.site-header {
  position: relative;
  z-index: 100;
  min-height: 4.5rem;
  border-bottom: 1px solid rgba(231, 241, 240, 0.24);
  background: var(--color-ink-950);
  color: var(--color-paper-050);
}

.site-header__rail {
  display: grid;
  width: min(100% - (var(--gutter) * 2), var(--container-max));
  min-height: 4.5rem;
  margin-inline: auto;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-4);
}

.site-header__brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-paper-050);
  text-decoration: none;
}

.site-header__brand:hover { color: var(--color-paper-050); }

.site-header__logo {
  width: 2.125rem;
  height: 2.125rem;
  flex: 0 0 2.125rem;
  object-fit: contain;
}

.site-header__brand-name {
  display: grid;
  min-width: 0;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 0.85;
  text-transform: uppercase;
}

.site-header__brand-league { color: var(--color-construction-300); }

.site-header__navigation {
  justify-self: center;
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  min-width: 0;
  align-items: stretch;
  justify-content: center;
  gap: clamp(0.5rem, 1.4vw, 1.25rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-list li,
.site-header__nav-list li + li { margin: 0; padding: 0; }

.site-header__nav-list a {
  position: relative;
  display: inline-flex;
  min-height: 4.5rem;
  align-items: center;
  color: var(--color-blueprint-050);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.035em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.site-header__nav-list a::after {
  position: absolute;
  right: 0;
  bottom: 0.6875rem;
  left: 0;
  height: 0.1875rem;
  background: var(--color-construction-500);
  content: "";
  opacity: 0;
  transform: scaleX(0.18);
  transform-origin: left center;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.site-header__nav-list a:hover,
.site-header__nav-list a:focus-visible { color: var(--color-paper-050); }
.site-header__nav-list a:hover::after,
.site-header__nav-list a:focus-visible::after,
.site-header__nav-list a[aria-current="page"]::after { opacity: 1; transform: scaleX(1); }
.site-header__nav-list a[aria-current="page"] { color: var(--color-construction-300); }

.site-header__nav-number,
.site-header__menu-head,
.site-header__menu-play { display: none; }

.site-header__play,
.site-header__menu-play {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 0.875rem;
  border: 1px solid var(--color-construction-500);
  border-radius: var(--radius-sm);
  background: var(--color-construction-500);
  color: var(--color-ink-950);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.site-header__play:hover { border-color: var(--color-construction-300); background: var(--color-construction-300); color: var(--color-ink-950); }

.site-header__toggle { display: none; }

@media (max-width: 70rem) {
  .site-header__rail { grid-template-columns: minmax(0, 1fr) auto auto; }
  .site-header__navigation { justify-self: auto; }
  .site-header__nav-list { gap: 0.75rem; }
  .site-header__nav-list a { font-size: 0.75rem; }
}

@media (max-width: 59.9375rem) {
  .site-header { min-height: 4.25rem; }
  .site-header__rail { min-height: 4.25rem; grid-template-columns: minmax(0, 1fr) auto auto; gap: var(--space-3); }
  .site-header__logo { width: 1.875rem; height: 1.875rem; flex-basis: 1.875rem; }
  .site-header__brand-name { font-size: 0.8125rem; }
  .site-header__play { font-size: 0.6875rem; }

  .site-header__toggle {
    display: inline-flex;
    min-width: 2.75rem;
    min-height: 2.75rem;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 0.625rem;
    border: 1px solid rgba(231, 241, 240, 0.42);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-paper-050);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
  }

  .site-header__toggle[aria-expanded="true"] { border-color: var(--color-construction-500); background: var(--color-construction-500); color: var(--color-ink-950); }
  .site-header__toggle-lines { display: grid; width: 1rem; gap: 0.1875rem; }
  .site-header__toggle-lines span { display: block; width: 100%; height: 0.125rem; background: currentColor; transition: transform var(--transition-fast), opacity var(--transition-fast); }
  .site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:nth-child(1) { transform: translateY(0.3125rem) rotate(45deg); }
  .site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:nth-child(2) { opacity: 0; }
  .site-header__toggle[aria-expanded="true"] .site-header__toggle-lines span:nth-child(3) { transform: translateY(-0.3125rem) rotate(-45deg); }

  .site-header__navigation {
    position: fixed;
    z-index: 110;
    inset: 0 0 0 auto;
    display: flex;
    width: min(100%, 31rem);
    height: 100dvh;
    flex-direction: column;
    padding: max(1.5rem, env(safe-area-inset-top)) var(--gutter) max(1.5rem, env(safe-area-inset-bottom));
    overflow-y: auto;
    border-left: 1px solid rgba(231, 241, 240, 0.28);
    background: var(--color-ink-950);
    box-shadow: var(--shadow-elevated);
    opacity: 0;
    pointer-events: none;
    transform: translateX(100%);
    transition: opacity var(--transition-panel), transform var(--transition-panel);
  }

  .site-header__navigation.is-open { opacity: 1; pointer-events: auto; transform: translateX(0); }
  .site-header__menu-head { display: grid; gap: var(--space-2); padding: 0 0 var(--space-5); border-bottom: 2px solid var(--color-construction-500); }
  .site-header__menu-kicker { color: var(--color-construction-300); font-size: var(--text-micro); font-weight: 700; letter-spacing: 0.13em; line-height: var(--leading-label); text-transform: uppercase; }
  .site-header__menu-title { font-family: var(--font-heading); font-size: 1.75rem; font-weight: 600; letter-spacing: 0.04em; line-height: 1; text-transform: uppercase; }

  .site-header__nav-list { display: grid; justify-content: stretch; gap: 0; margin: var(--space-4) 0 auto; }
  .site-header__nav-list a { display: grid; min-height: 3.5rem; grid-template-columns: 2rem minmax(0, 1fr); gap: var(--space-3); align-items: center; border-bottom: 1px solid rgba(231, 241, 240, 0.2); color: var(--color-paper-050); font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600; letter-spacing: 0.02em; line-height: 1; }
  .site-header__nav-list a::after { right: auto; bottom: 0; width: 2.125rem; }
  .site-header__nav-number { display: inline; color: var(--color-blueprint-300); font-family: var(--font-body); font-size: var(--text-micro); font-weight: 700; letter-spacing: 0.09em; }
  .site-header__nav-list a[aria-current="page"] { color: var(--color-construction-300); }
  .site-header__menu-play { display: inline-flex; width: 100%; margin-top: var(--space-5); }
}

@media (max-width: 31.25rem) {
  .site-header__brand-name { font-size: 0.75rem; }
  .site-header__brand-league { display: none; }
  .site-header__toggle-label { display: none; }
  .site-header__toggle { padding-inline: 0.75rem; }
  .site-header__play { min-width: 2.75rem; padding-inline: 0.625rem; font-size: 0; }
  .site-header__play span { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__navigation,
  .site-header__nav-list a::after,
  .site-header__toggle-lines span { transition: none; }
}