:root {
  --ink: #17251f;
  --ink-soft: #5f6f68;
  --ink-faint: #8a9892;
  --line: #e3ebe7;
  --card: #ffffff;
  --accent: #0f9f75;
  --accent-soft: #e5f5ee;
  --card-w: 264px;
  --thumb-scale: 0.275; /* 作品按 960×720 渲染再缩到卡片宽：264 / 960 */
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
  background:
    radial-gradient(1100px 520px at 0% -10%, #e2f4ec 0%, transparent 60%),
    radial-gradient(900px 480px at 100% 0%, #e6f0f9 0%, transparent 55%),
    #f5f8f7;
  -webkit-font-smoothing: antialiased;
}

.page { max-width: 1480px; margin: 0 auto; padding: 28px 32px 56px; }

.hero h1 { margin: 0; font-size: 24px; font-weight: 700; letter-spacing: .5px; }
.subtitle { margin: 4px 0 0; color: var(--ink-soft); font-size: 14px; }

/* ---------- 工具条：分组切换 + 说明 ---------- */
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin: 22px 0 10px;
}
.tabs {
  display: flex; gap: 2px; flex-wrap: wrap; padding: 4px;
  background: rgba(255, 255, 255, .7); border: 1px solid var(--line); border-radius: 10px;
}
.tab {
  border: 0; background: transparent; border-radius: 7px; padding: 6px 12px; cursor: pointer;
  font: inherit; font-size: 13px; color: var(--ink-soft); white-space: nowrap;
}
.tab:hover { color: var(--ink); background: rgba(255, 255, 255, .9); }
.tab.active { background: #fff; color: var(--ink); font-weight: 600; box-shadow: 0 1px 4px rgba(16, 40, 30, .08); }
.tab .count { margin-left: 6px; color: var(--ink-faint); font-weight: 400; font-variant-numeric: tabular-nums; }

.meta { display: flex; align-items: center; gap: 18px; color: var(--ink-soft); font-size: 13px; flex-wrap: wrap; }
.meta-item:empty { display: none; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px;
  border: 1px solid transparent; border-radius: 8px; background: transparent; color: var(--ink-soft); cursor: pointer;
}
.icon-btn:hover { background: #fff; border-color: var(--line); color: var(--ink); }
.icon-btn.spin svg { animation: spin .8s linear; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 分组 ---------- */
.group { margin-top: 26px; }
.group-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.pv {
  flex: 0 0 36px; width: 36px; height: 36px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px; color: #fff;
}
.pv-openai { background: #10a37f; }
.pv-anthropic { background: #d97757; }
.pv-gemini { background: #4285f4; }
.pv-deepseek { background: #4d6bfe; }
.pv-other { background: #8a94a6; }
.group-head h2 { margin: 0; font-size: 18px; font-weight: 700; line-height: 1.3; }
.group-sub { margin: 2px 0 0; color: var(--ink-soft); font-size: 13px; }

.strip {
  display: flex; gap: 16px; overflow-x: auto; padding: 2px 2px 14px;
  scroll-snap-type: x proximity; scrollbar-width: thin; scrollbar-color: #c9d6d0 transparent;
}
.strip::-webkit-scrollbar { height: 8px; }
.strip::-webkit-scrollbar-thumb { background: #c9d6d0; border-radius: 4px; }

/* ---------- 作品卡片 ---------- */
.card {
  flex: 0 0 var(--card-w); width: var(--card-w); scroll-snap-align: start;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  color: inherit; text-decoration: none;
  box-shadow: 0 1px 2px rgba(16, 40, 30, .04);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.card:hover, .card:focus-visible {
  transform: translateY(-2px); border-color: #cfe3da; outline: none;
  box-shadow: 0 8px 22px rgba(16, 40, 30, .10);
}
.thumb { position: relative; width: 100%; aspect-ratio: 4 / 3; overflow: hidden; background: #f1f5f3; }
.thumb iframe {
  position: absolute; top: 0; left: 0; width: 960px; height: 720px; border: 0;
  transform: scale(var(--thumb-scale)); transform-origin: 0 0; pointer-events: none;
}
.info { padding: 10px 14px 12px; display: grid; gap: 4px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-width: 0; }
.model {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.effort { flex: 0 0 auto; font-size: 12px; color: var(--ink-soft); background: #f2f5f4; border-radius: 6px; padding: 1px 7px; }
.row.sub { font-size: 12px; color: var(--ink-faint); font-variant-numeric: tabular-nums; }

.waiting {
  flex: 0 0 var(--card-w); aspect-ratio: 4 / 3.6; border: 1px dashed #cddbd4; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; text-align: center; padding: 16px;
  color: var(--ink-faint); font-size: 13px; background: rgba(255, 255, 255, .5);
}

.empty { margin: 80px 0; text-align: center; color: var(--ink-faint); font-size: 14px; }

@media (max-width: 640px) {
  :root { --card-w: 216px; --thumb-scale: 0.225; }
  .page { padding: 20px 14px 40px; }
  .hero h1 { font-size: 21px; }
  .meta { gap: 12px; font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
}