/* Which AI Sent: marketing + legal pages */
:root {
  --paper: #f4f1ea;
  --paper-2: #ece8de;
  --ink: #15181d;
  --ink-2: #2a2f36;
  --muted: #5d626a;
  --line: #d9d4c7;
  --night: #0f151d;
  --night-2: #18212c;
  --night-line: #2a3542;
  --night-muted: #9aa4b0;
  --accent: #d6541f;
  --accent-ink: #b8461a;
  --confirmed: #1d7048;
  --declared: #2b55c2;
  --assisted: #8c5a06;
  --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, SFMono-Regular, Menlo, monospace;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--sans); }
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-ink); }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(15, 21, 29, .96); color: #fff; border-bottom: 1px solid var(--night-line); }
.nav.light { background: rgba(244, 241, 234, .96); color: var(--ink); border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: inline-flex; align-items: baseline; gap: 1px; font: 500 17px/1 var(--mono); letter-spacing: -.02em; text-decoration: none; color: inherit; white-space: nowrap; }
.brand b { font-weight: 500; color: var(--accent); }
.brand:hover { color: inherit; }
.nav-links { display: flex; gap: 24px; margin-left: auto; align-items: center; font-size: 15px; }
.nav-links a { text-decoration: none; opacity: .82; }
.nav-links a:hover { opacity: 1; color: inherit; }
.nav-links .btn { opacity: 1; }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid currentColor; color: inherit; border-radius: 6px; padding: 6px 10px; font: 500 14px var(--sans); cursor: pointer; }
@media (max-width: 820px) {
  .menu-btn { display: block; }
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--night); border-bottom: 1px solid var(--night-line); padding: 8px 16px 16px; }
  .nav.light .nav-links { background: var(--paper); border-bottom-color: var(--line); }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--night-line); }
  .nav.light .nav-links a { border-bottom-color: var(--line); }
  .nav-links .btn { margin-top: 12px; text-align: center; border-bottom: 0; }
  .nav.open .nav-links { display: flex; }
}

/* ---------- buttons ---------- */
.btn { display: inline-block; font: 500 15px/1 var(--sans); padding: 13px 20px; border-radius: 6px; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); color: #fff; }
.btn-ghost { border-color: currentColor; color: inherit; background: transparent; }
.btn-ghost:hover { background: rgba(255,255,255,.08); color: inherit; }
.nav.light .btn-ghost:hover, .light .btn-ghost:hover { background: rgba(0,0,0,.05); }
.btn-sm { padding: 9px 14px; font-size: 14px; }

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--serif); font-weight: 500; letter-spacing: -.015em; margin: 0; }
h1 { font-size: clamp(40px, 6.4vw, 78px); line-height: 1.02; }
h2 { font-size: clamp(30px, 4vw, 46px); line-height: 1.08; }
h3 { font-size: 23px; line-height: 1.25; }
.eyebrow { font: 500 12px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.lede { font-size: clamp(18px, 2vw, 21px); line-height: 1.55; max-width: 38em; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }
em.ink { font-style: italic; color: var(--accent); }

/* ---------- hero ---------- */
.hero { background: var(--night); color: #f3f1ec; padding: 88px 0 0; overflow: hidden; }
.hero .eyebrow { color: var(--night-muted); }
.hero h1 { margin: 18px 0 24px; max-width: 12em; }
.hero .lede { color: #c9cfd6; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 36px 0 18px; }
.hero-note { font-size: 14px; color: var(--night-muted); }
.hero-visual { margin-top: 64px; position: relative; }
.hero-visual::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 56px; background: linear-gradient(to bottom, rgba(15,21,29,0), var(--night)); pointer-events: none; }

/* sample report card */
.report { background: var(--paper); color: var(--ink); border-radius: 10px 10px 0 0; padding: 32px 36px 40px; max-width: 920px; margin: 0 auto; border: 1px solid #2a3542; border-bottom: 0; }
@media (max-width: 600px) { .report { padding: 22px 18px 28px; } }
.report-head { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: baseline; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.report-head strong { font: 500 20px var(--serif); }
.report-tag { font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--line); padding: 3px 7px; border-radius: 4px; }
.figures { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 26px 0; border-bottom: 1px solid var(--line); }
@media (max-width: 700px) { .figures { grid-template-columns: 1fr; gap: 16px; } }
.figure .v { font: 500 clamp(30px, 4vw, 40px)/1 var(--mono); letter-spacing: -.03em; }
.figure .k { font-size: 14px; color: var(--muted); margin-top: 8px; }
.figure .k b { color: var(--ink); font-weight: 500; }
.split { display: grid; grid-template-columns: 1.15fr 1fr; gap: 36px; padding-top: 22px; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; gap: 24px; } }
.tiers { display: grid; gap: 10px; }
.tier { display: grid; grid-template-columns: 10px 1fr auto; gap: 12px; align-items: baseline; font-size: 15px; }
.tier i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; transform: translateY(1px); }
.tier .amt { font-family: var(--mono); }
.tier small { display: block; color: var(--muted); font-size: 13px; }
table.plain { width: 100%; border-collapse: collapse; font-size: 15px; }
table.plain th { text-align: left; font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding: 0 0 8px; border-bottom: 1px solid var(--line); }
table.plain td { padding: 9px 0; border-bottom: 1px solid var(--line); }
table.plain .n { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
table.plain th.n { text-align: right; }

/* ---------- sections ---------- */
section.block { padding: 112px 0; border-bottom: 1px solid var(--line); }
@media (max-width: 700px) { section.block { padding: 72px 0; } }
.block-head { display: grid; grid-template-columns: 220px 1fr; gap: 32px; margin-bottom: 56px; }
@media (max-width: 820px) { .block-head { grid-template-columns: 1fr; gap: 14px; margin-bottom: 36px; } }
.block-head h2 { max-width: 16em; }
.block-head p { margin: 18px 0 0; max-width: 36em; color: var(--ink-2); }

.cols-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--ink); }
.cols-3 > div { padding: 28px 28px 8px 0; }
.cols-3 > div + div { padding-left: 28px; border-left: 1px solid var(--line); }
@media (max-width: 820px) {
  .cols-3 { grid-template-columns: 1fr; }
  .cols-3 > div, .cols-3 > div + div { padding: 24px 0; border-left: 0; border-bottom: 1px solid var(--line); }
}
.cols-3 h3 { margin: 12px 0 10px; }
.cols-3 p { margin: 0 0 16px; color: var(--ink-2); font-size: 16px; }
.num { font: 500 13px var(--mono); color: var(--accent); }

.quote { font: italic 400 clamp(22px, 2.6vw, 28px)/1.4 var(--serif); max-width: 30em; margin: 0; padding-left: 20px; border-left: 2px solid var(--accent); }

/* confidence table */
.conf-table { width: 100%; border-collapse: collapse; border-top: 1px solid var(--ink); }
.conf-table td { padding: 22px 16px 22px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.conf-table td:first-child { width: 210px; }
.conf-table .label { font: 500 13px var(--mono); letter-spacing: .06em; text-transform: uppercase; display: inline-flex; gap: 10px; align-items: center; }
.conf-table .label i { width: 10px; height: 10px; border-radius: 2px; }
.conf-table p { margin: 0; color: var(--ink-2); }
.conf-table .eg { font-size: 14px; color: var(--muted); margin-top: 6px; }
@media (max-width: 700px) {
  .conf-table td { display: block; padding: 6px 0; border: 0; }
  .conf-table tr { display: block; padding: 16px 0; border-bottom: 1px solid var(--line); }
  .conf-table td:first-child { width: auto; }
}

.list-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
@media (max-width: 760px) { .list-2 { grid-template-columns: 1fr; } }
.list-2 div { padding: 20px 0; border-top: 1px solid var(--line); }
.list-2 h3 { font-size: 20px; margin-bottom: 6px; }
.list-2 p { margin: 0; color: var(--ink-2); font-size: 16px; }

.dark { background: var(--night); color: #eeece6; border-bottom-color: var(--night-line) !important; }
.dark .eyebrow, .dark .muted { color: var(--night-muted); }
.dark .block-head p, .dark .cols-3 p { color: #c3c9d0; }
.dark .cols-3 { border-top-color: #eeece6; }
.dark .cols-3 > div + div { border-left-color: var(--night-line); }
@media (max-width: 820px) { .dark .cols-3 > div, .dark .cols-3 > div + div { border-bottom-color: var(--night-line); } }

/* faq */
.faq { border-top: 1px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 22px 40px 22px 0; font: 500 20px/1.35 var(--serif); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 20px; font: 400 24px var(--mono); color: var(--muted); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 22px; max-width: 44em; color: var(--ink-2); }

/* contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; gap: 36px; } }
form.form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 16px; }
@media (max-width: 560px) { form.form { grid-template-columns: 1fr; } }
form.form .full { grid-column: 1 / -1; }
form.form label { display: grid; gap: 6px; font-size: 14px; color: var(--ink-2); }
form.form input, form.form select, form.form textarea { font: 400 16px var(--sans); color: var(--ink); background: #fbfaf6; border: 1px solid var(--line); border-radius: 6px; padding: 12px 12px; width: 100%; }
form.form input:focus, form.form select:focus, form.form textarea:focus { outline: none; border-color: var(--ink); }
form.form textarea { min-height: 120px; resize: vertical; }
form.form .hp { position: absolute; left: -5000px; }
.form-msg { font-size: 15px; }
.form-msg.ok { color: var(--confirmed); }
.form-msg.err { color: var(--accent-ink); }

/* ---------- legal / prose pages ---------- */
.page-head { padding: 72px 0 40px; border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(38px, 5vw, 56px); margin-top: 14px; }
.page-head p { margin: 16px 0 0; color: var(--muted); }
.prose { max-width: 720px; padding: 48px 0 96px; }
.prose h2 { font-size: 28px; margin: 48px 0 12px; }
.prose h3 { font-size: 20px; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul { padding-left: 20px; }
.prose li { margin: 6px 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 16px 0; }
.prose th, .prose td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font: 500 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.prose code { font: 14px var(--mono); background: var(--paper-2); padding: 1px 5px; border-radius: 3px; }
.copybox { background: #fbfaf6; border: 1px solid var(--line); border-radius: 8px; padding: 18px 20px; font-size: 15px; position: relative; }
.copybox p { margin: 0 0 10px; }
.copybox p:last-of-type { margin-bottom: 0; }
.copybox button { position: absolute; top: 12px; right: 12px; }
.note { border-left: 2px solid var(--accent); padding: 4px 0 4px 16px; margin: 24px 0; }

/* ---------- footer ---------- */
footer.foot { background: var(--night); color: var(--night-muted); padding: 56px 0 40px; font-size: 15px; }
.foot-top { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; padding-bottom: 36px; border-bottom: 1px solid var(--night-line); }
.foot .brand { color: #f3f1ec; font-size: 18px; }
.foot-links { display: flex; gap: 48px; flex-wrap: wrap; }
.foot-links div { display: grid; gap: 8px; align-content: start; }
.foot-links span { font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: #6f7a87; margin-bottom: 4px; }
.foot-links a { text-decoration: none; color: #c3c9d0; }
.foot-links a:hover { color: #fff; }
.foot-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 24px; font-size: 13px; }

/* ---------- small pages (login, 404) ---------- */
.center-page { min-height: calc(100vh - 64px); display: grid; place-items: center; padding: 48px 16px; }
.card { width: 100%; max-width: 420px; }
.card h1 { font-size: 40px; margin: 12px 0 12px; }
.card form { display: grid; gap: 12px; margin-top: 28px; }
.card input { font: 400 16px var(--mono); padding: 13px 12px; border: 1px solid var(--line); border-radius: 6px; background: #fbfaf6; color: var(--ink); width: 100%; }
.card input:focus { outline: none; border-color: var(--ink); }