:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --ink: #1b2430;
  --muted: #5a6675;
  --line: #e1e7ec;
  --accent: #2f6fb0;
  --accent-ink: #255a8f;
  --maxw: 44rem;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

:root[data-theme="dark"] {
  --bg: #121820;
  --surface: #1a222c;
  --ink: #e7ecf1;
  --muted: #9aa7b4;
  --line: #2a333f;
  --accent: #5aa0da;
  --accent-ink: #7cb7e6;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.skip {
  position: absolute;
  left: -999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--surface);
  color: var(--ink);
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.375rem;
}

a {
  color: var(--accent-ink);
  text-underline-offset: 0.15em;
}
a:hover { color: var(--accent); }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.site-header {
  padding-block: clamp(3rem, 8vw, 5.5rem) clamp(2rem, 6vw, 3.5rem);
  border-bottom: 1px solid var(--line);
}
.avatar {
  width: 9.5rem;
  height: 9.5rem;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin-bottom: 1.25rem;
  border: 1px solid var(--line);
}
.eyebrow {
  margin: 0 0 1rem;
  font-family: var(--sans);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.site-header h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 2.9rem);
  max-width: 20ch;
}
.lede {
  margin: 1.25rem 0 0;
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 48ch;
}

.top-nav {
  margin-top: 2rem;
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}
.top-nav a {
  text-decoration: none;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid transparent;
}
.top-nav a:hover { border-bottom-color: currentColor; }
.theme-toggle {
  margin-left: auto;
  font-family: var(--sans);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  cursor: pointer;
}
.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--accent);
}

main { padding-block: clamp(2.5rem, 7vw, 4.5rem); }

section + section { margin-top: clamp(3rem, 8vw, 5rem); }

h2 {
  font-size: clamp(1.4rem, 3.5vw, 1.9rem);
  margin: 0 0 0.5rem;
}
.section-note {
  margin: 0 0 2rem;
  color: var(--muted);
}

.cases {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}
.case {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.5rem 1.5rem 1.35rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.case:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.case h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
.case h3 a { text-decoration: none; }
.case p { margin: 0; color: var(--muted); }
.case .tag {
  margin-top: 0.85rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-ink);
}

.button {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--accent);
  border-radius: 0.5rem;
  color: var(--accent-ink);
}
.button:hover {
  background: var(--accent);
  color: var(--bg);
}

.placeholder {
  color: var(--muted);
  font-style: italic;
}

.about-figure {
  margin: 1.5rem 0 0;
}
.about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
}
.about-figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (min-width: 40rem) {
  .about-figure {
    float: right;
    width: 15rem;
    margin: 0.25rem 0 1rem 1.75rem;
  }
}

.site-footer {
  margin-top: clamp(3rem, 9vw, 6rem);
  border-top: 1px solid var(--line);
  padding-block: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.social {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0 0 0.75rem;
  padding: 0;
}
.social a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.social a:hover {
  color: var(--ink);
  border-bottom-color: currentColor;
}
.header-social {
  margin-top: 1rem;
  font-size: 0.95rem;
}

@media (min-width: 40rem) {
  .cases {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}