/* ───────────────────────── tokens ───────────────────────── */
:root{
  --ink:#111214;
  --ink-70:#4a4d52;
  --ink-40:#8b8f96;
  --line:#e2e3e6;
  --paper:#ffffff;
  --paper-2:#f7f7f5;

  --green:#a9cf9a;
  --blue:#a6c6dc;
  --yellow:#f0d264;
  --grey:#e9eaec;

  --sans:"Inter","Helvetica Neue",-apple-system,BlinkMacSystemFont,Segoe UI,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,"DejaVu Sans Mono",monospace;

  --w:1180px;
  --pad:clamp(20px,5vw,48px);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  letter-spacing:-0.006em;
}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-0.028em;line-height:1.06}
p{margin:0}
a{color:inherit}
ul,ol{margin:0;padding:0;list-style:none}

.wrap{max-width:var(--w);margin:0 auto;padding-inline:var(--pad)}
.muted{color:var(--ink-70)}
.fine{font-size:12.5px;color:var(--ink-40);letter-spacing:0}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:var(--ink);color:#fff;padding:8px 12px;z-index:99}

.eyebrow{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-40);
}

/* ───────────────────────── buttons ───────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  background:var(--ink);color:#fff;
  padding:13px 22px;border:1px solid var(--ink);
  font-family:var(--sans);font-size:15px;font-weight:500;letter-spacing:-.012em;
  text-decoration:none;white-space:nowrap;cursor:pointer;
  border-radius:0;
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.btn:hover{background:#000;border-color:#000}
.btn:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:#fff}
.btn--sm{padding:9px 15px;font-size:13.5px}

/* Primary calls to action carry an arrow that leans on hover. */
.btn--go::after{
  content:"→";font-size:16px;line-height:1;
  transition:transform .18s ease;
}
.btn--go:hover::after{transform:translateX(4px)}

/* ───────────────────────── nav ───────────────────────── */
.nav{
  position:sticky;top:0;z-index:40;
  display:flex;align-items:center;gap:24px;
  padding:14px var(--pad);
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav__mark{display:flex;align-items:center;gap:9px;text-decoration:none;margin-right:auto}
.nav__logo{display:flex;color:var(--ink)}
.nav__word{font-family:var(--mono);font-weight:600;letter-spacing:.16em;font-size:14px}

/* ───────────────────────── hero ───────────────────────── */
.hero{padding:clamp(36px,5vw,64px) 0 0}
.hero__grid{
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:clamp(28px,5vw,64px);align-items:center;
}
h1{font-size:clamp(33px,4.3vw,54px);text-wrap:balance}
.lede{margin-top:20px;font-size:clamp(16px,1.35vw,18.5px);color:var(--ink-70);max-width:50ch}
.eyebrow + h1{margin-top:16px}
.hero__cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero__note{margin-top:16px;font-size:13.5px;color:var(--ink-40)}
.hero__art{position:relative}
.hero__art svg{width:100%;height:auto;display:block}

@keyframes hover-bob{
  0%,100%{transform:translate(0,0)}
  50%{transform:translate(6px,-9px)}
}
.hero__drone{animation:hover-bob 4.6s ease-in-out infinite;transform-origin:center}

/* sketch primitives */
.sketch .ink{stroke:var(--ink);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.sketch .thin{stroke-width:1.2}
.sketch .hair{stroke-width:.8;opacity:.55}
.sketch .dash{stroke-dasharray:7 6}
.sketch .fill-green{fill:var(--green);stroke:none;opacity:.62}
.sketch .fill-blue{fill:var(--blue);stroke:none}
.sketch .fill-yellow{fill:var(--yellow);stroke:none;opacity:.75}
.sketch .fill-yellow-soft{fill:var(--yellow);stroke:none}
.sketch .fill-grey{fill:var(--grey);stroke:none}
.sketch .fill-white{fill:#fff}
.sketch .fill-ink{fill:var(--ink);stroke:none}
.sketch .ink .fill-green,.sketch .ink .fill-white{stroke:var(--ink)}

/* stat strip */
.strip{
  /* auto columns so the row stays even however many values are listed */
  display:grid;grid-auto-flow:column;grid-auto-columns:1fr;
  margin-top:clamp(26px,3.4vw,44px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.strip li{
  padding:18px 22px 18px 0;font-size:14px;color:var(--ink-70);
  border-right:1px solid var(--line);
}
.strip li:last-child{border-right:0}
.strip li + li{padding-left:22px}
.strip span{display:block;font-family:var(--mono);font-size:22px;color:var(--ink);letter-spacing:-.02em;margin-bottom:2px}

/* ───────────────────── looping flight ───────────────────── */
.flight{
  position:relative;background:var(--paper);
  padding:clamp(10px,1.6vw,22px) 0 clamp(26px,3.4vw,44px);
  overflow:hidden;
}
.flight__stage{position:relative;width:100%}
.scene{width:100%;height:auto;display:block}
.drone,.cone{will-change:transform}

/* annotations */
.notes{position:absolute;inset:0;pointer-events:none}
.note{
  position:absolute;left:var(--x);top:var(--y);margin:0;
  width:min(232px,32vw);
  background:var(--paper);
  border:1px solid var(--ink);
  padding:10px 12px;
  display:flex;gap:9px;
  opacity:0;transform:translateY(8px);
  transition:opacity .3s ease,transform .3s ease;
  box-shadow:5px 5px 0 rgba(17,18,20,.06);
}
.note.on{opacity:1;transform:translateY(0)}
.note__k{font-family:var(--mono);font-size:11px;color:var(--ink-40);padding-top:2px}
.note p{font-size:13px;line-height:1.4}
.note b{font-weight:600}

/* ───────────────────────── bands ───────────────────────── */
.band{padding:clamp(44px,5.2vw,74px) 0;border-top:1px solid var(--line)}
.band--alt{background:var(--paper-2)}
.band__h{font-size:clamp(26px,3.4vw,44px);margin-top:12px;max-width:20ch}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);margin-top:clamp(24px,3vw,40px);border:1px solid var(--line)}
.card{background:var(--paper);padding:clamp(20px,2.4vw,30px)}
.card__n{font-family:var(--mono);font-size:12px;color:var(--ink-40)}
.card h3{font-size:20px;margin:10px 0 10px}
.card p{font-size:14.5px;color:var(--ink-70)}

.compare{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);margin-top:clamp(26px,3vw,40px)}
.tick li{
  font-size:14.5px;color:var(--ink-70);
  padding:11px 0 11px 28px;position:relative;border-bottom:1px solid var(--line);
}
.tick li::before{
  content:"";position:absolute;left:2px;top:17px;width:12px;height:7px;
  border-left:1.6px solid var(--ink);border-bottom:1.6px solid var(--ink);
  transform:rotate(-45deg);
}
.tick--x li{color:var(--ink-40)}
.tick--x li::before{
  width:11px;height:11px;top:15px;border:0;
  background:
    linear-gradient(to bottom right,transparent 45%,var(--ink-40) 45%,var(--ink-40) 55%,transparent 55%),
    linear-gradient(to bottom left,transparent 45%,var(--ink-40) 45%,var(--ink-40) 55%,transparent 55%);
  transform:none;
}
.compare__col .eyebrow{padding-bottom:12px;border-bottom:1px solid var(--ink);display:block}

.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(28px,5vw,72px);align-items:start}
.split .muted{margin-top:16px;font-size:15px;max-width:38ch}
.list{counter-reset:l}
.list li{
  counter-increment:l;position:relative;
  padding:16px 0 16px 46px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-70);
}
.list li:first-child{border-top:1px solid var(--line)}
.list li::before{
  content:counter(l,decimal-leading-zero);
  position:absolute;left:0;top:18px;
  font-family:var(--mono);font-size:12px;color:var(--ink-40);
}
.list b{color:var(--ink);font-weight:600}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,44px);margin-top:clamp(24px,3vw,40px)}
.step{border-top:2px solid var(--ink);padding-top:16px}
.step__n{font-family:var(--mono);font-size:12px;color:var(--ink-40)}
.step h3{font-size:19px;margin:8px 0 8px}
.step p{font-size:14.5px;color:var(--ink-70)}

/* ───────────────────────── cta ───────────────────────── */
.cta{background:var(--ink);color:#fff;padding:clamp(44px,5.2vw,74px) 0}
.cta h2{font-size:clamp(26px,3.4vw,42px);max-width:16ch}
.cta .muted{color:rgba(255,255,255,.66);margin-top:16px;font-size:15px;max-width:44ch}
.cta__in{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,64px);align-items:center}
.cta .btn{background:#fff;color:var(--ink);border-color:#fff}
.cta .btn:hover{background:#f0f0ee}
.cta .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.cta .btn--ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.cta .fine{color:rgba(255,255,255,.5);margin-top:6px}

.cta__tiles{display:flex}
.btn--tile{padding:17px 30px;font-size:16px}

/* Honeypot: off-screen for people, still fillable by a naive bot. */
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}

/* ───────────────────────── modal ───────────────────────── */
.modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;padding:var(--pad)}
.modal[hidden]{display:none}
.modal__scrim{position:absolute;inset:0;background:rgba(17,18,20,.72);backdrop-filter:blur(3px);animation:fade .18s ease}
.modal__panel{
  position:relative;z-index:1;
  width:min(460px,100%);max-height:88vh;overflow:auto;
  background:var(--paper);color:var(--ink);
  border:1px solid var(--ink);
  padding:clamp(24px,3vw,36px);
  animation:pop .2s cubic-bezier(.2,.8,.3,1);
}
.modal__panel--wide{width:min(940px,100%)}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

.modal__x{
  position:absolute;top:8px;right:10px;
  background:none;border:0;cursor:pointer;
  font-size:26px;line-height:1;color:var(--ink-40);padding:6px 8px;
}
.modal__x:hover{color:var(--ink)}
.modal__h{font-size:clamp(22px,2.6vw,30px);margin-top:10px}
.modal__lede{margin-top:12px;font-size:15px;color:var(--ink-70)}
.modal__note{margin-top:10px}
.modal video{
  display:block;width:100%;height:auto;margin-top:20px;
  border:1px solid var(--ink);background:var(--ink);
}

/* ───────────────────────── form ───────────────────────── */
.form{display:flex;flex-direction:column;gap:16px;margin-top:22px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-40);
}
.field .opt{text-transform:none;letter-spacing:0}
.field input{
  font-family:inherit;font-size:15px;color:var(--ink);
  background:transparent;border:0;border-bottom:1px solid var(--line);
  padding:9px 2px;border-radius:0;
  transition:border-color .16s ease;
}
.field input::placeholder{color:var(--ink-40)}
.field input:focus{outline:none;border-bottom-color:var(--ink)}
.field input.bad{border-bottom-color:#b4342b}
.form__submit{align-self:flex-start;margin-top:6px}
.form__msg{font-size:13.5px;color:#b4342b;min-height:1.2em}
.form__msg.ok{color:var(--ink-70)}

/* ───────────────────────── footer ───────────────────────── */
.foot{padding:26px 0;border-top:1px solid var(--line)}
.foot__in{display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.foot__in .nav__word{margin-right:auto}

/* ───────────────────────── responsive ───────────────────────── */
@media (max-width:960px){
  .hero__grid{grid-template-columns:1fr}
  .hero__art{order:-1;max-width:460px}
  .strip{grid-auto-flow:row;grid-auto-columns:auto}
  .strip li{border-right:0;padding-left:0;border-bottom:1px solid var(--line)}
  .strip li:last-child{border-bottom:0}
  .strip li + li{padding-left:0}
  .cards,.steps{grid-template-columns:1fr}
  .compare,.split,.cta__in{grid-template-columns:1fr}

  /* The scene is a thin band at phone widths, so pinned callouts would overlap
     each other and spill outside it. Let them flow underneath instead, all
     visible at once, rather than clipping them. */
  .flight{overflow:visible}
  .notes{
    position:static;display:grid;grid-template-columns:1fr 1fr;
    gap:8px;margin-top:14px;padding-inline:var(--pad);
  }
  .note{
    position:static;width:auto;
    opacity:1;transform:none;transition:none;box-shadow:none;
  }
  .note p{font-size:12px}
}
@media (max-width:560px){
  body{font-size:16px}
  .cta__tiles{grid-template-columns:1fr}
  .tile{min-height:0}
  /* stays in the flow from the 960px rule above — just tighter */
  .note{padding:9px 11px}
  .note__k{display:none}
}
@media (max-width:420px){
  .notes{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero__drone{animation:none}
  .note{opacity:1;transform:none}
  .btn:hover{transform:none}
}