:root{
  --bg1:#0a0c14; --bg2:#161a2b; --warm:#e9b86a; --warm2:#f4d79a;
  --ink:#e7e3d8; --muted:#9aa0b5; --line:#2a3048;
  --aritmetica:#e9b86a; --geometria:#7bb0e0; --musica:#8ad6b1; --cosmologia:#b79ae0;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  min-height:100vh; color:var(--ink);
  font-family:'Iowan Old Style','Palatino Linotype',Palatino,Georgia,serif;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(233,184,106,.16), rgba(233,184,106,0) 55%),
    radial-gradient(140% 120% at 50% 100%, var(--bg2), var(--bg1) 70%);
  padding:44px 18px 70px; line-height:1.55;
}
.topo{text-align:center; max-width:760px; margin:0 auto}
.topo h1{font-size:clamp(28px,5vw,44px); margin:0 0 6px; color:var(--warm2);
  letter-spacing:.5px; text-shadow:0 0 18px rgba(233,184,106,.25)}
.topo .sub{color:var(--muted); font-style:italic; margin:0}
.topo .intro{color:#cfd3e0; font-size:16px; max-width:620px; margin:10px auto 0}
.grade{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); gap:20px;
  max-width:960px; margin:38px auto 0;
}
.card{
  position:relative; background:linear-gradient(180deg,#171b2c,#10131f);
  border:1px solid var(--line); border-radius:16px; padding:22px;
  display:flex; flex-direction:column; gap:10px;
  transition:transform .18s ease, border-color .2s ease, box-shadow .25s ease;
}
.card:hover{transform:translateY(-3px); border-color:var(--warm); box-shadow:0 10px 30px rgba(0,0,0,.4)}
.badge{align-self:flex-start; font-size:12px; letter-spacing:1.5px; text-transform:uppercase;
  padding:4px 11px; border-radius:999px; border:1px solid currentColor; color:var(--muted)}
.arte-Música{color:var(--musica)}
.arte-Geometria{color:var(--geometria)}
.arte-Aritmética{color:var(--aritmetica)}
.arte-Cosmologia{color:var(--cosmologia)}
.card h2{margin:2px 0 0; font-size:22px; color:var(--ink)}
.card .meta{color:var(--muted); font-size:13.5px; margin:-4px 0 2px}
.card p{color:#c8ccdb; font-size:14.5px; margin:0; flex:1}
.card .jogar{align-self:flex-start; margin-top:8px; text-decoration:none; font-size:14.5px;
  font-weight:600; padding:9px 18px; border-radius:999px;
  background:linear-gradient(180deg,#caa15a,#a9823f); color:#1a130a}
.card .jogar:hover{filter:brightness(1.08)}
.card.embreve{opacity:.62}
.card .tag-breve{align-self:flex-start; margin-top:8px; font-size:13px; color:var(--muted); font-style:italic}
.rodape{margin-top:42px; text-align:center; color:#6a708a; font-size:12.5px; font-style:italic}