/* ============================================================
   NASOS — Growth Infrastructure
   Design system + components + motion
   Built around the Nasos "N" mark: teal → indigo → violet.
   ============================================================ */

/* ---------- Fonts (self-hosted) ---------- */
@font-face{
  font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;
  src:url('../fonts/space-grotesk-latin.woff2') format('woff2');
}
@font-face{
  font-family:'Inter';font-style:normal;font-weight:300 700;font-display:swap;
  src:url('../fonts/inter-latin.woff2') format('woff2');
}

/* ---------- Tokens ---------- */
:root{
  --bg:#07070c;
  --bg-2:#0b0b14;
  --bg-3:#101020;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --surface:rgba(255,255,255,.025);
  --surface-2:rgba(255,255,255,.05);

  --teal:#12e6c8;
  --sky:#33a2d8;
  --indigo:#7d6bff;
  --violet:#a44df0;
  --deep:#1d1139;

  --ink:#f6f4fb;
  --ink-2:#c7c6d6;
  --muted:#8f8fa6;
  --muted-2:#66667c;

  --grad: linear-gradient(120deg,var(--teal) 0%,var(--sky) 32%,var(--indigo) 62%,var(--violet) 100%);
  --grad-soft: linear-gradient(120deg,rgba(18,230,200,.16),rgba(125,107,255,.16),rgba(164,77,240,.16));

  --radius:16px;
  --radius-lg:22px;
  --maxw:1240px;
  --nav-h:74px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);

  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(125,107,255,.35),0 20px 60px -18px rgba(125,107,255,.45);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--ink);
  line-height:1.6;font-size:16px;letter-spacing:-.01em;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  position:relative;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:rgba(125,107,255,.35);color:#fff}
:focus-visible{outline:2px solid var(--indigo);outline-offset:3px;border-radius:4px}

/* animated ambient aurora — drifts slowly to echo the hero network */
body::before{
  content:"";position:fixed;inset:-15%;z-index:-2;pointer-events:none;
  background:
    radial-gradient(1200px 700px at 15% 8%,rgba(18,230,200,.12),transparent 60%),
    radial-gradient(1100px 800px at 88% 4%,rgba(164,77,240,.14),transparent 55%),
    radial-gradient(900px 900px at 50% 116%,rgba(125,107,255,.10),transparent 60%);
  animation:auroraDrift 26s ease-in-out infinite;
  will-change:transform;
}
@keyframes auroraDrift{
  0%{transform:translate3d(0,0,0) scale(1)}
  33%{transform:translate3d(2.5%,-2%,0) scale(1.06)}
  66%{transform:translate3d(-2%,1.5%,0) scale(1.04)}
  100%{transform:translate3d(0,0,0) scale(1)}
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(140,130,180,.10) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(to bottom,transparent,#000 20%,#000 80%,transparent);
}

/* ---------- Type ---------- */
h1,h2,h3,h4,.display{font-family:'Space Grotesk',sans-serif;font-weight:600;line-height:1.05;letter-spacing:-.03em}
h1,.h1{font-size:clamp(2.6rem,6vw,5rem)}
h2,.h2{font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.08}
h3,.h3{font-size:clamp(1.35rem,2.4vw,1.9rem);line-height:1.15}
p{color:var(--ink-2)}
.lead{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--ink-2);line-height:1.65;max-width:60ch}
.muted{color:var(--muted)}
.mono{font-family:'Space Grotesk',ui-monospace,monospace;font-variant-numeric:tabular-nums}

.gradient-text{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:'Space Grotesk',sans-serif;font-size:.72rem;font-weight:500;
  letter-spacing:.28em;text-transform:uppercase;color:var(--teal);
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--teal),transparent)}
.eyebrow.center::before{background:linear-gradient(90deg,transparent,var(--teal))}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.section{padding-block:clamp(70px,11vw,140px);position:relative}
.section-sm{padding-block:clamp(48px,7vw,90px)}
.center{text-align:center}
.mx-auto{margin-inline:auto}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}

/* ---------- Buttons ---------- */
.btn{
  --pad:.95em 1.6em;
  display:inline-flex;align-items:center;justify-content:center;gap:.6em;
  padding:var(--pad);border-radius:999px;font-weight:600;font-size:.92rem;
  letter-spacing:-.01em;transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s;
  will-change:transform;position:relative;isolation:isolate;white-space:nowrap;
}
.btn svg{width:1.1em;height:1.1em;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn-primary{background:var(--grad);color:#0a0a12;font-weight:700;box-shadow:0 10px 30px -10px rgba(125,107,255,.6)}
.btn-primary::before{
  content:"";position:absolute;inset:0;border-radius:inherit;z-index:-1;
  background:var(--grad);filter:blur(16px);opacity:.55;transition:opacity .3s;
}
.btn-primary:hover{transform:translateY(-2px)}
.btn-primary:hover::before{opacity:.9}
.btn-ghost{border:1px solid var(--line-2);color:var(--ink);background:var(--surface);backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:var(--indigo);background:var(--surface-2);transform:translateY(-2px)}
.btn-lg{--pad:1.05em 2em;font-size:1rem}
.link-arrow{display:inline-flex;align-items:center;gap:.5em;color:var(--teal);font-weight:600;font-size:.92rem;transition:gap .3s var(--ease)}
.link-arrow svg{width:1.05em;height:1.05em;transition:transform .3s var(--ease)}
.link-arrow:hover{gap:.85em}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;width:100%;z-index:100;transition:background .4s,border-color .4s,backdrop-filter .4s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(8,8,14,.72);backdrop-filter:blur(18px) saturate(150%);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.brand{display:flex;align-items:center;gap:.7rem}
.brand svg{width:34px;height:34px;overflow:visible}
.brand-badge{border-radius:9px;box-shadow:0 5px 16px -5px rgba(18,230,200,.45),0 0 0 1px rgba(255,255,255,.06)}
.brand .wordmark{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:1.35rem;letter-spacing:-.02em;color:#fff}
.nav-links{display:flex;align-items:center;gap:2rem}
.nav-link{position:relative;font-size:.82rem;font-weight:500;letter-spacing:.05em;color:var(--ink-2);text-transform:uppercase;transition:color .25s;padding-block:.4rem}
.nav-link:hover,.nav-link[aria-current="page"]{color:#fff}
.nav-link::after{content:"";position:absolute;left:0;bottom:-2px;height:1.5px;width:0;background:var(--grad);transition:width .3s var(--ease)}
.nav-link:hover::after,.nav-link[aria-current="page"]::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:1rem}

/* mega dropdown */
.has-mega{position:static}
.mega{
  position:absolute;top:calc(var(--nav-h) - 8px);left:50%;transform:translateX(-50%) translateY(10px);
  width:min(760px,92vw);background:rgba(12,12,20,.94);backdrop-filter:blur(24px);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;
  display:grid;grid-template-columns:1fr 1fr;gap:26px;opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),transform .3s var(--ease);box-shadow:var(--shadow);z-index:120;
}
.has-mega:hover .mega,.mega:hover{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-col h5{font-family:'Space Grotesk';font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--teal);margin-bottom:14px}
.mega-link{display:block;padding:9px 10px;border-radius:10px;color:var(--ink-2);font-size:.9rem;transition:background .2s,color .2s;font-weight:500}
.mega-link span{display:block;font-size:.76rem;color:var(--muted-2);font-weight:400;margin-top:1px}
.mega-link:hover{background:var(--surface-2);color:#fff}

/* mobile */
.burger{display:none;width:44px;height:44px;align-items:center;justify-content:center}
.burger span{position:relative;width:22px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:22px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.burger span::before{top:-7px}.burger span::after{top:7px}
.burger.open span{background:transparent}
.burger.open span::before{top:0;transform:rotate(45deg)}
.burger.open span::after{top:0;transform:rotate(-45deg)}
.mobile-menu{position:fixed;inset:var(--nav-h) 0 0;background:rgba(7,7,12,.98);backdrop-filter:blur(20px);z-index:99;padding:32px clamp(20px,5vw,40px);display:flex;flex-direction:column;gap:6px;transform:translateY(-12px);opacity:0;visibility:hidden;transition:.35s var(--ease)}
.mobile-menu.open{transform:none;opacity:1;visibility:visible}
.mobile-menu a{font-family:'Space Grotesk';font-size:1.5rem;font-weight:500;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.mobile-menu .btn{margin-top:20px;font-size:1rem}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding-top:var(--nav-h);overflow:hidden}
#hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;
  -webkit-mask:linear-gradient(90deg,transparent 0%,transparent 34%,#000 52%,#000 100%);
  mask:linear-gradient(90deg,transparent 0%,transparent 34%,#000 52%,#000 100%)}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(90deg,var(--bg) 0%,rgba(7,7,12,.72) 30%,transparent 58%),
    linear-gradient(to bottom,rgba(7,7,12,.15),transparent 30%,rgba(7,7,12,.55) 85%,var(--bg))}
@media(max-width:1000px){
  #hero-canvas{-webkit-mask:linear-gradient(to bottom,transparent,#000 45%);mask:linear-gradient(to bottom,transparent,#000 45%);opacity:.55}
  .hero::after{background:linear-gradient(to bottom,rgba(7,7,12,.5),rgba(7,7,12,.35) 40%,rgba(7,7,12,.7) 85%,var(--bg))}
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{margin:.35em 0 .55em}
.hero .lead{margin-bottom:2.2em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{position:relative;aspect-ratio:1;max-width:520px;margin-inline:auto;width:100%}

/* floating badge chips near hero */
.chip{
  display:inline-flex;align-items:center;gap:.5em;padding:.5em 1em;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);font-size:.78rem;color:var(--ink-2);
  font-family:'Space Grotesk';backdrop-filter:blur(8px)
}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 10px var(--teal)}

/* ---------- Proof / stats bar ---------- */
.proof{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.proof-cell{background:var(--bg-2);padding:30px 26px}
.proof-cell .num{font-family:'Space Grotesk';font-size:clamp(1.8rem,3vw,2.5rem);font-weight:600;letter-spacing:-.03em}
.proof-cell .lbl{font-size:.86rem;color:var(--muted);margin-top:.4em;line-height:1.5}

/* ---------- Cards ---------- */
.card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;transition:transform .4s var(--ease),border-color .4s,background .4s;overflow:hidden;
}
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad);opacity:0;transition:opacity .4s;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.card:hover{transform:translateY(-4px);background:var(--surface-2)}
.card:hover::before{opacity:.6}
.card-glow{position:absolute;width:280px;height:280px;border-radius:50%;background:var(--grad);filter:blur(90px);opacity:0;transition:opacity .5s;pointer-events:none;z-index:-1}
.card:hover .card-glow{opacity:.14}

.icon-badge{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--grad-soft);border:1px solid var(--line-2);margin-bottom:18px}
.icon-badge svg{width:24px;height:24px;stroke:var(--teal)}

/* pillar cards */
.pillars{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pillar{padding:38px}
.pillar .tag{font-family:'Space Grotesk';font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.pillar h3{margin:.5em 0 .6em;max-width:16ch}
.pillar ul{list-style:none;margin:24px 0;display:grid;gap:12px}
.pillar li{display:flex;gap:.7em;font-size:.95rem;color:var(--ink-2);align-items:flex-start}
.pillar li svg{width:18px;height:18px;stroke:var(--teal);flex-shrink:0;margin-top:3px}

/* feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature h4{font-family:'Space Grotesk';font-size:1.12rem;margin:.2em 0 .5em}
.feature p{font-size:.92rem;color:var(--muted)}

/* ---------- Compounding loop ---------- */
.loop-wrap{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.loop-stage{display:flex;gap:18px;padding:18px 20px;border-radius:16px;border:1px solid transparent;transition:.4s var(--ease)}
.loop-stage .n{font-family:'Space Grotesk';font-weight:600;font-size:.95rem;width:38px;height:38px;flex-shrink:0;border-radius:10px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--line);color:var(--teal)}
.loop-stage h4{font-family:'Space Grotesk';font-size:1.05rem;margin-bottom:2px}
.loop-stage p{font-size:.88rem;color:var(--muted)}
.loop-stage.active{background:var(--surface);border-color:var(--line-2)}
.loop-stage.active .n{background:var(--grad);color:#0a0a12;border-color:transparent}

/* ---------- Case studies ---------- */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case{display:flex;flex-direction:column;min-height:280px;justify-content:space-between}
.case .kicker{font-family:'Space Grotesk';font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.case h3{margin:.5em 0 .4em}
.case .metrics{display:flex;gap:22px;margin-top:22px;flex-wrap:wrap}
.case .metrics .m b{display:block;font-family:'Space Grotesk';font-size:1.5rem;font-weight:600}
.case .metrics .m span{font-size:.76rem;color:var(--muted)}
.case-feature{grid-column:1/-1;display:grid;grid-template-columns:1.1fr 1fr;gap:40px;padding:40px}
@media(max-width:820px){.case-feature{grid-template-columns:1fr}}

/* ---------- Client logo slider (draggable) ---------- */
.logo-slider{
  position:relative;overflow-x:auto;overflow-y:hidden;cursor:grab;
  scrollbar-width:none;-ms-overflow-style:none;touch-action:pan-x;
  -webkit-mask:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);
  mask:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);
  padding-bottom:4px;
}
.logo-slider::-webkit-scrollbar{display:none}
.logo-slider.dragging{cursor:grabbing}
.logo-slider.dragging .logo-slide{pointer-events:none}
.logo-track{display:flex;gap:16px;width:max-content;padding:4px 2px}
.logo-slide{
  flex:0 0 auto;width:172px;height:100px;display:grid;place-items:center;
  background:#f5f5f8;border-radius:16px;border:1px solid rgba(255,255,255,.06);
  padding:22px 26px;transition:transform .35s var(--ease),box-shadow .35s var(--ease);
  box-shadow:0 1px 0 rgba(255,255,255,.04) inset;
}
.logo-slide img{max-width:100%;max-height:46px;width:auto;height:auto;object-fit:contain;-webkit-user-drag:none;user-select:none;pointer-events:none}
.logo-slide:hover{transform:translateY(-4px);box-shadow:0 16px 34px -14px rgba(18,230,200,.35),0 0 0 1px rgba(125,107,255,.4)}
.logo-slide.more{background:linear-gradient(135deg,rgba(18,230,200,.14),rgba(125,107,255,.16),rgba(164,77,240,.16));border:1px solid var(--line-2)}
.logo-slide.more b{font-family:'Space Grotesk';font-size:1.5rem;font-weight:600;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.logo-slide.more span{display:block;font-size:.72rem;color:var(--ink-2);margin-top:6px;letter-spacing:.04em}
.drag-hint{display:inline-flex;align-items:center;gap:.5em;font-family:'Space Grotesk';font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-top:20px}
.drag-hint svg{width:16px;height:16px;stroke:var(--teal)}

/* ---------- Tech ecosystem grid ---------- */
.tech-cats{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px}
.tech-cat{padding:.5em 1.1em;border:1px solid var(--line);border-radius:999px;font-size:.8rem;color:var(--ink-2);font-family:'Space Grotesk';background:var(--surface);transition:.3s}
.tech-cat:hover{border-color:var(--indigo);color:#fff}
.tech-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:12px}
.tech-tile{aspect-ratio:1;display:grid;place-items:center;border:1px solid var(--line);border-radius:14px;background:var(--surface-2);transition:.35s var(--ease)}
.tech-tile img{width:40px;height:40px;object-fit:contain;filter:brightness(0) invert(1);opacity:.82;transition:.35s}
.tech-tile:hover{transform:translateY(-3px);border-color:var(--line-2);background:rgba(255,255,255,.08)}
.tech-tile:hover img{filter:none;opacity:1;transform:scale(1.08)}

/* ---------- Steps (method) ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{position:relative;padding-top:26px;border-top:1px solid var(--line)}
.step::before{counter-increment:step;content:"0" counter(step);position:absolute;top:-14px;font-family:'Space Grotesk';font-size:.8rem;color:var(--bg);background:var(--grad);padding:2px 8px;border-radius:6px;font-weight:600}
.step h4{font-family:'Space Grotesk';font-size:1.15rem;margin-bottom:.4em}
.step p{font-size:.9rem;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{position:relative;border-radius:var(--radius-lg);border:1px solid var(--line);overflow:hidden;padding:clamp(40px,7vw,80px);text-align:center;background:var(--bg-2)}
.cta-band::before{content:"";position:absolute;inset:0;z-index:0;opacity:.5;background:radial-gradient(600px 300px at 50% 0%,rgba(125,107,255,.35),transparent 70%)}
.cta-band>*{position:relative;z-index:1}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);padding-block:64px 40px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer h6{font-family:'Space Grotesk';font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.footer a{display:block;color:var(--ink-2);font-size:.9rem;padding:6px 0;transition:color .2s}
.footer a:hover{color:#fff}
.footer-brand p{font-size:.9rem;color:var(--muted);max-width:34ch;margin-top:16px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;padding-top:28px;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted)}

/* ---------- Page hero (interior) ---------- */
.page-hero{position:relative;padding-top:calc(var(--nav-h) + clamp(60px,9vw,120px));padding-bottom:clamp(40px,6vw,80px);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;z-index:-1;opacity:.7;background:radial-gradient(700px 400px at 20% -20%,rgba(18,230,200,.12),transparent 60%),radial-gradient(700px 500px at 90% -10%,rgba(164,77,240,.14),transparent 60%)}
.page-hero h1{max-width:16ch}
.page-hero .lead{margin-top:1em}

/* pill list */
.pill-list{display:flex;flex-wrap:wrap;gap:10px}
.pill{padding:.55em 1em;border:1px solid var(--line);border-radius:999px;font-size:.85rem;color:var(--ink-2);background:var(--surface);transition:.3s}
.pill:hover{border-color:var(--line-2);color:#fff;background:var(--surface-2)}

/* outcome list (checks) */
.checks{list-style:none;display:grid;gap:12px}
.checks li{display:flex;gap:.7em;align-items:flex-start;color:var(--ink-2);font-size:.95rem}
.checks li svg{width:20px;height:20px;stroke:var(--teal);flex-shrink:0;margin-top:2px}

/* ---------- Scroll progress bar ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:2.5px;width:0;z-index:200;background:var(--grad);box-shadow:0 0 14px rgba(125,107,255,.7);transition:width .08s linear;border-bottom-right-radius:3px}

/* ---------- Scroll cue ---------- */
.scroll-cue{position:absolute;bottom:24px;left:0;right:0;margin-inline:auto;width:max-content;display:flex;flex-direction:column;align-items:center;gap:9px;z-index:3;color:var(--muted);font-family:'Space Grotesk';font-size:.66rem;letter-spacing:.24em;text-transform:uppercase;opacity:.8}
.scroll-cue .mouse{width:24px;height:38px;border:1.5px solid var(--line-2);border-radius:12px;position:relative}
.scroll-cue .mouse::after{content:"";position:absolute;top:7px;left:50%;width:3px;height:7px;border-radius:2px;background:var(--teal);box-shadow:0 0 8px var(--teal);animation:mouseScroll 1.7s var(--ease) infinite}
@keyframes mouseScroll{0%{opacity:0;transform:translate(-50%,0)}25%{opacity:1}55%{opacity:1;transform:translate(-50%,11px)}100%{opacity:0;transform:translate(-50%,13px)}}

/* ---------- Fixed FX layer: clips all decorative overflow to the viewport ---------- */
.fx{position:fixed;inset:0;overflow:hidden;z-index:-1;pointer-events:none}

/* ---------- Floating ambient particles ---------- */
.particles{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.particle-field{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.particles i{position:absolute;bottom:-10px;width:5px;height:5px;border-radius:50%;background:var(--teal);opacity:0;box-shadow:0 0 8px currentColor;animation:floatUp linear infinite}
@keyframes floatUp{0%{transform:translateY(0) scale(.6);opacity:0}12%{opacity:.55}88%{opacity:.55}100%{transform:translateY(-90vh) scale(1);opacity:0}}

/* ---------- Parallax depth orbs (drift with scroll) ---------- */
.p-orb{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;will-change:transform;opacity:.5}

/* ---------- Scroll-linked dynamic spine (weaving glowing path) ---------- */
.spine-svg{position:absolute;top:0;left:0;z-index:-1;pointer-events:none;overflow:visible}
.spine-track{fill:none;stroke:rgba(255,255,255,.06);stroke-width:1.5}
.spine-draw{fill:none;stroke:url(#spineGrad);stroke-width:2.6;stroke-linecap:round;filter:drop-shadow(0 0 6px rgba(125,107,255,.75))}
.spine-head{fill:#e6fbff;filter:drop-shadow(0 0 8px #12e6c8) drop-shadow(0 0 18px rgba(125,107,255,.85))}
.spine-dot{fill:var(--bg-3);stroke:rgba(255,255,255,.22);stroke-width:1;transition:fill .45s,stroke .45s,filter .45s}
.spine-dot.lit{fill:#12e6c8;stroke:#12e6c8;filter:drop-shadow(0 0 9px #12e6c8)}
@media(max-width:820px){.spine-svg{display:none}}

/* ---------- Scroll reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(38px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
[data-reveal].in{opacity:1;transform:none}
[data-reveal="left"]{transform:translateX(-40px)}
[data-reveal="right"]{transform:translateX(40px)}
[data-reveal="scale"]{transform:scale(.94);opacity:0}
[data-reveal="blur"]{filter:blur(12px)}
[data-reveal="blur"].in{filter:blur(0)}
[data-reveal-stagger]>*{opacity:0;transform:translateY(30px);transition:opacity .75s var(--ease-out),transform .75s var(--ease-out)}
[data-reveal-stagger].in>*{opacity:1;transform:none}

/* scroll-driven section heading underline sweep */
.sweep{position:relative;display:inline-block}
.sweep::after{content:"";position:absolute;left:0;bottom:-8px;height:2px;width:0;background:var(--grad);transition:width 1s var(--ease-out) .2s}
.sweep.in::after,[data-reveal].in .sweep::after{width:100%}

/* ---------- Responsive ---------- */
@media(max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{grid-row:1;max-width:380px}
  .pillars,.loop-wrap,.cases{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .feature-grid,.steps{grid-template-columns:1fr 1fr}
  .proof{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  :root{--nav-h:64px}
  .nav-links,.nav-cta .btn{display:none}
  .burger{display:flex}
  .feature-grid,.steps,.proof{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero{min-height:auto;padding-block:calc(var(--nav-h) + 44px) 64px}
  .hero-visual{display:none}
  .hero-grid{gap:0}
  .case-feature{padding:26px}
  .hero-cta .btn{width:100%}
  h1,.h1{font-size:clamp(2.3rem,10vw,3rem)}
  .cta-band h2{font-size:clamp(1.7rem,7vw,2.2rem)}
}

/* ---------- Reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-reveal],[data-reveal-stagger]>*{opacity:1!important;transform:none!important}
  .marquee-track{animation:none;flex-wrap:wrap;justify-content:center}
}