:root {
  --bg: #0D1117;
  --surface: #141A22;
  --ink: #E6E8EB;
  --muted: #8B96A5;
  --hairline: #232B36;
  --accent: #F2C94C;
  --accent-2: #4FD1C5;
  --mono: 'JetBrains Mono', monospace;
  --display: 'Space Grotesk', sans-serif;
  --body: 'Inter', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
a:hover, a:focus-visible {
  border-color: var(--accent-2);
}
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.scanline-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.012) 0px,
    rgba(255,255,255,0.012) 1px,
    transparent 1px,
    transparent 3px
  );
}

/* ---------- bounding-box corner motif ---------- */
.corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--accent);
  opacity: 0.85;
}
.corner.tl { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.corner.tr { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.corner.bl { bottom: -1px; left: -1px; border-right: none; border-top: none; }
.corner.br { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.bbox {
  position: relative;
  display: inline-block;
  padding: 10px 18px;
}

.bbox-tag .tag-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-transform: lowercase;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 78vh;
  display: flex;
  align-items: center;
  padding: 6vh 6vw;
  border-bottom: 1px solid var(--hairline);
}

.hero-inner {
  max-width: 900px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.hero-text {
  max-width: 620px;
}

.hero-photo-frame {
  position: relative;
  flex-shrink: 0;
  width: 168px;
  height: 168px;
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(15%);
}

.hero-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  margin: 24px 0 4px;
  letter-spacing: -0.01em;
}

.hero-role {
  font-family: var(--display);
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--accent-2);
  margin: 0 0 10px;
  font-weight: 500;
}

.hero-desc {
  font-family: var(--mono);
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 34px;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.hero-links a {
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--ink);
  border-bottom: 1px solid var(--hairline);
}
.hero-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- sections ---------- */
main {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 0 6vw;
}

.section {
  padding: 68px 0;
  border-bottom: 1px solid var(--hairline);
}
.section:last-child { border-bottom: none; }

.section-label {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 28px;
}

.about-text {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  max-width: 68ch;
  color: #D5D9DE;
  white-space: pre-line;
}

/* ---------- experience timeline ---------- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.entry-frame {
  position: relative;
  background: var(--surface);
  padding: 26px 28px;
  border: 1px solid var(--hairline);
}

.entry-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 20px;
}

.entry-head h3 {
  font-family: var(--display);
  font-size: 1.2rem;
  margin: 0;
  font-weight: 600;
}

.entry-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

.entry-org {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent-2);
  margin: 4px 0 14px;
}

.entry-frame ul {
  margin: 0;
  padding-left: 20px;
  color: #C7CCD2;
}
.entry-frame li { margin-bottom: 8px; }
.entry-frame li:last-child { margin-bottom: 0; }

/* ---------- education ---------- */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.edu-item {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: 22px 24px;
}

.edu-item h3 {
  font-family: var(--display);
  font-size: 1.08rem;
  margin: 0 0 6px;
  font-weight: 600;
}

.edu-note {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.85rem;
}

.edu-item .entry-org { margin: 0 0 8px; }

/* ---------- publications ---------- */
.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.pub-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
}

.pub-index {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.pub-text {
  color: #C7CCD2;
  font-size: 0.97rem;
}

/* ---------- skills ---------- */
.skill-group {
  margin-bottom: 26px;
}
.skill-group:last-child { margin-bottom: 0; }

.skill-cat {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 5px 12px;
  border: 1px solid var(--hairline);
  color: #D5D9DE;
  background: var(--surface);
}

/* ---------- footer ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 50px 6vw 60px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.footer-note {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0;
}

/* ---------- motion respect ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .hero { padding: 8vh 6vw; min-height: auto; }
  .hero-inner { flex-direction: column-reverse; align-items: flex-start; }
  .hero-photo-frame { width: 100px; height: 100px; }
  .section { padding: 48px 0; }
  .entry-head { flex-direction: column; align-items: flex-start; }
}