/* Clean, lightweight styles for GitHub Pages */
:root{
  --bg:#0b1220;
  --card:#0f1b33;
  --text:#eaf0ff;
  --muted:#b9c6e6;
  --line:rgba(255,255,255,.12);
  --accent:#64b5ff;
  --accent2:#7ee787;
  --shadow:0 10px 30px rgba(0,0,0,.28);
  --radius:16px;
  --wrap:1060px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:radial-gradient(1200px 800px at 30% 0%, #13284d 0%, var(--bg) 55%, #070b14 100%);color:var(--text);font-family:var(--font);}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 18px}
.top{position:sticky;top:0;backdrop-filter:saturate(160%) blur(12px);background:rgba(11,18,32,.65);border-bottom:1px solid var(--line);z-index:50}
.top .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 18px}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);display:grid;place-items:center;font-weight:800}
.brand-title{font-weight:800;letter-spacing:.2px}
.brand-sub{font-size:13px;color:var(--muted)}
.nav{display:flex;gap:16px;flex-wrap:wrap}
.nav a{font-size:14px;color:var(--muted)}
.nav a:hover{color:var(--text)}
.hero{padding:34px 0 18px}
.hero h1{margin:0 0 10px;font-size:38px;letter-spacing:-.6px}
.hero p{margin:0 0 18px;max-width:760px;color:var(--muted);line-height:1.6}
.cta-row{display:flex;gap:10px;flex-wrap:wrap}
.btn{border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);padding:10px 14px;border-radius:12px;display:inline-flex;align-items:center;gap:8px;cursor:pointer}
.btn:hover{border-color:rgba(255,255,255,.22)}
.btn.primary{background:linear-gradient(135deg, var(--accent) 0%, #3b82f6 100%);border:0}
.btn.full{width:100%;justify-content:center}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.badge{font-size:12px;color:#d6e6ff;border:1px solid var(--line);padding:6px 10px;border-radius:999px;background:rgba(0,0,0,.18)}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;padding:10px 0 28px}
.card{grid-column:span 12;background:rgba(15,27,51,.72);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
@media(min-width:900px){
  .card:nth-child(1){grid-column:span 6}
  .card:nth-child(2){grid-column:span 6}
  .card:nth-child(3){grid-column:span 12}
}
h2{margin:0 0 10px;font-size:20px}
.muted{color:var(--muted)}
.tiny{font-size:12px}
.form{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:rgba(0,0,0,.14)}
.row span{flex:1;min-width:240px}
select{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:var(--text);padding:8px 10px;border-radius:10px;min-width:160px}
.result{margin-top:12px;border:1px dashed rgba(255,255,255,.22);border-radius:14px;padding:12px;background:rgba(0,0,0,.14);display:none}
.result.show{display:block}
.result .score{font-weight:900;font-size:18px}
.result .label{display:inline-block;margin-top:6px;padding:6px 10px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.05)}
.checklist{display:flex;flex-direction:column;gap:8px;margin:12px 0}
.checklist label{display:flex;gap:10px;align-items:flex-start;line-height:1.45;color:var(--muted)}
.checklist input{margin-top:3px}
.stack{padding:10px 0 26px}
.grid2{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:900px){.grid2{grid-template-columns:1fr 1fr}}
.tile{border:1px solid var(--line);border-radius:16px;padding:14px;background:rgba(0,0,0,.14)}
.tile:hover{border-color:rgba(255,255,255,.24);text-decoration:none}
.tile-title{font-weight:800;margin-bottom:6px}
.tile-sub{color:var(--muted);line-height:1.5}
.list{margin:0;padding-left:18px;color:var(--muted);line-height:1.6}
.footer{padding:20px 0 30px;border-top:1px solid var(--line)}
.footgrid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:900px){.footgrid{grid-template-columns:2fr 1fr 1fr}}
.foot-title{font-weight:800;margin-bottom:6px}