:root {
  --bg: #f2f1ec;
  --bg-raised: #fcfbf9;
  --fg: #23272e;
  --fg-bold: #0e1116;
  --fg-light: #545a63;
  --fg-muted: rgba(35, 39, 46, 0.55);
  --accent: #1b2fbf;
  --accent-hover: #16249c;
  --on-accent: #ffffff;
  --signal: #9a5600;
  --border: rgba(35, 39, 46, 0.14);
  --border-strong: rgba(35, 39, 46, 0.28);
  --shadow: 0 0 0 1px var(--border);
  --font-display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Newsreader", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --max: 1080px;
  --pad: clamp(1.25rem, 4vw, 2rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--accent);
  color: var(--on-accent);
  padding: 0.6rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  z-index: 10;
}

.skip:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner,
.wrap,
.site-footer .wrap {
  width: min(var(--max), calc(100% - var(--pad) * 2));
  margin-inline: auto;
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 1rem;
  min-height: 4.25rem;
}

.mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  color: var(--fg-bold);
  text-decoration: none;
}

.nav {
  display: flex;
  justify-content: flex-end;
  gap: 1.5rem;
}

.nav a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-light);
  text-decoration: none;
}

.nav a[aria-current="page"] {
  color: var(--fg-bold);
}

.nav a:hover {
  color: var(--accent);
}

main {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) 4rem;
}

.hero {
  display: grid;
  gap: 1.25rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--fg-bold);
}

h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 5.4rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  color: var(--fg-bold);
}

.lede {
  max-width: 42rem;
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  line-height: 1.45;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-top: 0.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.7rem 1.15rem;
  background: var(--accent);
  color: var(--on-accent);
  border: 1px solid var(--accent);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
}

.button:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--on-accent);
}

.button.ghost {
  background: transparent;
  color: var(--fg-bold);
  border-color: var(--border-strong);
}

.button.ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: transparent;
}

.text-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fg-bold);
}

.text-link:hover {
  color: var(--accent);
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--fg-light);
}

.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.section-nav a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fg-light);
}

.section-nav a:hover,
.section-nav a:focus {
  color: var(--accent);
}

section {
  padding-top: 3rem;
  scroll-margin-top: 5.5rem;
}

.kicker {
  margin: 0 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-light);
}

h2 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  color: var(--fg-bold);
}

.job {
  display: grid;
  grid-template-columns: minmax(9rem, 14rem) 1fr;
  gap: 0.5rem 2rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--border);
}

.when {
  margin: 0.15rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--fg-light);
}

h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--fg-bold);
}

.place {
  margin: 0.2rem 0 0.6rem;
  color: var(--fg-light);
}

ul {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
}

li + li {
  margin-top: 0.35rem;
}

.subgroup {
  margin-top: 1rem;
}

.subgroup h4 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--fg-bold);
}

.ai-grid,
.project-grid,
.skill-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.ai-card,
.project-card,
.skill-card {
  background: var(--bg-raised);
  padding: 1.25rem 1.3rem 1.35rem;
}

.ai-card h3,
.project-card h3 {
  margin-bottom: 0.45rem;
}

.ai-card p,
.project-card p {
  margin: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
}

.tags li {
  margin: 0;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--border-strong);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--fg-light);
}

.project-card .actions {
  margin-top: 1rem;
}

.skill-card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.skill-card p {
  margin: 0;
  color: var(--fg);
}

.plain-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--border);
}

.plain-list li {
  margin: 0;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem 2.5rem;
  color: var(--fg-light);
  font-size: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem;
}

.site-footer h2 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-light);
  margin-bottom: 0.6rem;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer li + li {
  margin-top: 0.35rem;
}

.site-footer a {
  color: var(--fg);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
}

.copyright {
  margin: 1.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
}

@media (max-width: 800px) {
  .job,
  .ai-grid,
  .project-grid,
  .skill-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    grid-template-columns: 1fr;
    padding-block: 0.8rem;
  }

  .nav {
    justify-content: flex-start;
  }
}