/* 视觉对齐 polybuzz.ai：近黑底 + 紫色强调 + 卡片网格信息流 */
:root {
  --bg: #0b0b0f;
  --bg-2: #121218;
  --card: #16161d;
  --card-hi: #1d1d26;
  --line: #26262f;
  --fg: #ececf1;
  --fg-2: #9a9aa8;
  --fg-3: #6b6b78;
  --accent: #7c5cff;
  --accent-2: #a78bfa;
  --gold: #e8b339;
  --sidebar-w: 240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--fg);
  font: 14px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ---- 布局 ---- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  border-right: 1px solid var(--line); background: var(--bg);
  position: sticky; top: 0; height: 100vh; overflow-y: auto; padding: 18px 0;
}
.brand {
  display: flex; align-items: center; gap: 9px;
  padding: 4px 20px 22px; font-size: 19px; font-weight: 700; letter-spacing: -.02em;
}
.brand .dot {
  width: 26px; height: 26px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #ff7ac6);
  display: grid; place-items: center; font-size: 14px;
}
.brand b { background: linear-gradient(90deg, #fff, var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav a {
  display: flex; align-items: center; gap: 11px;
  padding: 10px 20px; color: var(--fg-2); border-left: 2px solid transparent;
}
.nav a:hover { color: var(--fg); background: var(--bg-2); }
.nav a.on { color: var(--fg); background: var(--bg-2); border-left-color: var(--accent); }
.nav .ico { width: 18px; text-align: center; opacity: .85; }
.side-foot { padding: 18px 20px; color: var(--fg-3); font-size: 12px; line-height: 1.7; }

.main { flex: 1; min-width: 0; }
.topbar {
  position: sticky; top: 0; z-index: 20; background: rgba(11,11,15,.9);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--line);
  padding: 12px 24px; display: flex; align-items: center; gap: 14px;
}
.search {
  flex: 1; max-width: 460px; display: flex; align-items: center; gap: 8px;
  background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 8px 15px;
}
.search input { flex: 1; background: none; border: 0; color: var(--fg); outline: none; font-size: 14px; }
.search input::placeholder { color: var(--fg-3); }
.content { padding: 22px 24px 60px; }

/* ---- 统计条 ---- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 22px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 13px; padding: 14px 16px; }
.stat .n { font-size: 22px; font-weight: 700; letter-spacing: -.02em; }
.stat .k { color: var(--fg-3); font-size: 12px; margin-top: 3px; }

/* ---- 筛选 ---- */
.filters { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 8px; align-items: center; }
.chip {
  padding: 6px 13px; border-radius: 999px; background: var(--card);
  border: 1px solid var(--line); color: var(--fg-2); cursor: pointer;
  font-size: 13px; white-space: nowrap; transition: .12s;
}
.chip:hover { color: var(--fg); border-color: #3a3a46; }
.chip.on { background: var(--fg); color: #000; border-color: var(--fg); font-weight: 600; }
.sec-title { font-size: 17px; font-weight: 700; margin: 26px 0 12px; letter-spacing: -.01em; }

/* ---- 卡片网格 ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(214px, 1fr)); gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden; cursor: pointer; transition: .14s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-3px); border-color: #3d3d4c; background: var(--card-hi); }
.card .thumb { position: relative; aspect-ratio: 3/4; background: var(--bg-2); overflow: hidden; }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.card .thumb .ph { width: 100%; height: 100%; display: grid; place-items: center; color: var(--fg-3); font-size: 30px; }
.card .cnt {
  position: absolute; left: 8px; bottom: 8px; display: flex; align-items: center; gap: 4px;
  background: rgba(0,0,0,.62); backdrop-filter: blur(4px);
  padding: 3px 8px; border-radius: 999px; font-size: 11.5px; color: #fff;
}
.card .body { padding: 10px 11px 12px; }
.card .name { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.card .brief { color: var(--fg-2); font-size: 12.5px; line-height: 1.5; height: 2.9em; overflow: hidden; }
.clamp2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.tag { font-size: 10.5px; padding: 2px 7px; border-radius: 5px; background: #23232c; color: var(--fg-2); }

/* ---- 详情页 ---- */
.detail-head { display: flex; gap: 22px; margin-bottom: 22px; flex-wrap: wrap; }
.detail-head .pic { width: 220px; flex: 0 0 220px; aspect-ratio: 3/4; border-radius: 14px; overflow: hidden; background: var(--bg-2); }
.detail-head .pic img { width: 100%; height: 100%; object-fit: cover; }
.detail-head .meta { flex: 1; min-width: 260px; }
.detail-head h1 { margin: 0 0 8px; font-size: 26px; letter-spacing: -.02em; }
.byline { color: var(--fg-2); margin-bottom: 10px; }
.byline a { color: var(--accent-2); }
.numbers { display: flex; gap: 20px; color: var(--fg-2); font-size: 13px; margin-bottom: 12px; }
.numbers b { color: var(--fg); font-size: 15px; }
.desc { color: var(--fg-2); margin: 12px 0; max-width: 62ch; }
.tabs { display: flex; gap: 22px; border-bottom: 1px solid var(--line); margin: 24px 0 18px; }
.tabs button {
  background: none; border: 0; color: var(--fg-3); font-size: 15px; padding: 9px 0;
  cursor: pointer; border-bottom: 2px solid transparent; font-family: inherit;
}
.tabs button.on { color: var(--fg); border-bottom-color: var(--accent); font-weight: 600; }
.greet {
  background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 10px; padding: 13px 16px; margin-bottom: 10px; white-space: pre-wrap;
  color: var(--fg); line-height: 1.65;
}
.cmt { border-bottom: 1px solid var(--line); padding: 13px 0; }
.cmt .who { display: flex; align-items: center; gap: 9px; margin-bottom: 5px; font-size: 13px; }
.cmt .who b { font-weight: 600; }
.cmt .who .liked { font-size: 10.5px; background: #3b2a5e; color: var(--accent-2); padding: 1px 6px; border-radius: 5px; }
.cmt .who time { color: var(--fg-3); font-size: 12px; }
.cmt .txt { color: var(--fg-2); white-space: pre-wrap; }
.cmt .re { color: var(--fg-3); font-size: 12px; margin-top: 4px; }

/* ---- 洞察页 ---- */
.bars { display: flex; flex-direction: column; gap: 9px; }
.bar-row { display: grid; grid-template-columns: 128px 1fr 84px; align-items: center; gap: 12px; font-size: 13px; }
.bar-row .lab { color: var(--fg-2); text-align: right; }
.bar-row .track { background: var(--bg-2); border-radius: 6px; height: 22px; overflow: hidden; }
.bar-row .fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 6px; }
.bar-row .val { color: var(--fg-2); font-variant-numeric: tabular-nums; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin-bottom: 18px; }
.panel h3 { margin: 0 0 4px; font-size: 15px; }
.panel .hint { color: var(--fg-3); font-size: 12.5px; margin-bottom: 15px; }

/* ---- 提示词 / 联想词 ---- */
.prompt-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.prompt-card img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.prompt-card .p { padding: 10px 12px; font-size: 11.5px; color: var(--fg-2); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; max-height: 140px; overflow-y: auto; line-height: 1.5; }
.kw { background: var(--card); border: 1px solid var(--line); border-radius: 11px; padding: 12px 15px; margin-bottom: 10px; }
.kw .k { font-weight: 600; margin-bottom: 7px; }
.kw .s { display: flex; flex-wrap: wrap; gap: 5px; }

.loading, .empty { color: var(--fg-3); padding: 40px 0; text-align: center; }
.more { display: block; margin: 26px auto 0; padding: 10px 26px; background: var(--card);
        border: 1px solid var(--line); border-radius: 999px; color: var(--fg); cursor: pointer;
        font-family: inherit; font-size: 14px; }
.more:hover { background: var(--card-hi); }

@media (max-width: 820px) {
  .sidebar { display: none; }
  .content { padding: 16px 14px 50px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 11px; }
  .bar-row { grid-template-columns: 92px 1fr 66px; }
}

/* 无限滚动的哨兵/到底提示 */
.foot { padding: 8px 0 4px; }
.foot .loading, .foot .empty { padding: 26px 0; }