/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: #f6f8fa;
  color: #24292f;
  line-height: 1.6;
}

/* ── 导航栏 ── */
.site-nav {
  background: #fff;
  border-bottom: 1px solid #d0d7de;
  padding: .8rem 1.5rem;
}
.site-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-nav-brand {
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  color: #24292f;
}
.site-nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.site-nav-links a {
  text-decoration: none;
  color: #0969da;
  font-size: .9rem;
}
.site-nav-lang {
  padding: 2px 8px;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  font-size: .8rem;
  color: #656d76;
}
.site-nav-lang:hover {
  border-color: #0969da;
  color: #0969da;
}

/* ── Hero ── */
.site-hero {
  background: linear-gradient(135deg, #24292f 0%, #0d1117 100%);
  color: #fff;
  padding: 3rem 1.5rem 2rem;
  text-align: center;
}
.site-hero h1 { font-size: 2rem; margin-bottom: .3rem; }
.site-hero .tagline { color: #8b949e; font-size: 1rem; margin-bottom: 1rem; }
.site-hero .stats {
  display: flex;
  gap: 2rem;
  justify-content: center;
  font-size: .85rem;
  color: #8b949e;
}
.site-hero .stats span { color: #58a6ff; font-weight: 600; }

/* ── 内容容器 ── */
.site-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* ── 日期分组 ── */
.date-group { margin-bottom: 1rem; }
.date-label {
  font-size: .85rem;
  font-weight: 600;
  color: #656d76;
  padding: .3rem 0;
  border-bottom: 1px solid #d0d7de;
  margin-bottom: .5rem;
}

/* ── 报告卡片 ── */
.report-list { display: flex; flex-direction: column; gap: .4rem; }
.report-link {
  display: flex;
  align-items: center;
  gap: .8rem;
  background: #fff;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  padding: .8rem 1rem;
  text-decoration: none;
  color: inherit;
  transition: box-shadow .15s, border-color .15s;
}
.report-link:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  border-color: #0969da;
}
.report-type {
  color: #fff;
  font-size: .75rem;
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.report-sources { display: flex; gap: .3rem; }
.source-badge {
  font-size: .65rem;
  padding: 1px 6px;
  border-radius: 4px;
  color: #fff;
  font-weight: 600;
}

/* ── 页脚 ── */
.site-footer {
  text-align: center;
  padding: 2rem;
  color: #656d76;
  font-size: .8rem;
}
.site-footer a { color: #0969da; text-decoration: none; }

/* ── 空状态 ── */
.site-empty {
  text-align: center;
  color: #656d76;
  margin-top: 3rem;
  font-size: 1.1rem;
}

/* ── 英文特定 ── */
html[lang="en"] .site-hero h1 { letter-spacing: -0.02em; }