/* ---------- Reset & tokens ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#07070c;
  --bg-2:#0b0c13;
  --text:#eef0f6;
  --muted:#9096ad;
  --muted-2:#6d7290;
  --border:rgba(255,255,255,.09);
  --surface:rgba(255,255,255,.028);
  --surface-2:rgba(255,255,255,.05);
  --grad-1:#8b7bff;
  --grad-2:#2ee6f0;
  --radius:20px;
  --maxw:1160px;
}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  font-weight:450;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,.brand,.tier-name{font-family:"Space Grotesk","Inter",sans-serif;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
section{position:relative;z-index:1}
section[id]{scroll-margin-top:84px} /* offset so the sticky nav doesn't cover section titles on anchor jumps */

/* ---------- Background FX ---------- */
.bg-grid{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 55% at 50% 0%,#000 40%,transparent 100%);
}
.bg-glow{
  position:fixed;z-index:0;pointer-events:none;
  top:-260px;left:50%;transform:translateX(-50%);
  width:1100px;height:800px;
  background:
    radial-gradient(closest-side,rgba(124,108,255,.35),transparent 70%),
    radial-gradient(closest-side,rgba(46,230,240,.22),transparent 70%);
  background-position:35% 30%,70% 45%;
  background-repeat:no-repeat;
  filter:blur(30px);
  transition:transform .3s ease-out;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.8rem 1.4rem;border-radius:12px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .25s,background .25s,border-color .25s;
  white-space:nowrap;
}
.btn-sm{padding:.55rem 1.05rem;font-size:.88rem}
.btn-primary{
  color:#0a0a12;
  background:linear-gradient(120deg,var(--grad-1),var(--grad-2));
  box-shadow:0 6px 24px -6px rgba(124,108,255,.6);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px -6px rgba(124,108,255,.75)}
.btn-ghost{color:var(--text);background:var(--surface-2);border-color:var(--border)}
.btn-ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-2px)}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(7,7,12,.6);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:.9rem 1.5rem;display:flex;align-items:center;gap:2rem}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:700;font-size:1.12rem}
.brand-icon{flex:none}
.brand-accent{color:var(--grad-2)}
.nav-links{display:flex;gap:1.9rem;margin-left:auto;font-size:.95rem;color:var(--muted)}
.nav-links a{transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav .btn-primary{margin-left:.4rem}

/* ---------- Hero ---------- */
.hero{max-width:900px;margin:0 auto;padding:3.25rem 1.5rem 4rem;text-align:center}
.eyebrow{
  display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--grad-2);padding:.4rem .9rem;border:1px solid var(--border);border-radius:100px;
  background:var(--surface);margin-bottom:1.6rem;
}
.hero h1{font-size:clamp(2.5rem,6vw,4.4rem);line-height:1.05;font-weight:700;margin-bottom:1.4rem}
.grad-text{background:linear-gradient(110deg,var(--grad-1) 10%,var(--grad-2) 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(1.02rem,2.2vw,1.22rem);color:var(--muted);max-width:660px;margin:0 auto 2.2rem}
.hero-cta{display:flex;gap:.9rem;justify-content:center;flex-wrap:wrap}
.trust-row{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:3rem}
.trust{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:.9rem 1.2rem;min-width:170px;text-align:center}
.trust b{display:block;font-family:"Space Grotesk";font-size:1.5rem;background:linear-gradient(120deg,var(--grad-1),var(--grad-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.trust span{font-size:.85rem;color:var(--muted)}

/* ---------- Section head ---------- */
.section-head{text-align:center;max-width:640px;margin:0 auto 3.2rem}
.section-head h2{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:600;margin-bottom:.7rem}
.section-head p{color:var(--muted);font-size:1.05rem}

/* ---------- Cubes ---------- */
.cubes{max-width:var(--maxw);margin:0 auto;padding:3rem 1.5rem 4rem}
.cube-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem;perspective:1400px}
.tier{
  position:relative;padding:2.4rem 1.8rem 2rem;border-radius:var(--radius);
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);
  transform-style:preserve-3d;
  transition:transform .25s ease-out,box-shadow .35s,border-color .35s;
  overflow:hidden;
}
.tier::before{ /* accent glow blob */
  content:"";position:absolute;top:-40%;left:50%;width:260px;height:260px;transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(var(--a1),.28),transparent 70%);
  opacity:.55;transition:opacity .35s;pointer-events:none;
}
.tier:hover{border-color:rgba(var(--a1),.55);box-shadow:0 30px 70px -30px rgba(var(--a1),.6),0 0 0 1px rgba(var(--a1),.15) inset}
.tier:hover::before{opacity:.9}

/* per-tier accents (r,g,b) */
.tier-optima{--a1:46,214,240;--a2:59,130,246}     /* cyan → blue */
.tier-perpetu{--a1:139,123,255;--a2:217,110,239}  /* violet → fuchsia */
.tier-maxima{--a1:245,175,70;--a2:244,80,110}     /* amber → rose */

/* ---------- 3D Cube ---------- */
.scene{width:132px;height:132px;margin:0 auto 1.8rem;perspective:760px}
.cube{
  position:relative;width:100%;height:100%;transform-style:preserve-3d;
  transform:rotateX(-22deg) rotateY(-28deg);
  animation:spin 16s linear infinite;
}
.tier:hover .cube{animation-duration:5.5s}
@keyframes spin{
  from{transform:rotateX(-22deg) rotateY(0)}
  to{transform:rotateX(-22deg) rotateY(360deg)}
}
.face{
  position:absolute;width:132px;height:132px;
  border:1.5px solid rgba(var(--a1),.65);
  background:linear-gradient(135deg,rgba(var(--a1),.16),rgba(var(--a2),.05));
  box-shadow:inset 0 0 34px rgba(var(--a1),.18),0 0 22px rgba(var(--a1),.12);
  border-radius:10px;
}
.face::after{content:"";position:absolute;inset:34%;border:1px solid rgba(var(--a1),.5);border-radius:4px;opacity:.5}
.face.front {transform:translateZ(66px)}
.face.back  {transform:rotateY(180deg) translateZ(66px)}
.face.right {transform:rotateY(90deg)  translateZ(66px)}
.face.left  {transform:rotateY(-90deg) translateZ(66px)}
.face.top   {transform:rotateX(90deg)  translateZ(66px)}
.face.bottom{transform:rotateX(-90deg) translateZ(66px)}

/* ---------- Tier content ---------- */
.tier-head{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;margin-bottom:.35rem}
.tier-name{font-size:1.35rem;font-weight:700}
.tier-tag{font-size:.68rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:rgb(var(--a1));background:rgba(var(--a1),.12);border:1px solid rgba(var(--a1),.3);padding:.22rem .55rem;border-radius:100px}
.tier-slogan{font-family:"Space Grotesk";font-size:1.05rem;color:var(--text);margin-bottom:.6rem}
.tier-desc{color:var(--muted);font-size:.95rem;margin-bottom:1.3rem;min-height:4.8em}
.tier-save{font-size:.95rem;color:var(--muted);margin-bottom:1.3rem}
.tier-save .pct{font-family:"Space Grotesk";font-size:1.7rem;font-weight:700;color:rgb(var(--a1));margin-right:.35rem;vertical-align:-2px}
.tier-specs{list-style:none;display:flex;flex-direction:column;gap:.55rem;margin-bottom:1.7rem}
.tier-specs li{display:flex;justify-content:space-between;align-items:center;font-size:.92rem;padding-bottom:.55rem;border-bottom:1px solid var(--border)}
.tier-specs li:last-child{border-bottom:none;padding-bottom:0}
.tier-specs span{color:var(--muted-2)}
.tier-specs b{font-weight:600}
.btn-tier{width:100%;color:var(--text);background:rgba(var(--a1),.12);border:1px solid rgba(var(--a1),.4)}
.btn-tier:hover{background:rgba(var(--a1),.2);transform:translateY(-2px);box-shadow:0 10px 26px -10px rgba(var(--a1),.7)}

/* ---------- Why ---------- */
.why{max-width:var(--maxw);margin:0 auto;padding:4rem 1.5rem}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.why-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2rem 1.7rem;transition:transform .2s,border-color .3s,background .3s}
.why-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.18);background:var(--surface-2)}
.why-icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:1.5rem;margin-bottom:1.2rem;border:1px solid var(--border)}
.icon-save{color:#2ee6f0;background:rgba(46,230,240,.1)}
.icon-lock{color:#8b7bff;background:rgba(139,123,255,.1)}
.icon-shield{color:#f5af46;background:rgba(245,175,70,.1)}
.why-card h3{font-size:1.2rem;font-weight:600;margin-bottom:.55rem}
.why-card p{color:var(--muted);font-size:.95rem}

/* ---------- CTA ---------- */
.cta{max-width:var(--maxw);margin:2rem auto 5rem;padding:0 1.5rem}
.cta-inner{
  text-align:center;padding:4rem 2rem;border-radius:28px;
  background:
    radial-gradient(120% 140% at 50% 0%,rgba(124,108,255,.22),transparent 60%),
    linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--border);
}
.cta-inner h2{font-size:clamp(1.9rem,4vw,2.8rem);font-weight:600;margin-bottom:.7rem}
.cta-inner p{color:var(--muted);font-size:1.08rem;margin-bottom:1.9rem}
.cta-inner .hero-cta{justify-content:center}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--border);background:var(--bg-2)}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:2.4rem 1.5rem;display:flex;flex-direction:column;gap:1rem;align-items:flex-start}
.footer-fine{color:var(--muted-2);font-size:.82rem;max-width:720px}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .cube-grid,.why-grid{grid-template-columns:1fr;gap:1.3rem}
  .nav-links{display:none}
  .tier-desc{min-height:0}
}
@media(prefers-reduced-motion:reduce){
  .cube{animation:none}
  .reveal{transition:none;opacity:1;transform:none}
}