:root {
  --bg: #f7f7fb;
  --card: #ffffff;
  --ink: #1a1a1f;
  --ink-soft: #5c5c66;
  --muted: #8f92a1;
  --accent: #5568fe;
  --accent-soft: #dfe2ff;
  --border: rgba(15, 23, 42, 0.08);
  font-size: 16px;
  --page-padding: 32px;
  --nav-height: 52px;
  --sidebar-width: 360px;
  font-family: "Times New Roman", "Times", serif;
}

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

.page {
  max-width: 1380px;
  margin: 0 auto;
  padding: var(--page-padding) 32px 60px;
}

.layout {
  position: relative;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(85, 104, 254, 0.12);
  background: linear-gradient(90deg, rgba(247, 247, 251, 0.95), rgba(240, 241, 255, 0.95));
  backdrop-filter: blur(8px);
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
}

.site-nav__inner {
  max-width: 1380px;
  width: 100%;
  margin: 0 auto;
  padding: 0 60px;
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.site-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.site-nav a {
  color: var(--ink-soft);
  padding: 0 0 4px;
  border-bottom: 2px solid transparent;
  font-weight: 600;
  line-height: 1.2;
  transition: color 0.2s, border-color 0.2s;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
  border-color: rgba(85, 104, 254, 0.6);
}

.site-nav a:focus-visible {
  outline: none;
}

.main-column {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: calc(100% - var(--sidebar-width) - 32px);
  margin-right: calc(var(--sidebar-width) + 32px);
}

.section {
  background: var(--card);
  border-radius: 24px;
  padding: 20px 22px;
  margin-bottom: 14px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.hero {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero.section {
  margin-bottom: 8px;
}

.hero__eyebrow,
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.section h2 {
  margin: 0 0 8px;
}

.hero__summary {
  font-size: 1.1rem;
  margin: 4px 0 0;
}

.section-tight {
  margin-top: -4px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  border-radius: 999px;
  padding: 10px 20px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(85, 104, 254, 0.25);
}

.button.primary {
  background: var(--accent);
  color: #fff;
}

.button.secondary {
  background: var(--accent-soft);
  color: var(--accent);
}

.button.ghost {
  border-color: var(--border);
  color: var(--ink);
}

.button.block {
  width: 100%;
  text-align: center;
}

.sidebar {
  position: fixed;
  width: var(--sidebar-width);
  right: max(16px, calc((100vw - 1380px) / 2 + 24px));
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--card);
  border-radius: 24px;
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.sidebar h2 {
  margin: 0 0 4px;
}

.sidebar>p {
  margin: 0 0 2px;
}

.sidebar__school {
  font-weight: 600;
  color: var(--ink);
}

.sidebar__role,
.sidebar__location {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.sidebar__contacts {
  list-style: none;
  margin: 0;
  padding: 8px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.sidebar__contacts::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  right: 0;
  border-top: 1px dashed rgba(85, 104, 254, 0.4);
}

.sidebar__contacts li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar__contacts a {
  color: var(--ink);
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.sidebar__contacts a:hover {
  color: var(--accent);
}

.sidebar__contacts .label {
  font-weight: 600;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.sidebar__contacts a:hover .label {
  border-color: rgba(85, 104, 254, 0.4);
}

.sidebar__contacts .icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  color: var(--accent);
}


.sidebar__visitor {
  position: relative;
  margin: 0;
  padding: 5px 0 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.sidebar__visitor::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  right: 0;
  border-top: 1px dashed rgba(85, 104, 254, 0.4);
}

.sidebar__visitor strong {
  color: var(--ink);
}

.sidebar__visitor p {
  margin: 0;
}

.visitor-ip {
  margin: 2px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.visitor-ip span {
  font-family: "Space Grotesk", monospace;
  color: var(--ink);
}

.skills-icons {
  display: grid;
  gap: 10px;
  margin-top: 6px;
}

.skills-icons>div {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.skills-icons img {
  transition: transform 0.2s;
}

.skills-icons img:hover {
  transform: translateY(-2px);
}

.sidebar__foot {
  position: relative;
  margin-top: 0;
  padding-top: 5px;
  font-size: 0.75rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar__foot::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  border-top: 1px dashed rgba(85, 104, 254, 0.4);
}

.sidebar__foot p {
  margin: 0;
}

.split {
  display: grid;
  gap: 50px;
  grid-template-columns: minmax(180px, 220px) 1fr;
  align-items: start;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.highlight-grid article {
  padding: 18px;
  background: linear-gradient(135deg, #eef0ff, #f7f7fb);
  border-radius: 20px;
  border: 1px solid rgba(85, 104, 254, 0.15);
}

.kpi {
  font-size: 2.5rem;
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
}

.section__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.section__hint {
  color: var(--muted);
  font-size: 0.9rem;
}

.more-link {
  font-size: 0.9rem;
  color: var(--muted);
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.timeline li {
  display: grid;
  grid-template-columns: 90px auto;
  gap: 16px;
  border-left: 3px solid var(--accent);
  padding-left: 16px;
}

.timeline span {
  font-weight: 600;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.cards article {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  background: #fff;
  transition: box-shadow 0.2s, transform 0.2s;
}

.cards article:hover {
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
  transform: translateY(-2px);
}

.pub-list {
  margin: 0;
  padding-left: 20px;
}

.pub-list li {
  margin-bottom: 18px;
}

.logs article {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.25;
}

.logs article:last-child {
  border-bottom: none;
}

.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  align-items: start;
}

.contact-card {
  border: 1px dashed var(--border);
  border-radius: 18px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  background: transparent;
  box-shadow: none;
  border: none;
}

@media (max-width: 1100px) {
  .main-column {
    max-width: 100%;
    margin-right: 0;
  }

  .sidebar {
    position: static;
    transform: none;
    width: 100%;
    margin-top: 20px;
    right: auto;
    top: auto;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.06);
  }
}

@media (max-width: 600px) {
  .section {
    padding: 24px;
  }

  .timeline li {
    grid-template-columns: 1fr;
    border-left: none;
    padding-left: 0;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav__inner {
    padding: 10px 16px;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 10px;
  }

}