:root {
  --bg-dark: #0a0c0f;
  --panel-dark: #12151a;
  --panel-soft: #171b21;
  --line-dark: #252b34;
  --text-main: #f2f5f8;
  --text-sub: #a3adbb;
  --accent: #e8edf7;
  --chip: #1f2530;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.58;
}

a {
  text-decoration: none;
}

.list-page {
  background: var(--bg-dark);
  color: var(--text-main);
}

.feed-topbar.dark {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(10, 12, 15, 0.94);
  border-bottom: 1px solid var(--line-dark);
  backdrop-filter: blur(6px);
}

.topbar-inner.wide {
  width: min(1680px, calc(100% - 36px));
  margin: 0 auto;
  height: 68px;
  display: grid;
  grid-template-columns: 240px 1fr 260px;
  align-items: center;
  gap: 16px;
}

.brand-pill {
  width: fit-content;
  background: #ff355f;
  color: #fff;
  font-weight: 800;
  border-radius: 11px;
  padding: 8px 14px;
  font-size: 1.02rem;
  letter-spacing: 0.2px;
}

.search-box.dark input {
  width: 100%;
  height: 40px;
  border-radius: 999px;
  border: 1px solid #1c212a;
  background: #0f1318;
  color: #d8e0eb;
  padding: 0 16px;
  font-size: 0.92rem;
}

.right-links {
  display: flex;
  justify-content: flex-end;
  gap: 16px;
}

.right-links a {
  color: #b5bfcc;
  font-size: 0.9rem;
}

.app-shell {
  width: min(1680px, calc(100% - 36px));
  margin: 16px auto 8px;
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 20px;
}

.left-rail {
  position: sticky;
  top: 86px;
  align-self: start;
  display: grid;
  gap: 10px;
}

.rail-item {
  display: block;
  padding: 12px 14px;
  border-radius: 12px;
  background: #0f1318;
  color: #d5deeb;
  border: 1px solid #171d27;
  font-weight: 600;
}

.rail-item.active {
  background: #1a1f29;
  color: #fff;
}

.rail-card {
  margin-top: 8px;
  border: 1px solid var(--line-dark);
  border-radius: 14px;
  padding: 14px;
  background: #0f1318;
}

.rail-card strong {
  display: block;
  margin-bottom: 8px;
}

.rail-card p {
  margin: 0;
  color: var(--text-sub);
  font-size: 0.88rem;
}

.feed-stage {
  min-width: 0;
}

.channel-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.channel-tabs a {
  color: #c2cbda;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid #1d232e;
  background: #0f1318;
  font-size: 0.9rem;
}

.channel-tabs a.active {
  color: #fff;
  background: #2a313d;
}

.feed-result {
  margin: 0 0 10px;
  color: var(--text-sub);
  font-size: 0.84rem;
}

.feed-grid {
  column-count: 5;
  column-gap: 14px;
}

.post-card {
  display: inline-block;
  width: 100%;
  break-inside: avoid;
  margin: 0 0 14px;
  padding: 10px;
  border-radius: 14px;
  background: var(--panel-dark);
  border: 1px solid var(--line-dark);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.post-card:hover {
  transform: translateY(-2px);
  border-color: #374051;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}

.card-main {
  display: block;
  color: inherit;
}

.keyword-visual.dark {
  min-height: 190px;
  border-radius: 12px;
  border: 1px solid #2a313d;
  background:
    radial-gradient(circle at 20% 20%, rgba(90, 110, 150, 0.3), transparent 50%),
    linear-gradient(145deg, #1e2430, #151920);
  padding: 14px;
  display: grid;
  align-content: end;
  gap: 4px;
  margin-bottom: 10px;
}

.keyword-visual span {
  font-weight: 800;
  font-size: 1.22rem;
  color: #f0f4fa;
  line-height: 1.22;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.3);
}

.post-card h2 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  line-height: 1.38;
  color: #f4f7fb;
}

.desc {
  margin: 0 0 10px;
  color: #d0d8e5;
  font-size: 0.9rem;
}

.chips {
  margin: 0 0 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chips a {
  color: #bfc9d8;
  border: 1px solid #2b3240;
  background: var(--chip);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.82rem;
}

.meta {
  margin: 0;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: #99a5b5;
  font-size: 0.82rem;
}

.heat {
  color: #bfc8d6;
}

.actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}

.btn {
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.84rem;
  border: 1px solid #2d3645;
  color: #dbe4f2;
  background: #1a202a;
}

.btn-secondary {
  background: #131822;
  color: #c2ccdc;
}

.pager {
  margin: 10px 0 0;
  display: flex;
  gap: 8px;
}

.pager a {
  border: 1px solid #2b3342;
  background: #11161e;
  color: #ccd5e3;
  border-radius: 8px;
  min-width: 34px;
  text-align: center;
  padding: 6px 10px;
}

.pager a.active {
  background: #2b3341;
  color: #fff;
}

.site-footer {
  width: min(1680px, calc(100% - 36px));
  margin: 20px auto 0;
  padding: 14px 0 28px;
  border-top: 1px solid #202632;
  color: #8e99aa;
  font-size: 0.86rem;
}

.post-page,
.admin-page {
  background: #f6f8fb;
  color: #10141a;
}

.post-page .site-header {
  border-bottom: 1px solid #e6ecf4;
  background: #fff;
  padding: 18px 0;
  margin-bottom: 14px;
}

.container {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
}

.logo {
  color: inherit;
  font-size: 1.35rem;
  font-weight: 800;
}

.site-subtitle {
  margin: 6px 0 0;
  color: #647182;
}

.post-detail,
.related,
.admin article {
  border: 1px solid #e2e9f2;
  border-radius: 12px;
  background: #fff;
  padding: 16px;
}

.related ul {
  margin: 0;
  padding-left: 20px;
}

.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

textarea {
  width: 100%;
  border: 1px solid #d7e0eb;
  border-radius: 8px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
}

.empty {
  color: #8a97a9;
}

@media (max-width: 1480px) {
  .feed-grid {
    column-count: 4;
  }
}

@media (max-width: 1240px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .left-rail {
    position: static;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .rail-card {
    grid-column: 1 / -1;
  }

  .feed-grid {
    column-count: 3;
  }
}

@media (max-width: 980px) {
  .topbar-inner.wide {
    grid-template-columns: 1fr;
    height: auto;
    padding: 10px 0;
  }

  .right-links {
    justify-content: flex-start;
  }

  .feed-grid {
    column-count: 2;
  }
}

@media (max-width: 700px) {
  .feed-grid {
    column-count: 1;
  }

  .left-rail {
    grid-template-columns: 1fr 1fr;
  }

  .admin-grid {
    grid-template-columns: 1fr;
  }
}