/** Shopify CDN: Minification failed

Line 218:20 Unexpected "/"

**/
:root {
  --blue-900: #0009B7;
  --blue-700: #040FDB;
  --blue-500: #3448E8;
  --sky:  #6DDAF0;
  --violet: #CDA7D8;
  --lilac: #DB88F2;
  --white: #ffffff;
  --off-white: #F4F4FF;
  --dark: #05060F;
  --display: 'ZT Talk', 'Inter', sans-serif;
  --body: 'ZT Talk', 'Inter', sans-serif;
  --mono: 'Space Mono', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--white);
  color: var(--dark);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── CUSTOM CURSOR ─── */
.cursor {
  position: fixed;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--white);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%,-50%);
  transition: width 0.2s ease, height 0.2s ease;
  mix-blend-mode: difference;
}
.cursor-ring {
  position: fixed;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.5);
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%,-50%);
  transition: width 0.25s ease, height 0.25s ease;
  mix-blend-mode: difference;
}
.cursor.big { width: 22px; height: 22px; }
.cursor-ring.big { width: 60px; height: 60px; }
@media (hover: none) { .cursor, .cursor-ring { display: none; } body { cursor: auto; } }

/* ─── HERO (restore float-eq + keep products visible) ─── */
#hero {
  height: 100vh;
  min-height: 700px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--blue-700);
  isolation: isolate; /* new stacking context */
}

/* background grid (behind everything) */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  animation: gridPulse 8s ease-in-out infinite;
  z-index: 0;
  pointer-events: none;
}

/* halos (visual only) */
.hero-halo { position: absolute; border-radius: 50%; pointer-events: none; z-index: 0; }
.hero-halo-1 { width: 600px; height: 600px; top: -200px; right: 0; background: radial-gradient(circle, rgba(205,167,216,0.3) 0%, transparent 65%); }

/* FLOATING EQUATIONS container — visible but non-interactive */
/* Keep this on the left half by default; JS can inject .float-eq elements inside */
#floatEqContainer {
  position: absolute !important;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: visible; /* allow equations to float outside slightly */
  pointer-events: none; /* never block clicks */
  z-index: 2; /* above background, below main content */
  mix-blend-mode: screen;
}

@media (max-width: 900px) {
  #hero {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 100svh;
  }

  .hero-text {
    padding: 5rem 1.5rem 1rem;
    text-align: center;
  }

  .hero-actions { justify-content: center; }
  .hero-note { font-size: 0.72rem; }

  .hero-image-stage {
    height: auto;
    min-height: unset;
    padding: 0 0 1rem 0;
    justify-content: flex-start;
  }

  /* Force flex — override the base grid */
  .products-grid-hero {
    display: flex !important;
    flex-wrap: nowrap !important;
    flex-direction: row !important;
    overflow-x: auto !important;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 10px;
    padding: 0 1rem 0.5rem 1rem;
    max-width: none;
    width: 100%;
  }
  .products-grid-hero::-webkit-scrollbar { display: none; }

  

  .products-grid-hero .product-card {
    flex: 0 0 155px !important;
    max-height: 240px;
  }
  .products-grid-hero .product-img-wrap { height: 100px !important; }

  .hero-shop-all { display: none; }
  #floatEqContainer { width: 100%; overflow: hidden; }

  .nav-links { display: none; }
  section { padding: 5rem 1.2rem; }
  .merch-mosaic { grid-template-columns: 1fr; grid-template-rows: auto; }
  .mosaic-cell { min-height: 280px; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-right { align-items: flex-start; text-align: left; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}
/* floating equation items (used by your JS) */
.float-eq {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: rgba(255,255,255,0.14);
  pointer-events: none;
  white-space: nowrap;
  animation: floatEq 9s ease-in-out infinite;
  z-index: 2; /* sits with the container */
  transform-origin: center;
  will-change: transform, opacity;
}

/* alternate style for light-themed sections */
.float-eq-dark {
  position: absolute;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: rgba(4,15,219,0.09);
  pointer-events: none;
  white-space: nowrap;
  animation: floatEq 9s ease-in-out infinite;
  z-index: 2;
}

/* float animation */
@keyframes floatEq {
  0%,100% { transform: translateY(0) rotate(-0.5deg); opacity: 0.95; }
  50%    { transform: translateY(-14px) rotate(0.5deg); opacity: 1; }
}

/* HERO TEXT (left column) — above equations */
.hero-text {
  padding: 9rem 3rem 6rem 6rem;
  position: relative;
  z-index: 4;
  text-align: center;
}

/* keep original badge/title/sub styles (condensed here) */
.hero-badge { display:inline-flex; align-items:center; gap:.45rem; font-weight:700; font-size:.72rem; text-transform:uppercase; color:var(--sky); border-radius:100px; padding:.4rem 1rem; background: rgba(109,218,240,0.08); border:1.5px solid rgba(109,218,240,0.4); z-index:4; margin-bottom:1.2rem; }.badge-dot { width:7px; height:7px; border-radius:50%; background:var(--sky); animation:pulse 2s ease-in-out infinite; }
h1.hero-title { font-family:var(--display); font-weight:700; font-size:clamp(3rem,5.8vw,5.5rem); line-height:.95; color:var(--white); margin-bottom:1.4rem; text-transform:uppercase; z-index:4; }
.title-accent { color:var(--sky); display:inline-block; font-style:italic; position:relative; z-index:4; }
.title-accent::after { content:''; position:absolute; bottom:-4px; left:0; right:0; height:4px; background:var(--sky); border-radius:2px; transform:scaleX(0); transform-origin:left; animation:underlineIn .6s .7s ease forwards; }
.hero-sub {
  font-size: 1.05rem; 
  color: rgba(255,255,255,0.72); 
  max-width: 460px; 
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 4rem; 
  line-height: 1.6; 
  z-index: 4;
  text-align: center;
} actions and note */
.hero-actions { display:flex; gap:1rem; z-index:4; }
.btn-primary { background:var(--white); color:var(--blue-900); padding:.95rem 2.2rem; border-radius:100px; font-weight:700; z-index:4; }
.btn-ghost { color:var(--white); padding:.95rem 2.2rem; border-radius:100px; border:1.5px solid rgba(255,255,255,0.35); z-index:4; }
.hero-note { margin-top:1.6rem; font-size:.78rem; color:rgba(255,255,255,0.42); z-index:4; }

/* ─── HERO RIGHT COLUMN — product cards ─── */
.hero-image-stage {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem 2rem;
  z-index: 5;
  gap: 10px;
  overflow: hidden;
}
.products-grid-hero {
  position: relative;
  z-index: 6;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 100%;
  max-width: 520px;
  overflow: hidden
}
.products-grid-hero .product-card {
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,0.97);
  border: 2px solid rgba(255,255,255,0.18);
  border-radius: 16px;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
  text-decoration: none;
  color: inherit;
  position: relative;
}
.products-grid-hero .product-card:hover { transform: translateY(-5px); box-shadow: 0 18px 50px rgba(0,0,0,0.3); }
.products-grid-hero .product-img-wrap { height: 150px; overflow: hidden; flex-shrink: 0; position: relative; }
.products-grid-hero .product-img-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; }
.products-grid-hero .product-info { padding: 10px 12px 12px; flex: 1; display: flex; flex-direction: column; }
.products-grid-hero .product-phenomenon { font-size: 0.6rem; }
.products-grid-hero .product-name { font-size: 0.8rem; margin: 2px 0 6px; line-height: 1.2; }
.products-grid-hero .product-desc { display: none; }
.products-grid-hero .product-footer { display: flex; justify-content: space-between; align-items: center; gap: 6px; margin-top: auto; }
.products-grid-hero .product-price { font-size: 0.95rem; }
.products-grid-hero .product-buy { background: var(--blue-700); color: var(--white); border-radius: 100px; padding: 0.3rem 0.75rem; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; font-family: var(--display); white-space: nowrap; cursor: pointer; }
.hero-shop-all { width: 100%; max-width: 520px; text-align: right; }
.hero-shop-all a { color: rgba(255,255,255,0.45); font-family: var(--display); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none; transition: color 0.2s; }
.hero-shop-all a:hover { color: var(--sky); }


/* misc animations */
@keyframes gridPulse { 0%,100%{opacity:.5} 50%{opacity:1} }
@keyframes underlineIn { to { transform: scaleX(1); } }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }

/* ─── MARQUEE ─── */
#marquee-band { 
  background: var(--sky); 
  padding: 0.85rem 0; 
  overflow: hidden; 
  border-top: 2rem solid var(--blue-700);
}
.marquee-inner { display: flex; gap: 0; width: max-content; animation: marquee 25s linear infinite; }
.marquee-item {
  display: flex; align-items: center; gap: 1.2rem;
  padding: 0 2rem;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--blue-900);
  white-space: nowrap;
  text-transform: uppercase;
}
.marquee-item img { height: 26px; width: auto; opacity: 0.85; }
.marquee-sep { opacity: 0.4; font-size: 0.7rem; }
@keyframes marquee { from{transform:translateX(0)} to{transform:translateX(-50%)} }


/* ─── SECTION BASE ─── */
section { padding: 7rem 2rem; }
.container { max-width: 1100px; margin: 0 auto; }
.section-label {
  font-family: var(--body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}
.label-blue { color: var(--blue-700); }
.label-sky  { color: var(--sky); }
h2.section-title {
  font-family: var(--display);
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}
.title-white { color: var(--white); }
.title-dark  { color: var(--dark); }
.section-desc { max-width: 540px; font-size: 1.02rem; line-height: 1.65; }
.desc-white { color: rgba(255,255,255,0.65); }
.desc-muted { color: rgba(5,6,15,0.55); }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ─── HOW IT WORKS ─── */
#how { background: var(--off-white); }
/* ─── HOW IT WORKS ─── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* always 4 on large screens */
  gap: 1.5rem;
  margin-top: 3.5rem;
}

/* 2×2 on medium and small screens */
@media (max-width: 900px) {
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* stay 2×2 even on mobile — only go 1 column on very small screens */
@media (max-width: 380px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }
}
.step-card {
  background: var(--white);
  border: 2px solid transparent;
  border-radius: 20px;
  padding: 2.2rem 1.8rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
  box-shadow: 0 2px 12px rgba(0,9,183,0.06);
}
.step-card:hover {
  border-color: var(--blue-700);
  transform: translateY(-6px);
  box-shadow: 0 14px 40px rgba(0,9,183,0.12);
}
/* step icon background — light blue tint, blue artwork inside reads perfectly */
.step-ill-wrap {
  width: 76px; height: 76px;
  border-radius: 16px;
  background: rgba(4,15,219,0.07);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.4rem;
  transition: background 0.25s;
}
.step-card:hover .step-ill-wrap { background: rgba(4,15,219,0.12); }
.step-ill-wrap img {
  width: 52px; height: 52px;
  object-fit: contain;
}
.step-num {
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--blue-700);
  letter-spacing: 0.18em;
  margin-bottom: 0.6rem;
  opacity: 0.5;
}
.step-title {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}
.step-text { font-size: 0.92rem; color: rgba(5,6,15,0.55); line-height: 1.65; font-weight: 400; }

/* ─── EXPLAINER (with QR chooser) ─── */
#explainer { background: var(--blue-900); overflow: hidden; }

/* NEW: Two-column header layout */
.explainer-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 2.5rem;
}
.explainer-header-text { text-align: left; }
.explainer-header-text .section-desc { 
  text-align: left; 
  margin-left: 0; 
  margin-right: 0; 
}
.explainer-header h2.section-title { text-align: left; }

@media (max-width: 900px) {
  .explainer-header {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    text-align: center;
  }
  .explainer-header-text,
  .explainer-header-text .section-desc,
  .explainer-header h2.section-title { text-align: center; }
}

/* QR chooser — stacked vertically, expandable */
/* QR chooser — horizontal, expandable */
.qr-chooser {
  display: flex;
  flex-direction: row;
  gap: 0.6rem;
  margin: 0;
  flex-wrap: nowrap;
  justify-content: flex-start;
  align-items: center;
}

.qr-choice {
  background: rgba(255,255,255,0.06);
  border: 2px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  cursor: pointer;
  transition: border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
  text-align: left;
  color: var(--white);
  font-family: var(--body);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-width: 0;
  overflow: hidden;
  flex-shrink: 0;
}

/* Inactive — collapsed to just the thumbnail */
.qr-choice:not(.active) .qr-choice-info {
  width: 0;
  opacity: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
  white-space: nowrap;
}

/* Active — expanded with full info */
.qr-choice.active {
  flex: 1;
  border-color: var(--sky);
  background: rgba(109,218,240,0.1);
  box-shadow: 0 8px 28px rgba(109,218,240,0.2);
  padding: 0.7rem 1rem;
}
.qr-choice.active .qr-choice-info {
  flex: 1;
  opacity: 1;
  transition: opacity 0.3s 0.15s ease;
}

.qr-choice:hover {
  border-color: var(--sky);
  background: rgba(109,218,240,0.08);
}
.qr-choice:not(.active):hover { transform: translateY(-2px); }

.qr-thumb {
  width: 60px; height: 60px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255,255,255,0.08);
  transition: width 0.4s ease, height 0.4s ease;
}
.qr-choice.active .qr-thumb {
  width: 68px; height: 68px;
}
.qr-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

.qr-choice-info {
  display: flex;
  flex-direction: column;
  transition: opacity 0.2s ease;
  min-width: 0;
}


.qr-choice:hover {
  border-color: var(--sky);
  background: rgba(109,218,240,0.08);
  transform: translateY(-3px);
}
.qr-choice.active {
  border-color: var(--sky);
  background: rgba(109,218,240,0.1);
  box-shadow: 0 8px 28px rgba(109,218,240,0.2);
}
.qr-thumb {
  width: 72px; height: 72px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255,255,255,0.08);
}
.qr-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* large scannable QR panel */
.qr-scan-panel {
  display: flex;
  flex-direction: column;
  align-items: center; /* ← already there, make sure it's not overridden */
  gap: 1rem;
  margin-top: 2rem;
  text-align: center; /* ← add this */
}
.qr-scan-panel a { display: inline-block; text-decoration: none; }
.qr-scan-box {
  width: 190px; height: 190px;
  background: var(--white);
  border-radius: 16px;
  padding: 10px;
  box-shadow: 0 8px 36px rgba(0,0,0,0.35);
  transition: transform 0.2s;
}
.qr-scan-box:hover { transform: scale(1.04); }
.qr-scan-box img { width: 100%; height: 100%; object-fit: contain; display: block; }
.qr-scan-hint {
  font-family: var(--body);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  text-align: center;
}
.qr-scan-cta {
  display: inline-block;
  background: var(--sky);
  color: var(--blue-900);
  font-family: var(--display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}
.qr-scan-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(109,218,240,0.4); }
.qr-choice-label {
  font-family: var(--body);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sky);
  margin-bottom: 0.25rem;
}
.qr-choice-name {
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}
.qr-choice-hint {
  font-size: 0.74rem;
  color: rgba(255,255,255,0.5);
  margin-top: 0.2rem;
}
@media (max-width: 768px) {
  .qr-chooser {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.4rem;
    width: 100%;
  }

  /* Inactive: shrink to just the thumbnail */
  .qr-choice:not(.active) {
    flex: 0 0 auto;
    width: auto;
    padding: 0.4rem;
  }

  /* Active: take remaining space */
  .qr-choice.active {
    flex: 1 1 auto;
    min-width: 0;
  }

  .qr-thumb { width: 48px; height: 48px; }
  .qr-choice.active .qr-thumb { width: 54px; height: 54px; }
  .qr-choice-name { font-size: 0.78rem; }
  .qr-choice-label { font-size: 0.55rem; }
  .qr-choice-hint { display: none; }
}

/* ─── QR POPUP ─── */
.qr-scan-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
}

/* The small trigger button */
.qr-popup-trigger {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255,255,255,0.07);
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  padding: 0.6rem 1rem;
  cursor: pointer;
  color: var(--white);
  font-family: var(--display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
  margin: 0 auto; /* ← add this */
}
.qr-popup-trigger:hover {
  border-color: var(--sky);
  background: rgba(109,218,240,0.1);
}
.qr-popup-trigger-thumb {
  width: 36px; height: 36px;
  background: var(--white);
  border-radius: 6px;
  padding: 3px;
  flex-shrink: 0;
}
.qr-popup-trigger-thumb img {
  width: 100%; height: 100%;
  object-fit: contain; display: block;
}

/* Overlay backdrop */
.qr-popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,9,183,0.5);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}
.qr-popup-overlay.open { display: flex; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* The popup card */
.qr-popup-card {
  background: var(--white);
  border-radius: 24px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  box-shadow: 0 24px 80px rgba(0,0,0,0.4);
  animation: popIn 0.25s cubic-bezier(0.34,1.56,0.64,1);
  position: relative;
  max-width: 320px;
  width: 90%;
}
@keyframes popIn {
  from { transform: scale(0.8); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.qr-popup-close {
  position: absolute;
  top: 0.75rem; right: 0.75rem;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: rgba(0,9,183,0.4);
  line-height: 1;
  padding: 0.25rem;
  transition: color 0.2s;
}
.qr-popup-close:hover { color: var(--blue-900); }

.qr-popup-img {
  width: 200px; height: 200px;
  object-fit: contain; display: block;
}
.qr-popup-label {
  font-family: var(--body);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(0,9,183,0.5);
  text-align: center;
}
.qr-popup-cta {
  display: inline-block;
  background: var(--blue-700);
  color: var(--white);
  font-family: var(--display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.7rem 1.8rem;
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
  width: 100%;
  text-align: center;
}
.qr-popup-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(4,15,219,0.3);
}

/* Hide popup trigger on mobile, keep scan panel as-is */
@media (max-width: 768px) {
  .qr-popup-trigger { display: none; }
  .qr-scan-panel { display: flex; }
}
@media (min-width: 769px) {
  .qr-scan-panel { display: none; }
}

.explainer-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: stretch;   /* both columns same height */
  margin-top: 1rem;
}
/* left column: flex column so explainer-content grows to fill height */
.explainer-wrap > div:first-child {
  display: flex;
  flex-direction: column;
}
.explainer-wrap > div:first-child .explainer-content {
  flex: 1;       /* grow to fill remaining space */
  min-height: 0; /* allow shrink */
}
@media(max-width:768px) {
  .explainer-wrap {
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: start; /* reset on mobile — stacking, no equal height needed */
  }
  /* animation first on mobile to grab attention */
  .viz-canvas  { order: -1; }
  .explainer-wrap > div:first-child { order: 1; display: block; }
}
.level-selector { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.level-btn {
  font-family: var(--body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  border-radius: 100px;
  border: 1.5px solid rgba(255,255,255,0.2);
  background: transparent;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  transition: all 0.2s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.level-btn.active { color: var(--blue-900); font-weight: 700; }
.level-btn[data-level="beginner"].active  { background: var(--sky); border-color: var(--sky); }
.level-btn[data-level="intermediate"].active { background: var(--violet); border-color: var(--violet); }
.level-btn[data-level="expert"].active   { background: var(--lilac); border-color: var(--lilac); }
.explainer-content {
  background: rgba(255,255,255,0.07);
  border: 1.5px solid rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 2rem;
  min-height: 240px;
  transition: border-color 0.3s;
}
.explainer-content h4 {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: -0.01em;
}
.explainer-content p { font-size: 0.95rem; color: rgba(255,255,255,0.7); line-height: 1.75; font-weight: 400; }
.formula {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--sky);
  background: rgba(109,218,240,0.1);
  border: 1px solid rgba(109,218,240,0.25);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  margin-top: 1.2rem;
  display: block;
  overflow-x: auto;
}


.viz-canvas {
  background: rgba(255,255,255,0.05);
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  width: 100%;          /* fill grid column */
  max-height: 520px;    /* never taller than the section */
  min-height: 280px;
  align-self: start;    /* don't stretch to match left column */
}
canvas#quantumCanvas { width: 100%; height: 100%; display: block; }

/* ─── PRODUCTS ─── */
#products { background: var(--white); }
.products-header {
  display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 1rem;
  margin-bottom: 3rem;
}
.products-header-link {
  font-family: var(--display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--blue-700);
  text-decoration: none;
  border-bottom: 2px solid var(--blue-700);
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.products-header-link:hover { opacity: 0.7; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.product-card {
  background: var(--white);
  border: 2px solid var(--off-white);
  border-radius: 20px;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), border-color 0.25s, box-shadow 0.3s;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-10px) scale(1.01);
  border-color: var(--blue-700);
  box-shadow: 0 20px 50px rgba(4,15,219,0.14);
}
.product-img-wrap {
  aspect-ratio: 1;
  background: var(--off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-img-wrap img { transform: scale(1.05); }
.product-badge {
  position: absolute;
  top: 0.75rem; left: 0.75rem;
  font-family: var(--body);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--sky);
  color: var(--blue-900);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  z-index: 2;
}
.product-info { padding: 1.4rem 1.4rem 1.5rem; flex: 1; display: flex; flex-direction: column; }
.product-phenomenon { font-family: var(--body); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--blue-700); margin-bottom: 0.3rem; text-align: center }
.product-name {
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--dark);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.product-desc { font-size: 0.83rem; color: rgba(5,6,15,0.5); line-height: 1.55; flex: 1; margin-bottom: 1.2rem; font-weight: 400; }
.product-footer { display: flex; align-items: center; justify-content: space-between; }
.product-price { font-family: var(--display); font-size: 1.2rem; font-weight: 700; color: var(--blue-900); }
.product-buy {
  background: var(--blue-700);
  color: var(--white);
  border: none;
  border-radius: 100px;
  padding: 0.55rem 1.2rem;
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
}
.product-buy:hover { background: var(--blue-900); transform: scale(1.05); }

/* ─── MERCH MOSAIC ─── */
#merch-visual { background: var(--off-white); padding: 0; overflow: hidden; }
.merch-mosaic {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  grid-template-rows: 500px;
  gap: 0;
}
.mosaic-cell { overflow: hidden; position: relative; }
.mosaic-cell img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; display: block; }
.mosaic-cell:hover img { transform: scale(1.06); }
.mosaic-main { grid-column: 1; grid-row: 1; }
.mosaic-grid-right {
  grid-column: 2 / 4;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 0;
}
.mosaic-sub {
  background: var(--blue-700);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  overflow: hidden;
  position: relative;
}
.mosaic-sub img {
  max-height: 75%;
  max-width: 75%;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: transform 0.5s ease;
  filter: drop-shadow(0 10px 30px rgba(0,0,0,0.4));
}
.mosaic-sub.invert img {
  /* convert blue artwork to white silhouette for dark backgrounds */
  filter: brightness(0) invert(1) drop-shadow(0 10px 30px rgba(0,0,0,0.4));
}
.mosaic-sub:hover img { transform: scale(1.08) rotate(-2deg); }
.mosaic-sub.alt { background: var(--blue-900); }
.mosaic-sub.light { background: var(--white); }
.mosaic-sub.light img { filter: drop-shadow(0 10px 30px rgba(4,15,219,0.15)); }
.mosaic-label {
  position: absolute;
  bottom: 1rem; left: 1rem;
  font-family: var(--display);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}
.mosaic-label.dark { color: rgba(5,6,15,0.4); }

/* ─── STATS ─── */
#stats { background: var(--blue-700); padding: 5rem 2rem; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  text-align: center;
}
.stat-num { font-family: var(--display); font-size: 3.5rem; font-weight: 700; color: var(--white); line-height: 1; margin-bottom: 0.4rem; letter-spacing: -0.04em; }
.stat-num span { color: var(--sky); }
.stat-label { font-size: 0.84rem; color: rgba(255,255,255,0.62); font-weight: 500; letter-spacing: 0.02em; }

/* ─── QR FEATURE ─── */
#qr-feature { background: var(--off-white); }
.qr-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
@media(max-width:768px) { .qr-inner { grid-template-columns: 1fr; gap: 2.5rem; } }
.qr-mockup { background: var(--white); border: 2px solid rgba(4,15,219,0.1); border-radius: 24px; padding: 2.2rem; box-shadow: 0 8px 40px rgba(4,15,219,0.07); }
.qr-scan-demo { background: var(--blue-700); border-radius: 14px; padding: 2rem; text-align: center; margin-bottom: 1.4rem; }
.qr-real {
  width: 130px; height: 130px;
  background: var(--white);
  border-radius: 10px;
  padding: 8px;
  margin: 0 auto 1rem;
}
.qr-real img { width: 100%; height: 100%; object-fit: contain; display: block; }
.qr-scan-label { font-family: var(--body); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em; color: rgba(255,255,255,0.7); text-transform: uppercase; }
.level-cards { display: flex; flex-direction: column; gap: 0.75rem; }
.level-card { background: var(--off-white); border: 1.5px solid transparent; border-radius: 12px; padding: 0.9rem 1rem; display: flex; align-items: flex-start; gap: 0.75rem; cursor: pointer; touch-action: manipulation; transition: border-color 0.2s, background 0.2s; }
.level-card:hover { border-color: var(--blue-700); background: rgba(4,15,219,0.04); }
.level-card.active-card { border-color: var(--blue-700); background: rgba(4,15,219,0.06); }
.level-dot { width: 11px; height: 11px; border-radius: 50%; flex-shrink: 0; margin-top: 5px; }
.level-dot.d-beginner { background: var(--sky); }
.level-dot.d-intermediate { background: var(--blue-700); }
.level-dot.d-expert { background: var(--lilac); }
.level-card-title { font-family: var(--display); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.04em; color: var(--dark); text-transform: uppercase; margin-bottom: 0.2rem; }
.level-card-text { font-size: 0.83rem; color: rgba(5,6,15,0.52); line-height: 1.55; }

/* ─── TESTIMONIALS ─── */
#social { background: var(--white); }
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 3.5rem; }
.review-card { background: var(--off-white); border: 2px solid transparent; border-radius: 20px; padding: 1.8rem 1.6rem; transition: border-color 0.25s, transform 0.25s; }
.review-card:hover { border-color: var(--blue-700); transform: translateY(-4px); }
.review-stars { color: #F7B731; font-size: 0.9rem; letter-spacing: 0.1em; margin-bottom: 0.75rem; }
.review-text { font-size: 0.94rem; color: var(--dark); line-height: 1.7; margin-bottom: 1.2rem; font-weight: 400; }
.review-author { display: flex; align-items: center; gap: 0.6rem; }
.review-avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--blue-700); display: flex; align-items: center; justify-content: center; font-family: var(--display); font-size: 0.85rem; font-weight: 700; color: var(--white); }
.review-meta { display: flex; flex-direction: column; }
.review-name { font-family: var(--display); font-size: 0.82rem; font-weight: 700; color: var(--dark); text-transform: uppercase; letter-spacing: 0.02em; }
.review-role { font-size: 0.74rem; color: rgba(5,6,15,0.45); }

/* ─── FAQ ─── */
#faq { background: var(--off-white); }
.faq-list { margin-top: 3rem; max-width: 720px; }
.faq-item { border-bottom: 1.5px solid rgba(4,15,219,0.1); }
.faq-q { width: 100%; background: none; border: none; color: var(--dark); font-family: var(--body); font-size: 1rem; font-weight: 600; text-align: left; padding: 1.3rem 0; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 1rem; transition: color 0.2s; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.faq-q:hover { color: var(--blue-700); }
.faq-chevron { font-size: 1.4rem; color: var(--blue-700); transition: transform 0.3s; flex-shrink: 0; font-weight: 700; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-a-inner { font-size: 0.93rem; color: rgba(5,6,15,0.6); line-height: 1.75; padding-bottom: 1.3rem; font-weight: 400; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-item.open .faq-chevron { transform: rotate(45deg); }

/* ─── CTA ─── */
#cta { background: var(--blue-700); text-align: center; padding: 8rem 2rem; position: relative; overflow: hidden; }
.cta-bg-mark { position: absolute; font-family: var(--display); font-weight: 700; font-size: clamp(10rem, 25vw, 20rem); color: rgba(255,255,255,0.04); top: 50%; left: 50%; transform: translate(-50%, -50%); letter-spacing: -0.05em; pointer-events: none; white-space: nowrap; }
.cta-label { font-family: var(--body); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.24em; text-transform: uppercase; color: var(--sky); margin-bottom: 1.5rem; }
#cta h2 { font-family: var(--display); font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 700; line-height: 1.0; letter-spacing: -0.02em; color: var(--white); margin-bottom: 1rem; text-transform: uppercase; }
#cta h2 em { font-style: italic; color: var(--sky); }
.cta-sub { font-size: 1.02rem; color: rgba(255,255,255,0.65); max-width: 460px; margin: 0 auto 2.5rem; line-height: 1.6; font-weight: 400; }
.sub-form { display: flex; gap: 0.6rem; max-width: 440px; margin: 0 auto; flex-wrap: wrap; justify-content: center; }
.sub-input { flex: 1; min-width: 200px; padding: 0.9rem 1.4rem; border-radius: 100px; border: 1.5px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.1); color: var(--white); font-family: var(--body); font-size: 0.92rem; outline: none; transition: border-color 0.2s; }
.sub-input::placeholder { color: rgba(255,255,255,0.4); }
.sub-input:focus { border-color: var(--sky); }
.sub-btn { background: var(--white); color: var(--blue-900); border: none; border-radius: 100px; padding: 0.9rem 1.8rem; font-family: var(--display); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.05em; text-transform: uppercase; cursor: pointer; transition: transform 0.15s, box-shadow 0.15s; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.sub-btn:hover { transform: scale(1.04); box-shadow: 0 6px 20px rgba(0,0,0,0.2);   color: #000 !important; }
#subConfirm { margin-top: 1rem; font-size: 0.85rem; color: var(--sky); min-height: 1.2em; }

.sub-input:hover {
  color: #000;
}

.sub-input:hover::placeholder {
  color: #000 !important;
}

.sub-input:focus {
  border-color: var(--sky);
  color: var(--dark);
  background: rgba(255,255,255,0.9);
}

/* ─── FOOTER ─── */
footer { background: var(--blue-900); padding: 3rem 2rem 2rem; border-top: 1px solid rgba(255,255,255,0.08); }
.footer-inner { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr auto; gap: 3rem; align-items: start; }
.footer-logo img { height: 32px; width: auto; }
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem 2rem;
  list-style: none;
}
.footer-links a { font-size: 0.82rem; color: rgba(255,255,255,0.55); text-decoration: none; transition: color 0.2s; font-weight: 400; }
.footer-links a:hover { color: var(--white); }
.footer-right { text-align: right; display: flex; flex-direction: column; gap: 0.6rem; align-items: flex-end; }
.footer-social { display: flex; gap: 0.8rem; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: all 0.2s;
  text-decoration: none;
}
.footer-social a:hover { border-color: var(--white); color: var(--white); transform: translateY(-2px); }
.footer-bottom {
  max-width: 1100px;
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
}
.footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: none; }
.footer-bottom a:hover { color: var(--white); }
.footer-policies { display: flex; gap: 1.2rem; flex-wrap: wrap; }

/* ─── RESPONSIVE ─── */
@media(max-width:900px) {
  #hero { grid-template-columns: 1fr; min-height: 100svh; }
  .hero-text { padding: 7rem 1.5rem 2rem; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-image-stage { height: 50vw; min-height: 320px; }
  .nav-links { display: none; }
  section { padding: 5rem 1.2rem; }
  .merch-mosaic { grid-template-columns: 1fr; grid-template-rows: auto; }
  .mosaic-cell { min-height: 280px; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-right { align-items: flex-start; text-align: left; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

/* ═══════════════════════════════════════════
   MOBILE — full overhaul (≤ 600 px)
═══════════════════════════════════════════ */
@media(max-width:600px) {

  /* ── global spacing ── */
  section { padding: 3.5rem 1rem; }
  .container { padding: 0 0.25rem; }

  /* ── nav ── */
  nav { padding: 0.9rem 1.2rem; }
  nav.scrolled { padding: 0.6rem 1.2rem; }
  .nav-cta { padding: 0.45rem 1rem; font-size: 0.75rem; }

  /* ── hero ── */
  h1.hero-title { font-size: clamp(2.4rem, 11vw, 3.5rem); }
  .hero-text { padding: 6rem 1.2rem 1.5rem; }
  .hero-sub { font-size: 0.93rem; }
  /* hero-image-stage height is controlled by the 900px block */
  .btn-primary, .btn-ghost { padding: 0.8rem 1.6rem; font-size: 0.82rem; }
  .hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  /* ── section headings ── */
  h2.section-title { font-size: clamp(1.7rem, 8vw, 2.4rem); }

  /* ── how it works ── */
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .step-card { padding: 1.4rem 1rem; }

  /* ── explainer ── */
  #explainer { padding: 3rem 1rem 4rem; }

  /* chooser buttons: horizontal on mobile */
  .qr-chooser {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0.4rem;
    margin: 1rem 0 1.5rem;
  }
  .qr-choice:not(.active) {
    flex: 0 0 auto;
    width: auto;
    padding: 0.4rem;
  }
  .qr-choice.active {
    flex: 1 1 auto;
    min-width: 0;
    padding: 0.6rem 0.8rem;
  }
  .qr-thumb { width: 48px; height: 48px; }
  .qr-choice.active .qr-thumb { width: 54px; height: 54px; }
  .qr-choice-hint { display: none; }
  .qr-choice-name { font-size: 0.75rem; }
  .qr-choice-label { font-size: 0.55rem; }
  /* explainer — canvas already ordered first via the 768px rule above */
  .viz-canvas {
    aspect-ratio: unset;
    height: 260px;
    min-height: unset;
  }

  /* level buttons: full width row */
  .level-selector { gap: 0.4rem; }
  .level-btn { font-size: 0.68rem; padding: 0.4rem 0.75rem; }

  /* explainer text box */
  .explainer-content { padding: 1.4rem 1.1rem; min-height: unset; }
  .explainer-content h4 { font-size: 0.95rem; }
  .explainer-content p { font-size: 0.88rem; }
  .formula { font-size: 0.78rem; padding: 0.6rem 0.8rem; }

  /* large QR panel: center & prominent */
  .qr-scan-panel { margin-top: 1.5rem; }
  .qr-scan-box { width: 160px; height: 160px; }

  /* ── products ── */
  .products-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .product-name { font-size: 0.88rem; }
  .product-desc { font-size: 0.78rem; }
  .product-price { font-size: 1rem; }
  .product-buy { padding: 0.45rem 0.9rem; font-size: 0.72rem; }

  /* ── mosaic ── */
  .merch-mosaic { grid-template-columns: 1fr; }
  .mosaic-grid-right { grid-template-columns: 1fr 1fr; }

  /* ── stats ── */
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .stat-num { font-size: 2.6rem; }

  /* ── qr-feature section ── */
  .qr-inner { grid-template-columns: 1fr; gap: 2rem; }
  .qr-real { width: 100px; height: 100px; }

  /* ── reviews ── */
  .reviews-grid { grid-template-columns: 1fr; }

  /* ── faq ── */
  .faq-q { font-size: 0.9rem; }

  /* ── cta / email ── */
  #cta { padding: 5rem 1rem; }
  .sub-form { flex-direction: column; align-items: stretch; }
  .sub-input, .sub-btn { width: 100%; text-align: center; }
  

  /* ── footer ── */
  footer { padding: 2.5rem 1rem 1.5rem; }
  .footer-inner { gap: 1.5rem; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 0.75rem 1rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; }
  .footer-policies { gap: 0.75rem; }
}

/* ── very small screens (≤ 380 px) ── */
@media(max-width:380px) {
  .steps-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  h1.hero-title { font-size: 2.2rem; }
}