:root {
  --background: #0b1017;
  --background-raised: #0e151e;
  --surface: #111925;
  --surface-raised: #16202d;
  --text: #edf1f6;
  --muted: #9da9b8;
  --subtle: #7e8b9c;
  --line: rgba(169, 184, 204, 0.17);
  --line-strong: rgba(124, 169, 232, 0.42);
  --accent: #8bb5eb;
  --accent-bright: #a7c9f1;
  --success: #77c89b;
  --danger: #e27f8a;
  --font-sans: "Manrope", Arial, sans-serif;
  --font-mono: "DM Mono", monospace;
  --content-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  scroll-behavior: smooth;
  scrollbar-color: #3c4959 var(--background);
}

body {
  margin: 0;
  overflow-x: hidden;
  background: linear-gradient(180deg, #0b1017 0%, #0c121a 52%, #0b1017 100%);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

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

button {
  color: inherit;
  font: inherit;
}

img,
svg {
  display: block;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  transform: translateY(-200%);
  background: var(--accent);
  color: #0b1420;
  font-weight: 800;
}

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

.shell {
  width: min(var(--content-width), calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  width: 100%;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 16, 23, 0.9);
  backdrop-filter: blur(20px);
}

.site-header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--content-width), calc(100% - 48px));
  height: 80px;
  margin-inline: auto;
}

.identity {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
}

.identity strong {
  font-size: 0.84rem;
  letter-spacing: -0.01em;
}

.identity span {
  color: var(--subtle);
  font-size: 0.58rem;
  letter-spacing: 0.035em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: 0.78rem;
  font-weight: 600;
}

.site-nav > a:not(.nav-cta) {
  color: var(--muted);
  transition: color 160ms ease;
}

.site-nav > a:hover {
  color: var(--text);
}

.nav-cta,
.menu-button {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #121a25;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.nav-cta {
  padding: 0.7rem 1rem;
}

.menu-button {
  display: none;
  padding: 0.6rem 0.8rem;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
}

.nav-cta:hover,
.menu-button:hover {
  border-color: rgba(124, 169, 232, 0.72);
  box-shadow: 0 0 0 1px rgba(124, 169, 232, 0.12);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.social-icon {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  object-fit: contain;
}

.site-nav .social-icon {
  width: 14px;
  height: 14px;
}

.github-icon {
  filter: invert(1);
  opacity: 0.88;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  min-height: 700px;
  padding-block: 6rem;
  gap: 7rem;
}

.eyebrow {
  margin: 0;
  color: var(--accent-bright);
  font: 500 0.7rem var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 780px;
  margin: 1.5rem 0 2rem;
  font-size: clamp(2.75rem, 4.4vw, 4.4rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.hero-intro {
  max-width: 690px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.hero-actions,
.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2.2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 800;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease;
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #0b1420;
}

.button-primary:hover {
  border-color: var(--accent-bright);
  background: var(--accent-bright);
}

.button-quiet {
  background: #101722;
  color: var(--muted);
}

.button-quiet:hover {
  border-color: rgba(124, 169, 232, 0.72);
  box-shadow: 0 0 0 1px rgba(124, 169, 232, 0.12);
  color: var(--text);
}

.profile-card {
  overflow: hidden;
  padding: 2.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.025), transparent 48%),
    #101721;
  box-shadow: 0 32px 75px rgba(0, 0, 0, 0.22);
}

.profile-label {
  margin: 0 0 1.2rem;
  color: #8190a2;
  font: 500 0.61rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.profile-card h2 {
  max-width: 420px;
  margin: 0;
  font-size: 1.8rem;
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.profile-org {
  margin: 0.65rem 0 2rem;
  color: var(--accent-bright);
  font-size: 0.78rem;
  font-weight: 600;
}

.profile-details {
  margin: 0;
  border-top: 1px solid var(--line);
}

.profile-details div {
  display: grid;
  grid-template-columns: 125px 1fr;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.profile-details dt {
  color: #778496;
  font: 400 0.58rem var(--font-mono);
  text-transform: uppercase;
}

.profile-details dd {
  margin: 0;
  color: #c5cdd8;
  font-size: 0.72rem;
  line-height: 1.5;
}

.profile-evidence {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 1.6rem -2.2rem -2.2rem;
  background: var(--line);
}

.profile-evidence span {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  background: #0d141d;
  color: #788697;
  font: 400 0.55rem var(--font-mono);
  text-align: center;
}

.profile-evidence b {
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 500;
}

.section {
  padding-block: 7rem;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  align-items: end;
  gap: 5rem;
  margin-bottom: 4rem;
}

.section-heading h2,
.experience-sticky h2 {
  margin: 0.9rem 0 0;
  font-size: clamp(2.15rem, 4vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.section-heading > p,
.experience-sticky > p:last-child {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.project-card {
  display: flex;
  min-width: 0;
  overflow: hidden;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.12);
  transition: border-color 180ms ease;
}

.project-card:hover {
  border-color: var(--line-strong);
}

.project-wide,
.project-full {
  grid-column: 1 / -1;
  display: grid;
}

.project-wide {
  grid-template-columns: 1.1fr 0.9fr;
  min-height: 540px;
}

.project-wide.reverse {
  grid-template-columns: 0.9fr 1.1fr;
}

.project-wide.reverse .project-visual {
  order: 2;
}

.project-full {
  grid-template-columns: 0.8fr 1.2fr;
}

.project-visual {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #080d14;
}

.project-wide .project-visual,
.project-full .project-visual {
  border-right: 1px solid var(--line);
  border-bottom: 0;
}

.project-wide.reverse .project-visual {
  border-right: 0;
  border-left: 1px solid var(--line);
}

.visual-label {
  position: absolute;
  z-index: 3;
  top: 1.2rem;
  left: 1.2rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 3px;
  background: rgba(7, 9, 13, 0.8);
  color: #c9d2dd;
  font: 500 0.6rem var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
}

.image-visual {
  height: 340px;
  min-height: 340px;
  background: #070b11;
}

.project-shot {
  width: 100%;
  height: 100%;
  padding: 3.5rem 0.85rem 0.85rem;
  object-fit: var(--image-fit, contain);
  object-position: var(--image-position, center);
}

.project-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 2rem;
}

.project-topline {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--subtle);
  font: 400 0.6rem var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-copy h3 {
  margin: 3.5rem 0 1rem;
  font-size: 1.85rem;
  line-height: 1;
  letter-spacing: -0.055em;
}

.project-copy > p {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.75;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.2rem 0 2rem;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #aab4c1;
  font: 500 0.6rem var(--font-mono);
}

.project-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.project-links a {
  color: var(--accent-bright);
  font-size: 0.75rem;
  font-weight: 800;
}

.project-links a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.project-note,
.award {
  color: var(--subtle) !important;
  font: 400 0.66rem/1.65 var(--font-mono) !important;
}

.quant-visual {
  background: #080e16;
}

.quant-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(124, 169, 232, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 169, 232, 0.05) 1px, transparent 1px);
  background-size: 42px 42px;
}

.quant-chart {
  position: absolute;
  inset: 17% 4% 20%;
  width: 92%;
  height: 63%;
}

.quant-architecture {
  position: absolute;
  right: 1.2rem;
  bottom: 1.2rem;
  left: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(124, 169, 232, 0.2);
  background: rgba(7, 12, 19, 0.88);
  color: #b6c4d5;
  font: 500 0.58rem var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
}

.quant-architecture i {
  color: var(--accent);
  font-style: normal;
}

.latch-visual {
  background:
    radial-gradient(
      circle at 68% 35%,
      rgba(123, 199, 255, 0.17),
      transparent 35%
    ),
    radial-gradient(
      circle at 24% 76%,
      rgba(145, 91, 255, 0.18),
      transparent 34%
    ),
    #0d0d13;
}

.mini-phone {
  position: absolute;
  z-index: 2;
  top: 54%;
  left: 50%;
  width: 210px;
  height: 420px;
  padding: 1.3rem;
  transform: translate(-20%, -50%) rotate(3deg);
  border: 7px solid #020303;
  border-radius: 34px;
  background: #0c0f17;
  box-shadow: 0 35px 70px rgba(0, 0, 0, 0.5);
}

.mini-island {
  width: 70px;
  height: 18px;
  margin: -0.8rem auto 1.5rem;
  border-radius: 20px;
  background: #020303;
}

.mini-appbar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.62rem;
}

.mini-lock {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 8px;
  background: #ef476f;
}

.mini-progress {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.25rem;
  margin: 1.2rem 0;
}

.mini-progress i {
  height: 4px;
  border-radius: 4px;
  background: #292d3a;
}

.mini-question {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1rem;
  border-radius: 14px;
  background: #171b29;
}

.mini-question small {
  color: #a5adc5;
  font: 500 0.42rem var(--font-mono);
}

.mini-question b {
  margin: 0.5rem 0;
  font-size: 0.7rem;
  line-height: 1.4;
}

.mini-question span {
  height: 28px;
  border: 1px solid #303546;
  border-radius: 7px;
}

.visual-word {
  position: absolute;
  bottom: 1rem;
  left: 1.2rem;
  color: rgba(255, 255, 255, 0.04);
  font-size: clamp(5rem, 12vw, 10rem);
  font-weight: 800;
  letter-spacing: -0.1em;
}

.project-collage {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: grid;
  padding: 3.5rem 0.85rem 0.85rem;
  background: #e8ebef;
}

.mnist-collage {
  grid-template-areas:
    "accuracy surface"
    "digits surface";
  grid-template-columns: 1.25fr 0.75fr;
  grid-template-rows: 1fr 0.32fr;
  gap: 0.65rem;
}

.project-collage img {
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  border: 1px solid #c8ced6;
  background: #fff;
  object-fit: var(--image-fit, contain);
  object-position: var(--image-position, center);
}

.collage-accuracy {
  grid-area: accuracy;
}

.collage-digits {
  grid-area: digits;
}

.collage-surface {
  grid-area: surface;
}

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

.experience-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 8rem;
}

.experience-sticky {
  position: sticky;
  top: 130px;
  align-self: start;
}

.experience-sticky > p:last-child {
  margin-top: 2rem;
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline-date {
  color: var(--subtle);
  font: 400 0.6rem/1.5 var(--font-mono);
  text-transform: uppercase;
}

.timeline-meta {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
}

.timeline-logo {
  width: 88px;
  height: 88px;
  border: 1px solid var(--line);
  border-radius: 6px;
  object-fit: contain;
}

.timeline-org {
  margin-bottom: 0.6rem;
  color: var(--accent-bright);
  font: 500 0.62rem var(--font-mono);
  text-transform: uppercase;
}

.timeline-item h3 {
  margin-bottom: 1rem;
  font-size: 1.35rem;
  letter-spacing: -0.035em;
}

.timeline-item div > p:not(.timeline-org),
.timeline-item li {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.75;
}

.timeline-item ul {
  padding-left: 1.1rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.2rem;
}

.about-panel {
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.education-panel {
  grid-row: span 2;
}

.panel-label {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--accent-bright);
  font: 500 0.62rem var(--font-mono);
  text-transform: uppercase;
}

.education-item {
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.education-item:last-child,
.achievement:last-child {
  border-bottom: 0;
}

.education-item span {
  color: var(--subtle);
  font: 400 0.58rem var(--font-mono);
}

.education-entry {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-top: 1.2rem;
}

.education-logo {
  width: 80px;
  height: 80px;
  flex: 0 0 auto;
  padding: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f4f4f2;
  object-fit: contain;
}

.education-entry h3 {
  margin: 0 0 0.7rem;
  font-size: 1.45rem;
}

.education-item p,
.achievement p {
  color: var(--muted);
  line-height: 1.65;
}

.education-item p {
  font-size: 0.82rem;
}

.stack-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.stack-cloud span {
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: #b9c2ce;
  font: 400 0.65rem var(--font-mono);
}

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

.concept-list p {
  margin: 0.4rem 0;
  color: var(--subtle);
  font-size: 0.72rem;
}

.achievement {
  display: grid;
  grid-template-columns: 35px 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.achievement span {
  color: var(--accent-bright);
  font: 400 0.58rem var(--font-mono);
}

.achievement p {
  margin: 0;
  font-size: 0.76rem;
  line-height: 1.5;
}

.achievement b {
  color: var(--text);
}

.closing {
  margin-block: 4rem 8rem;
  padding: 5rem;
  border: 1px solid rgba(124, 169, 232, 0.26);
  border-radius: 8px;
  background: linear-gradient(145deg, #131c28, #0e151e);
}

.closing h2 {
  max-width: 900px;
  margin: 1.2rem 0 1.5rem;
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.065em;
}

.closing > p:not(.eyebrow) {
  color: var(--muted);
}

.closing-actions {
  margin-top: 1.5rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 2rem;
  border-top: 1px solid var(--line);
  color: var(--subtle);
  font: 400 0.62rem var(--font-mono);
}

.site-footer p {
  margin: 0;
}

.site-footer a:hover {
  color: var(--accent-bright);
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3.5rem;
    padding-block: 5rem;
  }

  .profile-card {
    width: 100%;
    max-width: 660px;
  }

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

  .section-heading {
    gap: 2rem;
  }

  .experience-layout {
    gap: 4rem;
  }

  .experience-sticky {
    position: static;
  }

  .project-wide,
  .project-wide.reverse,
  .project-full {
    grid-template-columns: 1fr;
  }

  .project-wide .project-visual,
  .project-wide.reverse .project-visual,
  .project-full .project-visual {
    order: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    border-left: 0;
  }

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

  .education-panel {
    grid-row: auto;
  }
}

@media (max-width: 680px) {
  .shell,
  .site-header-inner {
    width: min(100% - 28px, var(--content-width));
  }

  .site-header-inner {
    height: 68px;
  }

  .identity span {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 0.7rem;
    border: 1px solid var(--line);
    background: #0d141d;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  }

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

  .site-nav a {
    padding: 0.8rem;
  }

  .hero {
    min-height: auto;
    padding-block: 3.5rem;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 10vw, 3rem);
    line-height: 1;
  }

  .hero .eyebrow {
    max-width: 310px;
    line-height: 1.6;
  }

  .hero-intro {
    font-size: 0.95rem;
  }

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

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

  .profile-card {
    padding: 1.5rem;
  }

  .profile-details div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .profile-evidence {
    margin: 1.5rem -1.5rem -1.5rem;
  }

  .section {
    padding-block: 5rem;
  }

  .section-heading {
    margin-bottom: 2.5rem;
  }

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

  .project-card,
  .project-wide,
  .project-full {
    grid-column: auto;
  }

  .project-visual {
    min-height: 290px;
  }

  .image-visual {
    height: 290px;
    min-height: 290px;
  }

  .project-copy {
    padding: 1.5rem;
  }

  .project-copy h3 {
    margin-top: 2.5rem;
  }

  .project-topline {
    flex-direction: column;
    gap: 0.35rem;
  }

  .mini-phone {
    left: 52%;
    transform: translate(-10%, -50%) rotate(3deg);
  }

  .quant-architecture {
    flex-wrap: wrap;
    justify-content: center;
  }

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

  .timeline-meta {
    align-items: flex-start;
    text-align: left;
  }

  .closing {
    margin-bottom: 5rem;
    padding: 3.2rem 1.5rem;
  }

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

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

  .button,
  .nav-cta,
  .menu-button,
  .project-card,
  .site-nav > a {
    transition: none;
  }
}