/* Unmark · Cupertino system: pure white ground, SF via the system stack, cobalt in the systemBlue slot. */
:root{
  --bg:#ffffff; --surface:#f5f5f7; --surface-2:#fbfbfd; --card:#ffffff;
  --ink:#1d1d1f; --ink-2:#6e6e73; --ink-3:#86868b;
  --hair:#d2d2d7; --hair-2:#e8e8ed; --card-edge:transparent;
  --tint:#2545d8; --tint-hi:#1c36ad; --tint-wash:#eef1fd; --on-tint:#ffffff;
  --fill:#1d1d1f; --on-fill:#ffffff; --quiet:#f5f5f7; --quiet-hi:#e8e8ed;
  --ring:rgba(37,69,216,.5); --red:#b4453a; --green:#00845c;
  --shadow:0 4px 18px rgba(0,0,0,.055),0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:0 12px 44px rgba(0,0,0,.075),0 1px 2px rgba(0,0,0,.04);
  --ui:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Helvetica,sans-serif;
  --ease:cubic-bezier(.2,.8,.2,1);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#000000; --surface:#101010; --surface-2:#0a0a0a; --card:#161617;
    --ink:#f5f5f7; --ink-2:#a1a1a6; --ink-3:#86868b;
    --hair:#3a3a3c; --hair-2:#1d1d1f; --card-edge:#2a2a2c;
    --tint:#7d97ff; --tint-hi:#a4b5ff; --tint-wash:#151a30; --on-tint:#08080a;
    --fill:#f5f5f7; --on-fill:#1d1d1f; --quiet:#1d1d1f; --quiet-hi:#2a2a2c;
    --ring:rgba(125,151,255,.55); --red:#ef7a6b; --green:#4fc78f;
    --shadow:0 4px 22px rgba(0,0,0,.6),0 1px 2px rgba(0,0,0,.5);
    --shadow-lg:0 12px 44px rgba(0,0,0,.7),0 1px 2px rgba(0,0,0,.5);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#000000; --surface:#101010; --surface-2:#0a0a0a; --card:#161617;
  --ink:#f5f5f7; --ink-2:#a1a1a6; --ink-3:#86868b;
  --hair:#3a3a3c; --hair-2:#1d1d1f; --card-edge:#2a2a2c;
  --tint:#7d97ff; --tint-hi:#a4b5ff; --tint-wash:#151a30; --on-tint:#08080a;
  --fill:#f5f5f7; --on-fill:#1d1d1f; --quiet:#1d1d1f; --quiet-hi:#2a2a2c;
  --ring:rgba(125,151,255,.55); --red:#ef7a6b; --green:#4fc78f;
  --shadow:0 4px 22px rgba(0,0,0,.6),0 1px 2px rgba(0,0,0,.5);
  --shadow-lg:0 12px 44px rgba(0,0,0,.7),0 1px 2px rgba(0,0,0,.5);
  color-scheme:dark;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);color:var(--ink);font-family:var(--ui);
  font-size:17px;line-height:1.47059;letter-spacing:-.022em;
  -webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column;
  transition:background-color .3s var(--ease),color .3s var(--ease);
}
main{flex:1}
[hidden]{display:none!important}
:focus-visible{outline:3px solid var(--ring);outline-offset:3px;border-radius:10px}
a{color:var(--tint);text-decoration:none}
a:hover{text-decoration:underline}
svg{stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
/* logo: the frame takes the ink colour, the lifted dot is cobalt, both follow the theme */
.mark .mark-frame{stroke:var(--ink);stroke-width:2.6;fill:none}
.mark .mark-dot{fill:var(--tint);stroke:none;transform-origin:23.6px 5.3px;transition:transform .5s var(--ease)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* type */
.d-l{font-size:clamp(36px,6vw,64px);line-height:1.0625;font-weight:600;letter-spacing:-.009em;text-wrap:balance}
.d-m{font-size:clamp(30px,4.4vw,40px);line-height:1.1;font-weight:600;text-wrap:balance}
.d-s{font-size:24px;line-height:1.1667;font-weight:600;letter-spacing:.009em;text-wrap:balance}
.lede{font-size:clamp(19px,2.2vw,21px);line-height:1.381;letter-spacing:.011em;color:var(--ink-2);text-wrap:balance}
.small{font-size:14px;line-height:1.4286;letter-spacing:-.016em;color:var(--ink-2)}
.eyebrow{font-size:17px;line-height:1.2;font-weight:600;letter-spacing:.011em;color:var(--tint)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font:inherit;font-size:17px;font-weight:400;line-height:1.17648;letter-spacing:-.022em;
  padding:11px 21px;border:0;border-radius:980px;cursor:pointer;text-decoration:none;white-space:nowrap;
  background:var(--tint);color:var(--on-tint);
  transition:background-color .2s var(--ease),transform .12s var(--ease),opacity .2s;
}
.btn:hover{background:var(--tint-hi);text-decoration:none}
.btn:active{transform:scale(.975)}
.btn svg{width:18px;height:18px}
.btn.quiet{background:var(--quiet);color:var(--ink)}
.btn.quiet:hover{background:var(--quiet-hi)}
.btn[disabled]{opacity:.45;pointer-events:none}
.text-btn{font:inherit;font-size:14px;color:var(--tint);background:none;border:0;cursor:pointer;padding:4px 2px;letter-spacing:-.016em}
.text-btn:hover{text-decoration:underline}

/* chrome */
.chrome{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 72%,transparent);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--hair-2)}
.chrome-in{max-width:1080px;margin:0 auto;padding:10px 22px;display:flex;align-items:center;gap:18px}
.brand{display:inline-flex;align-items:center;gap:9px;margin-inline-end:auto;direction:ltr;color:var(--ink);font-size:20px;font-weight:600;letter-spacing:-.03em}
.brand:hover{text-decoration:none}
.brand svg{width:28px;height:28px}
.brand:hover .mark-dot{transform:translate(1.5px,-1.5px) scale(1.12)}
.nav-link{font-size:14px;color:var(--ink-2);letter-spacing:-.016em}
.nav-link:hover{color:var(--ink);text-decoration:none}
.icon-btn{width:34px;height:34px;border-radius:50%;border:0;background:transparent;color:var(--ink-2);display:grid;place-items:center;cursor:pointer;transition:background-color .2s,color .2s}
.icon-btn:hover{background:var(--quiet);color:var(--ink)}
.icon-btn svg{width:18px;height:18px;grid-area:1/1;transition:transform .45s var(--ease),opacity .3s}
.lang{position:relative;display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 10px;border-radius:980px;color:var(--ink-2);font-size:13px;font-weight:500;letter-spacing:.02em;cursor:pointer;transition:background-color .2s,color .2s}
.lang:hover{background:var(--quiet);color:var(--ink)}
.lang:focus-within{outline:2px solid var(--tint);outline-offset:2px}
.lang svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.lang select{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;font-size:16px;border:0}
@media (max-width:420px){.chrome-in{gap:8px}.lang{padding:0 7px}}
/* hold the page briefly while a translation loads, so English never flashes */
.i18n-wait body{visibility:hidden}
/* video frames keep left-to-right geometry in right-to-left languages */
.frame,.compare{direction:ltr;scroll-margin:84px 0 24px}
.work-note{max-width:36ch;margin:6px auto 0;text-wrap:balance}
.compare.solo .after{clip-path:none}
.play{position:absolute;left:50%;top:50%;z-index:3;transform:translate(-50%,-50%);display:inline-flex;align-items:center;gap:8px;padding:11px 21px;border:0;border-radius:980px;background:rgba(0,0,0,.6);color:#fff;font:inherit;font-size:17px;cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.play svg{width:18px;height:18px;fill:#fff;stroke:none}
.compare.solo :is(#before,.tag,.handle,input[type=range]){display:none}
.i-sun{opacity:0;transform:rotate(-90deg) scale(.6)}
.is-dark .i-sun{opacity:1;transform:none}
.is-dark .i-moon{opacity:0;transform:rotate(90deg) scale(.6)}

.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* entrance: one short staggered rise */
.rise{animation:rise .75s var(--ease) both}
.rise-2{animation-delay:.07s}.rise-3{animation-delay:.14s}.rise-4{animation-delay:.22s}
@keyframes rise{from{opacity:0;transform:translateY(14px)}}

/* hero */
.hero{text-align:center;padding:76px 22px 40px}
.hero .d-l{margin-top:10px}
.hero .lede{max-width:36ch;margin:18px auto 0}

/* tool card */
.tool{max-width:824px}
.card{position:relative;background:var(--card);border:1px solid var(--card-edge);border-radius:28px;box-shadow:var(--shadow-lg);overflow:hidden}
.panel{padding:28px}

.drop{display:grid;justify-items:center;gap:14px;text-align:center;padding:54px 24px 48px;border-radius:20px;border:1.5px dashed var(--hair);background:var(--surface-2);cursor:pointer;transition:border-color .25s var(--ease),background-color .25s var(--ease),transform .3s var(--ease)}
.drop:hover{border-color:var(--tint)}
.drop.over{border-color:var(--tint);background:var(--tint-wash);transform:scale(1.012)}
.drop-icon{width:58px;height:58px;border-radius:18px;background:var(--tint-wash);color:var(--tint);display:grid;place-items:center;transition:transform .35s var(--ease)}
.drop-icon svg{width:26px;height:26px}
.drop:hover .drop-icon,.drop.over .drop-icon{transform:translateY(-3px)}
.limits{font-size:13px;color:var(--ink-3);letter-spacing:-.01em}
#file:focus-visible + .consent,.drop:focus-within{outline:none}
.consent{display:flex;gap:10px;align-items:flex-start;justify-content:center;margin:20px auto 0;max-width:46ch;font-size:14px;line-height:1.43;color:var(--ink-2);cursor:pointer}
.consent input{appearance:none;-webkit-appearance:none;width:20px;height:20px;border-radius:6px;border:1.5px solid var(--hair);background:var(--card);display:grid;place-items:center;flex:none;margin-top:0;cursor:pointer;transition:background-color .2s,border-color .2s}
.consent input:checked{background:var(--tint);border-color:var(--tint)}
.consent input:checked::after{content:"";width:9px;height:5px;border:2px solid var(--on-tint);border-top:0;border-right:0;transform:translateY(-1px) rotate(-45deg)}
.consent.nudge{animation:nudge .45s var(--ease)}
.consent.nudge input{border-color:var(--red)}
@keyframes nudge{20%{transform:translateX(-6px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(2px)}}
.hint{font-size:14px;color:var(--red);text-align:center;margin-top:10px}

/* busy + error */
.busy{padding:72px 28px;text-align:center;display:grid;gap:18px;justify-items:center}
.meter{width:100%;max-width:420px;height:6px;border-radius:3px;background:var(--hair-2);overflow:hidden}
.meter i{display:block;height:100%;width:0;background:var(--tint);border-radius:3px;transition:width .4s var(--ease)}
.meter.indeterminate i{width:32%;animation:slide 1.35s var(--ease) infinite}
@keyframes slide{from{transform:translateX(-110%)}to{transform:translateX(330%)}}
.status-line{font-size:14px;color:var(--ink-2);font-variant-numeric:tabular-nums;min-height:20px}
.err-icon{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:var(--red);background:color-mix(in srgb,var(--red) 12%,transparent)}
.err-icon svg{width:26px;height:26px}
.error-text{max-width:44ch;font-size:15px}

/* review */
.review{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:30px;align-items:center}
@media (max-width:760px){.review{grid-template-columns:1fr}}
/* width is derived from the height budget so the box always keeps the video's exact shape */
.frame{position:relative;width:min(100%,calc(min(540px,68vh) * var(--arn,0.5625)));aspect-ratio:var(--ar,9/16);margin:0 auto;border-radius:18px;overflow:hidden;background:#000;user-select:none;-webkit-user-select:none}
.frame img{display:block;width:100%;height:100%;object-fit:contain}
.overlay{position:absolute;inset:0;touch-action:none}
.overlay.marking{cursor:crosshair;box-shadow:inset 0 0 0 2px var(--tint)}
.mbox{position:absolute;border:2px solid #fff;border-radius:7px;background:rgba(37,69,216,.26);box-shadow:0 0 0 1px rgba(37,69,216,.9),0 6px 18px rgba(0,0,0,.25);animation:pop .55s var(--ease) both}
.mbox.later{background:transparent;border-style:dashed;opacity:.75;box-shadow:none}
.mbox.manual{background:rgba(37,69,216,.34)}
.mbox.draft{animation:none;opacity:.8}
.scan{position:absolute;left:0;right:0;top:0;height:2px;background:#fff;box-shadow:0 0 16px 5px rgba(125,151,255,.55);opacity:0;animation:scan 1.05s var(--ease) both;pointer-events:none}
@keyframes scan{0%{top:0;opacity:0}12%{opacity:1}100%{top:100%;opacity:0}}
@keyframes pop{from{opacity:0;transform:scale(.82)}}
.details{display:grid;gap:18px;align-content:center}
.details .small{margin-top:6px}
.spots{list-style:none;display:grid;gap:8px}
.spots li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--ink-2);font-variant-numeric:tabular-nums;animation:rise .5s var(--ease) both}
.spots li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--tint);flex:none}
.switch-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 16px;border-radius:14px;background:var(--surface)}
.switch-row strong{display:block;font-weight:500;font-size:16px}
.switch-row .small{margin:0}
.sw{width:51px;height:31px;border-radius:980px;background:var(--hair);border:0;padding:2px;cursor:pointer;flex:none;transition:background-color .25s var(--ease)}
.sw[aria-checked="true"]{background:var(--green)}
.sw i{display:block;width:27px;height:27px;border-radius:50%;background:#fff;box-shadow:0 2px 5px rgba(0,0,0,.22);transition:transform .28s var(--ease)}
.sw[aria-checked="true"] i{transform:translateX(20px)}
.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.actions.center{justify-content:center}
.actions.minor{gap:18px;margin-top:-6px}
@media (max-width:760px){.details{text-align:center}.actions{justify-content:center}.spots li{justify-content:center}}

/* working */
.working{padding:64px 28px;text-align:center;display:grid;gap:14px;justify-items:center}
.big-pct{font-size:clamp(52px,9vw,72px);line-height:1;font-weight:600;letter-spacing:-.02em;font-variant-numeric:tabular-nums}

/* done */
.compare{position:relative;width:min(100%,calc(min(560px,66vh) * var(--arn,0.5625)));aspect-ratio:var(--ar,9/16);margin:0 auto;border-radius:18px;overflow:hidden;background:#000;--split:50%;touch-action:pan-y}
.compare video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.compare .after{clip-path:inset(0 0 0 var(--split))}
.handle{position:absolute;top:0;bottom:0;left:var(--split);width:2px;margin-left:-1px;background:#fff;pointer-events:none;box-shadow:0 0 12px rgba(0,0,0,.35)}
.handle::after{content:"";position:absolute;top:50%;left:50%;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;background:#fff;box-shadow:0 4px 14px rgba(0,0,0,.3)}
.handle::before{content:"";position:absolute;top:50%;left:50%;z-index:1;width:12px;height:8px;margin:-4px 0 0 -6px;border-left:2px solid var(--ink-2);border-right:2px solid var(--ink-2)}
.compare input[type=range]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.compare.intro{animation:none}
.tag{position:absolute;top:12px;font-size:12px;font-weight:600;letter-spacing:.01em;padding:4px 10px;border-radius:980px;background:rgba(0,0,0,.5);color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);pointer-events:none}
.tag.l{left:12px}.tag.r{right:12px}
.done-foot{text-align:center;display:grid;gap:4px;margin-top:22px}
.done-foot .actions{margin-top:16px}

/* sections */
.section{padding-top:96px}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:840px){.tiles{grid-template-columns:1fr}}
.tile{background:var(--card);border:1px solid var(--card-edge);border-radius:28px;box-shadow:var(--shadow);padding:36px 28px 32px;text-align:center;display:grid;gap:10px;justify-items:center;align-content:start}
.tile .small{max-width:30ch}
.tile-icon{width:46px;height:46px;border-radius:14px;background:var(--tint-wash);color:var(--tint);display:grid;place-items:center;margin-bottom:4px}
.tile-icon svg{width:22px;height:22px}
.band{background:var(--surface);border-radius:28px;padding:60px clamp(22px,4vw,44px);text-align:center}
.steps{list-style:none;counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:880px;margin:40px auto 0}
@media (max-width:760px){.steps{grid-template-columns:1fr}}
.steps li{counter-increment:step;display:grid;gap:6px;justify-items:center}
.steps li::before{content:counter(step);width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--card);color:var(--tint);font-weight:600;font-size:15px;box-shadow:var(--shadow);margin-bottom:6px}
.steps strong{font-weight:600}
.steps .small{max-width:28ch}

/* footer */
.foot{margin-top:96px;border-top:1px solid var(--hair-2)}
.foot-in{max-width:1080px;margin:0 auto;padding:26px 22px 34px;display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3)}
.foot-nav{display:flex;gap:20px}
.foot-nav a{color:var(--ink-2)}

/* about */
.article{max-width:700px;margin:0 auto;padding:76px 22px 0}
.article-head{text-align:center;margin-bottom:44px}
.article-head .d-l{margin-top:10px}
.article-head .lede{margin:18px auto 0;max-width:34ch}
.article section{margin-top:40px;scroll-margin-top:80px}
.article section h2{margin-bottom:12px}
.article p{max-width:65ch;font-size:18px;line-height:1.55;letter-spacing:-.018em}
.article p + p{margin-top:14px}
.credit{margin-top:52px;padding:20px 24px;border-radius:20px;background:var(--surface);font-size:14px;line-height:1.5;color:var(--ink-2)}
.article-cta{text-align:center;margin-top:44px}

@media (max-width:560px){
  .hero{padding-top:52px}
  .panel{padding:18px}
  .drop{padding:40px 18px 36px}
  .busy,.working{padding:52px 18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .meter.indeterminate i{animation:none;width:100%;opacity:.4}
}