:root {
  --paper: #f4f2ec;
  --paper-glass: rgba(244, 242, 236, 0.94);
  --ink: #111714;
  --muted: #64706a;
  --line: rgba(17, 23, 20, 0.18);
  --blue: #244cff;
  --acid: #c9ff3f;
  --content: 860px;
  --wide: 1200px;
  --pad: clamp(1.2rem, 4vw, 2.5rem);
  --mono: "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --display: "Manrope", Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--blue); }
::selection { background: var(--acid); color: var(--ink); }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.55rem 0.8rem;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.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;
}

.site-header {
  position: fixed;
  z-index: 20;
  inset: 0 0 auto;
  background: var(--paper-glass);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(12px);
  transition: border-color 160ms ease;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, var(--wide));
  min-height: 62px;
  margin: 0 auto;
  padding: 0 var(--pad);
}
.brand { font-size: 1rem; font-weight: 700; letter-spacing: -0.04em; }
.site-nav { display: flex; align-items: center; gap: clamp(0.9rem, 2vw, 1.4rem); }
.site-nav a { font-size: 0.76rem; color: var(--muted); }
.site-nav a:hover { color: var(--blue); }
.menu-toggle { display: none; border: 0; background: none; }

.page-shell {
  width: min(100%, var(--wide));
  margin: 0 auto;
  padding: 0 var(--pad);
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
  min-height: min(66svh, 540px);
  padding: 5.5rem 0 2rem;
}
.prompt {
  margin: 0 0 0.6rem;
  color: var(--blue);
  font-size: 0.78rem;
}
.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.7rem, 9vw, 5.25rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.055em;
}
.role-line {
  margin: 0.8rem 0 0;
  color: var(--blue);
  font-family: var(--mono);
  font-size: clamp(0.92rem, 1.7vw, 1.12rem);
  font-weight: 500;
}
.role-line span { color: var(--ink); animation: blink 1.05s steps(1, end) infinite; }
.intro { max-width: 720px; margin: 1.35rem 0 0; color: var(--muted); font-size: 0.95rem; }
.intro a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--blue); text-underline-offset: 3px; }
.quick-links { display: flex; flex-wrap: wrap; gap: 0.6rem 1.2rem; margin-top: 1.4rem; }
.quick-links { gap: 0.45rem; }
.quick-links a {
  padding: 0.38rem 0.65rem;
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 0.74rem;
}
.quick-links a:hover { border-color: var(--blue); color: var(--blue); }
.social-links a { color: var(--blue); font-size: 0.8rem; text-decoration: underline; text-underline-offset: 3px; }

.topic-field { align-self: center; }
.topic-field > p { margin: 0.7rem 0 0; color: var(--muted); font-size: 0.66rem; text-align: center; }
.topic-cloud {
  display: flex;
  align-content: center;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.3rem 0.75rem;
  min-height: 155px;
  padding: 0.75rem 1rem;
  color: var(--ink);
  line-height: 1.05;
  text-align: center;
}
.topic-cloud span { display: inline-block; white-space: nowrap; }
.topic-xs { color: rgba(100, 112, 106, 0.55); font-size: 0.62rem; }
.topic-sm { color: var(--muted); font-size: 0.82rem; }
.topic-md { font-size: 1.05rem; font-weight: 500; }
.topic-lg { font-size: 1.45rem; font-weight: 600; }
.topic-cloud .topic-xl { color: var(--blue); font-size: 1.8rem; font-weight: 700; }

.terminal-section {
  width: min(100%, var(--content));
  margin-inline: auto;
  padding: 2.2rem 0;
  scroll-margin-top: 62px;
}
.terminal-rule { width: 100%; margin-bottom: 0.85rem; border-top: 1px solid var(--line); }
.terminal-section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.6rem, 4vw, 2.15rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.05em;
}
.focus-list { margin: 0; padding: 0; list-style: none; }
.focus-list li { display: grid; grid-template-columns: 18px 1fr; gap: 0.4rem; margin-bottom: 0.7rem; }
.focus-list li > span { color: var(--blue); }
.focus-list p { margin: 0; color: var(--muted); }
.focus-list strong { color: var(--ink); }
blockquote {
  margin: 1.35rem 0 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--acid);
  background: rgba(201, 255, 63, 0.12);
  color: var(--muted);
  font-size: 0.86rem;
}

.section-title-row { display: flex; justify-content: space-between; align-items: baseline; gap: 1.5rem; }
.section-title-row > a { color: var(--blue); font-size: 0.75rem; white-space: nowrap; }
.publication-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.publication-list li {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}
.publication-list time { padding-top: 0.08rem; color: var(--blue); font-size: 0.7rem; }
.paper-title { display: inline; font-size: 0.92rem; font-weight: 600; line-height: 1.45; }
.paper-title::after { content: " ↗"; color: var(--blue); }
.publication-list p { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.72rem; line-height: 1.55; }

.project-list { border-top: 1px solid var(--line); }
.project-list article { padding: 0.95rem 0; border-bottom: 1px solid var(--line); }
.project-heading { display: flex; align-items: center; gap: 0.8rem; }
.project-heading code { color: var(--blue); font-family: var(--mono); font-size: 0.9rem; font-weight: 600; }
.project-heading span { padding: 0.08rem 0.45rem; background: var(--acid); color: var(--ink); font-size: 0.58rem; font-weight: 700; text-transform: uppercase; }
.project-list p { max-width: 720px; margin: 0.55rem 0 0; color: var(--muted); font-size: 0.8rem; }

.contact > p:not(.prompt):not(.address) { max-width: 690px; color: var(--muted); }
.email { display: inline-block; margin: 1rem 0 1.3rem; color: var(--blue); font-size: clamp(1rem, 3vw, 1.35rem); text-decoration: underline; text-underline-offset: 5px; }
.email span { color: var(--ink); animation: blink 1.05s steps(1, end) infinite; }
.address { color: var(--muted); font-size: 0.74rem; }
.social-links { display: flex; flex-wrap: wrap; gap: 0.6rem 1.1rem; margin-top: 1.5rem; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  width: min(100%, var(--wide));
  margin: 1rem auto 0;
  padding: 2rem var(--pad) 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.68rem;
}
.site-footer p { margin: 0.25rem 0; }
.site-footer a { color: var(--blue); }
.site-footer .copyright { color: rgba(100, 112, 106, 0.65); }

.reveal { opacity: 0; transform: translateY(12px); transition: opacity 500ms ease, transform 500ms ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
@keyframes blink { 0%, 48% { opacity: 1; } 49%, 100% { opacity: 0; } }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: 0; gap: 1.4rem; padding: 6rem 0 2rem; }
  .topic-field { width: min(100%, 540px); }
  .topic-cloud { min-height: 0; padding: 1rem 0; justify-content: flex-start; text-align: left; }
  .topic-field > p { text-align: left; }
}

@media (max-width: 720px) {
  .menu-toggle { display: grid; gap: 6px; padding: 10px 0 10px 10px; }
  .menu-toggle span:not(.sr-only) { display: block; width: 22px; height: 1px; background: var(--ink); }
  .site-nav {
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.8rem var(--pad) 1.2rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }
  .site-nav.open { display: flex; }
  .site-nav a { width: 100%; padding: 0.48rem 0; }
  .terminal-section { padding: 1.9rem 0; }
  .section-title-row { align-items: flex-start; flex-direction: column; gap: 0; }
  .publication-list li { grid-template-columns: 45px 1fr; gap: 0.7rem; }
  .site-footer { flex-direction: column; gap: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}