:root {
  --bg: #0a0a0b;
  --bg-soft: #111114;
  --bg-muted: #16161a;
  --bg-elev: #18181d;
  --text: #f4f4f5;
  --text-muted: #a1a1aa;
  --text-subtle: #71717a;
  --border: #26262c;
  --border-strong: #3a3a42;
  --accent: #c6f432;          /* bright lime */
  --accent-2: #a3e635;
  --accent-ink: #0a0a0b;      /* text on accent bg */
  --accent-soft: rgba(198, 244, 50, 0.08);
  --accent-glow: rgba(198, 244, 50, 0.35);
  --shadow-sm: 0 1px 0 rgba(255,255,255,0.02), 0 1px 2px rgba(0,0,0,0.5);
  --shadow-md: 0 8px 24px -8px rgba(0,0,0,0.6);
  --shadow-lg: 0 0 0 1px rgba(198,244,50,0.18), 0 20px 50px -20px rgba(198,244,50,0.25);
  --radius: 6px;
  --radius-sm: 4px;
  --radius-lg: 10px;
  --gradient: linear-gradient(135deg, #c6f432 0%, #84cc16 60%, #22d3ee 100%);
  --gradient-soft: linear-gradient(135deg, rgba(198,244,50,0.08) 0%, rgba(34,211,238,0.05) 100%);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(1200px 600px at 80% -10%, rgba(198,244,50,0.06), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(34,211,238,0.04), transparent 60%);
  background-attachment: fixed;
}

/* subtle grid texture */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

main, section, header, nav, footer { position: relative; z-index: 1; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }

h1, h2, h3, h4 {
  color: var(--text);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 0.6em;
  font-weight: 800;
}
h1 { font-size: clamp(2.4rem, 5.2vw, 4rem); letter-spacing: -0.04em; }
h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); letter-spacing: -0.03em; }
h3 { font-size: 1.05rem; letter-spacing: -0.01em; }
p { margin: 0 0 1em; color: var(--text-muted); }
strong { color: var(--text); font-weight: 600; }
em { color: var(--text); font-style: normal; border-bottom: 1px dashed var(--border-strong); padding-bottom: 1px; }

::selection { background: var(--accent); color: var(--accent-ink); }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 11, 0.75);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-transform: uppercase;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-ink);
  box-shadow: 0 0 24px -2px var(--accent-glow);
  transition: transform 0.4s var(--ease);
}
.brand:hover .brand-mark { transform: rotate(-8deg) scale(1.05); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-links a {
  position: relative;
  display: inline-block;
  padding: 0.4rem 0.7rem;
  color: var(--text-muted);
  font-size: 0.86rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.15rem;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-soft);
}
.nav-links a.active::after { transform: scaleX(1); }

/* ---------- Layout ---------- */
.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.container-wide {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
section { padding: 4.5rem 0; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 6rem 0 4rem;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 600px;
  background:
    radial-gradient(40% 50% at 70% 30%, rgba(198,244,50,0.18), transparent 70%),
    radial-gradient(35% 45% at 20% 60%, rgba(34,211,238,0.10), transparent 70%);
  z-index: -1;
  filter: blur(10px);
  animation: drift 16s ease-in-out infinite alternate;
}
@keyframes drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-3%, 2%, 0) scale(1.05); }
}
.hero h1 { margin-bottom: 0.4em; }
.hero .gradient-text {
  background: var(--gradient);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 12s ease-in-out infinite;
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
.hero .lead {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 680px;
  margin-top: 0.5rem;
}
.hero .subhead {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

/* hero entrance animation */
.hero h1, .hero .subhead, .hero .lead, .hero .pill {
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.7s var(--ease) forwards;
}
.hero .pill { animation-delay: 0.05s; }
.hero h1   { animation-delay: 0.15s; }
.hero .subhead { animation-delay: 0.25s; }
.hero .lead    { animation-delay: 0.35s; }
@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Pills ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.7rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(198,244,50,0.25);
  border-radius: 999px;
  margin-bottom: 1.5rem;
}
.pill .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(198,244,50,0.18), 0 0 10px var(--accent-glow);
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.6rem 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(198,244,50,0.4), transparent);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background: var(--bg-muted);
  box-shadow: var(--shadow-md);
}
.card:hover::before { opacity: 1; }
.card h3 {
  margin: 0.6rem 0 0.6rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}
.card p:last-child { margin-bottom: 0; }
.card ul, .card ol {
  margin: 0.4rem 0 0;
  padding-left: 1.15rem;
  color: var(--text-muted);
}
.card ul li, .card ol li { margin-bottom: 0.4rem; }
.card ul li::marker { color: var(--accent); }
.card ol li::marker { color: var(--accent); font-weight: 700; }

.card.highlight {
  background: linear-gradient(180deg, rgba(198,244,50,0.06), rgba(198,244,50,0.02));
  border-color: rgba(198,244,50,0.25);
}
.card.highlight:hover {
  border-color: rgba(198,244,50,0.45);
  box-shadow: 0 0 0 1px rgba(198,244,50,0.2), 0 20px 50px -20px rgba(198,244,50,0.2);
}

.card-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 760px) {
  .card-grid.two, .card-grid.three { grid-template-columns: 1fr; }
}

/* icon chip on cards */
.icon-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--accent);
  margin-bottom: 0.4rem;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.card:hover .icon-chip {
  transform: scale(1.06) rotate(-3deg);
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.icon-chip svg { width: 20px; height: 20px; }

/* numbered badge */
.num-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.7rem;
  box-shadow: 0 0 24px -4px var(--accent-glow);
}
.cost-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  margin-left: 0.4rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  vertical-align: 2px;
}
.cost-badge.free {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border-strong);
}

/* ---------- Checklist ---------- */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.55rem 0;
  color: var(--text-muted);
  border-bottom: 1px dashed var(--border);
}
.checklist li:last-child { border-bottom: 0; }
.checklist .box {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border-strong);
  border-radius: 3px;
  margin-top: 0.25rem;
  background: var(--bg-soft);
  transition: all 0.3s var(--ease);
}
.checklist li:hover .box {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ---------- Section headings ---------- */
.section-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 0 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
}
.kicker {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* ---------- Callout ---------- */
.callout {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.3rem;
  color: var(--text-muted);
  margin: 1.25rem 0;
}
.callout strong { color: var(--text); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding: 2.5rem 0;
  background: var(--bg-soft);
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.footer-meta {
  font-size: 0.82rem;
  color: var(--text-subtle);
  letter-spacing: 0.02em;
}
.pager {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.pager a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all 0.25s var(--ease);
}
.pager a:hover {
  text-decoration: none;
  border-color: var(--accent);
  color: var(--accent-ink);
  background: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 0 24px -4px var(--accent-glow);
}
.pager a svg { width: 16px; height: 16px; transition: transform 0.25s var(--ease); }
.pager a.prev:hover svg { transform: translateX(-3px); }
.pager a.next:hover svg { transform: translateX(3px); }

/* ---------- CTA inline ---------- */
.inline-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.inline-cta svg { transition: transform 0.25s var(--ease); }
.inline-cta:hover { text-decoration: none; }
.inline-cta:hover svg { transform: translateX(3px); }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in-view { opacity: 1; transform: none; }
.card-grid > .reveal:nth-child(1) { transition-delay: 0s; }
.card-grid > .reveal:nth-child(2) { transition-delay: 0.06s; }
.card-grid > .reveal:nth-child(3) { transition-delay: 0.12s; }
.card-grid > .reveal:nth-child(4) { transition-delay: 0.18s; }
.card-grid > .reveal:nth-child(5) { transition-delay: 0.24s; }
.card-grid > .reveal:nth-child(6) { transition-delay: 0.30s; }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero h1, .hero .subhead, .hero .lead, .hero .pill { opacity: 1; transform: none; }
}

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .nav-inner { height: auto; padding: 0.6rem 1.25rem; flex-wrap: wrap; }
  .nav-links { gap: 0; }
  .nav-links a { padding: 0.35rem 0.5rem; font-size: 0.8rem; }
  .hero { padding: 3.5rem 0 2.5rem; }
  section { padding: 3rem 0; }
}