:root {
  --primary: #059669;
  --primary-dark: #047857;
  --primary-light: #d1fae5;
  --accent: #f59e0b;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,.1);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.08);
  --radius: 8px;
  --font: system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono: "SF Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.container{max-width:960px;margin:0 auto;padding:0 20px}

.site-header{background:var(--surface);border-bottom:2px solid var(--primary);position:sticky;top:0;z-index:100;box-shadow:var(--shadow)}
.header-inner{max-width:960px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between}
.logo{font-size:1.25rem;font-weight:700;color:var(--primary-dark)}
.logo span{color:var(--text-secondary);font-weight:400;font-size:.85rem}
.main-nav{display:flex;gap:20px;list-style:none}
.main-nav a{color:var(--text);font-weight:500;font-size:.9rem;padding:4px 0;border-bottom:2px solid transparent;transition:border-color .2s}
.main-nav a:hover,.main-nav a.active{border-bottom-color:var(--primary);text-decoration:none}

.breadcrumb{max-width:960px;margin:0 auto;padding:12px 20px;font-size:.82rem;color:var(--text-light)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb span{color:var(--text-secondary)}

.article{max-width:960px;margin:0 auto;padding:24px 20px 60px}
.article h1{font-size:2rem;color:var(--primary-dark);margin-bottom:8px;line-height:1.3}
.article h2{font-size:1.4rem;color:var(--text);margin:40px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--primary-light)}
.article h3{font-size:1.15rem;margin:24px 0 8px;color:var(--text)}
.article p{margin-bottom:16px}
.article ul,.article ol{margin:0 0 16px 24px}
.article li{margin-bottom:6px}
.article blockquote{background:var(--primary-light);border-left:4px solid var(--primary);padding:16px 20px;margin:20px 0;border-radius:0 var(--radius) var(--radius) 0;font-style:italic}
.article code{background:#f1f5f9;padding:2px 6px;border-radius:4px;font-family:var(--mono);font-size:.88em}
.article pre{background:#1e293b;color:#e2e8f0;padding:16px 20px;border-radius:var(--radius);overflow-x:auto;margin:16px 0;font-family:var(--mono);font-size:.85rem;line-height:1.5}

.article table{width:100%;border-collapse:collapse;margin:16px 0 24px;box-shadow:var(--shadow);border-radius:var(--radius);overflow:hidden}
.article thead{background:var(--primary);color:#fff}
.article th{padding:10px 14px;text-align:left;font-weight:600;font-size:.9rem}
.article td{padding:10px 14px;border-bottom:1px solid var(--border);font-size:.9rem}
.article tbody tr{background:var(--surface)}
.article tbody tr:nth-child(even){background:var(--bg)}
.article tbody tr:hover{background:var(--primary-light)}

.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin:16px 0;box-shadow:var(--shadow)}
.card h3{margin-top:0}
.quick-answer{background:var(--primary-light);border-left:4px solid var(--primary);padding:16px 20px;border-radius:0 var(--radius) var(--radius) 0;margin-bottom:24px}
.quick-answer h2{font-size:1rem;color:var(--primary-dark);margin:0 0 6px;border:none;padding:0}
.summary-box{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:var(--radius);padding:20px;margin:24px 0}
.summary-box h2{color:#166534;border:none;margin-top:0;padding:0;font-size:1.1rem}
.key-takeaways{background:#fffbeb;border:1px solid #fde68a;border-radius:var(--radius);padding:20px;margin:24px 0}
.key-takeaways h2{color:#92400e;border:none;margin-top:0;padding:0;font-size:1.1rem}

.cta-box{background:var(--primary-dark);color:#fff;padding:24px 28px;border-radius:var(--radius);margin:32px 0;text-align:center}
.cta-box a{color:#fff;background:var(--accent);padding:10px 28px;border-radius:var(--radius);font-weight:600;display:inline-block;margin-top:10px;font-size:.95rem}
.cta-box a:hover{background:#d97706;text-decoration:none}

.faq-item{margin-bottom:12px;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.faq-q{background:var(--surface);padding:14px 18px;font-weight:600;cursor:pointer;font-size:.95rem}
.faq-a{padding:14px 18px;background:var(--bg);border-top:1px solid var(--border);font-size:.9rem;line-height:1.7}

.article-meta{color:var(--text-light);font-size:.85rem;margin-bottom:20px;display:flex;gap:16px;flex-wrap:wrap}
.article-meta span{display:inline-flex;align-items:center;gap:4px}

.site-footer{background:var(--text);color:#cbd5e1;padding:32px 20px;margin-top:40px;font-size:.85rem}
.footer-inner{max-width:960px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px}
.footer-inner a{color:#6ee7b7}
.footer-bottom{max-width:960px;margin:16px auto 0;padding-top:16px;border-top:1px solid #334155;text-align:center;font-size:.8rem;color:#64748b}

.hero{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:60px 20px;text-align:center}
.hero h1{font-size:2.2rem;margin-bottom:12px;color:#fff}
.hero p{font-size:1.1rem;opacity:.9;max-width:700px;margin:0 auto}
.article-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;padding:32px 20px;max-width:960px;margin:0 auto}
.article-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:box-shadow .2s}
.article-card:hover{box-shadow:var(--shadow-lg)}
.article-card h3{font-size:1rem;margin:0 0 8px}
.article-card p{font-size:.88rem;color:var(--text-secondary);margin:0}
.article-card .tag{display:inline-block;background:var(--primary-light);color:var(--primary-dark);padding:2px 10px;border-radius:12px;font-size:.75rem;font-weight:600;margin-bottom:8px}

@media(max-width:768px){
  .header-inner{flex-direction:column;gap:8px}
  .main-nav{flex-wrap:wrap;justify-content:center;gap:12px}
  .article h1{font-size:1.5rem}
  .hero h1{font-size:1.6rem}
  .article-list{grid-template-columns:1fr}
}