:root{--ink:#0f172a;--muted:#64748b;--bg:#ffffff;--ring:#e2e8f0}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;color:var(--ink);background:var(--bg)}a{color:inherit;text-decoration:none}.container{max-width:1100px;margin:0 auto;padding:0 1rem}.header{position:sticky;top:0;background:#fff;-webkit-backdrop-filter:saturate(180%) blur(10px);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--ring)}.nav{display:flex;gap:1rem;align-items:center}.nav a{color:var(--muted)}.nav a:hover{color:var(--ink)}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.7rem 1rem;border-radius:.8rem;border:1px solid var(--ring)}.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}.grid{display:grid;gap:1rem}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.card{border:1px solid var(--ring);border-radius:1rem;overflow:hidden;background:#fff}.card .p{padding:1rem}.hero h1{font-size:clamp(1.8rem,2.6vw + 1rem,3rem);margin:0}.text-muted{color:var(--muted)}.footer{border-top:1px solid var(--ring);padding:2rem 0;margin-top:3rem}input,select,textarea{width:100%;padding:.7rem .8rem;border:1px solid var(--ring);border-radius:.8rem}label{font-size:.9rem;color:var(--muted)}small{color:var(--muted)}img{display:block;width:100%;height:auto}img[src=""],img:not([src]){display:none}@media (max-width: 900px){.grid-2,.grid-3{grid-template-columns:1fr}}