/* ── tokens ── */
:root {
  --paper:     #f7f7f2;
  --ink:       #1a1a18;
  --blue:      #315dff;
  --muted:     #6b6b63;
  --border:    #d4d4cc;
  --col:       1100px;
  --font-body: 'Newsreader', 'EB Garamond', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'Space Mono', monospace;

  --dark-bg:      #0a0a08;
  --dark-surface: #111110;
  --dark-border:  rgba(255, 255, 255, 0.1);
  --dark-muted:   rgba(255, 255, 255, 0.5);
}

/* ── reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--dark-bg); color: #fff; font-family: var(--font-body); -webkit-font-smoothing: antialiased; }
code { font-family: var(--font-mono); font-size: 0.875em; }
img, svg { display: block; max-width: 100%; }

/* ── nav ── */
.nav-wrap { background: #0d0d0b; border-bottom: 1px solid var(--dark-border); }
nav {
  max-width: var(--col); margin: 0 auto;
  padding: 0.75rem 2.5rem;
  display: flex; justify-content: space-between; align-items: center;
}
.wordmark {
  font-family: var(--font-mono); font-size: 0.85rem;
  letter-spacing: 0.08em; color: var(--blue); text-decoration: none;
}
.nav-links { font-family: var(--font-mono); font-size: 0.75rem; display: flex; gap: 1.5rem; align-items: center; }
.nav-links a { color: var(--dark-muted); text-decoration: none; transition: color 0.15s; }
.nav-links a:hover { color: #fff; }
.nav-links a.cta {
  color: var(--blue); border: 1px solid var(--blue);
  padding: 0.3rem 0.75rem; transition: background 0.15s, color 0.15s;
}
.nav-links a.cta:hover { background: var(--blue); color: var(--paper); }

/* ── hero ── */
.hero-wrap {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--dark-bg);
  overflow: hidden;
  isolation: isolate;
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.5) brightness(0.55);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: #2a4fd6;
  mix-blend-mode: multiply;
}
.hero {
  position: relative;
  z-index: 1;
  max-width: var(--col); margin: 0 auto;
  padding: 6rem 2.5rem;
  width: 100%;
}
.hero-text { border-left: 3px solid var(--blue); padding-left: 1.5rem; max-width: 52ch; }
.hero-kicker {
  font-family: var(--font-mono); font-size: 0.65rem;
  letter-spacing: 0.15em; color: var(--blue); margin-bottom: 1rem;
}
.hero-headline {
  font-size: 3.5rem; font-weight: 500; line-height: 1.05; margin-bottom: 1.25rem;
  color: #fff;
}
.hero-headline .accent { color: var(--blue); }
.hero-deck {
  font-size: 1.05rem; line-height: 1.65; color: rgba(255,255,255,0.6);
  margin-bottom: 2rem; max-width: 36ch;
}
.cta-btn {
  display: inline-block; background: var(--blue); color: var(--paper);
  font-family: var(--font-mono); font-size: 0.8rem;
  padding: 0.7rem 1.5rem; text-decoration: none; letter-spacing: 0.05em;
  transition: opacity 0.15s;
}
.cta-btn:hover { opacity: 0.88; }

/* ── sections ── */
section { max-width: var(--col); margin: 0 auto; padding: 3.5rem 2.5rem; border-bottom: 1px solid var(--dark-border); }
.section-kicker {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.15em; color: var(--blue); margin-bottom: 1.5rem;
}
.section-title { font-size: 1.6rem; font-weight: 500; margin-bottom: 0.5rem; color: #fff; }
.section-sub { color: var(--dark-muted); font-size: 1rem; margin-bottom: 2.5rem; }

/* ── how it works steps ── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 2rem; }
.step { border: none; padding: 0; position: relative; }
.step::before {
  content: attr(data-n); font-family: var(--font-mono); font-size: 0.6rem;
  color: var(--blue); position: absolute; top: 0.5rem; right: 0;
}
.step-diagram { margin-bottom: 1rem; }
.step-diagram svg { width: 100%; border: 1px solid var(--dark-border); }
.step h3 { margin-top: 0.75rem; }
.step h3 { font-family: var(--font-mono); font-size: 0.75rem; color: var(--blue); margin-bottom: 0.5rem; }
.step p { font-size: 0.9rem; color: var(--dark-muted); line-height: 1.55; }

/* ── spec table ── */
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.spec-table th {
  font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.1em;
  color: var(--dark-muted); text-align: left; padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--dark-border);
}
.spec-table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--dark-border); vertical-align: top; }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table td:first-child {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--blue);
  white-space: nowrap; width: 200px;
}
.spec-table td:last-child { color: var(--dark-muted); font-size: 0.875rem; line-height: 1.55; }

/* ── ledger ── */
.ledger { border: 1px solid var(--dark-border); width: 100%; }
.ledger-header {
  font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.12em;
  color: var(--paper); background: rgba(49,93,255,0.15); padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--dark-border);
}
.ledger-row {
  display: flex; justify-content: space-between;
  padding: 0.65rem 1rem; border-bottom: 1px solid var(--dark-border);
}
.ledger-row:last-child { border-bottom: none; }
.ledger-row .item { color: var(--dark-muted); font-size: 0.8rem; }
.ledger-row .val { font-family: var(--font-mono); font-size: 0.8rem; color: #fff; }
.ledger-total {
  display: flex; justify-content: space-between;
  padding: 0.75rem 1rem; border-top: 1px solid rgba(49,93,255,0.4);
}
.ledger-total .label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; color: var(--dark-muted); }
.ledger-total .price { font-family: var(--font-mono); font-size: 1rem; color: var(--blue); }

/* ── signup ── */
.signup-box { border: 1px solid var(--dark-border); max-width: 480px; padding: 2rem; margin: 0 auto; }
.signup-box h3 { font-size: 1.3rem; margin-bottom: 0.4rem; color: #fff; }
.signup-box p { color: var(--dark-muted); font-size: 0.875rem; margin-bottom: 1.5rem; }
.field-group { display: flex; flex-direction: column; gap: 0.75rem; }
.field-group label { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.1em; color: var(--dark-muted); }
.field-group input {
  border: 1px solid var(--dark-border); background: var(--dark-surface); color: #fff;
  padding: 0.6rem 0.75rem; font-family: var(--font-mono); font-size: 0.8rem; outline: none;
  border-radius: 0;
}
.field-group input:focus { border-color: var(--blue); }
.field-group input::placeholder { color: rgba(255,255,255,0.25); }
.submit-btn {
  width: 100%; background: var(--blue); color: var(--paper); border: none;
  font-family: var(--font-mono); font-size: 0.8rem; padding: 0.75rem;
  cursor: pointer; letter-spacing: 0.08em; margin-top: 0.5rem;
  transition: opacity 0.15s;
}
.submit-btn:hover { opacity: 0.88; }

/* ── footer ── */
.footer-wrap { border-top: 1px solid var(--dark-border); }
footer {
  max-width: var(--col); margin: 0 auto;
  padding: 1.5rem 2.5rem;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-copy { font-family: var(--font-mono); font-size: 0.65rem; color: var(--dark-muted); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-family: var(--font-mono); font-size: 0.65rem; color: var(--dark-muted); text-decoration: none; }
.footer-links a:hover { color: var(--blue); }

/* ── mobile ── */
@media (max-width: 768px) {
  nav { padding: 0.75rem 1.25rem; }
  .hero { padding: 4rem 1.25rem; }
  .hero-headline { font-size: 2.4rem; }
  section { padding: 2.5rem 1.25rem; }
  .steps { grid-template-columns: 1fr; }
  .spec-table td:first-child { width: 140px; white-space: normal; }
  footer { padding: 1.25rem; flex-direction: column; gap: 0.75rem; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 2rem; }
  .nav-links a:not(.cta) { display: none; }
}