:root {
  --bg: #0c0c10;
  --surface: #14141a;
  --surface-2: #1c1c24;
  --border: #2a2a36;
  --text: #f0eee8;
  --text-dim: #7a7880;
  --accent: #00e87a;
  --accent-dim: rgba(0, 232, 122, 0.12);
  --accent-2: #00c8f0;
  --accent-2-dim: rgba(0, 200, 240, 0.12);
  --red: #ff4d6a;

  --font-head: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --radius: 10px;
  --radius-lg: 18px;
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

.noise-overlay {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* Hero */
.hero {
  position: relative;
  padding: 80px 0 60px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(0,232,122,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-dim);
  border: 1px solid rgba(0,232,122,0.2);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 24px;
}

.hero-title br { display: block; }

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-dim);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 56px;
}

/* Sprite demo */
.sprite-demo {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.demo-frame, .demo-result {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
  min-width: 120px;
}

.frame-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.sprite-figure {
  width: 48px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  border-radius: 6px;
  margin: 0 auto;
}

/* Animation placeholders */
.run-anim { transform: skewX(-8deg); }
.attack-anim { transform: rotate(-20deg); }

.sheet-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3px;
  width: 72px;
}

.sheet-cell {
  background: var(--surface-2);
  border-radius: 2px;
  height: 18px;
}

.sheet-cell:nth-child(3n+1) { background: rgba(0,232,122,0.15); }
.sheet-cell:nth-child(3n+2) { background: rgba(0,232,122,0.08); }
.sheet-cell:nth-child(3n) { background: rgba(0,200,240,0.1); }

.demo-arrow {
  color: var(--text-dim);
  font-size: 1.4rem;
  font-weight: 300;
}

/* Demo strip */
.demo-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 20px 0;
  position: relative;
  z-index: 1;
}

.strip-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.strip-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  white-space: nowrap;
}

.engine-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.engine-pill {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-dim);
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 100px;
}

.engine-pill.accent {
  color: var(--accent);
  border-color: rgba(0,232,122,0.25);
  background: var(--accent-dim);
}

.strip-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 4px;
}

/* Features */
.features {
  padding: 100px 0;
}

.features-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 40px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.feature-card {
  background: var(--surface);
  padding: 36px 32px;
  position: relative;
  transition: background 0.2s;
}

.feature-card:hover {
  background: var(--surface-2);
}

.feature-card.wide {
  grid-column: span 2;
}

.feature-icon {
  color: var(--accent);
  margin-bottom: 20px;
  opacity: 0.8;
}

.feature-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.65;
}

/* Closing */
.closing {
  padding: 80px 0 100px;
  border-top: 1px solid var(--border);
}

.closing-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}

.closing-quote {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 500;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: -0.02em;
  max-width: 720px;
  margin-bottom: 28px;
  font-style: italic;
}

.closing-sub {
  font-size: 0.95rem;
  color: var(--text-dim);
  max-width: 520px;
  line-height: 1.7;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand { display: flex; align-items: center; gap: 10px; }

.footer-name {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 768px) {
  .hero { padding: 60px 0 48px; }
  .hero-title { font-size: 2.4rem; }
  .sprite-demo { gap: 10px; }
  .demo-frame, .demo-result { min-width: 90px; padding: 16px; }
  .demo-arrow { font-size: 1.1rem; }
  .sheet-grid { width: 56px; }
  .sheet-cell { height: 14px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card.wide { grid-column: span 1; }
  .features { padding: 60px 0; }
  .strip-divider { display: none; }
  .strip-inner { gap: 14px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-sub { font-size: 0.95rem; }
  .feature-card { padding: 28px 24px; }
  .closing-quote { font-size: 1.3rem; }
}