/* PHOTOPiC theme — light scientific.
   作用域 .pp-app，避免污染/被全站 base.css 污染（线上部署经验：base.css 有
   `*{font-family;font-size}` 与 `input{width:100%;height:38px}` 全局兜底）。 */

:root {
  --pp-bg: #eef2f7;
  --pp-panel: #ffffff;
  --pp-panel-2: #f8fafc;
  --pp-ink: #1e293b;
  --pp-ink-soft: #52607a;
  --pp-muted: #8a97ad;
  --pp-line: #e2e8f0;
  --pp-line-strong: #cbd5e1;
  --pp-accent: #1b6ec2;
  --pp-accent-d: #14538f;
  --pp-teal: #0e8a8a;
  --pp-red: #ff2d2d;
  --pp-blue-dot: #1aa3ff;
  --pp-ok: #12855a;
  --pp-warn: #b45309;
  --pp-font: -apple-system, "Segoe UI", "Microsoft YaHei", "微软雅黑", Roboto, Helvetica, Arial, sans-serif;
  --pp-mono: "SFMono-Regular", "Cascadia Code", Consolas, "Liberation Mono", monospace;
  --pp-shadow: 0 1px 2px rgba(15,23,42,.05), 0 4px 16px rgba(15,23,42,.06);
  --pp-radius: 12px;
}

/* 全站宽度兜底覆盖（线上 base.css 把 body 压成 1280px 定宽） */
html, body { width: 100% !important; max-width: 100% !important; margin: 0; }

.pp-app, .pp-app * { box-sizing: border-box; }
/* 抵消 base_photopic.css `*{font-family:"微软雅黑"}`（* 直接命中每个后代，非继承）：
   用同样命中后代但更高优先级的 `.pp-app *` 恢复主题字体；等宽元素随后再显式恢复（在其后，胜出）。 */
.pp-app * { font-family: var(--pp-font); }
.pp-app .pp-input--num, .pp-app .pp-ratio-sum, .pp-app .pp-partable th, .pp-app .pp-partable td,
.pp-app .pp-eq, .pp-app .pp-gof b, .pp-app .pp-sym, .pp-app .pp-textarea,
.pp-app .pp-matrix input, .pp-app code { font-family: var(--pp-mono); }
.pp-app {
  font-family: var(--pp-font);
  color: var(--pp-ink);
  background:
    radial-gradient(1200px 480px at 15% -10%, #e5edf8 0%, rgba(229,237,248,0) 60%),
    radial-gradient(1000px 420px at 100% 0%, #e7f6f6 0%, rgba(231,246,246,0) 55%),
    var(--pp-bg);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
}

/* ---------- Topbar ---------- */
.pp-topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 24px;
  background: rgba(255,255,255,.86); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--pp-line);
  position: sticky; top: 0; z-index: 30;
}
.pp-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.pp-logo { height: 40px; width: 40px; object-fit: contain; }
.pp-brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.pp-brand__name { font-weight: 800; font-size: 20px; letter-spacing: .3px; color: var(--pp-accent-d); }
.pp-brand__sub { font-size: 11.5px; color: var(--pp-muted); }
.pp-topbar__right { display: flex; align-items: center; gap: 18px; }
.pp-topbar__link { color: var(--pp-ink-soft); text-decoration: none; font-weight: 600; font-size: 13px; }
.pp-topbar__link:hover { color: var(--pp-accent); }

/* ---------- 3-column layout ---------- */
.pp-layout {
  display: grid;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr) minmax(260px, 340px);
  gap: 18px;
  padding: 18px 24px 40px;
  align-items: start;
  max-width: 1900px; margin: 0 auto;
}
@media (max-width: 1280px) {
  .pp-layout { grid-template-columns: minmax(0,1fr); }
  .pp-rail { position: static !important; max-height: none !important; }
}

.pp-rail {
  position: sticky; top: 74px;
  max-height: calc(100vh - 92px); overflow: auto;
  background: var(--pp-panel); border: 1px solid var(--pp-line);
  border-radius: var(--pp-radius); box-shadow: var(--pp-shadow);
  padding: 16px 16px 20px;
}
.pp-rail__title {
  font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--pp-accent); margin: 0 0 10px;
}

/* ---------- Cards ---------- */
.pp-card {
  background: var(--pp-panel); border: 1px solid var(--pp-line);
  border-radius: var(--pp-radius); box-shadow: var(--pp-shadow);
  padding: 16px 18px; margin-bottom: 18px;
}
.pp-card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.pp-card__title { font-size: 15px; font-weight: 700; margin: 0; }
.pp-card__hint { font-size: 12px; color: var(--pp-muted); }

/* ---------- Footer ---------- */
.pp-footer {
  display: flex; flex-direction: column; gap: 2px;
  padding: 18px 24px 28px; color: var(--pp-muted); font-size: 12px;
  text-align: center; align-items: center;
}