:root{
  color-scheme:light dark;
  --bg:light-dark(#FCFEFE,#08100F);
  --card:light-dark(#FFFFFF,#0F1A19);
  --ink:light-dark(#1F2937,#E4EFED);
  --muted:light-dark(#6B7280,#8FA3A0);
  --accent:light-dark(#0D9488,#2DD4BF);
  --accent-soft:light-dark(#CCFBF1,rgba(45,212,191,.13));
  --line:light-dark(#D1E7E3,#1D2E2C);
  --warn:light-dark(#B45309,#FBBF24);
  --sans:system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,monospace;
}
:root[data-theme="light"]{color-scheme:only light}
:root[data-theme="dark"]{color-scheme:only dark}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:18px;line-height:1.5;-webkit-font-smoothing:antialiased;text-wrap:pretty;display:flex;flex-direction:column;min-height:100vh}
.progress{position:fixed;top:0;left:0;right:0;height:2px;background:var(--line);z-index:5}
.progress span{display:block;height:100%;background:var(--accent)}
.stage{position:relative;z-index:1;width:100%;max-width:1100px;margin:auto;padding:88px 40px 120px;flex:1 0 auto;display:flex;flex-direction:column;justify-content:center}
.eyebrow{font-size:12px;font-weight:650;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 22px;display:flex;align-items:center;gap:12px}
.eyebrow::after{content:"";height:1px;flex:1;background:var(--line)}
h1{font-size:clamp(32px,4.6vw,50px);line-height:1.06;letter-spacing:-.028em;font-weight:700;margin:0 0 22px}
h2{font-size:clamp(24px,2.8vw,32px);line-height:1.1;letter-spacing:-.024em;font-weight:700;margin:0 0 28px}
p{margin:0 0 14px}
.lede{font-size:22px;line-height:1.45;max-width:24em}
.muted{color:var(--muted)}
.small{font-size:15px;line-height:1.5;color:var(--muted)}
.stage>.small:last-child{max-width:calc(100% - 230px)}
.num{font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.row{display:grid;gap:22px}
.row-2{grid-template-columns:repeat(2,1fr)}
.row-3{grid-template-columns:repeat(3,1fr)}
.row-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px}
table{width:100%;border-collapse:collapse;font-size:16px;font-variant-numeric:tabular-nums}
th{text-align:left;font-size:11px;font-weight:650;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:0 16px 12px 0;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:14px 16px 14px 0;border-bottom:1px solid var(--line);vertical-align:top}
th:last-child,td:last-child{padding-right:0}
tr:last-child td{border-bottom:none}
.chip{display:inline-block;font-size:11px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;padding:3px 9px;border-radius:6px;white-space:nowrap}
.nav{position:fixed;right:24px;bottom:20px;z-index:6;display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px;box-shadow:0 6px 20px light-dark(rgba(0,0,0,.07),rgba(0,0,0,.45))}
.nav a,.nav button{width:36px;height:36px;border-radius:999px;border:none;background:transparent;color:var(--ink);display:grid;place-content:center;font-size:17px;text-decoration:none;cursor:pointer;font-family:inherit}
.nav a:hover,.nav button:hover{background:var(--accent-soft);color:var(--accent)}
.nav a[aria-disabled="true"]{opacity:.28;pointer-events:none}
.nav .count{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;padding:0 8px;letter-spacing:.06em}
.nav .sep{width:1px;height:20px;background:var(--line);margin:0 2px}
.nav button svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
@media (max-width:860px){
  body{font-size:17px}
  .row-2,.row-3,.row-4{grid-template-columns:1fr}
  .stage{padding:64px 20px 104px}
  .nav{right:12px;bottom:12px}
  .stage>.small:last-child{max-width:100%}
}
@media print{
  @page{size:landscape;margin:0}
  html,body{height:auto}
  body{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .nav,.progress{display:none}
  .stage{padding:52px 60px;min-height:100vh;max-width:none;break-after:page}
  .card,tr{break-inside:avoid}
}

.stage{padding:80px 40px 116px}
p,li{font-size:18px}
.cover h1{font-size:clamp(32px,4.6vw,50px);max-width:22ch}
.agenda{display:grid;gap:12px;margin-top:8px;max-width:720px}
.ag{display:grid;grid-template-columns:64px minmax(0,1fr) auto;gap:18px;align-items:baseline;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 20px}
.ag b{font-family:var(--mono);font-size:14px;color:var(--accent)}
.ag h3{font-size:18.5px;font-weight:650;margin:0 0 3px;letter-spacing:-.012em}
.ag p{margin:0;font-size:15px;color:var(--muted)}
.ag .mins{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.def{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:14px;padding:24px 26px;max-width:60ch}
.def b{display:block;font-size:11.5px;font-weight:650;letter-spacing:.13em;text-transform:uppercase;color:var(--accent);margin-bottom:9px}
.def p{margin:0;font-size:21px;line-height:1.45}
.diagram{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.dbox{background:var(--accent-soft);border-radius:14px;padding:20px;text-align:center}
.dbox b{display:block;font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:light-dark(#0F766E,#5EEAD4);margin-bottom:8px}
.dbox span{font-size:16px;line-height:1.4;display:block;color:light-dark(#134E4A,#CFFAF5)}
.ba{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.pan{border:1px solid var(--line);border-radius:14px;padding:22px 24px;background:var(--card)}
.pan.before{border-color:light-dark(#E5E7EB,#2A2A2A)}
.pan.after{border-color:var(--accent)}
.pan h3{font-size:11.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;margin:0 0 14px;color:var(--muted)}
.pan.after h3{color:var(--accent)}
.pan q{display:block;font-size:19px;line-height:1.45;quotes:none;margin-bottom:14px}
.pan p{margin:0;font-size:15px;color:var(--muted);line-height:1.5}
.ex{background:var(--accent-soft);border-radius:16px;padding:30px 32px;max-width:820px}
.ex .top{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;margin-bottom:16px}
.ex .lbl{font-size:11.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:light-dark(#0F766E,#5EEAD4)}
.ex .time{font-size:12px;font-weight:650;background:var(--card);color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:3px 11px;font-variant-numeric:tabular-nums}
.ex h2{font-size:clamp(21px,2.4vw,27px);margin:0 0 14px;color:light-dark(#134E4A,#EAFFFC)}
.ex p{font-size:18px;margin:0 0 12px;color:light-dark(#134E4A,#CFFAF5)}
.ex ol{margin:12px 0 0;padding-left:22px;display:grid;gap:8px;color:light-dark(#134E4A,#CFFAF5)}
.ex .foot{margin:20px 0 0;padding-top:14px;border-top:1px solid light-dark(rgba(13,148,136,.28),rgba(45,212,191,.24));font-size:15px;color:light-dark(#0F766E,#9FE9E0)}
.ex .foot b{color:var(--warn)}
.quiz{display:grid;gap:14px;max-width:840px}
.qi{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 22px}
.qi h3{font-size:18px;font-weight:600;margin:0;letter-spacing:-.01em;display:grid;grid-template-columns:26px minmax(0,1fr);gap:12px}
.qi h3 b{font-family:var(--mono);font-size:14px;color:var(--accent);font-weight:600}
.qi .ans{display:none;margin:14px 0 0;padding-left:38px;font-size:16.5px;color:var(--accent);line-height:1.5}
.qi[data-open="true"] .ans{display:block}
.qi button{margin:12px 0 0 38px;font:inherit;font-size:13px;font-weight:600;background:transparent;border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:5px 14px;cursor:pointer}
.qi button:hover{border-color:var(--accent);color:var(--accent)}
@media (max-width:860px){.diagram,.ba{grid-template-columns:1fr}.ag{grid-template-columns:44px minmax(0,1fr);gap:12px}.ag .mins{grid-column:2}}
@media print{
  .qi .ans{display:block !important}
  .qi button{display:none}
  .qi,.ex,.pan{break-inside:avoid}
}