:root {
  color-scheme: light;
  --bg: #0f172a;
  --card: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-press: #0ea5e9;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  min-height: 100vh;
  padding: 48px 24px calc(32px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 20px;
}

h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
}

.hint {
  margin: 0;
  min-height: 3em;
  color: var(--muted);
  line-height: 1.5;
  font-size: 14px;
}

button {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 16px;
  font-weight: 600;
  color: #0f172a;
  background: var(--accent);
}

button:active {
  background: var(--accent-press);
}

button:disabled {
  opacity: 0.55;
}