/* ===== 全局 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #0d1117;
  color: #c9d1d9;
  line-height: 1.6;
}
a { color: #58a6ff; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== 导航栏 ===== */
.navbar {
  background: #161b22;
  border-bottom: 1px solid #30363d;
  position: sticky; top: 0; z-index: 100;
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
}
.logo { font-size: 20px; font-weight: bold; color: #58a6ff; }
.nav-links { display: flex; gap: 24px; list-style: none; }
.nav-links a { color: #c9d1d9; font-size: 14px; }
.nav-links a:hover { color: #58a6ff; text-decoration: none; }

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 80px 20px 60px;
  background: linear-gradient(135deg, #161b22 0%, #1f2937 100%);
  border-bottom: 1px solid #30363d;
}
.hero h1 { font-size: 40px; color: #f0f6fc; margin-bottom: 12px; }
.hero p { font-size: 18px; color: #8b949e; margin-bottom: 30px; }
.btn-primary {
  display: inline-block;
  background: #238636;
  color: white;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 16px;
  font-weight: bold;
}
.btn-primary:hover { background: #2ea043; text-decoration: none; color: white; }

/* ===== 通用段落 ===== */
.section { padding: 60px 20px; max-width: 1100px; margin: 0 auto; }
.section-alt { background: #161b22; }
.section h2 { font-size: 28px; color: #f0f6fc; margin-bottom: 8px; }
.section-desc { color: #8b949e; margin-bottom: 32px; }

/* ===== 工具卡片网格 ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.tool-card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 20px;
  transition: border-color 0.2s;
}
.tool-card:hover { border-color: #58a6ff; }
.tool-card .icon { font-size: 32px; margin-bottom: 10px; }
.tool-card h3 { color: #f0f6fc; font-size: 16px; margin-bottom: 6px; }
.tool-card .tag {
  display: inline-block;
  background: #1f2937;
  color: #8b949e;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 12px;
  margin-bottom: 8px;
}
.tool-card p { font-size: 13px; color: #8b949e; }
.tool-card a { font-size: 13px; }

/* ===== 文章列表 ===== */
.articles-list { display: flex; flex-direction: column; gap: 16px; }
.article-card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.article-card h3 { color: #f0f6fc; font-size: 16px; margin-bottom: 4px; }
.article-card .meta { font-size: 13px; color: #8b949e; }
.article-card .read-more { font-size: 14px; white-space: nowrap; }

/* ===== 攻略卡片 ===== */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.guide-card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 24px;
}
.guide-card h3 { color: #f0f6fc; font-size: 16px; margin-bottom: 8px; }
.guide-card p { font-size: 14px; color: #8b949e; margin-bottom: 12px; }
.guide-card .tag {
  display: inline-block;
  background: #1f2937;
  color: #8b949e;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 12px;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid #30363d;
  color: #8b949e;
  font-size: 13px;
}
.footer p { margin-bottom: 6px; }

/* ===== 分类标题 ===== */
.category-title {
  color: #f0f6fc;
  font-size: 18px;
  margin: 28px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid #21262d;
}
.category-title:first-child {
  margin-top: 0;
}

/* ===== 赚钱攻略卡片可点击 ===== */
.guide-card:hover {
  border-color: #58a6ff;
  transform: translateY(-2px);
  transition: all 0.2s;
}

/* ===== 响应式 ===== */
@media (max-width: 600px) {
  .hero h1 { font-size: 28px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 13px; }
}