:root {
  color-scheme: dark;
  --signal-black: #02060c;
  --signal-deep: #012861;
  --signal-blue: #0982eb;
  --signal-ice: #acdcf9;
  --signal-white: #f4f7fa;
  --signal-muted: rgba(244, 247, 250, 0.62);
  --signal-border: rgba(172, 220, 249, 0.18);
}

* { box-sizing: border-box; }

html {
  min-height: 100%;
  background: var(--signal-black);
}

body {
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  color: var(--signal-white);
  background:
    radial-gradient(circle at 50% 44%, rgba(1, 40, 97, 0.2), transparent 34rem),
    var(--signal-black);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  transform: translateY(-160%);
  border: 1px solid var(--signal-blue);
  border-radius: 8px;
  background: #07101d;
  text-decoration: none;
}

.skip-link:focus { transform: translateY(0); }

.splash-header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(150px, 1fr) auto minmax(150px, 1fr);
  align-items: center;
  gap: 28px;
  width: min(1440px, 100%);
  min-height: 78px;
  margin: 0 auto;
  padding: 16px clamp(22px, 4vw, 64px);
  border-bottom: 1px solid rgba(172, 220, 249, 0.08);
  background: linear-gradient(180deg, rgba(2, 6, 12, 0.98), rgba(2, 6, 12, 0.72));
}

.splash-header.splash-header--signed-in {
  grid-template-columns: auto minmax(0, 1fr);
}

.splash-header--signed-in .splash-nav-desktop {
  justify-self: end;
}

.splash-header--signed-in .header-status {
  grid-column: 1 / -1;
  justify-self: end;
}

.wordmark {
  justify-self: start;
  color: rgba(244, 247, 250, 0.78);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.34em;
  text-decoration: none;
  white-space: nowrap;
}

.splash-menu { display: none; }

.splash-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.2vw, 34px);
}

.splash-nav > a,
.nav-submenu > summary {
  position: relative;
  padding: 9px 0;
  color: var(--signal-muted);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color 180ms ease;
}

.splash-nav > a:hover,
.splash-nav > a:focus-visible,
.nav-submenu > summary:hover,
.nav-submenu > summary:focus-visible { color: var(--signal-white); }

.nav-submenu { position: relative; }

.nav-submenu > summary {
  cursor: pointer;
  list-style: none;
}

.nav-submenu > summary::-webkit-details-marker,
.splash-menu > summary::-webkit-details-marker { display: none; }

.nav-submenu > summary::after {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-left: 7px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  content: "";
  transform: translateY(-2px) rotate(45deg);
}

.nav-submenu-links {
  position: absolute;
  top: calc(100% + 9px);
  left: 50%;
  display: grid;
  min-width: 150px;
  padding: 8px;
  transform: translateX(-50%);
  border: 1px solid var(--signal-border);
  border-radius: 10px;
  background: rgba(3, 10, 20, 0.96);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(9, 130, 235, 0.08);
  backdrop-filter: blur(20px);
}

.nav-submenu-wide .nav-submenu-links { min-width: 260px; }

.nav-submenu-links a {
  padding: 9px 11px;
  border-radius: 6px;
  color: var(--signal-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.nav-submenu-links a:hover,
.nav-submenu-links a:focus-visible {
  color: var(--signal-white);
  background: rgba(9, 130, 235, 0.12);
}

.header-status {
  justify-self: end;
  min-width: 0;
}

.account-identity { display: none; }

.account-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.account-link {
  color: rgba(244, 247, 250, 0.52);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.account-link:hover,
.account-link:focus-visible { color: var(--signal-ice); }
.account-link--primary { color: rgba(244, 247, 250, 0.78); }

.home-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 360px);
  align-items: center;
  gap: clamp(20px, 3vw, 44px);
  width: min(1440px, 100%);
  min-height: calc(100svh - 78px);
  margin: 0 auto;
  padding: 28px clamp(20px, 3vw, 48px) 36px;
}

.home-layout-no-news { grid-template-columns: 1fr; }

.home-layout-no-news .signal-art { max-width: 1182px; }

.signal-splash {
  display: grid;
  place-items: center;
  min-width: 0;
}

.signal-art {
  display: block;
  width: 100%;
  height: auto;
}

.signal-mobile { display: none; }

.news-sidebar {
  min-width: 0;
  max-height: calc(100svh - 140px);
  overflow-y: auto;
  padding: 29px;
  border: 1px solid rgba(172, 220, 249, 0.28);
  border-radius: 18px;
  background:
    radial-gradient(circle at 100% 0, rgba(9, 130, 235, 0.19), transparent 52%),
    linear-gradient(155deg, rgba(12, 28, 48, 0.98), rgba(3, 10, 20, 0.98));
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
  scrollbar-color: rgba(172, 220, 249, 0.38) transparent;
  position: relative;
}

.news-sidebar::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  border-radius: 18px 0 0 18px;
  background: linear-gradient(180deg, var(--signal-ice), #0982eb 55%, transparent);
  content: "";
}

.news-sidebar-eyebrow {
  margin: 0 0 8px;
  color: var(--signal-ice);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.news-sidebar h2 {
  margin: 0 0 18px;
  font-size: 1.9rem;
  font-weight: 550;
  letter-spacing: -0.035em;
}

.news-sidebar-item {
  padding: 18px 0 0;
  border-top: 1px solid rgba(172, 220, 249, 0.16);
}

.news-sidebar-item + .news-sidebar-item { margin-top: 21px; }

.news-sidebar-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  color: var(--signal-muted);
  font-size: 0.7rem;
}

.news-card-label {
  padding: 6px 9px;
  border: 1px solid rgba(172, 220, 249, 0.26);
  border-radius: 999px;
  color: var(--signal-ice);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.news-sidebar-item h3 {
  margin: 14px 0 9px;
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.news-sidebar-item-featured h3 { font-size: 1.5rem; }

.news-sidebar-item p {
  display: -webkit-box;
  overflow: hidden;
  margin: 0 0 16px;
  color: var(--signal-muted);
  font-size: 0.83rem;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.news-sidebar-item-featured p { -webkit-line-clamp: 5; }

.news-sidebar-item a {
  color: var(--signal-ice);
  font-size: 0.78rem;
  font-weight: 650;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.news-sidebar-item a:hover,
.news-sidebar-item a:focus-visible { color: var(--signal-white); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.splash-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 48px;
  padding: 10px clamp(22px, 4vw, 64px);
  color: rgba(244, 247, 250, 0.32);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.splash-footer nav {
  display: flex;
  gap: 20px;
}

.splash-footer a { text-decoration: none; }

.splash-footer a:hover,
.splash-footer a:focus-visible { color: var(--signal-ice); }

@media (max-width: 1200px) {
  .splash-header {
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    padding-inline: 16px;
  }

  .wordmark {
    font-size: 0.7rem;
    letter-spacing: 0.26em;
  }

  .splash-nav { gap: 12px; }

  .splash-nav > a,
  .nav-submenu > summary {
    font-size: 0.64rem;
    letter-spacing: 0.08em;
  }

  .account-link {
    font-size: 0.62rem;
    letter-spacing: 0.05em;
  }
}

@media (max-width: 860px) {
  .splash-header {
    grid-template-columns: 1fr auto;
    min-height: 68px;
  }

  .splash-menu {
    position: relative;
    display: block;
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
  }

  .splash-menu > summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 11px;
    border: 1px solid var(--signal-border);
    border-radius: 8px;
    color: var(--signal-muted);
    cursor: pointer;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    list-style: none;
    text-transform: uppercase;
  }

  .splash-menu > summary svg {
    width: 17px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-width: 1.5;
  }

  .splash-nav {
    position: absolute;
    top: calc(100% + 9px);
    right: 0;
    display: none;
    align-items: stretch;
    width: min(280px, calc(100vw - 32px));
    padding: 10px;
    border: 1px solid var(--signal-border);
    border-radius: 12px;
    background: rgba(3, 10, 20, 0.98);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  }

  .splash-menu[open] > .splash-nav { display: grid; }

  .splash-nav > a,
  .nav-submenu > summary {
    padding: 11px 12px;
    font-size: 0.72rem;
  }

  .nav-submenu-links {
    position: static;
    min-width: 0;
    margin: 0 10px 8px;
    transform: none;
    box-shadow: none;
  }

  .header-status {
    grid-column: 1 / -1;
    justify-self: stretch;
    padding-top: 10px;
    border-top: 1px solid rgba(172, 220, 249, 0.08);
  }

  .splash-header--signed-in .header-status {
    justify-self: stretch;
  }

  .account-links {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .home-layout {
    grid-template-columns: 1fr;
    gap: 18px;
    min-height: 0;
    padding: 28px 18px 42px;
  }

  .signal-splash { min-height: 48svh; }

  .signal-art { max-width: 720px; }

  .news-sidebar {
    width: min(720px, 100%);
    max-height: none;
    justify-self: center;
  }
}

@media (max-width: 560px) {
  body {
    background:
      radial-gradient(circle at 50% 44%, rgba(1, 40, 97, 0.32), transparent 22rem),
      var(--signal-black);
  }

  .splash-header { padding-inline: 18px; }

  .wordmark {
    font-size: 0.66rem;
    letter-spacing: 0.25em;
  }

  .home-layout { padding: 24px 18px 36px; }

  .signal-splash { min-height: 38svh; }

  .news-sidebar { padding: 23px 22px; }

  .signal-art { display: none; }

  .signal-mobile {
    display: grid;
    place-items: center;
    width: 100%;
    text-align: center;
  }

  .signal-brand {
    margin: 0 0 24px;
    color: rgba(244, 247, 250, 0.68);
    font-size: 0.72rem;
    letter-spacing: 0.48em;
    text-indent: 0.48em;
  }

  .signal-name {
    margin: 0;
    color: var(--signal-white);
    font-size: clamp(2.5rem, 14vw, 4rem);
    font-weight: 300;
    letter-spacing: 0.28em;
    line-height: 1;
    text-indent: 0.28em;
    text-shadow: 0 0 26px rgba(9, 130, 235, 0.2);
  }

  .signal-name span {
    color: var(--signal-ice);
    text-shadow: 0 0 12px var(--signal-blue), 0 0 34px rgba(9, 130, 235, 0.9);
  }

  .signal-wave {
    width: min(620px, calc(100vw - 20px));
    margin: 8px 0 6px;
    overflow: visible;
    fill: none;
    stroke: url(#signal-line);
    stroke-width: 2;
    filter: url(#signal-glow);
  }

  .signal-wave .signal-baseline {
    stroke-width: 1;
    opacity: 0.5;
  }

  .signal-coming {
    margin: 4px 0 24px;
    color: rgba(172, 220, 249, 0.82);
    font-size: 0.78rem;
    font-weight: 400;
    letter-spacing: 0.62em;
    text-indent: 0.62em;
    text-transform: uppercase;
  }

  .signal-rule {
    width: 42px;
    height: 1px;
    margin-bottom: 22px;
    background: linear-gradient(90deg, transparent, var(--signal-blue), transparent);
  }

  .signal-tagline {
    margin: 0;
    color: rgba(244, 247, 250, 0.56);
    font-size: 0.62rem;
    letter-spacing: 0.29em;
    line-height: 1.7;
    text-indent: 0.29em;
    text-transform: uppercase;
  }

  .splash-footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 18px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}