:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --bg-deep: #e9edf1;
  --surface: #ffffff;
  --surface-strong: #ffffff;
  --line: #cfd7df;
  --line-strong: #7590a3;
  --text: #17242d;
  --muted: #5e6d77;
  --accent: #155f78;
  --accent-strong: #0c4c63;
  --accent-soft: #e4eff3;
  --max-width: 1240px;
  --radius: 2px;
  --font-display: "Source Sans 3", system-ui, sans-serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

::selection {
  background: #d8e9ef;
  color: var(--text);
}

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

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

svg {
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  transform: translateY(-180%);
  padding: 0.65rem 1rem;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--bg-deep);
  font-weight: 700;
}

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

.page-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.22;
  background-image: linear-gradient(90deg, transparent calc(50% - 0.5px), var(--line) 50%, transparent calc(50% + 0.5px));
  background-size: 100% 100%;
}

.site-header,
.hero,
.proof-strip,
.section,
.contact-section,
.site-footer {
  width: min(calc(100% - 3rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 4.75rem;
  margin-top: 0;
  padding: 0.65rem 0.8rem;
  border: 1px solid transparent;
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled {
  border-color: transparent transparent var(--line);
  background: rgba(244, 246, 248, 0.95);
  box-shadow: none;
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  justify-self: start;
}

.brand-mark {
  display: grid;
  width: 2.7rem;
  height: 2.7rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-copy strong {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.brand-copy small {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.desktop-nav {
  display: flex;
  gap: 2rem;
  justify-content: center;
}

.desktop-nav a,
.header-cta {
  position: relative;
  font-size: 0.875rem;
  font-weight: 600;
}

.desktop-nav a {
  color: var(--muted);
  transition: color 180ms ease;
}

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

.header-cta {
  justify-self: end;
  padding: 0.65rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--accent-strong);
  transition: background 180ms ease, color 180ms ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: var(--accent-strong);
  color: #ffffff;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(22rem, 0.78fr);
  gap: clamp(3rem, 7vw, 7.5rem);
  align-items: center;
  min-height: min(52rem, calc(100vh - 4.75rem));
  padding-block: clamp(5rem, 10vh, 8rem);
}

.eyebrow {
  margin: 0 0 1.3rem;
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow span {
  margin-inline: 0.45rem;
  color: var(--muted);
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin-top: 0;
  font-family: var(--font-display);
}

h1 {
  max-width: 15ch;
  margin-bottom: 1.75rem;
  font-size: clamp(3rem, 6.2vw, 5.6rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.02;
}

h1 span {
  color: var(--accent-strong);
  font-weight: 500;
}

.hero-intro {
  max-width: 42rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.7vw, 1.3rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.25rem;
}

.button {
  display: inline-flex;
  min-height: 3.2rem;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.78rem 1.15rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.93rem;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.button svg {
  width: 1.1rem;
  height: 1.1rem;
  transition: transform 180ms ease;
}

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

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

.button-primary {
  background: var(--accent-strong);
  color: #ffffff;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #0a3e50;
}

.button-secondary {
  border-color: var(--line);
  background: #ffffff;
  color: var(--text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--line-strong);
  background: var(--accent-soft);
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin-top: 2rem;
}

.profile-links a,
.text-link,
.site-footer a {
  color: var(--accent-strong);
  font-size: 0.875rem;
  font-weight: 600;
  transition: color 180ms ease;
}

.profile-links a:hover,
.profile-links a:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  background: #ffffff;
  box-shadow: none;
}

.hero-panel::before { content: none; }

.panel-topline,
.panel-footer {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 1.15rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.panel-topline {
  border-bottom: 1px solid var(--line);
}

.panel-code {
  margin-left: auto;
}

.profile-focus {
  position: relative;
  padding: 2.25rem 2rem 1.85rem;
}

.profile-focus p {
  margin: 0 0 0.55rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.profile-focus h2 {
  margin: 0;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.profile-facts {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  border-top: 1px solid var(--line);
}

.profile-facts div {
  min-height: 7rem;
  padding: 1.15rem;
  border-bottom: 1px solid var(--line);
}

.profile-facts div:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.profile-facts dt {
  margin-bottom: 0.45rem;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.profile-facts dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.45;
}

.panel-footer {
  flex-wrap: wrap;
  gap: 0.4rem;
}

.panel-footer span {
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
}

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

.proof-strip div {
  min-height: 8.5rem;
  padding: 1.6rem;
  border-right: 1px solid var(--line);
}

.proof-strip div:last-child {
  border-right: 0;
}

.proof-strip strong {
  display: block;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.9rem);
  letter-spacing: -0.04em;
}

.proof-strip span {
  color: var(--muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.section {
  padding-block: clamp(6.5rem, 11vw, 10rem);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(10rem, 0.35fr) minmax(0, 1.2fr) minmax(15rem, 0.55fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.section-heading .eyebrow {
  align-self: start;
  margin-top: 0.55rem;
}

.section-heading h2,
.contact-copy h2 {
  margin: 0;
  font-size: clamp(2.15rem, 4vw, 3.8rem);
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.section-heading > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.project-list {
  display: grid;
  gap: 1rem;
}

.project-card {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  transition: border-color 160ms ease, background 160ms ease;
}

.project-card:hover {
  transform: none;
  border-color: var(--line-strong);
  background: #fbfcfd;
}

.project-featured {
  border-top: 4px solid var(--accent-strong);
  background: #ffffff;
}

.project-index {
  padding-top: 2rem;
  border-right: 1px solid var(--line);
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  text-align: center;
}

.project-body {
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
}

.project-heading {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  justify-content: space-between;
}

.project-type,
.project-context {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.project-heading h3 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  letter-spacing: -0.04em;
}

.project-link {
  flex: 0 0 auto;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--line-strong);
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 700;
}

.project-link:hover,
.project-link:focus-visible {
  border-color: var(--accent);
  color: #b5f6fd;
}

.project-summary {
  max-width: 51rem;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.45rem 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 0.22rem 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.project-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 1.6rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line);
}

.project-proof span {
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
}

.experience-section {
  border-top: 1px solid var(--line);
}

.experience-section .section-heading,
.capability-section .section-heading {
  grid-template-columns: minmax(10rem, 0.35fr) minmax(0, 1.75fr);
}

.timeline {
  border-top: 1px solid var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(10rem, 0.65fr) minmax(15rem, 0.9fr) minmax(20rem, 1.45fr);
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline-date {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.timeline-role h3 {
  margin-bottom: 0.35rem;
  font-size: 1.08rem;
}

.timeline-role p,
.timeline-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.capability-section {
  border-top: 1px solid var(--line);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-left: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

.capability-card {
  min-height: 15rem;
  padding: 1.8rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #ffffff;
  transition: background 160ms ease;
}

.capability-card:hover {
  background: var(--accent-soft);
}

.capability-number {
  color: var(--accent-strong);
  font-size: 0.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
}

.capability-card h3 {
  margin: 3rem 0 0.75rem;
  font-size: 1.25rem;
  letter-spacing: -0.025em;
}

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

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(15rem, 0.6fr);
  gap: 4rem;
  align-items: end;
  padding-block: clamp(5rem, 9vw, 8rem);
  border-top: 1px solid var(--line);
}

.contact-copy h2 {
  max-width: 17ch;
}

.contact-copy > p:last-child {
  max-width: 45rem;
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.5rem 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.reveal {
  opacity: 0;
  transform: none;
  transition: opacity 320ms ease;
}

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

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .desktop-nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 6rem;
  }

  .hero-panel {
    width: min(100%, 39rem);
  }

  .proof-strip {
    grid-template-columns: 1fr 1fr;
  }

  .proof-strip div:nth-child(2) {
    border-right: 0;
  }

  .proof-strip div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 1.1rem;
  }

  .section-heading .eyebrow {
    margin: 0;
  }

  .section-heading > p:last-child {
    max-width: 35rem;
  }

  .experience-section .section-heading,
  .capability-section .section-heading {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: minmax(10rem, 0.65fr) minmax(18rem, 1.35fr);
  }

  .timeline-copy {
    grid-column: 2;
  }

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

@media (max-width: 680px) {
  .site-header,
  .hero,
  .proof-strip,
  .section,
  .contact-section,
  .site-footer {
    width: min(calc(100% - 2rem), var(--max-width));
  }

  .site-header {
    min-height: 4rem;
    padding: 0.45rem;
  }

  .brand-copy small {
    display: none;
  }

  .header-cta {
    padding: 0.55rem 0.72rem;
  }

  .hero {
    gap: 3.5rem;
    padding-top: 4.5rem;
  }

  h1 {
    font-size: clamp(2.8rem, 15vw, 4.5rem);
  }

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

  .button {
    width: 100%;
  }

  .profile-facts {
    grid-template-columns: 1fr;
  }

  .profile-facts div:nth-child(odd) {
    border-right: 0;
  }

  .proof-strip {
    grid-template-columns: 1fr;
  }

  .proof-strip div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-strip div:last-child {
    border-bottom: 0;
  }

  .project-card {
    grid-template-columns: 3rem 1fr;
  }

  .project-heading {
    flex-direction: column;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .timeline-copy {
    grid-column: auto;
  }

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

  .capability-card {
    min-height: 12rem;
  }

  .capability-card h3 {
    margin-top: 2rem;
  }

  .contact-section {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

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

  *,
  *::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;
  }
}