:root {
  color-scheme: light dark;
  --text: #1c2024;
  --muted: #60646c;
  --surface: #ffffff;
  --border: #d9d9e0;
  --accent: #1f6feb;
  --accent-text: #ffffff;
  --warning-surface: #fff4e5;
  --warning-text: #7a4100;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #edeef0;
    --muted: #a0a4ab;
    --surface: #111214;
    --border: #2e3135;
    --accent: #4c8df6;
    --accent-text: #0b0d10;
    --warning-surface: #3a2a12;
    --warning-text: #ffcf8a;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

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

h2 {
  margin: 28px 0 8px;
  font-size: 16px;
}

.note {
  margin: 4px 0 20px;
  color: var(--muted);
  font-size: 14px;
}

.status {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 0 0 16px;
}

.status div {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.status dt {
  color: var(--muted);
  font-size: 13px;
}

.status dd {
  margin: 2px 0 0;
  font-weight: 600;
}

.notice {
  margin: 0 0 16px;
  padding: 12px;
  border-radius: 8px;
  background: var(--warning-surface);
  color: var(--warning-text);
}

button {
  width: 100%;
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.log {
  margin: 0;
  padding: 0;
  list-style: none;
  font: 13px/1.5 ui-monospace, 'Cascadia Mono', Consolas, monospace;
}

.log li {
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  overflow-wrap: anywhere;
}