/* Shared EP01-EP08 cover. Portrait values are taken from the approved EP02 cover. */
.series-portrait-cover .series-cover-canvas {
  --series-cover-pink: var(--pink, #fe0990);
  --series-cover-mint: var(--mint, #83f8f0);
  --series-cover-text: var(--text-primary, var(--text, #f7f7f4));
  --series-cover-muted: var(--text-muted, var(--muted, #b8b8b8));
  --series-cover-bg: var(--bg-dark, var(--bg, #252525));
  --series-cover-display: var(--font-display, var(--display, "YouSheBiaoTiHei", "优设标题黑", sans-serif));
  --series-cover-body: var(--font-body, var(--body, "Noto Sans SC", "Source Han Sans SC", "思源黑体", sans-serif));
  --series-cover-mono: var(--font-mono, var(--mono, "Fragment Mono", monospace));
  --series-cover-left: clamp(2.25rem, 10.2cqw, 4.15rem);
  position: relative;
  display: block;
  overflow: hidden;
  isolation: isolate;
  padding: 5.4%;
  padding-bottom: 15%;
  background-color: var(--series-cover-bg);
  background-image:
    radial-gradient(circle at -3% -2%, rgba(254, 9, 144, 0.48), transparent 27%),
    radial-gradient(circle at 103% 92%, rgba(131, 248, 240, 0.27), transparent 25%),
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 11cqw 11cqw, 11cqw 11cqw;
  color: var(--series-cover-text);
  font-family: var(--series-cover-body);
}

body.portrait-mode .series-portrait-cover .series-cover-canvas {
  padding: calc(var(--portrait-width) * 0.054) !important;
  padding-bottom: calc(var(--portrait-width) * 0.15) !important;
}

.series-portrait-cover .series-cover-canvas::before {
  content: "";
  position: absolute;
  inset: clamp(0.75rem, 3cqw, 1.25rem);
  z-index: 0;
  border: 1px solid rgba(247, 247, 244, 0.16);
  pointer-events: none;
}

body.portrait-mode .series-portrait-cover .series-cover-canvas > *,
body.landscape-mode .series-portrait-cover .series-cover-canvas > * {
  position: absolute;
}

.series-cover-glow {
  z-index: 0;
  width: clamp(7rem, 35cqw, 13rem);
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(clamp(1.5rem, 7cqw, 3rem));
  opacity: 0.42;
  pointer-events: none;
  animation: seriesCoverGlow 6.8s ease-in-out infinite alternate;
}

.series-cover-glow-pink {
  top: calc(-1 * clamp(3rem, 14cqw, 5.5rem));
  left: calc(-1 * clamp(3rem, 15cqw, 5.8rem));
  background: var(--series-cover-pink);
}

.series-cover-glow-mint {
  right: calc(-1 * clamp(3rem, 15cqw, 5.8rem));
  bottom: calc(-1 * clamp(3rem, 13cqw, 5rem));
  background: var(--series-cover-mint);
  animation-delay: -3.1s;
}

.series-cover-copy {
  top: clamp(2.8rem, 12.2cqw, 4.9rem);
  right: clamp(1.5rem, 6.2cqw, 2.8rem);
  left: var(--series-cover-left);
  z-index: 3;
}

.series-portrait-cover .series-cover-eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 0;
  color: var(--series-cover-mint);
  font-family: var(--series-cover-mono);
  font-size: clamp(0.58rem, 2.8cqw, 0.82rem);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.series-portrait-cover .series-cover-eyebrow::before {
  content: "//";
  margin-right: 0.58em;
  color: var(--series-cover-pink);
}

.series-cover-title {
  display: grid;
  justify-items: start;
  gap: clamp(0.72rem, 4.8cqw, 1.8rem);
  width: max-content;
  max-width: 100%;
  margin: clamp(1.45rem, 7.1cqw, 2.75rem) 0 0;
  color: var(--series-cover-text);
  font-family: "YouSheBiaoTiHei", "优设标题黑", "Bowlby One", "Bowlby One SC", "Geologica", sans-serif;
  font-size: clamp(3rem, 15.5cqw, 7.2rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: 0;
  text-transform: none;
  text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.42);
}

.series-cover-title span {
  position: relative;
  z-index: 1;
  width: max-content;
  max-width: 100%;
  white-space: nowrap;
}

.series-cover-ai,
.series-cover-vibe {
  font-family: "Bowlby One", "Bowlby One SC", "Geologica", sans-serif;
}

.series-cover-ai {
  color: var(--series-cover-mint);
  animation: seriesCoverAiPulse 3.6s ease-in-out infinite alternate;
}

.series-cover-vibe {
  font-size: 0.78em;
}

.series-cover-site {
  margin-top: 0.02em;
  padding: 0.18em 0.16em 0.22em;
  background: var(--series-cover-pink);
  color: #252525;
  font-size: 0.72em;
  line-height: 0.92;
  text-shadow: none;
  box-shadow: 0.11em 0.14em 0 rgba(0, 0, 0, 0.4);
  transform: rotate(1.2deg) skewX(-1.5deg);
}

.series-cover-chapter {
  max-width: 100%;
  margin: clamp(1.65rem, 9cqw, 3.4rem) 0 0;
  color: var(--series-cover-text);
  font-family: "YouSheBiaoTiHei", "优设标题黑", "Bowlby One", "Bowlby One SC", "Geologica", sans-serif;
  font-size: clamp(1.08rem, 4.6cqw, 2rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0;
  text-transform: none;
  text-shadow: 0.08em 0.1em 0 rgba(0, 0, 0, 0.4);
  white-space: nowrap;
}

body.portrait-mode .series-portrait-cover .series-cover-chapter {
  font-family: "YouSheBiaoTiHei", "优设标题黑", "Bowlby One", "Bowlby One SC", "Geologica", sans-serif;
  font-size: clamp(1.08rem, 4.6cqw, 2rem);
  font-weight: 900;
  line-height: 1.15;
  white-space: nowrap;
  text-wrap: nowrap;
}

body.portrait-mode .series-portrait-cover .series-cover-subhead {
  font-family: var(--series-cover-body);
  font-size: clamp(0.8rem, 3.45cqw, 1.05rem);
  line-height: 1.48;
}

.series-cover-subhead {
  max-width: clamp(18rem, 82cqw, 31rem);
  margin: clamp(1.15rem, 6.3cqw, 2.35rem) 0 0;
  color: rgba(247, 247, 244, 0.88);
  font-family: var(--series-cover-body);
  font-size: clamp(0.8rem, 3.45cqw, 1.05rem);
  line-height: 1.42;
  text-shadow: 0.05em 0.06em 0 rgba(0, 0, 0, 0.34);
}

.series-cover-decoration {
  right: clamp(1.55rem, 6.8cqw, 2.9rem);
  bottom: clamp(2rem, 6.8cqw, 2.8rem);
  left: var(--series-cover-left);
  z-index: 2;
  height: clamp(19rem, 88cqw, 33rem);
  pointer-events: none;
}

.series-cover-rule {
  position: absolute;
  left: 0;
  height: clamp(0.4rem, 1.85cqw, 0.68rem);
  transform: skewX(-11deg) rotate(-1.3deg);
  box-shadow: 0.24rem 0.3rem 0 rgba(0, 0, 0, 0.28);
  animation: seriesCoverRulePulse 5.2s ease-in-out infinite alternate;
}

.series-cover-rule-pink {
  top: 63%;
  width: 44%;
  background: var(--series-cover-pink);
}

.series-cover-rule-mint {
  top: 68%;
  left: 10%;
  width: 52%;
  background: var(--series-cover-mint);
  animation-delay: -1.8s;
}

.series-cover-panel {
  position: absolute;
  top: 70%;
  right: 4%;
  width: 68%;
  height: 27%;
  overflow: hidden;
  border: clamp(0.13rem, 0.58cqw, 0.23rem) solid rgba(247, 247, 244, 0.7);
  background:
    linear-gradient(rgba(255, 255, 255, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.032) 1px, transparent 1px),
    #20242a;
  background-size: 12% 28%, 12% 28%, auto;
  box-shadow: clamp(0.28rem, 1.25cqw, 0.52rem) clamp(0.34rem, 1.5cqw, 0.62rem) 0 var(--series-cover-pink);
  transform: rotate(0.8deg);
  animation: seriesCoverPanelFloat 6.8s cubic-bezier(0.22, 1, 0.36, 1) infinite alternate;
}

.series-cover-panel-top {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: clamp(0.48rem, 2.1cqw, 0.78rem);
  align-items: center;
  height: 27%;
  padding-inline: 6%;
  background: var(--series-cover-pink);
}

.series-cover-dots {
  display: flex;
  gap: clamp(0.2rem, 0.9cqw, 0.34rem);
}

.series-cover-dots span {
  width: clamp(0.35rem, 1.6cqw, 0.6rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background: #20242a;
  animation: seriesCoverDotPulse 3.6s ease-in-out infinite;
}

.series-cover-dots span:nth-child(2) { animation-delay: -1.2s; }
.series-cover-dots span:nth-child(3) { animation-delay: -2.4s; }

.series-cover-tab {
  justify-self: center;
  width: 44%;
  height: clamp(0.28rem, 1.2cqw, 0.44rem);
  background: #20242a;
  opacity: 0.72;
  transform: skewX(-9deg);
  animation: seriesCoverTabPulse 4.8s ease-in-out infinite alternate;
}

.series-cover-control {
  width: clamp(1rem, 4.4cqw, 1.6rem);
  height: clamp(0.28rem, 1.2cqw, 0.44rem);
  background: #20242a;
  opacity: 0.46;
  animation: seriesCoverControlPulse 3.9s ease-in-out -1.4s infinite alternate;
}

.series-cover-placeholder-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: 9%;
  align-items: stretch;
  height: 73%;
  padding: 7% 7% 8%;
}

.series-cover-placeholder-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 10% 12%;
  align-items: center;
  padding: 11%;
  border: 1px solid rgba(247, 247, 244, 0.24);
  background: rgba(247, 247, 244, 0.025);
  box-shadow: clamp(0.16rem, 0.7cqw, 0.28rem) clamp(0.2rem, 0.9cqw, 0.34rem) 0 rgba(0, 0, 0, 0.24);
}

.series-cover-placeholder-square {
  grid-row: 1 / 3;
  width: clamp(1.2rem, 5.1cqw, 1.85rem);
  aspect-ratio: 1;
  background: var(--series-cover-mint);
  box-shadow: 0.12rem 0.15rem 0 rgba(0, 0, 0, 0.22);
  animation: seriesCoverSquareFloat 5.2s cubic-bezier(0.22, 1, 0.36, 1) -0.8s infinite alternate;
}

.series-cover-placeholder-line,
.series-cover-placeholder-copy-line {
  display: block;
  height: clamp(0.3rem, 1.35cqw, 0.48rem);
  transform-origin: left center;
  animation: seriesCoverLineBreath 4.6s ease-in-out infinite alternate;
}

.series-cover-placeholder-pink {
  width: 88%;
  background: var(--series-cover-pink);
  animation-delay: -1.1s;
}

.series-cover-placeholder-muted {
  width: 66%;
  background: rgba(247, 247, 244, 0.38);
  animation-delay: -2.6s;
}

.series-cover-placeholder-copy {
  display: grid;
  align-content: center;
  gap: 14%;
}

.series-cover-placeholder-mint {
  width: 92%;
  background: var(--series-cover-mint);
  animation-delay: -0.45s;
}

.series-cover-placeholder-copy-muted {
  width: 72%;
  background: rgba(247, 247, 244, 0.38);
  animation-delay: -1.8s;
}

.series-cover-placeholder-copy-pink {
  width: 56%;
  background: var(--series-cover-pink);
  animation-delay: -3.15s;
}

.series-cover-star {
  position: absolute;
  top: 68%;
  right: 1.5%;
  width: clamp(1.25rem, 5.8cqw, 2.15rem);
  aspect-ratio: 1;
  background: var(--series-cover-mint);
  clip-path: polygon(50% 0%, 61% 37%, 100% 50%, 61% 63%, 50% 100%, 39% 63%, 0% 50%, 39% 37%);
  filter: drop-shadow(0.25rem 0.3rem 0 rgba(0, 0, 0, 0.32));
  animation: seriesCoverSpark 4.5s ease-in-out infinite alternate;
}

.series-cover-index {
  top: clamp(1.35rem, 5.4cqw, 2.3rem);
  right: clamp(1.75rem, 7.8cqw, 3.5rem);
  z-index: 2;
  color: rgba(247, 247, 244, 0.48);
  font-family: "Bowlby One", var(--series-cover-display);
  font-size: clamp(1.1rem, 5.2cqw, 1.9rem);
  line-height: 1;
  text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.3);
}

/* EP04-EP08 render the same DOM in their direct 16:9 entry. */
body.landscape-mode .series-portrait-cover .series-cover-canvas {
  --series-cover-left: clamp(2.6rem, 5.2cqw, 5.8rem);
  background-size: 100% 100%, 100% 100%, 5.2cqw 5.2cqw, 5.2cqw 5.2cqw;
}

body.landscape-mode .series-portrait-cover .series-cover-copy {
  top: 11%;
  right: 49%;
  left: var(--series-cover-left);
}

body.landscape-mode .series-portrait-cover .series-cover-title {
  gap: clamp(0.3rem, 0.9cqw, 0.8rem);
  margin-top: clamp(0.75rem, 1.6cqw, 1.6rem);
  font-size: clamp(3rem, 7.2cqw, 7.5rem);
}

body.landscape-mode .series-portrait-cover .series-cover-chapter {
  margin-top: clamp(0.8rem, 1.8cqw, 1.8rem);
  font-size: clamp(1.2rem, 2.35cqw, 2.6rem);
}

body.landscape-mode .series-portrait-cover .series-cover-subhead {
  max-width: 41rem;
  margin-top: clamp(0.6rem, 1.2cqw, 1.2rem);
  font-size: clamp(0.68rem, 1.05cqw, 1.05rem);
}

body.landscape-mode .series-portrait-cover .series-cover-decoration {
  top: 16%;
  right: 5%;
  bottom: auto;
  left: auto;
  width: 40%;
  height: 69%;
}

body.landscape-mode .series-portrait-cover .series-cover-rule-pink { top: 8%; }
body.landscape-mode .series-portrait-cover .series-cover-rule-mint { top: 17%; }

body.landscape-mode .series-portrait-cover .series-cover-panel {
  top: 25%;
  right: 2%;
  width: 92%;
  height: 68%;
}

body.landscape-mode .series-portrait-cover .series-cover-star {
  top: 20%;
  right: 0;
}

body.landscape-mode .series-portrait-cover .series-cover-index {
  display: none;
}

@keyframes seriesCoverSpark {
  from { transform: rotate(-8deg) scale(0.92); }
  to { transform: rotate(8deg) scale(1.08); }
}

@keyframes seriesCoverGlow {
  from { opacity: 0.24; transform: scale(0.9); }
  to { opacity: 0.52; transform: scale(1.08); }
}

@keyframes seriesCoverAiPulse {
  from { color: #72eae4; text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.42); }
  to { color: #a2fffa; text-shadow: 0.07em 0.08em 0 rgba(0, 0, 0, 0.42), 0 0 0.35em rgba(131, 248, 240, 0.32); }
}

@keyframes seriesCoverRulePulse {
  from { opacity: 0.72; }
  to { opacity: 1; }
}

@keyframes seriesCoverPanelFloat {
  from { transform: translate3d(0, 0, 0) rotate(0.8deg); }
  to { transform: translate3d(-0.16rem, -0.28rem, 0) rotate(0.25deg); }
}

@keyframes seriesCoverDotPulse {
  0%, 100% { opacity: 0.34; transform: scale(0.88); }
  48% { opacity: 0.92; transform: scale(1.12); }
}

@keyframes seriesCoverTabPulse {
  from { opacity: 0.58; transform: scaleX(0.84) skewX(-9deg); }
  to { opacity: 0.8; transform: scaleX(1) skewX(-9deg); }
}

@keyframes seriesCoverControlPulse {
  from { opacity: 0.28; transform: scaleX(0.72); }
  to { opacity: 0.56; transform: scaleX(1); }
}

@keyframes seriesCoverSquareFloat {
  from { transform: translate3d(0, 0, 0) rotate(-1deg); }
  to { transform: translate3d(0.14rem, -0.24rem, 0) rotate(2deg); }
}

@keyframes seriesCoverLineBreath {
  from { opacity: 0.66; transform: scaleX(0.86); }
  to { opacity: 1; transform: scaleX(1); }
}

@media (prefers-reduced-motion: reduce) {
  .series-portrait-cover *,
  .series-portrait-cover *::before,
  .series-portrait-cover *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}