:root{color-scheme:light;--ink:#202733;--muted:#637080;--blue:#245bd6;--line:#e3e7ed;--soft:#f4f6f9;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;font-size:16px;line-height:1.75}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button,a,video{outline-offset:5px}:focus-visible{outline:3px solid var(--blue)}.skip{position:absolute;left:16px;top:-80px;background:#fff;padding:10px;z-index:10}.skip:focus{top:12px}.hero,main,footer{width:min(1100px,calc(100% - 64px));margin-inline:auto}.hero{text-align:center;padding:49px 0 42px;border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;letter-spacing:.17em;font-weight:650;color:var(--muted);margin:0 0 10px}.hero .eyebrow{color:var(--blue);font-size:12px}h1{font-size:clamp(29px,4vw,44px);line-height:1.3;letter-spacing:-.035em;margin:0;font-weight:720}.subtitle{color:var(--muted);font-size:18px;margin:15px 0 24px}.subtitle span{margin:0 9px;color:#9ca6b4}nav{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}nav a{border:1px solid var(--line);border-radius:6px;padding:6px 16px;color:var(--ink);font-size:14px;transition:border-color .15s,background .15s}nav a:hover{border-color:#a7bdf0;background:#f6f9ff;text-decoration:none}nav span{color:var(--blue);margin-left:12px}section{padding:45px 0 46px;border-bottom:1px solid var(--line);scroll-margin-top:12px}.section-heading{display:flex;gap:16px;align-items:center}.section-number{font-size:14px;font-variant-numeric:tabular-nums;color:var(--blue);border-top:2px solid var(--blue);align-self:flex-start;padding-top:5px;margin-top:3px}.section-heading .eyebrow{margin-bottom:3px;font-size:11px}h2{font-size:27px;line-height:1.45;letter-spacing:-.02em;margin:0;font-weight:680}.title-detail{display:inline-block;font-size:20px;font-weight:450;color:var(--muted);margin-left:16px}.context{margin-left:auto;white-space:nowrap;font-size:13px;color:var(--muted)}.intro{color:var(--muted);margin:16px 0 26px}.comparison-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px}.comparison-toolbar p{font-size:14px;color:var(--muted);margin:0}.comparison-controls{display:flex;gap:8px}[hidden]{display:none!important}button{font:inherit;font-size:14px;line-height:1.5;background:var(--blue);color:#fff;border:1px solid var(--blue);border-radius:5px;padding:8px 14px;cursor:pointer}button:hover{background:#1747b7}button.secondary{background:#fff;color:var(--ink);border-color:var(--line)}button.secondary:hover{background:var(--soft)}button:disabled{opacity:.6;cursor:wait}.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}figure{margin:0;min-width:0}.video-heading{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin:0 0 10px}h3{font-size:16px;line-height:1.6;margin:0;font-weight:650}.video-heading span{font-size:13px;color:var(--muted)}.video-shell{overflow:hidden;border-radius:7px;background:#eef0f3;position:relative;line-height:0}.video-shell video{display:block;width:100%;height:100%;object-fit:contain;background:#eef0f3}.portrait{height:430px}.landscape{aspect-ratio:16/9}.tall-wide{height:500px}.video-shell video::cue{font-size:15px;background:rgba(15,20,28,.78);color:white}.caption{font-size:14px;color:var(--muted);line-height:1.7;margin:10px 0 0}.comparison-note{font-size:13px;color:var(--muted);margin:13px 0 28px}.perturbation{margin-top:24px}.contribution{display:grid;grid-template-columns:86px 1fr;gap:16px;padding:20px 0 0;margin-top:21px;border-top:1px solid var(--line)}.contribution h3{font-size:14px;padding-top:2px}.contribution ul{margin:0;padding-left:18px;font-size:15px;line-height:1.85}.contribution li+li{margin-top:4px}.tech{font-size:13px;color:var(--muted);margin:16px 0 0 102px}.tech span{color:#b2bac6;margin:0 10px}.manipulation:has(>figure:only-child){grid-template-columns:1fr}.manipulation .video-shell{height:420px;aspect-ratio:auto}.media-error{font-size:14px;line-height:1.7;color:#9b2939;background:#fff5f5;padding:10px;border-radius:5px;margin:8px 0}footer{padding:24px 0 35px;display:flex;justify-content:space-between;gap:16px;color:var(--muted);font-size:13px}
@media(min-width:1500px){.portrait{height:470px}}
@media(max-width:850px){.context{display:none}.title-detail{display:block;margin:3px 0 0;font-size:17px}h2{font-size:24px}.portrait{height:380px}}
@media(max-width:600px){.hero,main,footer{width:calc(100% - 36px)}.hero{padding:34px 0 30px}.hero .eyebrow{font-size:10px;letter-spacing:.12em}.subtitle{font-size:15px;margin:13px 0 20px}.subtitle span{margin:0 4px}nav{gap:7px}nav a{font-size:13px;padding:6px 9px}nav span{margin-left:5px}section{padding:30px 0}.section-heading{gap:11px}.intro{font-size:15px;margin:14px 0 20px}.comparison-toolbar{align-items:flex-start;flex-direction:column;gap:10px}.video-grid{grid-template-columns:1fr;gap:23px}.portrait{height:auto;aspect-ratio:9/16;max-height:560px}.tall-wide{height:auto;aspect-ratio:9/16;max-height:560px}.manipulation .video-shell{height:auto;aspect-ratio:16/9}.manipulation .video-shell.portrait{aspect-ratio:9/16}.contribution{grid-template-columns:1fr;gap:7px}.tech{margin-left:0}.tech span{margin:0 5px}footer{font-size:12px;flex-wrap:wrap}.video-heading span{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

.full-video-note{font-size:13px;color:var(--muted);margin:16px 0 -12px}

.portfolio-owner{font-size:15px;color:var(--muted);margin:0 0 14px}