.byjr-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  width: 100vw;
  height: 100svh;
  color: #2f3438;
  background:
    radial-gradient(circle at 50% 8%, rgba(246, 239, 216, 0.9), transparent 38%),
    linear-gradient(145deg, #d7d3ca 0%, #e9e2d3 52%, #d6d8d3 100%);
}

.byjr-overlay[hidden] {
  display: none !important;
}

.byjr-overlay .byjr-screen {
  --ambient-top: #d9d8d2;
  --ambient-bottom: #ebe4d6;
  --ambient-glow: rgba(246, 239, 216, 0.5);
  --ambient-smudge: rgba(168, 161, 182, 0.24);
  --stage-fog-rgb-1: 174, 187, 194;
  --stage-fog-rgb-2: 184, 168, 168;
  --stage-fog-rgb-3: 168, 161, 182;
  --text-fog-opacity: 0.86;
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 54% 24%, var(--ambient-glow) 0%, transparent 44%),
    radial-gradient(circle at 12% 78%, var(--ambient-smudge) 0%, transparent 48%),
    linear-gradient(180deg, var(--ambient-top) 0%, var(--ambient-bottom) 100%);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  touch-action: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background 900ms ease;
}

.byjr-overlay .byjr-screen:focus {
  outline: none;
}

.byjr-overlay .byjr-skip {
  position: absolute;
  z-index: 20;
  top: max(14px, env(safe-area-inset-top));
  right: max(14px, env(safe-area-inset-right));
  min-height: 38px;
  padding: 8px 13px;
  color: rgba(47, 52, 56, 0.72);
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 8px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.byjr-overlay .byjr-fog-canvas,
.byjr-overlay .byjr-particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.byjr-overlay .byjr-fog-canvas {
  z-index: 1;
}

.byjr-overlay .byjr-particle-canvas {
  z-index: 2;
  pointer-events: none;
}

.byjr-overlay .byjr-cover-layer {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: grid;
  place-items: center;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 55% at 50% 48%, rgba(47, 52, 56, 0.18) 0%, rgba(34, 38, 42, 0.62) 68%, rgba(20, 22, 26, 0.94) 100%),
    linear-gradient(180deg, #353b40 0%, #252a2f 100%);
  opacity: 1;
  transition:
    opacity 1200ms ease,
    filter 1200ms ease,
    transform 1200ms ease;
}

.byjr-overlay .byjr-cover-layer::before,
.byjr-overlay .byjr-cover-layer::after {
  position: absolute;
  content: "";
  pointer-events: none;
}

.byjr-overlay .byjr-cover-layer::before {
  inset: -22%;
  background:
    radial-gradient(circle at 18% 34%, rgba(174, 187, 194, 0.42) 0%, transparent 27%),
    radial-gradient(circle at 78% 28%, rgba(184, 168, 168, 0.34) 0%, transparent 29%),
    radial-gradient(circle at 65% 74%, rgba(168, 161, 182, 0.34) 0%, transparent 31%),
    radial-gradient(circle at 29% 76%, rgba(144, 154, 163, 0.36) 0%, transparent 34%),
    radial-gradient(circle at 50% 48%, rgba(216, 212, 206, 0.15) 0%, transparent 40%);
  filter: blur(34px);
  mix-blend-mode: screen;
  opacity: 0.78;
  animation: byjr-cover-fog 9s ease-in-out infinite;
}

.byjr-overlay .byjr-cover-layer::after {
  inset: -12%;
  background:
    radial-gradient(ellipse at 50% 44%, rgba(10, 12, 16, 0) 0%, rgba(10, 12, 16, 0.22) 48%, rgba(10, 12, 16, 0.7) 100%),
    radial-gradient(circle at 50% 50%, rgba(238, 241, 243, 0.08) 0%, transparent 28%);
  opacity: 0.92;
}

.byjr-overlay .byjr-cover-vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse 76% 62% at 50% 48%, rgba(20, 22, 26, 0) 34%, rgba(20, 22, 26, 0.32) 72%, rgba(14, 16, 20, 0.64) 100%);
}

.byjr-overlay .byjr-cover-title {
  position: relative;
  z-index: 2;
  margin: 0;
  color: #eef1f3;
  font-family: "Songti SC", "Noto Serif CJK SC", "STSong", serif;
  font-size: 112px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  text-shadow:
    0 0 2px rgba(12, 14, 18, 0.94),
    0 4px 14px rgba(12, 14, 18, 0.76),
    0 18px 58px rgba(12, 14, 18, 0.56),
    0 32px 88px rgba(12, 14, 18, 0.38);
  transform-origin: center;
  animation: byjr-cover-title 7s ease-in-out infinite;
}

.byjr-overlay .byjr-cover-hint {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: max(54px, 9vh);
  margin: 0;
  color: rgba(235, 238, 241, 0.64);
  font-size: 13px;
  font-weight: 300;
  text-align: center;
  text-shadow: 0 1px 10px rgba(12, 14, 18, 0.68);
  animation: byjr-hint 3s ease-in-out infinite;
}

.byjr-overlay .byjr-screen.byjr-cover-dismissed .byjr-cover-layer {
  opacity: 0;
  filter: blur(8px);
  transform: scale(1.045) translateY(-14px);
}

.byjr-overlay .byjr-screen.byjr-cover-gone .byjr-cover-layer {
  display: none;
}

.byjr-overlay .byjr-screen.byjr-cover-mode .byjr-stage-text {
  opacity: 0;
  transform: translate(-50%, calc(-50% + 10px));
}

.byjr-overlay .byjr-stage-text {
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 50%;
  width: min(86vw, 348px);
  padding: 32px 24px 29px;
  transform: translate(-50%, -50%);
  color: #2f3438;
  text-align: center;
  pointer-events: none;
  isolation: isolate;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.2),
    0 10px 28px rgba(246, 239, 216, 0.38),
    0 12px 36px rgba(47, 52, 56, 0.08);
  opacity: 1;
  transition:
    opacity 560ms ease,
    filter 560ms ease,
    transform 560ms ease;
}

.byjr-overlay .byjr-stage-text::before,
.byjr-overlay .byjr-stage-text::after {
  position: absolute;
  z-index: 0;
  content: "";
  pointer-events: none;
  transform: translate3d(0, 0, 0);
}

.byjr-overlay .byjr-stage-text::before {
  inset: -54px -40px -47px;
  border-radius: 47% 53% 57% 43% / 45% 50% 50% 55%;
  background:
    radial-gradient(ellipse at 49% 48%, rgba(255, 255, 255, 0.38) 0%, rgba(255, 255, 255, 0.16) 16%, transparent 34%),
    radial-gradient(ellipse at 42% 44%, rgba(var(--stage-fog-rgb-1), 0.88) 0%, rgba(var(--stage-fog-rgb-1), 0.7) 34%, transparent 72%),
    radial-gradient(ellipse at 62% 56%, rgba(var(--stage-fog-rgb-2), 0.68) 0%, rgba(var(--stage-fog-rgb-2), 0.48) 38%, transparent 78%),
    radial-gradient(ellipse at 50% 61%, rgba(var(--stage-fog-rgb-3), 0.42) 0%, transparent 68%);
  box-shadow:
    0 18px 52px rgba(70, 78, 85, 0.14),
    0 4px 22px rgba(255, 255, 255, 0.12) inset;
  filter: blur(22px);
  opacity: var(--text-fog-opacity);
  animation: byjr-text-mist 7.6s ease-in-out infinite;
}

.byjr-overlay .byjr-stage-text::after {
  inset: -66px -66px -56px -58px;
  border-radius: 57% 43% 48% 52% / 49% 46% 54% 51%;
  background:
    radial-gradient(circle at 26% 38%, rgba(255, 255, 255, 0.22) 0 2px, transparent 5px),
    radial-gradient(circle at 67% 35%, rgba(var(--stage-fog-rgb-1), 0.24) 0 2px, transparent 6px),
    radial-gradient(circle at 73% 63%, rgba(var(--stage-fog-rgb-2), 0.2) 0 1px, transparent 5px),
    radial-gradient(circle at 35% 68%, rgba(var(--stage-fog-rgb-3), 0.22) 0 1px, transparent 5px),
    radial-gradient(ellipse at 51% 50%, rgba(var(--stage-fog-rgb-2), 0.28), transparent 65%);
  background-size: 74px 56px, 92px 68px, 68px 76px, 80px 70px, auto;
  filter: blur(11px);
  opacity: calc(var(--text-fog-opacity) * 0.5);
  animation: byjr-text-drift 11s ease-in-out infinite;
}

.byjr-overlay .byjr-stage-text > * {
  position: relative;
  z-index: 1;
}

.byjr-overlay .byjr-screen.byjr-text-hidden .byjr-stage-text,
.byjr-overlay .byjr-screen.byjr-final .byjr-stage-text {
  opacity: 0;
  filter: blur(2px);
  transform: translate(-50%, calc(-50% + 7px));
}

.byjr-overlay .byjr-stage-main,
.byjr-overlay .byjr-stage-desc,
.byjr-overlay .byjr-stage-hint,
.byjr-overlay .byjr-final-quote {
  margin: 0;
}

.byjr-overlay .byjr-stage-main {
  color: #2f3438;
  font-size: 23px;
  font-weight: 700;
  line-height: 1.42;
}

.byjr-overlay .byjr-stage-desc {
  margin-top: 16px;
  color: #5a6168;
  font-size: 14.5px;
  font-weight: 400;
  line-height: 1.86;
}

.byjr-overlay .byjr-stage-hint {
  position: absolute;
  top: calc(100% + 90px);
  left: 50%;
  width: max-content;
  max-width: min(76vw, 260px);
  transform: translateX(-50%);
  color: #737a80;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.6;
  white-space: nowrap;
}

.byjr-overlay .byjr-final-quote {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  width: min(82vw, 328px);
  transform: translate(-50%, calc(-50% + 10px));
  color: #2f3438;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition:
    opacity 1100ms ease,
    transform 1100ms ease;
}

.byjr-overlay .byjr-final-main,
.byjr-overlay .byjr-final-desc,
.byjr-overlay .byjr-final-coda {
  display: block;
}

.byjr-overlay .byjr-final-main {
  font-size: 24px;
  font-weight: 650;
  line-height: 1.75;
}

.byjr-overlay .byjr-final-desc {
  margin-top: 18px;
  color: #5a6168;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.9;
}

.byjr-overlay .byjr-final-coda {
  margin-top: 34px;
  color: #2f3438;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.8;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 2200ms ease 3900ms,
    transform 2200ms ease 3900ms;
}

.byjr-overlay .byjr-screen.byjr-final-ready .byjr-final-quote {
  opacity: 1;
  transform: translate(-50%, -50%);
}

.byjr-overlay .byjr-screen.byjr-final-ready .byjr-final-coda {
  opacity: 1;
  transform: translateY(0);
}

@keyframes byjr-cover-fog {
  0%, 100% { transform: translate3d(-3%, 1%, 0) rotate(-2deg) scale(1); }
  48% { transform: translate3d(4%, -3%, 0) rotate(2.4deg) scale(1.06); }
  76% { transform: translate3d(1%, 3%, 0) rotate(-0.8deg) scale(1.03); }
}

@keyframes byjr-cover-title {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-6px) scale(1.018); }
}

@keyframes byjr-hint {
  0%, 100% { opacity: 0.36; }
  50% { opacity: 0.92; }
}

@keyframes byjr-text-mist {
  0%, 100% {
    border-radius: 47% 53% 57% 43% / 45% 50% 50% 55%;
    transform: translate3d(-2px, 0, 0) rotate(-1.2deg) scaleX(1);
  }
  42% {
    border-radius: 53% 47% 45% 55% / 53% 45% 55% 47%;
    transform: translate3d(3px, -5px, 0) rotate(1deg) scaleX(1.04);
  }
  72% {
    border-radius: 45% 55% 52% 48% / 48% 56% 44% 52%;
    transform: translate3d(1px, 3px, 0) rotate(-0.4deg) scaleY(1.03);
  }
}

@keyframes byjr-text-drift {
  0%, 100% { transform: translate3d(-8px, 2px, 0) rotate(1deg); }
  50% { transform: translate3d(9px, -5px, 0) rotate(-1.4deg); }
}

@media (max-width: 420px) {
  .byjr-overlay .byjr-cover-title {
    font-size: 96px;
  }

  .byjr-overlay .byjr-stage-main,
  .byjr-overlay .byjr-final-main {
    font-size: 22px;
  }

  .byjr-overlay .byjr-stage-text {
    width: min(86vw, 300px);
    padding: 31px 20px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .byjr-overlay .byjr-screen,
  .byjr-overlay .byjr-stage-text,
  .byjr-overlay .byjr-final-quote,
  .byjr-overlay .byjr-cover-layer,
  .byjr-overlay .byjr-stage-text::before,
  .byjr-overlay .byjr-stage-text::after,
  .byjr-overlay .byjr-final-coda {
    transition-duration: 120ms;
    animation: none;
  }

  .byjr-overlay .byjr-cover-layer::before,
  .byjr-overlay .byjr-cover-title,
  .byjr-overlay .byjr-cover-hint {
    animation: none;
  }

  .byjr-overlay .byjr-final-coda {
    transition-delay: 600ms;
  }
}