:root {
  --bg: #ffffff;
  --bg2: #ffffff;
  --card: rgba(14, 19, 36, 0.05);
  --card2: rgba(14, 19, 36, 0.08);
  --text: rgba(14, 19, 36, 0.92);
  --muted: rgba(14, 19, 36, 0.68);
  --muted2: rgba(14, 19, 36, 0.55);
  --border: rgba(14, 19, 36, 0.12);
  --accent: #7c5cff;
  --accent2: #2ee9a6;
  --shadow: 0 18px 60px rgba(14, 19, 36, 0.14);
  --radius: 16px;
  --radius2: 22px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color: var(--text);
  background: linear-gradient(180deg, #f6f7fb, #ffffff 40%, #ffffff);
  line-height: 1.55;
}

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.muted {
  color: var(--muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 14px;
  top: 12px;
  z-index: 999;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  transform: translateY(-140%);
  transition: transform 180ms ease;
}
.skip-link:focus {
  transform: translateY(0);
}

.is-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg2) 72%, transparent);
  border-bottom: 1px solid var(--border);
}

.top-announce {
  border-bottom: 1px solid var(--border);
  background: #f6f7fb;
}

.top-announce-inner {
  min-height: 40px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 6px 0;
}

.top-announce-track {
  display: flex;
  width: max-content;
  flex-wrap: nowrap;
  animation: top-announce-marquee 26s linear infinite;
  will-change: transform;
}

.top-announce-item {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  padding-right: 40px;
  white-space: nowrap;
}

.top-announce:hover .top-announce-track,
.top-announce:focus-within .top-announce-track {
  animation-play-state: paused;
}

@keyframes top-announce-marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.top-announce-date {
  font-weight: 900;
  font-size: 12px;
  color: var(--muted2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.top-announce-text {
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
}

.top-announce-dot {
  color: var(--muted2);
  font-weight: 900;
}

.top-announce-link {
  font-weight: 900;
  font-size: 13px;
  color: color-mix(in oklab, var(--accent) 75%, var(--text));
  text-decoration: none;
}

.top-announce-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .top-announce-inner {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .top-announce-track {
    animation: none;
    width: max-content;
  }
}

@media (max-width: 520px) {
  .top-announce-inner {
    min-height: 34px;
    padding: 4px 0;
  }
  .top-announce-track {
    animation-duration: 18s;
  }
  .top-announce-item {
    gap: 8px;
    padding-right: 28px;
  }
  .top-announce-date,
  .top-announce-dot {
    display: none;
  }
  .top-announce-text,
  .top-announce-link {
    font-size: 12.5px;
  }
}

.header-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 18%, transparent);
}

.nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 12px;
  width: 44px;
  height: 44px;
  cursor: pointer;
}

.nav-toggle-bars {
  width: 18px;
  height: 12px;
  display: inline-block;
  background:
    linear-gradient(var(--text), var(--text)) 0 0 / 100% 2px no-repeat,
    linear-gradient(var(--text), var(--text)) 0 50% / 100% 2px no-repeat,
    linear-gradient(var(--text), var(--text)) 0 100% / 100% 2px no-repeat;
  opacity: 0.86;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0;
  margin: 0;
}

.nav-links a {
  display: inline-flex;
  padding: 10px 10px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 600;
}
.nav-links a:hover {
  color: var(--text);
  background: var(--card);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 45%, var(--accent2)));
  color: white;
  box-shadow: 0 18px 50px color-mix(in oklab, var(--accent) 22%, transparent);
}
.btn-secondary {
  background: var(--card);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}

.btn-email {
  gap: 10px;
  padding-inline: 14px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.email-icon {
  width: 16px;
  height: 16px;
  opacity: 0.85;
}

.email-text {
  font-variant-numeric: tabular-nums;
}

.email-inline {
  font-variant-numeric: tabular-nums;
}

/* Hero */
.hero {
  padding: 56px 0 18px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 360px);
  gap: 16px;
  align-items: start;
}

.pill {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  color: var(--muted);
  font-weight: 800;
  font-size: 13px;
  margin: 0 0 14px;
}

.hero-title {
  font-size: clamp(34px, 4vw, 54px);
  letter-spacing: -0.03em;
  line-height: 1.03;
  margin: 0 0 12px;
}

.accent {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.75;
  max-width: 70ch;
  margin: 0 0 18px;
  white-space: pre-line;
  text-wrap: pretty;
  hyphens: auto;
}

.hero-line {
  margin: -6px 0 18px;
  font-weight: 700;
}

.hero-cta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.hero-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}

.icon-links .icon-link {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
}
.icon-links .icon-link:hover {
  color: var(--text);
  background: color-mix(in oklab, var(--card2) 86%, transparent);
}
.icon {
  width: 20px;
  height: 20px;
}

.hero-right {
  justify-self: end;
}

.card {
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  box-shadow: var(--shadow);
}

.avatar-card {
  padding: 0;
  overflow: hidden;
}
.avatar {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: 50% 20%;
  display: block;
  border-radius: var(--radius2);
}

/* Sections */
.section {
  padding: 44px 0;
}
.section-alt {
  background: #f6f7fb;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}
.section-head h2 {
  margin: 0;
  letter-spacing: -0.02em;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 80ch;
}

.card-title {
  font-size: 14px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted2);
  margin: 0 0 12px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.about-card {
  padding: 18px;
}
.skill-groups {
  display: grid;
  gap: 14px;
}
.skill-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted2);
  font-weight: 900;
}

.stack {
  display: grid;
  gap: 14px;
}

.mini {
  padding: 14px 14px;
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
  will-change: transform;
}
.mini:hover,
.mini:focus-within {
  transform: translateY(-6px) translateX(2px);
  border-color: color-mix(in oklab, var(--accent) 45%, var(--border));
  background: color-mix(in oklab, var(--card2) 88%, transparent);
  box-shadow: 0 26px 70px rgba(14, 19, 36, 0.18);
}
.mini-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.mini-title {
  font-weight: 800;
  letter-spacing: -0.02em;
}
.mini-meta {
  color: var(--muted2);
  font-weight: 900;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.mini p {
  margin: 8px 0 0;
  color: var(--muted);
}
.mini-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.mini-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card2) 78%, transparent);
  color: var(--muted);
  font-weight: 900;
  font-size: 12px;
}
.mini-link:hover {
  color: var(--text);
  background: color-mix(in oklab, var(--card2) 92%, transparent);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  color: var(--muted);
  font-weight: 700;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease;
}
.chip:hover {
  transform: translateY(-3px);
  color: var(--text);
  border-color: color-mix(in oklab, var(--accent) 40%, var(--border));
  background: color-mix(in oklab, var(--card2) 90%, transparent);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

/* Timeline */
.timeline {
  display: grid;
  gap: 18px;
}
.t-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  align-items: start;
}
.t-rail {
  display: grid;
  justify-items: center;
}
.t-dot {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 2px solid color-mix(in oklab, var(--accent) 70%, var(--border));
  background: color-mix(in oklab, var(--bg2) 78%, transparent);
  box-shadow: 0 16px 40px color-mix(in oklab, var(--accent) 18%, transparent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: color-mix(in oklab, var(--text) 78%, var(--muted));
  overflow: hidden;
}
.t-dot-has-logo {
  background: rgba(255, 255, 255, 0.92);
  border-color: color-mix(in oklab, var(--accent) 55%, var(--border));
}
.t-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6px;
  filter: saturate(1.06) contrast(1.08);
}
.t-line {
  width: 2px;
  height: 100%;
  min-height: 22px;
  margin-top: 10px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--border) 85%, transparent);
}
.t-item[data-last="true"] .t-line {
  display: none;
}
.t-card {
  padding: 18px 18px;
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  box-shadow: var(--shadow);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
  will-change: transform;
}
.t-card:hover {
  transform: translateY(-6px) translateX(2px);
  border-color: color-mix(in oklab, var(--accent) 45%, var(--border));
  background: color-mix(in oklab, var(--card2) 88%, transparent);
  box-shadow: 0 26px 70px rgba(14, 19, 36, 0.18);
}
.t-pill {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card2) 80%, transparent);
  color: color-mix(in oklab, var(--accent2) 65%, var(--muted));
  font-weight: 900;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.t-title {
  margin: 0;
  letter-spacing: -0.02em;
  font-size: 20px;
}
.t-org {
  margin-top: 8px;
  font-weight: 900;
  color: color-mix(in oklab, var(--text) 88%, var(--muted));
}
.t-meta {
  margin-top: 6px;
  color: var(--muted2);
  font-weight: 700;
}
.t-bullets {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 6px;
}

/* Publications */
.pub-card {
  display: grid;
  grid-template-columns: 6px 1fr;
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}
.pub-card:hover {
  transform: translateY(-6px) translateX(2px);
  border-color: color-mix(in oklab, var(--accent) 45%, var(--border));
  background: color-mix(in oklab, var(--card2) 88%, transparent);
  box-shadow: 0 26px 70px rgba(14, 19, 36, 0.18);
}
.pub-rail {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--accent) 72%, transparent),
    color-mix(in oklab, var(--accent2) 55%, transparent)
  );
}
.pub-body {
  padding: 18px;
  display: grid;
  gap: 10px;
}
.pub-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.pub-pill {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card2) 82%, transparent);
  color: color-mix(in oklab, var(--accent) 70%, var(--text));
  font-weight: 900;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.pub-title {
  margin: 0;
  letter-spacing: -0.02em;
  font-size: 20px;
  line-height: 1.25;
}
.pub-authors {
  margin: 0;
  color: var(--muted2);
  font-weight: 800;
}
.pub-venue {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 800;
}
.pub-venue-icon {
  width: 16px;
  height: 16px;
  opacity: 0.9;
}
.pub-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.pub-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card2) 82%, transparent);
  color: var(--muted);
  font-weight: 900;
  font-size: 13px;
}
.pub-btn:hover {
  color: var(--text);
  background: color-mix(in oklab, var(--card2) 95%, transparent);
}

/* Contact */
.contact-card {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 16px;
  padding: 18px;
}
.contact-title {
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}
.contact-links {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 8px;
}
.contact-links a {
  color: var(--muted);
  font-weight: 900;
}
.contact-form {
  display: grid;
  gap: 12px;
}
label span {
  display: block;
  font-size: 13px;
  font-weight: 900;
  color: var(--muted2);
  margin-bottom: 6px;
}
input,
textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 88%, transparent);
  color: var(--text);
  outline: none;
}
input:focus,
textarea:focus {
  border-color: color-mix(in oklab, var(--accent) 55%, var(--border));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 18%, transparent);
}
.form-hint {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.site-footer {
  padding: 24px 0 38px;
}
.footer-inner {
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .contact-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .nav-links {
    position: absolute;
    top: 68px;
    right: 20px;
    left: 20px;
    padding: 12px;
    background: color-mix(in oklab, var(--bg2) 92%, transparent);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .nav-links[data-open="true"] {
    display: flex;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mini,
  .mini:hover,
  .chip,
  .chip:hover,
  .t-card,
  .t-card:hover,
  .pub-card,
  .pub-card:hover {
    transition: none;
    transform: none;
  }
}