*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f8fafc;--card:#fff;--border:#e2e8f0;
  --primary:#3b82f6;--primary-hover:#2563eb;--primary-light:#eff6ff;
  --text:#1e293b;--text2:#64748b;--text3:#94a3b8;
  --success:#22c55e;--success-light:#dcfce7;
  --warning:#f59e0b;--warning-light:#fef3c7;
  --danger:#ef4444;--danger-light:#fee2e2;
  --radius:8px;--shadow:0 1px 3px rgba(0,0,0,.1);--shadow-lg:0 4px 12px rgba(0,0,0,.1)
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans SC",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-hover)}
img{max-width:100%;height:auto}
h1{font-size:1.75rem;font-weight:700}
h2{font-size:1.5rem;font-weight:700}
h3{font-size:1.25rem;font-weight:600}
.hidden{display:none!important}