:root {
  --bg: #0d1117; --panel: #161b22; --gold: #d4af37; --gold2: #f0d879;
  --text: #e6e9ef; --muted: #8b949e; --border: #2a3040; --radius: 14px;
}
* { box-sizing: border-box; margin: 0; }
body { background: var(--bg); color: var(--text);
  font: 15px/1.7 "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; }

/* 首屏 Hero：渐变 + 微光，"高端大气"的核心视觉 */
.hero { text-align: center; padding: 72px 20px 56px;
  background: radial-gradient(1200px 400px at 50% -80px, rgba(212,175,55,.18), transparent),
              linear-gradient(180deg, #11161f, var(--bg)); }
.topbar .brand { font-size: 20px; letter-spacing: 2px; color: var(--gold); font-weight: 700; }
.topbar .tagline { color: var(--muted); margin-left: 12px; font-size: 13px; }
.hero h1 { font-size: 42px; margin: 28px 0 10px; letter-spacing: 4px;
  background: linear-gradient(120deg, var(--gold2), var(--gold), #b8860b);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.slogan { color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.search { display: flex; max-width: 560px; margin: 0 auto; border: 1px solid var(--gold);
  border-radius: 999px; overflow: hidden; background: var(--panel); }
.search input { flex: 1; background: none; border: 0; padding: 14px 22px; color: var(--text); outline: none; }
.search button { background: linear-gradient(120deg, var(--gold2), var(--gold));
  color: #1a1a1a; border: 0; padding: 0 30px; font-weight: 700; cursor: pointer; }

/* 布局 */
.layout { display: grid; grid-template-columns: 200px 1fr; gap: 28px;
  max-width: 1200px; margin: 0 auto; padding: 0 20px 60px; }
.sidebar { position: sticky; top: 20px; align-self: start; display: flex; flex-direction: column; gap: 6px; }
.cat { padding: 10px 16px; border-radius: 10px; color: var(--muted); text-decoration: none; transition: .2s; }
.cat:hover { color: var(--text); background: var(--panel); }
.cat.active { color: #1a1a1a; font-weight: 700;
  background: linear-gradient(120deg, var(--gold2), var(--gold)); }
.breadcrumb { color: var(--muted); font-size: 13px; margin-bottom: 18px; }
.breadcrumb a { color: var(--gold); text-decoration: none; }

/* 链接卡片：悬浮金边动效 */
.group h2 { font-size: 18px; margin: 30px 0 14px; padding-left: 12px;
  border-left: 3px solid var(--gold); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.card { display: flex; gap: 12px; align-items: center; padding: 14px 16px;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  text-decoration: none; color: var(--text); transition: .25s; }
.card:hover { transform: translateY(-3px); border-color: var(--gold);
  box-shadow: 0 8px 24px rgba(212,175,55,.15); }
.card img { border-radius: 8px; background: #fff; padding: 2px; }
.card .info { display: flex; flex-direction: column; min-width: 0; }
.card strong { font-size: 15px; }
.card small { color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

footer { text-align: center; color: var(--muted); padding: 36px 0; font-size: 13px; }
footer a { color: var(--gold); text-decoration: none; }

/* 后台 */
.admin-nav { display: flex; gap: 20px; align-items: center; padding: 14px 28px;
  background: var(--panel); border-bottom: 1px solid var(--border); }
.admin-nav a { color: var(--muted); text-decoration: none; }
.admin-nav a:hover { color: var(--gold); }
.admin-nav .right { margin-left: auto; }
.admin-body { max-width: 1000px; margin: 28px auto; padding: 0 20px; }
.stats { display: flex; gap: 16px; margin-bottom: 24px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 30px; text-align: center; }
.stat b { font-size: 26px; color: var(--gold); display: block; }
.stat span { color: var(--muted); font-size: 13px; }
.panel { background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; margin-bottom: 22px; }
.panel input, .panel select, .panel textarea { display: block; width: 100%; margin: 8px 0 14px;
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; color: var(--text); }
.panel button, .tbl button { background: var(--gold); color: #1a1a1a; border: 0;
  border-radius: 8px; padding: 9px 20px; font-weight: 700; cursor: pointer; }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.inline-form input, .inline-form select { width: auto !important; margin: 0 !important; }
.tbl { width: 100%; border-collapse: collapse; background: var(--panel);
  border-radius: var(--radius); overflow: hidden; }
.tbl th, .tbl td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; }
.tbl th { color: var(--gold); font-size: 13px; }
.tbl small { color: var(--muted); }
.admin-login { display: grid; place-items: center; min-height: 100vh; }
.admin-login .panel { width: 360px; }
.err { color: #ff6b6b; } .ok { color: #7ee787; margin-bottom: 14px; }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; flex-direction: row; flex-wrap: wrap; }
  .hero h1 { font-size: 30px; }
}