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

:root {
  --bg: #0a0a0f;
  --bg-card: #111118;
  --fg: #e8e8f0;
  --fg-muted: #7a7a8c;
  --accent: #00e5ff;
  --accent-dim: rgba(0, 229, 255, 0.12);
  --code-bg: #0d0d14;
  --code-keyword: #00e5ff;
  --code-string: #a8e6a3;
  --code-comment: #4a4a5c;
  --code-linenum: #3a3a4a;
  --border: rgba(255,255,255,0.07);
}

html { scroll-behavior: smooth; }

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

/* NAV */
.nav {
  padding: 24px 40px;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}
.nav-logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--fg);
}
.nav-tagline {
  font-size: 13px;
  color: var(--fg-muted);
  font-weight: 400;
}

/* SECTION LABELS */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 48px;
}

/* HERO */
.hero {
  padding: 100px 40px 100px;
  max-width: 1100px;
  margin: 0 auto;
}
.hero-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}
.hero-headline {
  font-size: clamp(52px, 7vw, 88px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -3px;
  color: var(--fg);
  margin-bottom: 32px;
}
.hero-sub {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
  font-weight: 400;
}

/* HOW IT WORKS */
.how-it-works {
  padding: 80px 40px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.step-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.step h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.step p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* WHAT IT CATCHES */
.what-it-catches {
  padding: 80px 40px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.catch-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.catch-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 32px;
}
.catch-icon {
  font-size: 24px;
  margin-bottom: 16px;
  filter: grayscale(1) brightness(1.4);
}
.catch-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}
.catch-card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* CODE PREVIEW */
.code-preview {
  padding: 80px 40px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.code-block {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  font-family: 'IBM Plex Mono', monospace;
}
.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
}
.code-file {
  font-size: 12px;
  color: var(--fg-muted);
}
.code-status {
  font-size: 11px;
  color: #ff6b6b;
  letter-spacing: 0.5px;
}
.code-content {
  padding: 24px 20px;
  font-size: 13px;
  line-height: 1.8;
  overflow-x: auto;
}
.code-line {
  display: block;
}
.code-linenum {
  display: inline-block;
  width: 28px;
  color: var(--code-linenum);
  user-select: none;
  margin-right: 16px;
}
.code-keyword { color: var(--code-keyword); }
.code-string { color: var(--code-string); }
.code-comment { color: var(--code-comment); font-style: italic; }
.code-summary {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.7;
}
.code-summary strong { color: var(--accent); font-weight: 600; }

/* PRINCIPLES */
.principles {
  padding: 80px 40px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.principles-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.principle h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.principle p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 680px;
}

/* CLOSING */
.closing {
  padding: 120px 40px;
  max-width: 1100px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}
.closing-text {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
  color: var(--fg);
}
.closing-sub {
  font-size: 16px;
  color: var(--fg-muted);
  max-width: 540px;
  line-height: 1.7;
}

/* FOOTER */
.footer {
  padding: 48px 40px;
  border-top: 1px solid var(--border);
  max-width: 1100px;
  margin: 0 auto;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.footer-logo {
  font-size: 16px;
  font-weight: 700;
}
.footer-tagline {
  font-size: 13px;
  color: var(--fg-muted);
}
.footer-copy {
  font-size: 13px;
  color: var(--fg-muted);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 72px 24px 72px; }
  .hero-headline { letter-spacing: -2px; }
  .how-it-works { padding: 64px 24px; }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .what-it-catches { padding: 64px 24px; }
  .catch-grid { grid-template-columns: 1fr; }
  .code-preview { padding: 64px 24px; }
  .principles { padding: 64px 24px; }
  .closing { padding: 80px 24px; }
  .footer { padding: 40px 24px; }
  .nav { padding: 20px 24px; }
  .code-content { font-size: 11px; }
}