:root{
  --bg: #0f172a;        /* slate-900 */
  --fg: #e5e7eb;        /* gray-200 */
  --muted:#94a3b8;      /* slate-400 */
  --card:#111827;       /* gray-900 */
  --accent:#22d3ee;     /* cyan-400 */
  --ring:#38bdf8;       /* sky-400 */
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg,#0b1022 0%, #0f172a 100%);
  color:var(--fg);
  font:16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Noto Sans KR, Apple SD Gothic Neo, sans-serif;
}
.container{
  max-width:880px;
  padding:24px;
  margin:0 auto;
}
h1{font-size:28px;margin:24px 0 8px}
h2{font-size:22px;margin:0}
h3{font-size:16px;margin:20px 0 8px}
p{margin:8px 0}
ul{padding-left:20px;margin:8px 0}
.muted{color:var(--muted)}
.badge{
  display:inline-block;
  font-size:12px;
  padding:4px 10px;
  border:1px solid rgba(255,255,255,.15);
  border-radius:999px;
  color:var(--muted);
}
.card{
  background:radial-gradient(1200px 500px at 20% -20%, rgba(56,189,248,.15), transparent 60%),
             radial-gradient(1200px 600px at 110% 20%, rgba(34,211,238,.12), transparent 65%),
             var(--card);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;
  box-shadow:0 10px 30px rgba(0,0,0,.35);
  overflow:hidden;
}
.card-head{padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;gap:12px;align-items:center}
.ticker{
  font-weight:700;
  letter-spacing:.06em;
  padding:6px 10px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.04);
}
.name{opacity:.95}
.card-body{padding:18px 24px}
.footer{opacity:.7;text-align:center;margin:22px 0}
a{color:var(--accent);text-decoration:none}
a:hover{outline:2px solid var(--ring);outline-offset:2px;border-radius:6px}