:root {
  --bg: #080808;
  --surface: #111111;
  --surface2: #1a1a1a;
  --fg: #f0f0f0;
  --fg-muted: #888888;
  --accent: #c8f538;
  --accent-dim: rgba(200, 245, 56, 0.12);
  --border: rgba(255,255,255,0.06);
  --radius: 6px;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Geist Mono', monospace;
}

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

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(8,8,8,0.9);
  backdrop-filter: blur(12px);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--fg);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ── HERO ── */
.hero {
  padding: 96px 32px 80px;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.hero-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-bottom: 32px;
}
.label-tag {
  background: var(--accent);
  color: #000;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 2px;
  letter-spacing: 0.05em;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-lede {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 400px;
}

/* ── PREVIEW WINDOW ── */
.preview-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(200,245,56,0.08);
}
.preview-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.12); }
.preview-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  margin-left: 8px;
}
.preview-body { padding: 20px; }
.brief-item {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.brief-item:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.brief-signal {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(200,245,56,0.25);
  padding: 2px 5px;
  border-radius: 2px;
  height: fit-content;
  flex-shrink: 0;
  margin-top: 2px;
}
.brief-content strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 4px;
  font-family: var(--font-display);
}
.brief-content span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--fg-muted);
}
.brief-separator {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  text-align: center;
  padding-top: 16px;
  opacity: 0.6;
}

/* ── BRIEFINGS SECTION ── */
.briefings {
  padding: 96px 32px;
  border-top: 1px solid var(--border);
}
.section-header {
  max-width: 1200px;
  margin: 0 auto 56px;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
}
.briefings-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.brief-card {
  background: var(--surface);
  padding: 40px 36px;
}
.brief-card-icon {
  margin-bottom: 24px;
}
.brief-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.brief-card p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--fg-muted);
}

/* ── HOW IT WORKS ── */
.how-it-works {
  padding: 96px 32px;
  border-top: 1px solid var(--border);
}
.pipeline {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 24px;
  align-items: start;
}
.pipeline-step { }
.step-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  font-weight: 500;
}
.step-body h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.step-body p {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--fg-muted);
  margin-bottom: 16px;
}
.source-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chip {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--fg-muted);
  padding: 3px 8px;
  border-radius: 2px;
}
.pipeline-arrow {
  display: flex;
  align-items: center;
  padding-top: 36px;
}

/* ── SOURCES ── */
.sources {
  padding: 96px 32px;
  border-top: 1px solid var(--border);
}
.sources-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.sources-text h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 20px;
}
.sources-text > p {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--fg-muted);
  margin-bottom: 40px;
}
.source-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.stat-number {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
}

/* Stream diagram */
.stream-diagram {
  display: flex;
  align-items: center;
  gap: 20px;
}
.stream-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.1em;
}
.stream-lines {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.stream-line {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 2px;
  background: var(--surface);
}
.stream-line.p1 { border-left: 2px solid var(--accent); }
.stream-line.p2 { border-left: 2px solid rgba(200,245,56,0.7); }
.stream-line.p3 { border-left: 2px solid rgba(200,245,56,0.5); }
.stream-line.p4 { border-left: 2px solid rgba(200,245,56,0.35); }
.stream-line.p5 { border-left: 2px solid rgba(200,245,56,0.2); }
.stream-merge svg { height: 80px; width: 120px; }
.stream-output { }
.output-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: #000;
  background: var(--accent);
  padding: 8px 16px;
  border-radius: 3px;
}

/* ── CLOSING ── */
.closing {
  padding: 120px 32px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.closing-inner {
  max-width: 640px;
  margin: 0 auto;
}
.closing h2 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 16px;
}
.closing > .closing-inner > p {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 40px;
}
.closing-meta p {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--fg-muted);
}

/* ── FOOTER ── */
.footer {
  padding: 32px;
  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 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.9rem;
}
.footer-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
}

/* ── MOBILE ── */
@media (max-width: 768px) {
  .nav-inner { padding: 14px 20px; }
  .hero { padding: 60px 20px 50px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-text h1 { font-size: 2rem; }
  .briefings, .how-it-works, .sources, .closing { padding: 60px 20px; }
  .briefings-grid { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr; gap: 32px; }
  .pipeline-arrow { display: none; }
  .sources-inner { grid-template-columns: 1fr; gap: 40px; }
  .source-stats { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .stat-number { font-size: 1.6rem; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}