:root {
  --bg: #fafafa;
  --text: #1f1f1f;
  --muted: #666;
  --border: #e0e0e0;
  --link: #1565c0;
  --todo-bg: #fff3a0;
  --todo-text: #6b5d00;
  --code-bg: #eee;
  --th-bg: #f0f0f0;
  --banner-bg: #fff8d4;
  --banner-border: #d4a017;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  margin: 0;
  padding: 1rem;
}

main {
  max-width: 720px;
  margin: 0 auto;
}

h1 { font-size: 1.7rem; margin-top: 1.5rem; }
h2 { font-size: 1.3rem; margin-top: 2rem; border-bottom: 1px solid var(--border); padding-bottom: .3rem; }
h3 { font-size: 1.1rem; margin-top: 1.5rem; }

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

a { color: var(--link); }
a:hover { text-decoration: none; }

code {
  background: var(--code-bg);
  padding: .1em .3em;
  border-radius: 3px;
  font-size: .9em;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: .95rem;
}

th, td {
  border: 1px solid var(--border);
  padding: .5rem .7rem;
  text-align: left;
  vertical-align: top;
}

th { background: var(--th-bg); }

em { color: var(--muted); }

.todo {
  background: var(--todo-bg);
  color: var(--todo-text);
  padding: 0 .3em;
  border-radius: 3px;
  font-style: normal;
  font-weight: 600;
}

.lang-switch {
  text-align: right;
  font-size: .9rem;
  margin-bottom: 1rem;
  color: var(--muted);
}

.lang-switch a { margin-left: .5rem; }

.draft-banner {
  background: var(--banner-bg);
  border-left: 4px solid var(--banner-border);
  padding: .8rem 1rem;
  margin-bottom: 1.5rem;
  border-radius: 4px;
  font-size: .95rem;
}

.lang-picker {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 3rem;
  align-items: center;
}

.lang-picker a {
  display: inline-block;
  padding: .8rem 2rem;
  background: white;
  border: 1px solid var(--border);
  border-radius: 6px;
  text-decoration: none;
  min-width: 220px;
  text-align: center;
}

.lang-picker a:hover { background: #f5f5f5; }