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

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

:root {
  --bg: #09090b;
  --bg-card: #111113;
  --bg-card-hover: #18181b;
  --border: #1f1f24;
  --border-hover: #3a3a42;
  --text: #ededf0;
  --text-dim: #8a8a96;
  --text-muted: #55555e;
  --font-sans: 'Inter', -apple-system, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace;
  --max-w: 920px;
  --radius: 12px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 20%, #71717a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(9, 9, 11, 0.8);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon-img {
  width: 34px;
  height: 34px;
  border-radius: 7px;
}

.logo-text {
  background: linear-gradient(135deg, #ffffff 30%, #8a8a96 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  background: #ffffff;
  color: #09090b;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 8px;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
}

.cta-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 30px rgba(255, 255, 255, 0.15);
}

.cta--sm {
  padding: 8px 20px;
  font-size: 0.88rem;
}

.cta--outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.cta--outline:hover {
  border-color: var(--border-hover);
  background: var(--bg-card);
  box-shadow: none;
}

.cta--lg {
  padding: 18px 36px;
  font-size: 1.05rem;
}

.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 180px 24px 80px;
  text-align: center;
  position: relative;
}

.hero-glow {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2.8rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  position: relative;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--text-dim);
  max-width: 520px;
  margin: 28px auto 0;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

.hero-scroll-arrow {
  display: block;
  margin: 48px auto 0;
  color: var(--text-muted);
  opacity: 0.5;
  transition: opacity 0.3s ease, color 0.3s ease;
  animation: float-down 2s ease-in-out infinite;
}

.hero-scroll-arrow:hover {
  opacity: 1;
  color: var(--text-dim);
}

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

.platforms-note {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 18px;
  text-align: center;
}

.platform-badges {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 20px;
  flex-wrap: wrap;
}

.platform-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 6px;
  transition: all 0.25s ease;
}

.platform-badge:hover {
  border-color: var(--border-hover);
  color: var(--text-dim);
}

.platform-badge svg {
  opacity: 0.6;
}

.platform-badge em {
  font-style: normal;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255,255,255,0.06);
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: 2px;
}

.video-section {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 100px;
  position: relative;
}

.video-wrapper {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow:
    0 0 0 1px var(--border),
    0 20px 60px -10px rgba(0, 0, 0, 0.5),
    0 0 100px -20px rgba(255, 255, 255, 0.04);
}

.video-wrapper video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

.video-border {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  pointer-events: none;
}

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

.section-divider::before {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.features {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px -10px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 16px;
  opacity: 0.7;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.feature-card a {
  color: #ffffff;
  border-bottom: 1px solid var(--border-hover);
  transition: border-color 0.2s ease;
}

.feature-card a:hover {
  border-color: #ffffff;
}

.workflow {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.workflow h2 {
  font-size: clamp(2rem, 4.5vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.workflow-steps {
  display: flex;
  gap: 16px;
  text-align: left;
}

.step {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all 0.3s ease;
}

.step:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: 0 8px 30px -10px rgba(0, 0, 0, 0.3);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
  letter-spacing: 0.08em;
  opacity: 0.5;
}

.step-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.chat-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.chat-section h2 {
  font-size: clamp(2rem, 4.5vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.chat-convo {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  max-width: 700px;
  margin: 0 auto;
}

.chat-msg {
  max-width: 82%;
  padding: 14px 18px;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.6;
}

.chat-msg.user {
  align-self: flex-end;
  background: #1c1c30;
  border: 1px solid #2a2a40;
  color: var(--text);
}

.chat-msg.ai {
  align-self: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.chat-msg .label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.chat-msg code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: rgba(255,255,255,0.06);
  padding: 1px 5px;
  border-radius: 4px;
}

.structure {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.structure h2 {
  font-size: clamp(2rem, 4.5vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.structure-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  max-width: 640px;
  margin: 0 auto;
}

.struct-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 20px;
  text-align: left;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 14px;
}

.struct-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.struct-item code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #ffffff;
  white-space: nowrap;
}

.struct-item span {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-left: auto;
}

.struct-item span::before {
  content: '—';
  margin-right: 8px;
  color: var(--border);
}

.bottom-cta {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 120px 24px 100px;
  text-align: center;
  position: relative;
}

.bottom-cta::before {
  content: '';
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.04) 0%, transparent 60%);
  pointer-events: none;
}

.bottom-cta h2 {
  font-size: clamp(2.4rem, 5.5vw, 3.4rem);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
  position: relative;
}

.bottom-cta p {
  color: var(--text-dim);
  font-size: 1.15rem;
  margin-bottom: 40px;
  position: relative;
}

.reach-out {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.reach-out h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.reach-out-sub {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 40px;
}

.reach-out-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.reach-out-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 48px;
  transition: all 0.3s ease;
  text-decoration: none;
  min-width: 240px;
}

.reach-out-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px -10px rgba(0, 0, 0, 0.3);
}

.reach-out-card-label {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.reach-out-card-text {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer {
  border-top: 1px solid var(--border);
  padding: 36px 24px;
  text-align: center;
}

.footer p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s ease;
}

.footer a:hover {
  border-color: var(--text-dim);
}

@media (max-width: 900px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .workflow-steps {
    flex-direction: column;
  }
}

@media (max-width: 600px) {
  .hero {
    padding-top: 130px;
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero h1 {
    font-size: 2.4rem;
  }
  .hero-sub {
    font-size: 1.05rem;
  }
  .structure-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  .hero-actions .cta {
    width: 100%;
    max-width: 280px;
  }
  .nav-inner {
    padding: 0 16px;
  }
  .reach-out-links {
    flex-direction: column;
    align-items: center;
  }
  .reach-out-card {
    padding: 24px 32px;
  }
  .struct-item span::before {
    display: none;
  }
  .struct-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .struct-item span {
    margin-left: 0;
  }
  .chat-msg {
    max-width: 92%;
  }
}

@media (min-width: 1400px) {
  .hero {
    padding-top: 200px;
  }
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f5f5;
    --border: #e5e5e5;
    --border-hover: #d0d0d0;
    --text: #18181b;
    --text-dim: #52525b;
    --text-muted: #a1a1aa;
  }

  body::before {
    background-image: radial-gradient(circle, rgba(0,0,0,0.05) 1px, transparent 1px);
  }

  .nav {
    background: rgba(250, 250, 250, 0.8);
  }

  .gradient-text {
    background: linear-gradient(135deg, #18181b 20%, #71717a 100%);
    -webkit-background-clip: text;
    background-clip: text;
  }

  .logo-text {
    background: linear-gradient(135deg, #18181b 30%, #71717a 100%);
    -webkit-background-clip: text;
    background-clip: text;
  }

  .cta {
    background: #18181b;
    color: #fafafa;
  }

  .cta:hover {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  }

  .hero-glow {
    background: radial-gradient(ellipse, rgba(0, 0, 0, 0.03) 0%, transparent 60%);
  }

  .video-wrapper {
    box-shadow:
      0 0 0 1px var(--border),
      0 20px 60px -10px rgba(0, 0, 0, 0.1),
      0 0 100px -20px rgba(0, 0, 0, 0.02);
  }

  .feature-card a {
    color: #18181b;
  }

  .feature-card a:hover {
    border-color: #18181b;
  }

  .step-num {
    color: #18181b;
  }

  .chat-msg.user {
    background: #eef0ff;
    border-color: #dde0f0;
  }

  .chat-msg code {
    background: rgba(0,0,0,0.06);
  }

  .struct-item code {
    color: #18181b;
  }

  .platform-badge em {
    background: rgba(0,0,0,0.06);
  }

  .bottom-cta::before {
    background: radial-gradient(ellipse, rgba(0, 0, 0, 0.03) 0%, transparent 60%);
  }

  .reach-out-card-label {
    color: #18181b;
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}