/* ════════════════════════════════════════════════
   CHAINLAB MEDIA — shared theme
   "a signal intercepted mid-transmission"
   ════════════════════════════════════════════════ */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
  --bg:#05070f;            /* deep space navy, almost black */
  --bg-2:#070b16;
  --surface:#0a0f1c;
  --surface-2:#0e1424;
  --border:#18203a;        /* navy-indigo */
  --border-light:#242f52;
  --text:#e8ecf5;
  --muted:#697089;
  --soft:#c5cdda;          /* supporting body copy */
  --cyan:#00f0ff;
  --cyan-dim:#00f0ff15;
  --green:#00ff88;
  --green-dim:#00ff8815;
  --white-spark:#dfeaff;   /* cold white interference */
  --amber:#d9a05b;         /* dim amber spark */
}

html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  background:var(--bg);color:var(--text);
  font-family:'Outfit',sans-serif;font-weight:400;letter-spacing:-.01em;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
  position:relative;min-height:100vh;
}

/* ─── living background field (pressure changing underwater) ─── */
#bgfield{
  position:fixed;inset:-10%;z-index:0;pointer-events:none;
  background:
    radial-gradient(70% 55% at 18% 8%, rgba(26,46,104,.55), transparent 60%),
    radial-gradient(60% 50% at 88% 22%, rgba(10,58,82,.42), transparent 62%),
    radial-gradient(80% 60% at 50% 116%, rgba(40,26,96,.46), transparent 58%),
    radial-gradient(50% 40% at 70% 70%, rgba(8,40,66,.30), transparent 60%);
  transform:translateY(calc(var(--sy,0) * -7vh)) scale(1.05);
  filter:hue-rotate(calc(var(--sy,0) * 26deg)) saturate(1.08);
  transition:transform .2s linear, filter .4s linear;
  animation:bgBreathe 16s ease-in-out infinite;
}
@keyframes bgBreathe{0%,100%{opacity:.88}50%{opacity:1}}

#particles{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}

/* ─── film grain (subtle texture) ─── */
body::after{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:9999;opacity:.04;
  background:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ─── scanlines (only a texture when looking closely) ─── */
.scanlines{
  position:fixed;inset:0;pointer-events:none;z-index:9999;opacity:.03;
  background:repeating-linear-gradient(0deg,
    rgba(180,210,255,.5) 0px,
    rgba(180,210,255,.5) 1px,
    transparent 1px,
    transparent 4px);
  animation:scanCreep 9s linear infinite;
}
@keyframes scanCreep{from{background-position:0 0}to{background-position:0 4px}}

/* ─── NAV (floating glass) ─── */
nav{
  position:sticky;top:0;z-index:100;
  padding:1.1rem 2.5rem;display:flex;justify-content:space-between;align-items:center;
  background:rgba(4,6,15,.75);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(0,240,255,.08);
  animation:fadeDown .8s ease both;
}
@keyframes fadeDown{from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)}}
.logo{display:flex;align-items:center;gap:.65rem;text-decoration:none}
.logo-mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--cyan),var(--green));
  display:grid;place-items:center;
  font-family:'Syne',sans-serif;font-weight:800;font-size:.85rem;color:var(--bg);
}
.logo-text{font-family:'Syne',sans-serif;font-weight:700;font-size:1.25rem;color:var(--text);letter-spacing:-.01em}
.nav-links{display:flex;gap:2.25rem;align-items:center}
.nav-links a{
  color:var(--muted);text-decoration:none;font-size:.82rem;font-weight:500;
  transition:color .2s;position:relative;
}
.nav-links a:hover{color:var(--cyan)}
.nav-links a.active{color:var(--cyan)}
.nav-links a.active::after{
  content:'';position:absolute;left:0;bottom:-4px;width:100%;height:2px;background:var(--cyan);
}

/* hamburger */
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border:none;background:none;cursor:pointer;padding:8px;
}
.nav-toggle span{
  display:block;height:1.5px;width:100%;background:var(--cyan);border-radius:2px;
  transition:transform .3s,opacity .3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ─── shared eyebrow (mono lab-log) ─── */
.eyebrow{
  display:inline-flex;align-items:center;gap:.65rem;
  font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:rgba(0,240,255,.6);margin-bottom:1.4rem;
}
.eyebrow::before{content:'';width:24px;height:1px;background:linear-gradient(90deg,rgba(0,240,255,.6),transparent)}

/* ─── reveal ─── */
.fade-up{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* ─── section divider ─── */
.divider{
  border:0;border-top:1px solid rgba(255,255,255,.05);
  margin:80px auto;max-width:1200px;width:calc(100% - 48px);
}

/* ─── blinking cursor ─── */
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

/* ─── HERO (index splash) ─── */
.hero{
  position:relative;z-index:1;min-height:90vh;
  display:flex;flex-direction:column;justify-content:center;align-items:center;
  text-align:center;padding:5rem 2rem;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;z-index:0;background:url('splashscreen.png') center top / cover no-repeat}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(62% 50% at 50% 50%, rgba(5,7,15,.4), transparent 72%),
    linear-gradient(180deg,rgba(5,7,15,.55) 0%,rgba(5,7,15,.35) 34%,rgba(5,7,15,.55) 56%,rgba(5,7,15,.9) 82%,rgba(5,7,15,1) 100%),
    linear-gradient(90deg,rgba(5,7,15,.45) 0%,transparent 28%,transparent 72%,rgba(5,7,15,.45) 100%);
}
.hero-content{position:relative;z-index:2}
.hero-eyebrow{justify-content:center;animation:fadeUp .8s .2s ease both}
.hero h1{
  font-family:'Syne',sans-serif;font-weight:800;
  font-size:clamp(2.25rem,7vw,4rem);line-height:1.05;letter-spacing:-.03em;
  color:var(--text);
  animation:fadeUp .8s .35s ease both;text-shadow:0 4px 40px rgba(0,0,0,.6);
}
.hero h1 .dot{color:var(--cyan)}
.hero-id{
  margin-top:1.6rem;
  font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.25);
  animation:fadeUp .8s .5s ease both;text-shadow:0 2px 16px rgba(0,0,0,.6);
}
.hero-id .cursor{display:inline-block;margin-left:3px;color:var(--cyan);animation:blink .8s step-end infinite}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* ─── HERO HUD (techy floating overlay) ─── */
.hero-hud{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}

/* corner brackets framing the signal */
.hud-corner{position:absolute;width:36px;height:36px;border:2px solid rgba(0,240,255,.4);animation:hudPulse 4.5s ease-in-out infinite}
.hud-corner.tl{top:26px;left:26px;border-right:0;border-bottom:0}
.hud-corner.tr{top:26px;right:26px;border-left:0;border-bottom:0;animation-delay:.4s}
.hud-corner.bl{bottom:26px;left:26px;border-right:0;border-top:0;animation-delay:.8s}
.hud-corner.br{bottom:26px;right:26px;border-left:0;border-top:0;animation-delay:1.2s}
@keyframes hudPulse{0%,100%{opacity:.35}50%{opacity:.9}}

/* vertical scan sweep */
.hud-scan{position:absolute;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(0,240,255,.55) 35%,rgba(0,255,136,.45) 65%,transparent);
  box-shadow:0 0 14px rgba(0,240,255,.45);animation:hudScan 7s linear infinite}
@keyframes hudScan{0%{top:-4%;opacity:0}8%{opacity:.7}92%{opacity:.7}100%{top:104%;opacity:0}}

/* rotating reticle ring */
.reticle{position:absolute;top:50%;right:8%;width:90px;height:90px;margin-top:-45px;border-radius:50%;
  border:1px dashed rgba(0,240,255,.3);animation:spin 18s linear infinite}
.reticle::before{content:'';position:absolute;inset:18px;border-radius:50%;border:1px solid rgba(0,255,136,.18)}
.reticle::after{content:'';position:absolute;top:50%;left:50%;width:5px;height:5px;margin:-2.5px 0 0 -2.5px;border-radius:50%;background:rgba(0,240,255,.6);box-shadow:0 0 8px rgba(0,240,255,.6)}
@keyframes spin{to{transform:rotate(360deg)}}

/* floating data chips */
.chip{position:absolute;font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:rgba(0,240,255,.8);white-space:nowrap;
  padding:.32rem .6rem;border:1px solid rgba(0,240,255,.32);border-radius:3px;
  background:rgba(4,8,18,.6);backdrop-filter:blur(4px);box-shadow:0 0 16px rgba(0,240,255,.08);
  opacity:0;animation:chipIn .7s ease both,floatY 6s ease-in-out infinite}
.chip-1{top:13%;left:7%;animation-delay:.8s,.8s;animation-duration:.7s,6.5s}
.chip-2{top:20%;right:9%;animation-delay:1s,1s;animation-duration:.7s,7.5s}
.chip-3{bottom:24%;left:9%;animation-delay:1.2s,1.2s;animation-duration:.7s,8s}
.chip-4{bottom:17%;right:7%;color:rgba(0,255,136,.75);border-color:rgba(0,255,136,.3);animation-delay:1.4s,1.4s;animation-duration:.7s,6.8s}
.chip-5{top:46%;left:5%;animation-delay:1.6s,1.6s;animation-duration:.7s,5.5s}
.chip-dot{color:var(--cyan);animation:blink 1.1s step-end infinite}
@keyframes chipIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* headline glitch bursts (weak-signal interference) */
.hero h1{position:relative}
.hero h1::before,.hero h1::after{
  content:attr(data-text);position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;line-height:1.05;
  clip-path:inset(0);opacity:0;pointer-events:none}
.hero h1::before{color:#00f0ff;animation:glitchA 7s 3s infinite}
.hero h1::after{color:#00ff88;animation:glitchB 7s 3s infinite}
@keyframes glitchA{0%,4%,100%{opacity:0;transform:none}1%{opacity:.5;transform:translate(-3px,1px)}2%{opacity:.4;transform:translate(2px,-1px)}3%{opacity:0}}
@keyframes glitchB{0%,4%,100%{opacity:0;transform:none}1.5%{opacity:.45;transform:translate(3px,-1px)}2.5%{opacity:.4;transform:translate(-2px,1px)}3.5%{opacity:0}}

@media (prefers-reduced-motion:reduce){
  .hud-scan,.reticle,.chip,.chip-dot,.hud-corner,.hero h1::before,.hero h1::after{animation:none}
  .chip{opacity:1}
  .tx-fill,.vb-dot,.tag-new,.vp-ring,.vp-play,.rec-dot,.video-wrap{animation:none}
  .tx-fill{width:100%}
}

@media (max-width:760px){
  .reticle,.chip-3,.chip-5{display:none}
  .hud-corner{width:24px;height:24px}
  .hud-corner.tl,.hud-corner.tr{top:16px}
  .hud-corner.bl,.hud-corner.br{bottom:16px}
  .hud-corner.tl,.hud-corner.bl{left:16px}
  .hud-corner.tr,.hud-corner.br{right:16px}
  .chip-1{top:10%;left:5%}
  .chip-2{top:10%;right:5%}
  .chip-4{bottom:12%;right:5%}
}

/* ─── PAGE HERO (help / demo) ─── */
.page-hero{
  position:relative;z-index:1;text-align:center;
  max-width:780px;margin:0 auto;padding:6rem 2rem 3.5rem;
}
.page-hero .eyebrow{justify-content:center}
.page-hero h1{
  font-family:'Syne',sans-serif;font-weight:800;
  font-size:clamp(2.25rem,6vw,4rem);line-height:1.05;letter-spacing:-.03em;
  margin-bottom:1.2rem;
}
.page-hero h1 .dot{color:var(--cyan)}
.page-hero .sub{
  font-size:18px;line-height:1.7;color:rgba(255,255,255,.5);font-weight:400;
  max-width:520px;margin:20px auto 0;
}

/* ─── SIGNAL WAVEFORM (live, weak signal) ─── */
.signal{display:block;width:100%;height:auto;overflow:visible;margin-bottom:3rem}
.signal-path{
  fill:none;stroke:url(#sg);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:1600;stroke-dashoffset:1600;
  transition:stroke-dashoffset 2.4s cubic-bezier(.22,1,.36,1);
  filter:drop-shadow(0 0 4px rgba(0,240,255,.28));
}
.signal-path.drawn{stroke-dashoffset:0;animation:signalLive 7.3s linear 2.6s infinite}
@keyframes signalLive{
  0%{opacity:1;transform:translateX(0);filter:drop-shadow(0 0 4px rgba(0,240,255,.3))}
  11%{opacity:1}
  12%{opacity:.12;transform:translateX(0);filter:drop-shadow(0 0 7px rgba(217,160,91,.55))}
  13%{opacity:1;transform:translateX(-1.5px)}
  14.5%{transform:translateX(1px)}
  16%{transform:translateX(0);filter:drop-shadow(0 0 4px rgba(0,240,255,.3))}
  37%{opacity:1}
  37.6%{opacity:.4}
  38.4%{opacity:1}
  62%{opacity:1;transform:translateX(0);filter:drop-shadow(0 0 9px rgba(0,255,136,.35))}
  78%{opacity:1}
  79%{opacity:.1;transform:translateX(1.5px);filter:drop-shadow(0 0 7px rgba(217,160,91,.5))}
  80%{opacity:1;transform:translateX(-1px)}
  81.5%{transform:translateX(0);filter:drop-shadow(0 0 4px rgba(0,240,255,.3))}
  100%{opacity:1;transform:translateX(0);filter:drop-shadow(0 0 4px rgba(0,240,255,.28))}
}

/* ─── MISSION / ABOUT ─── */
.mission{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:5rem 2rem}
.mission-title{
  font-family:'Syne',sans-serif;font-weight:700;font-size:36px;line-height:1.12;letter-spacing:-.02em;
  color:var(--text);border-left:2px solid var(--cyan);padding-left:20px;margin:1rem 0 2.2rem;
}
.mission-body{max-width:680px}
.mission-body p{font-size:16px;line-height:1.75;color:rgba(255,255,255,.7);margin-bottom:24px}
.mission-body p:last-child{margin-bottom:0}
.mission-body .mission-lead{font-size:18px;line-height:1.7;color:rgba(255,255,255,.85)}
.mission-body .em{color:var(--text);font-weight:600}
.mission-readout{
  position:absolute;top:6.5rem;right:2rem;display:flex;flex-direction:column;gap:.75rem;
  font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.1em;
  color:rgba(0,240,255,.2);text-align:right;pointer-events:none;
}
.mission-readout span{opacity:0;animation:readoutIn 1.5s ease forwards}
.mission-readout span:nth-child(1){animation-delay:.4s}
.mission-readout span:nth-child(2){animation-delay:.8s}
.mission-readout span:nth-child(3){animation-delay:1.2s}
.mission-readout span:nth-child(4){animation-delay:1.6s}
@keyframes readoutIn{from{opacity:0;transform:translateY(6px)}to{opacity:.7;transform:translateY(0)}}

/* ─── HELP PANELS (dossier folders) ─── */
.panels{
  position:relative;z-index:1;max-width:960px;margin:60px auto 0;padding:0 2rem 6rem;
  display:grid;grid-template-columns:1fr 1fr;gap:2px;align-items:start;
}
.panel{
  position:relative;overflow:hidden;
  border:1px solid rgba(255,255,255,.07);border-radius:2px;
  background:rgba(255,255,255,.02);
  transition:border-color .25s,background .25s;
}
.panel:hover{border-color:rgba(0,240,255,.2);background:rgba(0,240,255,.03)}
.panel.open{border-color:rgba(0,240,255,.2)}
.panel-num{
  position:absolute;top:.5rem;right:1.4rem;z-index:0;pointer-events:none;
  font-family:'Syne',sans-serif;font-weight:800;font-size:72px;line-height:1;
  color:rgba(255,255,255,.04);letter-spacing:-.04em;
}
.panel-head{
  position:relative;z-index:1;width:100%;text-align:left;cursor:pointer;
  background:none;border:none;color:inherit;display:block;padding:32px;
}
.panel-label{
  display:block;font-family:'JetBrains Mono',monospace;font-size:11px;
  letter-spacing:.18em;text-transform:uppercase;color:rgba(0,240,255,.6);margin-bottom:1rem;
}
.panel-title{
  display:block;font-family:'Syne',sans-serif;font-weight:600;
  font-size:20px;letter-spacing:-.01em;color:var(--text);padding-right:2rem;
}
.panel-toggle{
  position:absolute;top:32px;right:32px;width:20px;height:20px;
  display:grid;place-items:center;
}
.panel-toggle::before,.panel-toggle::after{
  content:'';position:absolute;background:var(--cyan);border-radius:2px;transition:transform .35s,opacity .3s;
}
.panel-toggle::before{width:13px;height:1.5px}
.panel-toggle::after{width:1.5px;height:13px}
.panel.open .panel-toggle::after{transform:rotate(90deg);opacity:0}
.panel-body{
  position:relative;z-index:1;max-height:0;overflow:hidden;
  transition:max-height .45s cubic-bezier(.4,0,.2,1);
}
.panel-body-inner{
  margin:0 32px 28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.05);
  min-height:60px;color:var(--muted);font-size:14px;line-height:1.8;
}

/* ─── DEMONSTRATION ─── */
.demo{
  position:relative;z-index:1;max-width:900px;margin:0 auto;
  padding:1rem 2rem 7rem;text-align:center;
}
.demo-sub{
  font-family:'JetBrains Mono',monospace;font-size:13px;letter-spacing:.1em;
  color:rgba(255,255,255,.4);line-height:2.1;font-weight:400;
}
.demo-caption{
  font-size:14px;line-height:1.7;color:rgba(255,255,255,.35);
  max-width:560px;margin:0 auto 48px;
}
.video-wrap{
  position:relative;max-width:900px;margin:0 auto;
  border:1px solid rgba(0,240,255,.15);border-radius:2px;overflow:hidden;
  animation:pulseBorder 3s ease-in-out infinite;
}
@keyframes pulseBorder{
  0%,100%{box-shadow:0 0 0 rgba(0,240,255,0)}
  50%{box-shadow:0 0 24px rgba(0,240,255,.15)}
}
.video-status{
  background:rgba(0,240,255,.05);border-bottom:1px solid rgba(0,240,255,.1);
  padding:8px 16px;font-family:'JetBrains Mono',monospace;font-size:11px;
  color:rgba(0,240,255,.5);text-align:left;letter-spacing:.05em;
}
.rec-dot{color:var(--cyan);animation:recPulse 1.5s ease infinite}
@keyframes recPulse{0%,100%{opacity:1}50%{opacity:.3}}
.demo-video{width:100%;display:block;aspect-ratio:16/9;background:#000}

/* ─── LATEST UPDATES ─── */
.version-badge{
  display:inline-flex;align-items:center;gap:.6rem;margin-top:1.5rem;
  font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.16em;
  color:var(--cyan);border:1px solid rgba(0,240,255,.3);border-radius:3px;
  padding:.5rem .95rem;background:rgba(0,240,255,.05);
  box-shadow:0 0 18px rgba(0,240,255,.08);
}
.vb-dot{width:6px;height:6px;border-radius:50%;background:#00ff88;box-shadow:0 0 8px rgba(0,255,136,.7);animation:recPulse 1.6s ease infinite}

.tx-progress{max-width:420px;margin:2.4rem auto 0;text-align:left}
.tx-label{
  display:flex;justify-content:space-between;margin-bottom:8px;
  font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:.16em;color:rgba(0,240,255,.55);
}
.tx-bar{height:3px;background:rgba(255,255,255,.07);border-radius:2px;overflow:hidden}
.tx-fill{
  height:100%;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),#00ff88);
  box-shadow:0 0 10px rgba(0,240,255,.5);
  animation:txFill 2.2s .6s cubic-bezier(.22,1,.36,1) forwards;
}
@keyframes txFill{to{width:100%}}

.updates{position:relative;z-index:1;max-width:1080px;margin:0 auto;padding:0 2rem 7rem}
.update-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.ucard{
  position:relative;overflow:hidden;
  border:1px solid rgba(255,255,255,.07);border-radius:2px;background:rgba(255,255,255,.02);
  padding:30px 26px;
  transition:border-color .25s,background .25s,transform .25s;
}
.ucard:hover{border-color:rgba(0,240,255,.25);background:rgba(0,240,255,.03);transform:translateY(-4px)}
.ucard::after{
  content:'';position:absolute;top:0;left:-70%;width:45%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(0,240,255,.07),transparent);
  transform:skewX(-18deg);transition:left .7s ease;pointer-events:none;
}
.ucard:hover::after{left:130%}
.ucard-icon{
  width:46px;height:46px;display:grid;place-items:center;font-size:20px;
  border:1px solid rgba(0,240,255,.2);border-radius:3px;background:rgba(0,240,255,.05);
  margin-bottom:1.2rem;
}
.ucard h3{font-family:'Syne',sans-serif;font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--text);margin-bottom:.7rem}
.ucard p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.55)}
.tag-new{
  position:absolute;top:18px;right:18px;
  font-family:'JetBrains Mono',monospace;font-size:9px;letter-spacing:.2em;
  color:#00ff88;border:1px solid rgba(0,255,136,.35);border-radius:3px;
  padding:.28rem .55rem;background:rgba(0,255,136,.06);
  animation:recPulse 2s ease infinite;
}

.howto{max-width:640px;margin:80px auto 0}
.howto h2{font-family:'Syne',sans-serif;font-weight:700;font-size:28px;letter-spacing:-.02em;color:var(--text);margin:0 0 2.2rem}
.howto h2 .dot{color:var(--cyan)}
.steps{display:flex;flex-direction:column;list-style:none;margin:0;padding:0}
.step{position:relative;display:flex;gap:22px;padding-bottom:34px}
.step::before{
  content:'';position:absolute;left:17.5px;top:42px;bottom:6px;width:1px;
  background:linear-gradient(180deg,rgba(0,240,255,.3),rgba(0,240,255,.05));
}
.step:last-child{padding-bottom:0}
.step:last-child::before{display:none}
.step-num{
  flex:0 0 36px;height:36px;display:grid;place-items:center;
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--cyan);
  border:1px solid rgba(0,240,255,.3);border-radius:50%;background:rgba(0,240,255,.05);
}
.step p{font-size:15px;line-height:1.75;color:rgba(255,255,255,.65);padding-top:6px}
.step .em{color:var(--text);font-weight:600}

.update-video{max-width:900px;margin:80px auto 0}
.update-video .eyebrow{margin-bottom:1.2rem}
.video-pending{
  aspect-ratio:16/9;background:#04060d;
  display:flex;flex-direction:column;gap:16px;align-items:center;justify-content:center;
}
.vp-ring{
  width:56px;height:56px;border-radius:50%;border:1px dashed rgba(0,240,255,.4);
  display:grid;place-items:center;animation:spin 14s linear infinite;
}
.vp-play{
  width:0;height:0;margin-left:3px;
  border-left:12px solid rgba(0,240,255,.6);border-top:8px solid transparent;border-bottom:8px solid transparent;
  animation:spin 14s linear infinite reverse;
}
.video-pending>span:last-child{
  font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:.2em;color:rgba(0,240,255,.4);
}

/* ─── FOOTER ─── */
footer{
  position:relative;z-index:1;
  border-top:1px solid rgba(255,255,255,.06);
  margin-top:4rem;padding:48px 0 32px;
}
.footer-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:.85rem;
}
.footer-c{font-family:'Syne',sans-serif;font-weight:800;font-size:20px;line-height:1;color:var(--cyan)}
footer p{
  font-family:'JetBrains Mono',monospace;font-size:12px;
  color:rgba(255,255,255,.35);letter-spacing:.04em;
}

/* ─── RESPONSIVE ─── */
@media(max-width:900px){
  .panels{grid-template-columns:1fr;max-width:560px}
  .mission-readout{display:none}
  .update-cards{grid-template-columns:1fr;max-width:560px;margin-left:auto;margin-right:auto}
}
@media(max-width:768px){
  nav{padding:1rem 1.25rem}
  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;align-items:stretch;
    background:rgba(5,7,15,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    border-top:1px solid var(--border);border-bottom:1px solid var(--border);
    padding:.4rem 1.5rem 1rem;
    transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{display:flex;align-items:center;min-height:48px;padding:.6rem 0;font-size:1rem;border-bottom:1px solid var(--border)}
  .nav-links a:last-child{border-bottom:none}
  .nav-links a.active::after{display:none}
  .hero{min-height:80vh;padding:4rem 1.5rem}
  .mission{padding:4rem 1.5rem}
  .page-hero{padding:4rem 1.5rem 3rem}
  .demo{padding:1rem 1.25rem 5rem}
  .panels{padding:0 1.25rem 4.5rem}
  .updates{padding:0 1.25rem 5rem}
  .howto,.update-video{margin-top:60px}
}
@media(max-width:640px){
  .hero h1,.page-hero h1{font-size:2.25rem}
}