:root {
  --white: #ffffff;
  --ink: #050505;
  --muted: #4f4f54;
  --line: #c9c9ce;
  --blue: #123dff;
  --blue-dark: #0a2fd0;
  --amber: #ffb20a;
  --header-height: 88px;
  --gutter: clamp(1.25rem, 5.5vw, 5rem);
  --max-width: 1600px;
  --sans: Arial, Helvetica, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

img {
  display: block;
  max-width: 100%;
}

svg {
  width: 1.35rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-150%);
}

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

.page-shell {
  width: min(100%, var(--max-width));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section-space {
  padding-top: clamp(6rem, 11vw, 10rem);
  padding-bottom: clamp(6rem, 11vw, 10rem);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--gutter);
  border-bottom: 1px solid rgba(5, 5, 5, 0.18);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  transition: height 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  height: 70px;
  box-shadow: 0 5px 24px rgba(0, 0, 0, 0.05);
}

.wordmark {
  position: relative;
  z-index: 2;
  font-family: var(--mono);
  font-size: clamp(0.8rem, 1.25vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 3rem);
  font-family: var(--mono);
  font-size: 0.88rem;
}

.site-nav a {
  position: relative;
  padding-block: 0.5rem;
}

.site-nav a:not(.nav-cta)::after {
  position: absolute;
  right: 0;
  bottom: 0.2rem;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  color: var(--blue);
  font-weight: 700;
}

.nav-cta span {
  display: inline-block;
  margin-left: 0.35rem;
  color: var(--amber);
  transition: transform 180ms ease;
}

.nav-cta:hover span {
  transform: translateX(0.3rem);
}

.menu-toggle {
  display: none;
}

.hero {
  min-height: 100svh;
  padding-top: calc(var(--header-height) + clamp(3rem, 8vh, 6rem));
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.92fr);
  grid-template-rows: 1fr auto;
  gap: clamp(2.5rem, 5vw, 5.5rem);
  align-items: center;
}

.hero-copy {
  position: relative;
  padding-left: clamp(1.2rem, 3vw, 3rem);
}

.hero-copy::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: var(--blue);
  content: "";
}

.hero h1,
.section-heading h2,
.experience-intro h2,
.contact-copy h2 {
  margin: 0;
  font-size: clamp(3.1rem, 6.4vw, 7.2rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 0.94;
}

.hero h1 {
  font-size: clamp(3.1rem, 5.45vw, 6.15rem);
}

.hero-summary {
  max-width: 39rem;
  margin: clamp(1.75rem, 3vw, 2.6rem) 0 0;
  font-family: var(--mono);
  font-size: clamp(1rem, 1.4vw, 1.3rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: clamp(1.8rem, 3vw, 3rem);
}

.button {
  min-width: 12.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.15rem 1.35rem;
  border: 2px solid var(--blue);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 700;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-3px);
}

.button-primary {
  color: var(--white);
  background: var(--blue);
}

.button-primary:hover {
  background: var(--blue-dark);
}

.button-secondary {
  color: var(--blue);
  background: var(--white);
}

.button-secondary:hover {
  color: var(--white);
  background: var(--blue);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-top: 2.5rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-meta span:not(:last-child)::after {
  margin-left: 1.5rem;
  color: var(--amber);
  content: "/";
}

.portrait-frame {
  align-self: stretch;
  min-height: 35rem;
  margin: 0;
  overflow: hidden;
  border-radius: 0 0 12px 12px;
}

.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
}

.section-preview {
  grid-column: 1 / -1;
  min-height: 7.5rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 2rem clamp(1.5rem, 3.5vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 10px 10px 0 0;
  font-size: clamp(1.35rem, 2.4vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
}

.section-preview .vertical-rule {
  height: 3.4rem;
}

.vertical-rule {
  width: 6px;
  min-height: 4rem;
  align-self: stretch;
  background: var(--blue);
}

.section-heading {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  max-width: 78rem;
}

.section-heading h2,
.experience-intro h2 {
  font-size: clamp(3rem, 6vw, 6.4rem);
}

.section-heading p,
.experience-intro p:not(.mono-label) {
  max-width: 48rem;
  margin: 2rem 0 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: clamp(1rem, 1.35vw, 1.25rem);
  line-height: 1.6;
}

.work-list {
  margin-top: clamp(4rem, 7vw, 7rem);
}

.work-row {
  display: grid;
  grid-template-columns: minmax(7rem, 0.6fr) minmax(15rem, 1.55fr) minmax(16rem, 1.65fr) minmax(12rem, 1fr);
  gap: clamp(1.25rem, 3vw, 3rem);
  align-items: center;
  padding: clamp(2rem, 4vw, 3.25rem) 0;
  border-top: 1px solid var(--line);
}

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

.work-number {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-family: var(--mono);
  font-size: clamp(1.7rem, 2.7vw, 2.6rem);
  font-weight: 700;
}

.work-number span {
  color: var(--blue);
}

.work-number i {
  color: var(--amber);
  font-style: normal;
}

.work-row h3,
.approach-item h3 {
  margin: 0;
  font-size: clamp(1.5rem, 2.6vw, 2.5rem);
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.work-row p,
.approach-item p {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.98rem;
  line-height: 1.55;
}

.work-tech {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.experience {
  background: #f5f5f6;
}

.experience-intro {
  display: grid;
  grid-template-columns: minmax(10rem, 0.35fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}

.mono-label {
  margin: 0.7rem 0 0;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline {
  margin-top: clamp(4rem, 7vw, 7rem);
}

.timeline-item {
  display: grid;
  grid-template-columns: 0.7fr 1.2fr 1.8fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: 2.5rem 0;
  border-top: 1px solid #b4b4ba;
}

.timeline-item:last-child {
  border-bottom: 1px solid #b4b4ba;
}

.timeline-date,
.timeline-role p,
.timeline-description {
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.55;
}

.timeline-date {
  color: var(--blue);
  font-weight: 700;
}

.timeline-role h3 {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  letter-spacing: -0.035em;
}

.timeline-role p,
.timeline-description {
  margin: 0.45rem 0 0;
}

.timeline-role p {
  color: var(--muted);
}

.toolkit-title-band {
  padding-block: 3.1rem;
  color: var(--white);
  background: var(--blue);
}

.toolkit-title-band .page-shell {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}

.toolkit-title-band h2 {
  margin: 0;
  font-size: clamp(2.6rem, 5vw, 5rem);
  letter-spacing: -0.055em;
}

.toolkit-title-band p {
  max-width: 36rem;
  margin: 0 0 0.5rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.55;
}

.toolkit-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: clamp(3rem, 6vw, 5.5rem) 0;
  list-style: none;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: clamp(1rem, 1.8vw, 1.35rem);
}

.toolkit-list li:not(:last-child)::after {
  margin-inline: clamp(0.7rem, 1.8vw, 1.6rem);
  color: var(--amber);
  content: "·";
}

.toolkit-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding-block: 3rem 6rem;
}

.toolkit-details > div {
  padding: 1rem clamp(1.5rem, 3vw, 3rem);
}

.toolkit-details > div:first-child {
  padding-left: 0;
}

.toolkit-details > div:not(:last-child) {
  border-right: 1px solid var(--line);
}

.toolkit-details span {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.toolkit-details p {
  margin: 1rem 0 0;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.6;
}

.approach-section {
  padding-top: clamp(6rem, 10vw, 9rem);
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(4rem, 7vw, 7rem);
}

.approach-item {
  min-height: 18rem;
  padding: 2rem clamp(2rem, 4vw, 4rem);
}

.approach-item:first-child {
  padding-left: 0;
}

.approach-item:not(:last-child) {
  border-right: 1px solid var(--line);
}

.approach-item h3 {
  margin-top: 2rem;
}

.approach-item p {
  margin-top: 1.25rem;
}

.contact-section {
  position: relative;
  min-height: 49rem;
  overflow: hidden;
  color: var(--white);
  background: var(--blue);
}

.contact-mark {
  position: absolute;
  top: -11rem;
  left: -5rem;
  color: rgba(0, 0, 0, 0.11);
  font-size: clamp(30rem, 62vw, 64rem);
  font-weight: 900;
  letter-spacing: -0.1em;
  line-height: 0.9;
  user-select: none;
}

.contact-inner {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-end;
  padding-top: clamp(6rem, 10vw, 10rem);
  padding-bottom: clamp(6rem, 9vw, 9rem);
}

.contact-copy {
  width: min(68rem, 76%);
}

.contact-copy h2 {
  font-size: clamp(3.8rem, 7.4vw, 8rem);
}

.contact-copy p {
  max-width: 47rem;
  margin: 2.5rem 0 0;
  font-family: var(--mono);
  font-size: clamp(1rem, 1.5vw, 1.3rem);
  line-height: 1.7;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.2rem;
  align-items: center;
  margin-top: 3rem;
}

.contact-button {
  min-width: 19rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  padding: 1.35rem 1.5rem;
  border: 2px solid var(--white);
  border-radius: 4px;
  font-family: var(--mono);
  font-weight: 700;
  transition: background 180ms ease, color 180ms ease;
}

.contact-button svg {
  color: var(--amber);
}

.contact-button:hover,
.contact-button:focus-visible {
  color: var(--blue);
  background: var(--white);
}

.contact-text-link {
  padding-block: 0.7rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.65);
  font-family: var(--mono);
  font-size: 0.9rem;
}

.site-footer {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding-top: 2.6rem;
  padding-bottom: 2.6rem;
  border-top: 1px solid rgba(255, 255, 255, 0.45);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-footer span:nth-child(2) {
  text-align: center;
  text-transform: none;
}

.site-footer span:last-child {
  text-align: right;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal-delay {
  transition-delay: 120ms;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 4px;
}

@media (max-width: 1050px) {
  .hero {
    grid-template-columns: 1fr 0.78fr;
  }

  .hero h1 {
    font-size: clamp(3rem, 5.2vw, 4.7rem);
  }

  .work-row {
    grid-template-columns: 0.5fr 1.35fr 1.5fr;
  }

  .work-tech {
    grid-column: 2 / -1;
  }

  .contact-copy {
    width: 82%;
  }
}

@media (max-width: 820px) {
  :root {
    --header-height: 72px;
  }

  body.menu-open .site-header {
    height: 100vh;
    align-items: flex-start;
    padding-top: 1.55rem;
  }

  .menu-toggle {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 0.75rem;
    align-items: center;
    padding: 0.5rem 0;
    border: 0;
    color: var(--ink);
    background: transparent;
    font-family: var(--mono);
    font-size: 0.8rem;
    text-transform: uppercase;
  }

  .menu-mark,
  .menu-mark::before {
    display: block;
    width: 1.4rem;
    height: 2px;
    background: currentColor;
    content: "";
    transition: transform 180ms ease;
  }

  .menu-mark::before {
    transform: translateY(-6px);
  }

  .menu-toggle[aria-expanded="true"] .menu-mark {
    transform: rotate(45deg);
  }

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

  .site-nav {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: auto;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 1.5rem;
    padding: 8.5rem var(--gutter) 3rem;
    background: var(--white);
    font-size: clamp(1.7rem, 7vw, 3rem);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-1rem);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    padding-top: calc(var(--header-height) + 4rem);
  }

  .hero-copy {
    padding-left: 1.5rem;
  }

  .hero h1 {
    font-size: clamp(3.5rem, 12vw, 6.5rem);
  }

  .portrait-frame {
    min-height: auto;
    aspect-ratio: 4 / 5;
    max-height: 48rem;
  }

  .section-preview {
    grid-column: 1;
  }

  .work-row {
    grid-template-columns: 1fr;
  }

  .work-tech {
    grid-column: auto;
  }

  .experience-intro,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    gap: 0.65rem;
  }

  .toolkit-title-band .page-shell {
    display: block;
  }

  .toolkit-title-band p {
    margin-top: 1rem;
  }

  .toolkit-details,
  .approach-grid {
    grid-template-columns: 1fr;
  }

  .toolkit-details > div,
  .toolkit-details > div:first-child,
  .approach-item,
  .approach-item:first-child {
    padding: 2rem 0;
  }

  .toolkit-details > div:not(:last-child),
  .approach-item:not(:last-child) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .approach-item {
    min-height: 0;
  }

  .contact-copy {
    width: 100%;
  }

  .contact-mark {
    left: -9rem;
    opacity: 0.65;
  }
}

@media (max-width: 520px) {
  .wordmark {
    max-width: 12rem;
    line-height: 1.3;
  }

  .hero h1,
  .section-heading h2,
  .experience-intro h2,
  .contact-copy h2 {
    letter-spacing: -0.055em;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-meta {
    display: grid;
  }

  .hero-meta span::after {
    display: none;
  }

  .section-heading {
    grid-template-columns: 6px 1fr;
  }

  .section-heading h2 {
    font-size: clamp(2.7rem, 13vw, 4rem);
  }

  .section-preview {
    grid-template-columns: 5px 1fr;
    border-inline: 0;
  }

  .section-preview svg {
    display: none;
  }

  .work-number {
    font-size: 1.8rem;
  }

  .contact-button {
    width: 100%;
    min-width: 0;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .site-footer span:nth-child(2),
  .site-footer span:last-child {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}