/* =========================================================================
   GND Digital — scroll-sequence sites for US boat detailers
   Design system: Linear (near-black surfaces, Inter, acid lime, hairlines)
   ========================================================================= */

/* ---------- tokens ---------- */
:root{
  /* neutrals */
  --void:#08090a;
  --carbon:#0f1011;
  --obsidian:#161718;
  --graphite:#23252a;
  --smoke:#383b3f;
  --ash:#62666d;
  --fog:#8a8f98;
  --mist:#d0d6e0;
  --bone:#e5e5e6;
  --paper:#ffffff;

  /* accent — single primary action colour */
  --lime:#e4f222;
  --coral:#eb5757;

  /* radii — three only */
  --r-sm:2px;
  --r-btn:6px;
  --r-card:12px;
  --r-pill:9999px;

  /* elevation via hairlines, not shadows */
  --hair:inset 0 0 0 1px var(--graphite);
  --hair-2:inset 0 0 0 1px rgba(255,255,255,.06);
  --sh-sm:0 2px 4px rgba(0,0,0,.4);
  --sh-xl:0 4px 32px rgba(8,9,10,.6);

  /* rhythm */
  --gap:96px;
  --wrap:1200px;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,ul,figure{margin:0}
ul{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}

html{scroll-behavior:smooth;scroll-padding-top:88px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  background:var(--void);
  color:var(--mist);
  font-family:"Inter",system-ui,-apple-system,sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.5;
  font-feature-settings:"cv01" 1,"ss03" 1,"zero" 1;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

.mono{
  font-family:"JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;
  font-size:12px;font-weight:400;letter-spacing:.02em;
}

.skip{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--lime);color:var(--void);padding:10px 16px;border-radius:var(--r-btn);
}
.skip:focus{left:16px;top:16px}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:var(--r-sm)}

/* ---------- layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:24px}
.wrap--narrow{max-width:780px}
.section{padding-block:var(--gap)}
.section--alt{
  background:var(--carbon);
  border-block:1px solid var(--graphite);
}

/* ---------- type ---------- */
.h-display{
  font-size:clamp(40px,6.4vw,72px);font-weight:500;line-height:1.02;
  letter-spacing:-.022em;color:var(--paper);
}
.h-lg{
  font-size:clamp(30px,4.4vw,48px);font-weight:500;line-height:1.06;
  letter-spacing:-.022em;color:var(--paper);
}
h3{font-size:20px;font-weight:500;line-height:1.3;letter-spacing:-.012em;color:var(--bone)}
.dim{color:var(--ash)}
.lede{
  font-size:clamp(16px,1.5vw,20px);line-height:1.55;letter-spacing:-.012em;
  color:var(--fog);max-width:56ch;
}
.micro{font-size:14px;line-height:1.6;color:var(--ash);max-width:52ch}
.micro a{color:var(--mist);border-bottom:1px solid var(--smoke)}
.micro a:hover{color:var(--lime);border-color:var(--lime)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;
  color:var(--fog);
  background:rgba(255,255,255,.04);
  padding:5px 12px;border-radius:var(--r-pill);
  box-shadow:var(--hair-2);
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--lime);flex:none}
.dot--red{background:var(--coral)}

.sec-head{max-width:760px;margin-bottom:56px;display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.sec-head--split{
  max-width:none;flex-direction:row;justify-content:space-between;align-items:flex-end;gap:48px;
}
.sec-head--split>div{display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.sec-sub{font-size:17px;line-height:1.6;color:var(--ash);max-width:58ch}
.sec-sub--right{max-width:40ch;padding-bottom:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14px;font-weight:500;letter-spacing:-.011em;
  padding:9px 16px;border-radius:var(--r-btn);
  transition:background .16s var(--ease),color .16s var(--ease),box-shadow .16s var(--ease),transform .16s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--lime);color:var(--void)}
.btn--primary:hover{background:#eeff4a;transform:translateY(-1px)}
.btn--ghost{color:var(--mist);box-shadow:inset 0 0 0 1px var(--graphite)}
.btn--ghost:hover{color:var(--paper);box-shadow:inset 0 0 0 1px var(--smoke);background:rgba(255,255,255,.03)}
.btn--lg{padding:12px 22px;font-size:15px}
.btn--full{width:100%;margin-top:8px}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:50;
  background:rgba(8,9,10,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav.is-stuck{border-bottom-color:var(--graphite);background:rgba(8,9,10,.88)}
.nav__inner{
  max-width:var(--wrap);margin-inline:auto;padding:14px 24px;
  display:flex;align-items:center;gap:32px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand__mark{width:28px;height:28px}
.brand__text{font-size:16px;font-weight:500;letter-spacing:-.014em;color:var(--paper)}
.brand__dim{color:var(--ash);margin-left:4px}

.nav__links{display:flex;align-items:center;gap:28px;margin-right:auto}
.nav__links a{font-size:14px;color:var(--fog);transition:color .15s var(--ease)}
.nav__links a:hover{color:var(--paper)}

.nav__actions{display:flex;align-items:center;gap:10px;flex:none}

.nav__toggle{display:none;width:36px;height:36px;border-radius:var(--r-btn);box-shadow:inset 0 0 0 1px var(--graphite);flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav__toggle span{display:block;width:15px;height:1.5px;background:var(--mist);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav__toggle[aria-expanded="true"] span:first-child{transform:translateY(3.2px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.2px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;padding-top:152px;padding-bottom:96px;overflow:hidden}
.hero__glow{
  position:absolute;top:-260px;left:50%;transform:translateX(-50%);
  width:1100px;height:640px;pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(138,143,152,.16),transparent 66%);
}
.hero__inner{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;
}
.hero__copy{display:flex;flex-direction:column;align-items:flex-start;gap:26px}
.hero__copy h1{max-width:16ch;font-size:clamp(38px,5vw,58px)}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px}

.hero__visual{position:relative}
.hero__badge{
  position:absolute;bottom:-16px;left:-16px;
  display:flex;align-items:center;gap:8px;
  background:var(--obsidian);color:var(--fog);
  padding:8px 14px;border-radius:var(--r-pill);
  box-shadow:var(--hair),var(--sh-sm);
}
.hero__badge svg{width:12px;height:18px}
.hero__badge-dot{animation:scrollDot 2s var(--ease) infinite}
@keyframes scrollDot{0%,100%{transform:translateY(0);opacity:1}50%{transform:translateY(8px);opacity:.35}}

/* ---------- browser frame ---------- */
.browser{
  background:var(--carbon);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--hair),var(--sh-xl);
}
.browser__bar{
  display:flex;align-items:center;gap:12px;padding:10px 14px;
  border-bottom:1px solid var(--graphite);background:var(--obsidian);
}
.browser__dots{display:flex;gap:6px}
.browser__dots i{width:8px;height:8px;border-radius:50%;background:var(--graphite)}
.browser__url{
  font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--ash);
  background:rgba(255,255,255,.03);padding:3px 10px;border-radius:var(--r-sm);
}
.browser__screen{position:relative;aspect-ratio:800/460;overflow:hidden;background:var(--void)}
.browser__screen .boat{width:100%;height:100%}
.browser__caption{
  position:absolute;left:14px;top:14px;z-index:2;
  background:rgba(8,9,10,.7);backdrop-filter:blur(6px);
  padding:4px 10px;border-radius:var(--r-sm);color:var(--fog);
  box-shadow:var(--hair-2);
}
.browser__meter{
  position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--graphite);z-index:2;
}
.browser__meter span{display:block;height:100%;width:0;background:var(--lime);transition:width .06s linear}
.browser--lg{width:100%}

/* ---------- marquee strip ---------- */
.strip{border-block:1px solid var(--graphite);background:var(--carbon);padding-block:28px;overflow:hidden}
.strip__label{
  text-align:center;color:var(--ash);text-transform:uppercase;letter-spacing:.12em;margin-bottom:16px;
}
.marquee{
  position:relative;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
}
.marquee__track{
  display:flex;align-items:center;gap:18px;width:max-content;
  animation:slide 46s linear infinite;
}
.marquee__track span{font-size:17px;font-weight:500;letter-spacing:-.012em;color:var(--fog);white-space:nowrap}
.marquee__track i{color:var(--smoke);font-style:normal}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.card{
  background:var(--carbon);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--hair);
  display:flex;flex-direction:column;gap:12px;
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.card:hover{box-shadow:inset 0 0 0 1px var(--smoke);background:var(--obsidian)}
.card p{font-size:15px;line-height:1.6;letter-spacing:-.011em;color:var(--ash)}
.card em{color:var(--mist);font-style:italic}
.card--sm{padding:18px;gap:8px}
.card--sm h3{font-size:16px}
.card--sm p{font-size:14px;line-height:1.55}
.card__ico{
  width:36px;height:36px;border-radius:var(--r-btn);background:rgba(255,255,255,.04);
  display:grid;place-items:center;box-shadow:var(--hair-2);margin-bottom:4px;
}
.card__ico svg{width:18px;height:18px;fill:none;stroke:var(--fog);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* ---------- scroll sequence ---------- */
.seq{background:var(--carbon);border-block:1px solid var(--graphite)}
.seq__scroller{height:460vh;position:relative}
.seq__stage{position:sticky;top:0;height:100vh;display:flex;align-items:center;overflow:hidden}
.seq__grid{display:grid;grid-template-columns:1fr 1.08fr;gap:64px;align-items:center;width:100%}

.seq__text{display:flex;flex-direction:column;align-items:flex-start;gap:18px}
.seq__title{margin-bottom:6px}
.seq__panels{position:relative;min-height:250px;width:100%}
.seq__panel{
  position:absolute;inset:0;
  display:flex;flex-direction:column;gap:12px;align-items:flex-start;
  opacity:0;transform:translateY(14px);
  transition:opacity .45s var(--ease),transform .45s var(--ease);
  pointer-events:none;
}
.seq__panel.is-on{opacity:1;transform:none;pointer-events:auto}
.seq__num{color:var(--lime)}
.seq__panel h3{font-size:clamp(20px,2.2vw,28px);letter-spacing:-.018em;color:var(--paper)}
.seq__panel p{font-size:16px;line-height:1.6;color:var(--ash);max-width:44ch}

.seq__rail{display:flex;gap:6px;margin-top:4px}
.seq__rail i{width:34px;height:3px;border-radius:var(--r-pill);background:var(--graphite);transition:background .3s var(--ease)}
.seq__rail i.is-on{background:var(--lime)}

.seq__visual{display:flex;flex-direction:column;gap:14px;align-items:center}
.seq__hint{color:var(--smoke);letter-spacing:.14em;text-transform:uppercase;transition:opacity .3s var(--ease)}
.seq__hint.is-hidden{opacity:0}

/* boat svg wipes */
.boat .wipe-dull{transform-origin:800px 0;transform:scaleX(1)}
.boat .wipe-gloss{transform-origin:0 0;transform:scaleX(0)}
.boat__edge{opacity:0;transition:opacity .3s var(--ease)}
.boat__edge.is-on{opacity:1}

/* ---------- feature rows ---------- */
.feat{border-top:1px solid var(--graphite);margin-bottom:64px}
.feat__row{
  display:grid;grid-template-columns:280px 1fr;gap:32px;
  padding:22px 4px;border-bottom:1px solid var(--graphite);
  transition:background .18s var(--ease);
}
.feat__row:hover{background:rgba(255,255,255,.015)}
.feat__k{
  display:flex;align-items:baseline;gap:12px;
  font-size:17px;font-weight:500;letter-spacing:-.012em;color:var(--paper);
}
.feat__k .mono{color:var(--lime)}
.feat__v{font-size:15px;line-height:1.6;color:var(--ash);max-width:62ch}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  background:var(--carbon);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--hair);display:flex;flex-direction:column;gap:10px;
}
.step__n{color:var(--fog);text-transform:uppercase;letter-spacing:.1em}
.step p{font-size:15px;line-height:1.6;color:var(--ash)}

/* ---------- relay ---------- */
.relay{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start}
.relay__side{display:flex;flex-direction:column;gap:20px;align-items:flex-start}
.relay__link{align-self:flex-start}

.phone{
  position:relative;background:var(--obsidian);border-radius:32px;padding:10px;
  box-shadow:var(--hair),var(--sh-xl);
}
.phone__notch{
  position:absolute;top:14px;left:50%;transform:translateX(-50%);
  width:76px;height:5px;border-radius:var(--r-pill);background:var(--graphite);z-index:3;
}
.phone__screen{
  background:var(--void);border-radius:24px;padding:34px 14px 18px;
  display:flex;flex-direction:column;gap:12px;min-height:540px;
}
.phone__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:10px;border-bottom:1px solid var(--graphite)}
.phone__title{font-size:14px;font-weight:500;color:var(--paper)}

.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;color:var(--fog);background:rgba(255,255,255,.05);
  padding:2px 8px;border-radius:var(--r-sm);
}
.pill--live i{width:5px;height:5px;border-radius:50%;background:#27a644}
.pill--dim{color:var(--ash)}

.ev{display:flex;flex-direction:column;gap:6px;opacity:0;transform:translateY(8px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.ev.is-on{opacity:1;transform:none}
.ev__meta{color:var(--smoke)}
.ev__missed{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--coral);
  background:rgba(235,87,87,.08);padding:8px 12px;border-radius:var(--r-btn);
}
.ev__missed svg{width:14px;height:14px;fill:currentColor}
.ev__booked{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--void);
  background:var(--lime);padding:9px 12px;border-radius:var(--r-btn);font-weight:500;
}
.ev__booked b{font-weight:500}
.ev__booked svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}

.bub{
  position:relative;font-size:13px;line-height:1.5;padding:10px 12px 22px;
  border-radius:var(--r-card);max-width:88%;
}
.bub--out{background:var(--graphite);color:var(--mist);align-self:flex-end;border-bottom-right-radius:var(--r-sm)}
.bub--in{background:rgba(255,255,255,.04);color:var(--fog);align-self:flex-start;border-bottom-left-radius:var(--r-sm);box-shadow:var(--hair-2)}
.bub__t{position:absolute;right:12px;bottom:7px;color:var(--ash);font-size:10px}

/* ---------- pricing ---------- */
.price{display:grid;grid-template-columns:1.15fr 1fr;gap:20px;margin-bottom:32px}
.price__col{
  background:var(--carbon);border-radius:var(--r-card);padding:28px;
  box-shadow:var(--hair);display:flex;flex-direction:column;gap:14px;align-items:flex-start;
}
.price__col--lead{box-shadow:inset 0 0 0 1px var(--smoke)}
.price__col--lead .pill{background:var(--lime);color:var(--void);font-weight:500}
.price__col h3{font-size:24px;letter-spacing:-.014em;color:var(--paper)}
.price__desc{font-size:15px;line-height:1.6;color:var(--ash)}
.ticks{display:flex;flex-direction:column;gap:9px;width:100%;margin-block:4px auto;padding-top:16px;border-top:1px solid var(--graphite)}
.ticks li{position:relative;padding-left:26px;font-size:15px;line-height:1.5;color:var(--mist)}
.ticks li::before{
  content:"";position:absolute;left:2px;top:6px;width:10px;height:6px;
  border-left:1.6px solid var(--lime);border-bottom:1.6px solid var(--lime);
  transform:rotate(-45deg);
}
.ticks--dim li{color:var(--ash)}
.ticks--dim li::before{border-color:var(--ash)}

.anchor{
  background:var(--obsidian);border-radius:var(--r-card);padding:32px;
  box-shadow:var(--hair);text-align:center;
}
.anchor p{font-size:17px;line-height:1.65;color:var(--ash);max-width:64ch;margin-inline:auto}
.anchor__big{color:var(--paper);font-weight:500}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--graphite)}
.faq details{border-bottom:1px solid var(--graphite)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:20px 4px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:500;letter-spacing:-.012em;color:var(--bone);
  transition:color .15s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--paper)}
.faq summary i{
  position:relative;flex:none;width:14px;height:14px;
}
.faq summary i::before,.faq summary i::after{
  content:"";position:absolute;background:var(--fog);transition:transform .2s var(--ease);
}
.faq summary i::before{left:0;top:6px;width:14px;height:1.5px}
.faq summary i::after{left:6px;top:0;width:1.5px;height:14px}
.faq details[open] summary i::after{transform:scaleY(0)}
.faq details[open] summary{color:var(--paper)}
.faq details p{padding:0 4px 22px;font-size:15px;line-height:1.65;color:var(--ash);max-width:66ch}

/* ---------- cta ---------- */
.cta{position:relative;padding-block:120px;overflow:hidden;border-top:1px solid var(--graphite)}
.cta__glow{
  position:absolute;bottom:-320px;left:50%;transform:translateX(-50%);
  width:1000px;height:600px;pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(228,242,34,.10),transparent 66%);
}
.cta__inner{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:24px}
.cta__title{margin-block:4px}
.cta__inner .lede{max-width:52ch}
.cta__buttons{justify-content:center}

/* ---------- contact form ---------- */
.form{
  width:100%;max-width:560px;margin-top:12px;text-align:left;
  background:var(--carbon);border-radius:var(--r-card);box-shadow:var(--hair);
  padding:32px;display:grid;gap:18px;
}
.form__row{display:grid;gap:7px}
.form__grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form label{
  font-size:12px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;
  color:var(--fog);font-family:"JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;
}
.form label .req{color:var(--lime)}
.form input[type="text"],.form input[type="tel"],.form input[type="email"],.form textarea{
  width:100%;padding:11px 13px;font:inherit;font-size:15px;line-height:1.4;
  color:var(--bone);background:var(--void);border:0;border-radius:var(--r-btn);
  box-shadow:inset 0 0 0 1px var(--graphite);
  transition:box-shadow .16s var(--ease),background .16s var(--ease);
}
.form textarea{resize:vertical;min-height:96px}
.form input::placeholder,.form textarea::placeholder{color:var(--smoke)}
.form input:hover,.form textarea:hover{box-shadow:inset 0 0 0 1px var(--smoke)}
.form input:focus,.form textarea:focus{
  outline:none;background:#0b0c0d;box-shadow:inset 0 0 0 1px var(--lime);
}
.form input:user-invalid,.form textarea:user-invalid{box-shadow:inset 0 0 0 1px var(--coral)}
.form__check{
  display:grid;grid-template-columns:auto 1fr;gap:11px;align-items:start;
  padding-top:4px;text-transform:none;letter-spacing:0;font-size:12.5px;
  line-height:1.55;color:var(--ash);font-weight:400;cursor:pointer;
}
.form__check input{
  appearance:none;-webkit-appearance:none;margin:1px 0 0;
  width:16px;height:16px;flex:none;border-radius:var(--r-sm);
  background:var(--void);box-shadow:inset 0 0 0 1px var(--smoke);cursor:pointer;
  transition:background .14s var(--ease),box-shadow .14s var(--ease);
}
.form__check input:hover{box-shadow:inset 0 0 0 1px var(--fog)}
.form__check input:checked{background:var(--lime);box-shadow:inset 0 0 0 1px var(--lime)}
.form__check input:checked::after{
  content:"";display:block;width:4px;height:8px;margin:2px auto 0;
  border:solid var(--void);border-width:0 2px 2px 0;transform:rotate(42deg);
}
.form__check input:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.form button[type="submit"]{margin-top:2px}
.form button[disabled]{opacity:.55;pointer-events:none}
.form__status{font-size:13.5px;line-height:1.5;color:var(--fog);margin:0}
.form__status[data-state="error"]{color:var(--coral)}
.form__status[data-state="ok"]{color:var(--lime)}
.form__pot{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
@media (max-width:640px){
  .form{padding:24px 20px}
  .form__grid{grid-template-columns:1fr}
}

/* ---------- footer ---------- */
.foot{background:var(--carbon);border-top:1px solid var(--graphite);padding-top:64px}
.foot__inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.foot__brand{display:flex;flex-direction:column;gap:14px;max-width:34ch}
.foot__brand p{font-size:14px;line-height:1.6;color:var(--ash)}
.foot__col{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.foot__col h4{color:var(--fog);text-transform:uppercase;letter-spacing:.1em;margin-bottom:4px;font-weight:400}
.foot__col a,.foot__col span{font-size:14px;line-height:1.5;color:var(--ash)}
.foot__col a{transition:color .15s var(--ease)}
.foot__col a:hover{color:var(--paper)}
.foot__base{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-block:20px;border-top:1px solid var(--graphite);color:var(--smoke);
}
.foot__dim{color:var(--smoke)}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* =========================================================================
   responsive
   ========================================================================= */
@media (max-width:1080px){
  .hero__inner{grid-template-columns:1fr;gap:56px}
  .hero__visual{max-width:640px}
  .seq__grid{gap:40px}
  .relay{grid-template-columns:300px 1fr;gap:32px}
  .foot__inner{grid-template-columns:1fr 1fr;gap:36px}
}

@media (max-width:900px){
  :root{--gap:72px}
  .nav__links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--carbon);border-bottom:1px solid var(--graphite);
    padding:8px 24px 16px;display:none;
  }
  .nav__links.is-open{display:flex}
  .nav__links a{width:100%;padding:12px 0;border-bottom:1px solid var(--graphite);font-size:15px}
  .nav__links a:last-child{border-bottom:0}
  .nav__toggle{display:flex}
  .nav__hide-sm{display:none}

  .hero{padding-top:128px}
  .grid-3,.steps{grid-template-columns:1fr}
  .sec-head--split{flex-direction:column;align-items:flex-start;gap:24px}
  .sec-sub--right{max-width:58ch}
  .feat__row{grid-template-columns:1fr;gap:8px}
  .relay{grid-template-columns:1fr;gap:40px}
  .relay__demo{max-width:340px;margin-inline:auto}
  .price{grid-template-columns:1fr}

  /* sequence: stack, visual on top */
  .seq__scroller{height:420vh}
  .seq__grid{grid-template-columns:1fr;gap:28px}
  .seq__visual{order:-1;width:100%}
  .seq__panels{min-height:220px}
  .seq__hint{display:none}
}

@media (max-width:600px){
  :root{--gap:64px}
  .wrap{padding-inline:18px}
  .hero__badge{left:auto;right:0;bottom:-14px}
  .grid-2{grid-template-columns:1fr}
  .foot__inner{grid-template-columns:1fr;gap:32px}
  .foot__base{flex-direction:column;align-items:flex-start;gap:8px}
  .btn--lg{width:100%}
  .hero__cta{width:100%}
  .cta{padding-block:88px}
  .seq__scroller{height:380vh}
  .price__col{padding:22px}
  .anchor{padding:24px}
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .reveal{opacity:1;transform:none}
  .marquee__track{animation:none}
}