:root {
  --color-background: #ffffff;
  --color-text: #111111;
  --color-muted: #666666;
  --color-border: #d8d8d8;
  --color-placeholder: #eeeeee;
  --font-family: Arial, Helvetica, sans-serif;
  --font-size-small: 0.875rem;
  --font-size-base: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --font-size-large: clamp(1.25rem, 1.1rem + 0.75vw, 1.65rem);
  --font-size-heading: clamp(2rem, 1.55rem + 2.25vw, 3.5rem);
  --font-size-display: clamp(2.75rem, 1.8rem + 4.75vw, 6rem);
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: clamp(4rem, 8vw, 7rem);
  --container-width: 72rem;
  --header-height: 4.5rem;
  --border: 1px solid var(--color-border);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 1rem); }
body { margin: 0; background: var(--color-background); color: var(--color-text); font-family: var(--font-family); font-size: var(--font-size-base); line-height: 1.6; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: 0.2em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.1; }
h1 { max-width: 12ch; margin-bottom: var(--space-md); font-size: var(--font-size-display); letter-spacing: -0.05em; }
h2 { margin-bottom: 0; font-size: var(--font-size-heading); letter-spacing: -0.035em; }
h3 { margin-bottom: var(--space-xs); font-size: var(--font-size-large); }
.container { width: min(calc(100% - 2.5rem), var(--container-width)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; top: 1rem; left: 1rem; padding: 0.65rem 1rem; transform: translateY(-180%); border: 2px solid var(--color-text); background: var(--color-background); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--color-text); outline-offset: 4px; }

.site-header { position: sticky; z-index: 10; top: 0; min-height: var(--header-height); border-bottom: var(--border); background: var(--color-background); }
.header-inner { min-height: var(--header-height); display: flex; align-items: center; justify-content: space-between; gap: var(--space-lg); }
.wordmark { font-size: var(--font-size-small); font-weight: 700; letter-spacing: 0.04em; text-decoration: none; }
.primary-nav ul { display: flex; gap: clamp(1rem, 2.5vw, 2rem); margin: 0; padding: 0; list-style: none; }
.primary-nav a { font-size: var(--font-size-small); font-weight: 600; text-decoration: none; }
.primary-nav a:hover { text-decoration: underline; }
.nav-toggle { display: none; }

.hero { padding-block: var(--space-xl); border-bottom: var(--border); }
.hero-grid { min-height: 38rem; display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(16rem, 0.6fr); gap: clamp(3rem, 8vw, 7rem); align-items: center; }
.label, .entry-date, .entry-meta, .project-meta { color: var(--color-muted); font-size: var(--font-size-small); }
.label { margin-bottom: var(--space-sm); font-weight: 700; }
.intro { max-width: 42rem; font-size: var(--font-size-large); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md); margin-top: var(--space-lg); }
.button { display: inline-flex; min-height: 3rem; align-items: center; justify-content: center; padding: 0.7rem 1.1rem; border: 2px solid var(--color-text); background: var(--color-text); color: var(--color-background); font-size: var(--font-size-small); font-weight: 700; text-decoration: none; }
.button:hover { background: var(--color-background); color: var(--color-text); }
.text-link { font-size: var(--font-size-small); font-weight: 700; }
.media-placeholder { margin: 0; }
.media-placeholder img { width: 100%; border: var(--border); background: var(--color-placeholder); }
.media-placeholder figcaption { margin-top: var(--space-xs); color: var(--color-muted); font-size: var(--font-size-small); }

.section { padding-block: var(--space-xl); border-bottom: var(--border); }
.section-grid { display: grid; grid-template-columns: minmax(14rem, 0.65fr) minmax(20rem, 1.35fr); gap: clamp(3rem, 9vw, 8rem); }
.content-column { max-width: 44rem; }
.content-column > p:not(.intro), .section-heading > p, .entry div > p:last-child, .project-content > p:not(.project-meta), .credential div > p { color: var(--color-muted); }
.details-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); margin: var(--space-lg) 0 0; padding-top: var(--space-md); border-top: var(--border); }
.details-grid dt { color: var(--color-muted); font-size: var(--font-size-small); }
.details-grid dd { margin: 0.25rem 0 0; font-weight: 600; }
.section-heading { display: grid; grid-template-columns: 1fr minmax(16rem, 25rem); gap: var(--space-lg); align-items: end; margin-bottom: var(--space-lg); }
.section-heading > p { margin-bottom: 0; }
.entry-list { border-top: var(--border); }
.entry { display: grid; grid-template-columns: minmax(10rem, 0.65fr) 1.35fr; gap: var(--space-lg); padding-block: var(--space-lg); border-bottom: var(--border); }
.entry:last-child { border-bottom: 0; }
.entry div > p:last-child { max-width: 44rem; margin-bottom: 0; }
.entry-meta { margin-bottom: var(--space-sm); }

.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.project-card { border: var(--border); }
.project-card > img { width: 100%; aspect-ratio: 3 / 2; border-bottom: var(--border); background: var(--color-placeholder); object-fit: cover; }
.project-content { padding: var(--space-md); }
.project-meta { margin-bottom: var(--space-sm); }
.project-content > p:not(.project-meta) { min-height: 4.8em; }
.skill-groups { display: grid; gap: var(--space-lg); }
.skill-groups section { padding-bottom: var(--space-lg); border-bottom: var(--border); }
.skill-groups section:last-child { padding-bottom: 0; border-bottom: 0; }
.skill-groups ul { display: flex; flex-wrap: wrap; gap: var(--space-sm) var(--space-lg); margin: var(--space-sm) 0 0; padding: 0; list-style: none; }
.skill-groups li { color: var(--color-muted); }
.credential { display: grid; grid-template-columns: 5rem 1fr; gap: var(--space-md); padding-block: var(--space-md); border-bottom: var(--border); }
.credential:last-child { border-bottom: 0; }
.credential p { margin-bottom: 0; }
.resume-section { padding-block: var(--space-lg); border-bottom: var(--border); }
.resume-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-lg); }
.resume-inner h2 { margin-bottom: var(--space-xs); font-size: var(--font-size-large); }
.resume-inner p { margin-bottom: 0; color: var(--color-muted); }
address { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-xs); margin-top: var(--space-lg); font-style: normal; font-weight: 700; }
.site-footer { padding-block: var(--space-lg); font-size: var(--font-size-small); }
.footer-inner { display: flex; justify-content: space-between; gap: var(--space-md); }
.footer-inner p { margin: 0; }

@media (max-width: 800px) {
  .js .nav-toggle { display: inline-flex; align-items: center; gap: 0.65rem; padding: 0.4rem; border: 0; background: transparent; color: var(--color-text); cursor: pointer; font-size: var(--font-size-small); font-weight: 700; }
  .nav-toggle-icon { display: grid; gap: 5px; }
  .nav-toggle-icon span { display: block; width: 1.25rem; height: 2px; background: currentColor; }
  .primary-nav { width: 100%; }
  .primary-nav ul { flex-wrap: wrap; }
  .js .primary-nav { position: absolute; top: 100%; left: 0; display: none; padding: var(--space-sm) 1.25rem var(--space-md); border-bottom: var(--border); background: var(--color-background); }
  .js .primary-nav.is-open { display: block; }
  .js .primary-nav ul { flex-direction: column; gap: 0; }
  .js .primary-nav a { display: block; padding: 0.55rem 0; }
  .hero-grid { min-height: 0; grid-template-columns: 1fr; }
  .profile-placeholder { width: min(100%, 28rem); }
  .section-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .project-grid { grid-template-columns: 1fr 1fr; }
  .project-card:last-child { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 2rem), var(--container-width)); }
  .section-heading { grid-template-columns: 1fr; gap: var(--space-sm); }
  .details-grid { grid-template-columns: 1fr; }
  .entry { grid-template-columns: 1fr; gap: var(--space-xs); }
  .entry-date { margin-bottom: 0; }
  .project-grid { grid-template-columns: 1fr; }
  .project-card:last-child { grid-column: auto; }
  .resume-inner, .footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

@media print {
  .site-header, .skip-link, .resume-section { display: none; }
  .section, .hero { padding-block: 2rem; }
}