:root {
  color-scheme: light dark;
  --bg: #f5f5f5;
  --card-bg: #ffffff;
  --text: rgba(0, 0, 0, 0.88);
  --text-secondary: #595959;
  --text-tertiary: #8c8c8c;
  --border: #f0f0f0;
  --table-head: #fafafa;
  --link: #1677ff;
  --success-bg: #f6ffed;
  --success-border: #b7eb8f;
  --success-text: #389e0d;
  --info-bg: #e6f4ff;
  --info-border: #91caff;
  --info-text: #0958d9;
  --warning-bg: #fffbe6;
  --warning-border: #ffe58f;
  --warning-text: #ad6800;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141414;
    --card-bg: #1f1f1f;
    --text: rgba(255, 255, 255, 0.88);
    --text-secondary: #a6a6a6;
    --text-tertiary: #8c8c8c;
    --border: #303030;
    --table-head: #262626;
    --link: #4096ff;
    --success-bg: #162312;
    --success-border: #274916;
    --success-text: #95de64;
    --info-bg: #111a2c;
    --info-border: #15325b;
    --info-text: #69b1ff;
    --warning-bg: #2b2111;
    --warning-border: #594214;
    --warning-text: #ffd666;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  padding: 40px 16px;
}
.card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--card-bg);
  border-radius: 12px;
  padding: 48px 56px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}
h1 {
  font-size: 30px;
  margin-bottom: 8px;
}
h2 {
  font-size: 20px;
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
h3 {
  font-size: 16px;
  margin: 24px 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.meta {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}
.meta p {
  margin: 4px 0;
}
p {
  margin: 12px 0;
}
ul {
  padding-left: 20px;
}
li {
  margin: 6px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}
th,
td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
}
th {
  background: var(--table-head);
}
code {
  background: var(--table-head);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 13px;
}
a {
  color: var(--link);
}
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}
footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
  text-align: center;
}

/* 页头 */
.page-header {
  text-align: center;
  margin-bottom: 48px;
}
.page-header .subtitle {
  color: var(--text-secondary);
  font-size: 16px;
}

/* 目录 */
.toc {
  background: var(--table-head);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 28px;
  margin-bottom: 48px;
}
.toc .toc-title {
  display: block;
  margin-bottom: 12px;
  font-weight: 600;
}
.toc a {
  display: block;
  margin-bottom: 6px;
  text-decoration: none;
}
.toc a:hover {
  text-decoration: underline;
}

/* 章节 */
section {
  margin-bottom: 48px;
}

/* 标签 */
.tag {
  display: inline-block;
  font-size: 12px;
  line-height: 20px;
  padding: 0 8px;
  border-radius: 4px;
  border: 1px solid transparent;
}
.tag-success {
  color: var(--success-text);
  background: var(--success-bg);
  border-color: var(--success-border);
}
.tag-processing {
  color: var(--info-text);
  background: var(--info-bg);
  border-color: var(--info-border);
}
.tag-purple {
  color: #9254de;
  background: #f9f0ff;
  border-color: #d3adf7;
}
.tag-blue {
  color: #1677ff;
  background: #e6f4ff;
  border-color: #91caff;
}
.tag-green {
  color: #389e0d;
  background: #f6ffed;
  border-color: #b7eb8f;
}
.tag-cyan {
  color: #08979c;
  background: #e6fffb;
  border-color: #87e8de;
}
.tag-red {
  color: #cf1322;
  background: #fff1f0;
  border-color: #ffa39e;
}
@media (prefers-color-scheme: dark) {
  .tag-purple {
    color: #d3adf7;
    background: #2a1438;
    border-color: #51258f;
  }
  .tag-blue {
    color: #91caff;
    background: #111a2c;
    border-color: #15325b;
  }
  .tag-green {
    color: #95de64;
    background: #162312;
    border-color: #274916;
  }
  .tag-cyan {
    color: #87e8de;
    background: #112123;
    border-color: #144848;
  }
  .tag-red {
    color: #ffa39e;
    background: #2a1215;
    border-color: #58181c;
  }
}

/* 提示条 */
.alert {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  border: 1px solid;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  margin: 16px 0;
}
.alert .alert-icon {
  flex-shrink: 0;
}
.alert-info {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: var(--info-text);
}
.alert-success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-text);
}
.alert-warning {
  background: var(--warning-bg);
  border-color: var(--warning-border);
  color: var(--warning-text);
}

/* 步骤 */
.steps {
  margin: 16px 0;
  padding: 0;
  list-style: none;
}
.step-item {
  display: flex;
  gap: 12px;
  padding-bottom: 20px;
  position: relative;
}
.step-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 26px;
  bottom: 0;
  width: 1px;
  background: var(--border);
}
.step-index {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--link);
  color: var(--link);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
}
.step-title {
  font-weight: 600;
  margin-bottom: 2px;
}
.step-desc {
  color: var(--text-secondary);
  font-size: 14px;
}

/* 首页导航 */
.nav-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}
.nav-list li {
  margin: 0 0 12px;
}
.nav-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  text-decoration: none;
  color: var(--text);
}
.nav-card:hover {
  border-color: var(--link);
}
.nav-card .nav-card-title {
  font-weight: 600;
  margin-bottom: 4px;
}
.nav-card .nav-card-desc {
  color: var(--text-secondary);
  font-size: 13px;
}