:root {
  --background: #f7f7f3;
  --surface: #efefe9;
  --text-primary: #1d1d1a;
  --text-secondary: #686860;
  --border: #d7d7cf;
  --accent: #3f5f4a;
  --container-width: 72rem;
  --space: clamp(1.25rem, 4vw, 3rem);
  --radius: 0.5rem;
}

html {
  scroll-padding-top: 5rem;
}

body {
  min-width: 20rem;
  background: var(--background);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

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

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: 0.125rem;
}

.container {
  width: min(100% - (var(--space) * 2), var(--container-width));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.65rem 1rem;
  transform: translateY(-200%);
  border-radius: var(--radius);
  background: var(--text-primary);
  color: var(--background);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: var(--background);
}

.header-inner {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-name {
  font-weight: 700;
  text-decoration: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-icon,
.nav-toggle-icon::before {
  display: block;
  width: 1.25rem;
  height: 1px;
  background: currentColor;
  content: "";
  transition: transform 180ms ease;
}

.nav-toggle-icon::before {
  transform: translateY(0.35rem);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  transform: translateY(0.18rem) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: rotate(-90deg);
}

.primary-navigation ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.primary-navigation a {
  color: var(--text-secondary);
  font-size: 0.925rem;
  text-decoration: none;
}

.section {
  padding-block: clamp(5rem, 11vw, 9rem);
  border-bottom: 1px solid var(--border);
}

.section-surface {
  background: var(--surface);
}

.hero {
  display: grid;
  align-items: center;
  padding-block: clamp(4.5rem, 18vw, 7rem);
}

.eyebrow,
.section-number,
.hero-meta,
.work-type,
.note-card time {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 17ch;
  margin-block: 1.5rem;
  font-size: clamp(2.25rem, 10vw, 5.75rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.hero-meta {
  margin-bottom: 2.5rem;
}

.text-link {
  color: var(--accent);
  font-weight: 600;
}

.section-heading {
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.section-heading h2 {
  margin-top: 0.5rem;
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.work-item {
  display: grid;
  gap: 1rem;
  padding: 2rem 0.75rem;
  border-top: 1px solid var(--border);
  transition:
    background-color 180ms ease,
    transform 180ms ease;
}

.work-item:last-child {
  border-bottom: 1px solid var(--border);
}

.work-number {
  color: var(--text-secondary);
  font-size: 0.8125rem;
}

.work-item h3 {
  margin-bottom: 0.5rem;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500;
}

.work-item h3 a {
  text-decoration-color: transparent;
  transition:
    color 180ms ease,
    text-decoration-color 180ms ease;
}

.work-item:focus-within {
  background: var(--surface);
}

.work-item h3 a:hover,
.work-item h3 a:focus-visible {
  color: var(--accent);
  text-decoration-color: currentColor;
}

.work-item div p,
.note-card p,
.prose p {
  color: var(--text-secondary);
}

.split-layout {
  display: grid;
  gap: 1rem;
}

.prose {
  max-width: 42rem;
  font-size: clamp(1.2rem, 3vw, 1.75rem);
  line-height: 1.45;
}

.prose p + p {
  margin-top: 1.5rem;
}

.capabilities-list {
  display: grid;
  max-width: 42rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--border);
}

.capabilities-list li {
  padding-block: 1rem;
  border-bottom: 1px solid var(--border);
}

.capabilities-list li:nth-child(even) {
  padding-left: 1rem;
}

.notes-grid {
  display: grid;
  gap: 1rem;
}

.note-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--background);
  transition:
    border-color 180ms ease,
    transform 180ms ease;
}

.note-card:focus-within {
  border-color: var(--text-secondary);
}

.note-card h3 {
  margin-block: 1rem 0.75rem;
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.3;
}

.note-card h3 a {
  text-decoration: none;
}

.contact-section h2 {
  max-width: 15ch;
  margin-block: 1rem;
  font-size: clamp(2.25rem, 7vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.contact-section > .container > p:not(.section-number) {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 3rem;
}

.site-footer {
  padding-block: 2rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.error-page {
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
}

.error-main {
  display: grid;
  align-items: center;
  padding-block: clamp(4rem, 12vw, 8rem);
}

.error-main h1 {
  max-width: 12ch;
  margin-block: 1rem;
  font-size: clamp(3rem, 10vw, 7rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 0.98;
}

.error-main p:not(.eyebrow) {
  margin-bottom: 2rem;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

@media (max-width: 43.75rem) {
  .js .nav-toggle {
    display: flex;
  }

  .js .primary-navigation {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    padding: 1rem var(--space) 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--background);
  }

  .js .primary-navigation.is-open {
    display: block;
  }

  .js .primary-navigation ul {
    flex-direction: column;
    gap: 0;
  }

  .js .primary-navigation a {
    display: block;
    padding-block: 0.65rem;
    font-size: 1rem;
  }
}

@media (min-width: 43.75rem) {
  .work-item {
    grid-template-columns: 2.5rem minmax(0, 1fr) 11rem;
    align-items: start;
  }

  .work-type {
    text-align: right;
  }

  .split-layout {
    grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
    gap: var(--space);
  }

  .split-layout .section-heading {
    margin-bottom: 0;
  }

  .notes-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 48rem) {
  .hero {
    min-height: calc(100vh - 4.5rem);
    min-height: calc(100svh - 4.5rem);
    padding-block: clamp(5rem, 11vw, 9rem);
  }

  .hero h1 {
    font-size: clamp(2.5rem, 8vw, 5.75rem);
  }
}

@media (hover: hover) {
  .work-item:hover {
    background: var(--surface);
    transform: translateX(0.25rem);
  }

  .work-item:hover h3 a {
    color: var(--accent);
    text-decoration-color: currentColor;
  }

  .note-card:hover {
    border-color: var(--text-secondary);
    transform: translateY(-0.2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle-icon,
  .nav-toggle-icon::before,
  .work-item,
  .work-item h3 a,
  .note-card {
    transition-duration: 0.01ms;
  }

  .work-item:hover,
  .note-card:hover {
    transform: none;
  }
}