/* Base */
:root {
  --bg: #0b1220;
  --bg-grad-1: #0b1220;
  --bg-grad-2: #0f172a;
  --bg-grad-3: #0b1328;
  --card: #0f172a;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --brand: #22c55e;
  --accent: #60a5fa;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, "Noto Sans", sans-serif;
  background: radial-gradient(1200px 600px at 20% 10%, rgba(96, 165, 250, 0.12), transparent 60%),
              radial-gradient(900px 500px at 80% 30%, rgba(34, 197, 94, 0.12), transparent 60%),
              linear-gradient(180deg, var(--bg-grad-1) 0%, var(--bg-grad-2) 60%, var(--bg-grad-3) 100%);
  color: var(--text);
  line-height: 1.65;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

.site-header {
  position: sticky; top: 0; backdrop-filter: saturate(180%) blur(8px);
  background: rgba(11, 18, 32, .7);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  z-index: 10;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .4px; }
.site-nav a { color: var(--muted); text-decoration: none; margin-left: 16px; }
.site-nav a:hover { color: var(--text); }

main .lede { color: var(--muted); }

form[role="search"] { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin: 16px 0 24px; }
input[type="search"] {
  background: var(--card);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
}
button { background: var(--brand); border: 0; color: #0b1220; border-radius: 999px; padding: 12px 20px; font-weight: 700; letter-spacing: .3px; }
button:hover { filter: brightness(1.1); cursor: pointer; }

.grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid rgba(148, 163, 184, 0.12); border-radius: 16px; overflow: hidden; }
.card-link { display: block; color: inherit; text-decoration: none; }
.thumb { aspect-ratio: 16/9; background: #0b1220; overflow: hidden; }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-body { padding: 12px 14px 16px; }
.code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; background: rgba(148, 163, 184, 0.12); padding: 2px 6px; border-radius: 6px; }
.muted { color: var(--muted); }

.site-footer { border-top: 1px solid rgba(148, 163, 184, 0.12); margin-top: 32px; }
.site-footer .container { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.site-footer a { color: var(--muted); text-decoration: none; margin-left: 12px; }
.site-footer a:hover { color: var(--text); }

@media (max-width: 640px) {
  .site-footer .container { flex-direction: column; gap: 8px; }
}