:root {
  --bg: #f3f0e8;
  --surface: #e8e4da;
  --surface-soft: #f7f3ea;
  --ink: #11110f;
  --muted: #68665f;
  --line: rgba(17, 17, 15, 0.18);
  --dark: #11110f;
  --dark-warm: #28241f;
  --dark-ink: #f3f0e8;
  --accent: #bf5a3d;
  --max: 1180px;
  --pad: clamp(1.25rem, 4vw, 4rem);
  --radius: 1.1rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body.is-locked {
  overflow: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

::selection {
  background: var(--ink);
  color: var(--bg);
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  background: #fff;
  color: #000;
  padding: 0.6rem 0.8rem;
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: none;
}

.shell {
  width: min(var(--max), calc(100% - (var(--pad) * 2)));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  padding: 0 var(--pad);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand__mark {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--accent);
}

.nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.86rem;
}

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

.nav a:hover,
.nav a:focus-visible {
  color: var(--ink);
}

.menu-button {
  display: none;
  border: 0;
  background: none;
  color: var(--ink);
}

.eyebrow {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  min-height: calc(100vh - 74px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: end;
  gap: 3rem;
  padding-top: clamp(6rem, 12vw, 11rem);
  padding-bottom: 3rem;
}

.hero__copy {
  max-width: 900px;
}

.hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(3.6rem, 8.6vw, 8.9rem);
  line-height: 0.9;
  letter-spacing: -0.075em;
  font-weight: 650;
}

.hero__lede {
  max-width: 700px;
  margin: 2.2rem 0 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 1.7vw, 1.4rem);
  line-height: 1.55;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  min-height: 48px;
  padding: 0 1rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button--ghost {
  background: transparent;
  color: var(--ink);
}

.button--light {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--bg);
}

.hero__status {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  padding-bottom: 0.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero__status p {
  margin: 0;
}

.hero__status strong {
  color: var(--ink);
  font-weight: 650;
}

.status-dot {
  flex: 0 0 auto;
  width: 0.7rem;
  height: 0.7rem;
  margin-top: 0.25rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(191, 90, 61, 0.12);
}

.capabilities {
  padding-top: clamp(6rem, 10vw, 10rem);
  padding-bottom: clamp(6rem, 10vw, 10rem);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.8fr 2fr;
  gap: 2rem;
  align-items: start;
  margin-bottom: 4rem;
}

.section-heading h2 {
  max-width: 800px;
  margin: 0;
  font-size: clamp(2.4rem, 5.5vw, 5.6rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
  font-weight: 620;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}

.capability {
  min-height: 260px;
  padding: 1.25rem;
  border-right: 1px solid var(--line);
}

.capability:first-child {
  border-left: 1px solid var(--line);
}

.capability__number {
  color: var(--muted);
  font-size: 0.72rem;
}

.capability h3 {
  margin: 4rem 0 0.8rem;
  font-size: 1.15rem;
}

.capability p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.case-study {
  background: var(--dark);
  color: var(--dark-ink);
  padding: clamp(6rem, 10vw, 10rem) 0;
}

.case-study--secondary {
  background: var(--dark-warm);
  border-top: 1px solid rgba(243, 240, 232, 0.3);
}

.case-study--secondary .case-block,
.case-study--secondary .contribution {
  background: var(--dark-warm);
}

.case-study .eyebrow {
  color: #97948a;
}

.case-study__intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: end;
}

.case-study__intro h2 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 6rem);
  letter-spacing: -0.06em;
  line-height: 0.95;
  font-weight: 620;
}

.case-study__summary {
  max-width: 620px;
  margin: 0;
  color: #bcb8ae;
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
}

.case-study__meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 5rem;
  border-top: 1px solid rgba(243, 240, 232, 0.18);
  border-bottom: 1px solid rgba(243, 240, 232, 0.18);
}

.case-study__meta div {
  padding: 1.2rem 1rem 1.2rem 0;
}

.case-study__meta span,
.case-study__meta strong {
  display: block;
}

.case-study__meta span {
  color: #858178;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.case-study__meta strong {
  margin-top: 0.45rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.case-study__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 5rem;
  background: rgba(243, 240, 232, 0.15);
}

.case-block {
  min-height: 390px;
  padding: clamp(1.5rem, 3vw, 3rem);
  background: var(--dark);
}

.case-block--wide {
  grid-column: 1 / -1;
}

.case-block h3 {
  max-width: 700px;
  margin: 0 0 1.4rem;
  font-size: clamp(1.8rem, 3vw, 3.25rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 570;
}

.case-block > p:not(.eyebrow) {
  max-width: 680px;
  color: #aaa69d;
}

.philosophy {
  padding: clamp(6rem, 12vw, 12rem) 0;
  background: var(--surface);
}

.philosophy__inner blockquote {
  max-width: 1050px;
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.contact {
  background: var(--accent);
  color: #fffaf4;
}

.contact__inner {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.contact .eyebrow {
  color: rgba(255, 250, 244, 0.7);
}

.contact h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(3rem, 7vw, 7.5rem);
  line-height: 0.9;
  letter-spacing: -0.065em;
  font-weight: 620;
}

.contact p {
  margin: 2rem 0;
  color: rgba(255, 250, 244, 0.8);
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 1rem;
}

.contact__links a {
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.2rem;
  font-weight: 650;
}

.contact-link {
  position: relative;
  border: 0;
  border-bottom: 1px solid currentColor;
  padding: 0 0 0.2rem;
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.contact-tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.75rem);
  z-index: 2;
  width: max-content;
  max-width: min(78vw, 430px);
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(17, 17, 15, 0.16);
  border-radius: 999px;
  background: var(--surface-soft);
  box-shadow: 0 0.65rem 1.6rem rgba(58, 25, 16, 0.18);
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 650;
  line-height: 1.3;
  overflow-wrap: anywhere;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 0.35rem);
  transition: opacity 120ms ease, transform 120ms ease;
}

.contact-tooltip::after {
  position: absolute;
  top: 100%;
  left: 50%;
  width: 0;
  height: 0;
  border: 0.32rem solid transparent;
  border-top-color: var(--surface-soft);
  content: "";
  transform: translateX(-50%);
}

.contact-link:hover .contact-tooltip,
.contact-link:focus-visible .contact-tooltip,
.contact-link.is-copied .contact-tooltip {
  opacity: 1;
  transform: translate(-50%, 0);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.footer {
  min-height: 110px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 0.78rem;
}

.made-with-love {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  border-bottom: 1px solid currentColor;
}

.birthday {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  background: var(--dark);
  color: var(--dark-ink);
}

.birthday.is-visible {
  display: block;
}

.birthday__inner {
  width: min(900px, calc(100% - 2.5rem));
  min-height: 100%;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 3rem 0;
}

.birthday .eyebrow {
  color: #858178;
}

.birthday h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(3rem, 8vw, 7.5rem);
  line-height: 0.92;
  letter-spacing: -0.07em;
  font-weight: 580;
}

.birthday__copy {
  max-width: 560px;
  margin: 2rem 0 0;
  color: #aaa69d;
  font-size: 1.15rem;
}

.birthday__wish {
  margin: 0.65rem 0 2.5rem;
  font-size: 1.15rem;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    align-items: end;
  }

  .hero__status {
    max-width: 300px;
  }

  .section-heading,
  .case-study__intro {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .capability:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .case-study__meta {
    grid-template-columns: 1fr;
  }

  .case-study__body {
    grid-template-columns: 1fr;
  }

  .case-block--wide {
    grid-column: auto;
  }

}

@media (max-width: 680px) {
  :root {
    --pad: 1.1rem;
  }

  .site-header {
    min-height: 66px;
  }

  .menu-button {
    display: block;
  }

  .nav {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0.4rem var(--pad) 1rem;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 0.8rem 0;
  }

  .hero {
    min-height: calc(100svh - 66px);
    padding-top: 5rem;
  }

  .hero h1 {
    font-size: clamp(3.4rem, 17vw, 5.8rem);
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .capability-grid {
    grid-template-columns: 1fr;
  }

  .capability {
    min-height: 210px;
    border-left: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .capability h3 {
    margin-top: 2.8rem;
  }

  .case-study__meta {
    margin-top: 3rem;
  }

  .case-block {
    min-height: 320px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.8rem;
  }

  .birthday h1 {
    font-size: clamp(3rem, 15vw, 5.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Selected-work and teaching extensions */
.contribution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 3rem;
  background: rgba(243, 240, 232, 0.14);
}

.contribution {
  min-height: 280px;
  padding: 1.5rem;
  background: var(--dark);
}

.contribution > span {
  color: #858178;
  font-size: 0.72rem;
}

.contribution h4 {
  margin: 3rem 0 1rem;
  font-size: 1.35rem;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.contribution p {
  margin: 0;
  color: #aaa69d;
  font-size: 0.9rem;
}

.case-block--compact {
  min-height: auto;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tag-list > span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 650;
}

.tag-list--dark {
  margin-top: 2rem;
}

.tag-list--dark > span {
  border-color: rgba(243, 240, 232, 0.22);
  color: #d2cec4;
}

.teaching {
  padding: clamp(6rem, 10vw, 10rem) 0;
  background: var(--surface-soft);
}

.teaching__header {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 5rem;
  align-items: end;
}

.teaching__header h2 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 6.5rem);
  line-height: 0.92;
  letter-spacing: -0.06em;
  font-weight: 620;
}

.teaching__org {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 650;
}

.teaching__headline {
  max-width: 680px;
  margin: 0;
  font-size: clamp(1.8rem, 3.3vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.teaching__body {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 5rem;
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.teaching__copy {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.teaching__facts {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.teaching__period {
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.teaching__responsibilities {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 4rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.teaching-responsibility {
  min-height: 240px;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  background: var(--surface);
}

.teaching-responsibility > span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
}

.teaching-responsibility h3 {
  margin: 2.5rem 0 0.8rem;
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.teaching-responsibility p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .contribution-grid {
    grid-template-columns: 1fr;
  }

  .contribution {
    min-height: auto;
  }

  .contribution h4 {
    margin-top: 2rem;
  }

  .teaching__header,
  .teaching__body {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .teaching__responsibilities {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .teaching__header h2 {
    font-size: clamp(3rem, 14vw, 5.2rem);
  }
}