:root{
  --bg:#eef2f6;--bg-deep:#e2e8f0;--surface:#ffffff;--ink:#0b1220;--muted:#5b6b7c;
  --line:#c9d4e0;--accent:#0f766e;--accent-2:#0284c7;--accent-soft:#ccfbf1;
  --dfe:#0369a1;--dfe-soft:#e0f2fe;--dsbd:#b45309;--dsbd-soft:#ffedd5;
  --iia:#be123c;--iia-soft:#ffe4e6;--ok:#059669;--warn:#d97706;--bad:#dc2626;
  --shadow:0 1px 0 rgba(15,23,42,.04),0 18px 40px -24px rgba(15,23,42,.35);
  --radius:16px;--font:"Outfit",system-ui,sans-serif;--mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;min-height:100vh;font-family:var(--font);color:var(--ink);
  background:
    radial-gradient(900px 480px at 8% -10%,#b8e6df 0%,transparent 55%),
    radial-gradient(700px 420px at 100% 0%,#bfdbfe 0%,transparent 50%),
    linear-gradient(180deg,var(--bg) 0%,var(--bg-deep) 100%);
  background-attachment:fixed;line-height:1.5;
}
a{color:var(--accent)}
a:hover{color:var(--ink)}
.wrap{width:min(1100px,calc(100% - 2rem));margin:0 auto}
.aula-top{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:1.25rem 0 .5rem;
}
.brand{display:inline-flex;align-items:center;gap:.55rem;margin:0;font-weight:700;
  font-size:1.15rem;letter-spacing:-.02em;text-decoration:none;color:inherit}
.brand-mark{width:.7em;height:.7em;border-radius:.2em;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent) 0%,#38bdf8 100%);
  box-shadow:0 8px 20px -6px rgba(15,118,110,.55)}
.brand-mark.dfe{background:linear-gradient(135deg,var(--dfe),#38bdf8)}
.brand-mark.dsbd{background:linear-gradient(135deg,var(--dsbd),#fbbf24)}
.brand-mark.iia{background:linear-gradient(135deg,var(--iia),#fb7185)}
.eyebrow{font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0}
.panel,.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:1.15rem 1.25rem;margin:1rem 0;
}
h1{font-size:clamp(1.45rem,3vw,1.9rem);letter-spacing:-.02em;line-height:1.15;margin:.2rem 0 .75rem}
h2{font-size:1.1rem;letter-spacing:-.01em;margin:1.1rem 0 .5rem}
p,li{font-size:.98rem}
.muted,.meta{color:var(--muted);font-size:.88rem}
code,.path,pre{
  font-family:var(--mono);font-size:.82rem;
}
code{background:#f1f5f9;padding:.12em .35em;border-radius:6px}
pre{background:#0f172a;color:#e2e8f0;padding:.85rem 1rem;border-radius:12px;overflow:auto}
label{display:block;font-size:.78rem;font-weight:500;color:var(--muted);margin:0 0 .35rem}
input,textarea,select,button{
  font:inherit;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink);padding:.6rem .75rem;width:100%;
}
input:focus,textarea:focus,select:focus{outline:2px solid color-mix(in srgb,var(--accent) 45%,transparent);border-color:var(--accent)}
button,.btn{
  background:linear-gradient(180deg,#0f766e,#0d9488);border:0;color:#fff;
  font-weight:600;cursor:pointer;width:auto;display:inline-flex;align-items:center;
  justify-content:center;gap:.35rem;padding:.65rem 1.1rem;text-decoration:none;
}
button:hover,.btn:hover{filter:brightness(1.05)}
button.ghost,.btn.ghost{background:#e2e8f0;color:var(--ink)}
button:disabled{opacity:.45;cursor:not-allowed}
.stack{display:grid;gap:.75rem}
.station-list{list-style:none;padding:0;margin:1rem 0;display:grid;gap:.55rem}
.station-list a{
  display:flex;flex-direction:column;gap:.2rem;padding:.9rem 1rem;border-radius:14px;
  border:1px solid var(--line);background:#f8fafc;text-decoration:none;color:inherit;
  transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease;
}
.station-list a:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 40%,var(--line));
  box-shadow:0 12px 24px -18px rgba(15,23,42,.4)}
.station-list strong{font-size:.98rem}
.station-list span{font-family:var(--mono);font-size:.72rem;color:var(--accent)}
.table-wrap{overflow:auto;border-radius:14px;border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;font-size:.92rem;background:var(--surface)}
th,td{padding:.65rem .75rem;text-align:left;border-bottom:1px solid var(--line)}
th{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);background:#f8fafc}
tr:last-child td{border-bottom:0}
.pill{display:inline-flex;align-items:center;font-size:.75rem;font-weight:500;
  border:1px solid var(--line);border-radius:999px;padding:.3rem .7rem;background:color-mix(in srgb,#fff 80%,transparent)}
.footer-aula{margin:2rem 0 2.5rem;color:var(--muted);font-size:.8rem}
.footer-aula a{color:inherit}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.station-list a{transition:none}}