:root {
  --bg: #11141a;
  --bg-soft: #1a1f28;
  --card: #222833;
  --card-hover: #2b3240;
  --line: #323a48;
  --text: #e8edf5;
  --muted: #8b95a8;
  --accent: #7dd3c0;
  --accent-dim: #3d6f66;
  --danger: #f0a0a0;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  --radius: 16px;
  --font: "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 500px at 10% -10%, #1d3a36 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 16px 24px;
  background: rgba(17, 20, 26, 0.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 700; letter-spacing: 0.02em; white-space: nowrap; }
.brand small { display: block; font-weight: 400; color: var(--muted); font-size: 12px; }

.search {
  flex: 1;
  min-width: 0;
}
.search input {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 16px;
  outline: none;
}
.search input:focus { border-color: var(--accent-dim); }

.actions { display: flex; gap: 8px; align-items: center; }
.btn {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font: inherit;
}
.btn:hover { background: var(--card-hover); }
.btn-accent { background: var(--accent); color: #10221e; border-color: transparent; font-weight: 650; }
.btn-accent:hover { filter: brightness(1.05); }

main { width: min(1120px, calc(100% - 32px)); margin: 28px auto 80px; }

.cat { margin-bottom: 28px; }
.cat-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  font-size: 18px;
}
.badge {
  font-size: 11px;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 999px;
  padding: 1px 8px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.card {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-height: 76px;
}
.card:hover { background: var(--card-hover); transform: translateY(-1px); }
.mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: #151a22;
  color: var(--accent);
  font-weight: 700;
  flex: none;
}
.meta { min-width: 0; }
.meta strong { display: block; font-size: 15px; }
.meta span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hidden { display: none !important; }

.dialog {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: grid;
  place-items: center;
  z-index: 40;
}
.panel {
  width: min(420px, calc(100% - 32px));
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
}
.panel h2 { margin: 0 0 14px; font-size: 18px; }
.panel label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 6px; }
.panel input, .panel select, .panel textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
}
.row { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.err { color: var(--danger); font-size: 13px; min-height: 18px; }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding-bottom: 24px;
}