.presentation-trigger{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--ink);min-height:40px;padding:0 13px;border:1px solid var(--line);border-radius:999px;margin-left:auto;margin-right:16px;white-space:nowrap}
.presentation-trigger+.theme-toggle{margin-left:0}
.presentation-trigger:hover{background:var(--hover);color:var(--strong)}
.presentation{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;background:#090b0a;overflow:hidden;isolation:isolate;--present-scale:1}
.presentation:fullscreen{width:100%;height:100%;padding:0}
.presentation-frame{position:relative;display:grid;grid-template-rows:14% minmax(0,1fr) 16%;background:var(--paper);color:var(--ink);padding:0 4%;overflow:hidden;container-type:inline-size}
.presentation-head{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--faint);min-width:0}
.presentation-category{font-size:clamp(10px,calc(24px * var(--present-scale)),34px);color:var(--muted);margin:0;letter-spacing:.06em}
.presentation-head h1{font-size:clamp(15px,calc(40px * var(--present-scale)),64px);line-height:1.25;margin:4px 0 0;font-weight:500;letter-spacing:-.03em}
.presentation-exit{font-size:clamp(12px,calc(20px * var(--present-scale)),32px);min-height:44px;padding:6px 12px;white-space:nowrap;color:var(--muted)}
.presentation-body{display:grid;grid-template-columns:minmax(0,70fr) minmax(0,30fr);min-height:0;gap:3.5%;padding:3.2% 0 2.2%}
.presentation-visual{position:relative;min-width:0;min-height:0;overflow:hidden;border-radius:2px}
.presentation .presentation-model{position:absolute;inset:0;min-height:0;max-height:none;aspect-ratio:auto;width:100%;height:100%}
.presentation .presentation-model>svg{display:block;width:100%;height:100%;min-height:0;max-height:none;aspect-ratio:auto}
.presentation-model .callouts{display:none}
.presentation-3d{position:absolute;inset:0;width:100%;height:100%;border:0;background:var(--paper);opacity:0;pointer-events:none}
.presentation-3d[data-visible]{opacity:1;pointer-events:auto}
.presentation-copy{border-left:1px solid var(--faint);padding-left:10%;display:flex;flex-direction:column;justify-content:center;min-width:0;overflow:hidden}
.presentation-kicker{font-family:var(--mono);color:var(--muted);font-size:clamp(9px,calc(20px * var(--present-scale)),30px);letter-spacing:.12em;margin:0 0 1em}
.presentation-copy h2{font-size:clamp(16px,calc(48px * var(--present-scale)),66px);font-weight:500;line-height:1.32;letter-spacing:-.035em;margin:0 0 .55em;overflow-wrap:anywhere}
.presentation-copy p[data-copy]{font-size:clamp(10px,calc(28px * var(--present-scale)),40px);line-height:1.75;margin:0;white-space:pre-line;overflow-wrap:anywhere}
.presentation-page{font-family:var(--mono);color:var(--muted);font-size:clamp(9px,calc(18px * var(--present-scale)),26px);margin-top:1.2em;min-height:1.5em}
.presentation-foot{border-top:1px solid var(--faint);padding-top:1.3%;display:flex;flex-direction:column;justify-content:space-between;padding-bottom:1.4%;gap:5px;min-height:0}
.presentation-chapters{display:flex;justify-content:space-between;gap:2%;font-size:clamp(9px,calc(22px * var(--present-scale)),32px);color:var(--muted)}
.presentation-chapters span{display:flex;gap:.55em;align-items:center;white-space:nowrap}
.presentation-chapters span:before{content:attr(data-number);font-family:var(--mono);font-size:.7em;opacity:.6}
.presentation-chapters [aria-current="step"]{color:var(--strong)}
.presentation-chapters [data-past]{color:var(--accent)}
.presentation-track{height:2px;background:var(--faint);overflow:hidden}
.presentation-progress{height:100%;width:100%;transform-origin:left;transform:scaleX(0);background:var(--accent)}
.presentation-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:36px}
.presentation-position{font-family:var(--mono);font-size:clamp(10px,calc(18px * var(--present-scale)),28px);color:var(--muted);white-space:nowrap}
.presentation-controls{display:flex;align-items:center;gap:clamp(6px,1.2vw,24px)}
.presentation-controls button{font-size:clamp(12px,calc(20px * var(--present-scale)),30px);min-height:44px;min-width:44px;padding:0 8px;border-radius:4px}
.presentation-controls button:hover{background:var(--hover)}
.presentation-controls [data-action="pause"]{min-width:90px;color:var(--strong)}
.presentation-transport,.presentation-exit{transition:opacity .2s}
.presentation[data-controls-hidden] .presentation-transport,.presentation[data-controls-hidden] .presentation-exit{opacity:0;pointer-events:none}
.presentation-status{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:12px;font-size:clamp(12px,calc(26px * var(--present-scale)),36px);padding:24px;text-align:center;background:var(--paper);z-index:2}
.presentation-notice{position:absolute;top:6px;left:50%;transform:translateX(-50%);color:#dce5dd;font-size:12px;white-space:nowrap;z-index:3;background:#171a19de;border-radius:6px;padding:5px 12px;max-width:95vw}
.presentation-rotate-hint{display:none;position:absolute;bottom:max(90px,env(safe-area-inset-bottom));font-size:12px;color:#b1b9b3}
.presentation-empty-action{border:1px solid var(--line);padding:6px 16px;border-radius:999px;margin-left:12px;min-height:44px}
.presentation .iso-svg[data-mode="structure"]{cursor:default}
@media(max-width:700px){
 .presentation-trigger{padding:0 10px;margin-right:10px;font-size:11px;min-height:44px}
 .presentation-head{gap:6px}.presentation-head h1{margin-top:1px}
 .presentation-exit{padding:2px 4px;font-size:11px;min-height:28px}
 .presentation-frame{padding:0 3%;grid-template-rows:16% minmax(0,1fr) 14%}
 .presentation-body{gap:2%;padding:2% 0}.presentation-copy{padding-left:8%}
 .presentation-copy h2{font-size:clamp(13px,3.2vw,22px);margin-bottom:.3em}
 .presentation-kicker{margin-bottom:.4em;font-size:8px}.presentation-page{font-size:8px;margin-top:.5em}
 .presentation-bottom{min-height:0}.presentation-chapters{font-size:8px}.presentation-chapters span:before{display:none}
 .presentation-controls{gap:2px}.presentation-controls button{font-size:12px;padding:0 6px}
 .presentation-transport{position:fixed;bottom:max(14px,env(safe-area-inset-bottom));left:0;right:0;justify-content:center;display:flex;color:#eef2ee}
 .presentation-controls [data-action="pause"]{min-width:70px}
 .presentation-transport .presentation-controls button{color:#eef2ee}
 .presentation-position{font-size:9px}.presentation-notice{font-size:10px;white-space:normal;text-align:center}
}
@media(max-width:700px) and (orientation:portrait){.presentation-rotate-hint{display:block}}
@media(min-width:701px) and (max-height:600px){
 .presentation-frame{grid-template-rows:16% minmax(0,1fr) 24%}
 .presentation-foot{padding-top:1%;padding-bottom:1%;gap:3px}
 .presentation-controls{gap:4px}.presentation-controls button{font-size:12px;padding:0 6px}
 .presentation-controls [data-action="pause"]{min-width:70px}
 .presentation-exit{min-height:32px;font-size:11px}
}
@media(prefers-reduced-motion:reduce){.presentation-transport,.presentation-exit{transition:none}}