*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --background: #0a0a0a;
  --foreground: #f5f5f5;
  --muted: #1a1a1a;
  --muted-foreground: #888888;
  --border: #222222;
  --brand: #3b82f6;
  --brand-hover: #2563eb;
  --section-alt: #0d0d0d;
  --card-bg: #111111;
  --card-border: #1e1e1e;
  --gradient-start: #3b82f6;
  --gradient-end: #8b5cf6;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-canvas {
  width: 32px;
  height: 32px;
  display: block;
}

.brand-canvas-small {
  width: 24px;
  height: 24px;
  display: block;
}

.brand-name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--muted-foreground);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--foreground);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--brand);
  color: white;
}

.btn-primary:hover {
  background: var(--brand-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--muted);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.btn-large {
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
}

/* Hero Section */
.hero {
  padding: 8rem 0 4rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -25%;
  width: 150%;
  height: 150%;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted-foreground);
  background: var(--muted);
  border: 1px solid var(--border);
  width: fit-content;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--muted-foreground);
  max-width: 480px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-canvas {
  width: 100%;
  max-width: 100%;
  height: 400px;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-alt {
  background: var(--section-alt);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--muted-foreground);
}

/* Feature Card */
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  overflow: hidden;
  position: relative;
}

.feature-card-glow::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
}

.feature-card-content {
  padding: 2rem;
}

.feature-input-area {
  background: var(--muted);
  border-radius: 0.75rem;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.input-badge {
  display: inline-flex;
  padding: 0.25rem 0.625rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--brand);
  color: white;
  margin-bottom: 0.75rem;
}

.input-email {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.email-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.email-details {
  flex: 1;
}

.email-from {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.125rem;
}

.email-subject {
  font-size: 0.8125rem;
  color: var(--foreground);
  margin-bottom: 0.125rem;
}

.email-preview {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
}

.feature-output-area {
  background: var(--muted);
  border-radius: 0.75rem;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.output-note {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.note-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--brand);
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.note-item {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  padding-left: 0.75rem;
  border-left: 2px solid var(--border);
}

.note-date {
  color: var(--foreground);
  font-weight: 500;
}

.feature-cycle {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  padding: 0.75rem;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.05), transparent);
  border-radius: 0.5rem;
  border: 1px solid rgba(59, 130, 246, 0.1);
}

/* Coworker Grid */
.coworker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.coworker-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s;
}

.coworker-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
}

.coworker-icon {
  width: 40px;
  height: 40px;
  border-radius: 0.5rem;
  background: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

.coworker-title {
  font-size: 1.125rem;
  font-weight: 700;
}

.coworker-desc {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

/* Meeting Brief */
.meeting-brief {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  overflow: hidden;
}

.brief-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.brief-actions {
  display: flex;
  gap: 1.5rem;
}

.brief-action {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  cursor: pointer;
  transition: color 0.2s;
  font-weight: 500;
}

.brief-action:hover {
  color: var(--brand);
}

.brief-settings {
  color: var(--muted-foreground);
  cursor: pointer;
  transition: color 0.2s;
}

.brief-settings:hover {
  color: var(--foreground);
}

.brief-demo {
  padding: 1.5rem;
}

.brief-query {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--muted);
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
}

.brief-query-icon {
  color: var(--brand);
  display: flex;
}

.brief-result {
  background: var(--muted);
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  padding: 1.25rem;
}

.brief-result-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  font-weight: 600;
}

.brief-time {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--muted-foreground);
  font-weight: 400;
}

.brief-section {
  margin-bottom: 1rem;
}

.brief-section:last-child {
  margin-bottom: 0;
}

.brief-section-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--brand);
  margin-bottom: 0.375rem;
}

.brief-section p {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

.brief-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.brief-list li {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  padding-left: 0.75rem;
  border-left: 2px solid var(--border);
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.value-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-align: center;
  align-items: center;
}

.value-icon {
  width: 48px;
  height: 48px;
  border-radius: 0.625rem;
  background: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

.value-title {
  font-size: 1.125rem;
  font-weight: 700;
}

.value-desc {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

/* CTA Section */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.cta-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.cta-desc {
  font-size: 1.125rem;
  color: var(--muted-foreground);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.9375rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-link {
  color: var(--muted-foreground);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--foreground);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.75rem;
  }
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .hero-visual {
    order: -1;
  }

  .hero-canvas {
    height: 300px;
  }

  .section-title {
    font-size: 2rem;
  }

  .coworker-grid {
    grid-template-columns: 1fr;
  }

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

  .nav-right .nav-link {
    display: none;
  }

  .brief-actions {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .values-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-large {
    width: 100%;
    text-align: center;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-content {
  animation: fadeIn 0.8s ease-out;
}

.hero-visual {
  animation: fadeIn 0.8s ease-out 0.2s both;
}