:root {
  color-scheme: dark;
  --bg: #08111d;
  --card: #101b2d;
  --line: rgba(255,255,255,0.08);
  --text: #f3f7ff;
  --muted: #9fb0cc;
  --accent: #7c8cff;
}
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: linear-gradient(180deg, #08111d 0%, #050b14 100%);
  color: var(--text);
}
.page {
  width: min(920px, calc(100% - 32px));
  margin: 32px auto 48px;
}
.hero { margin-bottom: 24px; }
.hero h1 { margin: 0 0 8px; }
.hero p { margin: 0; color: var(--muted); }
.card {
  background: rgba(16, 27, 45, 0.88);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  margin-bottom: 18px;
}
.card h2 { margin-top: 0; }
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
label { display: grid; gap: 8px; margin-bottom: 14px; }
label span { color: var(--muted); font-size: 14px; }
input {
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 0 12px;
}
button {
  height: 42px;
  padding: 0 16px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(135deg, var(--accent), #6577ff 55%, #8b6dff);
  color: white;
  font-weight: 700;
  cursor: pointer;
}
.result {
  margin-top: 14px;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: #cfe0ff;
  white-space: pre-wrap;
  word-break: break-word;
}
@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
}