/* Vulcan Fuels — concept site */

:root{
  --ink:#0B0B0B;
  --panel:#131313;
  --panel-2:#181212;
  --line:rgba(255,229,229,.10);
  --line-soft:rgba(255,229,229,.06);
  --red:#DF1A25;
  --red-deep:#940109;
  --red-text:#FF4A4A;
  --white:#fff;
  --muted:rgba(255,255,255,.62);
  --muted-2:rgba(255,255,255,.44);
  --display:"Plus Jakarta Sans",Helvetica,Arial,sans-serif;
  --body:Roboto,Helvetica,Arial,sans-serif;
  --wrap:1240px;
  --pad:clamp(20px,5vw,64px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--muted);
  font-family:var(--body);
  font-weight:300;
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
h1,h2,h3{font-family:var(--display);color:var(--white);font-weight:600;line-height:1.06;margin:0;letter-spacing:-.015em}
p{margin:0}
a{color:inherit}

::selection{background:var(--red);color:#fff}

:focus-visible{
  outline:2px solid var(--red-text);
  outline-offset:3px;
  border-radius:2px;
}

.skip{
  position:absolute;left:16px;top:-60px;z-index:200;
  background:var(--red);color:#fff;padding:12px 20px;
  font-family:var(--display);font-weight:600;font-size:14px;
  text-decoration:none;transition:top .3s var(--ease);
}
.skip:focus{top:16px}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}

.eyebrow{
  font-family:var(--body);
  font-size:12px;font-weight:400;letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted-2);
  display:flex;align-items:center;gap:14px;
  margin-bottom:26px;
}
.eyebrow::before{
  content:"";width:26px;height:1px;background:var(--red);flex:none;
}

.h-display{
  font-size:clamp(32px,4.6vw,54px);
  font-weight:400;
  letter-spacing:-.02em;
  line-height:1.1;
}
.h-display .dot{color:var(--red)}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .5s var(--ease),border-color .5s var(--ease),backdrop-filter .5s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  background:rgba(11,11,11,.86);
  backdrop-filter:saturate(140%) blur(14px);
  border-bottom-color:var(--line);
}
.nav.is-open{background:var(--ink);backdrop-filter:none;border-bottom-color:transparent}
.nav__inner{
  max-width:var(--wrap);margin-inline:auto;
  padding:18px var(--pad);
  display:flex;align-items:center;gap:28px;
}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--red)}
.brand__mark{width:26px;height:26px;flex:none}
.brand__type{
  font-family:var(--display);font-weight:700;font-size:15px;
  letter-spacing:.16em;color:var(--white);
}
.brand__thin{font-weight:300;color:var(--muted);margin-left:.45em}

.nav__links{margin-left:auto;display:flex;gap:34px}
.nav__links a{
  font-family:var(--display);font-size:14px;font-weight:500;
  letter-spacing:.02em;color:rgba(255,255,255,.78);text-decoration:none;
  padding:6px 0;position:relative;transition:color .35s var(--ease);
}
.nav__links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--red);transform:scaleX(0);transform-origin:left;
  transition:transform .45s var(--ease);
}
.nav__links a:hover{color:#fff}
.nav__links a:hover::after{transform:scaleX(1)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--display);font-size:14px;font-weight:600;letter-spacing:.02em;
  padding:13px 26px;text-decoration:none;border:1px solid transparent;
  transition:background .4s var(--ease),color .4s var(--ease),border-color .4s var(--ease),transform .4s var(--ease);
}
.btn--solid{background:var(--red);color:#fff}
.btn--solid:hover{background:#f22d38;transform:translateY(-2px)}
.btn--ghost{border-color:rgba(255,255,255,.28);color:#fff}
.btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.06);transform:translateY(-2px)}

.burger{
  display:none;background:none;border:0;padding:10px;cursor:pointer;
  flex-direction:column;gap:6px;margin-left:auto;
}
.burger span{display:block;width:24px;height:2px;background:#fff;transition:transform .4s var(--ease),opacity .3s var(--ease)}
.burger[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}

.drawer{
  position:fixed;inset:64px 0 auto 0;z-index:99;
  background:var(--ink);border-bottom:1px solid var(--line);
  animation:drop .45s var(--ease) both;
}
@keyframes drop{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
.drawer__links{display:flex;flex-direction:column;padding:8px var(--pad) 26px}
.drawer__links a{
  font-family:var(--display);font-size:19px;font-weight:500;color:#fff;
  text-decoration:none;padding:15px 0;border-bottom:1px solid var(--line-soft);
}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100svh;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding-top:140px;overflow:hidden;
}
.hero__media{position:absolute;inset:0;z-index:0}
.hero__media img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(1) contrast(1.12) brightness(.62);
  animation:slowzoom 26s var(--ease) forwards;
}
@keyframes slowzoom{from{transform:scale(1.1)}to{transform:scale(1)}}
.hero__tint{
  position:absolute;inset:0;
  background:linear-gradient(140deg,var(--red-deep),#2a0407 55%,#120303);
  mix-blend-mode:color;opacity:.34;
}
.hero__scrim{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(9,7,7,.9) 0%,rgba(9,7,7,.6) 38%,rgba(9,7,7,.05) 78%),
    linear-gradient(180deg,rgba(11,11,11,.82) 0%,rgba(11,11,11,.2) 30%,rgba(11,11,11,.74) 76%,var(--ink) 100%);
}

.hero__body{position:relative;z-index:2;max-width:var(--wrap);margin-inline:auto;width:100%;padding:0 var(--pad) 72px}
.hero h1{
  font-size:clamp(46px,8.4vw,110px);
  font-weight:600;text-transform:uppercase;letter-spacing:-.03em;line-height:.94;
  margin-bottom:28px;
}
.hero h1 em{font-style:normal;color:var(--red);display:inline-block}
.hero__lede{max-width:52ch;font-size:clamp(16px,1.5vw,19px);color:rgba(255,255,255,.8)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}

.hero__foot{
  position:relative;z-index:2;width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:0 var(--pad) 40px;
  display:flex;align-items:center;gap:clamp(20px,5vw,60px);
}
.hero__stat{display:flex;align-items:baseline;gap:10px}
.hero__stat b{font-family:var(--display);font-size:34px;font-weight:600;color:#fff;line-height:1}
.hero__stat span{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.hero__rule{flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--line) 0 5px,transparent 5px 12px)}

/* ---------- applications ---------- */
section{position:relative}
.apps{padding:clamp(90px,12vw,160px) 0 clamp(70px,9vw,120px)}
.apps__grid{display:grid;gap:clamp(28px,3vw,40px);grid-template-columns:repeat(3,1fr);margin-top:clamp(46px,6vw,80px)}

.app{
  background:var(--panel);border:1px solid var(--line-soft);
  display:flex;flex-direction:column;
  transition:border-color .55s var(--ease),transform .55s var(--ease),background .55s var(--ease);
}
.app:hover{border-color:rgba(223,26,37,.42);transform:translateY(-6px);background:var(--panel-2)}
.app__media{position:relative;aspect-ratio:4/3;overflow:hidden}
.app__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(148,1,9,.3),rgba(11,11,11,.1));
  mix-blend-mode:color;
  transition:opacity .8s var(--ease);
}
.app:hover .app__media::after{opacity:.55}
.app__media img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(1) contrast(1.08) brightness(.72);
  transition:transform 1.1s var(--ease),filter .8s var(--ease);
}
.app:hover .app__media img{transform:scale(1.06);filter:grayscale(1) contrast(1.12) brightness(.86)}
.app__body{padding:clamp(24px,2.4vw,34px);display:flex;flex-direction:column;gap:16px;flex:1}
.app__kicker{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--red-text)}
.app h3{font-size:clamp(21px,1.9vw,26px);font-weight:400;line-height:1.18}
.app p{font-size:15.5px}
.link{
  margin-top:auto;align-self:flex-start;
  font-family:var(--display);font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:#fff;text-decoration:none;padding-bottom:4px;border-bottom:1px solid rgba(255,255,255,.28);
  transition:border-color .4s var(--ease),color .4s var(--ease);
}
.link:hover{color:var(--red-text);border-color:var(--red)}

/* ---------- process ---------- */
.process{padding:clamp(70px,9vw,120px) 0;border-top:1px solid var(--line-soft)}
.steps{list-style:none;margin:clamp(46px,6vw,74px) auto 0;display:grid;gap:0;grid-template-columns:repeat(4,1fr)}
.step{padding:30px 26px 34px 0;border-top:1px solid var(--line);position:relative}
.step + .step{padding-left:30px}
.step + .step::before{
  content:"";position:absolute;left:0;top:0;bottom:26px;width:1px;
  background:repeating-linear-gradient(180deg,var(--line) 0 4px,transparent 4px 11px);
}
.step__n{
  display:block;font-family:var(--display);font-size:12px;font-weight:600;
  letter-spacing:.2em;color:var(--red-text);margin-bottom:20px;
}
.step h3{font-size:22px;font-weight:500;margin-bottom:12px}
.step p{font-size:15px}

.loop{
  margin-top:clamp(60px,7vw,100px);
  display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(30px,5vw,70px);align-items:center;
  background:var(--panel);border:1px solid var(--line-soft);
  padding:clamp(30px,4vw,58px);
}
.loop h3{font-size:clamp(22px,2.3vw,30px);font-weight:400;line-height:1.2;margin-bottom:18px}
.loop__figure svg{width:100%;max-width:300px;margin-inline:auto;display:block}
.fig__big{font-family:var(--display);font-size:44px;font-weight:600;fill:#fff}
.fig__small{font-family:Roboto,sans-serif;font-size:11px;letter-spacing:.24em;fill:rgba(255,255,255,.5)}
.orbit{transform-origin:160px 160px;animation:spin 14s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- deployment ---------- */
.deploy{padding:clamp(70px,9vw,120px) 0;border-top:1px solid var(--line-soft)}
.deploy__lede{max-width:56ch;margin-top:22px;font-size:17px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,3vw,40px);margin-top:clamp(46px,6vw,76px)}
.split__card{border-top:1px solid var(--red);padding-top:26px}
.split__media{aspect-ratio:16/10;overflow:hidden;position:relative;margin-bottom:26px}
.split__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(148,1,9,.26),rgba(11,11,11,.4));mix-blend-mode:color}
.split__media img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) brightness(.58) contrast(1.14);transition:transform 1.2s var(--ease)}
.split__card:hover .split__media img{transform:scale(1.05)}
.split__card h3{font-size:clamp(24px,2.4vw,32px);font-weight:400;margin-bottom:10px}
.split__claim{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--red-text);margin-bottom:16px}

/* ---------- backers ---------- */
.backers{padding:clamp(70px,9vw,120px) 0;border-top:1px solid var(--line-soft)}
.backers__lede{max-width:58ch;margin-top:24px;font-size:17px}
.logos{
  display:flex;flex-wrap:wrap;align-items:center;gap:clamp(26px,4vw,58px);
  margin-top:clamp(44px,5vw,66px);padding-block:34px;
  border-block:1px solid var(--line-soft);
}
.logos span{
  font-family:var(--display);font-size:clamp(15px,1.6vw,20px);font-weight:600;
  letter-spacing:.06em;color:rgba(255,255,255,.52);
  transition:color .45s var(--ease);
}
.logos span:hover{color:#fff}

.figures{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(26px,3vw,44px);margin-top:clamp(46px,5vw,72px)}
.figure b{
  display:block;font-family:var(--display);font-size:clamp(42px,5.4vw,66px);
  font-weight:600;color:#fff;line-height:1;letter-spacing:-.03em;margin-bottom:14px;
}
.figure span{display:block;font-size:15px;max-width:30ch;color:var(--muted)}

/* ---------- contact ---------- */
.contact{position:relative;padding:clamp(90px,12vw,170px) 0;overflow:hidden;border-top:1px solid var(--line-soft)}
.contact__media{position:absolute;inset:0;z-index:0}
.contact__media img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) brightness(.5) contrast(1.15)}
.contact__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,var(--ink) 0%,rgba(11,11,11,.72) 40%,rgba(11,11,11,.9) 100%);
}
.contact__body{position:relative;z-index:2}
.contact__lede{max-width:56ch;margin-top:24px;font-size:17px;color:rgba(255,255,255,.76)}
.mailto{
  display:inline-block;margin-top:34px;
  font-family:var(--display);font-size:clamp(20px,2.6vw,32px);font-weight:500;
  color:#fff;text-decoration:none;padding-bottom:8px;
  border-bottom:1px solid var(--red);
  transition:color .4s var(--ease),padding .4s var(--ease);
}
.mailto:hover{color:var(--red-text);padding-inline-end:14px}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line-soft);padding:52px 0 46px;background:var(--ink)}
.foot__inner{display:flex;flex-wrap:wrap;align-items:center;gap:26px 40px}
.foot__links{display:flex;flex-wrap:wrap;gap:26px;margin-left:auto}
.foot__links a{font-size:14px;color:var(--muted);text-decoration:none;transition:color .35s var(--ease)}
.foot__links a:hover{color:#fff}
.foot__legal{width:100%;display:flex;flex-wrap:wrap;gap:8px 22px;padding-top:28px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--muted-2)}
.foot__note{color:rgba(255,255,255,.34)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity 1s var(--ease),transform 1.1s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1020px){
  .apps__grid{grid-template-columns:1fr;max-width:640px}
  .steps{grid-template-columns:1fr 1fr}
  .step + .step{padding-left:0}
  .step:nth-child(even){padding-left:30px}
  .step + .step::before{display:none}
  .step:nth-child(even)::before{display:block}
  .loop{grid-template-columns:1fr}
  .loop__figure{order:-1}
  .split{grid-template-columns:1fr;max-width:640px}
  .figures{grid-template-columns:1fr;gap:32px}
  .figure span{max-width:44ch}
}
@media (max-width:820px){
  .nav__links,.nav__cta{display:none}
  .burger{display:flex}
  .hero__foot{flex-wrap:wrap;gap:18px 26px}
  .hero__rule{display:none}
  .foot__links{margin-left:0;width:100%}
}
@media (max-width:560px){
  body{font-size:16px}
  .steps{grid-template-columns:1fr}
  .step:nth-child(even){padding-left:0}
  .step:nth-child(even)::before{display:none}
  .hero{min-height:92svh}
}

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