/* Стилі сторінки професора (UA / RU / EN) */
:root {
  --blue: #235abe;
  --blue-dark: #14367a;
  --ink: #12161f;
  --muted: #545c6b;
  --bg-soft: #f3f7ff;
  --line: #dce6f8;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Montserrat", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  font-size: 17px;
  line-height: 1.65;
}
img { max-width: 100%; height: auto; border: 0; }
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
.wrap { width: 100%; max-width: 1000px; margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.top { background: var(--blue); color: #fff; }
.top-in {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; padding: 14px 0;
}
.top a { color: #fff; text-decoration: none; }
.top-logo img { width: 150px; display: block; }
.top-links { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; font-weight: 600; font-size: 15px; }
.top-cta {
  background: #a90505; border-radius: 6px; padding: 9px 18px;
  font-weight: 700; font-size: 13px; text-transform: uppercase; line-height: 1.25;
  text-align: center;
}

/* ---------- breadcrumbs ---------- */
.crumbs { background: var(--bg-soft); font-size: 14px; padding: 12px 0; color: var(--muted); }
.crumbs a { text-decoration: none; }

/* ---------- hero ---------- */
.hero { background: var(--bg-soft); padding: 26px 0 34px; }
.hero-in { display: flex; gap: 34px; align-items: flex-start; }
.hero-photo { flex: 0 0 300px; }
.hero-photo img { display: block; width: 100%; border-radius: 10px; background: #e6eefc; }
.hero-text { flex: 1 1 auto; min-width: 0; }
h1 {
  font-size: 34px; line-height: 1.22; font-weight: 800;
  color: var(--blue); margin: 0 0 16px; text-transform: uppercase;
}
.names { margin: 0 0 14px; font-size: 15px; color: var(--muted); }
.names strong { display: block; font-size: 20px; color: var(--ink); margin-bottom: 2px; }
.facts { list-style: none; margin: 18px 0 0; padding: 0; display: flex; gap: 14px; flex-wrap: wrap; }
.facts li {
  background: #fff; border: 1px solid var(--line); border-radius: 8px;
  padding: 10px 16px; font-size: 14px; line-height: 1.35; color: var(--muted);
}
.facts b { display: block; font-size: 21px; color: var(--blue); font-weight: 800; }

/* ---------- content ---------- */
main { padding: 34px 0 10px; }
h2 {
  font-size: 25px; line-height: 1.3; font-weight: 800; color: var(--blue);
  margin: 38px 0 14px; padding-bottom: 8px; border-bottom: 2px solid var(--line);
}
main section:first-of-type h2 { margin-top: 0; }
p { margin: 0 0 14px; }
main ul { margin: 0 0 14px; padding-left: 22px; }
main ul li { margin-bottom: 8px; }
.note {
  background: var(--bg-soft); border-left: 4px solid var(--blue);
  padding: 14px 18px; border-radius: 0 8px 8px 0; font-size: 16px; margin: 0 0 14px;
}
.paper { border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin: 0 0 14px; }
.paper-title { font-weight: 700; margin: 0 0 6px; }
.paper-authors { color: var(--muted); font-size: 15px; margin: 0 0 6px; }

/* ---------- CTA ---------- */
.cta { background: var(--bg-soft); margin: 40px 0 0; padding: 30px 0 34px; }
.cta-btn {
  display: inline-block; background: #a90505; color: #fff; text-decoration: none;
  font-weight: 700; font-size: 17px; line-height: 1.3; text-transform: uppercase;
  padding: 16px 30px; border-radius: 8px;
}
.cta-btn:hover { background: #8c0404; color: #fff; }
.channels { list-style: none; margin: 20px 0 0; padding: 0; display: flex; gap: 12px 26px; flex-wrap: wrap; }
.channels a { text-decoration: none; font-weight: 600; }

/* ---------- footer ---------- */
footer { background: var(--blue); color: #fff; padding: 26px 0; margin-top: 40px; text-align: center; }
footer a { color: #fff; }
.disclaimer { font-size: 15px; font-weight: 500; line-height: 1.45; margin: 0 0 12px; }
.foot-links { font-size: 11px; letter-spacing: 1.2px; }

@media (max-width: 860px) {
  body { font-size: 16px; }
  .hero-in { display: block; }
  .hero-photo { max-width: 240px; margin: 0 auto 20px; }
  h1 { font-size: 24px; }
  h2 { font-size: 20px; margin-top: 30px; }
  .facts li { flex: 1 1 140px; }
  .top-in { justify-content: center; }
  .top-links { justify-content: center; gap: 16px; font-size: 14px; }
}

/* ---------- перемикач мов у шапці ---------- */
.top-lang { display: inline-flex; gap: 8px; align-items: center; font-size: 14px; }
.top-lang a, .top-lang-current {
  padding: 3px 8px; border-radius: 4px; line-height: 1.2;
  border: 1px solid rgba(255,255,255,.45); text-decoration: none;
}
.top-lang-current { background: #fff; color: var(--blue); border-color: #fff; font-weight: 700; }
.top-lang a:hover { background: rgba(255,255,255,.18); }