/* Screen resolution and browser inspector SCR-23. Instrument Sheet chassis, accent #38668F (steel). */
:root{
  --paper:#EDE9E2;
  --ink:#1E1D1B;
  --panel:#DEDACF;
  --line:#B7B0A2;
  --chassis:#2A2924;
  --accent:#38668F;
  --on-accent:#EDE9E2;          /* paper on steel is 5:1, so type on the accent is paper */
  --on-accent-fill:#38668F;     /* the inverted primary button inside the steel */
  --font-ui:"Familjen Grotesk",system-ui,sans-serif;
  --font-spec:"Martian Mono",ui-monospace,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
}
@media (prefers-color-scheme:dark){
  :root{--paper:#1E1D1B;--ink:#EDE9E2;--panel:#2A2924;--line:#4A473F;--chassis:#111;--on-accent:#EDE9E2;--on-accent-fill:#38668F}
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-ui);font-size:1rem;line-height:1.55;overflow-x:hidden}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
button{font:inherit;color:inherit}
h1,h2,h3,p,dl,dd,dt,ol,ul,figure,pre,fieldset,figcaption{margin:0}
[hidden]{display:none!important}
code{font-family:var(--font-spec);font-size:.8em}

/* label strip */
.strip{max-width:1120px;margin:0 auto;padding:18px 32px 0;display:flex;justify-content:space-between;align-items:baseline;font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;border-bottom:1px solid var(--line)}
.strip-maker{text-decoration:none;padding-bottom:12px}
.strip-maker:hover{text-decoration:underline;text-underline-offset:3px}
.strip-code{padding-bottom:12px}

/* page */
.wrap{max-width:1120px;margin:0 auto;padding:40px 32px 0}
.title{font-size:4.25rem;font-weight:600;line-height:1;letter-spacing:-.01em;margin-bottom:16px;max-width:14ch}
.lede{font-size:1.125rem;max-width:56ch;margin-bottom:28px}
.subhead{font-size:1.375rem;font-weight:500;line-height:1.25;margin-bottom:10px}
.section-head{font-size:2rem;font-weight:600;line-height:1.1;margin:40px 0 14px}

/* the steel slab: the one accent shape, and the hero */
.hero{position:relative;background:var(--accent);color:var(--on-accent);padding:32px 40px 32px}
.hero::before,.hero::after,.hero>.ticks::before,.hero>.ticks::after{content:"";position:absolute;width:14px;height:14px;border:0 solid var(--paper);pointer-events:none;z-index:2}
.hero::before{top:0;left:0;border-top-width:1px;border-left-width:1px}
.hero::after{top:0;right:0;border-top-width:1px;border-right-width:1px}
.hero>.ticks::before{bottom:0;left:0;border-bottom-width:1px;border-left-width:1px}
.hero>.ticks::after{bottom:0;right:0;border-bottom-width:1px;border-right-width:1px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px 48px;align-items:start}
.hero-main{min-width:0}
.hero-label{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;margin-bottom:6px}

/* the viewport, enormous, rolling like an odometer */
.big{position:relative;display:flex;align-items:baseline;font-weight:600;font-size:7rem;line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums;margin:0 0 22px;white-space:nowrap}
.big-x{font-weight:400;font-size:.55em;margin:0 .08em;opacity:.8;align-self:center}
.od{display:inline-flex}
.od-d{display:inline-block;height:1em;overflow:hidden;width:.58em;position:relative}
.od-col{display:block;transform:translateY(0);transition:transform .38s var(--ease)}
.od-col>i{display:block;height:1em;font-style:normal;text-align:center}
.od-d.is-new .od-col{transition:none}

/* hero facts */
.hero-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 32px;max-width:560px;margin-bottom:26px}
.hero-facts dt{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;margin-bottom:2px}
.hero-facts dd{font-size:1.375rem;font-weight:500;line-height:1.2;font-variant-numeric:tabular-nums}

/* the monitor: screen outline, window filled, to scale */
.monitor{align-self:center;color:var(--on-accent)}
.monitor svg{display:block;max-width:100%;height:auto;overflow:visible}
#mon-txt{transition:x .38s var(--ease),y .38s var(--ease)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
#mon-vp{transition:x .38s var(--ease),y .38s var(--ease),width .38s var(--ease),height .38s var(--ease)}
#mon-screen,#mon-avail{transition:width .38s var(--ease),height .38s var(--ease),x .38s var(--ease),y .38s var(--ease)}
.monitor figcaption{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;margin-top:10px}

/* buttons */
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.btn{position:relative;display:inline-block;padding:12px 18px;border:1px solid var(--ink);background:var(--paper);color:var(--ink);font-weight:500;line-height:1.2;cursor:pointer;border-radius:0;text-decoration:none}
.btn:hover{background:var(--panel)}
.btn:disabled{opacity:.45;cursor:default}
.btn.is-done{background:var(--ink);color:var(--paper)}
/* inside the steel everything inverts: the primary is paper-filled, the secondary is paper-outlined */
.btn-primary{background:var(--on-accent);border-color:var(--on-accent);color:var(--on-accent-fill)}
.btn-primary:hover{background:var(--on-accent)}
.btn-primary .ticks{position:absolute;inset:0;pointer-events:none}
.btn-primary::before,.btn-primary::after,.btn-primary .ticks::before,.btn-primary .ticks::after{content:"";position:absolute;width:14px;height:14px;border:0 solid var(--on-accent);opacity:0;pointer-events:none}
.btn-primary::before{top:-6px;left:-6px;border-top-width:1px;border-left-width:1px}
.btn-primary::after{top:-6px;right:-6px;border-top-width:1px;border-right-width:1px}
.btn-primary .ticks::before{bottom:-6px;left:-6px;border-bottom-width:1px;border-left-width:1px}
.btn-primary .ticks::after{bottom:-6px;right:-6px;border-bottom-width:1px;border-right-width:1px}
.btn-primary:hover::before,.btn-primary:hover::after,.btn-primary:hover .ticks::before,.btn-primary:hover .ticks::after,
.btn-primary:focus-visible::before,.btn-primary:focus-visible::after,.btn-primary:focus-visible .ticks::before,.btn-primary:focus-visible .ticks::after{opacity:1}
.btn-primary:focus-visible{outline-color:var(--on-accent);outline-offset:4px}
.btn-primary.is-done{background:var(--on-accent-fill);color:var(--on-accent);border-color:var(--on-accent)}
.btn-inv{background:transparent;border-color:var(--on-accent);color:var(--on-accent)}
.btn-inv:hover{background:rgba(237,233,226,.12)}
.btn-inv:focus-visible{outline-color:var(--on-accent)}
.btn-inv.is-done{background:var(--on-accent);color:var(--on-accent-fill)}
.hint{font-size:.9375rem;opacity:.8;margin-left:6px}

/* reading line */
.reading{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;white-space:pre;margin:12px 0 0;overflow-x:auto}

/* jump strip */
.jump{display:flex;flex-wrap:wrap;gap:0;margin-top:28px;border:1px solid var(--line);border-right:0}
.jump a{padding:8px 14px;border-right:1px solid var(--line);text-decoration:none;font-weight:500;font-size:.9375rem;flex:1 0 auto;text-align:center}
.jump a:hover{background:var(--panel)}

/* the spec sheet */
.sheet{margin-top:8px}
.sec{position:relative;border:1px solid var(--line);border-top:0;background:var(--panel);padding:22px 32px 8px;scroll-margin-top:16px}
.sec:first-child{border-top:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px 20px;margin-bottom:12px}
.sec-head h2{font-size:1.75rem;font-weight:600;line-height:1.1}
.sec-head .sec-code{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;margin-left:14px}
.sec-head .btn{padding:6px 12px;font-size:.9375rem}
.sec-answer{max-width:68ch;margin-bottom:16px;font-size:1.0625rem}
.sec-answer b{font-weight:600}
.rows{display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:200px minmax(0,1fr) minmax(0,1.2fr);gap:4px 24px;padding:9px 0;border-bottom:1px solid var(--line);align-items:baseline}
.row-k{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;padding-top:4px}
.row-v{font-weight:500;font-size:1.0625rem;overflow-wrap:anywhere;font-variant-numeric:tabular-nums;min-width:0}
.row-v.is-spec{font-family:var(--font-spec);font-size:.8125rem;font-weight:500}
.row-v.is-yes::before,.row-v.is-no::before,.row-v.is-maybe::before{content:"";display:inline-block;width:12px;height:12px;margin-right:9px;vertical-align:-1px;border:1px solid var(--ink)}
.row-v.is-yes::before{background:var(--accent);border-color:var(--accent)}
.row-v.is-maybe::before{background:linear-gradient(90deg,var(--accent) 50%,transparent 50%)}
.row-n{font-size:.9375rem;opacity:.85;min-width:0}
.row.is-pending .row-v{opacity:.5}
.sec-foot{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:14px 0 12px}
.sec-foot .btn{padding:8px 14px;font-size:.9375rem}
.sec-foot .hint{margin:0;opacity:.8;font-size:.9375rem}

/* notes */
.notes{display:grid;grid-template-columns:repeat(12,minmax(0,1fr))}
.notes>*{grid-column:span 8}
.notes p{max-width:68ch;margin-bottom:14px}

.foot{max-width:1120px;margin:0 auto;padding:20px 32px 40px;font-size:.875rem;opacity:.8}
.foot p{max-width:70ch}

/* phones and narrow screens */
@media (max-width:900px){
  .notes>*{grid-column:span 12}
  .hero-grid{grid-template-columns:1fr}
  .monitor{max-width:360px}
  .big{font-size:5rem}
  .row{grid-template-columns:150px minmax(0,1fr)}
  .row-n{grid-column:2}
}
@media (max-width:640px){
  .strip{padding:14px 16px 0}
  .wrap{padding:28px 16px 0}
  .title{font-size:2.75rem}
  .lede{font-size:1rem}
  .hero{padding:22px 18px 22px}
  .big{font-size:3.25rem;margin-bottom:16px}
  .hero-facts{grid-template-columns:1fr;gap:8px}
  .hero-facts dd{font-size:1.125rem}
  .hint{display:none}
  .monitor svg{height:150px;width:auto}
  .reading{white-space:pre-wrap}
  .jump a{padding:7px 10px;font-size:.875rem}
  .sec{padding:18px 16px 6px}
  .sec-head h2{font-size:1.375rem}
  .sec-head .sec-code{display:none}
  .row{grid-template-columns:1fr;gap:2px}
  .row-n{grid-column:1}
  .section-head{font-size:1.625rem}
  .foot{padding:16px 16px 32px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}