/* ---------- tokens ---------- */
:root {
  --ink-950: #10161d;
  --ink-800: #232c36;
  --ink-600: #4b5763;
  --paper-050: #f7f5ec;
  --paper-100: #edeae0;
  --paper-300: #dad5c4;
  --brass-500: #a5701f;
  --brass-400: #b07a2e;
  --verdigris-600: #33594d;
  --verdigris-400: #3f6b5d;
  --rust-500: #8a3f2d;
  --rust-400: #9c4a36;

  --bg: var(--paper-100);
  --bg-raised: var(--paper-050);
  --ink: var(--ink-950);
  --ink-soft: var(--ink-600);
  --rule: var(--paper-300);
  --accent: var(--brass-500);
  --accent-ink: var(--paper-050);
  --good: var(--verdigris-600);
  --bad: var(--rust-500);
  --receipt-bg: var(--paper-050);
  --receipt-ink: var(--ink-950);
  --receipt-shadow: rgba(16, 22, 29, 0.16);

  --display: Rockwell, "Rockwell Nova", "Roboto Slab", "Arial Narrow Bold", sans-serif;
  --body: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "Consolas", "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--ink-950);
    --bg-raised: var(--ink-800);
    --ink: var(--paper-100);
    --ink-soft: #9aa7b2;
    --rule: #384451;
    --accent: var(--brass-400);
    --accent-ink: var(--ink-950);
    --good: var(--verdigris-400);
    --bad: var(--rust-400);
    --receipt-bg: #1a2129;
    --receipt-ink: var(--paper-100);
    --receipt-shadow: rgba(0, 0, 0, 0.45);
  }
}
:root[data-theme="dark"] {
  --bg: var(--ink-950);
  --bg-raised: var(--ink-800);
  --ink: var(--paper-100);
  --ink-soft: #9aa7b2;
  --rule: #384451;
  --accent: var(--brass-400);
  --accent-ink: var(--ink-950);
  --good: var(--verdigris-400);
  --bad: var(--rust-400);
  --receipt-bg: #1a2129;
  --receipt-ink: var(--paper-100);
  --receipt-shadow: rgba(0, 0, 0, 0.45);
}
:root[data-theme="light"] {
  --bg: var(--paper-100);
  --bg-raised: var(--paper-050);
  --ink: var(--ink-950);
  --ink-soft: var(--ink-600);
  --rule: var(--paper-300);
  --accent: var(--brass-500);
  --accent-ink: var(--paper-050);
  --good: var(--verdigris-600);
  --bad: var(--rust-500);
  --receipt-bg: var(--paper-050);
  --receipt-ink: var(--ink-950);
  --receipt-shadow: rgba(16, 22, 29, 0.16);
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  min-height: 100%;
}
body {
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--display); text-wrap: balance; margin: 0; }
a { color: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 28px; }
.rule { border: none; border-top: 1px solid var(--rule); margin: 0; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

code, .mono { font-family: var(--mono); }
.tnum { font-variant-numeric: tabular-nums; }

/* ---------- masthead ---------- */
header.masthead {
  padding: 22px 0;
}
.masthead .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.wordmark {
  font-family: var(--display);
  font-size: 20px;
  letter-spacing: 0.01em;
}
.wordmark .dot { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav-links a { text-decoration: none; color: var(--ink-soft); }
.nav-links a:hover { color: var(--ink); }
.btn-install {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 9px 16px;
  border-radius: 3px;
  text-decoration: none;
  white-space: nowrap;
}
.btn-install:hover { filter: brightness(1.08); }

/* ---------- hero ---------- */
.hero { padding: 56px 0 64px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: start;
}
.hero h1 {
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.08;
  margin: 14px 0 20px;
  max-width: 14ch;
}
.hero p.lede {
  max-width: 54ch;
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 0 28px;
}
.hero-ctas { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.btn-primary {
  font-family: var(--mono);
  font-size: 14px;
  background: var(--ink);
  color: var(--bg);
  padding: 12px 20px;
  border-radius: 3px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { filter: brightness(1.15); }
.btn-primary .arrow { transition: transform 0.15s ease; }
.btn-primary:hover .arrow { transform: translateX(2px); }

.cmd {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13.5px;
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 10px 12px;
}
.cmd button {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: none;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink-soft);
  padding: 3px 7px;
  cursor: pointer;
}
.cmd button:hover { color: var(--ink); border-color: var(--ink-soft); }

/* ---------- receipt ---------- */
.receipt-shell { display: flex; justify-content: center; }
.receipt {
  background: var(--receipt-bg);
  color: var(--receipt-ink);
  width: 100%;
  max-width: 320px;
  padding: 26px 24px 4px;
  box-shadow: 0 18px 34px -14px var(--receipt-shadow);
  position: relative;
  font-family: var(--mono);
  font-size: 13px;
}
.receipt-notch {
  height: 14px;
  background-image:
    linear-gradient(45deg, var(--bg) 50%, transparent 50%),
    linear-gradient(-45deg, var(--bg) 50%, transparent 50%);
  background-size: 14px 14px;
  background-repeat: repeat-x;
  background-position: left bottom;
}
.receipt-title {
  font-family: var(--display);
  font-size: 15px;
  letter-spacing: 0.02em;
  text-align: center;
  margin-bottom: 2px;
}
.receipt-sub {
  text-align: center;
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.receipt-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 0;
  border-bottom: 1px dashed var(--rule);
}
.receipt-row .k { color: var(--ink-soft); }
.receipt-row .v { text-align: right; }
.receipt-row.total {
  border-bottom: none;
  border-top: 1px solid var(--receipt-ink);
  margin-top: 6px;
  padding-top: 10px;
  font-size: 14px;
}
.receipt-row.total .v { color: var(--good); font-weight: bold; }
.receipt-stamp {
  margin: 16px 0 18px;
  text-align: center;
}
.receipt-stamp span {
  display: inline-block;
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--good);
  border: 2px solid var(--good);
  border-radius: 2px;
  padding: 4px 10px;
  transform: rotate(-4deg);
}
.receipt-caption {
  text-align: center;
  color: var(--ink-soft);
  font-size: 10.5px;
  padding-bottom: 16px;
}

/* ---------- section scaffolding ---------- */
section { padding: 56px 0; }
section > .wrap > .section-head { margin-bottom: 30px; }
.section-head .eyebrow { display: block; margin-bottom: 10px; }
.section-head h2 { font-size: clamp(24px, 3vw, 32px); }
.section-head p { color: var(--ink-soft); max-width: 60ch; margin: 10px 0 0; }

/* ---------- problem: before/after ---------- */
.before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.mini-receipt {
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 18px 20px;
}
.mini-receipt h3 {
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--mono);
  color: var(--ink-soft);
  margin-bottom: 12px;
}
.mini-receipt .line {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 13.5px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--rule);
}
.mini-receipt .line:last-child { border-bottom: none; }
.mini-receipt.bad .cost { color: var(--bad); }
.mini-receipt.good .cost { color: var(--good); }

/* ---------- ledger list (how it works) ---------- */
.ledger { border-top: 1px solid var(--rule); }
.ledger-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}
.ledger-item .label {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.ledger-item .desc { color: var(--ink-soft); max-width: 64ch; }
.ledger-item .desc strong { color: var(--ink); font-weight: 600; }

/* ---------- quickstart terminal ---------- */
.terminal {
  background: var(--ink-950);
  color: #d9e2ea;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--rule);
}
.terminal-bar {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  background: #1a2129;
}
.terminal-bar span {
  width: 10px; height: 10px; border-radius: 50%;
  background: #3a4652;
}
.terminal pre {
  margin: 0;
  padding: 20px;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.7;
  overflow-x: auto;
}
.terminal .c1 { color: var(--brass-400); }
.terminal .c2 { color: #7d8b97; }
.terminal .c3 { color: var(--verdigris-400); }

/* ---------- config table ---------- */
.table-wrap { overflow-x: auto; border-top: 1px solid var(--rule); }
table.config { border-collapse: collapse; width: 100%; min-width: 640px; }
table.config th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 12px 16px 12px 0;
  border-bottom: 1px solid var(--rule);
}
table.config td {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
table.config td.key { font-family: var(--mono); font-size: 13.5px; white-space: nowrap; }
table.config td.default { font-family: var(--mono); font-size: 13.5px; color: var(--accent); white-space: nowrap; }
table.config td.desc { color: var(--ink-soft); font-size: 14.5px; }

/* ---------- faq ---------- */
.faq-item { border-bottom: 1px solid var(--rule); padding: 20px 0; }
.faq-item summary {
  cursor: pointer;
  font-family: var(--display);
  font-size: 16.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--mono);
  color: var(--accent);
  font-size: 20px;
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item p { color: var(--ink-soft); margin: 12px 0 0; max-width: 66ch; }

/* ---------- footer ---------- */
footer { padding: 48px 0 64px; }
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 28px;
}
.footer-grid .fine { color: var(--ink-soft); font-size: 13px; }
.footer-grid .fine .mono { color: var(--ink-soft); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .receipt-shell { justify-content: flex-start; }
  .before-after { grid-template-columns: 1fr; }
  .ledger-item { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .nav-links a:not(.btn-install) { display: none; }
}