:root {
  --bg: #ffffff;
  --surface: #fbf9f7;
  --ink: #1f1a17;
  --muted: #5f5750;
  --line: #e7e0d8;
  --accent: #7a2433;
  --accent-soft: #f3e6e8;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-family: var(--serif); font-size: 22px; font-weight: 600; color: var(--ink); text-decoration: none; letter-spacing: .5px; }
.nav ul { list-style: none; display: flex; gap: 28px; margin: 0; padding: 0; }
.nav ul a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav ul a:hover, .nav ul a[aria-current="page"] { color: var(--ink); }
.nav ul a[aria-current="page"] { border-bottom: 2px solid var(--accent); padding-bottom: 4px; }

/* Hero */
.hero { padding: 88px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: center; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin: 0 0 16px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.15; margin: 0; }
h1 { font-size: clamp(42px, 6vw, 64px); letter-spacing: -.01em; }
.lede { font-size: 20px; color: var(--muted); margin: 20px 0 32px; max-width: 34ch; }
.photo { position: relative; }
.photo img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: 20px; }
.photo::after {
  content: ""; position: absolute; inset: 16px -16px -16px 16px;
  border: 1.5px solid var(--accent); border-radius: 20px; z-index: -1; opacity: .5;
}
.links { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 999px; font-size: 15px; font-weight: 500;
  text-decoration: none; border: 1px solid var(--line); color: var(--ink); background: var(--surface);
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.btn svg { width: 16px; height: 16px; fill: currentColor; }

/* Sections */
section { padding: 72px 0; border-top: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: 1fr 2.2fr; gap: 48px; }
h2 { font-size: 34px; }
.prose p { margin: 0 0 1.1em; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { font-weight: 600; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 28px; }
.card h3 { font-size: 21px; margin-bottom: 10px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card .num { font-family: var(--serif); color: var(--accent); font-size: 15px; margin-bottom: 14px; display: block; }

.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.timeline li:last-child { border-bottom: 0; }
.timeline .when { color: var(--muted); font-size: 15px; font-variant-numeric: tabular-nums; padding-top: 2px; }
.timeline h3 { font-size: 20px; }
.timeline p { margin: 6px 0 0; color: var(--muted); font-size: 16px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tag { background: var(--accent-soft); color: var(--accent); font-size: 13px; font-weight: 500; padding: 4px 12px; border-radius: 999px; }

/* Research page */
.page-head { padding: 72px 0 40px; }
.page-head .lede { max-width: 60ch; }
.research { padding: 48px 0; border-top: 1px solid var(--line); }
.research .wrap { display: grid; grid-template-columns: 1fr 2.2fr; gap: 48px; }
.research h2 { font-size: 28px; }
.research .collab { color: var(--muted); font-size: 15px; margin-top: 10px; }
.research ul { margin: 16px 0 0; padding-left: 20px; }
.research li { margin-bottom: 6px; }

footer { border-top: 1px solid var(--line); padding: 40px 0 56px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
footer em { font-style: italic; }

@media (max-width: 860px) {
  .hero { padding: 48px 0; }
  .hero .wrap, .section-head, .research .wrap { grid-template-columns: 1fr; gap: 32px; }
  .photo { max-width: 360px; order: -1; }
  .photo::after { inset: 10px -8px -10px 10px; }
  .cards, .cards.two { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 1fr; gap: 4px; }
  .nav ul { gap: 18px; }
  section { padding: 56px 0; }
}
@media (max-width: 420px) {
  .wrap { padding: 0 16px; }
  .brand { font-size: 20px; }
  .nav ul { gap: 14px; }
  .nav ul a { font-size: 14px; }
}

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 48px; }
.stats div { border-left: 2px solid var(--accent); padding: 4px 0 4px 16px; }
.stats strong { display: block; font-family: var(--serif); font-weight: 500; font-size: 34px; line-height: 1.1; }
.stats span { color: var(--muted); font-size: 14px; line-height: 1.4; display: block; margin-top: 6px; }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); } }

.feature { display: block; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 16px; padding: 32px; transition: border-color .15s, transform .15s; }
.feature:hover { border-color: var(--accent); transform: translateY(-2px); }
.feature .eyebrow { margin-bottom: 10px; font-size: 12px; }
.feature h3 { font-size: 26px; margin-bottom: 12px; }
.feature p { margin: 0; color: var(--muted); }
.feature-cta { display: inline-block; margin-top: 20px; color: var(--accent); font-weight: 600; font-size: 15px; }

.contact-note { color: var(--muted); margin: 16px 0 0; max-width: 32ch; }
.contact-form { display: grid; gap: 16px; }
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: grid; gap: 6px; font-size: 14px; font-weight: 500; }
.contact-form .opt { color: var(--muted); font-weight: 400; }
.contact-form input, .contact-form textarea {
  font: inherit; font-size: 16px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; width: 100%;
}
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.contact-form textarea { resize: vertical; }
.contact-form button { justify-self: start; cursor: pointer; font: inherit; font-size: 15px; font-weight: 500; }
.form-sent { background: var(--accent-soft); color: var(--accent); padding: 20px 24px; border-radius: 12px; margin: 0; font-weight: 500; }
.hp { position: absolute; left: -9999px; }
@media (max-width: 560px) { .contact-form .row { grid-template-columns: 1fr; } }
.builds { margin-top: 20px; }
.link-card { text-decoration: none; color: var(--ink); display: flex; flex-direction: column; transition: border-color .15s, transform .15s; }
.link-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.link-card .feature-cta { margin-top: auto; padding-top: 16px; }
section { scroll-margin-top: 64px; }