@font-face {
  font-family: "Zen Serif";
  src: url("../fonts/ZEN-SERIF-TTF-Regular.ttf") format("truetype");
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/fonnts.com-Suisse_Intl_Bold.ttf") format("truetype");
  font-display: swap;
  font-weight: 700;
}

:root {
  --paper: #f4f0e8;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #fffdf9;
  --ink: #191714;
  --muted: #655d56;
  --line: rgba(25, 23, 20, 0.12);
  --accent: #143a52;
  --accent-soft: rgba(20, 58, 82, 0.1);
  --shadow: 0 18px 45px rgba(24, 20, 16, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.8), transparent 28%),
    linear-gradient(180deg, #f8f5ef 0%, var(--paper) 100%);
  font-family: "Georgia", "Times New Roman", serif;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3,
ul,
dl {
  margin: 0;
}

.page-shell,
.blog-shell,
.lab-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 10px 0 28px;
}

.site-mark {
  font-family: "Suisse Intl", "Arial", sans-serif;
  font-size: 0.92rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  padding-bottom: 0.18rem;
  border-bottom: 1px solid transparent;
}

.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-color: var(--ink);
}

.section-label,
.blog-kicker,
.card-tag {
  font-family: "Suisse Intl", "Arial", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.74rem;
}

@media (max-width: 720px) {
  .page-shell,
  .blog-shell,
  .lab-shell {
    width: min(100% - 28px, 1120px);
    padding-top: 18px;
    padding-bottom: 40px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 22px;
  }
}