:root{
  --bg:#0b1220; --panel:rgba(255,255,255,.06); --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.72); --line:rgba(255,255,255,.12); --btn:rgba(255,255,255,.10);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
a{color:var(--text)}
.muted{color:var(--muted)}

.frameShell{height:100%;display:flex;flex-direction:column}
.frameShell__bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-bottom:1px solid var(--line);background:rgba(0,0,0,.2)
}
.frameShell__title{font-weight:600;letter-spacing:.2px}
.frameShell__nav{display:flex;gap:10px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:8px 10px;border:1px solid var(--line);border-radius:10px;
  background:var(--btn);text-decoration:none
}
.btn--primary{border-color:rgba(80,140,255,.55);background:rgba(80,140,255,.18)}
.frameShell__hint{
  padding:10px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--muted)
}
.frameShell__iframe{flex:1;border:0;width:100%}

.page{max-width:980px;margin:0 auto;padding:18px}
.page__header{display:flex;flex-direction:column;gap:10px;margin:10px 0 18px}
.page__footer{margin-top:22px}
.card{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:16px;margin:0 0 12px}
.link{text-decoration:none;border-bottom:1px solid rgba(255,255,255,.35);padding-bottom:2px}
.link:hover{border-bottom-color:rgba(255,255,255,.7)}