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

:root {
  --bg: #0A0A0A;
  --surface: #111111;
  --surface-2: #1A1A1A;
  --accent: #F59E0B;
  --accent-dim: rgba(245, 158, 11, 0.12);
  --text: #F0EBE0;
  --text-2: #8C8C82;
  --text-3: #555550;
  --border: rgba(240, 235, 224, 0.08);
}

html {
  scroll-behavior: smooth;
}

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

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 3px; }

/* NAV */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  z-index: 100;
}
.nav-brand {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 20px;
  color: var(--text);
  letter-spacing: -0.02em;
}
.nav-tagline {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}

/* HERO */
.hero {
  padding: 80px 48px 96px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner { max-width: 900px; }
.hero-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
  font-weight: 500;
}
.hero-headline {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
}
.hero-headline .line-2 { margin-left: 120px; }
.hero-headline .line-4 { margin-left: 60px; }
.hero-headline .accent { color: var(--accent); }
.hero-headline .italic { font-style: italic; }

.hero-lede {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 580px;
  margin-bottom: 56px;
  font-weight: 300;
}

.hero-visual { margin-top: 0; }
.waveform-container {
  width: 100%;
  height: 120px;
  margin-bottom: 32px;
  opacity: 0.85;
}

.hero-stats {
  display: flex;
  gap: 48px;
}
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 36px;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 12px;
  color: var(--text-2);
  letter-spacing: 0.03em;
}

/* MANIFESTO */
.manifesto {
  padding: 80px 48px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.manifesto-inner { max-width: 800px; }
.manifesto-rule {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 36px;
}
.manifesto-quote {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.4;
  color: var(--text);
  font-style: italic;
  margin-bottom: 40px;
  letter-spacing: -0.01em;
}
.manifesto-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.manifesto-body p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-2);
  font-weight: 300;
}

/* STACK */
.stack {
  padding: 96px 48px;
  background: var(--surface);
}
.stack-header { margin-bottom: 64px; }
.section-eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 500;
}
.section-headline {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--text);
}
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.stack-item {
  background: var(--surface);
  padding: 40px 36px;
  transition: background 0.2s;
}
.stack-item:hover { background: var(--surface-2); }
.stack-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 12px;
  color: var(--accent);
  margin-bottom: 20px;
}
.stack-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.stack-item p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-2);
  font-weight: 300;
}

/* HOW */
.how {
  padding: 96px 48px;
  border-top: 1px solid var(--border);
}
.how-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}
.how-left .section-headline { margin-bottom: 20px; }
.how-body {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-2);
  font-weight: 300;
}
.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.step:first-child { border-top: 1px solid var(--border); }
.step-num {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.05em;
  padding-top: 3px;
}
.step-content h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.step-content p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
  font-weight: 300;
}

/* CLOSING */
.closing {
  padding: 96px 48px 120px;
  text-align: center;
}
.closing-inner { max-width: 700px; margin: 0 auto; }
.closing-rule {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin: 0 auto 56px;
}
.closing-headline {
  font-family: 'Instrument Serif', Georgia, serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-bottom: 32px;
}
.closing-headline .small {
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
  font-style: normal;
  margin-bottom: 12px;
}
.closing-headline .large {
  font-size: clamp(52px, 8vw, 96px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--text);
}
.closing-headline .accent { color: var(--accent); }
.closing-headline span { font-style: italic; display: block; }
.closing-body {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  font-weight: 300;
}

/* FOOTER */
.footer {
  padding: 48px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-inner {}
.footer-brand {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 18px;
  color: var(--text);
  margin-bottom: 12px;
}
.footer-copy {
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 8px;
  font-weight: 300;
}
.footer-tagline {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .how-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-headline .line-2 { margin-left: 60px; }
  .hero-headline .line-4 { margin-left: 30px; }
}
@media (max-width: 600px) {
  .nav { padding: 16px 24px; }
  .hero { padding: 48px 24px 64px; }
  .manifesto, .stack, .how { padding: 64px 24px; }
  .closing { padding: 64px 24px 80px; }
  .footer { padding: 32px 24px; }
  .stack-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 24px; }
  .hero-headline .line-2, .hero-headline .line-4 { margin-left: 24px; }
  .hero-headline .line-2, .hero-headline .line-4 { margin-left: 0; }
}