:root{--bg:#f3f0e8;--ink:#1d302c;--muted:#5b6965;--accent:#c04c31;--line:#c8cec5;--surface:#fffdf7;--space:clamp(1.25rem,4vw,3.5rem)}*{box-sizing:border-box}body{margin:0;background:#d8dcd5;color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif}.deck{width:min(100vw,177.78vh);margin:0 auto}.slide{display:none;position:relative;min-height:100vh;aspect-ratio:16/9;background:var(--bg);padding:var(--space);overflow:auto}.slide.active{display:flex;flex-direction:column;justify-content:center}.cover{background:var(--ink);color:var(--bg)}.eyebrow{font:12px ui-monospace,monospace;letter-spacing:.14em;color:var(--accent);text-transform:uppercase}.cover .eyebrow{color:#e6a28d}h1{font-size:clamp(2.8rem,7vw,6.5rem);line-height:1.02;letter-spacing:-.055em;max-width:12ch;margin:.7em 0}h1 em{font-family:Georgia,serif;font-weight:400;color:#e6a28d}h2.slide-title{font-size:clamp(2rem,4.2vw,4rem);line-height:1.08;letter-spacing:-.04em;max-width:20ch;margin:.5em 0 .8em}h3{font-size:1.35rem}p,li{font-size:clamp(1rem,1.5vw,1.4rem);line-height:1.55;max-width:68ch}.subtitle{font-size:clamp(1.1rem,2vw,1.8rem)}.source-note{font-size:.82rem;color:var(--muted);margin-top:auto;padding-top:1.5rem}.cover .source-note{color:#c6d0c8}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:var(--space)}.takeaway{border-left:4px solid var(--accent);padding:1rem 1.4rem;background:rgba(192,76,49,.07)}.metric{display:flex;align-items:baseline;gap:1rem}.metric strong{font-size:clamp(3.5rem,9vw,8rem);color:var(--accent);line-height:1}.metric span{font-size:1rem;color:var(--muted)}.controls{position:fixed;bottom:12px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:12px;padding:8px 12px;background:#fffdf0e8;border:1px solid var(--line);border-radius:999px;font-size:12px;white-space:nowrap}.controls button{font:inherit;border:0;background:var(--ink);color:white;padding:7px 10px;border-radius:999px;cursor:pointer}.controls button:disabled{opacity:.35;cursor:default}.hint{color:var(--muted)}body.overview .deck{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:10px;width:100%;max-width:none}body.overview .slide{display:flex;min-height:0;aspect-ratio:16/9;padding:18px;overflow:hidden}body.overview h1{font-size:clamp(1.2rem,3vw,3rem)}body.overview h2.slide-title{font-size:clamp(1rem,2vw,2rem)}body.overview p,body.overview li{font-size:clamp(.7rem,1vw,1rem)}body.overview .controls{display:none}@media(max-width:680px){.slide{aspect-ratio:auto;min-height:100svh}.grid-2{grid-template-columns:1fr}.hint{display:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media print{body{background:white}.deck{width:100%;max-width:none}.slide,.slide.active{display:flex!important;aspect-ratio:16/9;min-height:0;height:100vh;break-after:page;overflow:hidden;padding:20mm}.controls{display:none}body.overview .deck{display:block}body.overview .slide{display:flex}}