.analytics-filter {
  position: sticky; top: 0; z-index: 5;
  padding: 14px 18px;
  background: var(--c-card-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(200, 169, 119, 0.2);
  box-shadow: 0 2px 12px rgba(139, 115, 85, 0.08);
}
.analytics-filter .af-row {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap;
}
.analytics-filter .af-row + .af-row { margin-top: 8px; }
.analytics-filter .af-search {
  flex: 1; min-width: 240px;
  position: relative;
  display: flex; align-items: center;
}
.analytics-filter .af-search .icon {
  position: absolute; left: 10px;
  color: var(--c-text-3); font-size: 16px; pointer-events: none;
}
.analytics-filter .af-search input {
  width: 100%; padding: 9px 14px 9px 34px;
  border: 1px solid var(--c-border);
  border-radius: 10px; font-size: 13px;
  background: #fff; font-family: inherit;
}
.analytics-filter .af-search input:focus {
  border-color: var(--c-gold);
  box-shadow: 0 0 0 3px rgba(200, 169, 119, 0.12);
  outline: none;
}
.analytics-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  margin-top: 16px;
}
@media (max-width: 860px) {
  .analytics-layout { grid-template-columns: 1fr; }
}
.analytics-left {
  max-height: calc(100vh - 240px);
  overflow-y: auto;
  position: sticky; top: 80px;
  align-self: start;
}
@media (max-width: 860px) {
  .analytics-left { position: static; max-height: 50vh; }
}
.an-stu-list {
  display: flex; flex-direction: column; gap: 4px;
}
.an-stu-row {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .15s;
}
.an-stu-row:hover { background: var(--c-bg-soft); }
.an-stu-row.on {
  background: var(--c-gold-soft);
  border-color: var(--c-gold);
}
.an-stu-row .an-cmp-cb { flex-shrink: 0; }
.an-stu-row .asr-main { flex: 1; min-width: 0; }
.an-stu-row .asr-name {
  font-size: 14px; font-weight: 500; color: var(--c-text);
  font-family: var(--font-serif);
  letter-spacing: 0.3px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.an-stu-row .asr-meta {
  display: flex; align-items: center; gap: 6px;
  margin-top: 2px; font-size: 11px;
  color: var(--c-text-3);
}
.an-stu-row .asr-meta code {
  font-family: 'Consolas', monospace;
  font-size: 11px;
  background: #fff;
  padding: 1px 5px;
  border-radius: 3px;
  border: 1px solid var(--c-border);
}
.an-stu-row .asr-total {
  font-size: 13px; font-weight: 600; color: var(--c-text);
  font-family: var(--font-serif);
}
.an-stu-row .asr-trend {
  font-size: 14px; font-weight: 700;
  margin-left: auto;
}

.an-subjects-bar {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px;
  align-items: center;
}
.chip {
  display: inline-flex; align-items: center;
  padding: 5px 12px;
  border: 1px solid var(--c-border);
  background: #fff;
  color: var(--c-text-2);
  border-radius: 16px;
  font-size: 12px;
  cursor: pointer;
  transition: all .15s;
  font-family: inherit;
}
.chip:hover { border-color: var(--c-gold); color: var(--c-primary); }
.chip.on {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.an-view-toggle {
  display: flex; gap: 6px;
}
.chart-wrap {
  position: relative;
  height: 280px;
  width: 100%;
}

.an-overview-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
@media (max-width: 860px) {
  .an-overview-grid { grid-template-columns: repeat(2, 1fr); }
}
.ao-item {
  padding: 10px 12px;
  background: var(--c-bg-soft);
  border-radius: 10px;
  text-align: center;
}
.ao-l { font-size: 11px; color: var(--c-text-3); }
.ao-v { font-size: 20px; font-weight: 600; color: var(--c-text); font-family: var(--font-serif); margin-top: 2px; }

.an-strength-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 860px) { .an-strength-grid { grid-template-columns: 1fr; } }
.asg-title { font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.asg-row {
  font-size: 12px; padding: 4px 0;
  display: flex; justify-content: space-between; gap: 8px;
}
.asg-row b { color: var(--c-text); }
.tbl-scroll { overflow-x: auto; }

.sc-drop {
  border: 2px dashed var(--c-border);
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  cursor: pointer;
  background: var(--c-bg-soft);
  transition: all .2s;
}
.sc-drop:hover, .sc-drop.drag {
  border-color: var(--c-gold);
  background: rgba(200, 169, 119, 0.05);
}
.sc-preview {
  margin-top: 14px;
  padding: 12px;
  background: var(--c-bg-soft);
  border-radius: 8px;
}