:root {
  --brand: #6c5ce7;
  --brand-soft: #efedfd;
  --ink: #1a1b20;
  --muted: #6e727b;
  --hair: #ecedf0;
  --paper: #f5f5f7;
  --card: #ffffff;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased;
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px;
}

.sheet {
  width: 100%; max-width: 480px; background: var(--card);
  border: 1px solid var(--hair); border-radius: 18px; padding: 40px 36px 30px;
}

.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 18px; letter-spacing: -0.01em; margin: 0 0 28px; }
.brand .dot { width: 11px; height: 11px; border-radius: 50%; background: var(--brand); }

.kicker { font-size: 13px; font-weight: 600; color: var(--brand); margin: 0 0 10px; }
h1 { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 12px; }
.lede { margin: 0 0 28px; color: var(--muted); }

.play {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 16px 20px; border-radius: 14px;
  background: var(--ink); color: #ffffff; text-decoration: none;
  font-weight: 600; font-size: 16px; transition: background .15s ease;
}
.play:hover { background: #000000; }
.play svg { width: 18px; height: 18px; flex: none; }

.open { margin: 14px 0 0; text-align: center; font-size: 14px; color: var(--muted); }
.open a { color: var(--brand); font-weight: 600; text-decoration: none; }

.code {
  margin-top: 26px; padding: 16px 18px;
  border: 1px solid var(--hair); border-radius: 14px;
  font-size: 13.5px; line-height: 1.55; color: var(--muted);
}
.code strong {
  display: block; margin-top: 8px; color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 18px; letter-spacing: 0.08em;
}

footer { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--hair); font-size: 13px; color: var(--muted); }
footer a { color: var(--muted); }

@media (max-width: 520px) {
  .sheet { padding: 32px 22px 26px; border-radius: 16px; }
  h1 { font-size: 23px; }
}