/* ════════════════════════════════════════════════════════════
   FLIGHTLINES — site styles
   Built strictly on the Flightlines Design Style Guide v0.2:
   dark native theme · Geist / Geist Mono / Space Grotesk (wordmark)
   one signal accent · hairlines · square-shouldered 3px radii
   spacing snapped to 2/4/8/12/16/24/40 · no gradients, no glows
   ════════════════════════════════════════════════════════════ */
:root{
  --bg-0:#000000; --bg-1:#0A0D10; --bg-2:#11161B; --bg-3:#1A2127; --bg-4:#232C34;
  --tx-0:#F5F7FA; --tx-1:#C7CED5; --tx-2:#8590A0; --tx-3:#4A5660;
  --line:rgba(255,255,255,.13); --line-2:rgba(255,255,255,.22); --line-3:rgba(255,255,255,.36);
  --signal:#00CDFD; --signal-bg:rgba(0,205,253,.10); --signal-line:rgba(0,205,253,.35);
  --mint:#51D39C; --mint-bg:rgba(81,211,156,.10); --mint-line:rgba(81,211,156,.35);
  --amber:#FFB330; --amber-bg:rgba(255,179,48,.10); --amber-line:rgba(255,179,48,.35);
  --crimson:#FC5855; --crimson-bg:rgba(252,88,85,.10); --crimson-line:rgba(252,88,85,.35);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bp-opacity:.55;
  --max-w:1140px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{font-family:'Geist',-apple-system,sans-serif;background:var(--bg-0);color:var(--tx-1);
  line-height:1.5;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block}

/* ── type roles ── */
.eyebrow{font-family:'Geist Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.12em;
  text-transform:uppercase;color:var(--tx-2);display:inline-flex;align-items:center;gap:10px}
.eyebrow .sq{width:6px;height:6px;background:var(--signal);flex:none}
.display{font-family:'Geist',sans-serif;font-weight:600;letter-spacing:-.015em;line-height:1.06;color:var(--tx-0)}
.lede{font-size:17px;line-height:1.6;color:var(--tx-1)}
.mono{font-family:'Geist Mono',monospace}
.muted{color:var(--tx-2)}

/* ── buttons ── */
.btn{font-family:'Geist',sans-serif;font-size:14px;font-weight:500;height:38px;padding:0 18px;
  border-radius:3px;display:inline-flex;align-items:center;gap:8px;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;transition:all .16s var(--ease)}
.btn-primary{background:var(--signal);color:#04070A;border-color:var(--signal);font-weight:600}
.btn-primary:hover{background:#3ad8ff;border-color:#3ad8ff}
.btn-ghost{background:transparent;color:var(--tx-1);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--line-3);color:var(--tx-0)}
.btn-quiet{background:none;border:none;color:var(--tx-2);height:auto;padding:0;font-size:14px}
.btn-quiet:hover{color:var(--tx-0)}
.btn .ar{font-size:13px}

/* ── tags ── */
.tag{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 7px;border-radius:3px;border:1px solid;line-height:1.4;display:inline-block}
.tag-mint{color:var(--mint);background:var(--mint-bg);border-color:var(--mint-line)}
.tag-amber{color:var(--amber);background:var(--amber-bg);border-color:var(--amber-line)}
.tag-info{color:var(--signal);background:var(--signal-bg);border-color:var(--signal-line)}

/* ── nav ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:64px;display:flex;align-items:center;
  justify-content:space-between;padding:0 40px;background:rgba(0,0,0,.88);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .24s var(--ease)}
.nav.scrolled{border-bottom-color:var(--line)}
.wm{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:19px;color:var(--tx-0);
  letter-spacing:-.01em;display:flex;align-items:center;gap:9px}
.wm .glyph{font-size:15px;transform:translateY(-1px)}
.nav-links{display:flex;gap:30px;list-style:none}
.nav-links a{font-size:14px;color:var(--tx-2);transition:color .16s var(--ease)}
.nav-links a:hover,.nav-links a.on{color:var(--tx-0)}
.nav-right{display:flex;align-items:center;gap:18px}
.nav-dash{font-size:14px;color:var(--tx-1);display:inline-flex;align-items:center;gap:6px}
.nav-dash .ar{color:var(--tx-2);font-size:12px}
.nav-dash:hover{color:var(--tx-0)}
.burger{display:none;background:none;border:1px solid var(--line-2);border-radius:3px;width:36px;height:36px;
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.burger span{display:block;width:16px;height:1.5px;background:var(--tx-0)}
.mobmenu{position:fixed;inset:0;z-index:99;background:rgba(0,0,0,.96);display:none;
  flex-direction:column;align-items:center;justify-content:center;gap:24px}
.mobmenu.open{display:flex}
.mobmenu a{font-size:20px;color:var(--tx-1)}
.mobmenu a:hover{color:var(--tx-0)}

/* ── hero ── */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;
  padding:160px 40px 0;overflow:hidden}

/* ════════════════════════════════════════════════════════════
   BACKGROUND SCHEMATIC SYSTEM · "the light table"
   Composed drafting wall: plates are pinned sheets at varied scale,
   rotation and depth. Motion = ink-in on arrival (a cyan plotter pen
   sweeps each sheet in), scroll-parallax by depth, and a discrete
   light-table shuffle that re-inks one hero sheet on long holds.
   Hooks: --bp-opacity scales the whole wall · --draw = ink-in speed.
   ════════════════════════════════════════════════════════════ */
.bp-zone{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bp-zone--hero{
  -webkit-mask-image:radial-gradient(116% 78% at 50% 40%, transparent 0, transparent 6%, #000 34%);
  mask-image:radial-gradient(116% 78% at 50% 40%, transparent 0, transparent 6%, #000 34%);
}
.bp-sheet{position:absolute;will-change:transform;
  opacity:calc(var(--bp-opacity) * var(--dim,1));
  transform:translate(-50%,-50%) translateY(var(--py,0px))}
.bp-rot{position:relative;width:100%;overflow:hidden;
  transform:rotate(var(--rot,0deg)) scale(var(--scl,1));transform-origin:50% 50%;
  transition:transform .9s var(--ease)}
.bp-curtain{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,transparent 0,var(--bg-0) 26px,var(--bg-0) 100%);
  transform:translateX(101%)}            /* default = REVEALED: plates are visible with zero JS */
.bp-curtain::before{content:"";position:absolute;left:14px;top:0;bottom:0;width:1.5px;
  background:var(--signal);opacity:.5}
/* the ink-in is a pure-CSS enhancement, added only when the document is visible;
   its resting state is revealed, so a throttled/hidden frame can never hide a plate */
@keyframes bpInk{from{transform:translateX(-14%)}to{transform:translateX(101%)}}
.bp-sheet.ink .bp-curtain{animation:bpInk var(--draw,1.3s) cubic-bezier(.5,0,.12,1) forwards}
@media (prefers-reduced-motion: reduce){
  .bp-curtain{display:none}
  .bp-rot{transition:none}
}

/* engineering plates (white line art) */
.fl-plate{width:100%;height:auto;display:block}
.fl-plate .o{stroke:#fff;stroke-opacity:.92;fill:none;stroke-width:.7;stroke-linejoin:round;stroke-linecap:round}
.fl-plate .d{stroke:#fff;stroke-opacity:.42;fill:none;stroke-width:.5}
.fl-plate .c{stroke:#fff;stroke-opacity:.46;fill:none;stroke-width:.5;stroke-dasharray:16 5 2 5}
.fl-plate .t{fill:#fff;fill-opacity:.6;font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:1.2px;text-transform:uppercase}
.fl-plate .tm{text-anchor:middle}
.fl-plate .fill{fill:rgba(255,255,255,.14);stroke:#fff;stroke-opacity:.5;stroke-width:.5}
.fl-plate .sig{stroke:var(--signal);stroke-opacity:.8;fill:rgba(0,205,253,.06);stroke-width:.7}
.fl-plate .sigd{stroke:var(--signal);stroke-opacity:.55;fill:none;stroke-width:.6;stroke-dasharray:4 4}
.fl-plate .tsig{fill:var(--signal);fill-opacity:.75;font-family:'Geist Mono',monospace;font-size:9px;letter-spacing:1.2px}
.hero-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;text-align:center}
.hero-inner .eyebrow{margin-bottom:30px}
.hero h1{font-size:clamp(48px,7.4vw,86px);letter-spacing:-.03em}
.hero .lede{margin-top:28px;max-width:560px;font-size:18px}
.hero-cta{display:flex;gap:12px;margin-top:38px;flex-wrap:wrap;justify-content:center}
.hero-foot{margin-top:40px;font-family:'Geist Mono',monospace;font-size:10.5px;letter-spacing:.14em;
  color:var(--tx-3);text-transform:uppercase}

/* instrument strip */
.strip{position:relative;z-index:1;margin-top:auto;width:100%;max-width:1240px;padding:96px 0 54px}
.strip-line{position:relative;height:1px;background:var(--line-2);overflow:visible}
.strip-scan{position:absolute;top:0;left:-160px;height:1px;width:160px;
  background:var(--signal);opacity:.8}
@media (prefers-reduced-motion: no-preference){
  .strip-scan{animation:scan 7s linear infinite}
}
body.no-scan .strip-scan{display:none}
@keyframes scan{from{left:-160px}to{left:100%}}
.strip-nodes{display:flex;justify-content:space-between;margin-top:-4px}
.strip-nodes a{display:flex;flex-direction:column;align-items:center;gap:14px;flex:1}
.strip-nodes .dot{width:7px;height:7px;background:var(--bg-0);border:1px solid var(--line-3);transition:all .16s var(--ease)}
.strip-nodes .nl{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.14em;
  color:var(--tx-2);text-transform:uppercase;transition:color .16s var(--ease)}
.strip-nodes a:hover .dot{background:var(--signal);border-color:var(--signal)}
.strip-nodes a:hover .nl{color:var(--tx-0)}

/* ── section shells ── */
.sec{position:relative;padding:120px 40px}
.wrap{max-width:var(--max-w);margin:0 auto}
.sec-head{max-width:680px;margin-bottom:64px}
.sec-head.cn{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.cn .eyebrow{justify-content:center}
.sec-head .eyebrow{margin-bottom:20px}
.sec-head h2{font-size:clamp(30px,3.6vw,44px)}
.sec-head .lede{margin-top:16px;color:var(--tx-2)}
.hairtop{border-top:1px solid var(--line)}
.raised{background:var(--bg-1)}

/* ── problem ── */
.prob-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prob{border-top:1px solid var(--line-2);padding-top:16px}
.prob .eyebrow{margin-bottom:12px;color:var(--tx-3)}
.prob h3{font-size:16px;font-weight:500;color:var(--tx-0);margin-bottom:8px;letter-spacing:-.01em}
.prob p{font-size:13.5px;line-height:1.6;color:var(--tx-2)}

/* ── product ── */
.prod-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.prod-row + .prod-row{margin-top:96px}
.prod-copy h3{font-family:'Geist',sans-serif;font-weight:600;font-size:26px;letter-spacing:-.015em;
  color:var(--tx-0);line-height:1.15;margin-bottom:14px}
.prod-copy .eyebrow{margin-bottom:18px}
.prod-copy p{font-size:15px;line-height:1.65;color:var(--tx-2)}
.prod-copy p + p{margin-top:12px}
.prod-copy strong{color:var(--tx-1);font-weight:500}
.feat-list{list-style:none;margin-top:20px}
.feat-list li{padding:10px 0;border-top:1px solid var(--line);font-size:14px;color:var(--tx-1);
  display:flex;gap:12px;align-items:baseline}
.feat-list li::before{content:'→';font-family:'Geist Mono',monospace;color:var(--signal);font-size:12px;flex:none}

/* fuse diagram */
.fuse{display:flex;flex-direction:column;max-width:460px;width:100%;margin:0 auto}
.fcard{background:var(--bg-1);border:1px solid var(--line);border-radius:3px;padding:20px 22px;position:relative;z-index:2}
.fcard .fh{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:12px}
.fcard .ft{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--tx-0)}
.fcard .fs{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.06em;color:var(--tx-3);text-transform:uppercase;white-space:nowrap}
.fcard .frow{font-size:13px;color:var(--tx-2);padding:6px 0;border-top:1px solid var(--line)}
.fcard .frow:first-of-type{border-top:none}
.fuse-link{position:relative;height:68px;display:flex;align-items:center;justify-content:center}
.fuse-link .spine{position:absolute;top:0;bottom:0;left:50%;width:1px;background:var(--signal-line)}
.fuse-node{position:relative;z-index:3;background:var(--bg-0);padding:6px 14px}
.fuse-node .nn{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--signal);border:1px solid var(--signal-line);background:var(--signal-bg);padding:5px 12px;border-radius:999px;display:inline-block}
.fuse-ar{position:absolute;font-family:'Geist Mono',monospace;font-size:9px;letter-spacing:.1em;
  color:var(--tx-3);text-transform:uppercase;left:50%;transform:translateX(-50%);display:flex;gap:5px;background:var(--bg-0);padding:0 6px}
.fuse-ar.up{top:2px}.fuse-ar.dn{bottom:2px}
.fuse-ar .arr{color:var(--signal)}

/* health panel */
.panel{background:var(--bg-1);border:1px solid var(--line);border-radius:3px;width:100%;max-width:480px;
  margin:0 auto;box-shadow:0 24px 60px rgba(0,0,0,.5);overflow:hidden}
.panel-h{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.panel-live{display:inline-flex;align-items:center;gap:7px;font-family:'Geist Mono',monospace;
  font-size:10px;letter-spacing:.1em;color:var(--mint);text-transform:uppercase}
.panel-live .d{width:6px;height:6px;border-radius:50%;background:var(--mint)}
@media (prefers-reduced-motion: no-preference){
  .panel-live .d{animation:pulse 2.4s infinite}
}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(81,211,156,.4)}70%{box-shadow:0 0 0 7px rgba(81,211,156,0)}100%{box-shadow:0 0 0 0 rgba(81,211,156,0)}}
.trace{padding:16px 20px 6px}
.trace svg{display:block;width:100%;height:auto}
.rows{padding:4px 20px 14px}
.row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-top:1px solid var(--line)}
.row:first-child{border-top:none}
.row .lab{font-size:13px;color:var(--tx-1)}
.row .lab .sub{font-family:'Geist Mono',monospace;font-size:9.5px;color:var(--tx-3);letter-spacing:.06em;margin-top:2px}
.predict{margin:0 20px 20px;border:1px solid var(--amber-line);background:var(--amber-bg);border-radius:3px;padding:12px 14px}
.predict .ph{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.1em;color:var(--amber);text-transform:uppercase;margin-bottom:5px}
.predict .pb{font-size:13px;color:var(--tx-0);line-height:1.5}
.predict .pn{font-family:'Geist Mono',monospace;font-size:9.5px;color:var(--tx-2);margin-top:6px;letter-spacing:.04em}

/* the box */
.devbox{width:240px;height:150px;background:var(--bg-2);border:1px solid var(--line-2);border-radius:3px;
  position:relative;margin:0 auto}
.devbox .etch{position:absolute;top:16px;left:18px;font-family:'Geist Mono',monospace;font-size:9px;
  letter-spacing:.22em;color:var(--tx-3);text-transform:uppercase}
.devbox .led{position:absolute;top:16px;right:18px;width:7px;height:7px;border-radius:50%;background:var(--mint)}
@media (prefers-reduced-motion: no-preference){.devbox .led{animation:pulse 2.4s infinite}}
.devbox .ports{position:absolute;bottom:16px;left:18px;right:18px;display:flex;gap:8px}
.devbox .ports span{height:9px;border-radius:2px;background:var(--bg-0);border:1px solid var(--line)}
.devbox .ports .p1{width:34px}.devbox .ports .p2{width:22px}.devbox .ports .p3{width:46px;margin-left:auto}
.devwrap{display:flex;flex-direction:column;align-items:center;gap:24px}
.devwrap .cap{font-family:'Geist Mono',monospace;font-size:10.5px;letter-spacing:.14em;color:var(--tx-2);text-transform:uppercase}
.devwrap .cap .hl{color:var(--signal)}

/* ── how it works ── */
#how .wrap{position:relative;z-index:1}
.steps{position:relative;margin-top:24px}
.steps-line{position:absolute;top:3px;left:0;right:0;height:1px;background:var(--line-2)}
.steps-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.step{padding-top:0}
.step .dot{width:7px;height:7px;background:var(--bg-0);border:1px solid var(--line-3);margin-bottom:18px;transition:all .3s var(--ease)}
.step.vis .dot{background:var(--signal);border-color:var(--signal)}
.step .idx{font-family:'Geist Mono',monospace;font-size:10px;letter-spacing:.14em;color:var(--tx-3);margin-bottom:8px}
.step h3{font-size:16px;font-weight:500;color:var(--tx-0);margin-bottom:8px;letter-spacing:-.01em}
.step p{font-size:13px;line-height:1.6;color:var(--tx-2)}
.install{margin-top:80px;border:1px solid var(--line);background:var(--bg-1);border-radius:3px;
  padding:24px 24px;display:flex;align-items:center;gap:40px;justify-content:space-between;flex-wrap:wrap}
.install .l .eyebrow{margin-bottom:10px}
.install .l h3{font-size:22px;font-weight:600;letter-spacing:-.015em;color:var(--tx-0)}
.install .r{font-size:14px;color:var(--tx-2);max-width:520px;line-height:1.65}
.install .r strong{color:var(--tx-1);font-weight:500}

/* ── platform: seat selector ── */
.seat-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:48px;flex-wrap:wrap}
.seat-tab{font-family:'Geist Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.12em;
  text-transform:uppercase;color:var(--tx-2);background:none;border:none;border-bottom:2px solid transparent;
  padding:12px 16px;margin-bottom:-1px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;
  transition:color .16s var(--ease)}
.seat-tab .dot{width:6px;height:6px;background:transparent;border:1px solid var(--line-3);transition:all .16s var(--ease)}
.seat-tab:hover{color:var(--tx-0)}
.seat-tab.on{color:var(--tx-0);border-bottom-color:var(--signal)}
.seat-tab.on .dot{background:var(--signal);border-color:var(--signal)}
.seat-pane{display:none;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.seat-pane.on{display:grid;animation:paneIn .4s var(--ease)}
/* transform-only: a stalled animation clock can never leave content invisible */
@keyframes paneIn{from{transform:translateY(10px)}to{transform:none}}
@media (prefers-reduced-motion: reduce){.seat-pane.on{animation:none}}
.seat-pane .sh{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.seat-pane h3{font-size:clamp(22px,2.6vw,30px);font-weight:600;letter-spacing:-.018em;color:var(--tx-0);line-height:1.18;margin-bottom:16px}
.seat-pane .narr{font-size:15px;line-height:1.7;color:var(--tx-2)}
.seat-pane .narr strong{color:var(--tx-1);font-weight:500}
.seat-mono{margin-top:28px;font-family:'Geist Mono',monospace;font-size:10.5px;letter-spacing:.14em;
  color:var(--tx-3);text-transform:uppercase}
.seat-mono .hl{color:var(--signal)}
.seat-pane .feat-list{margin-top:0}
.seat-pane .feat-list li{padding:12px 0;font-size:14px;line-height:1.55}

/* ── why ── */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px 48px}
.why{border-top:1px solid var(--line-2);padding-top:18px}
.why .eyebrow{margin-bottom:12px}
.why h3{font-size:18px;font-weight:500;color:var(--tx-0);letter-spacing:-.01em;margin-bottom:10px}
.why p{font-size:14px;line-height:1.65;color:var(--tx-2)}
.why p strong{color:var(--tx-1);font-weight:500}
.why-close{margin-top:80px;padding-top:32px;border-top:1px solid var(--line);text-align:center}
.why-close p{font-family:'Geist',sans-serif;font-size:clamp(20px,2.4vw,28px);font-weight:500;
  letter-spacing:-.015em;color:var(--tx-0);line-height:1.4;max-width:760px;margin:0 auto}
.why-close .hl{color:var(--signal)}

/* ── cta ── */
.cta{position:relative;padding:160px 40px;overflow:hidden;border-top:1px solid var(--line)}
.cta-inner{position:relative;z-index:1;text-align:center;max-width:640px;margin:0 auto}
.cta-inner .eyebrow{justify-content:center;margin-bottom:24px}
.cta-inner h2{font-size:clamp(34px,4.6vw,56px);letter-spacing:-.025em}
.cta-inner .lede{margin-top:20px;color:var(--tx-2)}
.cta-btns{display:flex;gap:12px;justify-content:center;margin-top:36px;flex-wrap:wrap}
.cta-dash{margin-top:28px;font-size:14px;color:var(--tx-2)}
.cta-dash a{color:var(--tx-1);border-bottom:1px solid var(--line-2)}
.cta-dash a:hover{color:var(--signal);border-color:var(--signal-line)}

/* ── footer ── */
.footer{border-top:1px solid var(--line);padding:40px;display:flex;align-items:center;
  justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer .wm{font-size:16px}
.foot-links{display:flex;gap:24px;list-style:none;flex-wrap:wrap}
.foot-links a{font-size:13px;color:var(--tx-2)}
.foot-links a:hover{color:var(--tx-0)}
.foot-copy{font-family:'Geist Mono',monospace;font-size:10.5px;letter-spacing:.08em;color:var(--tx-3);text-transform:uppercase}

/* ── reveal ── */
.rv{opacity:0;transform:translateY(14px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.rv.vis{opacity:1;transform:translateY(0)}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}
@media (prefers-reduced-motion: reduce){.rv{opacity:1;transform:none;transition:none}}

/* ── responsive ── */
@media (max-width:1024px){
  .prob-grid{grid-template-columns:1fr 1fr}
  .prod-row{grid-template-columns:1fr;gap:48px}
  .seat-pane{grid-template-columns:1fr;gap:32px}
  .why-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:repeat(3,1fr);gap:40px 24px}
  .steps-line{display:none}
  .step .dot{display:none}
  .step{border-top:1px solid var(--line-2);padding-top:14px}
}
@media (max-width:760px){
  .nav{padding:0 20px}
  .nav-links{display:none}
  .nav-right .btn{display:none}
  .burger{display:flex}
  .sec{padding:88px 20px}
  .hero{padding:140px 20px 0}
  .prob-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .strip-nodes .nl{font-size:8.5px;letter-spacing:.08em}
  .footer{padding:32px 20px}
}