/* grokapikey.com - oscilloscope test bench */
:root{--bg:#110a1a;--pan:#1b1128;--pan2:#24163a;--glass:#0a0610;--tx:#ece4f5;--body:#ddd2ea;--mut:#b5a6c7;--vi:#dd8cff;--vi2:#efc2ff;--ink:#1a0826;--mint:#7df0d0;--line:rgba(221,140,255,.2);--line2:rgba(221,140,255,.38);--face:132px;--strip:60px;--disp:"Tomorrow","Arial Narrow",system-ui,sans-serif;--sans:"Mona Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--mono:"Lilex",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace}
.page-home{--face:236px}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);background-image:radial-gradient(900px 420px at 70% -80px,rgba(190,90,255,.16),transparent 70%),linear-gradient(rgba(221,140,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(221,140,255,.055) 1px,transparent 1px);background-size:auto,48px 48px,48px 48px;color:var(--body);font:400 1.0625rem/1.65 var(--sans);overflow-x:clip}
[hidden]{display:none!important}
img,svg{max-width:100%}
a{color:var(--vi);text-underline-offset:.18em}
a:hover{color:var(--vi2)}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:4px}
h1,h2,h3,.ct{font-family:var(--disp);color:var(--tx);line-height:1.12;margin:0;overflow-wrap:break-word}
h1{font-weight:600;font-size:clamp(2.05rem,4.5vw,3.7rem);line-height:1.03;letter-spacing:-.012em;text-wrap:balance}
p{margin:0}
.skip{position:absolute;left:-999px;top:8px;z-index:99;background:var(--vi);color:var(--ink);padding:12px 18px;border-radius:6px;font-weight:600}
.skip:focus{left:8px}
.led{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px var(--mint);flex:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;border:1px solid var(--vi);background:var(--vi);color:var(--ink);font:600 .92rem/1.1 var(--disp);letter-spacing:.045em;text-transform:uppercase;text-decoration:none;text-align:center;cursor:pointer;transition:background .15s,box-shadow .15s,transform .1s}
.btn:hover{background:var(--vi2);color:var(--ink);box-shadow:0 0 24px rgba(221,140,255,.5)}
.btn:active{transform:translateY(1px)}
.btn.big{min-height:54px;padding:0 30px;font-size:1rem}
.btn.ghost{background:transparent;color:var(--vi)}
.btn.ghost:hover{background:rgba(221,140,255,.12);color:var(--vi2);box-shadow:none}
.btn.sm{min-height:44px;padding:0 14px;font-size:.8rem}
.acts{display:flex;flex-wrap:wrap;gap:12px}

/* header: oversized faceplate that collapses to the control strip */
.hd{position:sticky;top:calc(-1*var(--face));z-index:50}
.face{position:relative;height:var(--face);overflow:hidden;background:linear-gradient(180deg,#1d1030,#150c22);border-bottom:1px solid var(--line)}
.face-tr{position:absolute;inset:0;width:100%;height:100%;opacity:.42}
.face-tr path,.scr path,.blip path,.flat path{fill:none;vector-effect:non-scaling-stroke}
.face-tr .clip{stroke:var(--mint);stroke-width:1;opacity:.5}
.face-tr .sig{stroke:var(--vi);stroke-width:1.5}
.face-in{position:relative;max-width:1180px;height:100%;margin:0 auto;padding:0 24px 16px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-content:end;gap:8px 24px}
.word{grid-column:1/-1;font:700 clamp(1.9rem,5vw,3.5rem)/.92 var(--disp);letter-spacing:-.02em;color:var(--tx);text-decoration:none;white-space:nowrap;padding-bottom:.14em;text-shadow:0 0 28px rgba(221,140,255,.45),0 2px 0 #110a1a}
.page-home .word{font-size:clamp(2rem,9.6vw,8.2rem)}
.word:hover{color:#fff}
.tag,.ep{font:400 .76rem/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--mut)}
.ep{display:flex;align-items:center;gap:10px;text-transform:none;letter-spacing:.02em}
.ep b{font-weight:500;color:var(--ink);background:var(--mint);padding:1px 8px;border-radius:3px}
.strip{height:var(--strip);background:rgba(17,10,26,.9);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line2);box-shadow:0 10px 30px -18px #000}
.strip-in{position:relative;max-width:1180px;height:100%;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:14px}
.logo{display:inline-flex;align-items:center;gap:10px;min-height:44px;color:var(--tx);text-decoration:none;font:600 1.02rem/1 var(--disp);letter-spacing:-.005em}
.mk{width:30px;height:30px;flex:none}
.mk rect{fill:var(--glass);stroke:var(--line2)}
.mk path{fill:none;stroke-linecap:round;stroke-linejoin:round}
.mk-c{stroke:var(--mint);stroke-width:1.3;opacity:.6}
.mk-s{stroke:var(--vi);stroke-width:2.3}
.nav{display:flex;align-items:center;margin-left:auto}
.nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 15px;color:var(--body);text-decoration:none;font:500 .84rem/1 var(--disp);letter-spacing:.09em;text-transform:uppercase;position:relative}
.nav a:hover{color:var(--tx)}
.nav a[aria-current]{color:var(--vi)}
.nav a[aria-current]::after{content:"";position:absolute;left:15px;right:15px;bottom:5px;height:2px;background:var(--vi);box-shadow:0 0 10px var(--vi)}
.btn.key{min-height:44px;padding:0 18px;font-size:.84rem}
.burger{display:none;width:46px;height:46px;flex:none;background:var(--pan2);border:1px solid var(--line2);border-radius:8px;cursor:pointer;align-items:center;justify-content:center}
.burger i{display:block;width:20px;height:2px;background:var(--tx);box-shadow:0 -6px 0 var(--tx),0 6px 0 var(--tx)}
@supports (animation-timeline:scroll()){@media (prefers-reduced-motion:no-preference){.strip .logo span{animation:lg linear both;animation-timeline:scroll(root);animation-range:0 var(--face)}}}
@keyframes lg{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:none}}

/* bench canvas + offset modules */
.bench{max-width:1180px;margin:0 auto;padding:44px 24px 96px}
.bench>*+*{margin-top:60px}
.bench>section,.bench>article{min-width:0}
.mod{width:90%}
.bench>.sheet{width:min(90%,860px)}
.bench>section:nth-of-type(even):not(.trig):not(.hero):not(.keyhero){margin-left:auto}
.mod{position:relative;background:var(--pan);border:1px solid var(--line);border-radius:4px 14px 14px 14px;box-shadow:0 24px 50px -30px #000}
.mod-h{display:flex;align-items:center;gap:12px;padding:13px 22px;background:var(--pan2);border-bottom:1px solid var(--line);border-radius:3px 13px 0 0}
.mod-h h2{font-weight:600;font-size:1.16rem;letter-spacing:.06em;text-transform:uppercase;min-width:0}
.no,.ix{font:500 .78rem/1 var(--mono);color:var(--vi);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.blip{flex:0 1 120px;min-width:0;width:120px;height:20px;margin-left:auto}
.blip path{stroke:var(--vi);stroke-width:1.5}
.mod-b{padding:28px}
.knob{position:relative;flex:none;width:30px;height:30px;border-radius:50%;background:radial-gradient(circle,#34214d 0 46%,#120a1c 48% 56%,transparent 58%),repeating-conic-gradient(from -1.5deg,var(--line2) 0 3deg,transparent 3deg 30deg)}
.knob::after{content:"";position:absolute;inset:0;border-radius:50%;background:linear-gradient(var(--vi),var(--vi)) no-repeat 50% 22%/2px 26%;transform:rotate(var(--r,0deg))}
.knob.big{display:block;width:56px;height:56px;background:radial-gradient(circle,#3a2556 0 44%,#120a1c 46% 54%,transparent 56%),repeating-conic-gradient(from -1deg,var(--line2) 0 2deg,transparent 2deg 22.5deg)}
.knob.big::after{background-size:3px 26%;filter:drop-shadow(0 0 4px var(--vi))}

/* cells */
.cells{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cell{background:var(--pan);padding:22px 22px 24px;min-width:0}
.cell .ix{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.cell .ix::before{content:"";width:18px;height:2px;background:var(--vi)}
.ct{font-weight:600;font-size:1.1rem;letter-spacing:.005em}
.cell p,.steps p{margin-top:8px;font-size:.97rem;line-height:1.58;color:var(--mut)}
.ex .cell p{font-family:var(--mono);font-size:.84rem;line-height:1.7;overflow-wrap:anywhere}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.steps li{position:relative;min-width:0}
.steps li::before{content:"";position:absolute;left:68px;right:-28px;top:28px;height:1px;background:linear-gradient(90deg,var(--line2),var(--line))}
.steps li:last-child::before{right:0;background:linear-gradient(90deg,var(--line2),transparent)}
.steps .ix{display:block;margin:16px 0 8px}

/* measurement readouts */
.meas{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.ro{position:relative;min-width:0;padding:16px 16px 14px 18px;background:var(--glass);border:1px solid var(--line);border-radius:10px;box-shadow:inset 0 0 30px rgba(190,90,255,.09)}
.ro .ch{position:absolute;top:10px;right:10px;width:20px;height:20px;display:grid;place-items:center;border:1px solid var(--line2);border-radius:4px;font:500 .68rem/1 var(--mono);color:var(--vi)}
.ro b{display:block;padding-right:24px;font:600 clamp(1.45rem,2.5vw,2.1rem)/1.1 var(--disp);color:var(--vi);font-variant-numeric:tabular-nums;text-shadow:0 0 18px rgba(221,140,255,.55);overflow-wrap:anywhere}
.ro .lb{display:block;margin-top:8px;font:400 .72rem/1.4 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--mut)}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:52px;align-items:center}
.hero+.meas{margin-top:36px}
.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:18px;font:500 .78rem/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mint)}
.lead{margin-top:18px;font-size:1.14rem;line-height:1.6;color:var(--body);max-width:62ch}
.bul{list-style:none;margin:22px 0 28px;padding:0;display:grid;gap:9px}
.bul li{position:relative;padding-left:26px;color:var(--tx);font-weight:500}
.bul li::before{content:"";position:absolute;left:0;top:.72em;width:16px;height:2px;background:var(--mint);box-shadow:0 0 8px var(--mint)}
.tube{padding:14px 14px 10px;background:linear-gradient(160deg,#2a1a40,#191024);border:1px solid var(--line2);border-radius:20px;box-shadow:0 30px 60px -30px #000,inset 0 1px 0 rgba(255,255,255,.08)}
.glass{aspect-ratio:5/4;border-radius:12px;overflow:hidden;background:radial-gradient(circle at 50% 45%,#1c0d2c,#07040b 78%);box-shadow:inset 0 0 0 1px rgba(221,140,255,.25),inset 0 0 40px #000}
.scr,.flat{display:block;width:100%;height:100%}
.grat path{stroke:rgba(221,140,255,.15);stroke-width:1}
.ax{stroke:rgba(221,140,255,.36);stroke-width:1}
.tk{stroke:rgba(221,140,255,.5);stroke-width:7;stroke-dasharray:1 7}
.rail{stroke:var(--mint);stroke-width:1;stroke-dasharray:4 7;opacity:.5}
.scr .clip{stroke:var(--mint);stroke-width:1.6;opacity:.62}
.scr .sig{stroke:var(--vi);stroke-width:2.6;stroke-linecap:round;filter:drop-shadow(0 0 5px rgba(221,140,255,.9))}
.flat path{stroke:var(--vi);stroke-width:2.4;filter:drop-shadow(0 0 5px rgba(221,140,255,.9))}
.bez{display:flex;justify-content:space-between;gap:12px;padding:10px 6px 0;font:400 .72rem/1.4 var(--mono);color:var(--mut);overflow-wrap:anywhere}
.bez span:last-child{color:var(--mint)}

/* code */
.codebox{border:1px solid var(--line2);border-radius:10px;overflow:hidden;background:var(--glass)}
.codetabs{display:flex;background:#150c21;border-bottom:1px solid var(--line);overflow-x:auto}
.codetabs button{min-height:46px;padding:0 20px;background:none;border:0;border-right:1px solid var(--line);color:var(--mut);font:500 .8rem/1 var(--mono);letter-spacing:.05em;cursor:pointer}
.codetabs button[aria-selected="true"]{color:var(--vi);background:var(--glass);box-shadow:inset 0 2px 0 var(--vi)}
pre.code{position:relative;margin:0;padding:20px 22px;max-width:100%;overflow-x:auto;background:var(--glass);color:#e9dff3;font:400 .86rem/1.68 var(--mono);tab-size:2;-webkit-overflow-scrolling:touch}
.prose pre.code{margin:1.4em 0;border:1px solid var(--line2);border-radius:10px}
pre.code code{font:inherit;background:none;padding:0;border:0;color:inherit;white-space:pre}
.code .k{color:var(--vi)}.code .s{color:var(--mint)}.code .c{color:#a595b8;font-style:italic}
.copy{position:sticky;right:0;float:right;min-width:60px;min-height:44px;margin:-10px -12px 6px 14px;padding:0 12px;background:#1d1230;border:1px solid var(--line2);border-radius:7px;color:var(--tx);font:500 .72rem/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;cursor:pointer}
.copy:hover{border-color:var(--vi);color:var(--vi)}

/* prose sheet */
.sheet{min-width:0;background:var(--pan);border:1px solid var(--line);border-radius:14px;padding:40px 44px 44px;box-shadow:0 24px 50px -30px #000}
.prose{max-width:74ch;min-width:0}
.read .prose{font-size:1.1rem;line-height:1.75;max-width:70ch}
.solo{max-width:880px}
.prose>*:first-child{margin-top:0}
.prose h2{position:relative;margin:2.3em 0 .7em;padding-top:22px;font-weight:600;font-size:clamp(1.4rem,2.4vw,1.72rem);scroll-margin-top:84px;border-top:1px solid var(--line)}
.prose h2::before{content:"";position:absolute;left:0;top:-2px;width:56px;height:3px;background:var(--vi);box-shadow:0 0 12px var(--vi)}
.prose h3{margin:1.7em 0 .5em;font-weight:600;font-size:1.2rem;scroll-margin-top:84px}
.prose p,.prose ul,.prose ol{margin:0 0 1.1em}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--vi)}
.prose strong{color:var(--tx);font-weight:600}
.prose :not(pre)>code,.keyout code{font:400 .88em var(--mono);background:var(--glass);border:1px solid var(--line);border-radius:5px;padding:.1em .4em;color:var(--mint);overflow-wrap:anywhere}
.prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:1.4em 0;font-size:.95rem;-webkit-overflow-scrolling:touch}
.prose th,.prose td{padding:11px 16px;border:1px solid var(--line);text-align:left;vertical-align:top}
.prose th{background:var(--pan2);font:500 .74rem/1.4 var(--mono);letter-spacing:.07em;text-transform:uppercase;color:var(--vi);white-space:nowrap}
.prose td{font-variant-numeric:tabular-nums}
.prose blockquote{margin:1.4em 0;padding:4px 0 4px 20px;border-left:3px solid var(--vi);color:var(--tx)}

/* faq */
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:56px;padding:12px 0;list-style:none;cursor:pointer;font:500 1.08rem/1.35 var(--disp);color:var(--tx)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:26px;height:26px;border:1px solid var(--line2);border-radius:50%;background:linear-gradient(var(--vi),var(--vi)) 50%/12px 2px no-repeat,linear-gradient(var(--vi),var(--vi)) 50%/2px 12px no-repeat;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(90deg);background:linear-gradient(var(--vi),var(--vi)) 50%/2px 12px no-repeat}
.faq details[open] summary{color:var(--vi)}
.faq p{padding:0 44px 20px 0;color:var(--mut);max-width:76ch}
.m-faq .mod-b{padding-top:12px;padding-bottom:12px}

/* closing trigger panel */
.trig{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px 40px;align-items:center;padding:40px 44px;background:radial-gradient(600px 240px at 85% 50%,rgba(190,90,255,.22),transparent 70%),var(--glass);border:1px solid var(--vi);border-radius:16px;box-shadow:0 0 0 4px rgba(221,140,255,.08),0 30px 60px -30px #000}
.trig h2{font-weight:600;font-size:clamp(1.5rem,3vw,2.1rem)}
.trig p{margin-top:10px;color:var(--mut);max-width:56ch}
.trig-a{display:flex;flex-wrap:wrap;gap:12px}
.bnc{position:absolute;top:-13px;right:36px;width:26px;height:26px;border-radius:50%;background:radial-gradient(circle,var(--vi) 0 18%,#110a1a 20% 44%,#6b4a86 46% 62%,#2a1a3d 64%);box-shadow:0 0 0 1px var(--line2)}
.bnc.b2{right:74px}

/* inner page tops */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font:400 .74rem/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--mut)}
.crumb a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}
.crumb+*{margin-top:8px}
.top{max-width:900px}
.sub{display:flex;align-items:baseline;gap:10px;margin-top:20px;font:400 .8rem/1.5 var(--mono);letter-spacing:.04em;color:var(--mint)}
.top+.meas{margin-top:34px}

/* key page */
.keyhero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:52px;align-items:start}
.keyhero h1{font-size:clamp(1.95rem,3.5vw,2.9rem)}
.ben{list-style:none;margin:30px 0 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 28px}
.ben li{display:flex;gap:12px;min-width:0}
.ben .ix{padding-top:5px}
.ben .ct{font-size:1.02rem}
.ben p{margin-top:5px;font-size:.93rem;line-height:1.5;color:var(--mut)}
.jack{display:flex;align-items:center;gap:12px;padding:0 18px;margin-bottom:-13px;position:relative;z-index:1}
.jack .bnc{position:static;flex:none}
.jack .blip{flex:1;margin:0;width:auto;height:14px;opacity:.7}
.form{padding:30px 26px 26px;background:linear-gradient(180deg,var(--pan2),#1c112c);border:1px solid var(--vi);border-radius:16px;box-shadow:0 0 0 4px rgba(221,140,255,.08),0 0 60px -10px rgba(190,90,255,.4),0 30px 60px -30px #000}
.tabs2{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;background:var(--glass);border:1px solid var(--line);border-radius:10px}
.tabs2 button{min-height:44px;padding:0 8px;background:none;border:0;border-radius:7px;color:var(--mut);font:600 .84rem/1.1 var(--disp);letter-spacing:.06em;text-transform:uppercase;cursor:pointer}
.tabs2 button[aria-selected="true"]{background:var(--vi);color:var(--ink)}
.msg{margin-top:14px;padding:11px 14px;border:1px solid var(--mint);border-radius:8px;font-size:.92rem;color:var(--tx)}
.msg:empty{display:none}
.msg.err{border-color:#ff8fa6;background:rgba(255,90,125,.12);color:#ffd0d9}
.row{margin-top:16px}
.form label,.calc label{display:block;margin-bottom:7px;font:500 .72rem/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mut)}
.form input,.calc input{display:block;width:100%;min-width:0;height:50px;padding:0 14px;background:var(--glass);border:1px solid var(--line2);border-radius:8px;color:var(--tx);font:400 1rem var(--mono);box-shadow:inset 0 0 18px rgba(190,90,255,.08)}
.form input:focus,.calc input:focus{outline:2px solid var(--vi);outline-offset:1px;border-color:var(--vi)}
.note{margin-top:8px;font-size:.82rem;line-height:1.45;color:var(--mut)}
.form .btn[data-submit]{width:100%;min-height:54px;margin-top:20px}
.form [data-note]{text-align:center;margin-top:12px}
.keyout{display:none}
.keyout.on{display:block}
.keyout h3{font-size:1.2rem;margin-bottom:12px}
.keybox{display:flex;align-items:center;gap:10px;padding:8px 8px 8px 14px;background:var(--glass);border:1px dashed var(--vi);border-radius:8px}
.keybox [data-key]{flex:1;min-width:0;font:500 .9rem/1.4 var(--mono);color:var(--mint);overflow-wrap:anywhere}
.keyout p{margin-top:12px;font-size:.94rem;line-height:1.9}
.keyout strong{font:500 .72rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--mut)}
.keyout .acts{margin-top:16px;gap:8px}
.mut{color:var(--mut)}

/* calculator */
.calc{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:end}
.calc>div{min-width:0}
.calc output{display:flex;align-items:center;height:50px;padding:0 14px;background:var(--glass);border:1px solid var(--vi);border-radius:8px;font:600 1.7rem/1 var(--disp);color:var(--vi);font-variant-numeric:tabular-nums;text-shadow:0 0 18px rgba(221,140,255,.6);overflow:hidden}
.m-calc .acts{margin-top:24px}

/* docs + article */
.two{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:start}
.side{position:sticky;top:84px;display:grid;gap:18px;min-width:0;max-height:calc(100vh - 100px);overflow:auto}
.toc,.sidecard{background:var(--pan);border:1px solid var(--line);border-radius:12px;padding:18px}
.toc-h,.sc-h{font:600 .8rem/1.2 var(--disp);letter-spacing:.12em;text-transform:uppercase;color:var(--vi);margin-bottom:8px}
.toc ol{list-style:none;margin:0;padding:0}
.toc a{display:flex;gap:10px;align-items:baseline;min-height:44px;padding:9px 0;border-top:1px solid var(--line);color:var(--body);text-decoration:none;font-size:.9rem;line-height:1.4}
.toc a span{font:500 .72rem var(--mono);color:var(--vi);flex:none}
.toc a:hover{color:var(--vi2)}
.sidecard .sc-h{font-size:.95rem;letter-spacing:.04em;color:var(--tx)}
.sidecard p{font-size:.9rem;line-height:1.5;color:var(--mut)}
.sidecard .btn{width:100%;margin-top:14px}
.take{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.take li{display:flex;gap:12px;min-width:0;padding:16px 18px;background:var(--glass);border:1px solid var(--line);border-radius:10px;color:var(--tx);line-height:1.5}
.take .ix{padding-top:6px}

/* 404 */
.nf{max-width:640px;margin:20px auto 0;text-align:center}
.nf .tube{margin-bottom:34px}
.nf .glass{aspect-ratio:5/1.4}
.nf .lead{margin-left:auto;margin-right:auto}
.nf .acts{justify-content:center;margin-top:28px}

/* footer */
.ft{border-top:1px solid var(--line2);background:#0c0713}
.ft-in{max-width:1180px;margin:0 auto;padding:36px 24px 44px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:20px 40px;align-items:start}
.ft-b p{margin-top:6px;font:400 .76rem/1.5 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--mut)}
.ft-l{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:0 22px;justify-content:flex-end}
.ft-l a{display:inline-flex;align-items:center;min-height:44px;color:var(--body);text-decoration:none;font-size:.92rem}
.ft-l a:hover{color:var(--vi)}
.legal{grid-column:1/-1;padding-top:18px;border-top:1px solid var(--line);font-size:.82rem;line-height:1.6;color:var(--mut)}

/* trace draw-in */
@media (prefers-reduced-motion:no-preference){.tube .sig{stroke-dasharray:2400;animation:draw 1.5s ease-out both}}
@keyframes draw{from{stroke-dashoffset:2400}to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:1000px){
.mod,.bench>.sheet{width:100%}
.hero{grid-template-columns:minmax(0,1fr);gap:32px}
.tube{max-width:560px}
.keyhero{grid-template-columns:minmax(0,1fr);gap:24px}
.kh-t{display:contents}
.keyhero h1{order:1}.keyhero .lead{order:2;margin-top:0}.kh-f{order:3;max-width:520px;width:100%}.ben{order:4;margin-top:8px}
.two{grid-template-columns:minmax(0,1fr);gap:24px}
.side{position:static;max-height:none}
.sidecard{display:none}
.trig{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:860px){
.burger{display:inline-flex}
.btn.key{margin-left:auto}
.nav{display:none;position:absolute;left:0;right:0;top:100%;margin:0;padding:8px 24px 14px;flex-direction:column;align-items:stretch;background:#150c22;border-bottom:1px solid var(--line2);box-shadow:0 24px 40px -20px #000}
.nav.open{display:flex}
.nav a{min-height:50px;padding:0;border-bottom:1px solid var(--line)}
.nav a:last-child{border-bottom:0}
.nav a[aria-current]::after{left:auto;right:0;bottom:auto;top:50%;width:8px;height:8px;margin-top:-4px;border-radius:50%}
.c3{grid-template-columns:repeat(2,minmax(0,1fr))}
.ex.c3{grid-template-columns:minmax(0,1fr)}
.meas{grid-template-columns:repeat(2,minmax(0,1fr))}
.ro:last-child:nth-child(odd){grid-column:1/-1}
.calc{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
:root{--face:78px;--strip:58px}
.page-home{--face:112px}
body{font-size:1rem}
.face-in{padding:0 16px 12px;gap:6px}
.ep{display:none}
.tag{font-size:.66rem}
.strip-in{padding:0 16px;gap:10px}
.logo{font-size:.92rem;gap:8px}
.mk{width:28px;height:28px}
.btn.key{padding:0 12px;font-size:.76rem;letter-spacing:.02em}
.nav{padding:8px 16px 14px}
.bench{padding:28px 16px 64px}
.bench>*+*{margin-top:40px}
.mod-h{padding:12px 16px;gap:10px}
.mod-h h2{font-size:1rem}
.blip{flex-basis:44px}
.mod-b{padding:18px 16px}
.c3,.c2,.steps,.take,.ben{grid-template-columns:minmax(0,1fr)}
.steps{gap:22px}
.steps li{padding-left:72px;min-height:56px}
.steps li::before{left:28px;right:auto;top:60px;bottom:-22px;width:1px;height:auto;background:var(--line2)}
.steps li:last-child::before{display:none}
.steps .knob{position:absolute;left:0;top:0}
.steps .ix{margin:0 0 6px}
.sheet{padding:26px 18px 28px}
.read .prose{font-size:1.04rem}
.trig{padding:34px 20px 26px}
.trig-a .btn{width:100%}
.hero .acts .btn{flex:1 1 100%}
.form{padding:26px 18px 22px}
.faq p{padding-right:0}
.ft-in{grid-template-columns:minmax(0,1fr);padding:30px 16px 36px}
.ft-l{justify-content:flex-start}
.prose th,.prose td{padding:9px 12px}
pre.code{padding:14px 16px 18px}
.copy{display:block;float:none;margin:0 0 10px auto}
}
@media (max-width:380px){.strip .logo span{display:none}}