:root {
  --bg: #08080E;
  --surface: #0E0E16;
  --surface-2: #14141F;
  --accent: #00E5CC;
  --accent-dim: rgba(0, 229, 204, 0.15);
  --text: #E8E8F0;
  --text-muted: #7A7A94;
  --border: rgba(255, 255, 255, 0.07);
  --font-head: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html { font-size: 16px; }

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

/* Navigation */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 1.25rem 2rem; }
.nav-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 0.75rem; }
.nav-logo { font-family: var(--font-head); font-size: 1rem; font-weight: 600; letter-spacing: -0.01em; }
.nav-badge { font-size: 0.7rem; color: var(--accent); background: var(--accent-dim); padding: 0.2rem 0.6rem; border-radius: 999px; font-family: var(--font-head); letter-spacing: 0.05em; text-transform: uppercase; }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; padding: 6rem 2rem 4rem; }
.hero-grid { max-width: 1200px; margin: 0 auto; width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.hero-content { grid-column: 1; }
.hero-headline { font-family: var(--font-head); font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 700; line-height: 1.08; letter-spacing: -0.03em; margin-bottom: 1.5rem; }
.hero-sub { font-size: 1.05rem; color: var(--text-muted); max-width: 44ch; line-height: 1.7; }

/* GPU Visual */
.hero-visual { grid-column: 2; display: flex; flex-direction: column; gap: 2rem; }
.gpu-stage { position: relative; width: 280px; height: 280px; margin: 0 auto; display: flex; align-items: center; justify-content: center; }
.gpu-core { width: 72px; height: 72px; background: var(--accent); border-radius: 12px; box-shadow: 0 0 40px rgba(0, 229, 204, 0.4), 0 0 80px rgba(0, 229, 204, 0.15); animation: pulse 2.4s ease-in-out infinite; }
.gpu-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(0, 229, 204, 0.25); animation: spin-slow linear infinite; }
.gpu-ring-1 { width: 130px; height: 130px; animation-duration: 8s; }
.gpu-ring-2 { width: 190px; height: 190px; border-color: rgba(0, 229, 204, 0.15); animation-duration: 14s; animation-direction: reverse; }
.gpu-ring-3 { width: 250px; height: 250px; border-color: rgba(0, 229, 204, 0.08); animation-duration: 22s; }
.gpu-label { position: absolute; bottom: -2rem; left: 50%; transform: translateX(-50%); font-family: var(--font-head); font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent); }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 40px rgba(0, 229, 204, 0.4), 0 0 80px rgba(0, 229, 204, 0.15); } 50% { box-shadow: 0 0 60px rgba(0, 229, 204, 0.6), 0 0 120px rgba(0, 229, 204, 0.25); } }
@keyframes spin-slow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.hero-stats { display: flex; justify-content: center; gap: 2.5rem; }
.stat { display: flex; flex-direction: column; align-items: center; gap: 0.15rem; }
.stat-value { font-family: var(--font-head); font-size: 1.8rem; font-weight: 700; color: var(--text); line-height: 1; }
.stat-unit { font-family: var(--font-head); font-size: 0.9rem; font-weight: 500; color: var(--accent); }
.stat-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

/* Capabilities */
.capabilities { padding: 5rem 2rem; border-top: 1px solid var(--border); }
.cap-inner { max-width: 1200px; margin: 0 auto; }
.cap-heading { font-family: var(--font-head); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-muted); margin-bottom: 3rem; font-weight: 500; }
.cap-list { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }
.cap-item { background: var(--surface); padding: 2rem 2.5rem; border-left: 1px solid var(--border); }
.cap-name { font-family: var(--font-head); font-size: 1.05rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--text); }
.cap-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }

/* Manifesto */
.manifesto { padding: 6rem 2rem; background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.manifesto-inner { max-width: 820px; margin: 0 auto; }
.manifesto-quote { font-family: var(--font-head); font-size: clamp(1.2rem, 2.5vw, 1.7rem); font-weight: 400; line-height: 1.5; letter-spacing: -0.01em; color: var(--text); border: none; padding: 0; }
.manifesto-quote::before { content: '\201C'; color: var(--accent); }
.manifesto-quote::after { content: '\201D'; color: var(--accent); }
.manifesto-attr { margin-top: 1.5rem; font-size: 0.8rem; color: var(--text-muted); font-family: var(--font-head); letter-spacing: 0.05em; }

/* Stack */
.stack { padding: 5rem 2rem; }
.stack-inner { max-width: 1200px; margin: 0 auto; }
.stack-heading { font-family: var(--font-head); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-muted); margin-bottom: 3rem; font-weight: 500; }
.stack-row { display: flex; align-items: center; gap: 0; }
.stack-layer { background: var(--surface-2); border: 1px solid var(--border); padding: 1.5rem 2rem; flex: 1; }
.stack-label { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); font-family: var(--font-head); margin-bottom: 0.5rem; }
.stack-name { font-family: var(--font-head); font-size: 1rem; font-weight: 600; margin-bottom: 0.4rem; }
.stack-note { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }
.stack-arrow { width: 32px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 1.2rem; flex-shrink: 0; }
.stack-arrow::before { content: '\2192'; }

/* Closing */
.closing { padding: 8rem 2rem; border-top: 1px solid var(--border); }
.closing-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.closing-headline { font-family: var(--font-head); font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 1.5rem; }
.closing-sub { font-size: 1rem; color: var(--text-muted); max-width: 55ch; margin: 0 auto; line-height: 1.7; }

/* Footer */
.footer { padding: 2.5rem 2rem; border-top: 1px solid var(--border); }
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.footer-brand { font-family: var(--font-head); font-size: 0.9rem; font-weight: 600; }
.footer-note { font-size: 0.8rem; color: var(--text-muted); }

/* Responsive */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { grid-column: 1; }
  .hero-headline { font-size: 2.2rem; }
  .cap-list { grid-template-columns: 1fr; }
  .stack-row { flex-direction: column; }
  .stack-arrow { display: none; }
  .hero-stats { gap: 1.5rem; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}