:root {
  --bg: #0a0a0f;
  --bg-surface: #111118;
  --bg-elevated: #1a1a22;
  --fg: #f0f0f5;
  --fg-muted: #8888a0;
  --accent: #00e5c3;
  --accent-dim: rgba(0, 229, 195, 0.12);
  --red: #ff5f5f;
  --yellow: #ffd84d;
  --green: #5fdf7a;
  --border: rgba(255, 255, 255, 0.07);
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.03em;
  color: var(--fg);
}
.logo::after {
  content: ' / ';
  color: var(--accent);
  font-weight: 400;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 24px 80px;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 229, 195, 0.06) 0%, transparent 70%);
}
.hero-content {
  max-width: 760px;
  margin: 0 auto;
  text-align: left;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 28px;
  font-family: 'DM Mono', monospace;
  letter-spacing: 0.02em;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero-title {
  font-size: clamp(42px, 7vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--fg);
  margin-bottom: 24px;
}
.title-accent {
  color: var(--accent);
  display: block;
}
.hero-sub {
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--fg-muted);
  max-width: 540px;
  line-height: 1.65;
  font-weight: 400;
}

/* Code Demo */
.code-demo {
  padding: 0 24px 80px;
}
.demo-window {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255,255,255,0.03);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28c840; }
.window-title {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--fg-muted);
  margin-left: 8px;
}
.diff-content {
  padding: 20px 0;
  font-family: 'DM Mono', monospace;
  font-size: 13px;
  line-height: 1.7;
}
.diff-line {
  display: flex;
  align-items: baseline;
  padding: 2px 18px;
}
.diff-line.added {
  background: rgba(95, 223, 122, 0.08);
}
.line-num {
  display: inline-block;
  width: 36px;
  color: var(--fg-muted);
  font-size: 11px;
  text-align: right;
  padding-right: 16px;
  opacity: 0.5;
  user-select: none;
}
.line-code {
  color: var(--fg);
}
.diff-line.removed .line-code {
  color: #ff8080;
}
.diff-line.added .line-code {
  color: var(--accent);
}
.panda-comment {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 18px;
  margin: 6px 0;
  background: var(--accent-dim);
  border-left: 3px solid var(--accent);
}
.panda-badge {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0, 229, 195, 0.15);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
  margin-top: 2px;
}
.comment-text {
  color: #c8c8d8;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  line-height: 1.5;
}

/* Features */
.features {
  padding: 80px 24px;
  border-top: 1px solid var(--border);
}
.features-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.features-label {
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 48px;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.feature-card {
  background: var(--bg-surface);
  padding: 40px;
}
.feature-card.offset {
  background: var(--bg-elevated);
}
.feature-icon {
  color: var(--accent);
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.feature-card p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* Closing */
.closing {
  padding: 100px 24px;
  background: radial-gradient(ellipse 60% 50% at 50% 100%, rgba(0, 229, 195, 0.05) 0%, transparent 70%);
}
.closing-inner {
  max-width: 760px;
  margin: 0 auto;
}
.closing-quote {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.3;
  color: var(--fg);
  margin-bottom: 20px;
}
.closing-sub {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 500px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.02em;
}
.footer-tagline {
  font-size: 14px;
  color: var(--fg-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content { text-align: left; }
  .hero { padding-top: 120px; text-align: left; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card.offset { background: var(--bg-surface); }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 36px; }
  .feature-card { padding: 28px 24px; }
  .diff-content { font-size: 12px; }
}