/* ===== 基础重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --text: #c9d1d9;
  --text2: #8b949e;
  --primary: #00ff88;
  --secondary: #4fc3f7;
  --accent: #ff6b6b;
  --hack: #00ff88;
  --seo: #4fc3f7;
  --tool: #ffb74d;
  --news: #f06292;
  --radius: 8px;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
}
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: #fff; }
img { max-width: 100%; }

/* ===== 容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部导航 ===== */
.site-header {
  background: rgba(13,17,23,0.95);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(10px);
}
.header-inner {
  display: flex; align-items: center; gap: 24px;
  height: 60px;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 18px; font-weight: 700; color: #fff;
  white-space: nowrap;
}
.logo-icon { font-size: 22px; }
.logo-text { background: linear-gradient(90deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.main-nav { display: flex; gap: 4px; flex: 1; }
.main-nav a {
  padding: 6px 12px; border-radius: var(--radius);
  color: var(--text2); font-size: 14px; transition: all 0.2s;
}
.main-nav a:hover { background: var(--bg3); color: var(--text); }
.header-search { display: flex; }
.header-search form { display: flex; gap: 0; }
.header-search input {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius) 0 0 var(--radius);
  color: var(--text); padding: 6px 12px; font-size: 13px;
  width: 180px; outline: none;
}
.header-search input:focus { border-color: var(--primary); }
.header-search button {
  background: var(--primary); border: none; border-radius: 0 var(--radius) var(--radius) 0;
  padding: 6px 12px; cursor: pointer; font-size: 14px;
}

/* ===== 主布局 ===== */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  padding: 24px 20px;
  align-items: start;
}

/* ===== 页面标题 ===== */
.page-header { margin-bottom: 20px; }
.page-header h1 { font-size: 22px; color: #fff; margin-bottom: 4px; }
.page-header p { color: var(--text2); font-size: 13px; }
.page-header strong { color: var(--primary); }

/* ===== 分类标签栏 ===== */
.cat-tabs { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.cat-tabs a {
  padding: 6px 14px; border-radius: 20px;
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text2); font-size: 13px; transition: all 0.2s;
}
.cat-tabs a:hover, .cat-tabs a.active {
  background: var(--primary); color: #000; border-color: var(--primary); font-weight: 600;
}

/* ===== 文章卡片网格 ===== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}
.article-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.2s;
  display: flex; flex-direction: column; gap: 10px;
}
.article-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.card-header { display: flex; align-items: center; justify-content: space-between; }
.cat-badge {
  font-size: 11px; font-weight: 600; padding: 3px 8px;
  border-radius: 4px; color: #000;
}
.card-date { font-size: 12px; color: var(--text2); }
.card-title { font-size: 16px; line-height: 1.5; }
.card-title a { color: var(--text); }
.card-title a:hover { color: var(--primary); }
.card-summary { font-size: 13px; color: var(--text2); line-height: 1.6; flex: 1; }
.card-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.card-tags { display: flex; gap: 4px; flex-wrap: wrap; }
.tag {
  font-size: 11px; padding: 2px 7px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 3px; color: var(--text2);
}
.read-more { font-size: 13px; color: var(--primary); white-space: nowrap; }
.read-more:hover { color: #fff; }
.empty { text-align: center; padding: 60px; color: var(--text2); }

/* ===== 分页 ===== */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 32px; flex-wrap: wrap; }
.page-btn {
  padding: 8px 16px; border-radius: var(--radius);
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text2); font-size: 14px; transition: all 0.2s;
}
.page-btn:hover, .page-btn.active {
  background: var(--primary); color: #000; border-color: var(--primary); font-weight: 600;
}

/* ===== 侧边栏 ===== */
.sidebar { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 80px; }
.sidebar-widget {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.sidebar-widget h3 { font-size: 14px; color: #fff; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }

/* TG引流组件 */
.tg-widget { background: linear-gradient(135deg, #0d1117 0%, #1a2332 100%); border-color: #1e3a5f; }
.tg-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--radius);
  margin-bottom: 8px; transition: all 0.2s; color: #fff;
}
.tg-btn:last-child { margin-bottom: 0; }
.tg-hack { background: rgba(0,255,136,0.1); border: 1px solid rgba(0,255,136,0.3); }
.tg-hack:hover { background: rgba(0,255,136,0.2); color: #fff; }
.tg-seo { background: rgba(79,195,247,0.1); border: 1px solid rgba(79,195,247,0.3); }
.tg-seo:hover { background: rgba(79,195,247,0.2); color: #fff; }
.tg-icon { font-size: 24px; }
.tg-btn strong { display: block; font-size: 13px; }
.tg-btn small { font-size: 11px; color: var(--text2); }

/* 侧边栏文章列表 */
.article-list-sm { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.article-list-sm li { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; }
.article-list-sm a { color: var(--text); line-height: 1.4; flex: 1; }
.article-list-sm a:hover { color: var(--primary); }
.article-list-sm small { color: var(--text2); font-size: 11px; white-space: nowrap; }
.cat-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; margin-top: 6px; }

/* 分类链接 */
.cat-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 0; border-bottom: 1px solid var(--border);
  color: var(--text); font-size: 13px; transition: color 0.2s;
}
.cat-link:last-child { border-bottom: none; }
.cat-link:hover { color: var(--primary); }
.cat-arrow { color: var(--text2); }

/* ===== 文章详情页 ===== */
.article-full { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.article-header { padding: 28px 32px 20px; border-bottom: 1px solid var(--border); }
.article-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.meta-date, .meta-views { font-size: 13px; color: var(--text2); }
.article-title { font-size: 26px; color: #fff; line-height: 1.4; margin-bottom: 12px; }
.article-tags { display: flex; gap: 6px; flex-wrap: wrap; }

/* Markdown正文 */
.article-body { padding: 28px 32px; }
.markdown-body h1, .markdown-body h2, .markdown-body h3 { color: #fff; margin: 24px 0 12px; }
.markdown-body h1 { font-size: 22px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.markdown-body h2 { font-size: 18px; }
.markdown-body h3 { font-size: 16px; color: var(--primary); }
.markdown-body p { margin-bottom: 16px; color: var(--text); }
.markdown-body ul, .markdown-body ol { margin: 12px 0 16px 24px; }
.markdown-body li { margin-bottom: 6px; }
.markdown-body code {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 4px; padding: 2px 6px; font-family: 'Courier New', monospace;
  font-size: 13px; color: var(--primary);
}
.markdown-body pre {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; overflow-x: auto;
  margin: 16px 0;
}
.markdown-body pre code { background: none; border: none; padding: 0; color: var(--text); }
.markdown-body blockquote {
  border-left: 3px solid var(--primary); padding: 8px 16px;
  background: rgba(0,255,136,0.05); margin: 16px 0; border-radius: 0 var(--radius) var(--radius) 0;
}
.markdown-body a { color: var(--secondary); }
.markdown-body strong { color: #fff; }
.markdown-body table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.markdown-body th { background: var(--bg3); padding: 10px; border: 1px solid var(--border); text-align: left; color: #fff; }
.markdown-body td { padding: 8px 10px; border: 1px solid var(--border); }
.markdown-body tr:hover td { background: var(--bg3); }

/* 文章底部CTA */
.article-footer { padding: 24px 32px; border-top: 1px solid var(--border); }
.tg-cta { background: linear-gradient(135deg, #0d1117, #1a2332); border: 1px solid #1e3a5f; border-radius: var(--radius); padding: 24px; text-align: center; }
.tg-cta h3 { font-size: 18px; color: #fff; margin-bottom: 8px; }
.tg-cta p { color: var(--text2); font-size: 14px; margin-bottom: 16px; }
.cta-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta-btn { padding: 10px 24px; border-radius: var(--radius); font-weight: 600; font-size: 14px; transition: all 0.2s; }
.cta-hack { background: var(--hack); color: #000; }
.cta-hack:hover { background: #00cc6a; color: #000; }
.cta-seo { background: var(--seo); color: #000; }
.cta-seo:hover { background: #29b6f6; color: #000; }

/* ===== 搜索页 ===== */
.search-form-big { display: flex; gap: 0; margin-bottom: 24px; }
.search-form-big input {
  flex: 1; background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius) 0 0 var(--radius); color: var(--text);
  padding: 10px 16px; font-size: 15px; outline: none;
}
.search-form-big input:focus { border-color: var(--primary); }
.search-form-big button {
  background: var(--primary); border: none; border-radius: 0 var(--radius) var(--radius) 0;
  padding: 10px 20px; font-size: 15px; cursor: pointer; font-weight: 600; color: #000;
}

/* ===== 关于页 ===== */
.about-page { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; }
.about-hero { text-align: center; margin-bottom: 40px; }
.about-icon { font-size: 48px; display: block; margin-bottom: 12px; }
.about-hero h1 { font-size: 28px; color: #fff; margin-bottom: 8px; }
.about-hero p { color: var(--text2); }
.about-content h2 { font-size: 18px; color: var(--primary); margin: 24px 0 12px; }
.about-content p, .about-content li { color: var(--text); margin-bottom: 8px; }
.about-content ul { margin-left: 20px; }
.about-tg { display: flex; gap: 12px; margin: 16px 0; flex-wrap: wrap; }
.disclaimer { color: var(--text2); font-size: 13px; margin-top: 24px; padding: 12px; background: var(--bg3); border-radius: var(--radius); }

/* ===== 错误页 ===== */
.error-page { text-align: center; padding: 80px 20px; }
.error-page h1 { font-size: 80px; color: var(--primary); }
.error-page p { color: var(--text2); margin: 16px 0; }
.error-page a { background: var(--primary); color: #000; padding: 10px 24px; border-radius: var(--radius); font-weight: 600; }

/* ===== 页脚 ===== */
.site-footer { background: var(--bg2); border-top: 1px solid var(--border); margin-top: 40px; }
.footer-inner { display: flex; gap: 40px; padding: 32px 0 24px; flex-wrap: wrap; }
.footer-brand { flex: 1; min-width: 200px; }
.footer-brand .logo-icon { font-size: 20px; }
.footer-brand p { color: var(--text2); font-size: 13px; margin-top: 8px; }
.footer-links { display: flex; gap: 40px; flex-wrap: wrap; }
.footer-links > div { display: flex; flex-direction: column; gap: 8px; }
.footer-links strong { color: #fff; font-size: 14px; margin-bottom: 4px; }
.footer-links a { color: var(--text2); font-size: 13px; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--border); padding: 16px 0; text-align: center; }
.footer-bottom p { color: var(--text2); font-size: 12px; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .main-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .article-grid { grid-template-columns: 1fr; }
  .main-nav { display: none; }
  .header-search input { width: 140px; }
}
@media (max-width: 600px) {
  .article-header, .article-body, .article-footer { padding: 16px; }
  .article-title { font-size: 20px; }
  .footer-inner { flex-direction: column; gap: 24px; }
}