:root {
  --bg: #f4f7fb;
  --bg-alt: #eef3f9;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --text: #0f172a;
  --muted: #51607a;
  --line: rgba(15, 23, 42, 0.08);
  --primary: #2f5cff;
  --primary-dark: #2447c7;
  --accent: #0b7285;
  --shadow: 0 18px 60px rgba(15, 23, 42, 0.10);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(circle at top left, rgba(47, 92, 255, 0.10), transparent 28%),
    radial-gradient(circle at top right, rgba(11, 114, 133, 0.10), transparent 22%),
    linear-gradient(180deg, #f9fbfe 0%, var(--bg) 100%);
}

img { display: block; max-width: 100%; }
.container { width: min(1150px, calc(100% - 32px)); margin: 0 auto; }
.page-shell { position: relative; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(244, 247, 251, 0.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 0; }
.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; color: inherit; }
.brand-mark {
  display: grid; place-items: center; width: 46px; height: 46px; border-radius: 16px; color: white;
  font-weight: 800; letter-spacing: -0.03em; background: linear-gradient(135deg, var(--primary), #7b5cff);
  box-shadow: 0 12px 24px rgba(47, 92, 255, 0.28);
}
.brand-text { display: grid; gap: 1px; }
.brand-text strong { font-size: 1rem; letter-spacing: -0.03em; }
.brand-text small { color: var(--muted); font-size: 0.86rem; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { text-decoration: none; color: var(--muted); font-weight: 600; transition: color 0.2s ease; }
.nav a:hover { color: var(--text); }
.menu-btn { display: none; border: 1px solid var(--line); background: var(--surface-strong); border-radius: 14px; padding: 10px 12px; font: inherit; box-shadow: var(--shadow); }
.hero { padding: 64px 0 32px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 28px; align-items: center; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; background: rgba(47, 92, 255, 0.10); color: var(--primary-dark); font-size: 0.86rem; font-weight: 700; letter-spacing: 0.01em; }
h1 { margin: 18px 0 16px; font-size: clamp(2.8rem, 6vw, 5.6rem); line-height: 0.98; letter-spacing: -0.06em; }
h2 { margin: 14px 0 14px; font-size: clamp(1.7rem, 3vw, 2.5rem); line-height: 1.08; letter-spacing: -0.04em; }
h3 { margin: 0 0 8px; font-size: 1.15rem; line-height: 1.25; }
.lead { max-width: 62ch; color: var(--muted); font-size: 1.08rem; }
.muted-copy { color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 13px 18px; border-radius: 16px; text-decoration: none; border: 1px solid transparent; font-weight: 700; cursor: pointer; transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: linear-gradient(135deg, var(--primary), #5c7cff); color: white; box-shadow: 0 14px 24px rgba(47, 92, 255, 0.22); }
.btn.primary:hover { background: linear-gradient(135deg, var(--primary-dark), #4e6df0); }
.btn.secondary { background: var(--surface-strong); color: var(--text); border-color: var(--line); }
.btn.full-width { width: 100%; }
.inline-btn { width: fit-content; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-badges span { padding: 8px 12px; border-radius: 999px; background: rgba(255, 255, 255, 0.75); border: 1px solid var(--line); color: var(--muted); font-weight: 600; }
.hero-media { display: grid; grid-template-columns: 1.05fr 0.85fr; gap: 16px; align-items: stretch; }
.media-card, .card, .publication, .fact-card, .gallery-card, .contact-form, .list-panel, .cv-card { background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.media-card { position: relative; overflow: hidden; border-radius: 30px; min-height: 320px; }
.media-card-large { grid-row: span 2; min-height: 690px; }
.media-card-top, .media-card-bottom { min-height: 330px; }
.media-card img, .gallery-card img { width: 100%; height: 100%; object-fit: cover; }
.media-card figcaption, .gallery-card figcaption { position: absolute; left: 16px; bottom: 16px; padding: 8px 12px; border-radius: 999px; background: rgba(15, 23, 42, 0.60); color: white; font-size: 0.9rem; backdrop-filter: blur(6px); }
.media-card-large img { object-position: center 18%; }
.media-card-top img { object-position: center 25%; }
.media-card-bottom img { object-position: center 16%; }
.media-card.image-missing { background: linear-gradient(135deg, rgba(47,92,255,0.35), rgba(11,114,133,0.35)); }
.media-card.image-missing img { display: none; }
.media-card.image-missing::before {
  content: "Image unavailable"; position: absolute; inset: 0; display: grid; place-items: center; color: white; font-weight: 800; letter-spacing: -0.02em; background: linear-gradient(135deg, rgba(15,23,42,0.25), rgba(15,23,42,0.40));
}
.section { padding: 58px 0; }
.panel { background: rgba(255, 255, 255, 0.35); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-heading { display: grid; gap: 4px; margin-bottom: 24px; }
.about-grid, .publications-grid, .contact-grid, .cv-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 28px; align-items: start; }
.about-grid p, .publications-grid p, .contact-copy p { color: var(--muted); max-width: 65ch; }
.fact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.fact-card, .publication { border-radius: 24px; padding: 22px; }
.fact-card strong, .publication .pub-type, .card-index { display: inline-flex; align-items: center; justify-content: center; margin-bottom: 12px; width: fit-content; min-width: 42px; padding: 6px 10px; border-radius: 999px; background: rgba(47, 92, 255, 0.10); color: var(--primary-dark); font-weight: 800; letter-spacing: -0.02em; }
.fact-card span, .publication p, .card p, .contact-points div span { color: var(--muted); }
.cards { display: grid; gap: 16px; }
.three-up { grid-template-columns: repeat(3, 1fr); }
.four-up { grid-template-columns: repeat(4, 1fr); }
.card { border-radius: 26px; padding: 24px; }
.card ul { margin: 0; padding-left: 18px; color: var(--muted); }
.card li + li { margin-top: 10px; }
.card-index { margin-bottom: 16px; }
.accent-card { background: linear-gradient(180deg, rgba(255,255,255,0.82), rgba(255,255,255,0.72)), linear-gradient(135deg, rgba(47, 92, 255, 0.10), rgba(11, 114, 133, 0.08)); }
.publication-grid { display: grid; gap: 18px; }
.list-columns { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.list-panel { border-radius: 28px; padding: 18px; }
.list-panel-head { display: flex; justify-content: space-between; gap: 16px; align-items: baseline; margin-bottom: 12px; }
.list-panel-head span { color: var(--muted); font-size: 0.9rem; }
.scroll-list { max-height: 360px; overflow-y: auto; padding-right: 6px; display: grid; gap: 12px; }
.scroll-list::-webkit-scrollbar { width: 10px; }
.scroll-list::-webkit-scrollbar-thumb { background: rgba(15, 23, 42, 0.16); border-radius: 999px; }
.list-item { border: 1px solid var(--line); border-radius: 20px; padding: 16px; background: rgba(255,255,255,0.72); }
.list-item strong { display: inline-block; margin-bottom: 6px; color: var(--primary-dark); }
.list-item p { margin: 0; color: var(--text); }
.cv-card { border-radius: 28px; padding: 24px; }
.cv-card ul { margin: 0; padding-left: 18px; color: var(--muted); }
.cv-card li + li { margin-top: 10px; }
.gallery-grid { display: grid; gap: 22px; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery-card { position: relative; overflow: hidden; border-radius: 28px; min-height: 360px; }
.contact-section { padding-bottom: 72px; }
.contact-points { display: grid; gap: 16px; margin-top: 26px; }
.contact-points div { padding: 16px 18px; border-radius: 22px; background: rgba(255, 255, 255, 0.70); border: 1px solid var(--line); }
.contact-points div span { display: block; font-size: 0.88rem; margin-bottom: 2px; }
.contact-points div strong { font-size: 1.02rem; }
.contact-form { position: relative; display: grid; gap: 12px; padding: 24px; border-radius: 28px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
input, textarea, select { width: 100%; padding: 13px 14px; border-radius: 16px; border: 1px solid rgba(15, 23, 42, 0.10); font: inherit; background: white; color: var(--text); }
input:focus, textarea:focus, select:focus { outline: 3px solid rgba(47, 92, 255, 0.16); border-color: rgba(47, 92, 255, 0.35); }
textarea { resize: vertical; min-height: 160px; }
.honeypot { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin: 0; min-height: 1.4em; color: var(--muted); }
.footer { padding: 18px 0 36px; color: var(--muted); }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.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; }
@media (max-width: 1024px) {
  .hero-grid, .about-grid, .publications-grid, .contact-grid, .cv-grid { grid-template-columns: 1fr; }
  .hero-media { grid-template-columns: 1fr 1fr; }
  .three-up, .four-up, .gallery, .fact-grid, .list-columns { grid-template-columns: repeat(2, 1fr); }
  .media-card-large { grid-row: auto; min-height: 420px; }
  .media-card-top, .media-card-bottom { min-height: 240px; }
}
@media (max-width: 760px) {
  .container { width: min(100% - 24px, 1150px); }
  .nav-wrap { padding: 12px 0; }
  .menu-btn { display: inline-flex; }
  .nav { position: absolute; top: calc(100% + 10px); left: 12px; right: 12px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 12px; border-radius: 20px; background: rgba(255, 255, 255, 0.96); border: 1px solid var(--line); box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .nav a { padding: 12px 10px; border-radius: 12px; }
  .hero { padding-top: 42px; }
  h1 { font-size: clamp(2.4rem, 12vw, 4rem); }
  .hero-media, .three-up, .four-up, .gallery, .fact-grid, .field-row, .list-columns { grid-template-columns: 1fr; }
  .media-card-large, .gallery-card { min-height: 320px; }
  .media-card-top, .media-card-bottom { min-height: 320px; }
  .gallery-card { min-height: 280px; }
}