; border-radius: 50%; background: var(--green); color: var(--ink); box-shadow: 0 5px 20px rgba(24,37,35,.2); font-size: 12px; font-weight: 800; }
    .floating-contact a:hover { transform: translateY(-2px); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 900px) {
      .nav-row { flex-wrap: wrap; padding: 12px 0; }
      .menu-toggle { display: block; margin-left: auto; }
      .nav-links { display: none; width: 100%; justify-content: flex-start; padding: 7px 0 4px; border-top: 1px solid var(--line); }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 9px 10px; }
      .nav-links .nav-cta { margin-left: 0; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 55px 0 40px; }
      .hero::before { right: -220px; }
      .hero::after { right: 15%; }
      .hero p { font-size: 16px; }
      .metrics { grid-template-columns: 1fr 1fr; row-gap: 17px; }
      .metric { padding-top: 15px; }
      .section { padding: 54px 0; }
      .section-head { display: block; }
      .platform-grid, .match-layout { grid-template-columns: 1fr; gap: 25px; }
      .platform-points { grid-template-columns: 1fr 1fr; }
      .service-grid { grid-template-columns: 1fr; }
      .service { min-height: 0; }
      .workflow { grid-template-columns: 1fr 1fr; gap: 18px 13px; }
      .scenario-grid { grid-template-columns: 1fr; }
      .scenario { grid-template-columns: 110px 1fr; }
      .network-band { grid-template-columns: 1fr; gap: 12px; padding: 21px; }
      .timeline { grid-template-columns: 1fr; gap: 15px; }
      .case-grid, .review-grid { grid-template-columns: 1fr; }
      .case { grid-template-columns: 1fr; }
      .case-square { grid-template-columns: 100px 1fr; }
      .case-square .image-frame { grid-row: span 2; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .contact-band { grid-template-columns: 1fr; padding: 23px; }
      .footer-top { flex-direction: column; }
      .form { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .score-line { align-items: flex-start; flex-direction: column; gap: 3px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }