/* wahanx — instrument-panel identity.
   Steel-blue neutrals, amber telltale, crimson fault. Grotesque headlines
   against a Charter serif body, monospace for every number. */

:root {
  --ground:#F6F7F9; --surface:#FFFFFF; --surface-2:#EDF0F4;
  --ink:#0F1620; --ink-2:#4A5563; --ink-3:#79838F;
  --line:#DDE3EA; --line-strong:#C3CCD6;
  --accent:#A85A00; --accent-bright:#E8890B; --signal:#A32B2B; --ok:#1F6B4A;
  --trace:#0F1620;
  --font-display:"Helvetica Neue",Helvetica,Arial,ui-sans-serif,system-ui,sans-serif;
  --font-body:Charter,"Bitstream Charter","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --font-mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --measure:66ch; --gutter:clamp(1.25rem,4vw,3.5rem);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#0B1017; --surface:#121922; --surface-2:#1A222D;
    --ink:#E9EDF2; --ink-2:#9BA7B5; --ink-3:#6E7B8A;
    --line:#222C38; --line-strong:#34414F;
    --accent:#F0A32E; --accent-bright:#F7B84D; --signal:#E86A6A; --ok:#4FBF8B;
    --trace:#C6D0DB;
  }
}
:root[data-theme="dark"]{
  --ground:#0B1017; --surface:#121922; --surface-2:#1A222D;
  --ink:#E9EDF2; --ink-2:#9BA7B5; --ink-3:#6E7B8A;
  --line:#222C38; --line-strong:#34414F;
  --accent:#F0A32E; --accent-bright:#F7B84D; --signal:#E86A6A; --ok:#4FBF8B;
  --trace:#C6D0DB;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--font-body);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}

.wrap{max-width:1120px;margin:0 auto;padding:0 var(--gutter)}
.prose{max-width:var(--measure)}
.skip{position:absolute;left:-9999px}
.skip:focus{left:1rem;top:1rem;z-index:100;background:var(--ink);color:var(--ground);padding:.5rem .9rem}

h1,h2,h3,.display{font-family:var(--font-display);font-weight:700;letter-spacing:-.022em;
  text-wrap:balance;line-height:1.08;margin:0}
h1{font-size:clamp(2.1rem,5vw,3.6rem)}
h2{font-size:clamp(1.55rem,3vw,2.2rem)}
h3{font-size:1.1rem;letter-spacing:-.012em}
p{margin:0}
a{color:var(--ink);text-decoration-color:var(--line-strong);text-underline-offset:3px}
a:hover{text-decoration-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent-bright);outline-offset:3px;border-radius:2px}

.eyebrow{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.15em;
  text-transform:uppercase;color:var(--ink-3)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.muted{color:var(--ink-2)}
.small{font-size:.86rem}
.ok{color:var(--ok)}
.dim{color:var(--ink-3)}
.thval{color:var(--accent);font-size:1rem}
.top-align{align-items:start}
.mt-s{margin-top:.5rem}
.mt-1{margin-top:1rem}
.mt-2{margin-top:1.25rem}
.mt-3{margin-top:1.5rem}
.mt-4{margin-top:1.75rem}

/* nav */
nav.top{position:sticky;top:0;z-index:40;border-bottom:1px solid var(--line);
  background:color-mix(in srgb,var(--ground) 88%,transparent);backdrop-filter:blur(10px)}
nav.top .wrap{display:flex;align-items:center;gap:1.5rem;height:56px;justify-content:space-between}
.brand{font-family:var(--font-display);font-weight:700;letter-spacing:-.03em;font-size:1.12rem;
  text-decoration:none;display:flex;align-items:center;gap:.5rem}
.brand::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--accent-bright);
  box-shadow:0 0 0 3px color-mix(in srgb,var(--accent-bright) 22%,transparent)}
.brand.foot::before{width:7px;height:7px}
.navlinks{display:flex;gap:1.3rem}
.navlinks a{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--ink-2);text-decoration:none}
.navlinks a:hover,.navlinks a[aria-current]{color:var(--ink)}
.navlinks a[aria-current]{box-shadow:inset 0 -2px 0 var(--accent-bright)}
.navtoggle{display:none;font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;
  letter-spacing:.08em;background:transparent;border:1px solid var(--line-strong);
  color:var(--ink-2);padding:.3rem .6rem;border-radius:2px;cursor:pointer}
@media (max-width:820px){
  .navtoggle{display:block}
  .navlinks{position:absolute;top:56px;left:0;right:0;background:var(--ground);
    border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:.5rem var(--gutter) 1rem;display:none}
  .navlinks.open{display:flex}
  .navlinks a{padding:.6rem 0;font-size:.85rem}
}

/* sections */
section{padding:clamp(3rem,7vw,5.5rem) 0;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:none}
.sechead{display:flex;flex-direction:column;gap:.85rem;margin-bottom:2.25rem}
.hero{padding-top:clamp(2.75rem,6vw,5rem)}
.hero h1{margin-bottom:1.25rem}
.lede{font-size:clamp(1.02rem,1.6vw,1.18rem);color:var(--ink-2);max-width:60ch}
.lede strong{color:var(--ink);font-weight:600}
.stack{display:grid;gap:1.4rem}

/* grids + cards */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:2rem}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
@media (max-width:820px){.grid2,.grid3{grid-template-columns:1fr;gap:1.5rem}}
.card{background:var(--surface);border:1px solid var(--line);padding:1.35rem;border-radius:3px;
  display:grid;gap:.6rem;align-content:start}
.card p{color:var(--ink-2);font-size:.95rem}
.card .tag{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase}
.tag.next{color:var(--accent)} .tag.planned{color:var(--ink-3)} .tag.blocked{color:var(--signal)}
.tag.live{color:var(--ok)}

/* tables */
.tablewrap{overflow-x:auto;border:1px solid var(--line);background:var(--surface)}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{padding:.6rem .9rem;text-align:left;border-bottom:1px solid var(--line)}
th{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-3);font-weight:400;background:var(--surface-2)}
td.n,th.n{text-align:right}
td.n{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
tbody tr:last-child td{border-bottom:none}
tr.hl td{background:color-mix(in srgb,var(--accent-bright) 10%,var(--surface))}

/* code */
pre{margin:0;padding:1rem 1.15rem;overflow-x:auto;background:var(--surface);
  border:1px solid var(--line);font-family:var(--font-mono);font-size:.82rem;line-height:1.6}
code{font-family:var(--font-mono);font-size:.88em}
p code,li code,td code{background:var(--surface-2);padding:.1em .35em;border-radius:2px}
.tok-c{color:var(--ink-3)} .tok-s{color:var(--ok)} .tok-k{color:var(--accent)}

/* lists */
ul.clean{margin:0;padding:0;list-style:none;display:grid;gap:.7rem}
ul.clean li{padding-left:1.15rem;position:relative;color:var(--ink-2)}
ul.clean li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;
  background:var(--accent-bright)}

/* steps */
.steps{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.step{background:var(--surface);padding:1.1rem 1.25rem;display:grid;
  grid-template-columns:auto 1fr;gap:1.1rem;align-items:baseline}
.step .formula{font-family:var(--font-mono);font-size:.85rem;color:var(--accent);white-space:nowrap}
.step h3{margin-bottom:.3rem}
.step p{color:var(--ink-2);font-size:.94rem}
@media (max-width:620px){.step{grid-template-columns:1fr;gap:.4rem}}

/* status */
.statusbox{border:1px solid var(--signal);background:color-mix(in srgb,var(--signal) 6%,var(--surface));
  padding:1.4rem;border-radius:3px}
.statusbox h3{color:var(--signal);margin-bottom:.85rem}

/* cta */
.cta{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-display);
  font-weight:600;font-size:.95rem;padding:.7rem 1.3rem;background:var(--ink);color:var(--ground);
  text-decoration:none;border-radius:2px;border:1px solid var(--ink)}
.cta:hover{background:transparent;color:var(--ink)}
.cta.ghost{background:transparent;color:var(--ink)}
.cta.ghost:hover{background:var(--ink);color:var(--ground)}
.ctarow{display:flex;gap:.75rem;flex-wrap:wrap}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line)}
@media (max-width:820px){.plans{grid-template-columns:1fr}}
.plan{background:var(--surface);padding:1.5rem;display:grid;gap:.9rem;align-content:start}
.plan .price{font-family:var(--font-mono);font-size:1.6rem;letter-spacing:-.03em}
.plan .price span{font-size:.8rem;color:var(--ink-3)}
.plan.feature{background:color-mix(in srgb,var(--accent-bright) 7%,var(--surface))}

/* instrument (demo) */
.instrument{background:var(--surface);border:1px solid var(--line);border-radius:3px;overflow:hidden}
.inst-head{display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:baseline;
  padding:1.1rem 1.35rem;border-bottom:1px solid var(--line);background:var(--surface-2)}
.inst-body{padding:1.35rem;display:grid;gap:1.5rem}
.readouts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line)}
@media (max-width:620px){.readouts{grid-template-columns:1fr}}
.readout{background:var(--surface);padding:1rem 1.1rem;display:flex;flex-direction:column;gap:.3rem}
.readout .label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3)}
.readout .value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(1.5rem,3.4vw,2.05rem);font-weight:500;letter-spacing:-.03em;line-height:1}
.readout .unit{font-family:var(--font-mono);font-size:.68rem;color:var(--ink-3)}
.readout.brake .value{color:var(--signal)}
.readout.accel .value{color:var(--accent)}
.sliderrow{display:grid;gap:.7rem}
.sliderlabels{display:flex;justify-content:space-between;align-items:baseline;gap:1rem}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:26px;
  background:transparent;cursor:grab;margin:0}
input[type=range]:active{cursor:grabbing}
input[type=range]::-webkit-slider-runnable-track{height:3px;background:var(--line-strong)}
input[type=range]::-moz-range-track{height:3px;background:var(--line-strong)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:15px;height:22px;
  background:var(--accent-bright);border:1px solid color-mix(in srgb,var(--accent) 70%,black);
  border-radius:2px;margin-top:-10px}
input[type=range]::-moz-range-thumb{width:15px;height:22px;background:var(--accent-bright);
  border:1px solid color-mix(in srgb,var(--accent) 70%,black);border-radius:2px}
canvas{width:100%;display:block}
.tracewrap{border:1px solid var(--line);background:var(--surface)}
.tracehead{display:flex;justify-content:space-between;align-items:center;gap:1rem;
  padding:.6rem .85rem;border-bottom:1px solid var(--line);font-family:var(--font-mono);
  font-size:.7rem;color:var(--ink-3);letter-spacing:.06em;text-transform:uppercase}
.segbtn{font-family:var(--font-mono);font-size:.72rem;padding:.15rem .5rem;background:transparent;
  border:1px solid var(--line-strong);color:var(--ink-2);cursor:pointer;border-radius:2px}
.segbtn:hover{border-color:var(--accent);color:var(--ink)}
.swingnote{font-family:var(--font-mono);font-size:.78rem;color:var(--ink-2);padding:.75rem .9rem;
  background:var(--surface-2);border-left:2px solid var(--accent-bright)}

/* footer */
footer{padding:3rem 0 3.5rem;border-top:1px solid var(--line)}
.footgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem}
@media (max-width:820px){.footgrid{grid-template-columns:1fr 1fr;gap:1.75rem}}
.footgrid a{display:block;font-size:.9rem;color:var(--ink-2);text-decoration:none;padding:.15rem 0}
.footgrid a:hover{color:var(--ink);text-decoration:underline}
.footlabel{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-3);display:block;margin-bottom:.5rem}
.legal{margin-top:2.5rem;padding-top:1.25rem;border-top:1px solid var(--line);max-width:70ch}

@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}