/* Plainvault: "Ledger" design. Warm paper, serif headlines, mono figures. */
:root {
  --paper: #f7f5f0;
  --card: #ffffff;
  --ink: #16181d;
  --muted: #5e6168;
  --faint: #8b8e94;
  --rule: #e3dfd6;
  --rule-strong: #cfc9bc;
  --accent: #0f7b5f;
  --accent-ink: #ffffff;
  --accent-soft: #e3f0ea;
  --amber: #b4530a;
  --amber-soft: #fbeedd;
  --red: #b42318;
  --code-bg: #fbfaf7;
  --shadow: 0 1px 0 rgba(22, 24, 29, 0.04), 0 12px 32px -16px rgba(22, 24, 29, 0.18);
  --radius: 12px;
  --max: 1120px;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131518;
    --card: #1a1d21;
    --ink: #ece9e2;
    --muted: #a2a5ab;
    --faint: #767a81;
    --rule: #2a2e34;
    --rule-strong: #3a3f46;
    --accent: #4fc7a0;
    --accent-ink: #0c1f19;
    --accent-soft: #17302a;
    --amber: #f0a35a;
    --amber-soft: #3a2a17;
    --red: #ff8a80;
    --code-bg: #16191c;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 12px 32px -16px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--sans); }
a { color: var(--accent); text-underline-offset: 3px; }
img, svg { max-width: 100%; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } body { font-size: 16px; } }

/* Type */
h1, h2, h3 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.015em; margin: 0; }
h1 { font-size: clamp(40px, 6vw, 68px); line-height: 1.02; }
h2 { font-size: clamp(30px, 4vw, 42px); line-height: 1.1; margin-bottom: 14px; }
h3 { font-size: 22px; line-height: 1.25; margin-bottom: 6px; }
h1 em, h2 em { font-style: italic; color: var(--accent); }
.eyebrow { font: 500 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 22px; display: flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--rule-strong); }
.lede { font-size: 19px; color: var(--muted); max-width: 600px; margin: 20px 0 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.mono, .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* Header */
header.site { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font: 600 18px/1 var(--sans); letter-spacing: -0.01em; }
.logo svg { width: 22px; height: 22px; color: var(--accent); }
nav.main { display: flex; gap: 26px; align-items: center; }
nav.main a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav.main a:hover, nav.main a[aria-current="page"] { color: var(--ink); }
nav.main .btn { padding: 8px 14px; font-size: 14px; }
@media (max-width: 760px) {
  nav.main a:not(.btn) { display: none; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; background: var(--ink); color: var(--paper) !important; padding: 12px 20px; border-radius: 999px; text-decoration: none; font: 500 15px/1 var(--sans); border: 1px solid var(--ink); cursor: pointer; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn.accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink) !important; }
.btn.ghost { background: transparent; color: var(--ink) !important; border-color: var(--rule-strong); }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }

/* Sections */
main section { padding-block: 88px; }
main section.tight { padding-block: 56px; }
.rule-top { border-top: 1px solid var(--rule); }
.section-head { max-width: 680px; margin-bottom: 44px; }
.section-head p:not(.eyebrow) { color: var(--muted); margin: 0; font-size: 18px; }
@media (max-width: 600px) { main section { padding-block: 60px; } }

/* Hero */
.hero { padding-top: 72px !important; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }
.price-line { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 6px 18px; font: 400 14px/1.4 var(--mono); color: var(--muted); }
.price-line span::before { content: "✓ "; color: var(--accent); }

/* Swap-and-forward panel */
.swap { position: relative; display: grid; gap: 0; }
.panel { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--rule); font: 500 12px/1 var(--mono); color: var(--muted); }
.panel-head .tag { display: inline-flex; align-items: center; gap: 6px; }
.panel-head .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--rule-strong); }
.panel pre { margin: 0; padding: 14px 16px; font: 400 13px/1.65 var(--mono); background: var(--code-bg); overflow-x: auto; color: var(--ink); }
.k { color: var(--muted); }
.s { color: var(--ink); }
.tok { color: var(--amber); background: var(--amber-soft); border-radius: 4px; padding: 1px 4px; transition: color .4s, background .4s; }
.pan { color: var(--accent); background: var(--accent-soft); border-radius: 4px; padding: 1px 4px; }
.connector { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 14px; padding: 12px 0 12px 22px; position: relative; }
.connector::before { content: ""; position: absolute; left: 30px; top: 0; bottom: 0; width: 1px; background: repeating-linear-gradient(to bottom, var(--rule-strong) 0 4px, transparent 4px 8px); }
.vault-chip { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 8px; background: var(--ink); color: var(--paper); border-radius: 999px; padding: 7px 14px 7px 10px; font: 500 13px/1 var(--mono); }
.vault-chip svg { width: 15px; height: 15px; }
.connector .note { font: 400 12px/1.4 var(--mono); color: var(--muted); }
.psp-select { font: 500 12px/1 var(--mono); color: var(--ink); background: transparent; border: 1px solid var(--rule); border-radius: 6px; padding: 4px 6px; cursor: pointer; }
.status-ok { color: var(--accent); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step { padding: 24px 28px 8px 0; }
.step + .step { padding-left: 28px; border-left: 1px solid var(--rule); }
@media (max-width: 860px) { .step + .step { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); } }
.step .n { font: 500 13px/1 var(--mono); color: var(--accent); display: block; margin-bottom: 16px; }
.step p { color: var(--muted); margin: 0 0 18px; }
.step .panel pre { font-size: 12px; }

/* Ledger table (shared by comparisons and price list) */
.ledger { width: 100%; border-collapse: collapse; font-size: 15px; }
.ledger th, .ledger td { padding: 14px 12px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.ledger thead th { font: 500 11px/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--ink); }
.ledger td.num, .ledger th.num { text-align: right; font-family: var(--mono); white-space: nowrap; }
.ledger tr.us td { background: var(--accent-soft); font-weight: 600; }
.ledger tr.us td:first-child { border-radius: 8px 0 0 8px; }
.ledger tr.us td:last-child { border-radius: 0 8px 8px 0; }
.ledger thead .sub { text-transform: none; letter-spacing: 0; font-family: var(--sans); }
.ledger .sub { display: block; font-size: 13px; color: var(--muted); font-weight: 400; margin-top: 2px; }
.ledger td:first-child, .ledger th:first-child { padding-left: 0; }
.ledger tr.us td:first-child { padding-left: 12px; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.savings { color: var(--accent); font-family: var(--mono); font-size: 13px; font-weight: 500; }
.source-note { font-size: 13px; color: var(--muted); margin-top: 16px; max-width: 760px; }

/* Price block */
.price-block { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .price-block { grid-template-columns: 1fr; gap: 32px; } }
.big-price { font: 500 clamp(64px, 9vw, 104px)/0.9 var(--serif); letter-spacing: -0.03em; }
.big-price small { font: 400 16px/1 var(--sans); color: var(--muted); letter-spacing: 0; margin-left: 6px; }
.includes { list-style: none; padding: 0; margin: 24px 0 0; }
.includes li { padding: 10px 0; border-top: 1px solid var(--rule); display: flex; gap: 10px; }
.includes li::before { content: "✓"; color: var(--accent); font-weight: 600; }
.formula { font: 400 14px/1.7 var(--mono); background: var(--card); border: 1px dashed var(--rule-strong); border-radius: 10px; padding: 14px 16px; margin-top: 22px; color: var(--muted); }
.formula b { color: var(--ink); font-weight: 500; }

/* Cards */
.grid { display: grid; gap: 1px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); background: var(--rule); border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; }
.cell { background: var(--card); padding: 26px 24px; }
.cell p { margin: 0; color: var(--muted); font-size: 15px; }
.cell .icon { width: 28px; height: 28px; color: var(--accent); margin-bottom: 16px; }

/* Calculator */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
@media (max-width: 860px) { .calc { grid-template-columns: 1fr; } }
.calc-inputs { padding: 28px; border-right: 1px solid var(--rule); }
@media (max-width: 860px) { .calc-inputs { border-right: 0; border-bottom: 1px solid var(--rule); } }
.calc-out { padding: 28px; background: var(--code-bg); }
.slider-row { margin-bottom: 28px; }
.slider-row .top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.slider-row label { font-weight: 500; font-size: 15px; margin: 0; }
.slider-row input[type=text] { width: 130px; text-align: right; font: 500 16px/1 var(--mono); padding: 8px 10px; border: 1px solid var(--rule); border-radius: 8px; background: var(--paper); color: var(--ink); }
.slider-row .hint { font-size: 13px; color: var(--muted); margin-top: 8px; }
input[type=range] { width: 100%; accent-color: var(--accent); }
.presets { display: flex; gap: 8px; flex-wrap: wrap; }
.presets button { font: 400 13px/1 var(--mono); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); cursor: pointer; }
.presets button:hover, .presets button.on { border-color: var(--accent); color: var(--accent); }
.bill-total { font: 500 56px/1 var(--serif); letter-spacing: -0.02em; margin: 6px 0 2px; }
.bill-lines { margin: 18px 0 0; display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; font-size: 14px; }
.bill-lines dt { color: var(--muted); }
.bill-lines dd { margin: 0; font-family: var(--mono); text-align: right; }
.compare-bars { margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--rule); display: grid; gap: 12px; }
.bar { display: grid; grid-template-columns: 110px 1fr 92px; align-items: center; gap: 12px; font-size: 13px; }
.bar .track { display: block; height: 10px; background: var(--rule); border-radius: 99px; overflow: hidden; }
.bar .fill { display: block; height: 100%; border-radius: 99px; background: var(--faint); transition: width .35s ease; }
.bar.us .fill { background: var(--accent); }
.bar .v { font-family: var(--mono); text-align: right; }
.bar.us { font-weight: 600; }
.verdict { margin-top: 16px; font-size: 14px; }

/* Notices and status */
.notice { border-left: 3px solid var(--amber); background: var(--amber-soft); border-radius: 0 10px 10px 0; padding: 14px 18px; font-size: 15px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; gap: 36px; } }

/* FAQ */
details { border-top: 1px solid var(--rule); padding: 18px 0; }
details:last-of-type { border-bottom: 1px solid var(--rule); }
summary { cursor: pointer; font: 500 18px/1.35 var(--serif); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-family: var(--mono); color: var(--muted); }
details[open] summary::after { content: "–"; }
details p { color: var(--muted); margin: 10px 0 0; max-width: 720px; }

/* Final CTA band */
.cta-band { background: var(--ink); color: var(--paper); border-radius: 18px; padding: 56px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: center; }
.cta-band h2 { color: var(--paper); }
.cta-band p { color: color-mix(in srgb, var(--paper) 70%, transparent); margin: 0; }
.cta-band .btn { background: var(--paper); color: var(--ink) !important; border-color: var(--paper); }
@media (max-width: 760px) { .cta-band { grid-template-columns: 1fr; padding: 36px 24px; } }

/* Forms */
.form-card { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); padding: 32px; }
@media (max-width: 600px) { .form-card { padding: 22px 18px; } }
fieldset { border: 0; padding: 0; margin: 0 0 12px; }
legend { font: 500 12px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); padding: 0; margin-bottom: 16px; }
fieldset + fieldset { border-top: 1px solid var(--rule); padding-top: 24px; }
.form-grid { display: grid; gap: 0 20px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 500; font-size: 14px; margin-bottom: 6px; }
.field input, .field select, .field textarea { width: 100%; font: inherit; font-size: 15px; padding: 11px 12px; border: 1px solid var(--rule-strong); border-radius: 8px; background: var(--paper); color: var(--ink); }
.field input:focus, .field select:focus, .field textarea:focus, .slider-row input[type=text]:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.hint { font-size: 13px; color: var(--muted); margin-top: 5px; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--muted); margin: 8px 0 22px; }
.consent input { margin-top: 4px; accent-color: var(--accent); }
.form-status { margin-top: 16px; font-weight: 500; }
.form-status.ok { color: var(--accent); }
.form-status.error { color: var(--red); }
.hp { position: absolute; left: -9999px; }
.perks { list-style: none; padding: 0; margin: 28px 0 0; }
.perks li { padding: 14px 0; border-top: 1px solid var(--rule); }
.perks b { display: block; font-family: var(--serif); font-weight: 500; font-size: 19px; }
.perks span { color: var(--muted); font-size: 15px; }

/* Prose pages */
.prose { max-width: 720px; }
.prose h2 { font-size: 28px; margin-top: 48px; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 8px; }
.prose li::marker { color: var(--accent); }

/* Footer */
footer.site { border-top: 1px solid var(--rule); padding-block: 40px; color: var(--muted); font-size: 14px; }
footer.site .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer.site nav { display: flex; gap: 20px; flex-wrap: wrap; }
footer.site a { color: var(--muted); text-decoration: none; }
footer.site a:hover { color: var(--ink); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }
.section-head p.lede { margin-top: 20px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid.cols-3 { grid-template-columns: 1fr; } }
/* Let grid columns shrink below their content (code panels, tables) on narrow screens. */
.hero-grid > *, .two-col > *, .price-block > *, .calc > *, .steps > *, .swap > * { min-width: 0; }
.table-scroll .ledger { min-width: 640px; }
@media (max-width: 480px) {
  nav.main .btn { padding: 7px 12px; font-size: 13px; }
  .logo { font-size: 16px; }
  .cta-band { border-radius: 14px; }
}