/* PayerBrief — clean B2B stylesheet. System fonts only. No tracking, no external requests. */

:root {
  --bg: #ffffff;
  --bg-alt: #f7f8f9;
  --ink: #0e1116;
  --ink-2: #3d434b;
  --ink-3: #5f6670;
  --ink-4: #6f7681;
  --rule: #e5e7ea;
  --rule-2: #c8ccd2;
  --accent: #14453a;
  --accent-ink: #0f352c;
  --accent-wash: #f0f5f3;
  --danger: #9b2c2c;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --shadow: 0 1px 2px rgba(14, 17, 22, 0.05);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { width: min(100% - 3rem, 68rem); margin-inline: auto; }
.narrow { width: min(100% - 3rem, 44rem); margin-inline: auto; }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(20,69,58,0.28); }
a:hover { border-bottom-color: var(--accent); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

.skip {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff;
  padding: 0.6rem 1rem; z-index: 100;
}
.skip:focus { left: 0; }

/* ---------------- header ---------------- */

.site-header {
  position: sticky; top: 0; z-index: 30;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; height: 4rem;
}
.wordmark {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-weight: 650; font-size: 1.02rem; letter-spacing: -0.015em;
  color: var(--ink); border-bottom: 0;
}
.wordmark .mark {
  width: 1.05rem; height: 1.05rem; border-radius: 2px;
  background: var(--accent); flex: none;
  position: relative;
}
.wordmark .mark::after {
  content: ""; position: absolute; inset: 4px 4px auto 4px; height: 2px;
  background: #fff; box-shadow: 0 4px 0 #fff, 0 8px 0 rgba(255,255,255,0.55);
}
.wordmark:hover { border-bottom: 0; }

nav.site-nav { display: flex; align-items: center; gap: 1.75rem; }
nav.site-nav a {
  color: var(--ink-2); font-size: 0.9rem; border-bottom: 0; letter-spacing: 0.005em;
}
nav.site-nav a:hover { color: var(--ink); }
nav.site-nav a.cta {
  color: #fff; background: var(--ink); padding: 0.5rem 0.95rem;
  border-radius: 4px; font-weight: 550; font-size: 0.875rem;
  transition: background 120ms ease;
}
nav.site-nav a.cta:hover { background: var(--accent); }

@media (max-width: 720px) {
  nav.site-nav { gap: 1rem; }
  nav.site-nav a.hide-sm { display: none; }
  .site-header .wrap { height: 3.6rem; }
}

/* ---------------- hero ---------------- */

.hero { padding-block: 5.5rem 4.5rem; border-bottom: 1px solid var(--rule); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 4rem; align-items: end; }
@media (max-width: 900px) {
  .hero { padding-block: 3.5rem 3rem; }
  .hero .wrap { grid-template-columns: 1fr; gap: 2.5rem; }
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 1.5rem;
}
.eyebrow::before {
  content: ""; width: 1.6rem; height: 1px; background: var(--accent); display: block;
}

h1 {
  font-size: clamp(2.15rem, 4.2vw, 3.35rem); line-height: 1.1;
  letter-spacing: -0.032em; font-weight: 620; margin: 0 0 1.4rem;
  text-wrap: balance;
}
.lede {
  font-size: 1.1rem; line-height: 1.62; color: var(--ink-2);
  max-width: 38rem; margin: 0 0 2.1rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: center; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.93rem; font-weight: 550; letter-spacing: 0.005em;
  padding: 0.72rem 1.3rem; border-radius: 4px; border: 1px solid transparent;
  text-decoration: none; line-height: 1.2; transition: background 120ms ease, border-color 120ms ease;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.btn-ghost { color: var(--ink); background: #fff; border-color: var(--rule-2); }
.btn-ghost:hover { border-color: var(--ink-3); }
.btn-quiet { color: var(--ink-2); border-color: transparent; padding-inline: 0.5rem; }
.btn-quiet:hover { color: var(--ink); }

/* hero side card — the "what lands in your inbox" summary */
.hero-card {
  border: 1px solid var(--rule); border-radius: 6px; background: var(--bg-alt);
  padding: 1.4rem 1.5rem; box-shadow: var(--shadow);
}
.hero-card .card-label {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-3); margin: 0 0 1rem;
}
.hero-card dl { margin: 0; display: grid; gap: 0.85rem; }
.hero-card dt {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--ink-3); margin-bottom: 0.1rem;
}
.hero-card dd { margin: 0; font-size: 0.94rem; color: var(--ink); }
.hero-card .divider { height: 1px; background: var(--rule); margin: 1.15rem 0; }
.hero-card .fine { font-size: 0.82rem; color: var(--ink-3); margin: 0; line-height: 1.5; }

/* ---------------- generic section ---------------- */

section { padding-block: 4.5rem; }
section.alt { background: var(--bg-alt); border-block: 1px solid var(--rule); }

.section-head { max-width: 40rem; margin-bottom: 2.75rem; }
.section-head .kicker {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 0.9rem;
}
h2 {
  font-size: clamp(1.4rem, 2.3vw, 1.85rem); line-height: 1.25;
  letter-spacing: -0.022em; font-weight: 600; margin: 0 0 0.9rem;
  text-wrap: balance;
}
.section-head p { margin: 0; color: var(--ink-2); max-width: 36rem; }

h3 { font-size: 1rem; font-weight: 600; letter-spacing: -0.008em; margin: 0 0 0.45rem; }
p { margin: 0 0 1rem; }
.prose { max-width: 40rem; color: var(--ink-2); }
.prose p:last-child { margin-bottom: 0; }

/* ---------------- deliverables ---------------- */

ol.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; display: grid; gap: 0; }
ol.steps > li {
  counter-increment: s; display: grid; grid-template-columns: 3.25rem 1fr;
  gap: 1.5rem; padding: 1.5rem 0; border-top: 1px solid var(--rule);
}
ol.steps > li:last-child { border-bottom: 1px solid var(--rule); }
ol.steps > li::before {
  content: counter(s, decimal-leading-zero);
  font-family: var(--mono); font-size: 0.78rem; color: var(--ink-4);
  padding-top: 0.22rem; letter-spacing: 0.02em;
}
ol.steps p { margin: 0; color: var(--ink-2); font-size: 0.96rem; max-width: 42rem; }
@media (max-width: 560px) {
  ol.steps > li { grid-template-columns: 2rem 1fr; gap: 0.9rem; }
}

/* ---------------- two column ---------------- */

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; gap: 2.5rem; } }

/* ---------------- sources table-ish list ---------------- */

.source-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.source-list li {
  display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: baseline;
  padding: 0.95rem 0; border-bottom: 1px solid var(--rule); font-size: 0.94rem;
}
.source-list .name { color: var(--ink); }
.source-list .cadence {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-4); white-space: nowrap;
}

/* ---------------- pricing ---------------- */

.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; align-items: stretch; }
@media (max-width: 900px) { .tiers { grid-template-columns: 1fr; } }

.tier {
  display: flex; flex-direction: column;
  border: 1px solid var(--rule-2); border-radius: 6px; background: #fff;
  padding: 1.6rem 1.5rem;
}
.tier.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.tier .tier-name {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-3); margin: 0 0 1rem;
}
.tier.featured .tier-name { color: var(--accent); }
.price { font-size: 1.9rem; font-weight: 620; letter-spacing: -0.03em; line-height: 1; margin: 0 0 0.35rem; }
.price small { font-size: 0.82rem; font-weight: 450; letter-spacing: 0; color: var(--ink-3); }
.tier .note { font-size: 0.85rem; color: var(--ink-3); margin: 0 0 1.3rem; line-height: 1.5; }
.tier ul { list-style: none; margin: 0 0 1.5rem; padding: 0; font-size: 0.92rem; color: var(--ink-2); }
.tier ul li { position: relative; padding-left: 1.15rem; margin-bottom: 0.55rem; line-height: 1.5; }
.tier ul li::before {
  content: ""; position: absolute; left: 0; top: 0.6em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--accent);
}
.tier .btn { margin-top: auto; width: 100%; }

.pricing-foot { margin-top: 1.75rem; font-size: 0.86rem; color: var(--ink-3); max-width: 44rem; }

/* ---------------- faq ---------------- */

details { border-top: 1px solid var(--rule); }
details:last-of-type { border-bottom: 1px solid var(--rule); }
summary {
  list-style: none; cursor: pointer; padding: 1.15rem 0;
  display: flex; align-items: baseline; justify-content: space-between; gap: 1.5rem;
  font-weight: 550; font-size: 0.98rem; color: var(--ink);
}
summary::-webkit-details-marker { display: none; }
summary .plus {
  font-family: var(--mono); font-size: 0.95rem; color: var(--ink-4); flex: none;
  transition: transform 150ms ease;
}
details[open] summary .plus { transform: rotate(45deg); color: var(--accent); }
details .answer { padding: 0 0 1.3rem; color: var(--ink-2); font-size: 0.95rem; max-width: 42rem; }
details .answer p:last-child { margin-bottom: 0; }

/* ---------------- callout ---------------- */

.callout {
  border-left: 2px solid var(--accent); background: var(--accent-wash);
  padding: 1rem 1.25rem; font-size: 0.9rem; color: var(--ink-2);
  max-width: 42rem; border-radius: 0 4px 4px 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout strong { color: var(--ink); }

/* ---------------- contact ---------------- */

.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 4rem; align-items: start; }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; gap: 2.25rem; } }

form.contact { display: grid; gap: 1rem; }
form.contact .row { display: grid; gap: 0.35rem; }
form.contact .row.two { grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 480px) { form.contact .row.two { grid-template-columns: 1fr; } }
form.contact label { font-size: 0.8rem; font-weight: 550; letter-spacing: 0.01em; color: var(--ink-2); }
form.contact input, form.contact textarea, form.contact select {
  width: 100%; padding: 0.6rem 0.7rem; font: inherit; font-size: 0.94rem;
  color: var(--ink); background: #fcfcfd;
  border: 1px solid var(--rule-2); border-radius: 4px;
}
form.contact input:focus, form.contact textarea:focus, form.contact select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(20,69,58,0.1);
}
form.contact textarea { min-height: 6.5rem; resize: vertical; }
form.contact button {
  justify-self: start; font: inherit; font-size: 0.93rem; font-weight: 550;
  color: #fff; background: var(--accent); border: 1px solid var(--accent);
  padding: 0.72rem 1.4rem; border-radius: 4px; cursor: pointer;
}
form.contact button:hover { background: var(--accent-ink); }
form.contact button:disabled { opacity: 0.55; cursor: default; }
.form-status { margin: 0; font-size: 0.88rem; min-height: 1.25rem; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: var(--danger); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------------- footer ---------------- */

.site-footer { border-top: 1px solid var(--rule); padding-block: 3rem 3.5rem; font-size: 0.86rem; color: var(--ink-3); }
.site-footer .cols { display: grid; grid-template-columns: 2.2fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem; }
@media (max-width: 720px) { .site-footer .cols { grid-template-columns: 1fr; gap: 1.75rem; } }
.site-footer .brand { font-weight: 620; color: var(--ink); font-size: 0.95rem; margin-bottom: 0.5rem; }
.site-footer .footer-note { max-width: 24rem; line-height: 1.55; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer a { color: var(--ink-2); border-bottom: 0; }
.site-footer a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }
.site-footer .col-title {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-4); margin-bottom: 0.85rem;
}
.site-footer .legal {
  border-top: 1px solid var(--rule); padding-top: 1.5rem; line-height: 1.6;
  max-width: 52rem; font-size: 0.82rem; color: var(--ink-3);
}

/* ---------------- document / sample page ---------------- */

.doc-page { padding-block: 3rem 5rem; }
.doc-head { border-bottom: 1px solid var(--ink); padding-bottom: 1.35rem; margin-bottom: 2.25rem; }
.doc-head h1 { font-size: clamp(1.5rem, 2.8vw, 2rem); letter-spacing: -0.025em; margin-bottom: 0.9rem; }
.doc-meta { font-size: 0.83rem; color: var(--ink-3); line-height: 1.75; }
.doc-meta strong { color: var(--ink-2); font-weight: 600; }
.doc-note {
  border: 1px solid var(--rule); background: var(--bg-alt); border-radius: 4px;
  padding: 0.9rem 1.15rem; font-size: 0.86rem; color: var(--ink-2); margin-bottom: 2.5rem;
}
.doc h2 {
  font-size: 1.22rem; margin: 2.75rem 0 1rem; padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--rule); letter-spacing: -0.015em;
}
.doc h3 { font-size: 1.02rem; margin: 2rem 0 0.6rem; }
.doc p, .doc li { font-size: 0.96rem; color: var(--ink-2); max-width: 46rem; }
.doc li { margin-bottom: 0.6rem; }
.doc strong { color: var(--ink); }
.doc .item-meta { font-size: 0.9rem; color: var(--ink-3); }
.doc .item-meta strong { color: var(--ink-2); }
.doc .source { font-size: 0.88rem; margin-top: 0.6rem; }
.doc ol { padding-left: 1.25rem; }
.doc ul { padding-left: 1.25rem; }

/* ---------------- utilities ---------------- */

.rule { height: 1px; background: var(--rule); border: 0; margin: 0; }
.muted { color: var(--ink-3); }
.small { font-size: 0.85rem; }
.nowrap { white-space: nowrap; }