/* ============================================================
   Flux — DoorDash cloud-based agents platform
   Design system: near-black engineering-tool aesthetic,
   DoorDash red #EB1700, Space Grotesk display / Inter UI /
   IBM Plex Mono labels.
   ============================================================ */

:root{
  --bg:#070708;
  --bg-2:#0c0c0e;
  --surface:#111114;
  --surface-2:#15151a;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#f4f3f1;
  --muted:#a5a19b;
  --muted-2:#6f6c66;
  --red:#EB1700;
  --red-bright:#ff3b22;
  --red-soft:rgba(235,23,0,.14);
  --red-line:rgba(235,23,0,.4);
  --ok:#3ddc84;
  --display:"Space Grotesk","Inter",system-ui,sans-serif;
  --ui:"Inter",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;
  --wrap:1180px;
  --radius:16px;
  --ease:cubic-bezier(.22,.68,.28,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--ui);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--red);color:#fff}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--red-bright);
  outline-offset:3px;
  border-radius:4px;
}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,4vw,48px)}

.skip-link{
  position:fixed;top:-60px;left:16px;z-index:200;
  background:var(--red);color:#fff;font-family:var(--mono);font-size:13px;
  padding:10px 16px;border-radius:8px;transition:top .2s var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- typography helpers ---------- */
.eyebrow{
  font-family:var(--mono);font-size:12.5px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  display:flex;align-items:center;gap:12px;margin-bottom:22px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--red);flex:none}
.eyebrow--red{color:var(--red-bright)}
.h2{
  font-family:var(--display);font-weight:700;
  font-size:clamp(30px,4.6vw,54px);line-height:1.06;
  letter-spacing:-.025em;margin-bottom:26px;
}
.lede{font-size:clamp(17px,1.6vw,20px);color:var(--muted);max-width:760px;margin-bottom:56px}
.lede--center{margin-left:auto;margin-right:auto}
.lede b,.pcard b,.deep b{color:var(--text);font-weight:600}
.br-lg{display:none}
@media(min-width:900px){.br-lg{display:block}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:14px;font-weight:500;letter-spacing:.02em;
  padding:14px 24px;border-radius:10px;border:1px solid transparent;
  transition:transform .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  cursor:pointer;white-space:nowrap;
}
.btn--primary{background:var(--red);color:#fff;box-shadow:0 8px 32px -8px rgba(235,23,0,.55)}
.btn--primary:hover{background:var(--red-bright);transform:translateY(-2px);box-shadow:0 14px 40px -8px rgba(235,23,0,.65)}
.btn--ghost{border-color:var(--line-strong);color:var(--text)}
.btn--ghost:hover{border-color:var(--red);color:var(--red-bright);transform:translateY(-2px)}
.btn--xl{padding:18px 32px;font-size:15px}

/* ---------- reveal ---------- */
[data-reveal]{
  opacity:0;transform:translateY(28px);
  transition:opacity .8s var(--ease),transform .8s var(--ease);
  transition-delay:var(--d,0s);
}
[data-reveal].in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
}

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:fixed;inset:0 0 auto;z-index:100;
  transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(7,7,8,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav__inner{
  max-width:var(--wrap);margin:0 auto;
  padding:0 clamp(20px,4vw,48px);
  height:72px;display:flex;align-items:center;gap:32px;
}
.nav__brand{display:flex;align-items:center;gap:11px;color:var(--text)}
.nav__mark{width:28px;height:28px;color:var(--red);flex:none}
.nav__word{font-family:var(--mono);font-size:14.5px;font-weight:500;letter-spacing:.04em}
.nav__word em{font-style:normal;color:var(--red)}
.nav__links{display:flex;gap:6px;margin-left:auto}
.nav__links a{
  font-family:var(--mono);font-size:13px;color:var(--muted);
  padding:8px 13px;border-radius:8px;
  transition:color .2s,background .2s;
}
.nav__links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav__links a.is-active{color:var(--red-bright)}
.nav__actions{display:flex;align-items:center;gap:14px}
.nav__cta{padding:10px 18px;font-size:12.5px}
.nav__burger{
  display:none;width:44px;height:44px;border:1px solid var(--line-strong);
  background:transparent;border-radius:10px;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:6px;
}
.nav__burger span{display:block;width:18px;height:2px;background:var(--text);transition:transform .3s var(--ease),opacity .2s}
.nav__burger[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.nav__burger[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}

@media(max-width:900px){
  .nav__links{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;gap:4px;padding:16px clamp(20px,4vw,48px) 28px;
    background:rgba(7,7,8,.97);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .25s var(--ease),transform .25s var(--ease);
  }
  .nav__links.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav__links a{font-size:15px;padding:12px 14px}
  .nav__cta{display:none}
  .nav__burger{display:flex}
  .nav__actions{margin-left:auto}
  .nav__links{margin-left:0}
}
@media(min-width:901px){.nav__actions{margin-left:0}.nav__links{margin-left:auto}}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;min-height:100svh;
  display:flex;flex-direction:column;justify-content:center;
  overflow:hidden;background:#050506;
}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%}
.hero__still{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.5;display:none;
}
@media (prefers-reduced-motion:reduce){
  .hero__canvas{display:none}
  .hero__still{display:block}
}
.hero__scrim{
  position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(90deg,rgba(5,5,6,.92) 0%,rgba(5,5,6,.72) 34%,rgba(5,5,6,.18) 62%,rgba(5,5,6,.45) 100%),
    linear-gradient(0deg,var(--bg) 0%,transparent 26%);
}
.hero__inner{
  position:relative;z-index:2;
  max-width:var(--wrap);margin:0 auto;width:100%;
  padding:130px clamp(20px,4vw,48px) 90px;
}
.hero__title{
  font-family:var(--display);font-weight:700;
  font-size:clamp(40px,7.2vw,88px);line-height:1.0;letter-spacing:-.03em;
  margin-bottom:28px;
}
.hero__red{
  color:var(--red);
  text-shadow:0 0 42px rgba(235,23,0,.45);
}
.hero__sub{font-size:clamp(17px,1.8vw,21px);color:#cfcbC6;color:#cfcbc6;max-width:640px;margin-bottom:40px}
.hero__sub strong{color:#fff;font-weight:600}
.hero__ctas{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:64px}

.hero__stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;max-width:980px;
}
.hero__stat{background:rgba(10,10,12,.66);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:24px 26px}
.hero__stat dd{
  font-family:var(--display);font-weight:700;font-size:clamp(26px,2.8vw,38px);
  letter-spacing:-.02em;color:#fff;
  /* bottom-anchor within the equal-height grid cells so all numbers share
     one line regardless of how deep each label wraps */
  margin-top:auto;padding-top:14px;
}
.hero__stat dd .plus{color:var(--red-bright)}
.hero__stat dt{
  font-family:var(--mono);font-size:11.5px;line-height:1.5;
  letter-spacing:.08em;text-transform:uppercase;color:var(--muted);order:-1;
}
.hero__stat{display:flex;flex-direction:column}
.hero__stat-when{color:var(--muted-2);letter-spacing:.06em}
@media(max-width:820px){
  .hero__stats{grid-template-columns:1fr 1fr}
  .hero__ctas .btn{width:100%;justify-content:center}
}
.hero__scroll{
  position:absolute;z-index:3;bottom:26px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted-2);transition:color .2s;
}
.hero__scroll:hover{color:var(--red-bright)}
.hero__scroll-line{width:1px;height:44px;background:linear-gradient(var(--red),transparent);animation:drip 2.2s var(--ease) infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}55%{transform:scaleY(1);transform-origin:top}56%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
@media (prefers-reduced-motion:reduce){.hero__scroll-line{animation:none}}

/* ============================================================
   SECTIONS — shared
   ============================================================ */
.section{padding:clamp(90px,10vw,150px) 0;position:relative}
.section--alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- problem cards ---------- */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:72px}
@media(max-width:960px){.cards3{grid-template-columns:1fr}}
.pcard{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 30px 30px;position:relative;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease);
}
.pcard::after{
  content:"";position:absolute;inset:auto 0 0;height:2px;
  background:linear-gradient(90deg,var(--red),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease);
}
.pcard:hover{transform:translateY(-6px);border-color:var(--red-line);box-shadow:0 24px 60px -24px rgba(0,0,0,.8)}
.pcard:hover::after{transform:none}
.pcard__icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:var(--red-soft);color:var(--red-bright);margin-bottom:22px;
}
.pcard__icon svg{width:26px;height:26px}
.pcard h3{font-family:var(--display);font-size:21px;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
.pcard p{color:var(--muted);font-size:15.5px}
.pcard__tag{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--red-bright);
}

/* ---------- before / after ---------- */
.ba{
  display:grid;grid-template-columns:1fr auto 1fr;gap:28px;align-items:stretch;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);padding:40px clamp(24px,4vw,48px);
}
.ba__label{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px}
.ba__col--before .ba__label{color:var(--muted-2)}
.ba__col--after .ba__label{color:var(--red-bright)}
.ba ul{list-style:none;display:grid;gap:12px}
.ba li{position:relative;padding-left:26px;font-size:15.5px;color:var(--muted)}
.ba__col--before li::before{content:"✕";position:absolute;left:0;color:var(--muted-2);font-size:13px;top:2px}
.ba__col--after li{color:var(--text)}
.ba__col--after li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:8px;
  border-left:2px solid var(--red-bright);border-bottom:2px solid var(--red-bright);
  transform:rotate(-45deg);
}
.ba__arrow{display:grid;place-items:center;color:var(--red)}
.ba__arrow svg{width:64px;height:24px}
@media(max-width:820px){
  .ba{grid-template-columns:1fr}
  .ba__arrow svg{transform:rotate(90deg);margin:0 auto}
}

/* ---------- tradeoff ---------- */
.trade{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:center;margin-bottom:64px}
@media(max-width:760px){.trade{grid-template-columns:1fr}.trade__or{justify-self:center}}
.trade__path{
  border:1px dashed var(--red-line);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(235,23,0,.06),transparent);
  padding:28px 28px 26px;
}
.trade__opt{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-2);margin-bottom:12px}
.trade__desc{font-size:16.5px;margin-bottom:16px}
.trade__verdict{font-family:var(--mono);font-size:13px;color:var(--red-bright)}
.trade__or{font-family:var(--display);font-size:26px;font-weight:700;color:var(--muted-2)}
.pull{
  border-left:3px solid var(--red);padding:6px 0 6px 32px;margin:0 0 44px;max-width:880px;
}
.pull p{font-family:var(--display);font-size:clamp(21px,2.4vw,30px);font-weight:500;line-height:1.4;letter-spacing:-.01em}
.pull b{color:var(--red-bright);font-weight:700}
.pull cite{display:block;margin-top:16px;font-family:var(--mono);font-style:normal;font-size:12.5px;letter-spacing:.08em;color:var(--muted-2)}

/* ============================================================
   FLOW (animated pipeline)
   ============================================================ */
.flow{margin:10px 0 70px}
.flow__track{
  list-style:none;display:flex;align-items:stretch;gap:0;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);padding:26px 20px;
}
.flow__node{flex:1 1 0;min-width:0;display:flex}
.flow__node .flow__chip{flex:1 1 auto;min-width:0}
.flow__chip{
  display:flex;flex-direction:column;gap:5px;justify-content:center;text-align:left;
  background:var(--surface-2);border:1px solid var(--line-strong);border-radius:13px;
  padding:15px 14px;min-width:0;color:var(--text);cursor:pointer;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s;
  font-family:var(--ui);
}
.flow__chip:hover,.flow__chip:hover{
  transform:translateY(-4px);border-color:var(--red);background:#1a1214;
  box-shadow:0 0 0 1px var(--red),0 16px 40px -16px rgba(235,23,0,.5);
}
.flow__chip--done{cursor:default;border-color:rgba(61,220,132,.35)}
.flow__chip--done:hover{transform:none;border-color:rgba(61,220,132,.35);box-shadow:none;background:var(--surface-2)}
.flow__num{font-family:var(--mono);font-size:11px;color:var(--red-bright);letter-spacing:.1em}
.flow__chip--done .flow__num{color:var(--ok)}
.flow__name{font-family:var(--display);font-weight:700;font-size:16px;line-height:1.15;letter-spacing:-.01em}
.flow__hint{font-family:var(--mono);font-size:10.5px;color:var(--muted-2);letter-spacing:.02em;line-height:1.4}
.flow__edge{flex:0 1 48px;min-width:22px;display:flex;align-items:center}
.flow__edge svg{width:100%;height:24px;overflow:visible}
.flow__path{
  stroke:var(--line-strong);stroke-width:2;fill:none;
  stroke-dasharray:5 7;
  animation:edgeflow 1.4s linear infinite;
}
@keyframes edgeflow{to{stroke-dashoffset:-12}}
.flow__pulse{
  stroke:var(--red-bright);stroke-width:2.6;fill:none;stroke-linecap:round;
  stroke-dasharray:10 88;
  filter:drop-shadow(0 0 6px rgba(255,59,34,.9));
  animation:pulse 2.6s var(--ease) infinite;
  animation-delay:var(--pd,0s);
}
.flow__edge:nth-of-type(4) .flow__pulse{--pd:.5s}
.flow__edge:nth-of-type(6) .flow__pulse{--pd:1s}
.flow__edge:nth-of-type(8) .flow__pulse{--pd:1.5s}
.flow__edge:nth-of-type(10) .flow__pulse{--pd:2s}
@keyframes pulse{0%{stroke-dashoffset:98;opacity:0}12%{opacity:1}88%{opacity:1}100%{stroke-dashoffset:0;opacity:0}}
.flow__caption{margin-top:18px;font-size:14px;color:var(--muted-2);font-family:var(--mono)}
.flow__caption-mut{color:var(--muted)}
@media (prefers-reduced-motion:reduce){.flow__pulse,.flow__path{animation:none}.flow__pulse{opacity:0}}

@media(max-width:1000px){
  .flow__track{flex-direction:column;padding:22px}
  .flow__edge{flex:none;min-height:34px}
  .flow__edge svg{height:34px;width:24px;margin:0 auto}
  .flow__edge svg path{d:path("M12 0v34")}
  .flow__chip{width:100%}
}

/* ============================================================
   DEEP DIVE TABS
   ============================================================ */
.deep{border:1px solid var(--line);border-radius:20px;background:var(--bg-2);overflow:hidden}
.deep__tabs{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--line)}
.deep__tabs [role=tab]{
  flex:1 1 auto;display:flex;align-items:center;gap:10px;justify-content:center;
  padding:19px 14px;background:transparent;border:none;cursor:pointer;
  font-family:var(--display);font-size:15.5px;font-weight:700;color:var(--muted);
  border-bottom:2px solid transparent;margin-bottom:-1px;
  transition:color .25s,background .25s,border-color .25s;
  white-space:nowrap;
}
.deep__tabs [role=tab]:hover{color:var(--text);background:rgba(255,255,255,.03)}
.deep__tabs [role=tab][aria-selected="true"]{color:#fff;border-bottom-color:var(--red);background:var(--red-soft)}
.deep__tabnum{font-family:var(--mono);font-size:11px;font-weight:500;color:var(--red-bright)}
@media(max-width:640px){.deep__tabs [role=tab]{flex-basis:50%;font-size:14px;padding:14px 8px}}

.deep__panel{padding:clamp(28px,4vw,52px);display:none}
.deep__panel.is-active{display:block;animation:panelin .5s var(--ease)}
@keyframes panelin{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.deep__panel.is-active{animation:none}}
.deep__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,60px);align-items:start}
@media(max-width:900px){.deep__grid{grid-template-columns:1fr}}
.deep__panel h3{font-family:var(--display);font-size:clamp(22px,2.4vw,28px);font-weight:700;letter-spacing:-.015em;margin-bottom:18px}
.deep__panel p{color:var(--muted);font-size:16px;margin-bottom:16px}
.ticks{list-style:none;margin-top:22px;display:grid;gap:11px}
.ticks li{position:relative;padding-left:28px;font-size:15px;color:var(--text)}
.ticks li::before{
  content:"";position:absolute;left:0;top:6px;width:16px;height:9px;
  border-left:2px solid var(--red-bright);border-bottom:2px solid var(--red-bright);transform:rotate(-45deg);
}

/* sandbox SLO */
.slo{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:30px}
.slo__head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.slo__title{font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.slo__badge{
  font-family:var(--mono);font-size:13px;color:var(--muted);
  border:1px solid var(--red-line);background:var(--red-soft);border-radius:8px;padding:7px 13px;
}
.slo__badge b{color:var(--red-bright);font-size:16px}
.slo__bar{display:flex;gap:8px;margin-bottom:12px}
.slo__seg{
  position:relative;height:58px;border-radius:10px;flex:1;
  background:var(--surface-2);border:1px solid var(--line-strong);
  overflow:hidden;display:flex;align-items:flex-end;
}
.slo__seg::before{
  content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(235,23,0,.28),rgba(235,23,0,.6));
  transform:scaleX(0);transform-origin:left;
}
.slo.is-live .slo__seg::before{animation:segfill .7s var(--ease) forwards;animation-delay:calc(var(--seg)*.28s)}
@keyframes segfill{to{transform:none}}
.slo__seg i{
  position:relative;z-index:1;font-style:normal;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.04em;color:#fff;padding:8px 10px;line-height:1.3;
}
.slo__note{font-size:13.5px;color:var(--muted-2)}
@media (prefers-reduced-motion:reduce){.slo__seg::before{transform:none;animation:none !important}}

/* gateway mini-flow */
.gate{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:30px;display:grid;gap:16px;align-content:start}
.gate__row{display:flex;align-items:center;gap:12px}
.gate__chip{
  font-family:var(--mono);font-size:12.5px;padding:10px 14px;border-radius:9px;
  border:1px solid var(--line-strong);background:var(--surface-2);flex:1;text-align:center;
}
.gate__chip--in{color:var(--red-bright);border-color:var(--red-line)}
.gate__chip--core{color:var(--text)}
.gate__chip--ok{color:var(--ok);border-color:rgba(61,220,132,.35)}
.gate__chip--dim{opacity:.65}
.gate__arr{width:34px;height:14px;color:var(--muted-2);flex:none}
.gate__cap{font-size:13px;color:var(--muted-2);border-top:1px dashed var(--line);padding-top:16px}

/* playbook code */
.code{
  border:1px solid var(--line);border-radius:var(--radius);background:#0a0a0d;overflow:hidden;
  font-size:12.5px;
}
.code__bar{
  display:flex;align-items:center;gap:14px;padding:13px 18px;
  border-bottom:1px solid var(--line);font-family:var(--mono);font-size:12.5px;color:var(--muted);
}
.code__dots{width:44px;height:10px;flex:none;
  background:
    radial-gradient(circle 4px at 5px 5px,#ff5f57 96%,transparent),
    radial-gradient(circle 4px at 21px 5px,#febc2e 96%,transparent),
    radial-gradient(circle 4px at 37px 5px,#28c840 96%,transparent);
}
.code__tag{margin-left:auto;color:var(--muted-2);font-size:11px}
.code pre{padding:18px;overflow-x:auto}
.code code{font-family:var(--mono);line-height:1.8;color:#d8d4cf;white-space:pre}
.c-k{color:var(--red-bright);font-weight:500}
.c-s{color:#e8e6e3}
.c-c{color:var(--muted-2);font-style:italic}
.c-ok{color:var(--ok)}

/* surfaces mini list */
.surf-mini{display:grid;gap:12px}
.surf-mini__item{
  display:flex;align-items:center;gap:14px;
  border:1px solid var(--line);border-radius:12px;background:var(--surface);
  padding:16px 18px;font-family:var(--display);font-weight:700;font-size:16px;
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.surf-mini__item:hover{transform:translateX(6px);border-color:var(--red-line)}
.surf-mini__item em{margin-left:auto;font-family:var(--mono);font-style:normal;font-weight:400;font-size:11.5px;color:var(--muted-2);text-align:right}
.surf-mini__ico{color:var(--red-bright);font-family:var(--mono);font-size:16px;width:24px;text-align:center;flex:none}

/* ============================================================
   SURFACES SECTION
   ============================================================ */
.surface{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.scard{
  grid-column:span 2;
  border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);
  padding:28px;display:flex;flex-direction:column;gap:14px;
  transition:transform .35s var(--ease),border-color .35s var(--ease);
}
.scard:hover{transform:translateY(-5px);border-color:var(--red-line)}
.scard:nth-child(4){grid-column:2/span 2}
.scard:nth-child(5){grid-column:span 2}
@media(max-width:1020px){.scard{grid-column:span 3 !important}.scard:nth-child(5){grid-column:2/span 4 !important}}
@media(max-width:680px){.scard{grid-column:1/-1 !important}}
.scard header{display:flex;align-items:center;gap:13px}
.scard__ico{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:var(--red-soft);color:var(--red-bright);font-family:var(--mono);font-size:17px;
}
.scard h3{font-family:var(--display);font-size:20px;font-weight:700}
.scard>p{color:var(--muted);font-size:15px}
.scard__demo{
  margin-top:auto;border:1px solid var(--line);border-radius:12px;background:#0a0a0d;
  padding:14px 16px;display:grid;gap:9px;
}
.scard__demo-line{font-family:var(--mono);font-size:12.5px;color:var(--muted);line-height:1.55}
.scard__demo-line b{color:var(--text);font-weight:500}
.scard__demo-line--flux b{color:var(--red-bright)}
.scard__demo-line--user b{color:#7fb3ff}
.badge-check{color:var(--ok);font-weight:700}
.scard__cap{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2)}

/* ============================================================
   SCALE / BIG NUMBERS / BARS
   ============================================================ */
.bignum{
  display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-bottom:26px;
}
@media(max-width:960px){.bignum{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.bignum{grid-template-columns:1fr}}
.bignum__item{border-top:2px solid var(--red);padding-top:22px}
.bignum__item dd{
  font-family:var(--display);font-weight:700;letter-spacing:-.03em;
  font-size:clamp(44px,5vw,68px);line-height:1;font-variant-numeric:tabular-nums;
}
.bignum__plus{color:var(--red-bright)}
.bignum__item dt{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:14px;line-height:1.55}
.bignum__note{color:var(--muted);font-size:16px;margin-bottom:80px}
.bignum__note b{color:var(--text)}

.usage{display:grid;grid-template-columns:300px 1fr;gap:clamp(28px,4vw,64px);align-items:start}
@media(max-width:900px){.usage{grid-template-columns:1fr}}
.usage__head h3{font-family:var(--display);font-size:clamp(22px,2.2vw,27px);font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
.usage__head p{color:var(--muted);font-size:14.5px}
.bars{display:grid;gap:14px}
.bars__row{display:grid;grid-template-columns:190px 1fr;gap:18px;align-items:center}
@media(max-width:560px){.bars__row{grid-template-columns:1fr;gap:6px}}
.bars__label{font-family:var(--mono);font-size:12.5px;color:var(--muted);text-align:right;letter-spacing:.02em}
@media(max-width:560px){.bars__label{text-align:left}}
.bars__track{display:block;height:26px;background:var(--surface);border:1px solid var(--line);border-radius:7px;overflow:hidden}
.bars__fill{
  display:block;height:100%;width:calc(var(--w)*1%);
  background:linear-gradient(90deg,#8f0e00,var(--red) 55%,var(--red-bright));
  border-radius:6px;
  transform:scaleX(0);transform-origin:left;
  transition:transform 1.1s var(--ease);
  transition-delay:var(--bd,0s);
}
.bars.is-live .bars__fill{transform:none}
.bars__row:nth-child(1){--bd:.05s}.bars__row:nth-child(2){--bd:.12s}.bars__row:nth-child(3){--bd:.19s}
.bars__row:nth-child(4){--bd:.26s}.bars__row:nth-child(5){--bd:.33s}.bars__row:nth-child(6){--bd:.4s}
.bars__row:nth-child(7){--bd:.47s}.bars__row:nth-child(8){--bd:.54s}.bars__row:nth-child(9){--bd:.61s}
.bars__caption{grid-column:1/-1;margin-top:6px;font-size:13.5px;color:var(--muted-2)}
.bars__caption a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.bars__caption a:hover{color:var(--red-bright)}
@media (prefers-reduced-motion:reduce){.bars__fill{transform:none;transition:none}}

/* ============================================================
   LESSONS ARC
   ============================================================ */
.arc{list-style:none;max-width:860px;position:relative;padding-left:2px}
.arc::before{
  content:"";position:absolute;left:29px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(var(--red),var(--red-line) 60%,var(--line));
}
.arc__step{position:relative;display:flex;gap:30px;padding:34px 0}
.arc__num{
  flex:none;width:60px;height:60px;border-radius:50%;display:grid;place-items:center;
  font-family:var(--mono);font-size:15px;font-weight:500;color:var(--red-bright);
  background:var(--bg-2);border:1px solid var(--red-line);
  box-shadow:0 0 0 6px var(--bg-2);position:relative;z-index:1;
}
.section--alt .arc__num{box-shadow:0 0 0 6px var(--bg-2)}
.arc__body h3{font-family:var(--display);font-size:clamp(21px,2.2vw,26px);font-weight:700;letter-spacing:-.015em;margin:12px 0 14px}
.arc__body p{color:var(--muted);font-size:16px;max-width:640px}
.arc__from{
  margin-top:16px;font-family:var(--mono);font-size:12.5px;color:var(--red-bright);
  letter-spacing:.04em;
}
.arc__body b{color:var(--text)}

/* ============================================================
   NEXT
   ============================================================ */
.next{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:980px}
@media(max-width:760px){.next{grid-template-columns:1fr}}
.next__card{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);
  padding:34px 32px;transition:transform .35s var(--ease),border-color .35s var(--ease);
}
.next__card:hover{transform:translateY(-5px);border-color:var(--red-line)}
.next__card h3{font-family:var(--display);font-size:21px;font-weight:700;margin-bottom:12px}
.next__card h3::before{content:"→ ";color:var(--red-bright)}
.next__card p{color:var(--muted);font-size:15.5px}
.next__card a{color:var(--text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--red-line)}
.next__card a:hover{color:var(--red-bright)}

/* ============================================================
   CLOSING
   ============================================================ */
.closing{
  padding:clamp(110px,13vw,190px) 0 clamp(80px,9vw,130px);
  position:relative;text-align:center;overflow:hidden;
  background:
    radial-gradient(90% 60% at 50% 108%,rgba(235,23,0,.30),transparent 60%),
    var(--bg-2);
  border-top:1px solid var(--line);
}
.closing .eyebrow{justify-content:center}
.closing .eyebrow::before{display:none}
.closing__title{
  font-family:var(--display);font-weight:700;letter-spacing:-.03em;
  font-size:clamp(34px,5.4vw,68px);line-height:1.05;
  max-width:900px;margin:0 auto 30px;
}
.closing__cta{margin-top:48px}
.closing__byline{margin-top:22px;font-family:var(--mono);font-size:12.5px;letter-spacing:.05em;color:var(--muted-2)}
.pubfigs{margin-top:90px;text-align:left}
.pubfigs__label{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted-2);margin-bottom:20px;text-align:center;
}
.pubfigs__grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}
@media(max-width:820px){.pubfigs__grid{grid-template-columns:1fr}}
.pubfig{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
}
.pubfig img{width:100%;height:auto}
.pubfig figcaption{
  background:var(--surface);color:var(--muted);font-family:var(--mono);font-size:12px;
  padding:13px 18px;border-top:1px solid var(--line);letter-spacing:.03em;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{border-top:1px solid var(--line);padding:60px 0 70px;background:var(--bg)}
.footer__inner{display:grid;grid-template-columns:1.4fr 1fr;gap:50px;align-items:start}
@media(max-width:760px){.footer__inner{grid-template-columns:1fr}}
.footer__brand{display:flex;gap:16px;align-items:flex-start}
.footer__brand p{font-size:13.5px;color:var(--muted-2);line-height:1.7;max-width:520px}
.footer__brand b{color:var(--muted)}
.footer__brand a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.footer__brand a:hover{color:var(--red-bright)}
.footer__links{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:flex-end}
@media(max-width:760px){.footer__links{justify-content:flex-start}}
.footer__links a{font-family:var(--mono);font-size:12.5px;color:var(--muted)}
.footer__links a:hover{color:var(--red-bright)}