:root {
  --bg: #fafafa;
  --ink: #1a1a1a;
  --accent: #2b5ea7;
  --muted: #555;
  --border: #e0e0e0;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

a:hover {
  color: #1a4a8a;
}

code {
  overflow-wrap: anywhere;
  word-break: break-word;
  font-family: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  font-size: 0.9em;
  background: #f0f0f0;
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.draft-notice {
  border: 1px solid var(--accent);
  padding: 0.75rem 1rem;
  margin-bottom: 2rem;
  font-size: 0.95rem;
  background: #f0f4fa;
}

.placeholder {
  border: 1px dashed var(--accent);
  padding: 0.5rem 0.75rem;
  margin: 0.75rem 0;
  font-size: 0.9rem;
  background: #f8f9fb;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

@media (max-width: 480px) {
  .container {
    padding: 1.5rem 1rem 3rem;
  }

  h1 {
    font-size: 1.5rem;
  }
}