/* ============================================
   GEO Wiki 样式 — 给 AI 看的知识库
   设计原则：简洁、结构化、机器友好
   ============================================ */

:root {
  --bg: #ffffff;
  --bg-sidebar: #f8f9fa;
  --bg-code: #f1f3f5;
  --bg-quick-answer: #e8f5e9;
  --bg-callout: #fff8e1;
  --text: #1a1a2e;
  --text-muted: #495057;
  --text-light: #868e96;
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --border: #e5e7eb;
  --border-light: #f0f0f0;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
}

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

/* ============ 布局 ============ */

.wiki-wrapper {
  display: flex;
  min-height: 100vh;
}

.wiki-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 24px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.wiki-main {
  flex: 1;
  min-width: 0;
  padding: 40px 60px 80px;
  max-width: 900px;
}

/* ============ 侧边栏 ============ */

.wiki-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.wiki-logo span {
  color: var(--primary);
}

.wiki-nav-section {
  margin-bottom: 20px;
}
.wiki-nav-section h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 8px;
}
.wiki-nav-section ul {
  list-style: none;
}
.wiki-nav-section li {
  margin-bottom: 2px;
}
.wiki-nav-section a {
  display: block;
  padding: 6px 12px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all 0.15s;
}
.wiki-nav-section a:hover {
  background: var(--primary-light);
  color: var(--primary);
  text-decoration: none;
}
.wiki-nav-section a.active {
  background: var(--primary);
  color: #fff;
  font-weight: 500;
}

/* ============ 面包屑 ============ */

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 24px;
}
.breadcrumb a {
  color: var(--text-light);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  margin: 0 8px;
  color: var(--border);
}

/* ============ 页面标题 ============ */

.wiki-page h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.page-meta {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

/* ============ 快速答案 ============ */

.quick-answer {
  background: var(--bg-quick-answer);
  border-left: 4px solid #4caf50;
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 36px;
  font-size: 1.05rem;
  line-height: 1.8;
}
.quick-answer strong {
  color: #2e7d32;
}

/* ============ 内容区域 ============ */

.wiki-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-light);
}

.wiki-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 28px 0 12px;
}

.wiki-content p {
  margin-bottom: 16px;
  color: var(--text-muted);
}

.wiki-content ul,
.wiki-content ol {
  margin: 12px 0 20px 24px;
  color: var(--text-muted);
}
.wiki-content li {
  margin-bottom: 6px;
}

/* ============ 表格 ============ */

.wiki-table-wrapper {
  overflow-x: auto;
  margin: 20px 0;
}

.wiki-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.wiki-table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
}
.wiki-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}
.wiki-table tr:nth-child(even) {
  background: var(--bg-sidebar);
}
.wiki-table tr:hover {
  background: var(--primary-light);
}

/* ============ 提示框 ============ */

.callout {
  background: var(--bg-callout);
  border-left: 4px solid #ffc107;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.95rem;
}
.callout.info {
  background: var(--primary-light);
  border-left-color: var(--primary);
}
.callout.tip {
  background: var(--bg-quick-answer);
  border-left-color: #4caf50;
}

/* ============ FAQ ============ */

.faq-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 2px solid var(--border);
}

.faq-section h2 {
  border-bottom: none;
  margin-top: 0;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  padding: 16px 20px;
  font-weight: 600;
  background: var(--bg-sidebar);
  cursor: pointer;
}
.faq-answer {
  padding: 0 20px 16px;
}
.faq-answer p:last-child {
  margin-bottom: 0;
}

/* ============ 内链卡片 ============ */

.related-links {
  margin-top: 40px;
  padding: 24px;
  background: var(--bg-sidebar);
  border-radius: var(--radius);
}
.related-links h3 {
  font-size: 1rem;
  margin-bottom: 12px;
}
.related-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.related-links li {
  margin-bottom: 6px;
}
.related-links a {
  font-size: 0.95rem;
}

/* ============ 目录（页面内） ============ */

.toc {
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 32px;
}
.toc h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}
.toc ol {
  margin: 0;
  padding-left: 20px;
  line-height: 2;
}
.toc a {
  font-size: 0.9rem;
}

/* ============ 步骤 ============ */

.step {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}
.step-content h3 {
  margin-top: 2px;
}

/* ============ 页脚 ============ */

.wiki-footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-light);
  display: flex;
  justify-content: space-between;
}

/* ============ 移动端 ============ */

.menu-toggle {
  display: none;
  cursor: pointer;
  padding: 8px;
}

@media (max-width: 900px) {
  .wiki-sidebar {
    display: none;
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    height: 100vh;
    width: 280px;
    box-shadow: 2px 0 12px rgba(0,0,0,0.1);
  }
  .wiki-sidebar.open {
    display: block;
  }
  .menu-toggle {
    display: block;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 101;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 12px;
  }
  .wiki-main {
    padding: 60px 20px 40px;
  }
  .wiki-page h1 {
    font-size: 1.5rem;
  }
}