/* =========================================================
   OPTIMUS GEN 3 — Technical Dossier design system
   Aesthetic: engineering spec sheet / drafting frame
   ========================================================= */

/* ---------- TOKENS ---------- */
:root{
  color-scheme: dark;

  --bg:        #0B0C0E;
  --bg-2:      #0F1114;
  --panel:     #13161B;
  --panel-2:   #171B21;
  --line:      #23272F;
  --line-2:    #333944;
  --stroke:    #6B7788;
  --ink:       #F3F4F1;
  --ink-2:     #AEB4BE;
  --ink-3:     #7C8490;
  --accent:    #FF5C24;
  --accent-2:  #FF8551;
  --accent-ink:#120600;
  --warn:      #FFB020;
  --ok:        #6FE38A;
  --danger:    #FF4D4D;

  --ff-display:'Space Grotesk','Helvetica Neue',Arial,sans-serif;
  --ff-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  /* fluid type scale */
  --t-hero:  clamp(2.85rem, 8.4vw, 7.4rem);
  --t-h2:    clamp(2.05rem, 5.2vw, 4.1rem);
  --t-h3:    clamp(1.3rem, 2.4vw, 1.85rem);
  --t-lead:  clamp(1.02rem, 1.5vw, 1.2rem);
  --t-body:  1rem;
  --t-mono:  .72rem;

  --sp-1:.5rem; --sp-2:1rem; --sp-3:1.5rem; --sp-4:2rem;
  --sp-5:3rem; --sp-6:4rem; --sp-7:6rem; --sp-8:8rem;

  --wrap: 1320px;
  --gut:  clamp(1.15rem, 4vw, 3.25rem);
  --rail: 46px;

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --dur: 320ms;

  --z-grid:0; --z-base:1; --z-frame:60; --z-nav:80; --z-panel:90; --z-modal:100;
}

/* ---------- RESET ---------- */
*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--ff-display);
  font-size:var(--t-body);
  line-height:1.6;
  font-synthesis-weight:none;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
img{height:auto}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;padding:0}
::selection{background:var(--accent);color:var(--accent-ink)}

/* ---------- FOCUS ---------- */
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{
  outline:2px solid var(--warn);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- SKIP LINK ---------- */
.skip{
  position:fixed;top:-100px;left:var(--gut);z-index:var(--z-modal);
  background:var(--accent);color:var(--accent-ink);
  padding:.7rem 1.1rem;font-family:var(--ff-mono);font-size:.78rem;
  letter-spacing:.1em;text-transform:uppercase;transition:top 180ms var(--ease);
}
.skip:focus{top:1rem}

/* ---------- BLUEPRINT BACKDROP ---------- */
.grid-bg{
  position:fixed;inset:0;z-index:var(--z-grid);pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:clamp(46px,7vw,92px) clamp(46px,7vw,92px);
  mask-image:radial-gradient(ellipse 120% 90% at 50% 20%, #000 35%, transparent 100%);
}
.grid-bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 560px at 78% -8%, rgba(255,92,36,.13), transparent 62%);
}

/* ---------- DRAFTING FRAME ---------- */
.frame{position:fixed;inset:0;z-index:var(--z-frame);pointer-events:none}
.frame span{position:absolute;width:13px;height:13px;border:1px solid var(--line-2)}
.frame span:nth-child(1){top:12px;left:12px;border-right:0;border-bottom:0}
.frame span:nth-child(2){top:12px;right:12px;border-left:0;border-bottom:0}
.frame span:nth-child(3){bottom:12px;left:12px;border-right:0;border-top:0}
.frame span:nth-child(4){bottom:12px;right:12px;border-left:0;border-top:0}
@media (max-width:760px){.frame{display:none}}

/* ---------- SIDE RAIL ---------- */
.rail{
  position:fixed;top:0;bottom:0;left:0;width:var(--rail);
  border-right:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  z-index:var(--z-frame);background:rgba(11,12,14,.55);backdrop-filter:blur(6px);
  pointer-events:none;
}
.rail b{
  writing-mode:vertical-rl;transform:rotate(180deg);
  font-family:var(--ff-mono);font-size:.66rem;font-weight:400;
  letter-spacing:.42em;text-transform:uppercase;color:var(--ink-3);
}
.rail i{position:absolute;left:0;width:9px;height:1px;background:var(--line-2)}
.rail i:nth-of-type(1){top:16%}.rail i:nth-of-type(2){top:34%}
.rail i:nth-of-type(3){top:52%}.rail i:nth-of-type(4){top:70%}
.rail i:nth-of-type(5){top:88%}
@media (max-width:1100px){.rail{display:none} :root{--rail:0px}}

/* ---------- LAYOUT ---------- */
.wrap{width:min(100% - (var(--gut)*2), var(--wrap));margin-inline:auto}
.page{padding-left:var(--rail)}
section{position:relative;z-index:var(--z-base)}
.sec{padding-block:clamp(4rem,10vw,8.5rem)}
.sec--tight{padding-block:clamp(3rem,7vw,5.5rem)}

/* ---------- MONO LABEL ---------- */
.mono{
  font-family:var(--ff-mono);font-size:var(--t-mono);
  letter-spacing:.24em;text-transform:uppercase;color:var(--ink-3);
}
.mono--acc{color:var(--accent)}

/* ---------- SECTION HEADER ---------- */
.sec-head{
  display:grid;grid-template-columns:auto 1fr;align-items:center;
  gap:1rem;margin-bottom:clamp(2rem,4vw,3.4rem);
}
.sec-head .idx{
  font-family:var(--ff-mono);font-size:var(--t-mono);letter-spacing:.2em;
  color:var(--accent);border:1px solid var(--accent);padding:.3rem .55rem;
}
.sec-head .lbl{
  font-family:var(--ff-mono);font-size:var(--t-mono);letter-spacing:.24em;
  text-transform:uppercase;color:var(--ink-2);white-space:nowrap;
}
.sec-head .rule{height:1px;background:var(--line);width:100%}
.sec-title{
  font-size:var(--t-h2);font-weight:700;line-height:1.02;letter-spacing:-.035em;
  text-wrap:balance;max-width:19ch;
}
.sec-intro{color:var(--ink-2);max-width:56ch;font-size:var(--t-lead);margin-top:1.1rem}

/* ---------- BUTTONS ---------- */
.btn{
  --bd:var(--stroke);
  display:inline-flex;align-items:center;gap:.7rem;
  min-height:52px;padding:.85rem 1.6rem;
  border:1px solid var(--bd);background:transparent;color:var(--ink);
  font-family:var(--ff-mono);font-size:.76rem;letter-spacing:.18em;
  text-transform:uppercase;cursor:pointer;position:relative;overflow:hidden;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform 160ms var(--ease);
  touch-action:manipulation;
}
.btn::before{
  content:"";position:absolute;inset:0;background:var(--accent);
  transform:translateY(101%);transition:transform 380ms var(--ease-out);z-index:-1;
}
.btn span{position:relative;z-index:1}
.btn svg{width:15px;height:15px;position:relative;z-index:1;transition:transform 300ms var(--ease)}
.btn:hover{border-color:var(--accent);color:var(--accent-ink)}
.btn:hover::before{transform:translateY(0)}
.btn:hover svg{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:700}
.btn--primary::before{background:var(--ink)}
.btn--primary:hover{color:var(--bg);border-color:var(--ink)}
.btn--block{width:100%;justify-content:center}
.btn[disabled]{opacity:.45;cursor:not-allowed;pointer-events:none}

/* ---------- NAV ---------- */
.nav{
  position:fixed;top:0;left:var(--rail);right:0;z-index:var(--z-nav);
  border-bottom:1px solid transparent;transition:background 300ms var(--ease),border-color 300ms var(--ease);
}
.nav.is-stuck{background:rgba(11,12,14,.86);backdrop-filter:blur(14px) saturate(140%);border-bottom-color:var(--line)}
.nav__in{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  height:72px;width:min(100% - (var(--gut)*2), var(--wrap));margin-inline:auto;
}
.brand{display:flex;align-items:center;gap:.65rem;font-weight:700;letter-spacing:-.02em}
.brand__mark{width:26px;height:26px;flex:0 0 auto}
.brand__mark rect{fill:var(--accent)}
.brand__txt{font-size:1rem}
.brand__txt i{color:var(--accent);font-style:normal}
.nav__links{display:flex;align-items:center;gap:.35rem}
.nav__links a{
  font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-2);padding:.65rem .8rem;position:relative;transition:color 200ms var(--ease);
}
.nav__links a::after{
  content:"";position:absolute;left:.8rem;right:.8rem;bottom:.42rem;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform 260ms var(--ease);
}
.nav__links a:hover{color:var(--ink)}
.nav__links a:hover::after{transform:scaleX(1)}
.nav__cta{margin-left:.6rem;min-height:42px;padding:.55rem 1.1rem}
.burger{
  display:none;width:46px;height:46px;border:1px solid var(--stroke);background:transparent;
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger i{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform 260ms var(--ease),opacity 200ms}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
@media (max-width:980px){
  .nav__links{
    position:fixed;inset:72px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-2);border-block:1px solid var(--line);padding:.5rem var(--gut) 1.4rem;
    transform:translateY(-120%);transition:transform 420ms var(--ease-out);
    max-height:calc(100dvh - 72px);overflow-y:auto;
  }
  .nav__links.is-open{transform:translateY(0)}
  .nav__links a{padding:1.05rem 0;border-bottom:1px solid var(--line);font-size:.82rem}
  .nav__links a::after{display:none}
  .nav__cta{margin:1.2rem 0 0;justify-content:center}
  .burger{display:flex}
}

/* ---------- HERO ---------- */
.hero{position:relative;padding-top:clamp(7rem,13vw,9.5rem);padding-bottom:clamp(3rem,6vw,5rem);overflow:hidden}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(2rem,5vw,4rem);align-items:center}
.hero__eyebrow{display:flex;align-items:center;gap:.7rem;margin-bottom:1.6rem;flex-wrap:wrap}
.pulse{width:7px;height:7px;background:var(--ok);border-radius:50%;box-shadow:0 0 0 0 rgba(111,227,138,.55);animation:pulse 2.4s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(111,227,138,0)}100%{box-shadow:0 0 0 0 rgba(111,227,138,0)}}
.hero h1{
  font-size:var(--t-hero);font-weight:700;line-height:.86;letter-spacing:-.05em;
  margin-bottom:1.5rem;
}
.hero h1 .l{display:block;overflow:hidden;padding-bottom:.09em;margin-bottom:-.09em}
.hero h1 .l > span{display:block}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero__sub{color:var(--ink-2);font-size:var(--t-lead);max-width:46ch;margin-bottom:2rem}
.hero__actions{display:flex;flex-wrap:wrap;gap:.9rem;margin-bottom:2.6rem}
.hero__stats{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.hero__stats div{padding:1.15rem 1rem 0 0}
.hero__stats .n{
  font-size:clamp(1.55rem,3.2vw,2.3rem);font-weight:700;letter-spacing:-.03em;line-height:1;
  font-variant-numeric:tabular-nums;
}
.hero__stats .n sup{font-size:.48em;color:var(--accent);vertical-align:super;margin-left:.12em}
.hero__stats .k{margin-top:.5rem;display:block}

/* robot stage */
.stage{position:relative;justify-self:center;width:100%;max-width:400px}
.stage__svg{position:relative;filter:drop-shadow(0 30px 60px rgba(0,0,0,.6))}
.stage__svg svg{width:100%;height:auto}
.stage::before{
  content:"";position:absolute;left:50%;top:50%;translate:-50% -50%;
  width:112%;aspect-ratio:1;border:1px solid var(--line);border-radius:50%;
  background:radial-gradient(circle,rgba(255,92,36,.09),transparent 62%);
}
.core-ring{transform-origin:center;animation:spin 9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.visor{animation:visor 4.5s ease-in-out infinite}
@keyframes visor{0%,100%{opacity:.85}50%{opacity:.45}}

/* telemetry chips floating on stage */
.tele{position:absolute;display:flex;align-items:center;gap:.5rem;
  background:rgba(16,18,22,.9);border:1px solid var(--line-2);
  padding:.45rem .65rem;backdrop-filter:blur(8px);white-space:nowrap}
.tele b{font-family:var(--ff-mono);font-size:.7rem;color:var(--ink);font-weight:500;font-variant-numeric:tabular-nums}
.tele .k{font-family:var(--ff-mono);font-size:.6rem;letter-spacing:.16em;color:var(--ink-3);text-transform:uppercase}
.tele--a{top:12%;left:-6%}
.tele--b{top:46%;right:-8%}
.tele--c{bottom:14%;left:-4%}
@media (max-width:1180px){.tele--a{left:0}.tele--b{right:0}.tele--c{left:0}}
@media (max-width:1024px){
  .hero__grid{grid-template-columns:minmax(0,1fr) minmax(0,.8fr)}
  .stage{max-width:300px}
  .tele{display:none}
}
@media (max-width:700px){
  .hero__grid{grid-template-columns:1fr}
  .stage{order:-1;max-width:260px}
}
@media (max-width:420px){.hero__stats{grid-template-columns:1fr 1fr}.hero__stats div:last-child{grid-column:span 2}}

/* ---------- TICKER ---------- */
.ticker{
  border-block:1px solid var(--line);background:var(--bg-2);
  overflow:hidden;position:relative;
}
.ticker__track{display:flex;width:max-content;animation:slide 38s linear infinite}
.ticker:hover .ticker__track{animation-play-state:paused}
.ticker__track span{
  font-family:var(--ff-mono);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--ink-2);padding:1rem 0;display:flex;align-items:center;
}
.ticker__track span::after{content:"";width:5px;height:5px;background:var(--accent);margin-inline:2.2rem;rotate:45deg}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- ANATOMY EXPLORER ---------- */
.anat{display:grid;grid-template-columns:minmax(0,.88fr) minmax(0,1.12fr);gap:clamp(2rem,4vw,3.5rem);align-items:start}
.anat > div{display:flex;flex-direction:column}
.anat__panel{flex:1}
.anat__fig{position:relative;border:1px solid var(--line);background:
  linear-gradient(180deg,var(--panel),var(--bg-2));padding:1.5rem;overflow:hidden}
.anat__fig::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:22px 22px;
}
.anat__fig svg{max-height:min(66vh,600px);margin-inline:auto;width:auto}
.hot{
  position:absolute;width:30px;height:30px;border-radius:50%;
  border:1px solid var(--stroke);background:rgba(11,12,14,.75);cursor:pointer;
  display:grid;place-items:center;padding:0;
  transition:border-color 240ms var(--ease),background 240ms var(--ease),transform 240ms var(--ease);
}
.hot::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink-3);transition:background 240ms}
.hot::before{
  content:"";position:absolute;inset:-8px;border-radius:50%;border:1px solid var(--accent);
  opacity:0;transform:scale(.7);transition:opacity 320ms var(--ease),transform 320ms var(--ease);
}
.hot:hover,.hot:focus-visible{border-color:var(--accent);transform:scale(1.12)}
.hot[aria-pressed="true"]{background:var(--accent);border-color:var(--accent)}
.hot[aria-pressed="true"]::after{background:var(--accent-ink)}
.hot[aria-pressed="true"]::before{opacity:.5;transform:scale(1)}
.anat__panel{border:1px solid var(--line);background:var(--panel);padding:clamp(1.4rem,3vw,2.4rem);min-height:100%}
.anat__panel h3{font-size:var(--t-h3);font-weight:700;letter-spacing:-.02em;margin:.75rem 0 .9rem}
.anat__panel p{color:var(--ink-2);max-width:54ch}
.anat__specs{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1px;background:var(--line);margin-top:1.8rem;border:1px solid var(--line)}
.anat__specs div{background:var(--panel-2);padding:1rem}
.anat__specs .mono{display:block}
.anat__specs .v{display:block;font-family:var(--ff-mono);font-size:1.02rem;color:var(--ink);font-variant-numeric:tabular-nums;margin-top:.4rem}
.anat__nav{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1.8rem}
.anat__nav button{
  border:1px solid var(--stroke);background:transparent;color:var(--ink-2);
  font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;
  padding:.6rem .85rem;cursor:pointer;min-height:40px;
  transition:all 220ms var(--ease);
}
.anat__nav button:hover{border-color:var(--accent);color:var(--ink)}
.anat__nav button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
@media (max-width:900px){.anat{grid-template-columns:1fr}.anat__fig svg{max-height:52vh}}

/* ---------- BENTO CAPABILITIES ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cell{background:var(--bg-2);padding:clamp(1.5rem,2.6vw,2.4rem);position:relative;overflow:hidden;transition:background 320ms var(--ease)}
.cell:hover{background:var(--panel-2)}
.cell::after{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform 420ms var(--ease-out);
}
.cell:hover::after{transform:scaleX(1)}
.cell--w3{grid-column:span 3}
.cell--w2{grid-column:span 2}
.cell--w6{grid-column:span 6}
.cell__ico{width:34px;height:34px;color:var(--accent);margin-bottom:1.3rem}
.cell__ico svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.5}
.cell h3{font-size:var(--t-h3);font-weight:700;letter-spacing:-.02em;margin-bottom:.7rem}
.cell p{color:var(--ink-2);max-width:48ch}
.cell__num{
  position:absolute;right:1.2rem;top:1.1rem;font-family:var(--ff-mono);font-size:.68rem;
  letter-spacing:.16em;color:var(--line-2);
}
.cell--wide{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(1.5rem,3vw,3rem);align-items:center}
.cell--wide img{border:1px solid var(--line);width:100%}
@media (max-width:900px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .cell--w3,.cell--w6{grid-column:span 2}
  .cell--w2{grid-column:span 1}
  .cell--wide{grid-template-columns:1fr}
}
@media (max-width:620px){
  .bento{grid-template-columns:1fr}
  .cell--w3,.cell--w2,.cell--w6{grid-column:span 1}
}

/* ---------- SPEC TABLE ---------- */
.spec__tabs{display:flex;flex-wrap:wrap;gap:1px;background:var(--line);border:1px solid var(--line);border-bottom:0}
.spec__tabs button{
  flex:1 1 150px;background:var(--bg-2);border:0;cursor:pointer;
  padding:1.05rem 1rem;min-height:54px;
  font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-3);transition:color 220ms var(--ease),background 220ms var(--ease);position:relative;
}
.spec__tabs button:hover{color:var(--ink)}
.spec__tabs button[aria-selected="true"]{background:var(--panel-2);color:var(--accent)}
.spec__tabs button[aria-selected="true"]::after{content:"";position:absolute;inset:auto 0 0 0;height:2px;background:var(--accent)}
.spec__body{border:1px solid var(--line);background:var(--panel)}
.spec table{width:100%;border-collapse:collapse}
.spec caption{text-align:left;padding:1.2rem clamp(1rem,2.4vw,1.8rem);border-bottom:1px solid var(--line);color:var(--ink-2);font-size:.9rem}
.spec th,.spec td{padding:1.02rem clamp(1rem,2.4vw,1.8rem);text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{
  font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-3);font-weight:400;width:44%;
}
.spec td{font-variant-numeric:tabular-nums;color:var(--ink)}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.spec tbody tr{transition:background 200ms var(--ease)}
.spec tbody tr:hover{background:var(--panel-2)}
.spec td em{font-style:normal;color:var(--ink-3);font-size:.84rem;display:block;margin-top:.2rem;font-family:var(--ff-display)}

/* ---------- DEPLOYMENT CARDS ---------- */
.deploy{display:grid;grid-template-columns:repeat(auto-fit,minmax(275px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.dcard{background:var(--bg-2);display:flex;flex-direction:column}
.dcard img{width:100%;height:auto;border-bottom:1px solid var(--line);transition:opacity 320ms var(--ease)}
.dcard:hover img{opacity:.82}
.dcard__b{padding:clamp(1.3rem,2.2vw,1.9rem);flex:1;display:flex;flex-direction:column;gap:.7rem}
.dcard h3{font-size:1.18rem;font-weight:700;letter-spacing:-.015em}
.dcard p{color:var(--ink-2);font-size:.94rem}
.dcard ul{margin-top:auto;padding-top:1.1rem;border-top:1px solid var(--line);display:grid;gap:.45rem}
.dcard li{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.1em;color:var(--ink-3);position:relative;padding-left:.95rem}
.dcard li::before{content:"";position:absolute;left:0;top:.5rem;width:4px;height:4px;background:var(--accent)}

/* ---------- TIMELINE ---------- */
.tl{position:relative;display:grid;gap:0;border-left:1px solid var(--line);margin-left:.4rem}
.tl__item{position:relative;padding:0 0 clamp(2rem,4vw,3rem) clamp(1.6rem,3vw,2.6rem)}
.tl__item::before{
  content:"";position:absolute;left:-5px;top:.55rem;width:9px;height:9px;
  background:var(--bg);border:1px solid var(--line-2);rotate:45deg;
}
.tl__item.is-done::before{background:var(--accent);border-color:var(--accent)}
.tl__item.is-now::before{background:var(--warn);border-color:var(--warn);box-shadow:0 0 0 4px rgba(255,176,32,.15)}
.tl__item h3{font-size:1.14rem;font-weight:700;margin:.4rem 0 .5rem;letter-spacing:-.015em}
.tl__item p{color:var(--ink-2);max-width:60ch;font-size:.95rem}
.tag{
  display:inline-block;font-family:var(--ff-mono);font-size:.62rem;letter-spacing:.16em;
  text-transform:uppercase;padding:.28rem .5rem;border:1px solid var(--line-2);color:var(--ink-3);
}
.tag--done{border-color:rgba(111,227,138,.4);color:var(--ok)}
.tag--now{border-color:rgba(255,176,32,.5);color:var(--warn)}

/* ---------- CONFIGURATOR ---------- */
.cfg{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cfg__opts,.cfg__sum{background:var(--bg-2);padding:clamp(1.4rem,3vw,2.4rem)}
.cfg__group{padding-block:1.5rem;border-bottom:1px solid var(--line)}
.cfg__group:first-child{padding-top:0}
.cfg__group:last-of-type{border-bottom:0;padding-bottom:0}
.cfg__group > .mono{display:block;margin-bottom:1rem}
.opts{display:grid;gap:.6rem}
.opt{
  display:grid;grid-template-columns:22px 1fr auto;gap:.9rem;align-items:start;
  border:1px solid var(--stroke);padding:1rem 1.1rem;cursor:pointer;
  transition:border-color 220ms var(--ease),background 220ms var(--ease);min-height:56px;
}
.opt:hover{border-color:var(--ink-2)}
.opt input{position:absolute;opacity:0;width:0;height:0}
.opt__dot{width:16px;height:16px;border:1px solid var(--stroke);border-radius:50%;margin-top:.28rem;display:grid;place-items:center;transition:border-color 200ms}
.opt__dot::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);transform:scale(0);transition:transform 220ms var(--ease-out)}
.opt:has(input:checked){border-color:var(--accent);background:rgba(255,92,36,.055)}
.opt:has(input:checked) .opt__dot{border-color:var(--accent)}
.opt:has(input:checked) .opt__dot::after{transform:scale(1)}
.opt:has(input:focus-visible){outline:2px solid var(--warn);outline-offset:3px}
.opt__t{font-weight:600;letter-spacing:-.01em}
.opt__d{color:var(--ink-3);font-size:.86rem;margin-top:.2rem;display:block}
.opt__p{font-family:var(--ff-mono);font-size:.78rem;color:var(--ink-2);white-space:nowrap;font-variant-numeric:tabular-nums;margin-top:.2rem}
.cfg__sum{align-self:stretch}
.sum__inner{display:flex;flex-direction:column;gap:1rem;position:sticky;top:90px}
.sum__rows{display:grid;gap:.75rem;padding-bottom:1rem;border-bottom:1px solid var(--line)}
.sum__row{display:flex;justify-content:space-between;gap:1rem;font-size:.88rem}
.sum__row span:first-child{color:var(--ink-3);font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;padding-top:.15rem}
.sum__row span:last-child{text-align:right;font-weight:500}
.sum__total{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;padding-top:.3rem}
.sum__total b{font-size:clamp(1.6rem,3vw,2.1rem);font-weight:700;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.sum__note{color:var(--ink-3);font-size:.8rem;line-height:1.55}
@media (max-width:900px){.cfg{grid-template-columns:1fr}.sum__inner{position:static}}

/* ---------- FORM ---------- */
.form{display:grid;gap:1.15rem;margin-top:1.4rem}
.field{display:grid;gap:.45rem}
.field label{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.field label .req{color:var(--accent);margin-left:.2rem}
.field input,.field select,.field textarea{
  background:var(--panel);border:1px solid var(--stroke);padding:.9rem 1rem;
  min-height:52px;width:100%;font-size:1rem;color:var(--ink);
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.field textarea{min-height:110px;resize:vertical;line-height:1.55}
.field input::placeholder,.field textarea::placeholder{color:#5D646E}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--ink-2)}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--warn);outline-offset:2px;border-color:var(--accent)}
.field .help{font-size:.8rem;color:var(--ink-3)}
.field .err{font-size:.8rem;color:var(--danger);display:none;align-items:center;gap:.4rem}
.field.is-invalid input,.field.is-invalid select,.field.is-invalid textarea{border-color:var(--danger)}
.field.is-invalid .err{display:flex}
.field.is-invalid .err::before{content:"!";display:grid;place-items:center;width:14px;height:14px;border:1px solid var(--danger);font-family:var(--ff-mono);font-size:.62rem;flex:0 0 auto}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:1.15rem}
@media (max-width:640px){.form__row{grid-template-columns:1fr}}
.check{display:grid;grid-template-columns:20px 1fr;gap:.75rem;align-items:start;cursor:pointer;font-size:.88rem;color:var(--ink-2);line-height:1.5}
.check input{position:absolute;opacity:0;width:0;height:0}
.check__box{width:18px;height:18px;border:1px solid var(--stroke);margin-top:.15rem;display:grid;place-items:center;transition:all 200ms var(--ease)}
.check__box svg{width:11px;height:11px;stroke:var(--accent-ink);stroke-width:3;fill:none;opacity:0;transition:opacity 180ms}
.check input:checked + .check__box{background:var(--accent);border-color:var(--accent)}
.check input:checked + .check__box svg{opacity:1}
.check input:focus-visible + .check__box{outline:2px solid var(--warn);outline-offset:3px}
.check a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--accent)}
.check a:hover{color:var(--accent)}
.form__summary{
  display:none;border:1px solid var(--danger);background:rgba(255,77,77,.08);
  padding:1rem 1.15rem;gap:.5rem;
}
.form__summary.is-shown{display:grid}
.form__summary p{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--danger)}
.form__summary a{font-size:.88rem;color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.form__done{
  display:none;border:1px solid rgba(111,227,138,.45);background:rgba(111,227,138,.07);
  padding:1.6rem;text-align:center;
}
.form__done.is-shown{display:block}
.form__done h3{font-size:1.25rem;font-weight:700;margin:.8rem 0 .5rem}
.form__done p{color:var(--ink-2);font-size:.92rem;max-width:44ch;margin-inline:auto}
.form__done .ref{font-family:var(--ff-mono);color:var(--accent);margin-top:1rem;font-size:.82rem;letter-spacing:.14em}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:1.5rem 3rem 1.5rem 0;position:relative;
  font-size:clamp(1.02rem,1.7vw,1.22rem);font-weight:600;letter-spacing:-.015em;
  transition:color 220ms var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq summary::after,.faq summary::before{
  content:"";position:absolute;right:.35rem;top:50%;background:var(--accent);transition:transform 320ms var(--ease-out);
}
.faq summary::after{width:14px;height:1.5px;translate:0 -50%}
.faq summary::before{width:1.5px;height:14px;translate:0 -50%;right:calc(.35rem + 6.25px)}
.faq details[open] summary::before{transform:rotate(90deg);opacity:0}
.faq .a{padding:0 clamp(1rem,6vw,4rem) 1.7rem 0;color:var(--ink-2);max-width:74ch}
.faq .a p + p{margin-top:.8rem}

/* ---------- HAZARD STRIPE ---------- */
.hazard{
  height:10px;
  background:repeating-linear-gradient(45deg,var(--accent) 0 10px,transparent 10px 20px);
  opacity:.65;
}

/* ---------- CTA BAND ---------- */
.band{border-block:1px solid var(--line);background:var(--bg-2);position:relative;overflow:hidden}
.band__in{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:clamp(1.5rem,4vw,3rem);align-items:center;padding-block:clamp(2.6rem,6vw,4.6rem)}
.band h2{font-size:var(--t-h2);font-weight:700;letter-spacing:-.035em;line-height:1.04;max-width:18ch;text-wrap:balance}
.band p{color:var(--ink-2);margin-top:1rem;max-width:52ch}
@media (max-width:860px){.band__in{grid-template-columns:1fr}}

/* ---------- FOOTER ---------- */
.foot{padding-top:clamp(3rem,6vw,5rem);padding-bottom:2rem;border-top:1px solid var(--line)}
.foot__top{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:clamp(1.8rem,4vw,3rem);padding-bottom:clamp(2.4rem,5vw,3.6rem)}
.foot__about p{color:var(--ink-2);font-size:.92rem;max-width:40ch;margin-top:1.1rem}
.foot .foot__h{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);margin-bottom:1.1rem}
.foot ul{display:grid;gap:.68rem}
.foot ul a{color:var(--ink-2);font-size:.92rem;transition:color 200ms var(--ease);display:inline-block}
.foot ul a:hover{color:var(--accent)}
.foot__bot{border-top:1px solid var(--line);padding-top:1.6rem;display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center}
.foot__bot p,.foot__bot a{font-family:var(--ff-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.foot__legal{display:flex;flex-wrap:wrap;gap:1.2rem}
.foot__legal a:hover{color:var(--accent)}
.disclaim{border:1px solid var(--line);background:var(--panel);padding:1.1rem 1.3rem;margin-top:1.8rem}
.disclaim p{font-size:.8rem;color:var(--ink-3);line-height:1.6;max-width:none}
@media (max-width:880px){.foot__top{grid-template-columns:1fr 1fr}.foot__about{grid-column:span 2}}
@media (max-width:520px){.foot__top{grid-template-columns:1fr}.foot__about{grid-column:span 1}}

/* ---------- COOKIE BAR ---------- */
.cookie{
  position:fixed;left:calc(var(--rail) + 1rem);right:1rem;bottom:1rem;z-index:var(--z-panel);
  background:var(--panel);border:1px solid var(--stroke);
  padding:1.15rem 1.3rem;display:none;gap:1.2rem;align-items:center;
  box-shadow:0 20px 60px rgba(0,0,0,.6);max-width:760px;
}
.cookie.is-shown{display:flex;animation:cookieIn 460ms var(--ease-out)}
@keyframes cookieIn{from{opacity:0;transform:translateY(18px)}}
.cookie p{font-size:.86rem;color:var(--ink-2);line-height:1.55}
.cookie p a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--accent)}
.cookie__acts{display:flex;gap:.6rem;flex:0 0 auto}
.cookie .btn{min-height:44px;padding:.6rem 1.1rem;font-size:.68rem}
@media (max-width:720px){.cookie{flex-direction:column;align-items:stretch;left:1rem}.cookie__acts{flex-direction:column}}

/* ---------- LEGAL PAGES ---------- */
.legal{padding-top:clamp(7rem,12vw,9.5rem)}
.legal__grid{display:grid;grid-template-columns:minmax(0,240px) minmax(0,1fr);gap:clamp(2rem,5vw,4.5rem);align-items:start}
.legal__toc{position:sticky;top:96px;border:1px solid var(--line);background:var(--panel);padding:1.4rem}
.legal__toc h2{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);margin-bottom:1rem;font-weight:400}
.legal__toc ol{display:grid;gap:.6rem;counter-reset:toc}
.legal__toc a{font-size:.86rem;color:var(--ink-2);display:flex;gap:.6rem;transition:color 200ms}
.legal__toc a::before{counter-increment:toc;content:counter(toc,decimal-leading-zero);font-family:var(--ff-mono);font-size:.68rem;color:var(--line-2);padding-top:.15rem}
.legal__toc a:hover{color:var(--accent)}
.legal__body h1{font-size:clamp(2.1rem,5.5vw,3.5rem);font-weight:700;letter-spacing:-.04em;line-height:1.02;margin-bottom:1rem}
.legal__body > p.upd{margin-bottom:2.6rem}
.legal__body h2{font-size:clamp(1.2rem,2.4vw,1.55rem);font-weight:700;letter-spacing:-.02em;margin:2.8rem 0 .9rem;scroll-margin-top:100px}
.legal__body h3{font-size:1.02rem;font-weight:600;margin:1.6rem 0 .6rem}
.legal__body p,.legal__body li{color:var(--ink-2);max-width:74ch}
.legal__body p + p{margin-top:.9rem}
.legal__body ul{display:grid;gap:.55rem;margin:.9rem 0 0;padding-left:0}
.legal__body ul li{position:relative;padding-left:1.35rem}
.legal__body ul li::before{content:"";position:absolute;left:0;top:.6rem;width:5px;height:5px;background:var(--accent);rotate:45deg}
.legal__body ul + p,.legal__body ul + h3,.legal__body table + p{margin-top:1.1rem}
.legal__body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--accent)}
.legal__body a:hover{color:var(--accent)}
.legal__body table{width:100%;border-collapse:collapse;margin-top:1.2rem;border:1px solid var(--line)}
.legal__body th,.legal__body td{border:1px solid var(--line);padding:.85rem 1rem;text-align:left;font-size:.9rem;vertical-align:top}
.legal__body th{background:var(--panel-2);font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);font-weight:400}
.legal__body td{color:var(--ink-2)}
.callout{border:1px solid var(--line-2);border-left:2px solid var(--accent);background:var(--panel);padding:1.2rem 1.4rem;margin-top:1.6rem}
.callout p{color:var(--ink-2);font-size:.92rem}
@media (max-width:880px){.legal__grid{grid-template-columns:1fr}.legal__toc{position:static}}

/* ---------- BREADCRUMB ---------- */
.crumb{display:flex;gap:.6rem;align-items:center;margin-bottom:1.6rem;flex-wrap:wrap}
.crumb a,.crumb span{font-family:var(--ff-mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}
.crumb a:hover{color:var(--accent)}
.crumb i{color:var(--line-2);font-style:normal}

/* ---------- SCROLL REVEAL ---------- */
.rv{opacity:1;transform:none}
.js .rv{opacity:0;transform:translateY(24px)}
.js .rv.is-in{opacity:1;transform:none;transition:opacity 700ms var(--ease-out),transform 700ms var(--ease-out)}
.rv-d1{transition-delay:80ms}.rv-d2{transition-delay:160ms}.rv-d3{transition-delay:240ms}

/* ---------- PROGRESS BAR ---------- */
.prog{position:fixed;top:0;left:var(--rail);right:0;height:2px;background:transparent;z-index:calc(var(--z-nav) + 1);pointer-events:none}
.prog i{display:block;height:100%;width:0;background:var(--accent);transition:width 120ms linear}

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .js .rv{opacity:1;transform:none}
  .ticker__track{animation:none}
}

/* ---------- PRINT ---------- */
@media print{
  .nav,.rail,.frame,.grid-bg,.cookie,.prog,.ticker{display:none !important}
  body{background:#fff;color:#000}
  .page{padding-left:0}
}

/* ---------- ANATOMY STAGE (aspect-locked so hotspots align) ---------- */
.anat__stage{
  position:relative;aspect-ratio:600/1000;width:100%;
  max-height:min(56vh,510px);margin-inline:auto;
  max-width:calc(min(56vh,510px) * 0.6);
}
.anat__stage > svg{position:absolute;inset:0;width:100%;height:100%}
.anat__stage .hot{translate:-50% -50%}
.anat__fig figcaption{
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  margin-top:1.2rem;padding-top:1rem;border-top:1px solid var(--line);
}
@media (max-width:900px){.anat__stage{max-height:min(54vh,460px);max-width:calc(min(54vh,460px) * 0.6)}}

/* ---------- late corrections ---------- */
.hero__stats div{display:flex;flex-direction:column-reverse}
.hero__stats .k{margin:.5rem 0 0}
.opt input[type="checkbox"] + .opt__dot{border-radius:0}
.opt input[type="checkbox"] + .opt__dot::after{border-radius:0}
.field.is-invalid .check__box{border-color:var(--danger)}
.legal__body code{font-family:var(--ff-mono);font-size:.88em;background:var(--panel-2);border:1px solid var(--line);padding:.1em .35em;color:var(--ink)}

.js .bento.rv.is-in .cell{animation:cellIn 560ms var(--ease-out) both}
.bento.rv.is-in .cell:nth-child(2){animation-delay:70ms}
.bento.rv.is-in .cell:nth-child(3){animation-delay:140ms}
.bento.rv.is-in .cell:nth-child(4){animation-delay:200ms}
.bento.rv.is-in .cell:nth-child(5){animation-delay:260ms}
.bento.rv.is-in .cell:nth-child(6){animation-delay:320ms}
@keyframes cellIn{from{opacity:0;transform:translateY(18px)}}
@media (prefers-reduced-motion:reduce){.js .bento.rv.is-in .cell{animation:none}}

.js .tl.rv.is-in .tl__item{animation:tlIn 520ms var(--ease-out) both}
.tl.rv.is-in .tl__item:nth-child(2){animation-delay:80ms}
.tl.rv.is-in .tl__item:nth-child(3){animation-delay:160ms}
.tl.rv.is-in .tl__item:nth-child(4){animation-delay:240ms}
.tl.rv.is-in .tl__item:nth-child(5){animation-delay:320ms}
@keyframes tlIn{from{opacity:0;transform:translateX(-14px)}}
@media (prefers-reduced-motion:reduce){.js .tl.rv.is-in .tl__item{animation:none}}

/* consent text is prose, not a field label */
.field label.check{font-family:var(--ff-display);font-size:.88rem;font-weight:400;
  letter-spacing:normal;text-transform:none;color:var(--ink-2);line-height:1.55}