/* 3DHOT 的全部样式。换风格先改这里的变量：颜色、字体、宽度。 */
:root {
  --bg: #fafaf8;
  --fg: #1d1f21;
  --muted: #6b7075;
  --line: #e4e4e0;
  --card: #ffffff;
  --accent: #2b7a4b;      /* Three.js 绿 */
  --accent-2: #3d7bbf;    /* Godot 蓝 */
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --width: 760px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131518;
    --fg: #e6e6e3;
    --muted: #8f959b;
    --line: #2a2e33;
    --card: #1a1d21;
    --accent: #5cc48a;
    --accent-2: #6fa8e6;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.7 var(--font); }
a { color: inherit; }
main, .top, footer { max-width: var(--width); margin: 0 auto; padding: 0 16px; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 20px; padding-bottom: 20px; }
.brand { font: 700 20px/1 var(--mono); text-decoration: none; letter-spacing: .02em; }
.top nav { display: flex; gap: 18px; }
.top nav a, .filters a { text-decoration: none; color: var(--muted); }
.top nav a[aria-current], .filters a[aria-current] { color: var(--fg); font-weight: 600; }

.filters { display: flex; flex-wrap: wrap; gap: 6px 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 8px; font-size: 14px; }

.day { margin: 28px 0 8px; font-size: 13px; font-weight: 600; color: var(--muted); }
.card { padding: 14px 0; border-bottom: 1px solid var(--line); }
.card h2 { margin: 4px 0; font-size: 17px; line-height: 1.5; }
.card h2 a { text-decoration: none; }
.card h2 a:hover { color: var(--accent); }
.card p { margin: 4px 0; color: var(--muted); font-size: 14px; }

.meta { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; color: var(--muted); font-size: 12px; }
.cat { font-family: var(--mono); padding: 1px 6px; border-radius: 4px; border: 1px solid var(--line); color: var(--fg); }
.cat-engine, .cat-tutorial { border-color: var(--accent); color: var(--accent); }
.cat-showcase, .cat-industry { border-color: var(--accent-2); color: var(--accent-2); }

.reason { border-left: 2px solid var(--accent); padding-left: 10px; }

.detail h1 { font-size: 26px; line-height: 1.4; margin: 10px 0; }
.original-title { color: var(--muted); font-size: 14px; margin-top: 0; }
.summary { font-size: 17px; }
.button { display: inline-block; padding: 8px 14px; border-radius: 6px; background: var(--fg); color: var(--bg); text-decoration: none; font-size: 14px; }
.topics { display: flex; flex-wrap: wrap; gap: 8px; }
.topics a { font-size: 13px; padding: 2px 8px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; }

.definition, .empty { color: var(--muted); }
.topic-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; }
.topic-list li { display: flex; align-items: baseline; justify-content: space-between; padding: 8px 12px; background: var(--card); border: 1px solid var(--line); border-radius: 6px; }
.topic-list a { text-decoration: none; }
.topic-list span { color: var(--muted); font-family: var(--mono); font-size: 13px; }
.archive { padding-left: 18px; font-family: var(--mono); }
.lead { padding: 12px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; }
.lead h2 { margin: 0 0 6px; font-size: 19px; }

footer { margin-top: 48px; padding-top: 16px; padding-bottom: 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; font-size: 14px; color: var(--muted); }
.pager a { text-decoration: none; color: var(--fg); }