@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700&display=swap');
:root{
  --aw-ink:light-dark(#1c292b,#e9ece7);--aw-muted:light-dark(#566664,#aab6b0);--aw-faint:light-dark(#647970,#8f9c96);
  --line:light-dark(#d5dedd,#333a37);--green:light-dark(#316851,#8ccfac);--aw-strong:light-dark(#245c45,#a9e2c4);
  --aw-tint:light-dark(#e8f0eb,#1c2a23);--aw-chip:light-dark(#fbfaf7f0,#1f2321ee);--aw-chip-line:light-dark(#c5d1ce,#454e4a);
  --aw-chip-ink:light-dark(#2e433b,#dfe8e3);--aw-on:light-dark(#2b4c40,#cfeedd);--aw-on-ink:light-dark(#ffffff,#13261d);
  --aw-field:light-dark(#ffffff,#191c1b);--aw-stage:light-dark(#efebe4,#1b1916);--aw-tag:light-dark(#fffdf9f2,#191b1af0);
  --aw-tag-line:light-dark(#2f5e4a,#8ccfac);--aw-leader:light-dark(#2f4a40,#d6e7dd);
  --plot-grid:light-dark(#dce4df,#2f3633);--plot-ink:light-dark(#5c7066,#9fb0a8);--plot-dot:light-dark(#203e2f,#e2efe7);
  --plot-green:light-dark(#2f7a52,#6fd39c);--plot-red:light-dark(#b2434d,#ff7f89);
  font-family:'DM Sans',sans-serif;color:var(--aw-ink);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}
header{height:76px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 4vw;gap:20px}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}header a{font-size:13px}
.brand{font-weight:700;text-decoration:none;letter-spacing:.14em}.brand span{color:var(--aw-faint);margin-left:14px}
.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:600}
main{max-width:1600px;margin:auto;padding:30px 4vw 0;color:var(--aw-ink)}
.intro{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:26px}
h1,h2,p{margin:0}h1{font:500 clamp(28px,3.2vw,44px)/1.15 'Manrope',sans-serif;letter-spacing:-.045em}.intro p{color:var(--aw-muted);font-size:15px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:20px}
.steps button{padding:19px 10px;background:none;border:0;text-align:left;font-size:15px;color:var(--aw-muted);border-bottom:2px solid transparent}
.steps button span{margin-right:14px;font-size:12px}.steps button[aria-pressed=true]{color:var(--aw-strong);border-bottom-color:var(--aw-strong)}
button,input,select{font:inherit}button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #387be7;outline-offset:4px}
.lab{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px}
.stage{position:relative;background:var(--aw-stage);min-height:600px;border-radius:6px;overflow:hidden}
#scene{position:absolute;inset:0}#scene canvas{display:block;width:100%;height:100%;touch-action:none}
.scene-heading{position:absolute;top:18px;left:18px;z-index:2;pointer-events:none;display:grid;gap:5px;background:var(--aw-tag);padding:8px 11px;border-radius:4px;box-shadow:0 1px 3px #0000001a}
.scene-heading span{font-size:12px;letter-spacing:.14em;color:var(--aw-ink)}.scene-heading small{font-size:12px;color:var(--aw-muted)}
.views{position:absolute;bottom:58px;left:20px;right:20px;display:flex;flex-wrap:wrap;justify-content:center;gap:6px;z-index:2}
.views button,.stage-footer button{border:1px solid var(--aw-chip-line);border-radius:5px;background:var(--aw-chip);padding:10px 13px;font-size:13px;color:var(--aw-chip-ink)}
.views button[aria-pressed=true]{background:var(--aw-on);color:var(--aw-on-ink);border-color:var(--aw-on)}
.stage-footer{position:absolute;bottom:16px;left:23px;right:23px;display:flex;justify-content:space-between;align-items:center;gap:12px;z-index:2}
.stage-footer span{font-size:12px;color:var(--aw-muted);flex:1;min-width:0}.stage-footer button{padding:6px 13px;min-height:32px;flex-shrink:0;white-space:nowrap}
#labels{position:absolute;inset:0;pointer-events:none;z-index:1}
#labels svg.leaders{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
#labels svg path{fill:none;stroke:var(--aw-leader);stroke-width:1.1;opacity:.85}#labels svg circle{fill:var(--aw-tag);stroke:var(--aw-leader);stroke-width:1.4}
.tag{position:absolute;font-size:12px;line-height:1.25;color:var(--aw-ink);background:var(--aw-tag);padding:5px 8px;border-left:2px solid var(--aw-tag-line);white-space:nowrap;box-shadow:0 2px 8px #0000001c;border-radius:2px}
.legend3d{position:absolute;top:18px;right:18px;z-index:2;display:grid;gap:6px;background:var(--aw-tag);padding:9px 12px;border-radius:4px;font-size:12px;color:var(--aw-ink);pointer-events:none;box-shadow:0 1px 3px #0000001a;max-width:270px}
.legend3d span{display:flex;align-items:center;gap:8px}.legend3d i{flex:none;display:inline-block}
.legend3d .ln{width:22px;height:2px;background:var(--c);opacity:.6;border-radius:2px}.legend3d .ln.hi{height:3px;opacity:1;box-shadow:0 0 6px var(--c)}
.legend3d .mk{width:11px;height:11px;border-radius:50%;background:#3a0207;box-shadow:0 0 0 2px #ffd6da,0 0 0 3px #00000033;margin:0 5px}
.legend3d .art{width:13px;height:13px;border-radius:50%;background:radial-gradient(circle,#8a0a18 52%,#f1c2b4 56%);margin:0 4px}
aside{padding:10px 0;display:flex;flex-direction:column}
.chapter h2{font:500 26px/1.2 'Manrope',sans-serif;letter-spacing:-.03em;margin:13px 0}.chapter p{font-size:16px;line-height:1.55;color:var(--aw-muted);min-height:99px}
.principle{font-size:14px;color:var(--green);background:var(--aw-tint);padding:13px 14px;margin-top:18px;border-radius:4px}
.controls{margin-top:22px}.controls label,.scrub-label{font-size:14px;display:flex;justify-content:space-between;margin-top:16px;margin-bottom:8px;gap:10px}
output{font-variant-numeric:tabular-nums;font-weight:600}input[type=range]{width:100%;accent-color:var(--green);margin:5px 0;height:18px}
.range-ends{display:flex;justify-content:space-between;font-size:12px;color:var(--aw-faint)}
select{width:100%;padding:10px 11px;border:1px solid var(--aw-chip-line);border-radius:4px;background:var(--aw-field);color:var(--aw-ink);font-size:14px}
.control-note{font-size:12px;line-height:1.45;color:var(--aw-muted);margin-top:9px}
.readout{border-top:1px solid var(--line);margin-top:20px;padding-top:19px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.readout small{display:block;font-size:12px;color:var(--aw-muted)}.readout strong{font:500 34px/1.4 'Manrope',sans-serif;font-variant-numeric:tabular-nums}
.readout em{font-style:normal;font-size:14px;color:var(--aw-muted)}#quality{font-size:12px;max-width:115px;text-align:right;color:var(--green)}
.signals{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:32px;padding:28px 0;display:grid;grid-template-columns:280px minmax(0,1fr);gap:42px}
.signal-intro h2{font:500 24px/1.3 'Manrope',sans-serif;letter-spacing:-.035em;margin:13px 0}.signal-intro p{font-size:14px;line-height:1.5;color:var(--aw-muted)}.signal-intro .control-note{font-size:12px}
.plots{min-width:0}.plot-label{display:flex;justify-content:space-between;gap:10px;font-size:14px;flex-wrap:wrap}.plot-label small{font-size:12px;color:var(--aw-faint);margin-left:5px}
.legend,#interval{font-size:12px;color:var(--green)}.plots canvas{width:100%;height:98px;display:block;margin:4px 0 10px}.plot-note{font-size:12px;color:var(--aw-muted);line-height:1.5}
.notes{display:grid;grid-template-columns:1fr 1.3fr 1fr;gap:40px;padding:32px 0}.notes h2{font-size:16px;font-weight:500;margin-bottom:12px}
.notes p{font-size:13px;line-height:1.6;color:var(--aw-muted)}.notes a{display:block;font-size:13px;line-height:1.6;margin-bottom:9px}
footer{font-size:12px;color:var(--aw-faint);padding:16px 0 24px;border-top:1px solid var(--line)}
#fallback{position:absolute;top:35%;left:15%;right:15%;line-height:1.6}#fallback h2{font-size:22px}#fallback p{font-size:16px;margin-top:15px}
[hidden]{display:none!important}
@media(min-width:1450px){.stage{min-height:660px}}
@media(max-width:1050px){header>.eyebrow{display:none}.intro{display:block}.intro p{margin-top:12px}.lab{grid-template-columns:minmax(0,1fr) 290px;gap:22px}.stage{min-height:620px}.steps button{font-size:14px}.steps button span{margin-right:5px}.legend3d{top:auto;bottom:108px;right:12px;left:12px;max-width:none;grid-template-columns:1fr 1fr}}
@media(max-width:760px){header{height:60px;padding:0 20px}main{padding:24px 18px 0}.lab{grid-template-columns:1fr;gap:18px}.stage{min-height:600px}.steps{grid-template-columns:repeat(2,1fr)}.steps button{padding:15px 6px}.intro{margin-bottom:22px}.chapter p{min-height:0}.controls{margin-top:4px}.signals{grid-template-columns:1fr;gap:24px}.notes{grid-template-columns:1fr;gap:26px}.views{left:10px;right:10px}.views button{padding:10px;font-size:12px;min-height:42px}.stage-footer button{min-height:40px}.plot-label{font-size:13px}.plot-label small{margin-left:3px}.tag{font-size:11px;padding:4px 6px}.scene-heading{left:12px;top:12px}.brand{font-size:12px}.brand span{margin-left:5px}.legend3d{font-size:11px;gap:4px 10px;padding:7px 9px;bottom:110px}.legend3d .ln{width:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.header-links{display:flex;gap:22px;align-items:center}html[lang=ja] h1{letter-spacing:-.03em}html[lang=ja] .chapter h2{line-height:1.45}html[lang=ja] .chapter p{line-height:1.7}html[lang=ja] .principle{line-height:1.65}html[lang=ja] .readout strong{font-size:30px}html[lang=ja] .readout em{font-size:13px}
@media(max-width:760px){.header-links{gap:13px}header a{font-size:12px}html[lang=ja] h1{font-size:27px}html[lang=ja] .stage-footer span{font-size:11px}html[lang=ja] .views button{padding:9px 8px}}
.plot-label .legend::before{content:"";display:inline-block;width:16px;height:2px;background:currentColor;vertical-align:middle;margin-right:6px}