:root {
  --bg: #fbfaf7;
  --text: #1c1b19;
  --text-secondary: #5e5c57;
  --accent: #2b5c8a;
  --border: #e4e1d9;
  --hover: #efece5;
  --badge-bg: #e4edf6;
  --badge-text: #1f4568;
  --award-bg: #f6ead3;
  --award-text: #6b4a12;
  --tag-bg: #efece5;
  --figure-brightness: 1;
  --font-serif: "Newsreader", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}

/* The theme toggle sets data-theme; without a choice the system setting decides. Print always uses the light colours. */
:root[data-theme="light"] { color-scheme: light; }

@media screen and (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #151513;
    --text: #ecebe6;
    --text-secondary: #a9a69e;
    --accent: #8fb6de;
    --border: #2e2d2a;
    --hover: #232220;
    --badge-bg: #1d2a38;
    --badge-text: #b4cfeb;
    --award-bg: #33291a;
    --award-text: #ecc98a;
    --tag-bg: #262522;
    --figure-brightness: 0.88;
  }
}

@media screen {
  :root[data-theme="dark"] {
    --bg: #151513;
    --text: #ecebe6;
    --text-secondary: #a9a69e;
    --accent: #8fb6de;
    --border: #2e2d2a;
    --hover: #232220;
    --badge-bg: #1d2a38;
    --badge-text: #b4cfeb;
    --award-bg: #33291a;
    --award-text: #ecc98a;
    --tag-bg: #262522;
    --figure-brightness: 0.88;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

.page { position: relative; max-width: 760px; margin: 0 auto; padding: 72px 20px 0; }

.theme-toggle { position: absolute; top: 16px; right: 10px; display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; padding: 0; border: 0; border-radius: 50%; background: none; color: var(--text-secondary); cursor: pointer; }
.theme-toggle[hidden] { display: none; }
.theme-toggle:hover { color: var(--accent); background: var(--hover); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-toggle svg { width: 20px; height: 20px; fill: currentColor; }
.theme-toggle .sun, :root[data-theme="dark"] .theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

.intro { display: flex; align-items: center; gap: 28px; }
.portrait { width: 112px; height: 112px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.intro-text { flex: 1; min-width: 0; }
h1 { font-family: var(--font-serif); font-weight: 500; font-size: 40px; line-height: 1.1; letter-spacing: -0.01em; margin: 0; }
.role { margin: 6px 0 8px; font-size: 17px; line-height: 1.4; }
.links { list-style: none; padding: 0; margin: 0 0 0 -9px; display: flex; flex-wrap: wrap; gap: 2px; }
.links a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; color: var(--text-secondary); }
.links a:hover { color: var(--accent); background: var(--hover); }
.links a:focus-visible { border-radius: 50%; }
.links svg { width: 22px; height: 22px; fill: currentColor; }

.lead { font-family: var(--font-serif); font-size: 21px; line-height: 1.45; margin: 32px 0 16px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 24px; margin: 0; font-size: 15px; }
.facts dt { color: var(--text-secondary); }
.facts dd { margin: 0; }

h2 { font-family: var(--font-serif); font-weight: 500; font-size: 26px; line-height: 1.2; margin: 56px 0 20px; }
section p { margin: 0; }

.papers { list-style: none; padding: 0; margin: 0; }
.paper { margin: 0 0 36px; }
.paper-head { display: flex; gap: 24px; align-items: center; }
.paper-meta { flex: 1; min-width: 0; }
.paper p { margin: 4px 0 0; }
.paper .venue { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 6px; }
.badge { font-size: 12.5px; font-weight: 500; line-height: 1.6; padding: 0 8px; border-radius: 4px; background: var(--badge-bg); color: var(--badge-text); }
.badge.award { background: var(--award-bg); color: var(--award-text); }
.paper-title { font-family: var(--font-serif); font-size: 19px; font-weight: 500; line-height: 1.35; color: var(--text); overflow-wrap: anywhere; }
.authors { color: var(--text-secondary); font-size: 14.5px; }
.authors strong { color: var(--text); font-weight: 600; }
.paper .author-note { margin-top: 0; color: var(--text-secondary); font-size: 13px; }
.keywords { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.keywords li { font-size: 12.5px; line-height: 1.6; padding: 0 8px; border-radius: 4px; background: var(--tag-bg); color: var(--text-secondary); }
.tldr { font-size: 15px; line-height: 1.6; }
.paper .tldr { margin-top: 12px; }
.paper .paper-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.paper-links a { font-size: 13.5px; font-weight: 500; line-height: 1; padding: 6px 11px; border: 1px solid var(--border); border-radius: 6px; }
.paper-links a:hover { border-color: var(--accent); text-decoration: none; }
.thumb { position: relative; flex: none; width: 260px; aspect-ratio: 2 / 1; background: #fff; border: 1px solid var(--border); border-radius: 8px; filter: brightness(var(--figure-brightness)); }
.thumb:hover { border-color: var(--accent); }
.thumb img, .thumb video { position: absolute; inset: 6px; width: calc(100% - 12px); height: calc(100% - 12px); object-fit: contain; }
.legend { color: var(--text-secondary); font-size: 14px; }
.legend a { text-decoration: underline; text-underline-offset: 3px; }

.footer { margin-top: 48px; padding: 24px 0 48px; border-top: 1px solid var(--border); color: var(--text-secondary); font-size: 14px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 24px; }
.footer p { margin: 0; }

@media (max-width: 600px) {
  .page { padding-top: 56px; }
  .theme-toggle { top: 8px; }
  .intro { gap: 18px; }
  .portrait { width: 84px; height: 84px; }
  h1 { font-size: 30px; }
  .role { font-size: 15px; margin: 4px 0; }
  .lead { font-size: 19px; margin-top: 24px; }
  .facts { grid-template-columns: 1fr; gap: 0; }
  .facts dd + dt { margin-top: 8px; }
  .paper-head { flex-direction: column; align-items: stretch; gap: 12px; }
  .thumb { order: -1; width: 100%; }
  h2 { margin-top: 44px; }
}

@media (max-width: 360px) {
  .portrait { width: 72px; height: 72px; }
  .links { margin-left: -7px; gap: 0; }
  .links a { width: 36px; height: 36px; }
}

@media print {
  .theme-toggle { display: none; }
}