/* base.css - Reset & base */
:root {
  --primary: hsl(219deg 62% 46%);
  --secondary: hsl(236deg 55% 52%);
  --accent: hsl(354deg 65% 50%);
  --bg: hsl(0deg 0% 98%);
  --text: hsl(210deg 12% 12%);
}
* {box-sizing: border-box;}
html,body {height:100%;margin:0;font-family: system-ui, -apple-system, 'Roboto', 'Inter', Arial, sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
img,svg{max-width:100%;height:auto}
.container{max-width:1100px;margin:0 auto;padding:24px}
.header{position:sticky;top:0;background:rgba(255,255,255,0.85);backdrop-filter:blur(6px);border-bottom:1px solid rgba(0,0,0,0.04);z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0}
.nav .menu{display:flex;gap:18px;align-items:center}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;background:var(--primary);color:white;font-weight:600}
.grid{display:grid;gap:20px}
@media(min-width:800px){.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}
.footer{padding:32px 0;border-top:1px solid rgba(0,0,0,0.06);font-size:14px;color:rgba(0,0,0,0.6)}
.card{background:white;border-radius:12px;padding:18px;box-shadow:0 6px 20px rgba(10,10,10,0.04)}