/* AI 早报 · 深色主题 */
:root {
  --bg: #0e1116;
  --card: #161b23;
  --border: #262e3a;
  --text: #e8ecf1;
  --muted: #98a2b3;
  --faint: #6b7688;
  --accent: #f2a93b;
  --accent-soft: rgba(242, 169, 59, 0.12);
  --link: #7db8f0;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.8;
  font-size: 16px;
}

.topbar {
  height: 3px;
  background: linear-gradient(90deg, #f2a93b, #e2574c 55%, #7db8f0);
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 页眉 */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}
.header-in {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--text);
  text-decoration: none;
}
.brand::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 10px;
  vertical-align: 1px;
}
.tagline {
  color: var(--faint);
  font-size: 13px;
  letter-spacing: 1px;
}

/* 日期与标题 */
.date-label {
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 2px;
  margin: 36px 0 8px;
}
.day-title {
  font-size: 30px;
  line-height: 1.4;
  margin: 0 0 28px;
  letter-spacing: 1px;
}

/* 资讯卡片 */
.cards {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px 20px 72px;
}
.card .num {
  position: absolute;
  left: 22px;
  top: 24px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card h2 {
  font-size: 18px;
  line-height: 1.6;
  margin: 0 0 10px;
}
.card p {
  margin: 0 0 10px;
  color: #c9d1dd;
  font-size: 15px;
  text-align: justify;
}
.card p:last-child { margin-bottom: 0; }
.card a { color: var(--link); text-decoration: none; border-bottom: 1px dotted var(--link); }
.card a:hover { border-bottom-style: solid; }
.card strong { color: var(--text); }

/* 天内导航 */
.day-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 32px 0 8px;
}
.nav-btn {
  flex: 1;
  text-align: center;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  background: var(--card);
}
.nav-btn:hover { border-color: var(--accent); }
.nav-btn.disabled { color: var(--faint); cursor: default; }
.nav-btn.disabled:hover { border-color: var(--border); }

/* 往期归档 */
.archive { margin: 44px 0 12px; }
.archive h2 {
  font-size: 18px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}
.archive ul { list-style: none; margin: 0; padding: 0; }
.archive li { border-top: 1px solid var(--border); }
.archive li:last-child { border-bottom: 1px solid var(--border); }
.archive li a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 4px;
  color: var(--text);
  text-decoration: none;
}
.archive li a:hover .arch-title { color: var(--accent); }
.arch-date { color: var(--faint); font-size: 13px; white-space: nowrap; }
.arch-title { flex: 1; font-size: 15px; }
.arch-count {
  color: var(--accent);
  font-size: 12px;
  background: var(--accent-soft);
  border-radius: 20px;
  padding: 2px 10px;
  white-space: nowrap;
}

/* 页脚 */
.site-footer {
  margin-top: 56px;
  border-top: 1px solid var(--border);
  padding: 22px 0 34px;
  color: var(--faint);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 560px) {
  .day-title { font-size: 24px; }
  .card { padding: 18px 18px 16px 60px; }
  .card .num { left: 16px; top: 20px; width: 28px; height: 28px; font-size: 13px; }
  .arch-date { display: none; }
}