:root {
  --bg: #0b0f1a;
  --panel: rgba(15, 22, 38, 0.86);
  --panel-soft: rgba(19, 27, 46, 0.75);
  --text: #f5f7ff;
  --muted: #9aa4b2;
  --line: rgba(255,255,255,0.09);
  --cyan: #00eaff;
  --purple: #7a00ff;
  --pink: #ff2fd1;
  --shadow: 0 20px 60px rgba(0,0,0,0.35);
  --radius: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(122,0,255,0.22), transparent 28%),
    radial-gradient(circle at top left, rgba(0,234,255,0.18), transparent 22%),
    linear-gradient(180deg, #08111f 0%, #0b0f1a 55%, #090d17 100%);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1200px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(7, 11, 20, 0.72);
  border-bottom: 1px solid var(--line);
}
.nav-wrap {
  display: grid; grid-template-columns: auto 1fr auto; gap: 24px;
  align-items: center; padding: 16px 0;
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; }
.brand-mark {
  width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px;
  background: linear-gradient(135deg, rgba(0,234,255,.18), rgba(122,0,255,.26));
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 0 30px rgba(0,234,255,.12);
}
.main-nav { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.main-nav a, .nav-actions a { color: var(--muted); }
.main-nav a.active, .main-nav a:hover, .nav-actions a:hover { color: var(--text); }
.nav-actions { display: flex; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 18px; border-radius: 14px; font-weight: 700;
  transition: .2s ease; border: 1px solid transparent;
}
.btn-primary {
  color: white;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  box-shadow: 0 10px 24px rgba(0,234,255,.15), 0 10px 28px rgba(122,0,255,.18);
}
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn-ghost { border-color: rgba(255,255,255,.14); background: rgba(255,255,255,.03); }
.hero, .subhero { padding: 84px 0 40px; }
.hero-grid, .two-col {
  display: grid; grid-template-columns: 1.08fr .92fr; gap: 28px; align-items: center;
}
.eyebrow {
  color: var(--cyan); letter-spacing: .12em; font-size: .8rem; font-weight: 800;
  margin: 0 0 12px; text-transform: uppercase;
}
h1 { font-size: clamp(2.5rem, 4.6vw, 4.4rem); line-height: 1.04; margin: 0 0 18px; }
h2 { font-size: clamp(1.7rem, 2.8vw, 2.6rem); margin: 0 0 14px; }
h3 { margin: 0 0 10px; font-size: 1.2rem; }
p { color: var(--muted); line-height: 1.7; }
.hero-text { font-size: 1.08rem; max-width: 62ch; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 26px; }
.hero-badges, .check-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.hero-badges li, .check-list li {
  padding: 10px 14px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid var(--line); color: var(--text);
}
.hero-art-card, .card {
  background: linear-gradient(180deg, rgba(18,24,42,.9), rgba(9,14,26,.9));
  border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius); box-shadow: var(--shadow);
}
.hero-art-card { padding: 18px; }
.section { padding: 34px 0 44px; }
.section.alt { background: rgba(255,255,255,.02); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { margin-bottom: 22px; max-width: 70ch; }
.card-grid { display: grid; gap: 18px; }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.card { padding: 24px; }
.feature-card { min-height: 100%; }
.center-y { align-items: center; }
.stats-card { display: grid; gap: 16px; }
.stats-card strong { display: block; font-size: 1.2rem; margin-bottom: 6px; }
.prose { max-width: 80ch; }
.site-footer { border-top: 1px solid var(--line); padding: 30px 0 40px; margin-top: 30px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 22px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }
@media (max-width: 980px) {
  .nav-wrap, .hero-grid, .two-col, .footer-grid, .card-grid.four { grid-template-columns: 1fr; }
  .main-nav { justify-content: flex-start; }
  .nav-actions { flex-wrap: wrap; }
  h1 { font-size: clamp(2rem, 10vw, 3.2rem); }
}
.page-hero { padding: 72px 0 24px; }
.narrow { width: min(920px, calc(100% - 32px)); margin: 0 auto; }
.page-section { padding-top: 20px; }
.prose p, .prose li { font-size: 1.02rem; }
.prose h2 { margin-top: 30px; }
.prose h3 { margin-top: 22px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.top-gap { margin-top: 18px; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted);
}
.admin-link { display: block; transition: transform .18s ease, border-color .18s ease; }
.admin-link:hover { transform: translateY(-3px); border-color: rgba(0,234,255,.36); }
code {
  background: rgba(255,255,255,.06); padding: 2px 6px; border-radius: 8px; color: #dffcff;
}
@media (max-width: 980px) {
  .card-grid.two { grid-template-columns: 1fr; }
}


/* v3 additions */
.stack-row{display:flex;gap:1rem;align-items:center}.stack-row.between{justify-content:space-between}.top-gap{margin-top:1.25rem}.top-gap-small{margin-top:.75rem}.top-gap-large{margin-top:2rem}.start-y{align-items:start}.pill{display:inline-flex;padding:.35rem .7rem;border:1px solid rgba(0,234,255,.25);border-radius:999px;background:rgba(0,234,255,.08);font-size:.85rem}.price-tag,.price-large{font-weight:800}.price-large{font-size:2rem}.product-card h2{margin:0 0 .5rem}.auth-screen{min-height:100vh;display:grid;place-items:center}.auth-card{max-width:560px;margin-inline:auto}.form-grid{display:grid;gap:1rem}.form-grid input{width:100%;padding:.9rem 1rem;border-radius:14px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);color:#fff}.alert.error{padding:.9rem 1rem;border-radius:14px;background:rgba(255,80,80,.12);border:1px solid rgba(255,80,80,.3)}.is-disabled{pointer-events:none;opacity:.55}.compact li{margin-bottom:.5rem}

/* v4 additions */
.button-row{display:flex;gap:12px;flex-wrap:wrap}
.feature-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.feature-list li{display:flex;justify-content:space-between;gap:16px;padding:12px 14px;border-radius:16px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08)}
.feature-list li strong{color:var(--text)}
.muted{color:var(--muted)}
.success-box{padding:1rem 1.1rem;border-radius:16px;background:rgba(0,234,255,.12);border:1px solid rgba(0,234,255,.3);color:#dffcff}
.stat-card{text-align:center}
.stat-card .stat-value{display:block;font-size:2rem;font-weight:800;color:#fff;margin-bottom:6px}
.stack-list{display:grid;gap:10px}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th,.admin-table td{padding:12px 10px;border-bottom:1px solid rgba(255,255,255,.08);text-align:left;color:var(--muted)}
.admin-table th{color:#fff}