:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1a1d29;
  --muted: #677085;
  --line: #e4e8f0;
  --brand: #1e3a8a;
  --brand-2: #334155;
  --ok: #0f766e;
  --err: #b91c1c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC","Microsoft YaHei",sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--brand); text-decoration: none; }
.container { width: min(1200px, 92vw); margin: 0 auto; }
.site-header {
  background: linear-gradient(120deg, #e0e7ff, #f8fafc);
  border-bottom: 1px solid var(--line);
}
.site-header.thin { background: #fff; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}
.brand { font-size: 20px; font-weight: 700; color: #0f172a; }
.admin-link { color: var(--brand-2); }
.hero { padding: 30px 0 34px; }
.hero h1 { margin: 0; font-size: 34px; }
.hero p { color: var(--muted); margin: 10px 0 20px; }
.search { display: flex; gap: 8px; }
.search input {
  flex: 1;
  min-width: 200px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
}
.search button {
  border: 0;
  background: var(--brand);
  color: #fff;
  border-radius: 10px;
  padding: 0 16px;
  cursor: pointer;
}
.layout { display: grid; grid-template-columns: 280px 1fr; gap: 20px; padding: 24px 0; }
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}
.panel h2 { margin: 0 0 12px; font-size: 18px; }
.chip {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--brand-2);
}
.chip.active { background: #dbeafe; color: #1d4ed8; font-weight: 600; }
.list-head p { margin: 2px 0 14px; color: var(--muted); }
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card h3 { margin: 0; font-size: 18px; line-height: 1.5; }
.meta, .foot {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}
.card p { margin: 0; color: #344256; line-height: 1.7; }
.pager {
  margin: 22px 0;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.pager a {
  min-width: 32px;
  text-align: center;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
}
.pager a.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.empty {
  padding: 40px;
  text-align: center;
  color: var(--muted);
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--line);
}
.footer {
  margin-top: 26px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 20px 0 34px;
}

.article-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 20px;
  padding: 26px 0;
}
.article-main {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}
.article-meta {
  color: var(--muted);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.article-main h1 { margin: 0 0 18px; line-height: 1.45; }
.cover {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 18px;
}
.article-content { line-height: 1.9; color: #20293d; }
.article-content h2, .article-content h3 { margin-top: 28px; }
.related-item {
  display: block;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}

.admin-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.admin-card {
  width: min(980px, 100%);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.admin-form {
  display: grid;
  gap: 12px;
}
.admin-form input, .admin-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  margin-top: 6px;
}
.admin-form select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  margin-top: 6px;
  background: #fff;
}
.admin-form button, .admin-actions button {
  border: 0;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  padding: 10px 14px;
  cursor: pointer;
}
.admin-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.msg { padding: 10px 12px; border-radius: 10px; }
.msg.ok { background: #ecfeff; color: var(--ok); }
.msg.err { background: #fef2f2; color: var(--err); }
.admin-list { display: grid; gap: 10px; margin-top: 12px; }
.admin-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}
.admin-row p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.admin-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; }
  .article-wrap { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .hero h1 { font-size: 28px; }
  .cards { grid-template-columns: 1fr; }
}