:root {
  color-scheme: dark light;
  --bg: #0b0d12;
  --bg-soft: #11151d;
  --surface: #151a22;
  --surface-2: #1b222d;
  --ink: #f5f7fb;
  --muted: #aab4c3;
  --faint: #737f91;
  --line: rgba(255, 255, 255, 0.13);
  --accent: #28d5c3;
  --accent-2: #8fe9df;
  --accent-soft: rgba(40, 213, 195, 0.14);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --radius: 8px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SF Mono", "Cascadia Code", Consolas, monospace;
  --ease: cubic-bezier(0.2, 0, 0, 1);
}

body[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f8fb;
  --bg-soft: #eef2f6;
  --surface: #ffffff;
  --surface-2: #f4f7fa;
  --ink: #111827;
  --muted: #4b5563;
  --faint: #6b7280;
  --line: rgba(17, 24, 39, 0.12);
  --accent: #087f73;
  --accent-2: #0f766e;
  --accent-soft: rgba(8, 127, 115, 0.11);
  --shadow: 0 22px 65px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(40, 213, 195, 0.07), transparent 360px),
    var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

code {
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 0.94em;
}

:focus-visible {
  outline: 3px solid rgba(40, 213, 195, 0.45);
  outline-offset: 4px;
}

.skip-link {
  background: var(--accent);
  color: #04110f;
  font-weight: 800;
  left: 16px;
  padding: 10px 14px;
  position: fixed;
  top: 12px;
  transform: translateY(-150%);
  z-index: 100;
}

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

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 18, 0.78);
  backdrop-filter: blur(18px);
}

body[data-theme="light"] .site-header {
  background: rgba(247, 248, 251, 0.82);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-weight: 760;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  background: var(--accent-soft);
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 13px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a,
.theme-toggle,
.menu-toggle {
  min-height: 42px;
}

.nav-links a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  padding: 10px 11px;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--accent-soft);
  color: var(--accent-2);
}

.nav-cta {
  border: 1px solid var(--line);
}

.theme-toggle,
.menu-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}

.theme-toggle {
  width: 42px;
  display: grid;
  place-items: center;
}

.theme-icon {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 2px solid currentColor;
  box-shadow: inset 6px -3px 0 var(--accent);
}

.menu-toggle {
  display: none;
  width: 44px;
  position: relative;
}

.menu-toggle span {
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), top 0.2s var(--ease);
}

.menu-toggle span:first-child {
  top: 15px;
}

.menu-toggle span:last-child {
  top: 25px;
}

.menu-open .menu-toggle span:first-child {
  top: 20px;
  transform: rotate(45deg);
}

.menu-open .menu-toggle span:last-child {
  top: 20px;
  transform: rotate(-45deg);
}

.section {
  padding: 104px 0;
  scroll-margin-top: 86px;
}

.hero {
  min-height: calc(100vh - 68px);
  display: grid;
  align-items: center;
  padding: 72px 0 92px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(340px, 0.94fr);
  gap: 54px;
  align-items: center;
}

.eyebrow,
.case-number,
.time {
  margin: 0 0 14px;
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 8px;
  font-size: clamp(3rem, 9vw, 6.8rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-role {
  margin-bottom: 24px;
  max-width: 760px;
  color: var(--ink);
  font-size: clamp(2.2rem, 6.4vw, 5.6rem);
  font-weight: 790;
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.1vw, 1.36rem);
}

.cred-row,
.tag-row,
.button-row,
.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.cred-row {
  margin: 28px 0 32px;
}

.cred-row span,
.tag-row span {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
  padding: 8px 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-weight: 750;
  padding: 11px 15px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

body[data-theme="dark"] .button:not(.primary) {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line);
}

.button:hover {
  transform: translateY(-2px);
  border-color: rgba(40, 213, 195, 0.55);
  color: var(--accent-2);
}

.button.primary {
  border-color: transparent;
  background: var(--accent);
  color: #04110f;
}

.button.primary:hover {
  color: #04110f;
  background: var(--accent-2);
}

.button.ghost {
  background: transparent;
}

body[data-theme="dark"] .button.ghost {
  background: rgba(21, 26, 34, 0.46);
}

.button.is-disabled {
  opacity: 0.55;
  pointer-events: none;
}

.system-panel {
  position: relative;
  min-height: 560px;
  padding: 34px;
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), transparent),
    var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.signal-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.22;
  mask-image: linear-gradient(180deg, #000, transparent);
}

.flow-node {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 2px 14px;
  align-items: center;
  border: 1px solid var(--line);
  background: rgba(11, 13, 18, 0.78);
  padding: 17px;
  animation: nodePulse 8s infinite;
}

body[data-theme="light"] .flow-node {
  background: rgba(255, 255, 255, 0.82);
}

.flow-node:nth-of-type(4) { animation-delay: 1.4s; }
.flow-node:nth-of-type(6) { animation-delay: 2.8s; }
.flow-node:nth-of-type(8) { animation-delay: 4.2s; }
.flow-node:nth-of-type(10) { animation-delay: 5.6s; }

.flow-node span {
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--accent-soft);
  color: var(--accent-2);
  font-family: var(--mono);
  font-weight: 800;
}

.flow-node strong {
  font-size: 18px;
}

.flow-node small {
  color: var(--muted);
}

.flow-line {
  position: relative;
  z-index: 1;
  width: 1px;
  height: 28px;
  margin-left: 38px;
  background: linear-gradient(var(--accent), transparent);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading h2,
.sticky-copy h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.sticky-copy p:not(.eyebrow),
.subhead p {
  color: var(--muted);
  font-size: 1.03rem;
}

.case-stack {
  display: grid;
  gap: 22px;
}

.case-card,
.current-card,
.now-card,
.research-card,
.resume-card,
.contact-card,
.timeline-item,
.mini-card,
.skill-card,
.education-card,
.credential,
.journey-step,
.grad-card {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}

.case-card {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 28px;
  padding: 28px;
  overflow: hidden;
}

.case-card.featured {
  min-height: 560px;
}

.case-copy h3,
.current-card h3,
.research-card h3 {
  margin-bottom: 12px;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.case-copy > p:not(.case-number),
.current-card p,
.research-card p,
.timeline-item p,
.mini-card p,
.skill-card p,
.education-card p,
.credential p,
.journey-step p,
.contact-card p,
.resume-card p,
.writing-note p {
  color: var(--muted);
}

.case-list,
.research-details {
  display: grid;
  gap: 12px;
  margin: 22px 0;
}

.case-list div,
.research-details div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
}

dt {
  color: var(--ink);
  font-weight: 800;
}

dd {
  margin: 0;
  color: var(--muted);
}

.tag-row {
  margin-bottom: 24px;
}

.visual-card {
  position: relative;
  min-height: 360px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  overflow: hidden;
}

.data-visual {
  padding: 24px;
}

.metric-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  z-index: 2;
}

.metric-strip span {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  padding: 8px 10px;
}

.chart-bars {
  position: absolute;
  right: 24px;
  bottom: 24px;
  left: 24px;
  height: 48%;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  align-items: end;
  gap: 12px;
}

.chart-bars i {
  height: var(--h);
  background: linear-gradient(180deg, var(--accent), rgba(40, 213, 195, 0.18));
  transform-origin: bottom;
  animation: barRise 1.1s var(--ease) both;
}

.map-grid {
  position: absolute;
  inset: 92px 24px auto 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
}

.map-grid span {
  height: 56px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.screenshot-card {
  display: grid;
  place-items: center;
  padding: 12px;
}

.screenshot-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  transition: transform 0.35s var(--ease);
}

.case-card:hover .screenshot-card img,
.grad-card:hover img {
  transform: scale(1.025);
}

.rag-diagram,
.platform-flow {
  display: grid;
  gap: 10px;
}

.rag-diagram {
  padding: 24px;
  align-content: center;
}

.rag-diagram span,
.platform-flow span {
  position: relative;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 750;
  padding: 12px 14px;
}

.rag-diagram span::after,
.platform-flow span::after {
  content: "";
  position: absolute;
  left: 22px;
  bottom: -11px;
  width: 1px;
  height: 10px;
  background: var(--accent);
}

.rag-diagram span:last-child::after,
.platform-flow span:last-child::after {
  display: none;
}

.more-projects {
  margin-top: 56px;
}

.subhead {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}

.subhead h3 {
  margin-bottom: 0;
  font-size: 1.6rem;
}

.project-grid,
.skills-grid,
.education-grid,
.credential-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.mini-card,
.skill-card,
.education-card,
.credential,
.journey-step {
  padding: 20px;
}

.mini-card h4,
.skill-card h3,
.education-card h3,
.credential h3,
.journey-step strong,
.writing-note h3 {
  display: block;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.mini-card a,
.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--accent-2);
  font-weight: 800;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(0, 1.14fr);
  gap: 46px;
  align-items: start;
}

.sticky-copy {
  position: sticky;
  top: 100px;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  padding: 26px;
}

.timeline-item h3 {
  font-size: 1.55rem;
  margin-bottom: 10px;
}

ul {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

li + li {
  margin-top: 8px;
}

.current-section,
.resume-section {
  background: var(--bg-soft);
}

.current-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 18px;
}

.current-card,
.now-card,
.research-card,
.resume-card,
.contact-card {
  padding: 30px;
}

.platform-flow {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 24px;
}

.platform-flow span::after {
  top: 50%;
  left: auto;
  right: -10px;
  bottom: auto;
  width: 10px;
  height: 1px;
}

.research-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
}

.writing-note {
  margin-top: 16px;
  border-left: 3px solid var(--accent);
  padding: 10px 0 10px 18px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 44px;
  align-items: center;
}

.about-grid h2 {
  font-size: clamp(2rem, 4.6vw, 3.3rem);
  line-height: 1;
}

.about-copy {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 680px;
}

.grad-card {
  margin: 0;
  overflow: hidden;
}

.grad-card img {
  aspect-ratio: 1;
  height: auto;
  object-fit: cover;
  transition: transform 0.35s var(--ease);
}

.grad-card figcaption {
  padding: 12px 14px;
  color: var(--muted);
  font-size: 13px;
}

.journey-wrap {
  margin-top: 64px;
}

.journey-rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.journey-step span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 800;
}

.education-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.credential-grid {
  margin-bottom: 18px;
}

.resume-card,
.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.resume-card > div,
.contact-card > p {
  max-width: 700px;
}

.contact-card {
  display: block;
  text-align: center;
}

.contact-card h2 {
  margin-bottom: 10px;
  font-size: clamp(2.2rem, 5vw, 4.3rem);
  line-height: 1;
}

.contact-card p {
  margin-left: auto;
  margin-right: auto;
}

.contact-actions {
  justify-content: center;
  margin-top: 26px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  color: var(--muted);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.62s var(--ease), transform 0.62s var(--ease);
}

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

@keyframes nodePulse {
  0%, 18%, 100% {
    border-color: var(--line);
    box-shadow: none;
  }
  8% {
    border-color: rgba(40, 213, 195, 0.7);
    box-shadow: 0 0 0 4px var(--accent-soft);
  }
}

@keyframes barRise {
  from { transform: scaleY(0.2); opacity: 0.35; }
  to { transform: scaleY(1); opacity: 1; }
}

@media (max-width: 980px) {
  .container {
    width: min(100% - 32px, 760px);
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    inset: 68px 0 auto 0;
    display: grid;
    gap: 0;
    padding: 16px;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    transform: translateY(-120%);
    transition: transform 0.25s var(--ease);
  }

  .menu-open .nav-links {
    transform: translateY(0);
  }

  .nav-links a,
  .theme-toggle {
    width: 100%;
    justify-content: flex-start;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid,
  .case-card,
  .split-layout,
  .current-grid,
  .research-card,
  .about-grid,
  .resume-card {
    grid-template-columns: 1fr;
  }

  .system-panel {
    min-height: auto;
  }

  .project-grid,
  .skills-grid,
  .credential-grid,
  .journey-rail,
  .platform-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sticky-copy {
    position: static;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 460px);
  }

  .section {
    padding: 72px 0;
  }

  .hero {
    padding-top: 48px;
  }

  .brand {
    font-size: 14px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .hero-role {
    font-size: clamp(2.1rem, 13vw, 4rem);
  }

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

  .system-panel,
  .case-card,
  .current-card,
  .now-card,
  .research-card,
  .resume-card,
  .contact-card,
  .timeline-item {
    padding: 20px;
  }

  .case-list div,
  .research-details div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .visual-card {
    min-height: 300px;
  }

  .project-grid,
  .skills-grid,
  .education-grid,
  .credential-grid,
  .journey-rail,
  .platform-flow {
    grid-template-columns: 1fr;
  }

  .subhead,
  .footer-row {
    display: block;
  }

  .platform-flow span::after {
    top: auto;
    left: 22px;
    right: auto;
    bottom: -11px;
    width: 1px;
    height: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

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