:root{color-scheme:light;--paper:#f4f3ef;--ink:#171717;--muted:#575754;--line:#c6c5bf;--red:#d8443b;--green:#20834d;--blue:#2864ad;--yellow:#e5bd22;font-family:Arial,Helvetica,sans-serif;background:var(--paper);color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}button,a,summary{touch-action:manipulation}button:focus-visible,a:focus-visible,summary:focus-visible,pre:focus-visible{outline:3px solid var(--blue);outline-offset:5px}.skip{position:fixed;top:-80px;left:16px;padding:14px;background:var(--ink);color:white;z-index:4}.skip:focus{top:16px}
.masthead,main,footer{width:min(1120px,calc(100% - 96px));margin-inline:auto}.masthead{display:flex;justify-content:space-between;align-items:center;padding-block:30px;border-bottom:1px solid var(--ink)}.wordmark{display:flex;align-items:center;gap:18px;font-size:20px;font-weight:700;letter-spacing:-.035em;text-decoration:none}.dots{display:inline-flex;gap:5px}.dots i{width:8px;height:8px;border-radius:50%;background:var(--red)}.dots i:nth-child(2){background:var(--green)}.dots i:nth-child(3){background:var(--blue)}.dots i:nth-child(4){background:var(--yellow)}.edition,.eyebrow,.small-label,.stage-number{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:11px;letter-spacing:.07em}.edition{color:var(--muted)}
.intro{padding-block:65px 46px}.eyebrow{margin:0 0 14px}.intro h1{font-size:clamp(58px,8.5vw,106px);line-height:.95;letter-spacing:-.075em;font-weight:500;margin:0 0 31px}.lede{max-width:720px;font-size:23px;line-height:1.4;letter-spacing:-.025em;margin:0 0 24px}.boundary{max-width:720px;line-height:1.6;font-size:15px;color:var(--muted)}.boundary strong{font-weight:600;color:var(--ink)}
.experiment{border:1px solid var(--ink);background:#fff}.section-top{display:flex;align-items:baseline;justify-content:space-between;padding:23px 28px;border-bottom:1px solid var(--line);gap:15px}.section-top h2{font-size:22px;letter-spacing:-.04em;font-weight:500;margin:0}.small-label{color:var(--muted)}.stages{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line)}.stages li{padding:24px 28px 26px;position:relative}.stages li+li{border-left:1px solid var(--line)}.stage-number{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border:1px solid var(--ink);border-radius:50%;margin-bottom:24px;letter-spacing:0}.stages h3{font-weight:500;font-size:18px;letter-spacing:-.04em;margin:0 0 8px}.stages p{font-size:12px;color:var(--muted);margin:0;line-height:1.5}
.test-note{padding:0 28px;max-width:840px;margin:25px 0 20px;font-size:14px;line-height:1.6;color:var(--muted)}.test-note strong{color:var(--ink);font-weight:600}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.9em;overflow-wrap:anywhere}.test-buttons{display:flex;flex-wrap:wrap;gap:10px;padding:0 28px}.test-buttons button{min-height:45px;border:1px solid var(--ink);border-radius:0;color:var(--ink);background:white;padding:11px 14px;font:inherit;font-size:13px;cursor:pointer}.test-buttons button:first-child{background:var(--ink);color:white}.test-buttons button:first-child span{margin-left:10px}.test-buttons button:hover{background:#ecebe6}.test-buttons button:first-child:hover{background:#3b3b38}.test-buttons button[data-selected=true]{box-shadow:inset 0 -3px 0 var(--blue)}.test-buttons button:disabled{opacity:.55;cursor:default}.browser-note{padding:0 28px;font-size:12px;line-height:1.6;color:var(--muted);margin:14px 0 25px}
.result{margin:0 28px 28px;padding:24px;background:var(--paper);border:1px solid var(--line)}.result-heading{display:flex;gap:16px;align-items:center}.result-heading .eyebrow{font-size:10px;margin:0 0 7px;color:var(--muted)}.result-mark{width:39px;height:39px;display:inline-flex;align-items:center;justify-content:center;flex:none;border:1px solid var(--ink);font:23px ui-monospace,SFMono-Regular,Consolas,monospace}.result h3{font-size:24px;font-weight:500;letter-spacing:-.045em;margin:0}.result>p{font-size:14px;line-height:1.6;max-width:760px;margin:17px 0 0}.result[data-state=verified] .result-mark{border-color:var(--green);color:var(--green)}.result[data-state=rejected] .result-mark{border-color:var(--red);color:var(--red)}.result[data-state=error] .result-mark{border-color:var(--red);color:var(--red)}.findings{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:23px 0 0;border-top:1px solid var(--line);padding-top:18px}.findings[hidden]{display:none}.findings dt{font-size:10px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.02em;color:var(--muted);margin-bottom:7px}.findings dd{margin:0;font-size:12px;line-height:1.5;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.film-card{display:flex;align-items:center;gap:22px;margin:0 28px;padding:24px 0;border-top:1px solid var(--ink);text-decoration:none}.film-letter{display:inline-flex;align-items:center;justify-content:center;flex:none;width:84px;height:84px;background:var(--ink);color:white;font-size:76px;line-height:1;font-weight:600;letter-spacing:-.08em;padding-right:5px}.film-card .eyebrow{display:block;margin-bottom:9px;font-size:10px;color:var(--muted)}.film-card strong{display:block;font-weight:500;font-size:28px;letter-spacing:-.045em;margin-bottom:8px}.film-description{display:block;font-size:13px;line-height:1.5;color:var(--muted)}.card-arrow{margin-left:auto;font-size:28px}.film-card:hover strong{text-decoration:underline;text-underline-offset:.15em}.under-card{margin:0;padding:0 28px 26px;font-size:12px;line-height:1.6;color:var(--muted);max-width:850px}
.notes{padding:46px 0 54px}.notes h2{font-weight:500;letter-spacing:-.045em;font-size:29px;margin:0 0 19px}.note-columns{display:grid;grid-template-columns:1fr 1fr;gap:44px}.note-columns p{font-size:15px;line-height:1.6;margin:0;color:var(--muted)}.technical{margin-top:35px;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.technical summary{cursor:pointer;font-size:16px;padding:20px 2px;list-style-position:inside}.technical summary span{font-size:12px;color:var(--muted);margin-left:12px}.technical-body{max-width:850px;padding:0 2px 28px}.technical h3{font-weight:600;font-size:15px;margin:24px 0 11px}.technical p{font-size:14px;line-height:1.7;color:var(--muted);margin:0 0 16px}.technical pre{border:1px solid var(--line);background:white;max-width:100%;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;padding:18px;font:11px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;tab-size:2}.privacy-note{border-top:1px solid var(--line);padding-top:20px!important;margin-top:24px!important}
footer{border-top:1px solid var(--ink);padding:25px 0 35px;display:flex;flex-wrap:wrap;align-items:center;gap:22px;font-size:12px}footer nav{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}footer p{width:100%;font-size:11px;color:var(--muted);margin:0}.result[aria-busy=true] .result-mark{color:var(--blue)}
@media(max-width:760px){.masthead,main,footer{width:calc(100% - 40px)}.masthead{padding-block:22px}.wordmark{font-size:17px;gap:12px}.edition{font-size:9px}.intro{padding-block:45px 30px}.intro h1{font-size:clamp(48px,12vw,80px);letter-spacing:-.065em;margin-bottom:24px}.lede{font-size:19px}.boundary{font-size:13px}.section-top{padding:21px 20px;align-items:start;flex-direction:column;gap:8px}.stages{grid-template-columns:1fr 1fr}.stages li{padding:20px}.stages li:nth-child(3){border-left:0;border-top:1px solid var(--line)}.stages li:nth-child(4){border-top:1px solid var(--line)}.stage-number{margin-bottom:18px}.test-note,.test-buttons,.browser-note{padding-inline:20px}.test-buttons{display:grid;grid-template-columns:1fr 1fr}.test-buttons button{font-size:12px;line-height:1.4;min-height:48px;text-align:left;padding:10px}.test-buttons button:first-child{grid-column:1/-1;text-align:center}.test-buttons button:first-child span{float:right}.result{margin:0 20px 22px;padding:18px}.result h3{font-size:22px}.result>p{font-size:13px}.findings{grid-template-columns:1fr 1fr;gap:18px 12px}.film-card{margin-inline:20px;gap:15px;align-items:start}.film-letter{width:54px;height:62px;font-size:54px}.film-card .eyebrow{font-size:9px;line-height:1.5;margin-bottom:7px}.film-card strong{font-size:23px}.film-description{font-size:12px}.card-arrow{font-size:22px}.under-card{padding-inline:20px}.notes{padding-block:35px}.notes h2{font-size:27px}.note-columns{grid-template-columns:1fr;gap:18px}.note-columns p{font-size:14px}.technical summary{font-size:15px;line-height:1.7}.technical summary span{display:block;margin:3px 0 0 19px;font-size:11px}.technical pre{padding:12px;font-size:10px}footer{gap:20px}footer nav{margin-left:0;font-size:11px;gap:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}