:root {
  --bg: #0f0f13;
  --surface: #18181f;
  --surface-soft: #14141a;
  --border: #2a2a35;
  --accent: #7c6fe0;
  --accent-soft: #4f46a8;
  --text: #e8e8f0;
  --muted: #8888a8;
  --danger: #e05555;
  --danger-soft: #3a1a1a;
  --ok: #5dca8a;
}

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

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  padding: 2rem 1rem;
}

.container {
  max-width: 820px;
  margin: 0 auto;
}

header {
  margin-bottom: 2.2rem;
  padding-bottom: 1.3rem;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-size: 1.58rem;
  font-weight: 700;
}

h1 span {
  color: var(--accent);
}

.subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.nav a {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 0.35rem 0.65rem;
  font-size: 0.86rem;
}

.nav a.active {
  border-color: var(--accent-soft);
  color: #cec8ff;
}

.badge {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.78rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 1.4rem;
}

h2 {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 2.1rem;
  margin-bottom: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h2::before {
  content: '';
  display: block;
  width: 3px;
  height: 1.1em;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}

p {
  margin-bottom: 0.75rem;
}

ul {
  padding-left: 1.4rem;
  margin-bottom: 0.75rem;
}

li {
  margin-bottom: 0.35rem;
}

.table-wrap {
  overflow-x: auto;
  margin-bottom: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th {
  background: var(--surface);
  color: var(--muted);
  font-weight: 600;
  text-align: left;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border);
}

td {
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

tr:nth-child(even) td {
  background: var(--surface-soft);
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

.tag-opt {
  background: #1e3a2a;
  color: #5dca8a;
}

.tag-req {
  background: #1e1e3a;
  color: #7c9fdd;
}

.callout {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
  padding: 0.85rem 1rem;
  margin: 1rem 0;
  font-size: 0.93rem;
}

.callout.info {
  border-color: var(--ok);
}

.callout.danger {
  border-color: var(--danger);
  background: var(--danger-soft);
}

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

a:hover {
  text-decoration: underline;
}

.cmd {
  font-family: "Consolas", "Courier New", monospace;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  font-size: 0.88em;
  color: #a9f0a0;
}

.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  margin-bottom: 0.75rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.step-num {
  background: var(--accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.note {
  color: var(--muted);
  font-size: 0.88rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}