:root {
  --eag-open-duration: 2200ms;
  --eag-hold-duration: 1800ms;
  --eag-gold: #d7ad57;
  --eag-deep: #130203;
  --eag-red: #7b0b12;
  --eag-red-deep: #260204;
  --eag-red-light: #b4242c;
}

html.eag-lock,
html.eag-lock body {
  overflow: hidden !important;
  overscroll-behavior: none;
  touch-action: none;
}

.eag-gate {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  z-index: 2147483000;
  overflow: hidden;
  display: none;
  background: #120204;
  color: #fff;
  opacity: 1;
  isolation: isolate;
  contain: strict;
}

.eag-gate.is-visible { display: block; }
.eag-gate.is-fading { animation: eagFadeOut 480ms cubic-bezier(.4,0,.2,1) forwards; }

.eag-atmosphere {
  position: absolute;
  inset: -12%;
  background:
    radial-gradient(circle at 50% 54%, rgba(229,181,86,.25), transparent 23%),
    radial-gradient(circle at 50% 50%, rgba(155,12,24,.38), transparent 50%),
    linear-gradient(180deg, #090102 0%, #260307 50%, #080102 100%);
  transform: scale(1.05);
  animation: eagAtmosphere 5s ease-in-out infinite alternate;
}

.eag-beam {
  position: absolute;
  left: 50%;
  top: -10%;
  width: 16vw;
  height: 120%;
  background: linear-gradient(180deg, rgba(255,227,168,0), rgba(255,221,144,.15), rgba(255,227,168,0));
  filter: blur(18px);
  opacity: .55;
  transform-origin: 50% 0;
}
.eag-beam-a { transform: translateX(-92%) rotate(10deg); }
.eag-beam-b { transform: translateX(-8%) rotate(-10deg); }

.eag-door {
  position: absolute;
  z-index: 6;
  top: 0;
  width: 50.4%;
  height: 100%;
  will-change: transform;
  background:
    radial-gradient(ellipse at 36% 12%, rgba(255,120,120,.16), transparent 30%),
    linear-gradient(90deg, rgba(255,255,255,.075), transparent 14%, transparent 80%, rgba(0,0,0,.62)),
    repeating-linear-gradient(90deg, #51070c 0 5px, #690a11 5px 11px, #430509 11px 17px),
    linear-gradient(180deg, var(--eag-red-light) 0%, var(--eag-red) 42%, var(--eag-red-deep) 100%);
  box-shadow:
    inset 0 0 0 1px rgba(239,196,101,.32),
    inset 0 0 48px rgba(255,70,70,.10),
    inset 0 0 110px rgba(0,0,0,.68),
    0 0 80px rgba(0,0,0,.92);
}
.eag-door-left { left: 0; border-right: 1px solid rgba(255,216,135,.55); }
.eag-door-right { right: 0; border-left: 1px solid rgba(255,216,135,.55); }

.eag-door-grain {
  position: absolute;
  inset: 0;
  opacity: .34;
  background:
    linear-gradient(110deg, transparent 0 26%, rgba(255,255,255,.055) 31%, transparent 37% 100%),
    repeating-linear-gradient(90deg, rgba(255,220,210,.028) 0 1px, transparent 1px 9px),
    repeating-linear-gradient(0deg, rgba(25,0,0,.20) 0 2px, transparent 2px 18px);
  mix-blend-mode: screen;
}

.eag-door-frame {
  position: absolute;
  inset: 5.5% 7%;
  border: clamp(2px, .38vw, 6px) solid rgba(224,177,76,.92);
  box-shadow: inset 0 0 0 clamp(3px, .55vw, 9px) rgba(42,2,5,.88), inset 0 0 26px rgba(255,75,75,.08), 0 0 28px rgba(224,174,72,.2);
}

.eag-door-emblem {
  position: absolute;
  top: 50%;
  width: clamp(72px, 13vw, 180px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid rgba(224,183,93,.85);
  color: rgba(238,202,123,.92);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2.3rem, 7vw, 6.8rem);
  text-shadow: 0 0 22px rgba(224,183,93,.3);
  transform: translateY(-50%);
  box-shadow: 0 0 0 10px rgba(0,0,0,.24), inset 0 0 28px rgba(0,0,0,.72);
}
.eag-door-left .eag-door-emblem { right: clamp(18px, 4vw, 68px); }
.eag-door-right .eag-door-emblem { left: clamp(18px, 4vw, 68px); }

.eag-door-ring {
  position: absolute;
  top: 50%;
  width: clamp(18px, 2.5vw, 38px);
  height: clamp(54px, 7vw, 92px);
  border: 3px solid rgba(218,177,88,.9);
  border-radius: 50%;
  transform: translateY(-50%);
  filter: drop-shadow(0 0 8px rgba(218,177,88,.3));
}
.eag-door-left .eag-door-ring { right: 2.8%; }
.eag-door-right .eag-door-ring { left: 2.8%; }

.eag-center-seal {
  position: absolute;
  z-index: 5;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .65rem;
  text-align: center;
  width: min(82vw, 620px);
  opacity: 0;
  animation: eagSealIn 900ms 180ms cubic-bezier(.2,.8,.2,1) forwards;
  pointer-events: none;
}

.eag-kamon {
  width: clamp(94px, 16vw, 172px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(229,193,114,.78);
  box-shadow: 0 0 0 9px rgba(229,193,114,.06), 0 0 54px rgba(211,159,66,.26);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2.2rem, 7vw, 5.6rem);
  color: #e7c47d;
  background: radial-gradient(circle at 38% 32%, rgba(145,20,28,.96), rgba(35,2,5,.96) 62%, rgba(2,1,1,.96));
}

.eag-title {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.55rem, 5vw, 4.2rem);
  letter-spacing: .24em;
  margin-left: .24em;
  color: #f2dfb0;
  text-shadow: 0 2px 24px rgba(0,0,0,.9), 0 0 18px rgba(221,175,80,.25);
}

.eag-subtitle {
  font-family: Arial, sans-serif;
  font-size: clamp(.58rem, 1.8vw, .92rem);
  letter-spacing: .34em;
  margin-left: .34em;
  color: rgba(240,222,183,.72);
}

.eag-floor-glow {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: -8%;
  width: 70vw;
  height: 26vh;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(222,169,70,.24), transparent 68%);
  filter: blur(20px);
}

.eag-gate.is-opening .eag-door-left {
  animation: eagDoorLeft var(--eag-open-duration) cubic-bezier(.65,0,.16,1) forwards;
}
.eag-gate.is-opening .eag-door-right {
  animation: eagDoorRight var(--eag-open-duration) cubic-bezier(.65,0,.16,1) forwards;
}
.eag-gate.is-opening .eag-center-seal {
  opacity: 1;
}
.eag-gate.is-opened .eag-center-seal {
  animation: eagSealHold 720ms cubic-bezier(.2,.8,.2,1) both;
}

@keyframes eagDoorLeft {
  0% { transform: translate3d(0,0,0) rotateY(0deg); }
  72% { transform: translate3d(-92%,0,0) rotateY(-4deg); }
  100% { transform: translate3d(-108%,0,0) rotateY(-6deg); }
}
@keyframes eagDoorRight {
  0% { transform: translate3d(0,0,0) rotateY(0deg); }
  72% { transform: translate3d(92%,0,0) rotateY(4deg); }
  100% { transform: translate3d(108%,0,0) rotateY(6deg); }
}
@keyframes eagSealIn {
  from { opacity: 0; transform: translate(-50%, -44%) scale(.9); filter: blur(10px); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); filter: blur(0); }
}
@keyframes eagSealHold {
  0% { opacity: .45; transform: translate(-50%, -50%) scale(.96); filter: blur(5px); }
  55% { opacity: 1; transform: translate(-50%, -50%) scale(1.035); filter: blur(0); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1); filter: blur(0); }
}
@keyframes eagFadeOut { to { opacity: 0; visibility: hidden; } }
@keyframes eagAtmosphere { to { transform: scale(1.12); filter: saturate(1.12); } }

@media (max-width: 767px) {
  .eag-door { width: 50.8%; }
  .eag-door-frame { inset: 3.5% 5%; }
  .eag-door-emblem { width: 94px; font-size: 3.45rem; }
  .eag-door-left .eag-door-emblem { right: 13px; }
  .eag-door-right .eag-door-emblem { left: 13px; }
  .eag-door-ring { width: 16px; height: 52px; border-width: 2px; }
  .eag-kamon { width: 104px; font-size: 3rem; }
  .eag-title { font-size: 1.72rem; }
  .eag-subtitle { font-size: .55rem; letter-spacing: .21em; margin-left: .21em; }
  .eag-beam { filter: blur(10px); opacity: .42; }
  .eag-floor-glow { width: 100vw; filter: blur(12px); }
}

@media (prefers-reduced-motion: reduce) {
  .eag-atmosphere { animation: none; }
  .eag-gate.is-opening .eag-door-left { animation-duration: 1200ms; }
  .eag-gate.is-opening .eag-door-right { animation-duration: 1200ms; }
}