/* Landing page — compact liquid-glass page index. */
html:has(body.landing-page) {
  overflow: hidden;
  scrollbar-gutter: auto;
}

.landing-page {
  --landing-ink: #161819;
  --landing-copy: rgba(22, 24, 25, 0.7);
  --landing-muted: rgba(22, 24, 25, 0.5);
  --landing-panel: rgba(219, 223, 225, 0.58);
  --landing-panel-strong: rgba(211, 215, 217, 0.68);
  --landing-border: rgba(255, 255, 255, 0.72);
  --landing-shadow: rgba(41, 50, 56, 0.09);
  width: 100%;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}

.landing-shell {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  width: 100%;
  height: 100%;
  min-height: 0;
  padding: clamp(20px, 4vw, 56px) clamp(20px, 5vw, 92px);
  overflow: hidden;
  isolation: isolate;
}

.landing-shell::before {
  content: "";
  position: absolute;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(circle at 18% 12%, rgba(163, 173, 178, 0.2), transparent 28%),
    radial-gradient(circle at 80% 26%, rgba(184, 191, 195, 0.18), transparent 31%),
    radial-gradient(circle at 47% 88%, rgba(151, 161, 166, 0.13), transparent 29%);
  filter: blur(28px);
  pointer-events: none;
}

.landing-back {
  align-self: start;
  justify-self: start;
  color: var(--landing-ink);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.landing-back:hover,
.landing-back:focus-visible { opacity: 0.58; }

.landing-stage {
  display: grid;
  grid-template-columns: minmax(260px, 1.05fr) minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 22px);
  width: min(100%, 1280px);
  min-height: 0;
  height: 100%;
  margin: 0 auto;
  padding: clamp(14px, 2.6vh, 32px) 0 0;
}

.landing-glass-panel {
  position: relative;
  display: block;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--landing-border);
  border-radius: clamp(24px, 2.5vw, 34px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.06) 48%, rgba(255, 255, 255, 0.18)),
    radial-gradient(ellipse at 15% 0%, rgba(255, 255, 255, 0.58), transparent 38%),
    radial-gradient(ellipse at 88% 112%, rgba(255, 255, 255, 0.27), transparent 44%),
    var(--landing-panel);
  box-shadow:
    0 18px 48px var(--landing-shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.76),
    inset 0 -1px 0 rgba(255, 255, 255, 0.24),
    inset 1px 0 0 rgba(255, 255, 255, 0.25),
    inset -1px 0 0 rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(24px) saturate(1.32) brightness(1.06);
  backdrop-filter: blur(24px) saturate(1.32) brightness(1.06);
}

.landing-glass-panel::before,
.landing-glass-panel::after {
  content: "";
  position: absolute;
  z-index: 0;
  border-radius: inherit;
  pointer-events: none;
}

.landing-glass-panel::before {
  inset: 0;
  background:
    radial-gradient(circle at 24% 12%, rgba(255, 255, 255, 0.34), transparent 34%),
    linear-gradient(108deg, transparent 14%, rgba(255, 255, 255, 0.14) 46%, transparent 73%);
}

.landing-glass-panel::after {
  inset: 1px;
  border: 1px solid rgba(255, 255, 255, 0.33);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 42%);
}

.landing-panel-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.landing-intro {
  position: relative;
  min-width: 0;
}

.landing-intro .landing-panel-content {
  justify-content: center;
  padding: clamp(30px, 5vw, 72px);
}

.landing-kicker {
  margin: 0 0 14px;
  color: var(--landing-muted);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.landing-intro h1 {
  margin: 0 0 20px;
  color: var(--landing-ink);
  font-size: clamp(42px, 5.8vw, 82px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.9;
}

.landing-intro p:not(.landing-kicker) {
  max-width: 25ch;
  margin: 0;
  color: var(--landing-copy);
  font-size: clamp(14px, 1.15vw, 17px);
  line-height: 1.55;
}

.landing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 1.4vw, 16px);
  min-height: 0;
}

.landing-card {
  color: var(--landing-ink);
  text-decoration: none;
}

.landing-card .landing-panel-content {
  align-items: center;
  justify-content: center;
  padding: clamp(20px, 2.3vw, 34px);
  text-align: center;
}

.landing-number {
  position: absolute;
  top: clamp(18px, 2vw, 28px);
  left: clamp(20px, 2.3vw, 34px);
  color: var(--landing-muted);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.landing-card strong {
  margin-bottom: 8px;
  color: var(--landing-ink);
  font-size: clamp(21px, 2.3vw, 32px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
}

.landing-card .landing-panel-content > span:last-child {
  max-width: 23ch;
  color: var(--landing-copy);
  font-size: clamp(11px, 0.9vw, 13.5px);
  line-height: 1.45;
}

.landing-card:hover,
.landing-card:focus-visible { filter: brightness(1.025); }
.landing-card:focus-visible { outline: 2px solid var(--landing-ink); outline-offset: 4px; }

@media (max-width: 760px) {
  .landing-shell {
    grid-template-rows: 34px minmax(0, 1fr);
    gap: 30px;
    padding: 22px 12px 12px;
  }

  .landing-back {
    align-self: end;
  }

  .landing-stage {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(140px, 0.7fr) minmax(0, 1.3fr);
    gap: 10px;
    padding-top: 0;
  }

  .landing-intro .landing-panel-content {
    justify-content: center;
    padding: 20px 12px;
  }

  .landing-intro h1 {
    margin-bottom: 12px;
    font-size: clamp(38px, 12vw, 62px);
  }

  .landing-intro p:not(.landing-kicker) {
    max-width: 32ch;
    font-size: 13px;
  }

  .landing-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .landing-card .landing-panel-content {
    padding: 16px;
  }

  .landing-number {
    top: 15px;
    left: 16px;
    font-size: 9px;
  }

  .landing-card strong {
    margin-bottom: 6px;
    font-size: clamp(18px, 5.8vw, 28px);
  }

  .landing-card .landing-panel-content > span:last-child {
    max-width: 20ch;
    font-size: 10px;
    line-height: 1.35;
  }
}

@media (max-width: 430px) {
  .landing-shell {
    grid-template-rows: 34px minmax(0, 1fr);
    gap: 30px;
    padding: 20px 10px 14px;
  }
  .landing-stage {
    grid-template-rows: minmax(132px, 0.66fr) minmax(0, 1.34fr);
    gap: 8px;
    padding-top: 0;
  }
  .landing-grid { gap: 8px; }
  .landing-glass-panel { border-radius: 20px; }
  .landing-intro .landing-panel-content { padding: 16px 8px; }
  .landing-kicker { margin-bottom: 10px; font-size: 8px; }
  .landing-intro h1 { margin-bottom: 10px; font-size: clamp(36px, 12vw, 50px); }
  .landing-intro p:not(.landing-kicker) { font-size: 11px; line-height: 1.4; }
  .landing-card .landing-panel-content { padding: 13px; }
  .landing-number { top: 12px; left: 13px; font-size: 8px; }
  .landing-card strong { font-size: clamp(17px, 5.4vw, 22px); }
  .landing-card .landing-panel-content > span:last-child { font-size: 9px; }
}

:root[data-theme="dark"] .landing-page {
  --landing-ink: #ebe9e3;
  --landing-copy: rgba(235, 233, 227, 0.72);
  --landing-muted: rgba(235, 233, 227, 0.48);
  --landing-panel: rgba(42, 43, 42, 0.62);
  --landing-panel-strong: rgba(48, 49, 48, 0.68);
  --landing-border: rgba(255, 255, 255, 0.14);
  --landing-shadow: rgba(0, 0, 0, 0.28);
}

:root[data-theme="dark"] .landing-glass-panel,
:root[data-theme="dark"] .landing-glass-panel {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.025) 50%, rgba(255, 255, 255, 0.06)),
    radial-gradient(ellipse at 15% 0%, rgba(255, 255, 255, 0.14), transparent 40%),
    var(--landing-panel);
  box-shadow: 0 20px 54px var(--landing-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.13), inset 0 -1px 0 rgba(255, 255, 255, 0.04);
}

@media (forced-colors: active) {
  .landing-glass-panel { border: 1px solid CanvasText; background: Canvas; box-shadow: none; backdrop-filter: none; }
  .landing-glass-panel::before, .landing-glass-panel::after { display: none; }
}