/* ═══ Google Fonts ═══ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ═══ Reset & Base ═══ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0
}

:root {
  --bg: #06080f;
  --bg2: #0c1120;
  --bg3: #131b30;
  --text: #f1f5f9;
  --text2: #94a3b8;
  --text3: #64748b;
  --primary: #6366f1;
  --primary-light: #818cf8;
  --secondary: #a855f7;
  --accent: #06b6d4;
  --gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #06b6d4 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(99, 102, 241, .12), rgba(168, 85, 247, .08), rgba(6, 182, 212, .06));
  --gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, .3), rgba(168, 85, 247, .2));
  --card: rgba(15, 23, 42, .6);
  --card-hover: rgba(20, 30, 55, .8);
  --border: rgba(99, 102, 241, .12);
  --border-hover: rgba(99, 102, 241, .3);
  --glass: rgba(15, 23, 42, .4);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 8px 32px rgba(0, 0, 0, .3);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, .15);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
}

html {
  scroll-behavior: smooth;
  font-size: 16px
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color .2s
}

a:hover {
  color: var(--accent)
}

img {
  max-width: 100%;
  display: block
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px
}

/* ═══ Gradient Text ═══ */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text
}

/* ═══ Buttons ═══ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .95rem;
  transition: all .3s cubic-bezier(.4, 0, .2, 1);
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font);
  letter-spacing: -.01em;
  position: relative;
  overflow: hidden
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, .1), transparent);
  opacity: 0;
  transition: opacity .3s
}

.btn:hover::after {
  opacity: 1
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, .35), 0 0 0 1px rgba(99, 102, 241, .2)
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, .5), 0 0 0 1px rgba(99, 102, 241, .3);
  color: #fff
}

.btn-outline {
  border: 1.5px solid var(--border);
  color: var(--text);
  background: var(--glass);
  backdrop-filter: blur(8px)
}

.btn-outline:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
  background: rgba(99, 102, 241, .06)
}

.btn-sm {
  padding: 8px 20px;
  font-size: .85rem
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.05rem;
  border-radius: var(--radius)
}

/* ═══ Announcement Bar ═══ */
/* (removed — products now in nav) */

/* ═══ Nav Product Links ═══ */
.nav-product-link {
  color: var(--primary-light) !important;
  font-weight: 600 !important;
  padding: 5px 14px;
  border-radius: 100px;
  border: 1px solid rgba(99, 102, 241, .25);
  background: rgba(99, 102, 241, .06);
  font-size: .82rem !important;
  transition: all .25s !important;
  white-space: nowrap
}

.nav-product-link:hover {
  background: rgba(99, 102, 241, .14) !important;
  border-color: var(--primary-light) !important;
  color: #fff !important
}

/* ═══ Nav ═══ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  background: transparent
}

.nav.scrolled {
  background: rgba(6, 8, 15, .85);
  backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid var(--border);
  padding: 10px 0
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -.02em
}

.logo-icon {
  font-size: 1.4rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none
}

.nav-links a {
  color: var(--text2);
  font-size: .88rem;
  font-weight: 500;
  transition: color .2s;
  letter-spacing: -.01em
}

.nav-links a:hover {
  color: var(--text)
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all .3s;
  border-radius: 2px
}

/* ═══ Hero ═══ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(99, 102, 241, .08) 0%, transparent 60%);
  pointer-events: none;
  animation: heroGlow 8s ease-in-out infinite alternate
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  right: -20%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(168, 85, 247, .06) 0%, transparent 60%);
  pointer-events: none;
  animation: heroGlow 10s ease-in-out infinite alternate-reverse
}

@keyframes heroGlow {
  0% {
    transform: translate(0, 0)
  }

  100% {
    transform: translate(30px, -20px)
  }
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, .03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%)
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 100px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--primary-light);
  border: 1px solid rgba(99, 102, 241, .2);
  background: rgba(99, 102, 241, .06);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
  letter-spacing: .02em
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  animation: badgePulse 2s ease-in-out infinite
}

@keyframes badgePulse {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(99, 102, 241, .4)
  }

  50% {
    opacity: .8;
    box-shadow: 0 0 0 6px rgba(99, 102, 241, 0)
  }
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: 24px;
  letter-spacing: -.03em
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text2);
  margin-bottom: 36px;
  max-width: 520px;
  line-height: 1.7;
  font-weight: 400
}

.hero-sub code,
.section-sub code {
  background: rgba(99, 102, 241, .1);
  border: 1px solid rgba(99, 102, 241, .2);
  padding: 2px 8px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: .9em;
  color: var(--primary-light)
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap
}

.hero-stats {
  display: flex;
  gap: 48px
}

.stat {
  display: flex;
  flex-direction: column;
  position: relative
}

.stat::after {
  content: '';
  position: absolute;
  right: -24px;
  top: 10%;
  height: 80%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border), transparent)
}

.stat:last-child::after {
  display: none
}

.stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -.02em
}

.stat-label {
  font-size: .75rem;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-top: 4px;
  font-weight: 500
}

/* Brain Viz */
.brain-viz {
  position: relative;
  width: 420px;
  height: 420px;
  margin: 0 auto
}

.brain-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 64px;
  height: 64px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 50px rgba(99, 102, 241, .4), 0 0 100px rgba(168, 85, 247, .2), inset 0 0 20px rgba(255, 255, 255, .1);
  animation: pulse 4s ease-in-out infinite
}

.brain-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid;
  transform: translate(-50%, -50%)
}

.ring-1 {
  width: 160px;
  height: 160px;
  border-color: rgba(99, 102, 241, .15);
  animation: spin 25s linear infinite
}

.ring-2 {
  width: 270px;
  height: 270px;
  border-color: rgba(168, 85, 247, .1);
  animation: spin 35s linear infinite reverse
}

.ring-3 {
  width: 380px;
  height: 380px;
  border-color: rgba(6, 182, 212, .08);
  animation: spin 45s linear infinite
}

.brain-node {
  position: absolute;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  font-weight: 700;
  color: #fff;
  z-index: 2;
  backdrop-filter: blur(4px)
}

.n1 {
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #22c55e, #059669);
  box-shadow: 0 0 20px rgba(34, 197, 94, .35)
}

.n2 {
  top: 50%;
  right: 3%;
  transform: translateY(-50%);
  background: linear-gradient(135deg, #f59e0b, #d97706);
  box-shadow: 0 0 20px rgba(245, 158, 11, .35)
}

.n3 {
  bottom: 8%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  box-shadow: 0 0 20px rgba(99, 102, 241, .35)
}

.n4 {
  top: 50%;
  left: 3%;
  transform: translateY(-50%);
  background: linear-gradient(135deg, #ef4444, #dc2626);
  box-shadow: 0 0 20px rgba(239, 68, 68, .35)
}

.brain-pulse {
  position: absolute;
  border-radius: 50%;
  background: rgba(99, 102, 241, .08);
  animation: ripple 5s ease-out infinite
}

.p1 {
  top: 50%;
  left: 50%;
  width: 100px;
  height: 100px;
  transform: translate(-50%, -50%);
  animation-delay: 0s
}

.p2 {
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  transform: translate(-50%, -50%);
  animation-delay: 1.6s
}

.p3 {
  top: 50%;
  left: 50%;
  width: 320px;
  height: 320px;
  transform: translate(-50%, -50%);
  animation-delay: 3.2s
}

.brain-connection {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1px;
  height: 150px;
  background: linear-gradient(to bottom, rgba(99, 102, 241, .2), transparent);
  transform-origin: top center;
  z-index: 1
}

.c1 {
  transform: rotate(0deg)
}

.c2 {
  transform: rotate(60deg)
}

.c3 {
  transform: rotate(120deg)
}

.c4 {
  transform: rotate(180deg)
}

.c5 {
  transform: rotate(240deg)
}

.c6 {
  transform: rotate(300deg)
}

@keyframes pulse {

  0%,
  100% {
    box-shadow: 0 0 50px rgba(99, 102, 241, .4), 0 0 100px rgba(168, 85, 247, .2)
  }

  50% {
    box-shadow: 0 0 70px rgba(99, 102, 241, .6), 0 0 140px rgba(168, 85, 247, .3)
  }
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg)
  }
}

@keyframes ripple {
  0% {
    opacity: .5;
    transform: translate(-50%, -50%) scale(.5)
  }

  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.5)
  }
}

/* ═══ Sections ═══ */
.section {
  padding: 120px 0;
  position: relative
}

.section-header {
  text-align: center;
  margin-bottom: 72px
}

.section-title {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -.03em;
  line-height: 1.15
}

.section-sub {
  font-size: 1.1rem;
  color: var(--text2);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
  line-height: 1.7
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--secondary);
  border: 1px solid rgba(168, 85, 247, .2);
  background: rgba(168, 85, 247, .06);
  margin-bottom: 18px;
  letter-spacing: .02em
}

/* ═══ Problem ═══ */
.problem {
  background: var(--bg2)
}

.problem::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent)
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

.problem-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  text-align: center;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden
}

.problem-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-subtle);
  opacity: 0;
  transition: opacity .4s
}

.problem-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow)
}

.problem-card:hover::before {
  opacity: 1
}

.problem-icon {
  font-size: 2.8rem;
  margin-bottom: 18px;
  position: relative;
  z-index: 1
}

.problem-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  font-weight: 700;
  position: relative;
  z-index: 1;
  letter-spacing: -.01em
}

.problem-card p {
  color: var(--text2);
  font-size: .9rem;
  position: relative;
  z-index: 1;
  line-height: 1.6
}

/* ═══ Architecture ═══ */
.arch-diagram {
  max-width: 720px;
  margin: 0 auto
}

.arch-layer {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden
}

.arch-layer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-subtle);
  opacity: 0;
  transition: opacity .4s
}

.arch-layer:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow)
}

.arch-layer:hover::before {
  opacity: 1
}

.arch-layer-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  position: relative;
  z-index: 1
}

.arch-badge {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: .78rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em
}

.layer-l1 .arch-badge {
  background: linear-gradient(135deg, #22c55e, #059669)
}

.layer-l2 .arch-badge {
  background: linear-gradient(135deg, #f59e0b, #d97706)
}

.layer-l3 .arch-badge {
  background: var(--gradient)
}

.layer-l4 .arch-badge {
  background: linear-gradient(135deg, #ef4444, #dc2626)
}

.arch-layer h3 {
  font-size: 1.1rem;
  flex: 1;
  position: relative;
  z-index: 1;
  font-weight: 700;
  letter-spacing: -.01em
}

.arch-speed {
  font-size: .78rem;
  color: var(--primary-light);
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 100px;
  background: rgba(99, 102, 241, .08);
  border: 1px solid rgba(99, 102, 241, .15)
}

.arch-layer p {
  color: var(--text2);
  font-size: .9rem;
  margin-bottom: 8px;
  position: relative;
  z-index: 1
}

.arch-tech {
  font-size: .78rem;
  color: var(--text3);
  font-family: var(--mono);
  position: relative;
  z-index: 1
}

.arch-arrow {
  text-align: center;
  font-size: 1.5rem;
  color: var(--text3);
  padding: 8px 0;
  opacity: .4
}

/* ═══ Features ═══ */
.features {
  background: var(--bg2)
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent)
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s cubic-bezier(.4, 0, .2, 1)
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover)
}

.feature-card:hover::before {
  transform: scaleX(1)
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px
}

.feature-card h3 {
  font-size: .95rem;
  margin-bottom: 10px;
  font-weight: 700;
  letter-spacing: -.01em
}

.feature-card p {
  color: var(--text2);
  font-size: .84rem;
  line-height: 1.6
}

/* ═══ Collective ═══ */
.collective-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center
}

.collective-list {
  list-style: none;
  margin-top: 28px
}

.collective-list li {
  padding: 12px 0 12px 32px;
  position: relative;
  color: var(--text2);
  font-size: .95rem;
  line-height: 1.6
}

.collective-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-light);
  font-weight: 700;
  font-size: 1rem
}

/* Flywheel */
.flywheel {
  position: relative;
  width: 360px;
  height: 360px;
  margin: 0 auto
}

.flywheel-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: .75rem;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 0 40px rgba(99, 102, 241, .3), 0 0 80px rgba(168, 85, 247, .15);
  line-height: 1.3
}

.flywheel-item {
  position: absolute;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background: var(--card);
  border: 1px solid var(--border);
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
  backdrop-filter: blur(8px)
}

.fi-1 {
  top: 0;
  left: 50%;
  transform: translateX(-50%)
}

.fi-2 {
  top: 50%;
  right: 0;
  transform: translateY(-50%)
}

.fi-3 {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%)
}

.fi-4 {
  top: 50%;
  left: 0;
  transform: translateY(-50%)
}

.flywheel-arrow {
  position: absolute;
  font-size: 1.2rem;
  color: var(--primary-light);
  font-weight: 700
}

.fa-1 {
  top: 18%;
  right: 22%;
  transform: rotate(45deg)
}

.fa-2 {
  bottom: 22%;
  right: 18%;
  transform: rotate(135deg)
}

.fa-3 {
  bottom: 18%;
  left: 22%;
  transform: rotate(225deg)
}

.fa-4 {
  top: 22%;
  left: 18%;
  transform: rotate(315deg)
}

/* ═══ Pricing ═══ */
.pricing {
  background: var(--bg2)
}

.pricing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent)
}

.pricing-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px
}

.toggle-label {
  font-size: .9rem;
  color: var(--text3);
  cursor: pointer;
  font-weight: 500;
  transition: color .2s
}

.toggle-label.active {
  color: var(--text)
}

.toggle-switch {
  width: 48px;
  height: 26px;
  border-radius: 100px;
  background: var(--bg3);
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: background .2s
}

.toggle-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gradient);
  transition: transform .3s
}

.toggle-switch.active .toggle-knob {
  transform: translateX(22px)
}

.save-badge {
  font-size: .7rem;
  padding: 2px 8px;
  border-radius: 100px;
  background: rgba(34, 197, 94, .1);
  color: #22c55e;
  font-weight: 600;
  margin-left: 4px
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px
}

.pricing-legend {
  margin-bottom: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: var(--text2)
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0
}

.dot-l2 {
  background: linear-gradient(135deg, #f59e0b, #d97706)
}

.dot-l3 {
  background: var(--gradient)
}

.dot-l4 {
  background: linear-gradient(135deg, #ef4444, #dc2626)
}

.price-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(8px)
}

.price-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover)
}

.price-card.popular {
  border-color: rgba(99, 102, 241, .4);
  box-shadow: 0 0 40px rgba(99, 102, 241, .12), inset 0 1px 0 rgba(99, 102, 241, .2)
}

.popular-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 18px;
  border-radius: 100px;
  font-size: .7rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient);
  letter-spacing: .02em
}

.price-header h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -.01em
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -.03em
}

.price-currency {
  font-size: 1.2rem;
  font-weight: 600;
  vertical-align: top;
  margin-right: 2px
}

.price-period {
  font-size: .85rem;
  font-weight: 400;
  color: var(--text2)
}

.price-custom {
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent
}

.price-desc {
  font-size: .85rem;
  color: var(--text2);
  margin-bottom: 28px
}

.price-features {
  list-style: none;
  margin-bottom: 32px
}

.price-features li {
  padding: 8px 0;
  font-size: .84rem;
  color: var(--text2);
  border-bottom: 1px solid rgba(99, 102, 241, .06);
  display: flex;
  align-items: center;
  gap: 10px
}

.price-features li:last-child {
  border: none
}

.price-features li.disabled {
  opacity: .4
}

.price-features .check {
  color: #22c55e;
  font-weight: 700
}

.price-features .cross {
  color: var(--text3)
}

.price-features .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0
}

.price-features .price-highlight {
  font-weight: 700;
  color: var(--primary-light)
}

.price-card .btn {
  width: 100%;
  justify-content: center
}

/* ═══ Integrations ═══ */
.integration-methods {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
  margin-bottom: 32px;
  background: var(--bg3);
  border-radius: var(--radius-sm);
  padding: 4px;
  max-width: fit-content;
  margin-left: auto;
  margin-right: auto
}

.int-method {
  padding: 10px 22px;
  border-radius: calc(var(--radius-sm) - 2px);
  cursor: pointer;
  font-size: .88rem;
  font-weight: 500;
  color: var(--text3);
  transition: all .2s;
  border: none;
  background: transparent
}

.int-method:hover {
  color: var(--text2)
}

.int-method.active {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 2px 12px rgba(99, 102, 241, .3)
}

.guide-tab {
  padding: 10px 22px;
  border-radius: calc(var(--radius-sm) - 2px);
  cursor: pointer;
  font-size: .88rem;
  font-weight: 500;
  color: var(--text3);
  transition: all .2s;
  border: none;
  outline: none;
  background: transparent;
  font-family: var(--font);
  -webkit-appearance: none;
  appearance: none
}

.guide-tab:hover {
  color: var(--text2)
}

.guide-tab.active {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 2px 12px rgba(99, 102, 241, .3)
}

.guide-panel {
  display: none
}

.guide-panel.active {
  display: block
}

.code-panels {
  max-width: 700px;
  margin: 0 auto
}

.code-panel {
  display: none
}

.code-panel.active {
  display: block
}

.code-block {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(99, 102, 241, .03)
}

.code-lang {
  font-size: .78rem;
  font-weight: 600;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: .06em
}

.code-file {
  font-size: .78rem;
  color: var(--text3);
  font-family: var(--mono)
}

pre {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 20px;
  overflow-x: auto;
  font-size: .82rem;
  line-height: 1.7;
  margin: 0
}

code {
  font-family: var(--mono);
  color: var(--text)
}

.kw {
  color: #c084fc
}

.fn {
  color: #60a5fa
}

.str {
  color: #34d399
}

.cm {
  color: #4b5563
}

.op {
  color: #f59e0b
}

.num {
  color: #fb923c
}

.var {
  color: var(--text)
}

/* ═══ Use Cases ═══ */
.usecases {
  background: var(--bg2)
}

.usecases::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent)
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px
}

.usecase-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden
}

.usecase-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform .4s
}

.usecase-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover)
}

.usecase-card:hover::before {
  transform: scaleX(1)
}

.usecase-icon {
  font-size: 2.5rem;
  margin-bottom: 16px
}

.usecase-card h3 {
  font-size: .95rem;
  margin-bottom: 10px;
  font-weight: 700
}

.usecase-card p {
  color: var(--text2);
  font-size: .84rem;
  line-height: 1.6
}

/* ═══ Compare ═══ */
.compare-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border)
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card)
}

.compare-table th,
.compare-table td {
  padding: 16px 22px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: .84rem
}

.compare-table th {
  background: var(--bg3);
  font-weight: 700;
  color: var(--text);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .06em
}

.compare-table td {
  color: var(--text2)
}

.compare-table tr:last-child td {
  border: none
}

.compare-table .highlight {
  background: rgba(99, 102, 241, .04);
  color: var(--primary-light);
  font-weight: 600
}

.compare-table .yes {
  color: #22c55e;
  font-weight: 600
}

.compare-table .no {
  color: var(--text3)
}

.compare-table .partial {
  color: #f59e0b;
  font-weight: 500
}

.compare-table .price-highlight {
  color: var(--primary-light);
  font-weight: 700
}

/* ═══ Get Started / CTA ═══ */
.cta-section {
  text-align: center;
  padding: 120px 0;
  position: relative
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(99, 102, 241, .06) 0%, transparent 60%);
  pointer-events: none
}

/* ═══ Quickstart Section ═══ */
.quickstart {
  max-width: 760px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow), 0 0 80px rgba(99, 102, 241, .06)
}

.qs-step {
  display: flex;
  flex-direction: column;
  gap: 14px
}

.qs-step-header {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap
}

.qs-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .85rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(99, 102, 241, .25)
}

.qs-label {
  color: var(--text);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -.01em
}

.qs-key-row {
  display: flex;
  gap: 10px
}

.qs-input {
  flex: 1;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: .9rem;
  outline: none;
  font-family: var(--font);
  transition: border-color .2s
}

.qs-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, .12)
}

.qs-input::placeholder {
  color: var(--text3)
}

.qs-key-result {
  margin-top: 10px
}

.qs-key-display {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px
}

.qs-key-display code {
  flex: 1;
  color: var(--primary-light);
  font-family: var(--mono);
  font-size: .85rem;
  word-break: break-all
}

/* Platform tabs */
.qs-platform-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px
}

.qs-tab {
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: .84rem;
  font-weight: 500;
  transition: all .25s;
  font-family: var(--font)
}

.qs-tab:hover {
  border-color: var(--border-hover);
  color: var(--text)
}

.qs-tab.active {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 12px rgba(99, 102, 241, .25)
}

/* Mode toggle */
.qs-mode-toggle {
  display: flex;
  gap: 2px;
  margin-left: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px
}

.qs-mode {
  padding: 6px 16px;
  border: none;
  background: transparent;
  color: var(--text3);
  cursor: pointer;
  font-size: .8rem;
  font-weight: 500;
  border-radius: calc(var(--radius-sm) - 3px);
  transition: all .2s;
  font-family: var(--font)
}

.qs-mode:hover {
  color: var(--text2)
}

.qs-mode.active {
  background: var(--gradient);
  color: #fff
}

/* Install panels */
.qs-install-box {
  min-height: 120px
}

.qs-panel {
  display: none
}

.qs-panel.active {
  display: block
}

.qs-code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  overflow-x: auto
}

.qs-code pre {
  font-family: var(--mono);
  font-size: .84rem;
  color: var(--text);
  white-space: pre-wrap;
  margin: 0;
  line-height: 1.7
}

.qs-code-comment {
  color: var(--text3);
  font-family: var(--mono);
  font-size: .78rem;
  display: block;
  margin-bottom: 8px
}

.qs-key-placeholder {
  color: var(--accent);
  font-weight: 600
}

.qs-hint {
  color: var(--text2);
  font-size: .84rem;
  margin-top: 12px;
  line-height: 1.6
}

.qs-hint code {
  background: var(--bg);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: .8rem;
  border: 1px solid var(--border)
}

.qs-hint a {
  color: var(--primary-light);
  text-decoration: none
}

.qs-hint a:hover {
  text-decoration: underline
}

.warning-text {
  color: #f59e0b;
  font-size: .8rem;
  margin-top: 8px
}

.btn-copy {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px;
  border-radius: 6px;
  transition: background .2s
}

.btn-copy:hover {
  background: var(--bg3)
}

/* ═══ Footer ═══ */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
  position: relative
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent)
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px
}

.footer-brand p {
  color: var(--text2);
  font-size: .9rem;
  margin-top: 14px;
  line-height: 1.7
}

.footer-built {
  margin-top: 8px;
  font-size: .8rem;
  color: var(--text3)
}

.footer-col h4 {
  font-size: .82rem;
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text)
}

.footer-col a {
  display: block;
  color: var(--text2);
  font-size: .85rem;
  padding: 5px 0;
  transition: color .2s
}

.footer-col a:hover {
  color: var(--primary-light)
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  text-align: center
}

.footer-bottom p {
  font-size: .8rem;
  color: var(--text3)
}

/* ═══ Reveal Animation ═══ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1), transform .7s cubic-bezier(.4, 0, .2, 1)
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0)
}

/* Stagger children */
.reveal:nth-child(2) {
  transition-delay: .1s
}

.reveal:nth-child(3) {
  transition-delay: .2s
}

.reveal:nth-child(4) {
  transition-delay: .3s
}

/* ═══ Responsive ═══ */
@media(max-width:1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center
  }

  .hero-sub {
    margin: 0 auto 32px
  }

  .hero-cta {
    justify-content: center
  }

  .hero-stats {
    justify-content: center
  }

  .hero-visual {
    display: none
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .usecase-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .collective-inner {
    grid-template-columns: 1fr
  }

  .flywheel {
    margin-top: 40px
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr
  }

  .section-title {
    font-size: 2.2rem
  }

  .hero-title {
    font-size: 3rem
  }
}

@media(max-width:768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(6, 8, 15, .96);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border)
  }

  .nav-links.open {
    display: flex
  }

  .nav-toggle {
    display: flex
  }

  .hero-title {
    font-size: 2.4rem
  }

  .section-title {
    font-size: 1.8rem
  }

  .section {
    padding: 80px 0
  }

  .problem-grid {
    grid-template-columns: 1fr
  }

  .features-grid {
    grid-template-columns: 1fr
  }

  .pricing-grid {
    grid-template-columns: 1fr
  }

  .usecase-grid {
    grid-template-columns: 1fr
  }

  .footer-grid {
    grid-template-columns: 1fr
  }

  .compare-table {
    font-size: .75rem
  }

  .compare-table th,
  .compare-table td {
    padding: 10px 14px
  }

  .price-amount {
    font-size: 2.2rem
  }

  .pricing-toggle {
    flex-wrap: wrap
  }
}

@media(max-width:640px) {
  .quickstart {
    padding: 24px;
    border-radius: var(--radius)
  }

  .qs-key-row {
    flex-direction: column
  }

  .qs-mode-toggle {
    margin-left: 0;
    margin-top: 8px
  }

  .hero-cta {
    flex-direction: column;
    align-items: center
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
    align-items: center
  }

  .stat::after {
    display: none
  }
}

/* ═══ Scrollbar ═══ */
::-webkit-scrollbar {
  width: 8px
}

::-webkit-scrollbar-track {
  background: var(--bg)
}

::-webkit-scrollbar-thumb {
  background: var(--bg3);
  border-radius: 4px
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, .3)
}

/* ═══ Selection ═══ */
::selection {
  background: rgba(99, 102, 241, .3);
  color: var(--text)
}

/* ═══ ToS Modal ═══ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all
}

.modal-tos {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 680px;
  width: 90%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden
}

.modal-header {
  padding: 24px 28px 16px;
  border-bottom: 1px solid var(--border)
}

.modal-header h2 {
  color: var(--text);
  font-size: 1.3rem;
  margin: 0
}

.modal-header .modal-sub {
  color: var(--text2);
  font-size: .9rem;
  margin-top: 4px
}

.tos-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 20px 28px;
  max-height: 50vh;
  scroll-behavior: smooth
}

.tos-content {
  color: var(--text2);
  font-size: .85rem;
  line-height: 1.7
}

.tos-content h3 {
  color: var(--text);
  font-size: 1.1rem;
  margin: 0 0 16px
}

.tos-content h4 {
  color: var(--text);
  font-size: .95rem;
  margin: 24px 0 8px
}

.tos-content p {
  margin: 6px 0
}

.tos-content em {
  color: var(--text3)
}

.tos-footer {
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px
}

.tos-scroll-hint {
  color: var(--accent);
  font-size: .85rem;
  text-align: center;
  animation: pulse 2s infinite
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1
  }

  50% {
    opacity: .5
  }
}

#tosAcceptBtn:disabled {
  opacity: .4;
  cursor: not-allowed
}

@media(max-width:640px) {
  .modal-tos {
    width: 95%;
    max-height: 90vh
  }

  .tos-scroll {
    max-height: 55vh;
    padding: 16px
  }
}

/* ═══ Language Toggle ═══ */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text2);
  cursor: pointer;
  font-size: .8rem;
  font-weight: 600;
  font-family: var(--font);
  transition: all .2s;
  backdrop-filter: blur(8px)
}

.lang-toggle:hover {
  border-color: var(--border-hover);
  color: var(--text)
}

.lang-flag {
  font-size: 1rem
}

.lang-code {
  letter-spacing: .04em
}

/* ═══ Hero Code Snippet ═══ */
.hero-code-snippet {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow), 0 0 60px rgba(99, 102, 241, .08);
  max-width: 520px;
  margin: 0 auto
}

.hero-code-snippet pre {
  padding: 20px;
  font-size: .82rem;
  line-height: 1.7
}

/* ═══ Pipeline ═══ */
.pipeline {
  display: flex;
  align-items: flex-start;
  gap: 0;
  max-width: 100%;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center
}

.pipeline-step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  flex: 1;
  min-width: 140px;
  max-width: 190px;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden
}

.pipeline-step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s
}

.pipeline-step:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover)
}

.pipeline-step:hover::before {
  transform: scaleX(1)
}

.pipeline-icon {
  font-size: 2rem;
  margin-bottom: 12px
}

.pipeline-content h3 {
  font-size: .9rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -.01em
}

.pipeline-content p {
  color: var(--text2);
  font-size: .78rem;
  line-height: 1.5
}

.pipeline-arrow {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  color: var(--text3);
  padding: 0 8px;
  opacity: .4;
  margin-top: 40px
}

/* ═══ Moat ═══ */
.moat {
  background: var(--bg2)
}

.moat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent)
}

.moat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px
}

.moat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden
}

.moat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s
}

.moat-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow)
}

.moat-card:hover::before {
  transform: scaleX(1)
}

.moat-icon {
  font-size: 2.2rem;
  margin-bottom: 16px
}

.moat-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -.01em
}

.moat-card p {
  color: var(--text2);
  font-size: .84rem;
  line-height: 1.6
}

/* ═══ Compare Note ═══ */
.compare-note {
  text-align: center;
  color: var(--text3);
  font-size: .8rem;
  margin-top: 16px
}

/* ═══ Feature Tiers ═══ */
.feature-tier {
  margin-bottom: 48px
}

.feature-tier:last-child {
  margin-bottom: 0
}

.tier-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px
}

.tier-badge {
  padding: 6px 16px;
  border-radius: 100px;
  font-size: .75rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em
}

.tier-core {
  background: linear-gradient(135deg, #22c55e, #059669)
}

.tier-advanced {
  background: var(--gradient)
}

.tier-infra {
  background: linear-gradient(135deg, #f59e0b, #d97706)
}

.tier-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.01em
}

.features-grid-5 {
  grid-template-columns: repeat(3, 1fr)
}

.features-grid-4 {
  grid-template-columns: repeat(4, 1fr)
}

/* ═══ Product Cards (Hub) ═══ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all .4s cubic-bezier(.4, 0, .2, 1);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  display: block
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  color: var(--text)
}

.product-card:hover::before {
  transform: scaleX(1)
}

.product-card-icon {
  font-size: 2.4rem;
  margin-bottom: 16px
}

.product-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -.01em
}

.product-card p {
  color: var(--text2);
  font-size: .88rem;
  line-height: 1.6;
  margin-bottom: 16px
}

.product-card-price {
  font-size: .85rem;
  color: var(--primary-light);
  font-weight: 600
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: .7rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #ef4444, #f97316);
  letter-spacing: .02em
}

/* ═══ SaaS Simple Nav ═══ */
.nav-simple .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between
}

.nav-back {
  color: var(--text2);
  font-size: .85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color .2s
}

.nav-back:hover {
  color: var(--text)
}

/* ═══ SaaS Hero ═══ */
.saas-hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden
}

.saas-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(99, 102, 241, .08) 0%, transparent 60%);
  pointer-events: none
}

.saas-hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center
}

.saas-hero-content {
  max-width: 560px
}

.saas-hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 20px;
  letter-spacing: -.03em
}

.saas-hero-sub {
  font-size: 1.15rem;
  color: var(--text2);
  margin-bottom: 32px;
  line-height: 1.7
}

/* ═══ Zalo Chat Mockup ═══ */
.chat-mockup {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 380px;
  margin: 0 auto;
  box-shadow: var(--shadow)
}

.chat-header {
  background: linear-gradient(135deg, #0068ff, #0099ff);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff
}

.chat-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem
}

.chat-name {
  font-weight: 700;
  font-size: .9rem
}

.chat-status {
  font-size: .72rem;
  opacity: .8
}

.chat-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 260px
}

.chat-msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: .82rem;
  line-height: 1.5
}

.chat-msg.user {
  align-self: flex-end;
  background: #0068ff;
  color: #fff;
  border-bottom-right-radius: 4px
}

.chat-msg.bot {
  align-self: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-left-radius: 4px
}

.chat-msg .highlight {
  color: var(--primary-light);
  font-weight: 600
}

/* ═══ Pain Points ═══ */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

/* ═══ Steps (How It Works SaaS) ═══ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  counter-reset: step
}

.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  position: relative;
  transition: all .4s cubic-bezier(.4, 0, .2, 1)
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover)
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  margin: 0 auto 20px;
  box-shadow: 0 4px 16px rgba(99, 102, 241, .3)
}

.step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px
}

.step-card p {
  color: var(--text2);
  font-size: .88rem;
  line-height: 1.6
}

/* ═══ Testimonials ═══ */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

.testimonial-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
  backdrop-filter: blur(8px)
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  left: 24px;
  font-size: 3rem;
  color: var(--primary);
  opacity: .2;
  font-family: Georgia, serif;
  line-height: 1
}

.testimonial-text {
  color: var(--text2);
  font-size: .9rem;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
  font-weight: 700
}

.testimonial-info h4 {
  font-size: .85rem;
  font-weight: 700;
  color: var(--text)
}

.testimonial-info p {
  font-size: .78rem;
  color: var(--text3)
}

/* ═══ FAQ Accordion ═══ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text);
  font-size: .95rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font);
  transition: color .2s
}

.faq-question:hover {
  color: var(--primary-light)
}

.faq-icon {
  font-size: 1.2rem;
  transition: transform .3s;
  color: var(--text3)
}

.faq-item.open .faq-icon {
  transform: rotate(45deg)
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  padding: 0 24px
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px
}

.faq-answer p {
  color: var(--text2);
  font-size: .88rem;
  line-height: 1.7
}

/* ═══ SaaS Pricing ═══ */
.saas-pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

.trial-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: .75rem;
  font-weight: 700;
  color: #22c55e;
  background: rgba(34, 197, 94, .1);
  border: 1px solid rgba(34, 197, 94, .2);
  margin-bottom: 16px
}

/* ═══ SaaS Footer (simple) ═══ */
.footer-simple {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 40px 0
}

.footer-simple-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px
}

.footer-simple-links {
  display: flex;
  gap: 24px
}

.footer-simple-links a {
  color: var(--text2);
  font-size: .85rem
}

.powered-by {
  font-size: .8rem;
  color: var(--text3)
}

.powered-by a {
  color: var(--primary-light)
}

/* ═══ SaaS Use Cases Grid ═══ */
.saas-usecase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px
}

/* ═══ SaaS Features Grid (6 cards) ═══ */
.saas-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px
}

/* ═══ Pricing Note ═══ */
.pricing-note {
  text-align: center;
  margin-top: 32px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text2);
  font-size: .9rem
}

.pricing-note a {
  color: var(--primary-light);
  font-weight: 600
}

/* ═══ Responsive — SaaS Pages ═══ */
@media(max-width:1024px) {
  .products-grid { grid-template-columns: 1fr }
  .saas-hero-inner { grid-template-columns: 1fr; text-align: center }
  .saas-hero-title { font-size: 2.6rem }
  .saas-hero-content { max-width: 100% }
  .chat-mockup { margin: 40px auto 0 }
  .pain-grid { grid-template-columns: 1fr }
  .steps-grid { grid-template-columns: 1fr }
  .testimonials-grid { grid-template-columns: 1fr }
  .saas-pricing-grid { grid-template-columns: 1fr }
  .saas-usecase-grid { grid-template-columns: repeat(2, 1fr) }
  .saas-features-grid { grid-template-columns: repeat(2, 1fr) }
}

@media(max-width:768px) {
  .saas-hero-title { font-size: 2rem }
  .saas-usecase-grid { grid-template-columns: 1fr }
  .saas-features-grid { grid-template-columns: 1fr }
  .footer-simple-inner { flex-direction: column; text-align: center }
}

/* ═══ Architecture ═══ */
.architecture {
  background: var(--bg2)
}

.architecture::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent)
}

.arch-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px
}

.arch-stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: all .4s cubic-bezier(.4, 0, .2, 1)
}

.arch-stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover)
}

.arch-stat-num {
  display: block;
  font-size: 2.4rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -.03em;
  margin-bottom: 6px
}

.arch-stat-label {
  font-size: .8rem;
  color: var(--text2);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .06em
}

.arch-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center
}

.stack-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: var(--card);
  border: 1px solid var(--border);
  font-size: .85rem;
  font-weight: 500;
  color: var(--text2);
  backdrop-filter: blur(8px);
  transition: all .2s
}

.stack-item:hover {
  border-color: var(--border-hover);
  color: var(--text)
}

.stack-icon {
  font-size: 1.1rem
}

/* ═══ Responsive — New Sections ═══ */
@media(max-width:1024px) {
  .pipeline {
    flex-direction: column;
    align-items: center
  }

  .pipeline-step {
    max-width: 400px;
    width: 100%
  }

  .pipeline-arrow {
    transform: rotate(90deg);
    margin-top: 0;
    padding: 4px 0
  }

  .moat-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .features-grid-5 {
    grid-template-columns: repeat(2, 1fr)
  }

  .features-grid-4 {
    grid-template-columns: repeat(2, 1fr)
  }

  .arch-stats-grid {
    grid-template-columns: repeat(2, 1fr)
  }
}

@media(max-width:768px) {
  .moat-grid {
    grid-template-columns: 1fr
  }

  .features-grid-5 {
    grid-template-columns: 1fr
  }

  .features-grid-4 {
    grid-template-columns: 1fr
  }

  .arch-stats-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .arch-stack {
    gap: 8px
  }

  .stack-item {
    font-size: .78rem;
    padding: 8px 14px
  }

  .hero-code-snippet {
    display: none
  }
}