@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/inter-400.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 600; font-display: swap; src: url('fonts/inter-600.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/jetbrains-mono-400.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url('fonts/jetbrains-mono-700.woff2') format('woff2'); }

:root {
  --ink: #0a0a0b; --ink-2: #111113; --ink-3: #16171a; --ink-4: #1e2024;
  --line: #2a2d33; --line-2: #3a3e46;
  --mute: #6b7078; --mute-2: #8b9099;
  --text: #c7ccd3; --text-hi: #e8ebf0;
  --paper: #f4f2ec; --paper-ink: #0a0a0b;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  --sans: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --pad-x: clamp(24px, 4vw, 80px); --pad-section: clamp(48px, 6vw, 96px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--ink); color: var(--mute-2);
  font-family: var(--sans); font-size: 16px; line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 var(--pad-x); }
a { color: var(--text-hi); }
h1, h2, h3 { color: var(--text-hi); letter-spacing: -0.02em; font-weight: 600; }
code, .mono { font-family: var(--mono); }

.label {
  font-family: var(--mono); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.14em; font-size: 0.6875rem; color: var(--mute);
}

/* Masthead */
.masthead { border-bottom: 1px solid var(--line); }
.masthead .row {
  display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center;
  padding: 14px var(--pad-x);
}
.masthead .row span { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.12em; color: var(--mute); text-transform: uppercase; }
.masthead .row span b { color: var(--text); font-weight: 700; }
.masthead .row .spacer { flex: 1; }
.masthead .row .brand { display: inline-flex; align-items: center; }
.masthead .row .brand img { display: block; }
.masthead .row a { color: var(--mute-2); text-decoration: none; }
.masthead .row a:hover { color: var(--text-hi); }

/* Section scaffolding */
section { padding: var(--pad-section) 0; border-bottom: 1px solid var(--line); }
.sec-label { margin: 0 0 24px; }
.lead-in { color: var(--text); max-width: 64ch; }

/* Hero */
.hero h1 { font-size: clamp(2rem, 5vw, 3.25rem); margin: 0 0 20px; line-height: 1.08; }
.hero p.lede { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--text); max-width: 60ch; margin: 0 0 32px; }
.btns { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn {
  font-family: var(--mono); font-weight: 700; font-size: 0.8125rem; letter-spacing: 0.06em;
  text-transform: uppercase; text-decoration: none; padding: 13px 22px; display: inline-flex; gap: 10px;
}
.btn.primary { background: var(--paper); color: var(--paper-ink); }
.btn.ghost { background: transparent; color: var(--text-hi); border: 1px solid var(--line); }
.btn:hover { transform: translateY(-1px); }

/* Grid-of-cells (hairline gaps) */
.grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cell { background: var(--ink); padding: 22px 24px; }
.cell h3 { margin: 0 0 8px; font-size: 1rem; }
.cell code { font-size: 0.85rem; color: var(--text-hi); }
.cell p { margin: 6px 0 0; font-size: 0.95rem; color: var(--mute-2); }

/* Chain */
.chain { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.chain .step { background: var(--ink); padding: 22px 24px; display: flex; gap: 22px; align-items: baseline; }
.chain .num { font-family: var(--mono); font-weight: 700; font-size: 3rem; line-height: 1; color: var(--line-2); min-width: 2ch; }
.chain .step h3 { margin: 0 0 4px; }
.chain .step code { color: var(--text-hi); }

/* Code block */
pre {
  background: var(--ink-2); border: 1px solid var(--line); padding: 20px 22px; overflow-x: auto;
  font-family: var(--mono); font-size: 0.85rem; line-height: 1.6; color: var(--text);
}
pre .c { color: var(--mute); }

/* CTA panel */
.cta { background: var(--ink-2); border: 1px solid var(--line); padding: clamp(28px, 4vw, 44px); }
.cta h2 { margin: 0 0 10px; font-size: clamp(1.4rem, 3vw, 1.9rem); }
.cta p { color: var(--text); max-width: 58ch; margin: 0 0 24px; }

footer { padding: 40px 0 64px; }
footer p { font-size: 0.85rem; color: var(--mute); }

:focus-visible { outline: 2px solid var(--paper); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } .btn:hover { transform: none; } }
@media (max-width: 860px) {
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
  .masthead .row .spacer { display: none; }
}

/* Tier + FAQ sub-page additions (same tokens) */
.tier-tag { font-family: var(--mono); font-weight: 700; font-size: 0.7rem; letter-spacing: 0.1em; color: var(--mute); }
.faq { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.faq details { background: var(--ink); padding: 0; }
.faq summary { padding: 20px 24px; cursor: pointer; color: var(--text-hi); font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: '+'; font-family: var(--mono); color: var(--mute); margin-right: 14px; }
.faq details[open] summary::before { content: '−'; }
.faq details p { margin: 0; padding: 0 24px 22px; color: var(--mute-2); font-size: 0.95rem; }