:root {
      color-scheme: light;
      --ink: #1f2630;
      --muted: #5e6875;
      --paper: #f8f9fc;
      --white: #fff;
      --line: #e1e5eb;
      --coral: #f04c43;
      --coral-dark: #d93b33;
      --lime: #d9f05a;
      --blue: #3265e8;
      --navy: #182333;
      --soft-blue: #eaf0ff;
      --soft-coral: #fff0ed;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    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; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 50;
      top: 0;
      background: rgba(255,255,255,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .brand img { display: block; width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-weight: 800; font-size: 17px; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 8px; color: #46505d; font-size: 13px; white-space: nowrap; border-radius: 5px; transition: color .2s, background .2s; }
    .nav-links a:hover { color: var(--coral-dark); background: var(--soft-coral); }
    .nav-cta, .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 18px; border: 1px solid transparent; border-radius: 4px;
      background: var(--coral); color: #fff; font-weight: 750; transition: transform .2s, background .2s, box-shadow .2s;
    }
    .nav-cta { flex: 0 0 auto; min-height: 40px; padding: 8px 14px; font-size: 13px; }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); background: var(--coral-dark); box-shadow: 0 8px 18px rgba(217,59,51,.2); }
    .button.secondary { color: var(--ink); background: #fff; border-color: #cbd1da; }
    .button.secondary:hover { background: var(--soft-blue); border-color: var(--blue); box-shadow: none; }
    .menu-toggle { display: none; align-items: center; justify-content: center; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; color: var(--ink); background: #fff; }
    .menu-toggle svg { width: 20px; height: 20px; }
    .hero { position: relative; overflow: hidden; background: var(--navy); color: #fff; }
    .hero::before {
      content: ""; position: absolute; inset: 0 0 auto auto; width: 44%; height: 100%;
      background: linear-gradient(135deg, transparent 0 34%, rgba(240,76,67,.95) 34% 62%, rgba(217,240,90,.96) 62% 100%);
      clip-path: polygon(28% 0,100% 0,100% 100%,0 100%);
      animation: color-shift 9s ease-in-out infinite alternate;
    }
    .hero::after { content:""; position:absolute; width:220px; height:220px; right:10%; top:16%; border:1px solid rgba(255,255,255,.28); transform:rotate(35deg); }
    .hero-inner { position: relative; z-index: 1; min-height: 470px; padding-block: 76px 64px; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(240px, .65fr); gap: 38px; align-items: center; }
    .hero-copy { max-width: 700px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 17px; color: var(--lime); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
    .eyebrow::before { content:""; display:inline-block; width:23px; height:3px; background:var(--lime); }
    h1 { max-width: 660px; margin: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; letter-spacing: 0; }
    .hero-lead { max-width: 640px; margin: 22px 0 28px; color: #e1e6ee; font-size: 17px; }
    .hero-actions { display:flex; gap:12px; flex-wrap:wrap; }
    .hero .button.secondary { background: transparent; border-color: rgba(255,255,255,.58); color: #fff; }
    .hero .button.secondary:hover { background: rgba(255,255,255,.12); }
    .hero-note { margin: 24px 0 0; color: #cbd2dd; font-size: 13px; }
    .hero-visual { position: relative; z-index: 1; padding: 24px; }
    .hero-panel { padding: 23px; color: var(--ink); background: rgba(255,255,255,.95); border-left: 5px solid var(--lime); box-shadow: 12px 14px 0 rgba(24,35,51,.25); animation: enter .65s ease-out both; }
    .hero-panel small { color: var(--muted); font-weight: 700; }
    .hero-panel h2 { margin: 9px 0 17px; font-size: 20px; }
    .checkline { display:flex; align-items:flex-start; gap:10px; margin: 11px 0; font-size:14px; }
    .checkline span { flex:0 0 20px; width:20px; height:20px; border-radius:50%; color:#23320b; background:var(--lime); text-align:center; font-weight:900; line-height:20px; }
    .hero-stamp { position:absolute; right:0; bottom:0; width:72px; height:72px; display:grid; place-items:center; border:2px solid var(--navy); border-radius:50%; background:var(--lime); color:var(--navy); font-size:12px; font-weight:900; text-align:center; transform:rotate(9deg); }
    .metrics { position:relative; z-index:2; margin-top:-1px; background:var(--lime); }
    .metric-row { display:grid; grid-template-columns:repeat(4,1fr); }
    .metric { padding:20px 22px; border-right:1px solid rgba(31,38,48,.17); }
    .metric:last-child { border-right:0; }
    .metric strong { display:block; font-size:19px; line-height:1.3; }
    .metric span { display:block; margin-top:4px; color:#424a2c; font-size:12px; }
    section { padding: 74px 0; }
    .section-heading { max-width: 720px; margin-bottom: 32px; }
    .section-kicker { margin:0 0 8px; color:var(--coral-dark); font-size:12px; font-weight:850; letter-spacing:.09em; text-transform:uppercase; }
    h2 { margin:0; font-size: clamp(27px, 3.3vw, 38px); line-height:1.2; letter-spacing:0; }
    .section-heading > p:last-child { max-width:650px; margin:12px 0 0; color:var(--muted); }
    .intro-layout { display:grid; grid-template-columns: .9fr 1.1fr; gap:50px; align-items:start; }
    .intro-aside { padding:23px 0 0 22px; border-left:4px solid var(--coral); }
    .intro-aside p { margin:0 0 14px; color:var(--muted); }
    .intro-aside strong { color:var(--ink); }
    .tag-list { display:flex; flex-wrap:wrap; gap:9px; margin-top:22px; }
    .tag { padding:7px 11px; color:#31466f; background:var(--soft-blue); border:1px solid #d9e2fc; font-size:12px; font-weight:700; }
    .service-section { background:#fff; border-block:1px solid var(--line); }
    .service-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; }
    .service-item { min-height:155px; padding:21px; border:1px solid var(--line); background:#fff; transition:transform .2s, border-color .2s, box-shadow .2s; }
    .service-item:hover { transform:translateY(-4px); border-color:#f3a49e; box-shadow:0 12px 24px rgba(31,38,48,.07); }
    .service-item .index { color:var(--coral); font-size:12px; font-weight:900; }
    .service-item h3 { margin:9px 0 7px; font-size:17px; }
    .service-item p { margin:0; color:var(--muted); font-size:13px; }
    .platform-band { background:#202b3b; color:#fff; }
    .platform-band .section-kicker { color:var(--lime); }
    .platform-band .section-heading > p:last-child { color:#c4ccd7; }
    .model-cloud { display:flex; flex-wrap:wrap; gap:9px; }
    .model-cloud span { padding:8px 12px; border:1px solid rgba(255,255,255,.23); color:#f4f6f9; font-size:13px; }
    .workflow { display:grid; grid-template-columns:repeat(4,1fr); gap:0; counter-reset:step; }
    .workflow article { position:relative; padding:5px 22px 10px 0; }
    .workflow article:not(:last-child)::after { content:""; position:absolute; left:38px; right:18px; top:22px; height:1px; background:#cdd4de; }
    .step-number { position:relative; z-index:1; width:44px; height:44px; display:grid; place-items:center; border-radius:50%; background:var(--coral); color:#fff; font-weight:900; }
    .workflow h3 { margin:16px 0 6px; font-size:16px; }
    .workflow p { margin:0; color:var(--muted); font-size:13px; }
    .solution-section { background:#fff; }
    .solution-grid { display:grid; grid-template-columns:1fr 1fr; gap:36px; align-items:start; }
    .solution-list { list-style:none; padding:0; margin:0; }
    .solution-list li { padding:14px 0; border-bottom:1px solid var(--line); }
    .solution-list strong { display:block; margin-bottom:3px; }
    .solution-list span { color:var(--muted); font-size:13px; }
    .solution-callout { padding:26px; color:#fff; background:var(--blue); }
    .solution-callout h3 { margin:0 0 10px; font-size:22px; }
    .solution-callout p { margin:0 0 19px; color:#edf1ff; }
    .solution-callout .button { background:var(--lime); color:var(--ink); }
    .service-network { display:grid; grid-template-columns:repeat(3,1fr); border-block:1px solid var(--line); }
    .network-cell { padding:20px; border-right:1px solid var(--line); }
    .network-cell:last-child { border-right:0; }
    .network-cell h3 { margin:0 0 7px; font-size:16px; }
    .network-cell p { margin:0; color:var(--muted); font-size:13px; }
    .comparison-section { background:#fff; }
    .score-row { display:flex; align-items:center; gap:20px; margin:0 0 20px; padding:18px 20px; background:var(--soft-coral); border-left:5px solid var(--coral); }
    .score { color:var(--coral-dark); font-size:28px; font-weight:900; white-space:nowrap; }
    .stars { color:#c94437; letter-spacing:0; font-size:19px; }
    .table-scroll { overflow-x:auto; border:1px solid var(--line); }
    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:#f1f3f7; color:#384251; font-size:13px; }
    td { font-size:13px; }
    tbody tr:last-child td { border-bottom:0; }
    tbody td:nth-child(2) { color:#b73a31; font-weight:750; background:#fff9f7; }
    .review-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
    .review { padding:20px; background:#fff; border-top:3px solid var(--blue); }
    .review p { margin:0 0 15px; color:#3c4653; font-size:14px; }
    .review strong { display:block; font-size:13px; }
    .review span { color:var(--muted); font-size:12px; }
    .case-strip { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
    .case { padding:22px; background:#fff; border:1px solid var(--line); }
    .case h3 { margin:0 0 7px; font-size:18px; }
    .case p { margin:0; color:var(--muted); font-size:14px; }
    .case-label { display:inline-block; margin-bottom:12px; color:#304fbd; font-size:12px; font-weight:850; }
    .faq-section { background:#fff; }
    .faq-list { border-top:1px solid var(--line); }
    details { border-bottom:1px solid var(--line); }
    summary { position:relative; padding:17px 36px 17px 0; cursor:pointer; list-style:none; font-weight:750; }
    summary::-webkit-details-marker { display:none; }
    summary::after { content:"+"; position:absolute; right:5px; top:12px; color:var(--coral); font-size:24px; font-weight:400; }
    details[open] summary::after { content:"−"; }
    details p { max-width:850px; margin:0; padding:0 36px 18px 0; color:var(--muted); font-size:14px; }
    .resources { display:grid; grid-template-columns:1fr 1fr; gap:40px; }
    .resource-list { list-style:none; padding:0; margin:0; }
    .resource-list li { padding:11px 0; border-bottom:1px solid var(--line); }
    .resource-list a { color:#2c57c5; font-weight:700; }
    .resource-list a:hover { text-decoration:underline; }
    .article-placeholder { margin:0; color:var(--muted); font-size:14px; }
    .contact-section { background:#eef1f6; }
    .contact-grid { display:grid; grid-template-columns:.75fr 1.25fr; gap:40px; align-items:start; }
    .contact-details { padding-top:4px; }
    .contact-details p { margin:0 0 12px; color:#485361; }
    .contact-details a { color:#244fb8; font-weight:700; }
    .contact-qr { width:142px; margin-top:18px; border:5px solid #fff; }
    .form-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
    .field { display:flex; flex-direction:column; 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; color:var(--ink); background:#fff; border:1px solid #cbd2dc; border-radius:3px; outline:none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color:var(--blue); box-shadow:0 0 0 3px rgba(50,101,232,.12); }
    .field textarea { min-height:116px; resize:vertical; }
    .form-footer { display:flex; align-items:center; gap:14px; flex-wrap:wrap; margin-top:16px; }
    .form-note { margin:0; color:var(--muted); font-size:12px; }
    .site-footer { padding:30px 0 24px; color:#e5eaf1; background:#182333; }
    .footer-top { display:flex; justify-content:space-between; align-items:flex-start; gap:28px; padding-bottom:20px; }
    .footer-top p { max-width:470px; margin:9px 0 0; color:#c1cad5; font-size:13px; }
    .footer-links { display:flex; flex-wrap:wrap; gap:8px 18px; justify-content:flex-end; }
    .footer-links a { color:#edf1f6; font-size:13px; }
    .footer-links a:hover { color:var(--lime); }
    .copyright { padding-top:16px; border-top:1px solid rgba(255,255,255,.16); color:#c1cad5; font-size:12px; }
    .float-contact { position:fixed; right:18px; bottom:20px; z-index:40; display:flex; flex-direction:column; gap:8px; }
    .float-contact a { display:grid; place-items:center; width:48px; height:48px; color:#fff; background:var(--coral); border:2px solid #fff; box-shadow:0 5px 16px rgba(24,35,51,.22); font-size:12px; font-weight:850; text-align:center; }
    .float-contact a.top { color:var(--ink); background:var(--lime); font-size:18px; }
    .reveal { opacity:0; transform:translateY(16px); transition:opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity:1; transform:translateY(0); }
    @keyframes enter { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }
    @keyframes color-shift { from { transform:translateX(0); } to { transform:translateX(2%); } }
    @media (max-width: 1000px) {
      .nav-row { gap:12px; }
      .nav-links { display:none; position:absolute; left:20px; right:20px; top:calc(100% + 1px); padding:10px; justify-content:flex-start; background:#fff; border:1px solid var(--line); box-shadow:0 12px 24px rgba(31,38,48,.12); }
      .nav-links.is-open { display:flex; }
      .nav-links a { padding:9px 10px; }
      .menu-toggle { display:inline-flex; margin-left:auto; }
      .nav-cta { margin-left:0; }
      .hero-inner { grid-template-columns:1fr .75fr; }
    }
    @media (max-width: 700px) {
      .container { width:min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height:64px; }
      .brand-name { font-size:15px; }
      .brand img { width:36px; max-height:36px; }
      .nav-cta { min-height:38px; padding:7px 10px; font-size:12px; }
      .hero::before { width:70%; opacity:.72; }
      .hero-inner { min-height:0; grid-template-columns:1fr; gap:22px; padding-block:56px 46px; }
      .hero-visual { max-width:440px; padding:4px 14px 16px 4px; }
      .hero-panel { padding:19px; }
      .hero-stamp { right:-2px; bottom:0; width:62px; height:62px; }
      .hero-lead { font-size:15px; }
      .metric-row { grid-template-columns:1fr 1fr; }
      .metric { padding:15px; border-bottom:1px solid rgba(31,38,48,.17); }
      .metric:nth-child(2) { border-right:0; }
      .metric:nth-child(3), .metric:nth-child(4) { border-bottom:0; }
      section { padding:54px 0; }
      .intro-layout, .solution-grid, .contact-grid { grid-template-columns:1fr; gap:25px; }
      .service-grid { grid-template-columns:1fr 1fr; gap:10px; }
      .service-item { padding:16px; min-height:0; }
      .workflow { grid-template-columns:1fr 1fr; gap:24px 12px; }
      .workflow article:not(:last-child)::after { display:none; }
      .service-network { grid-template-columns:1fr; }
      .network-cell { border-right:0; border-bottom:1px solid var(--line); padding:16px 0; }
      .network-cell:last-child { border-bottom:0; }
      .review-grid { grid-template-columns:1fr 1fr; }
      .case-strip, .resources { grid-template-columns:1fr; gap:24px; }
      .score-row { align-items:flex-start; flex-direction:column; gap:4px; }
      .footer-top { flex-direction:column; }
      .footer-links { justify-content:flex-start; }
    }
    @media (max-width: 430px) {
      .container { width:calc(100% - 28px); }
      .brand { gap:7px; }
      .brand-name { font-size:14px; }
      .nav-cta { display:none; }
      .nav-links { left:14px; right:14px; }
      .service-grid, .review-grid { grid-template-columns:1fr; }
      .workflow { grid-template-columns:1fr; gap:20px; }
      .form-grid { grid-template-columns:1fr; }
      .field.full { grid-column:auto; }
      .hero-actions .button { width:100%; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
      .reveal { opacity:1; transform:none; }
    }