/* PathMDAi — shared visual system for the three director-brief variants */
:root {
  --specimen:    #f6f3ec;
  --specimen-2:  #ece7da;
  --paper:       #fbf9f3;
  --ink:         #14110c;
  --ink-2:       #2c2620;
  --ink-3:       #5a544b;
  --ink-4:       #8a8276;
  --rule:        #d8d2c2;
  --rule-soft:   #e6e0d0;
  --eosin:       #6a1d22;
  --eosin-soft:  #c25e6a;
  --reagent:     #5a4cd8;
  --signal:      #0d6b4a;
  --warn:        #a55a14;
  --max:         1280px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--specimen);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 16px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 {
  font-family: "Newsreader", Georgia, serif;
  font-weight: 400; letter-spacing: -0.01em;
  margin: 0; text-wrap: balance;
}
p { margin: 0; text-wrap: pretty; }
.mono { font-family: "IBM Plex Mono", ui-monospace, monospace; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 40px; }
.eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-3);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--ink-3); display: inline-block; }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--specimen) 82%, transparent);
  border-bottom: 1px solid var(--rule-soft); }
.nav-inner { max-width: var(--max); margin: 0 auto; padding: 18px 40px;
  display: flex; align-items: center; gap: 40px; }
.brand { display: inline-flex; align-items: center; gap: 12px;
  font-family: "Newsreader", serif; font-size: 20px; letter-spacing: -0.01em; }
.brand-mark { width: 28px; height: 28px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--eosin-soft) 0%, var(--eosin) 60%, #2a0a0c 100%);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.15); }
.brand-name b { font-weight: 500; }
.brand-name span { color: var(--ink-3); font-style: italic; font-weight: 300; }
.nav-links { display: flex; align-items: center; gap: 28px; margin-left: auto; font-size: 14px; }
.nav-links a { color: var(--ink-2); transition: color .2s; }
.nav-links a:hover { color: var(--eosin); }
.nav-cta { padding: 10px 16px; border: 1px solid var(--ink); border-radius: 999px; font-size: 13px;
  transition: background .2s, color .2s; }
.nav-cta:hover { background: var(--ink); color: var(--specimen); }

/* variant tag in nav */
.variant-tag { font-family: "IBM Plex Mono", monospace; font-size: 10px;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-4);
  padding: 4px 10px; border: 1px solid var(--rule); border-radius: 4px; }

/* hero common */
.hero { padding: 56px 0 96px; position: relative; }
.hero-meta { display: flex; gap: 32px; flex-wrap: wrap;
  font-family: "IBM Plex Mono", monospace; font-size: 11px; color: var(--ink-3);
  letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 56px; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta .dot { width: 6px; height: 6px; border-radius: 50%;
  background: var(--signal); box-shadow: 0 0 0 3px color-mix(in oklab, var(--signal) 20%, transparent); }
.hero h1 { font-size: clamp(44px, 6.2vw, 84px); line-height: 0.98;
  letter-spacing: -0.025em; font-weight: 300; max-width: 16ch; margin-bottom: 32px; }
.hero h1 em { font-style: italic; color: var(--eosin); font-weight: 300; }
.hero-sub { max-width: 56ch; font-size: 19px; color: var(--ink-2);
  line-height: 1.5; margin-bottom: 40px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* btn */
.btn { display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px; font-size: 14px; font-weight: 500;
  transition: transform .15s ease, background .2s, color .2s, border-color .2s;
  cursor: pointer; border: 1px solid transparent; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--specimen); }
.btn-primary:hover { background: var(--eosin); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--specimen); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* section head */
section { padding: 120px 0; }
.section-head { display: grid; grid-template-columns: 280px 1fr; gap: 48px;
  margin-bottom: 64px; align-items: end; }
.section-head .lhs { display: flex; flex-direction: column; gap: 16px; }
.section-head h2 { font-size: clamp(34px, 4.2vw, 56px); line-height: 1.02;
  letter-spacing: -0.02em; font-weight: 300; max-width: 18ch; }
.section-head h2 em { color: var(--eosin); font-style: italic; }
.section-head .deck { font-size: 17px; color: var(--ink-2); max-width: 52ch; line-height: 1.5; }

/* stat band */
.stat-band { background: var(--ink); color: var(--specimen); padding: 80px 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat { padding: 8px 28px; border-left: 1px solid color-mix(in oklab, var(--specimen) 18%, transparent); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat-num { font-family: "Newsreader", serif; font-size: 64px; line-height: 1;
  font-weight: 300; letter-spacing: -0.03em; }
.stat-num sup { font-size: 22px; color: var(--eosin-soft); margin-left: 4px; vertical-align: super; }
.stat-label { margin-top: 16px; font-size: 13px;
  color: color-mix(in oklab, var(--specimen) 70%, transparent); line-height: 1.45; max-width: 28ch; }

/* invest card */
.invest { background: var(--specimen); padding-bottom: 0; }
.invest-card { background: var(--ink); color: var(--specimen); border-radius: 8px;
  padding: 64px 56px 56px; display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px;
  align-items: end; position: relative; overflow: hidden; }
.invest-card::before { content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 90% 10%, color-mix(in oklab, var(--eosin) 35%, transparent) 0%, transparent 60%);
  pointer-events: none; }
.invest-card > * { position: relative; }
.invest-card .eyebrow { color: color-mix(in oklab, var(--specimen) 60%, transparent); }
.invest-card .eyebrow::before { background: color-mix(in oklab, var(--specimen) 60%, transparent); }
.invest-card h2 { font-size: clamp(36px, 4.4vw, 60px); line-height: 1.02;
  font-weight: 300; color: var(--specimen); margin: 16px 0 24px; max-width: 14ch; }
.invest-card h2 em { color: var(--eosin-soft); font-style: italic; }
.invest-card p { font-size: 16px; color: color-mix(in oklab, var(--specimen) 80%, transparent);
  max-width: 48ch; line-height: 1.55; }
.invest-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 36px;
  border-top: 1px solid color-mix(in oklab, var(--specimen) 18%, transparent); padding-top: 24px; }
.invest-stats div .k { font-family: "IBM Plex Mono", monospace; font-size: 10px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: color-mix(in oklab, var(--specimen) 55%, transparent); display: block; margin-bottom: 6px; }
.invest-stats div .v { font-family: "Newsreader", serif; font-size: 22px; color: var(--specimen); line-height: 1.2; }
.invest-actions { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }
.invest-actions .btn-primary { background: var(--specimen); color: var(--ink); }
.invest-actions .btn-primary:hover { background: var(--eosin-soft); color: var(--ink); }
.invest-actions .btn-ghost { border-color: color-mix(in oklab, var(--specimen) 50%, transparent); color: var(--specimen); }
.invest-actions .btn-ghost:hover { background: var(--specimen); color: var(--ink); }

/* footer */
footer { background: var(--specimen); padding: 96px 0 48px;
  border-top: 1px solid var(--rule); margin-top: 120px; }
.foot-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 56px; border-bottom: 1px solid var(--rule); }
.foot-claim { font-family: "Newsreader", serif; font-size: 28px; line-height: 1.15;
  font-weight: 300; max-width: 22ch; }
.foot-claim em { color: var(--eosin); font-style: italic; }
.foot-col h4 { font-family: "IBM Plex Mono", monospace; font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3);
  margin-bottom: 16px; font-weight: 500; }
.foot-col a, .foot-col span { display: block; font-size: 14px; color: var(--ink-2); padding: 4px 0; }
.foot-col a:hover { color: var(--eosin); }
.foot-bottom { margin-top: 32px; display: flex; justify-content: space-between; align-items: center;
  font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: 0.12em;
  color: var(--ink-4); text-transform: uppercase; }

/* responsive */
@media (max-width: 960px) {
  .container { padding: 0 24px; }
  .nav-inner { padding: 16px 24px; gap: 16px; }
  .nav-links { gap: 16px; font-size: 13px; }
  .stat-grid, .invest-card, .section-head, .foot-top { grid-template-columns: 1fr; }
  .stat { border-left: 0; border-top: 1px solid color-mix(in oklab, var(--specimen) 18%, transparent);
    padding: 24px 0; }
  .stat:first-child { border-top: 0; padding-top: 0; }
  .invest-card { padding: 36px 24px; gap: 32px; }
  section { padding: 72px 0; }
}