:root{
  --bg:#eef4fb;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#d9e4f2;
  --brand:#0ea5e9;
  --brand-dark:#075985;
  --accent:#facc15;
  --toolbar:#0f172a;
  --label-width:190px;
  --axis-height:76px;
  --shadow:0 18px 45px rgba(15,23,42,.11);
  --radius:22px;
}

*{box-sizing:border-box}
html{color-scheme:light;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  overflow:hidden;
  color:var(--ink);
  background:
    radial-gradient(circle at 12% 0%,rgba(14,165,233,.12),transparent 26%),
    linear-gradient(180deg,#f8fbff 0,var(--bg) 100%);
  font-family:"Noto Sans TC","Microsoft JhengHei",system-ui,-apple-system,sans-serif;
}
button,input,select{font:inherit}
button{color:inherit}
a{color:inherit}

body.dark{
  color-scheme:dark;
  --bg:#07111f;
  --surface:#111c2e;
  --surface-2:#0c1728;
  --ink:#e5edf7;
  --muted:#9fb0c7;
  --line:#2a3a52;
  --toolbar:#020617;
  --shadow:0 18px 50px rgba(0,0,0,.35);
  background:radial-gradient(circle at 12% 0%,rgba(14,165,233,.13),transparent 27%),#07111f;
}

.app-shell{width:100%;min-width:0;height:100vh;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto minmax(0,1fr) auto;overflow:hidden}

.topbar{
  position:relative;
  z-index:40;
  width:100%;min-width:0;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:66px;
  padding:10px 18px;
  color:#e2e8f0;
  background:linear-gradient(135deg,#020617,#0f172a 62%,#082f49);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 12px 32px rgba(15,23,42,.18);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:max-content;
  text-decoration:none;
  font-weight:950;
  letter-spacing:.02em;
}
.brand-mark{
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border-radius:13px;
  color:#082f49;
  background:linear-gradient(135deg,#67e8f9,#38bdf8 60%,#facc15);
  box-shadow:0 0 28px rgba(56,189,248,.30);
  font-size:20px;
}
.page-title{min-width:0;flex:1}
.page-title h1{margin:0;font-size:clamp(1rem,2vw,1.35rem);line-height:1.2}
.page-title p{margin:3px 0 0;color:#a9bdd3;font-size:.78rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.toolbar-btn,.back-link{
  min-height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  padding:0 13px;
  border:1px solid rgba(255,255,255,.15);
  border-radius:999px;
  color:#e2e8f0;
  background:rgba(255,255,255,.06);
  text-decoration:none;
  cursor:pointer;
  font-weight:850;
  font-size:.84rem;
}
.toolbar-btn:hover,.back-link:hover{border-color:#67e8f9;background:rgba(56,189,248,.12)}

.controls{
  position:relative;
  z-index:35;
  width:100%;min-width:0;
  padding:10px 14px 11px;
  background:color-mix(in srgb,var(--surface) 94%,transparent);
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 24px rgba(15,23,42,.06);
}
.control-row{display:flex;align-items:center;gap:9px;min-width:0}
.control-row + .control-row{margin-top:9px}
.control-group{display:flex;align-items:center;gap:6px;min-width:0}
.control-group.grow{flex:1}
.control-label{color:var(--muted);font-size:.76rem;font-weight:900;white-space:nowrap}
.search-wrap{position:relative;flex:1;min-width:180px;max-width:430px}
.search-input{
  width:100%;height:38px;padding:0 37px 0 13px;
  color:var(--ink);background:var(--surface-2);
  border:1px solid var(--line);border-radius:12px;outline:none;
}
.search-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,165,233,.13)}
.clear-search{position:absolute;right:6px;top:5px;width:28px;height:28px;border:0;border-radius:9px;background:transparent;color:var(--muted);cursor:pointer}
.clear-search:hover{background:var(--line)}
.select{
  height:38px;padding:0 32px 0 11px;border:1px solid var(--line);border-radius:12px;
  color:var(--ink);background:var(--surface-2);font-weight:800;outline:none;
}
.select:focus{border-color:var(--brand)}
.select:disabled{opacity:.52;cursor:not-allowed}
.scope-select{max-width:220px}
.chip-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:thin;padding-bottom:2px}
.chip{
  --chip:#64748b;
  flex:0 0 auto;
  min-height:34px;
  display:inline-flex;align-items:center;gap:6px;
  padding:0 11px;
  border:1px solid var(--line);border-radius:999px;
  color:var(--muted);background:var(--surface-2);
  cursor:pointer;font-size:.78rem;font-weight:900;
}
.chip-dot{width:8px;height:8px;border-radius:50%;background:var(--chip);box-shadow:0 0 0 3px color-mix(in srgb,var(--chip) 18%,transparent)}
.chip.active{color:var(--ink);border-color:color-mix(in srgb,var(--chip) 62%,var(--line));background:color-mix(in srgb,var(--chip) 12%,var(--surface))}
.chip:not(.active){opacity:.62}
.icon-btn{
  width:38px;height:38px;flex:0 0 38px;border:1px solid var(--line);border-radius:12px;
  color:var(--ink);background:var(--surface-2);cursor:pointer;font-weight:950;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-dark)}
.zoom-value{min-width:52px;text-align:center;color:var(--muted);font-size:.76rem;font-weight:900}
.zoom-range{width:120px;accent-color:var(--brand)}
.zoom-presets{display:flex;align-items:center;gap:4px;min-width:0}
.zoom-preset{
  flex:0 0 auto;min-height:30px;padding:0 8px;border:1px solid var(--line);border-radius:9px;
  color:var(--muted);background:var(--surface-2);cursor:pointer;font-size:.7rem;font-weight:900;
}
.zoom-preset:hover{border-color:var(--brand);color:var(--brand-dark)}
.zoom-preset.active{border-color:var(--brand);color:#fff;background:var(--brand);box-shadow:0 4px 12px color-mix(in srgb,var(--brand) 24%,transparent)}
.jump-list{display:flex;gap:5px;overflow-x:auto;scrollbar-width:thin}
.jump-btn{
  flex:0 0 auto;min-height:32px;padding:0 10px;border:1px solid var(--line);border-radius:10px;
  color:var(--muted);background:var(--surface-2);cursor:pointer;font-size:.76rem;font-weight:850;
}
.jump-btn:hover{color:var(--brand-dark);border-color:var(--brand)}
.toggle-btn.active{color:#082f49;background:#fde68a;border-color:#facc15}

.timeline-area{min-height:0;padding:12px 14px 14px}
.timeline-card{height:100%;min-height:0;display:grid;grid-template-rows:auto minmax(0,1fr);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}

.history-affiliate{position:relative;z-index:30;padding:0 14px 12px;background:color-mix(in srgb,var(--bg) 94%,transparent)}
.history-affiliate-details{max-height:44vh;overflow:auto;border:1px solid var(--line);border-radius:17px;background:var(--surface);box-shadow:0 12px 30px rgba(15,23,42,.10)}
.history-affiliate-details>summary{min-height:43px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 14px;color:var(--ink);background:linear-gradient(90deg,color-mix(in srgb,#f59e0b 11%,var(--surface)),var(--surface));cursor:pointer;list-style:none;font-size:.82rem}
.history-affiliate-details>summary::-webkit-details-marker{display:none}
.history-affiliate-details>summary::after{content:"＋";width:27px;height:27px;flex:0 0 27px;display:grid;place-items:center;border:1px solid color-mix(in srgb,#f59e0b 45%,var(--line));border-radius:9px;color:#b45309;background:color-mix(in srgb,#f59e0b 9%,var(--surface));font-weight:950}
.history-affiliate-details[open]>summary::after{content:"−"}
.history-affiliate-summary-title{font-weight:950}.history-affiliate-summary-hint{margin-left:auto;color:var(--muted);font-size:.72rem;font-weight:800}
.history-affiliate-body{padding:14px;border-top:1px solid var(--line)}
.history-affiliate-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:12px}
.history-affiliate-head h2{margin:0;font-size:1.05rem}.history-affiliate-head p{margin:4px 0 0;color:var(--muted);font-size:.75rem;line-height:1.55}
.history-affiliate-disclosure{max-width:390px;text-align:right}
.history-affiliate-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}
.history-affiliate-card{min-width:0;display:flex;flex-direction:column;gap:8px;padding:14px;border:1px solid var(--line);border-radius:15px;color:var(--ink);background:var(--surface-2);text-decoration:none;transition:border-color .18s,transform .18s,box-shadow .18s}
.history-affiliate-card:hover{border-color:#f59e0b;transform:translateY(-2px);box-shadow:0 10px 24px rgba(180,83,9,.12)}
.history-affiliate-card-title{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;font-size:.91rem;font-weight:950;line-height:1.45}
.history-affiliate-tag{flex:0 0 auto;display:inline-flex;align-items:center;min-height:24px;padding:0 8px;border:1px solid #fbbf24;border-radius:999px;color:#92400e;background:#fef3c7;font-size:.65rem;font-weight:900;white-space:nowrap}
.history-affiliate-card>p{margin:0;color:var(--ink);font-size:.78rem;line-height:1.65}
.history-affiliate-fit,.history-affiliate-remind{color:var(--muted);font-size:.72rem;line-height:1.58}.history-affiliate-fit strong,.history-affiliate-remind strong{color:var(--ink)}
.history-affiliate-remind{padding-top:8px;border-top:1px dashed var(--line)}
.history-affiliate-cta{margin-top:auto;color:#b45309;font-size:.74rem;font-weight:950}
.history-affiliate-teacher-note{margin:12px 0 0;padding:11px 13px;border-left:4px solid #f59e0b;border-radius:0 12px 12px 0;color:var(--muted);background:color-mix(in srgb,#f59e0b 8%,var(--surface-2));font-size:.76rem;line-height:1.65}
body.dark .history-affiliate-tag{color:#fde68a;background:#78350f;border-color:#b45309}body.dark .history-affiliate-cta,body.dark .history-affiliate-details>summary::after{color:#fbbf24}
.timeline-status{
  min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:7px 13px;border-bottom:1px solid var(--line);background:var(--surface-2);
  color:var(--muted);font-size:.76rem;font-weight:800;
}
.status-main{display:flex;align-items:center;gap:8px;min-width:0}
.status-badge{display:inline-flex;align-items:center;min-height:24px;padding:0 9px;border-radius:999px;background:#e0f2fe;color:#075985;white-space:nowrap}
body.dark .status-badge{background:#0c4a6e;color:#bae6fd}
.status-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.timeline-viewport{
  position:relative;min-height:0;overflow:auto;overscroll-behavior:contain;
  scrollbar-color:#94a3b8 var(--surface-2);scrollbar-width:auto;
  cursor:grab;
}
.timeline-viewport.dragging{cursor:grabbing;user-select:none}
.timeline-canvas{position:relative;min-height:100%;background:var(--surface)}
.timeline-axis{
  position:sticky;top:0;z-index:25;height:var(--axis-height);
  background:color-mix(in srgb,var(--surface) 96%,transparent);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);
}
.axis-corner{
  position:sticky;left:0;z-index:28;width:var(--label-width);height:100%;display:flex;align-items:center;padding:0 14px;
  color:var(--ink);background:var(--surface);border-right:1px solid var(--line);font-weight:950;
}
.axis-corner span{display:block;color:var(--muted);font-size:.72rem;font-weight:800;margin-top:3px}
.axis-baseline{position:absolute;left:var(--label-width);right:0;bottom:20px;height:2px;background:var(--ink);opacity:.5}
.axis-tick{position:absolute;bottom:19px;width:1px;height:14px;background:var(--ink);opacity:.52;transform:translateX(-.5px)}
.axis-tick.major{height:22px;opacity:.74}
.axis-tick-label{position:absolute;bottom:43px;transform:translateX(-50%);white-space:nowrap;color:var(--muted);font-size:.71rem;font-weight:900}
.axis-tick-label.edge-start{transform:none}
.axis-tick-label.edge-end{transform:translateX(-100%)}
.axis-break{position:absolute;bottom:13px;width:22px;height:18px;transform:translateX(-50%);background:var(--surface)}
.axis-break::before,.axis-break::after{content:"";position:absolute;top:7px;width:13px;height:2px;background:var(--ink);transform:rotate(-58deg)}
.axis-break::before{left:0}.axis-break::after{left:8px}

.global-band-layer,.grid-layer,.connection-layer,.connection-endpoint-layer,.cursor-layer{position:absolute;inset:0;pointer-events:none}
.global-band-layer{top:var(--axis-height);z-index:0}
.global-band{position:absolute;top:0;bottom:0;border-left:1px solid rgba(100,116,139,.13);border-right:1px solid rgba(100,116,139,.13)}
.global-band-label{position:sticky;top:82px;display:block;width:max-content;max-width:150px;margin:6px auto 0;padding:2px 6px;border-radius:7px;color:var(--muted);background:color-mix(in srgb,var(--surface) 78%,transparent);font-size:.63rem;font-weight:900;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.grid-layer{top:var(--axis-height);z-index:1}
.grid-line{position:absolute;top:0;bottom:0;width:1px;background:color-mix(in srgb,var(--line) 74%,transparent)}
.grid-line.major{background:color-mix(in srgb,var(--muted) 30%,transparent)}
.grid-year{position:absolute;top:6px;transform:translateX(4px);color:color-mix(in srgb,var(--muted) 72%,transparent);font-size:.62rem;font-weight:800;writing-mode:vertical-rl}
.connection-layer{z-index:4;overflow:visible}
.connection-halo{fill:none;stroke:color-mix(in srgb,var(--surface) 86%,transparent);stroke-width:7;stroke-linecap:round;opacity:.94}
.connection-path{fill:none;stroke:#f59e0b;stroke-width:2.8;stroke-dasharray:8 5;stroke-linecap:round;opacity:.94;filter:drop-shadow(0 2px 3px rgba(120,53,15,.35))}
.connection-layer.hidden,.connection-endpoint-layer.hidden{display:none}
.connection-endpoint-layer{z-index:11}
.connection-pin{position:absolute;display:block;filter:drop-shadow(0 2px 3px rgba(120,53,15,.42))}
.connection-pin-source{
  width:14px;height:14px;transform:translate(-50%,-50%);border:3px solid #f59e0b;border-radius:50%;
  background:var(--surface);box-shadow:0 0 0 2px rgba(255,255,255,.82);
}
.connection-pin-target{width:16px;height:16px;background:#f59e0b;filter:drop-shadow(0 0 1px #fff) drop-shadow(0 2px 3px rgba(120,53,15,.42))}
.connection-pin-target.direction-right{transform:translate(-100%,-50%);clip-path:polygon(0 0,100% 50%,0 100%)}
.connection-pin-target.direction-left{transform:translate(0,-50%);clip-path:polygon(100% 0,0 50%,100% 100%)}
.connection-pin-target.direction-down{transform:translate(-50%,-100%);clip-path:polygon(0 0,100% 0,50% 100%)}
.connection-pin-target.direction-up{transform:translate(-50%,0);clip-path:polygon(50% 0,100% 100%,0 100%)}
.cursor-layer{z-index:12}
.year-cursor{position:absolute;top:var(--axis-height);bottom:0;width:2px;background:#f43f5e;box-shadow:0 0 0 1px rgba(255,255,255,.7),0 0 18px rgba(244,63,94,.42)}
.year-cursor-label{position:sticky;top:82px;display:block;transform:translateX(-50%);width:max-content;margin-top:4px;padding:3px 7px;border-radius:999px;color:white;background:#e11d48;font-size:.68rem;font-weight:950}

.lanes{position:relative;z-index:3}
.lane{position:relative;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 96%,var(--lane-color) 4%)}
.lane:last-child{border-bottom:0}
.lane-label{
  position:sticky;left:0;z-index:18;width:var(--label-width);height:100%;display:block;padding:17px 13px;
  color:var(--ink);background:color-mix(in srgb,var(--surface) 92%,var(--lane-color) 8%);border-right:1px solid var(--line);
  box-shadow:8px 0 16px rgba(15,23,42,.04);
}
.lane-header{display:flex;align-items:flex-start;gap:10px;min-width:0}.lane-heading{min-width:0;padding-right:66px}
.lane-stripe{width:7px;height:48px;flex:0 0 7px;border-radius:999px;background:var(--lane-color)}
.lane-name{font-size:.92rem;font-weight:950;line-height:1.2}
.lane-description{margin-top:5px;color:var(--muted);font-size:.67rem;line-height:1.45;font-weight:700}
.region-detail-btn{
  position:absolute;top:9px;right:8px;min-height:28px;padding:0 7px;border:1px solid color-mix(in srgb,var(--lane-color) 48%,var(--line));border-radius:9px;
  color:color-mix(in srgb,var(--lane-color) 78%,var(--ink));background:color-mix(in srgb,var(--surface) 90%,var(--lane-color) 10%);cursor:pointer;font-size:.62rem;font-weight:900
}
.region-detail-btn:hover,.region-detail-btn.active{color:#fff;background:var(--lane-color);border-color:var(--lane-color)}
.lane.medium-detail .lane-description{display:none}.lane.medium-detail .lane-stripe{height:34px}
.medium-track-row{
  position:absolute;left:var(--label-width);right:0;z-index:1;height:40px;pointer-events:none;
  border-top:1px solid color-mix(in srgb,var(--lane-color) 18%,var(--line));background:color-mix(in srgb,var(--surface) 97%,var(--lane-color) 3%)
}
.medium-track-row:nth-of-type(even){background:color-mix(in srgb,var(--surface) 94%,var(--lane-color) 6%)}
.medium-track-label{
  position:absolute;left:10px;right:7px;height:40px;display:flex;flex-direction:column;justify-content:center;min-width:0;padding-right:3px;
  border-top:1px solid color-mix(in srgb,var(--lane-color) 22%,var(--line));overflow:hidden
}
.medium-track-label.multi-row{justify-content:flex-start;padding-top:8px}
.medium-track-label strong{display:flex;align-items:center;gap:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.66rem;line-height:1.2}
.medium-track-label small{margin-top:2px;overflow:hidden;color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:.56rem;line-height:1.2;font-weight:700}
.medium-track-count{margin-top:5px;color:color-mix(in srgb,var(--lane-color) 72%,var(--muted));font-size:.5rem;font-weight:850;letter-spacing:.03em}
.medium-subrow-line{position:absolute;left:0;right:0;border-top:1px dashed color-mix(in srgb,var(--lane-color) 16%,var(--line));pointer-events:none}
.medium-track-group{flex:0 0 auto;padding:2px 4px;border-radius:5px;color:#fff;background:var(--lane-color);font-size:.48rem;letter-spacing:.03em}.medium-track-group.peripheral{color:#9a3412;background:#ffedd5}
body.dark .medium-track-group.peripheral{color:#fed7aa;background:#7c2d12}
.medium-event-label{position:absolute;left:10px;right:7px;color:var(--muted);font-size:.61rem;font-weight:900;letter-spacing:.06em}
.medium-event-separator{position:absolute;left:var(--label-width);right:0;z-index:2;border-top:1px dashed color-mix(in srgb,var(--lane-color) 44%,var(--line));pointer-events:none}
.period-bar{
  position:absolute;z-index:3;height:28px;display:flex;align-items:center;justify-content:center;min-width:5px;padding:0 8px;
  color:white;background:var(--lane-color);border:1px solid color-mix(in srgb,var(--lane-color) 72%,#000);border-radius:8px;
  box-shadow:0 5px 14px color-mix(in srgb,var(--lane-color) 22%,transparent);overflow:hidden;cursor:pointer;
  font-size:.72rem;font-weight:950;white-space:nowrap;text-overflow:ellipsis;
}
.period-bar.medium-period{box-shadow:0 3px 10px color-mix(in srgb,var(--lane-color) 18%,transparent)}
.period-bar.supplemental-period{border-style:dashed;background:color-mix(in srgb,var(--lane-color) 88%,#334155 12%)}
.period-bar:hover{z-index:9;filter:saturate(1.12) brightness(1.04);box-shadow:0 8px 20px color-mix(in srgb,var(--lane-color) 32%,transparent)}
.period-bar.tiny{padding:0 2px;color:transparent}
.period-bar.tiny:hover{min-width:max-content;color:white;padding:0 8px;overflow:visible}
.period-bar.open-start{border-left-style:dashed;border-top-left-radius:2px;border-bottom-left-radius:2px}
.event-card{
  --event-color:#64748b;
  position:absolute;z-index:7;min-height:28px;display:flex;align-items:center;gap:6px;padding:4px 9px 4px 7px;
  color:var(--ink);background:color-mix(in srgb,var(--surface) 90%,var(--event-color) 10%);
  border:1px solid color-mix(in srgb,var(--event-color) 55%,var(--line));border-left:5px solid var(--event-color);border-radius:9px;
  box-shadow:0 4px 11px rgba(15,23,42,.08);cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  font-size:.70rem;font-weight:900;text-align:left;
}
.event-card:hover,.event-card:focus-visible{z-index:16;transform:translateY(-2px);outline:none;box-shadow:0 9px 22px rgba(15,23,42,.16);overflow:visible;max-width:none!important}
.event-year{color:var(--event-color);font-size:.64rem;font-weight:950}
.event-title{overflow:hidden;text-overflow:ellipsis}
.curriculum-badge{
  width:20px;height:20px;flex:0 0 20px;display:grid;place-items:center;border-radius:6px;
  color:#fff;background:#64748b;font-size:.61rem;font-weight:950;line-height:1;
}
.curriculum-badge.curriculum-junior,.level-pill.curriculum-junior{background:#0f766e}
.curriculum-badge.curriculum-senior,.level-pill.curriculum-senior{background:#7c3aed}
.curriculum-badge.curriculum-advanced,.level-pill.curriculum-advanced{background:#c2410c}
.curriculum-badge.curriculum-shared,.level-pill.curriculum-shared{color:#422006;background:#facc15}
.event-card:hover .event-title{overflow:visible}
.event-card.is-match{box-shadow:0 0 0 3px #facc15,0 9px 22px rgba(15,23,42,.16)}
.event-card.dot-mode{width:14px!important;min-width:14px;max-width:14px;height:14px;min-height:14px;padding:0;border:2px solid white;border-radius:50%;background:var(--event-color);box-shadow:0 0 0 1px var(--event-color),0 3px 7px rgba(15,23,42,.2)}
.event-card.dot-mode .curriculum-badge,.event-card.dot-mode .event-year,.event-card.dot-mode .event-title{display:none}
.event-card.dot-mode:hover,.event-card.dot-mode:focus-visible{transform:scale(1.4);overflow:visible}
.event-span{position:absolute;z-index:5;height:4px;border-radius:999px;background:var(--event-color);opacity:.48;pointer-events:none}
.empty-lane{position:absolute;left:calc(var(--label-width) + 22px);top:52%;transform:translateY(-50%);color:var(--muted);font-size:.8rem;font-weight:800}

.legend{display:flex;gap:9px;align-items:center;overflow-x:auto;scrollbar-width:thin}
.legend-item{display:flex;align-items:center;gap:5px;flex:0 0 auto;white-space:nowrap}
.legend-mark{width:11px;height:11px;border-radius:3px;background:var(--legend-color)}

.modal-backdrop{
  position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:20px;background:rgba(2,6,23,.70);backdrop-filter:blur(7px);
}
.modal-backdrop[hidden]{display:none}
.modal{
  width:min(650px,100%);max-height:min(760px,calc(100vh - 34px));overflow:auto;
  color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:26px;box-shadow:0 30px 90px rgba(0,0,0,.38);
}
.modal-head{position:sticky;top:0;z-index:2;display:flex;align-items:flex-start;gap:12px;padding:20px 20px 16px;background:color-mix(in srgb,var(--surface) 96%,transparent);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.modal-accent{width:9px;align-self:stretch;min-height:48px;border-radius:999px;background:var(--modal-color,#0ea5e9)}
.modal-title-wrap{min-width:0;flex:1}
.modal-kicker{color:var(--modal-color,#0ea5e9);font-size:.76rem;font-weight:950}
.modal h2{margin:4px 0 0;font-size:clamp(1.35rem,3vw,1.85rem);line-height:1.25}
.modal-close{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--line);border-radius:12px;color:var(--muted);background:var(--surface-2);cursor:pointer;font-size:1.15rem}
.modal-close:hover{color:#dc2626;border-color:#fca5a5}
.modal-body{padding:19px 21px 23px}
.modal-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.modal-date{display:inline-flex;align-items:center;min-height:30px;padding:0 11px;border-radius:999px;color:#082f49;background:#fde68a;font-weight:950;font-size:.82rem}
.level-pill{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:999px;color:#fff;font-size:.73rem;font-weight:950}
.modal-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.modal-section{padding:14px;border:1px solid var(--line);border-radius:16px;background:var(--surface-2)}
.modal-section.full{grid-column:1/-1}
.modal-section h3{margin:0 0 7px;color:var(--muted);font-size:.75rem;letter-spacing:.08em}
.modal-section p{margin:0;line-height:1.75;font-size:.94rem}
.modal-section.curriculum-section.junior{border-top:4px solid #0f766e}
.modal-section.curriculum-section.senior{border-top:4px solid #7c3aed;background:color-mix(in srgb,var(--surface-2) 91%,#7c3aed 9%)}
.modal-section.curriculum-section.advanced{border-top:4px solid #ea580c;background:color-mix(in srgb,var(--surface-2) 91%,#ea580c 9%)}
.modal-section .section-impact{margin-top:9px;padding-top:9px;border-top:1px dashed var(--line);color:var(--muted);font-size:.84rem}
.source-tags{display:flex;gap:6px;flex-wrap:wrap}
.source-tag{display:inline-flex;align-items:center;min-height:27px;padding:0 9px;border-radius:999px;color:var(--brand-dark);background:#e0f2fe;border:1px solid #bae6fd;font-size:.75rem;font-weight:900}
.source-tag.senior{color:#5b21b6;background:#ede9fe;border-color:#c4b5fd}
.source-tag.advanced{color:#9a3412;background:#ffedd5;border-color:#fdba74}
body.dark .source-tag{color:#bae6fd;background:#0c4a6e;border-color:#075985}
body.dark .source-tag.senior{color:#ddd6fe;background:#4c1d95;border-color:#6d28d9}
body.dark .source-tag.advanced{color:#fed7aa;background:#7c2d12;border-color:#c2410c}
.external-reading{background:color-mix(in srgb,var(--surface-2) 92%,#f8fafc 8%)}
.wiki-link{
  display:flex;align-items:center;gap:11px;min-height:52px;padding:9px 12px;border:1px solid var(--line);border-radius:13px;
  color:var(--ink);background:var(--surface);text-decoration:none;transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease;
}
.wiki-link:hover{border-color:var(--brand);transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,23,42,.08)}
.wiki-link:focus-visible{outline:3px solid color-mix(in srgb,var(--brand) 35%,transparent);outline-offset:2px}
.wiki-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px;border-radius:9px;color:#fff;background:#202122;font-family:Georgia,"Times New Roman",serif;font-size:1.08rem;font-weight:900}
.wiki-copy{display:grid;gap:2px;min-width:0}.wiki-copy strong{font-size:.86rem}.wiki-copy small{overflow:hidden;color:var(--muted);font-size:.75rem;text-overflow:ellipsis;white-space:nowrap}
.wiki-arrow{margin-left:auto;color:var(--brand-dark);font-size:1.05rem;font-weight:950}
body.dark .wiki-mark{color:#202122;background:#f8fafc}
.related-list{display:grid;gap:7px}
.related-btn{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 11px;border:1px solid var(--line);border-radius:11px;color:var(--ink);background:var(--surface);cursor:pointer;text-align:left;font-weight:850}
.related-btn:hover{border-color:var(--brand)}
.event-exams{border-top:4px solid #0f766e;background:color-mix(in srgb,var(--surface-2) 91%,#0f766e 9%)}
.event-exams h3{display:flex;align-items:center;justify-content:space-between;gap:10px}.event-exams h3 span{display:inline-flex;align-items:center;min-height:23px;padding:0 8px;border-radius:999px;color:#115e59;background:#ccfbf1;font-size:.68rem;letter-spacing:0}
body.dark .event-exams h3 span{color:#99f6e4;background:#134e4a}
.event-exam-list{display:grid;gap:7px}.event-exam-list button{width:100%;display:grid;grid-template-columns:max-content minmax(0,1fr);align-items:center;gap:9px;padding:9px 10px;border:1px solid var(--line);border-radius:11px;color:var(--ink);background:var(--surface);cursor:pointer;text-align:left}
.event-exam-list button:hover{border-color:#14b8a6}.event-exam-list strong{color:#0f766e;font-size:.72rem}.event-exam-list span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.8rem;font-weight:400}
.event-exam-all{width:100%;min-height:34px;margin-top:8px;border:1px dashed #14b8a6;border-radius:10px;color:#0f766e;background:transparent;cursor:pointer;font-size:.76rem;font-weight:950}
body.dark .event-exam-list strong,body.dark .event-exam-all{color:#5eead4}

.exam-backdrop{position:fixed;inset:0;z-index:110;display:grid;place-items:center;padding:18px;background:rgba(2,6,23,.76);backdrop-filter:blur(8px)}
.exam-backdrop[hidden]{display:none}
.exam-dialog{width:min(1020px,100%);max-height:calc(100vh - 36px);display:flex;flex-direction:column;overflow:hidden;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:0 30px 95px rgba(0,0,0,.46)}
.exam-head{display:flex;align-items:flex-start;gap:18px;padding:18px 21px 14px;border-bottom:1px solid var(--line);background:var(--surface)}
.exam-head>div{min-width:0;flex:1}.exam-kicker{color:#0f766e;font-size:.73rem;font-weight:950;letter-spacing:.1em}.exam-head h2{margin:3px 0 0;font-size:clamp(1.25rem,3vw,1.7rem)}.exam-head p{margin:5px 0 0;color:var(--muted);font-size:.8rem;line-height:1.55}
.exam-tools{display:grid;grid-template-columns:minmax(240px,1fr) repeat(3,auto);gap:9px;padding:10px 21px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.exam-tools[hidden]{display:none}.exam-search-wrap{min-width:0}.exam-search{width:100%;height:38px;padding:0 12px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:11px;outline:none}.exam-search:focus{border-color:#14b8a6;box-shadow:0 0 0 3px rgba(20,184,166,.14)}
.exam-summary{padding:9px 21px;color:var(--muted);background:var(--surface);border-bottom:1px solid var(--line);font-size:.75rem;font-weight:850}
.exam-content{min-height:0;overflow:auto;padding:15px 21px 21px}
.exam-clear-context{min-height:34px;margin-bottom:10px;padding:0 11px;border:1px dashed #14b8a6;border-radius:10px;color:#0f766e;background:transparent;cursor:pointer;font-size:.75rem;font-weight:900}
.exam-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.exam-list-card{min-width:0;display:flex;flex-direction:column;gap:7px;padding:12px;border:1px solid var(--line);border-radius:14px;color:var(--ink);background:var(--surface-2);cursor:pointer;text-align:left}.exam-list-card:hover{border-color:#14b8a6;box-shadow:0 8px 20px rgba(15,118,110,.10);transform:translateY(-1px)}
.exam-list-meta{display:flex;align-items:center;justify-content:space-between;gap:8px}.exam-list-meta strong{color:#0f766e;font-size:.74rem}.exam-list-meta span{color:var(--muted);font-size:.67rem;font-weight:850}.exam-list-prompt{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2;min-height:2.7em;font-size:.82rem;font-weight:400;line-height:1.58}
.exam-list-flags{display:flex;gap:5px;flex-wrap:wrap}.exam-list-flags em{padding:2px 6px;border-radius:999px;color:#475569;background:color-mix(in srgb,var(--line) 58%,transparent);font-size:.62rem;font-style:normal;font-weight:900}
.exam-pagination{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:15px}.exam-pagination button{min-height:34px;padding:0 12px;border:1px solid var(--line);border-radius:10px;color:var(--ink);background:var(--surface-2);cursor:pointer;font-weight:900}.exam-pagination button:disabled{opacity:.4;cursor:not-allowed}.exam-pagination span{color:var(--muted);font-size:.75rem;font-weight:850}
.exam-question-detail{width:min(790px,100%);margin:0 auto}.exam-back-btn{min-height:34px;margin-bottom:11px;padding:0 11px;border:1px solid var(--line);border-radius:10px;color:var(--muted);background:var(--surface-2);cursor:pointer;font-weight:900}.exam-back-btn:hover{border-color:#14b8a6;color:#0f766e}
.exam-question-meta{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:11px}.exam-question-meta span{display:inline-flex;align-items:center;min-height:26px;padding:0 8px;border-radius:999px;color:#115e59;background:#ccfbf1;font-size:.7rem;font-weight:900}
body.dark .exam-question-meta span{color:#99f6e4;background:#134e4a}
.exam-stimulus,.exam-question-main,.exam-answer-panel,.exam-linked-events{padding:15px;border:1px solid var(--line);border-radius:16px;background:var(--surface-2)}.exam-stimulus{margin-bottom:11px;border-left:5px solid #d97706}.exam-question-main{border-left:5px solid #0f766e}.exam-stimulus h3,.exam-question-main h3,.exam-answer-panel h3,.exam-linked-events h3{margin:0 0 8px;color:var(--muted);font-size:.74rem;letter-spacing:.07em}.exam-stimulus p,.exam-prompt,.exam-answer-panel p{margin:0;font-size:.92rem;font-weight:400;line-height:1.78}.exam-prompt{font-weight:400}.exam-complex-prompt{white-space:normal}
.exam-media-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:11px}.exam-figure{min-width:0;margin:0;padding:8px;border:1px solid var(--line);border-radius:12px;background:#fff}.exam-figure img{display:block;width:100%;max-height:430px;object-fit:contain}.exam-figure figcaption{margin-top:5px;color:#64748b;text-align:center;font-size:.65rem;font-weight:800}
.exam-table-wrap{max-width:100%;overflow:auto;margin-top:11px}.exam-table{width:100%;border-collapse:collapse;background:var(--surface);font-size:.78rem}.exam-table td{padding:7px 8px;border:1px solid var(--line);line-height:1.5;vertical-align:top}
.exam-options{display:grid;gap:7px;margin:13px 0 0;padding:0;list-style:none}.exam-options li{display:flex;align-items:flex-start;gap:9px;padding:9px 10px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}.exam-options li>span{width:27px;height:27px;flex:0 0 27px;display:grid;place-items:center;border-radius:8px;color:#0f766e;background:#ccfbf1;font-size:.75rem;font-weight:950}.exam-options li p{margin:2px 0 0;font-size:.84rem;font-weight:400;line-height:1.68}.exam-options li.correct{border-color:#22c55e;background:color-mix(in srgb,var(--surface) 88%,#dcfce7 12%)}.exam-options li.correct>span{color:#fff;background:#16a34a}
.exam-answer-toggle{width:100%;min-height:42px;margin:12px 0;border:0;border-radius:12px;color:#fff;background:linear-gradient(135deg,#0f766e,#0d9488);cursor:pointer;font-weight:950;box-shadow:0 8px 18px rgba(15,118,110,.18)}.exam-answer-panel{display:grid;grid-template-columns:auto 1fr;gap:13px;margin-bottom:12px;border-color:#86efac;background:color-mix(in srgb,var(--surface-2) 88%,#dcfce7 12%)}.exam-answer-key{display:grid;place-items:center;min-width:84px;max-width:280px;min-height:64px;padding:8px;border-radius:12px;color:#14532d;background:#bbf7d0;font-weight:900;line-height:1.55;text-align:center;white-space:normal}.exam-linked-events{margin-top:12px}.exam-linked-events>div{display:flex;gap:6px;flex-wrap:wrap}.exam-linked-events button{min-height:32px;padding:0 9px;border:1px solid #67e8f9;border-radius:999px;color:#075985;background:#ecfeff;cursor:pointer;font-size:.72rem;font-weight:900}.exam-linked-events span{color:var(--muted);font-size:.78rem;line-height:1.55}
body.dark .exam-list-meta strong,body.dark .exam-clear-context,body.dark .exam-back-btn:hover{color:#5eead4}body.dark .exam-figure{background:#f8fafc}body.dark .exam-figure figcaption{color:#475569}

.relation-backdrop{
  position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:18px;background:rgba(2,6,23,.72);backdrop-filter:blur(7px)
}
.relation-backdrop[hidden]{display:none}
.relation-dialog{
  width:min(1120px,100%);max-height:calc(100vh - 36px);display:flex;flex-direction:column;overflow:hidden;
  color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:0 30px 90px rgba(0,0,0,.42)
}
.relation-head{display:flex;align-items:flex-start;gap:18px;padding:19px 21px 15px;border-bottom:1px solid var(--line);background:var(--surface)}
.relation-head>div{min-width:0;flex:1}.relation-kicker{color:#d97706;font-size:.74rem;font-weight:950;letter-spacing:.1em}
.relation-head h2{margin:3px 0 0;font-size:clamp(1.25rem,3vw,1.7rem)}
.relation-head p{margin:5px 0 0;color:var(--muted);font-size:.82rem;line-height:1.55}
.relation-tools{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 21px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.relation-tabs{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.relation-tab{min-height:36px;padding:0 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--surface);cursor:pointer;font-size:.8rem;font-weight:900}
.relation-tab.active{color:#78350f;background:#fef3c7;border-color:#f59e0b}
.relation-search-wrap{width:min(390px,45%)}
.relation-search{width:100%;height:38px;padding:0 12px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:11px;outline:none}
.relation-search:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(14,165,233,.13)}
.relation-summary{padding:9px 21px;color:var(--muted);background:var(--surface);border-bottom:1px solid var(--line);font-size:.76rem;font-weight:800}
.relation-content{min-height:0;overflow:auto;padding:0 21px 20px}
.relation-table-wrap{min-width:780px}
.relation-table{width:100%;border-collapse:separate;border-spacing:0;font-size:.8rem}
.relation-table th{position:sticky;top:0;z-index:1;padding:10px 9px;color:var(--muted);background:var(--surface-2);border-bottom:2px solid var(--line);text-align:left;font-size:.73rem;letter-spacing:.04em}
.relation-table td{padding:10px 9px;border-bottom:1px solid var(--line);vertical-align:middle;line-height:1.55}
.relation-table tbody tr:hover{background:color-mix(in srgb,var(--surface-2) 72%,#f59e0b 7%)}
.relation-type{display:inline-flex;align-items:center;min-height:25px;padding:0 8px;border-radius:999px;white-space:nowrap;font-size:.68rem;font-weight:950}
.relation-type.cause{color:#991b1b;background:#fee2e2}.relation-type.development{color:#075985;background:#e0f2fe}.relation-type.comparison{color:#5b21b6;background:#ede9fe}
body.dark .relation-type.cause{color:#fecaca;background:#7f1d1d}body.dark .relation-type.development{color:#bae6fd;background:#0c4a6e}body.dark .relation-type.comparison{color:#ddd6fe;background:#4c1d95}
.relation-event-btn{width:100%;display:flex;align-items:flex-start;gap:8px;padding:7px 8px;border:1px solid var(--line);border-radius:10px;color:var(--ink);background:var(--surface);cursor:pointer;text-align:left}
.relation-event-btn:hover{border-color:var(--brand)}
.relation-event-date{flex:0 0 auto;color:#0369a1;font-size:.69rem;font-weight:950}.relation-event-name{font-weight:900}.relation-event-region{display:block;color:var(--muted);font-size:.67rem;font-weight:800}
.relation-arrow{color:#d97706;font-size:1.05rem;font-weight:950;text-align:center}.relation-note{font-weight:800}
.comparison-items{display:grid;gap:5px}.comparison-focus{min-width:220px}.comparison-exam{min-width:250px;color:var(--muted)}
.relation-empty{margin:20px 0;padding:22px;border:1px dashed var(--line);border-radius:16px;color:var(--muted);background:var(--surface-2);text-align:center;line-height:1.7}
.textbook-table-list{display:grid;gap:15px;padding-top:15px}
.textbook-table-card{overflow:hidden;border:1px solid var(--line);border-radius:17px;background:var(--surface);box-shadow:0 8px 22px rgba(15,23,42,.06)}
.textbook-table-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:14px 15px 11px;background:linear-gradient(135deg,color-mix(in srgb,var(--surface-2) 88%,#f59e0b 12%),var(--surface))}
.textbook-table-head h3{margin:3px 0 0;font-size:1rem}.textbook-table-kicker{color:#b45309;font-size:.68rem;font-weight:950;letter-spacing:.04em}
.textbook-table-count{flex:0 0 auto;padding:4px 8px;border:1px solid #fcd34d;border-radius:999px;color:#92400e;background:#fffbeb;font-size:.66rem;font-weight:950}
.textbook-table-events{display:flex;gap:6px;padding:0 15px 11px;overflow-x:auto;background:var(--surface);scrollbar-width:thin}
.textbook-table-events .relation-event-btn{width:auto;min-width:180px;flex:0 0 auto}
.textbook-table-scroll{max-width:100%;overflow:auto;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.textbook-table{width:100%;min-width:680px;border-collapse:collapse;font-size:.78rem}
.textbook-table th,.textbook-table td{padding:9px 10px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);line-height:1.58;vertical-align:top;text-align:left}
.textbook-table thead th{position:sticky;top:0;z-index:1;min-width:145px;color:var(--ink);background:color-mix(in srgb,var(--surface-2) 88%,#fef3c7 12%);font-size:.72rem}
.textbook-table thead th:first-child{left:0;z-index:2;min-width:108px}.textbook-table tbody th{position:sticky;left:0;z-index:1;min-width:108px;color:#92400e;background:color-mix(in srgb,var(--surface-2) 92%,#fef3c7 8%);font-size:.72rem}
.textbook-table tr:last-child th,.textbook-table tr:last-child td{border-bottom:0}.textbook-table th:last-child,.textbook-table td:last-child{border-right:0}
.textbook-table-exam{margin:0;padding:11px 15px;color:var(--muted);background:var(--surface-2);font-size:.76rem;line-height:1.65}.textbook-table-exam strong{color:#92400e}
body.dark .textbook-table-kicker,body.dark .textbook-table-exam strong,body.dark .textbook-table tbody th{color:#fcd34d}
body.dark .textbook-table-count{color:#fde68a;background:#451a03;border-color:#92400e}

.literacy-backdrop{
  position:fixed;inset:0;z-index:92;display:grid;place-items:center;padding:18px;background:rgba(2,6,23,.74);backdrop-filter:blur(7px)
}
.literacy-backdrop[hidden]{display:none}
.literacy-dialog{
  width:min(1040px,100%);max-height:calc(100vh - 36px);display:flex;flex-direction:column;overflow:hidden;
  color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:0 30px 90px rgba(0,0,0,.42)
}
.literacy-head{display:flex;align-items:flex-start;gap:18px;padding:19px 21px 15px;border-bottom:1px solid var(--line);background:var(--surface)}
.literacy-head>div{min-width:0;flex:1}.literacy-kicker{color:#c2410c;font-size:.74rem;font-weight:950;letter-spacing:.1em}
.literacy-head h2{margin:3px 0 0;font-size:clamp(1.25rem,3vw,1.7rem)}
.literacy-head p{margin:5px 0 0;color:var(--muted);font-size:.82rem;line-height:1.55}
.literacy-tabs{display:flex;gap:7px;flex-wrap:wrap;padding:11px 21px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.literacy-tab{min-height:36px;padding:0 13px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--surface);cursor:pointer;font-size:.8rem;font-weight:900}
.literacy-tab.active{color:#9a3412;background:#ffedd5;border-color:#fb923c}
.literacy-summary{padding:9px 21px;color:var(--muted);background:var(--surface);border-bottom:1px solid var(--line);font-size:.76rem;font-weight:800}
.literacy-content{min-height:0;overflow:auto;padding:16px 21px 22px}
.literacy-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.literacy-card{position:relative;display:flex;gap:13px;padding:15px;border:1px solid var(--line);border-radius:17px;background:var(--surface-2)}
.literacy-card-number{width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;border-radius:11px;color:#fff;background:linear-gradient(135deg,#ea580c,#f59e0b);font-size:.72rem;font-weight:950}
.literacy-card-main{min-width:0;flex:1}.literacy-card-tag{display:inline-block;color:#c2410c;font-size:.67rem;font-weight:950;letter-spacing:.06em}
.literacy-card h3{margin:3px 0 8px;font-size:1rem}.literacy-card ul{margin:0;padding-left:19px}.literacy-card li{margin:4px 0;color:var(--muted);font-size:.82rem;line-height:1.55}
.literacy-tip{margin:10px 0 0;padding:9px 10px;border-left:3px solid #f59e0b;border-radius:0 9px 9px 0;color:#78350f;background:#fffbeb;font-size:.78rem;line-height:1.55}
body.dark .literacy-card-tag{color:#fdba74}body.dark .literacy-tip{color:#fde68a;background:#451a03}

.help-panel{
  position:fixed;right:18px;top:76px;z-index:60;width:min(420px,calc(100vw - 36px));max-height:calc(100vh - 94px);overflow:auto;
  padding:18px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)
}
.help-panel[hidden]{display:none}
.help-panel h2{margin:0 0 10px;font-size:1.15rem}
.help-panel p,.help-panel li{color:var(--muted);font-size:.84rem;line-height:1.7}
.help-panel ul{padding-left:20px}
.help-close{float:right;border:0;background:transparent;color:var(--muted);cursor:pointer;font-size:1.2rem}
.period-track-group{display:inline-flex;margin-right:6px;padding:2px 6px;border-radius:999px;color:#9a3412;background:#ffedd5;font-size:.68rem;font-weight:900}.supplemental-note{border-style:dashed}
body.dark .period-track-group{color:#fed7aa;background:#7c2d12}

.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

@media (max-width:1050px){
  :root{--label-width:168px}
  .topbar{align-items:flex-start}.page-title p{display:none}
  .control-row{flex-wrap:wrap}.control-group.grow{order:3;width:100%;flex-basis:100%}.search-wrap{max-width:none}
  .zoom-control{margin-left:auto;flex-wrap:wrap;justify-content:flex-end}
  .zoom-presets{flex-basis:100%;justify-content:flex-end}
  .jump-list{flex:1}
  .history-affiliate-grid{grid-template-columns:1fr}.history-affiliate-head{align-items:flex-start;flex-direction:column}.history-affiliate-disclosure{max-width:none;text-align:left}
}
@media (max-width:700px){
  :root{--label-width:140px;--axis-height:66px}
  body{overflow:hidden}.app-shell{grid-template-rows:auto auto minmax(0,1fr) auto}
  .topbar{padding:9px 11px;gap:9px;overflow:hidden}.brand span:last-child{display:none}.brand-mark{width:36px;height:36px}.page-title h1{font-size:.98rem}
  .top-actions{gap:5px}.toolbar-btn,.back-link{width:38px;min-width:38px;padding:0;font-size:0}.toolbar-btn::first-letter,.back-link::first-letter{font-size:1rem}
  .back-link{display:none}
  .controls{padding:8px;overflow:hidden}.control-row{gap:6px}.control-label{display:none}.select{max-width:130px}.zoom-range{width:88px}
  .zoom-control{width:100%;margin-left:0;justify-content:flex-start}
  .zoom-presets{max-width:100%;overflow-x:auto;justify-content:flex-start;scrollbar-width:thin}
  .controls .control-row:first-child{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr) minmax(0,.9fr) 38px}
  .controls .control-row:first-child .control-group{min-width:0}
  .controls .control-row:first-child .control-group.grow{grid-column:1/-1;grid-row:2;width:auto;order:initial}
  .controls .control-row:first-child .select{width:100%;max-width:none;padding-left:8px;padding-right:24px}
  .relation-backdrop{padding:7px}.relation-dialog{max-height:calc(100vh - 14px);border-radius:17px}.relation-head{padding:14px}.relation-head p{display:none}
  .relation-tools{align-items:stretch;flex-direction:column;padding:9px 14px}.relation-search-wrap{width:100%}.relation-summary{padding:8px 14px}.relation-content{padding:0 14px 14px}
  .textbook-table-list{gap:11px;padding-top:11px}.textbook-table-card{border-radius:13px}.textbook-table-head{padding:11px 12px 9px}.textbook-table-count{display:none}.textbook-table-events{padding:0 12px 9px}.textbook-table-events .relation-event-btn{min-width:165px}.textbook-table{font-size:.73rem}.textbook-table th,.textbook-table td{padding:8px}.textbook-table-exam{padding:9px 12px}
  .literacy-backdrop{padding:7px}.literacy-dialog{max-height:calc(100vh - 14px);border-radius:17px}.literacy-head{padding:14px}.literacy-head p{display:none}
  .literacy-tabs{padding:9px 14px}.literacy-summary{padding:8px 14px}.literacy-content{padding:12px 14px 14px}.literacy-grid{grid-template-columns:1fr}.literacy-card{padding:13px;gap:10px}
  .exam-backdrop{padding:7px}.exam-dialog{max-height:calc(100vh - 14px);border-radius:17px}.exam-head{padding:14px}.exam-head p{display:none}.exam-tools{grid-template-columns:1fr 1fr;padding:9px 14px}.exam-search-wrap{grid-column:1/-1}.exam-summary{padding:8px 14px}.exam-content{padding:12px 14px 14px}.exam-list{grid-template-columns:1fr}.exam-media-grid{grid-template-columns:1fr}.exam-answer-panel{grid-template-columns:1fr}.exam-answer-key{min-height:46px}
  .timeline-area{padding:7px}.timeline-card{border-radius:15px}.timeline-status{padding:6px 9px}.legend{display:none}
  .history-affiliate{padding:0 7px 7px}.history-affiliate-details{max-height:46vh;border-radius:14px}.history-affiliate-details>summary{padding:7px 9px}.history-affiliate-summary-hint{display:none}.history-affiliate-body{padding:10px}.history-affiliate-head{margin-bottom:9px}.history-affiliate-grid{gap:8px}.history-affiliate-card{padding:11px}
  .lane-label{padding:13px 9px;gap:7px}.lane-name{font-size:.78rem}.lane-description{display:none}.lane-stripe{height:34px;width:5px;flex-basis:5px}
  .lane-heading{padding-right:27px}.region-detail-btn{top:6px;right:5px;width:27px;min-width:27px;height:27px;min-height:27px;padding:0;font-size:0}
  .region-detail-btn::before{content:"+";font-size:.9rem}.region-detail-btn.active::before{content:"−"}
  .medium-track-label{left:8px;right:5px}.medium-track-label small{display:none}.medium-event-label{left:8px}
  .modal-grid{grid-template-columns:1fr}.modal-section.full{grid-column:auto}
}

@media print{
  @page{size:A3 landscape;margin:8mm}
  body{overflow:visible;background:#fff;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .app-shell{height:auto;display:block}.topbar,.controls,.timeline-status,.history-affiliate,.help-panel,.modal-backdrop,.exam-backdrop{display:none!important}
  .timeline-area{padding:0}.timeline-card{display:block;border:0;box-shadow:none}.timeline-viewport{overflow:visible;height:auto}.timeline-canvas{transform-origin:top left}
  .timeline-axis{position:relative}.axis-corner,.lane-label{position:absolute;left:0}
}

/* 雙時間比例切換 */
.scale-mode-control .select{min-width:118px}
.scale-mode-control{flex:0 0 auto}
@media (max-width:720px){
  .scale-mode-control{width:auto}
  .scale-mode-control .select{min-width:110px;max-width:120px}
}
\n\n/* 聚焦式操作導覽：比照科學史時間軸 */
.onboarding-backdrop{position:fixed;inset:0;z-index:2147480000;background:transparent;pointer-events:none;isolation:isolate;overflow:visible}
.onboarding-backdrop[hidden]{display:none}
.onboarding-backdrop::before{display:none!important}
.onboarding-spotlight{position:fixed;z-index:2147480001;border:3px solid #facc15;border-radius:16px;background:transparent;box-shadow:0 0 0 9999px rgba(2,6,23,.64),0 0 0 5px rgba(250,204,21,.16),0 0 34px rgba(250,204,21,.62);transition:left .25s ease,top .25s ease,width .25s ease,height .25s ease;pointer-events:none}
.onboarding-dialog{position:fixed;z-index:2147480002;padding:18px 18px 14px;color:#e2e8f0;background:rgba(15,23,42,.96);border:1px solid rgba(250,204,21,.42);border-radius:20px;box-shadow:0 24px 70px rgba(0,0,0,.55);backdrop-filter:blur(16px);pointer-events:auto;transition:left .24s ease,top .24s ease}
.onboarding-dialog::before{content:"";position:absolute;width:14px;height:14px;left:28px;top:-8px;transform:rotate(45deg);background:rgba(15,23,42,.96);border-left:1px solid rgba(250,204,21,.42);border-top:1px solid rgba(250,204,21,.42)}
.onboarding-dialog[data-placement="above"]::before{top:auto;bottom:-8px;transform:rotate(225deg)}
.onboarding-dialog[data-placement="side"]::before{display:none}
.onboarding-close{position:absolute;right:10px;top:9px;width:32px;height:32px;border:0;border-radius:50%;color:#94a3b8;background:rgba(255,255,255,.07);cursor:pointer;font-size:1.1rem}
.onboarding-step{padding-right:34px;color:#facc15;font-size:.74rem;font-weight:950;letter-spacing:.08em}
.onboarding-dialog h2{margin:6px 0 8px;color:#fff7ed;font-size:1.12rem}
.onboarding-dialog p{margin:0 0 14px;color:#cbd5e1;font-size:.9rem;line-height:1.65}
.onboarding-actions{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:4px}
.onboarding-buttons{display:flex;gap:7px}
.onboarding-primary,.onboarding-secondary{min-height:36px;padding:0 12px;border-radius:999px;cursor:pointer;font-weight:900}
.onboarding-primary{border:0;color:#422006;background:#facc15}.onboarding-secondary{border:1px solid rgba(255,255,255,.12);color:#cbd5e1;background:rgba(255,255,255,.07)}
.onboarding-progress-text{color:#94a3b8;font-size:.78rem;font-weight:850}
.onboarding-check{display:flex;align-items:center;gap:6px;margin-top:11px;color:#94a3b8;font-size:.74rem;cursor:pointer}.onboarding-check input{accent-color:#facc15}
@media(max-width:700px){.onboarding-dialog{left:14px!important;right:14px!important;top:auto!important;bottom:14px!important;width:auto!important}.onboarding-dialog::before{display:none}.onboarding-actions{flex-wrap:wrap}.onboarding-check{margin-top:8px}.onboarding-spotlight{border-radius:12px}}

body.onboarding-active .timeline-axis,
body.onboarding-active .axis-corner,
body.onboarding-active .lane-label{z-index:auto!important}
body.onboarding-active .onboarding-spotlight,
body.onboarding-active .onboarding-dialog{visibility:visible!important}
@media print{.onboarding-backdrop{display:none!important}}\n
/* v29 列印修正：列印時保持事件卡文字，不轉成小圓點 */
@media print{
  .event-card{min-width:88px!important;height:25px!important;border-width:1px!important;border-radius:7px!important;padding:2px 5px!important;overflow:hidden!important;background:#fff!important;color:#111827!important;box-shadow:none!important}
  .event-card .event-title{display:inline!important;font-size:8.5pt!important;color:#111827!important}
  .event-card .event-year{display:inline!important;font-size:7.5pt!important;color:#334155!important;margin-right:3px!important}
  .event-card .curriculum-badge{display:inline-flex!important;width:15px!important;height:15px!important;min-width:15px!important;font-size:7pt!important}
  .event-card.dot-mode{width:auto!important;max-width:184px!important;border-radius:7px!important}
  .event-card.dot-mode .event-title,.event-card.dot-mode .event-year,.event-card.dot-mode .curriculum-badge{display:inline!important}
  .lane{break-inside:avoid;page-break-inside:avoid}
}


/* v30｜事件因果與教材比較卡 */
.event-detail-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:4px 0 18px;padding:5px;border-radius:16px;background:color-mix(in srgb,var(--panel) 82%,transparent);border:1px solid var(--line)}
.event-detail-tab{border:0;background:transparent;color:var(--muted);padding:10px 16px;border-radius:12px;font-weight:900;cursor:pointer;display:inline-flex;align-items:center;gap:7px}
.event-detail-tab span{min-width:22px;height:22px;padding:0 6px;border-radius:999px;display:inline-grid;place-items:center;background:var(--line);font-size:.76rem}
.event-detail-tab.active{background:var(--modal-color);color:white;box-shadow:0 8px 22px color-mix(in srgb,var(--modal-color) 32%,transparent)}
.event-context-note{padding:12px 14px;margin-bottom:14px;border-radius:14px;background:color-mix(in srgb,var(--modal-color) 10%,var(--panel));border:1px solid color-mix(in srgb,var(--modal-color) 28%,var(--line));color:var(--muted);line-height:1.65;font-size:.9rem}
.event-context-empty{display:flex;flex-direction:column;gap:8px;padding:24px;border:1px dashed var(--line);border-radius:16px;background:var(--panel);color:var(--muted)}
.event-context-empty strong{color:var(--text)}
.causal-group{margin-top:16px}.causal-group h4{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-size:1rem}.causal-group h4 span{font-size:.75rem;padding:3px 8px;border-radius:999px;background:var(--line)}
.causal-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px}
.causal-item{display:grid;grid-template-columns:auto 1fr;gap:11px;text-align:left;padding:13px;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--text);cursor:pointer}.causal-item:hover{border-color:var(--modal-color);transform:translateY(-1px)}
.causal-date{font-weight:900;color:var(--modal-color);white-space:nowrap}.causal-copy{display:flex;flex-direction:column;gap:4px}.causal-copy small{line-height:1.5;color:var(--muted)}.causal-copy em{font-style:normal;font-size:.75rem;color:var(--muted)}
.event-comparison-list{display:grid;gap:16px}.event-comparison-card{border:1px solid var(--line);border-radius:16px;background:var(--panel);overflow:hidden}.event-comparison-card>header{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;padding:15px 16px;border-bottom:1px solid var(--line)}.event-comparison-card h4{margin:3px 0 0}.event-comparison-card header small{color:var(--muted)}.event-comparison-card header>span{white-space:nowrap;font-size:.78rem;padding:5px 9px;border-radius:999px;background:var(--line)}.event-comparison-tip{margin:0;padding:12px 16px;border-top:1px solid var(--line);color:var(--muted);line-height:1.6}
@media(max-width:680px){.event-detail-tab{flex:1;justify-content:center;padding:9px 10px}.causal-list{grid-template-columns:1fr}}


/* 清代臺灣行政區劃圖解：事件小卡共用圖片 */
.event-visual-main {
  margin: 0;
  display: grid;
  gap: 10px;
}
.event-visual-main a {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line, #c9c2b6);
  border-radius: 14px;
  background: #f6f2e9;
}
.event-visual-main img {
  display: block;
  width: 100%;
  height: auto;
}
.event-visual-main figcaption {
  display: grid;
  gap: 4px;
  color: var(--muted, #625f58);
  line-height: 1.6;
}
.event-visual-main figcaption strong { color: var(--ink, #24211d); }
.related-visual-card {
  display: grid;
  grid-template-columns: minmax(150px, 30%) 1fr;
  gap: 14px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line, #c9c2b6);
  border-radius: 14px;
  color: inherit;
  text-decoration: none;
  background: color-mix(in srgb, var(--panel, #fff) 92%, #b8aa8f 8%);
}
.related-visual-card:hover { transform: translateY(-1px); border-color: var(--modal-color, #776d5c); }
.related-visual-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 9px;
}
.related-visual-card span { display: grid; gap: 6px; }
.related-visual-card small { color: var(--muted, #625f58); line-height: 1.55; }
.related-visual-card em { font-style: normal; font-size: .84rem; color: var(--modal-color, #776d5c); }
@media (max-width: 640px) {
  .related-visual-card { grid-template-columns: 1fr; }
}