:root {
  /* Primary palette */
  --blue-50: #EEF4FF;
  --blue-100: #D9E6FF;
  --blue-200: #B3CDFF;
  --blue-300: #80ABFF;
  --blue-400: #4F8CFF;
  --blue-500: #2B6FE6;
  --blue-600: #1A56C4;
  --blue-700: #13429E;

  /* Neutral palette */
  --gray-50: #F8F9FB;
  --gray-100: #F1F3F7;
  --gray-200: #E2E6ED;
  --gray-300: #C8CED9;
  --gray-400: #9AA2B1;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;

  /* Accents */
  --accent-green: #10B981;
  --accent-amber: #F59E0B;
  --accent-violet: #8B5CF6;
  --accent-rose: #F43F5E;

  /* Surfaces */
  --surface-primary: #FAFAFB;
  --surface-card: #FFFFFF;
  --surface-dark: #0B1120;
  --surface-dark-card: #131C2E;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.1);
  --shadow-xl: 0 16px 50px rgba(0,0,0,0.12);
  --shadow-blue: 0 4px 20px rgba(79,140,255,0.25);

  /* Typography */
  --font-main: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  /* Spacing */
  --space-section-desktop: 100px;
  --space-section-mobile: 50px;
  --container-width: 1140px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
}

/* ============ RESET & BASE ============ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-main);
  color: var(--gray-800);
  background: var(--surface-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ SCROLL ANIMATIONS ============ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============ BUTTONS ============ */
.btn-ghost {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.btn-ghost:hover {
  color: var(--gray-900);
  background: var(--gray-100);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--blue-400);
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
  background: var(--blue-500);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(79,140,255,0.3);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  background: var(--surface-card);
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* ============ HERO SECTION ============ */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79,140,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139,92,246,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue-600);
  margin-bottom: 28px;
}

.hero-badge .badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gray-900);
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero h1 .text-gradient {
  background: linear-gradient(135deg, var(--blue-400) 0%, var(--accent-violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: var(--gray-500);
  max-width: 540px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 13px;
  color: var(--gray-400);
  margin-top: 16px;
}

/* ============ HERO ANIMATION — Doc → AI → Calendar ============ */
.hero-visual {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  height: 320px;
  z-index: 1;
}

.flow-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  height: 100%;
  position: relative;
}

/* Flow cards */
.flow-card {
  background: var(--surface-card);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 2;
  width: 240px;
  flex-shrink: 0;
}

.flow-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 20px;
}

.flow-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.flow-card-desc {
  font-size: 13px;
  color: var(--gray-400);
  line-height: 1.5;
}

/* Source card (left) */
.flow-source .flow-card-icon { background: var(--blue-50); }
.flow-source { animation: floatCard 6s ease-in-out infinite; }

/* AI card (center) */
.flow-ai {
  background: var(--surface-dark);
  border-color: rgba(79,140,255,0.2);
  z-index: 3;
  width: 260px;
  text-align: center;
  box-shadow: var(--shadow-xl), 0 0 60px rgba(79,140,255,0.1);
}

.flow-ai .flow-card-icon {
  background: linear-gradient(135deg, var(--blue-400), var(--accent-violet));
  margin: 0 auto 16px;
}

.flow-ai .flow-card-title { color: #fff; }
.flow-ai .flow-card-desc { color: var(--gray-400); }
.flow-ai { animation: floatCard 6s ease-in-out 0.5s infinite; }

/* Output card (right) */
.flow-output .flow-card-icon { background: #ECFDF5; }
.flow-output { animation: floatCard 6s ease-in-out 1s infinite; }

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Connector arrows */
.flow-connector {
  width: 60px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.connector-line {
  width: 100%;
  height: 2px;
  background: var(--gray-200);
  position: relative;
  overflow: visible;
}

.connector-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--blue-400);
  border-radius: 50%;
  top: -3px;
  animation: moveDot 2.5s ease-in-out infinite;
}

@keyframes moveDot {
  0% { left: -4px; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: calc(100% - 4px); opacity: 0; }
}

.connector-arrow {
  position: absolute;
  right: -6px;
  top: -4px;
  width: 0;
  height: 0;
  border-left: 6px solid var(--gray-300);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

/* Document items inside source card */
.doc-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.doc-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--gray-50);
  border-radius: 6px;
  font-size: 12px;
  color: var(--gray-600);
  font-family: var(--font-mono);
  animation: fadeInDoc 0.6s ease backwards;
}

.doc-item:nth-child(1) { animation-delay: 0.5s; }
.doc-item:nth-child(2) { animation-delay: 0.8s; }
.doc-item:nth-child(3) { animation-delay: 1.1s; }

@keyframes fadeInDoc {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

.doc-icon-sm {
  font-size: 14px;
}

/* AI processing animation */
.ai-processing {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.ai-sparkle {
  display: flex;
  gap: 6px;
}

.ai-sparkle span {
  width: 6px;
  height: 6px;
  background: var(--blue-400);
  border-radius: 50%;
  animation: sparkle 1.4s ease-in-out infinite;
}

.ai-sparkle span:nth-child(2) { animation-delay: 0.2s; background: var(--accent-violet); }
.ai-sparkle span:nth-child(3) { animation-delay: 0.4s; }

@keyframes sparkle {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.5); opacity: 1; }
}

.ai-status {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent-green);
  letter-spacing: 0.5px;
}

/* Calendar mini in output card */
.mini-calendar {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
}

.cal-day {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 4px;
  background: var(--gray-50);
  position: relative;
}

.cal-day.has-post::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--blue-400);
  border-radius: 50%;
}

.cal-day.has-post.posted::after {
  background: var(--accent-green);
}

.cal-day.has-thread::after {
  width: 12px;
  height: 4px;
  border-radius: 2px;
  background: var(--accent-violet);
}

/* ============ TRUSTED BY / SOCIAL PROOF BAR ============ */
.trust-bar {
  padding: 60px 0;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}

.trust-bar-inner {
  text-align: center;
}

.trust-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 28px;
}

.trust-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}

.trust-stat {
  text-align: center;
}

.trust-stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -1px;
}

.trust-stat-label {
  font-size: 13px;
  color: var(--gray-400);
  margin-top: 4px;
}

/* ============ HOW IT WORKS ============ */
.section-hiw {
  padding: var(--space-section-desktop);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue-500);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 17px;
  color: var(--gray-500);
  line-height: 1.7;
  max-width: 560px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .section-desc {
  margin: 0 auto;
}

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

.hiw-card {
  background: var(--surface-card);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s ease;
  position: relative;
}

.hiw-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.hiw-step {
  font-size: 12px;
  font-weight: 700;
  color: var(--blue-400);
  font-family: var(--font-mono);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.hiw-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}

.hiw-card:nth-child(1) .hiw-icon { background: var(--blue-50); }
.hiw-card:nth-child(2) .hiw-icon { background: #F3E8FF; }
.hiw-card:nth-child(3) .hiw-icon { background: #ECFDF5; }

.hiw-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.hiw-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ============ FEATURES — Interactive Showcase ============ */
.section-features {
  padding: var(--space-section-desktop);
  background: var(--surface-dark);
  position: relative;
  overflow: hidden;
}

.section-features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(79,140,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.section-features .section-label { color: var(--blue-300); }
.section-features .section-title { color: #fff; }
.section-features .section-desc { color: var(--gray-400); }

.features-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.feature-tabs {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-tab {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.feature-tab::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--blue-400);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.feature-tab.active::before {
  transform: scaleY(1);
}

.feature-tab.active {
  background: var(--surface-dark-card);
  border-color: rgba(79,140,255,0.15);
}

.feature-tab:hover:not(.active) {
  background: rgba(255,255,255,0.03);
}

.feature-tab-icon {
  font-size: 20px;
  margin-bottom: 10px;
}

.feature-tab-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.feature-tab-desc {
  font-size: 13px;
  color: var(--gray-400);
  line-height: 1.5;
}

.feature-panel {
  background: var(--surface-dark-card);
  border: 1px solid rgba(79,140,255,0.1);
  border-radius: var(--radius-xl);
  padding: 40px;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-panel-content {
  display: none;
  animation: fadeInPanel 0.4s ease;
}

.feature-panel-content.active {
  display: block;
}

@keyframes fadeInPanel {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-title {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.panel-desc {
  font-size: 15px;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 480px;
}

.panel-features-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--gray-300);
}

.panel-feature-item .check-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: rgba(16,185,129,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--accent-green);
  margin-top: 1px;
}

/* ============ FEATURE GRID (below interactive) ============ */
.features-grid-section {
  padding: 0 0 100px;
  background: var(--surface-dark);
}

.features-small-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

.feature-small-card {
  background: var(--surface-dark-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all 0.3s ease;
}

.feature-small-card:hover {
  border-color: rgba(79,140,255,0.15);
  transform: translateY(-2px);
}

.feature-small-icon {
  font-size: 24px;
  margin-bottom: 16px;
}

.feature-small-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 6px;
}

.feature-small-card p {
  font-size: 13px;
  color: var(--gray-400);
  line-height: 1.5;
}

/* ============ SOCIAL PROOF / TESTIMONIALS ============ */
.section-testimonials {
  padding: var(--space-section-desktop);
}

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

.testimonial-card {
  background: var(--surface-card);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--gray-200);
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
  color: var(--accent-amber);
  font-size: 14px;
}

.testimonial-text {
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--blue-500);
}

.testimonial-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-900);
}

.testimonial-handle {
  font-size: 13px;
  color: var(--gray-400);
}

/* ============ SMART CONTENT ENGINE ============ */
.section-engine {
  padding: var(--space-section-desktop);
  background: var(--gray-50);
}

.engine-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.engine-card-main {
  background: var(--surface-card);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  transition: all 0.3s ease;
}

.engine-card-main:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--gray-200);
}

.engine-card-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--blue-50);
  color: var(--blue-600);
  margin-bottom: 20px;
}

.engine-card-badge.badge-green {
  background: #ECFDF5;
  color: #059669;
}

.engine-card-main h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.5px;
  margin-bottom: 10px;
  line-height: 1.3;
}

.engine-card-main > p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 28px;
}

/* Chunking visual */
.engine-visual-chunking {
  margin-bottom: 28px;
}

.chunk-demo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
}

.chunk-doc {
  flex: 1;
}

.chunk-doc-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-400);
  margin-bottom: 10px;
}

.chunk-line {
  height: 6px;
  border-radius: 3px;
  background: var(--gray-200);
  margin-bottom: 5px;
}

.chunk-line.full { width: 100%; }
.chunk-line.med { width: 70%; }
.chunk-line.short { width: 45%; }

.chunk-divider {
  height: 1px;
  background: var(--blue-100);
  margin: 8px 0;
  border-left: 3px solid var(--blue-300);
}

.chunk-arrows {
  flex-shrink: 0;
}

.chunk-posts {
  flex: 0.7;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chunk-post {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 10px;
  background: var(--surface-card);
  border-radius: 8px;
  border: 1px solid var(--gray-100);
}

.chunk-post-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
}

.chunk-post-lines {
  flex: 1;
}

.chunk-post-lines .chunk-line {
  height: 5px;
  margin-bottom: 4px;
}

/* Memory visual */
.engine-visual-memory {
  margin-bottom: 28px;
}

.memory-timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-100);
}

.memory-gen-label {
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--gray-400);
  margin-bottom: 6px;
}

.memory-bar {
  display: flex;
  height: 28px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--gray-100);
}

.memory-bar-used {
  background: var(--gray-300);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
  color: var(--gray-600);
  transition: width 1s ease;
  min-width: 40px;
}

.memory-bar-used.full-used {
  background: var(--accent-green);
  color: #fff;
}

.memory-bar-fresh {
  background: var(--blue-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
  color: var(--blue-600);
}

/* Engine detail list */
.engine-detail-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.engine-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.engine-detail-icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.engine-detail-item strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.engine-detail-item span {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.5;
}

/* ============ CTA SECTION ============ */
.section-cta {
  padding: var(--space-section-desktop);
}

.cta-card {
  background: var(--surface-dark);
  border-radius: var(--radius-xl);
  padding: 80px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(79,140,255,0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 50%, rgba(139,92,246,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.cta-card > * { position: relative; z-index: 1; }

.cta-card h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.cta-card p {
  font-size: 17px;
  color: var(--gray-400);
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-actions .btn-primary {
  padding: 14px 32px;
  font-size: 15px;
}

.cta-actions .btn-secondary {
  padding: 14px 32px;
  font-size: 15px;
  background: transparent;
  color: var(--gray-300);
  border-color: rgba(255,255,255,0.15);
}

.cta-actions .btn-secondary:hover {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.05);
}

/* ============ RESPONSIVE ============ */

/* Tablet/small desktop adjustments */
@media (max-width: 989px) {
  .hero {
    padding: 120px 0 50px;
  }
  /* === HERO FLOW: Vertical on mobile === */
  .hero-visual {
    height: auto;
    max-width: 340px;
    margin: 0 auto;
  }

  .flow-container {
    flex-direction: column;
    gap: 0;
    padding: 0;
  }

  .flow-card {
    width: 100%;
  }

  .flow-ai {
    width: 100%;
  }

  .flow-connector {
    width: 2px;
    height: 48px;
    flex-direction: column;
  }

  .connector-line {
    width: 2px;
    height: 100%;
  }

  .connector-dot {
    top: auto;
    left: -3px;
    animation: moveDotVertical 2.5s ease-in-out infinite;
  }

  .connector-arrow {
    right: auto;
    top: auto;
    bottom: -6px;
    left: -4px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--gray-300);
    border-bottom: none;
  }

  /* How it works */
  .hiw-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-hiw {
    padding: calc(var(--space-section-mobile)) 0;
  }

  /* Features interactive layout */
  .features-layout {
    grid-template-columns: 1fr;
  }

  .section-features {
    padding: calc(var(--space-section-mobile)) 0;
  }

  .feature-tabs {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .feature-tab {
    min-width: 180px;
    flex-shrink: 0;
  }

  .feature-panel {
    min-height: auto;
  }

  /* Feature small grid */
  .features-small-grid {
    grid-template-columns: 1fr;
  }

  /* Testimonials */
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .section-testimonials {
    padding: calc(var(--space-section-mobile)) 0;
  }

  /* Engine section */
  .engine-grid {
    grid-template-columns: 1fr;
  }

  .section-engine {
    padding: calc(var(--space-section-mobile)) 0;
  }

    /* CTA */
  .section-cta {
    padding: calc(var(--space-section-mobile)) 0;
  }

  /* Trust stats */
  .trust-stats {
    gap: 32px;
  }
}

@keyframes moveDotVertical {
  0% { top: -4px; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: calc(100% - 4px); opacity: 0; }
}

/* Smaller mobile adjustments */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 32px;
    letter-spacing: -1px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

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

  .trust-stats {
    flex-direction: column;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .chunk-demo {
    flex-direction: column;
    gap: 16px;
  }

  .chunk-arrows {
    transform: rotate(90deg);
  }

  .chunk-posts {
    flex: 1;
    width: 100%;
  }

  .section-title {
    font-size: 26px;
  }

  .feature-tab {
    min-width: 160px;
  }
}