.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: .72rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.hero { padding: clamp(38px,7vw,82px) 0; border-bottom: 1px solid var(--line); }
.hero h1 { max-width: 850px; margin: 0; font-size: clamp(2.5rem,6vw,5.4rem); line-height: .98; letter-spacing: -.055em; }
.hero > p:last-child { max-width: 720px; margin: 22px 0 0; color: var(--muted); font-size: 1.05rem; line-height: 1.7; }
.portal-grid { padding: 40px 0 0; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 16px; }
.portal-card {
  --card-effect-line: color-mix(in srgb, var(--accent) 15%, transparent);
  --card-effect-tile: color-mix(in srgb, var(--accent) 13%, transparent);
  min-height: 190px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 3px 6px rgba(17, 19, 24, .03), 0 8px 15px rgba(17, 19, 24, .05);
  transition: border-color .25s ease, box-shadow .25s ease, background-color .25s ease;
}
.portal-card:hover,
.portal-card:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: 0 5px 10px rgba(17, 19, 24, .06), 0 15px 25px rgba(17, 19, 24, .13);
  background-color: color-mix(in srgb, var(--panel) 96%, var(--accent));
}
.portal-card > span:not(.card-effect) { position: relative; z-index: 2; color: var(--accent); font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.portal-card h2 { position: relative; z-index: 2; margin: 36px 0 8px; font-size: 1.2rem; }
.portal-card p { position: relative; z-index: 2; margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.55; }

.card-effect,
.card-shine,
.card-background,
.card-tiles {
  position: absolute;
  pointer-events: none;
}
.card-effect {
  inset: 0;
  z-index: 1;
  overflow: hidden;
  border-radius: inherit;
}
.card-shine {
  inset: 0;
  opacity: 0;
  background:
    radial-gradient(circle at 88% 88%, color-mix(in srgb, var(--accent) 16%, transparent) 0%, transparent 42%),
    conic-gradient(from 205deg at 72% 62%, transparent 0deg, color-mix(in srgb, var(--accent) 10%, transparent) 32deg, transparent 115deg);
  transition: opacity .45s ease;
}
.card-background {
  top: 0;
  right: 0;
  width: 62%;
  height: 58%;
  opacity: 0;
  overflow: hidden;
  background:
    linear-gradient(var(--card-effect-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--card-effect-line) 1px, transparent 1px);
  background-size: 25% 50%;
  -webkit-mask-image: linear-gradient(135deg, transparent 0 8%, #000 40% 100%);
  mask-image: linear-gradient(135deg, transparent 0 8%, #000 40% 100%);
  transition: opacity .3s ease;
}
.card-tiles {
  inset: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
}
.card-tile {
  opacity: 0;
  background: var(--card-effect-tile);
  animation-duration: 8s;
  animation-iteration-count: infinite;
}
.card-tile:nth-child(1) { grid-column: 2; grid-row: 1; animation-delay: -1s; }
.card-tile:nth-child(2) { grid-column: 4; grid-row: 1; animation-delay: -3s; }
.card-tile:nth-child(3) { grid-column: 1; grid-row: 2; animation-delay: -5s; }
.card-tile:nth-child(4) { grid-column: 3; grid-row: 2; animation-delay: -7s; }
.card-tile:nth-child(5) { grid-column: 4; grid-row: 2; animation-delay: -2s; }
.portal-card:hover .card-shine,
.portal-card:focus-visible .card-shine { opacity: 1; }
.portal-card:hover .card-background,
.portal-card:focus-visible .card-background { opacity: 1; }
.portal-card:hover .card-tile,
.portal-card:focus-visible .card-tile {
  animation-name: card-tile-pulse;
}
@keyframes card-tile-pulse {
  0%, 12.5%, 100% { opacity: 1; }
  25%, 82.5% { opacity: 0; }
}
:root[data-theme="dark"] .portal-card {
  --card-effect-line: rgba(255,255,255,.09);
  --card-effect-tile: color-mix(in srgb, var(--accent) 15%, transparent);
}
.section-heading { margin: 0; font-size: clamp(2rem,4vw,3.5rem); letter-spacing: -.04em; }
.placeholder-panel { margin-top: 30px; padding: clamp(28px,5vw,56px); border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.placeholder-panel p { max-width: 680px; color: var(--muted); line-height: 1.7; }
.button { margin-top: 16px; padding: 10px 14px; display: inline-block; border-radius: 7px; background: var(--accent); color: #fff; font-size: .8rem; font-weight: 700; }

.announcement-bar {
  width: 100%;
  min-height: 44px;
  padding: 0 clamp(20px, 4vw, 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--accent-text);
  font-size: .9rem;
  font-weight: 600;
  line-height: 1.35;
  text-align: center;
}

.announcement-bar > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 920px) {
  .announcement-bar { padding: 12px 24px; }
}
@media (max-width: 1000px) { .portal-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 560px) { .portal-grid { grid-template-columns: 1fr; } }

/* Keep the shared site shell exact while allowing the larger internal menu
   to use the full header width and collapse cleanly. */
.site-header {
  position: relative;
  padding-inline: clamp(20px, 4vw, 64px);
}

.site-nav {
  gap: clamp(11px, 1.2vw, 18px);
  font-size: .78rem;
}

.brand small {
  color: var(--muted);
  font-size: .72em;
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
  padding: 9px 12px;
  border: 1px solid var(--nav-line);
  border-radius: 7px;
  background: transparent;
  color: var(--nav-text);
  cursor: pointer;
}

.site-header .theme-toggle {
  min-height: 34px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: .42rem;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.theme-toggle-label {
  font-size: .7rem;
  font-weight: 600;
  transition: opacity 160ms ease;
}

.theme-toggle-label-dark,
.theme-toggle[aria-pressed="true"] .theme-toggle-label-light { opacity: .48; }
.theme-toggle[aria-pressed="true"] .theme-toggle-label-dark { opacity: 1; }

.theme-toggle-track {
  position: relative;
  width: 40px;
  height: 22px;
  flex: 0 0 auto;
  border: 1px solid var(--nav-line);
  border-radius: 999px;
  background: var(--nav-switch-bg);
}

.theme-toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--nav-switch-thumb);
  box-shadow: 0 1px 3px rgba(0,0,0,.24);
  transition: transform 160ms ease;
}

.theme-toggle[aria-pressed="true"] .theme-toggle-thumb { transform: translateX(18px); }

@media (max-width: 1120px) {
  .site-header {
    min-height: 72px;
    padding: 14px 24px;
    display: flex;
  }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: calc(100% - 1px);
    right: 16px;
    z-index: 20;
    width: min(320px, calc(100vw - 32px));
    margin: 0;
    padding: 18px;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 11px;
    border: 1px solid var(--nav-line);
    border-radius: 0 0 10px 10px;
    background: var(--nav-bg);
    box-shadow: 0 18px 34px rgba(0,0,0,.28);
  }

  .site-nav.is-open { display: flex; }
  .site-nav .theme-toggle { margin-top: 6px; justify-content: flex-end; }
}

/* Font Awesome icon theme control, adapted from the supplied CodePen. */
.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;
}

.site-header .theme-toggle {
  width: 42px;
  height: 42px;
  min-height: 42px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--nav-text);
  transition: background-color .2s ease;
}

.site-header .theme-toggle:is(:hover, :focus-visible) {
  background: color-mix(in srgb, var(--nav-text) 14%, transparent);
}

.theme-toggle-icon {
  width: 21px;
  height: 21px;
  display: block;
  background: currentColor;
  -webkit-mask: url("/assets/icons/moon.svg") center / contain no-repeat;
  mask: url("/assets/icons/moon.svg") center / contain no-repeat;
}

.theme-toggle[aria-pressed="true"] .theme-toggle-icon {
  -webkit-mask-image: url("/assets/icons/sun.svg");
  mask-image: url("/assets/icons/sun.svg");
}

::view-transition-group(root) { animation-duration: 1.25s; }
::view-transition-new(root),
::view-transition-old(root) { mix-blend-mode: normal; }
::view-transition-new(root) { animation-name: reveal-light; }
::view-transition-old(root),
:root[data-theme="dark"]::view-transition-old(root) { animation: none; }
:root[data-theme="dark"]::view-transition-new(root) { animation-name: reveal-dark; }

@keyframes reveal-dark {
  from { clip-path: polygon(-30% 0, -30% 0, -15% 100%, -10% 115%); }
  to { clip-path: polygon(-30% 0, 130% 0, 115% 100%, -10% 115%); }
}

@keyframes reveal-light {
  from { clip-path: polygon(130% 0, 130% 0, 115% 100%, 110% 115%); }
  to { clip-path: polygon(130% 0, -30% 0, -15% 100%, 110% 115%); }
}

@media (max-width: 1120px) {
  .site-nav .theme-toggle {
    margin-top: 6px;
    margin-left: auto;
    align-self: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(root) { animation-duration: 0s; }
}