.site-header {
  background: var(--header-bg);
  border-bottom: 2px solid var(--header-border);
  padding: 0.75rem 1.5rem;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1280px;
  margin: 0 auto;
}

.header-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  flex: 1;
  min-width: 0;
}

.header-logo {
  height: 52px;
  width: auto;
  flex-shrink: 0;
}

.header-text {
  display: flex;
  flex-direction: column;
}

.header-school {
  font-variation-settings: "wght" 700;
  font-size: 1.05rem;
  color: var(--header-text);
  letter-spacing: 0.01em;
  line-height: 1.25;
}

.header-sub {
  font-variation-settings: "wght" 300;
  font-size: 0.72rem;
  color: var(--header-sub);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}

.theme-toggle {
  flex-shrink: 0;
  background: none;
  border: 1px solid var(--header-border);
  border-radius: 20px;
  padding: 5px 12px;
  cursor: pointer;
  font-family: var(--font);
  font-variation-settings: "wght" 400;
  font-size: 12px;
  color: var(--header-text);
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

.theme-toggle:hover {
  background: var(--header-border);
  color: #fff;
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.title-block {
  margin: 20px 0 6px;
}

.title-block h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--text);
}

.title-block h1 span {
  color: var(--accent);
}

@media (max-width: 480px) {
  .header-school {
    font-size: 0.88rem;
  }
  .header-logo {
    height: 38px;
  }
}