/* 《梅香境》2026 沉浸式體驗層：所有效果皆為漸進增強 */
@property --plum-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

@property --scan-x {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --scan-y {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --card-rx {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

@property --card-ry {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

:root {
  --aurora-plum: oklch(49% .16 351);
  --aurora-gold: oklch(79% .12 82);
  --aurora-jade: oklch(46% .09 174);
  --glass: color-mix(in oklch, var(--night-soft) 76%, transparent);
  --hairline: color-mix(in oklch, var(--gold) 32%, transparent);
  --hero-depth: 0;
  --scene-light: .34;
}

html {
  background: #050807;
  scrollbar-color: color-mix(in oklch, var(--plum) 72%, var(--gold)) #070b0a;
}

body {
  position: relative;
  min-width: 320px;
  background:
    radial-gradient(circle at 18% 12%, color-mix(in oklch, var(--plum) 13%, transparent), transparent 32rem),
    radial-gradient(circle at 82% 58%, color-mix(in oklch, var(--jade-light) 12%, transparent), transparent 36rem),
    var(--night);
  text-rendering: optimizeLegibility;
}

body[data-effects="off"] {
  --scene-light: 0;
}

.plum-webgl {
  position: fixed;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  opacity: var(--scene-light);
  mix-blend-mode: screen;
  pointer-events: none;
  transition: opacity .8s ease, filter .8s ease;
  filter: saturate(1.18) contrast(1.04);
}

.plum-webgl.is-disabled,
.webgl-fallback .plum-webgl,
body[data-effects="off"] .plum-webgl {
  opacity: 0;
}

body:is([data-scene="affinity"], [data-scene="development"]) .plum-webgl {
  opacity: calc(var(--scene-light) * .18);
  mix-blend-mode: multiply;
}

.film-grain {
  position: fixed;
  inset: -50%;
  z-index: 700;
  opacity: .035;
  pointer-events: none;
  background-image:
    repeating-radial-gradient(circle at 17% 32%, #fff 0 .55px, transparent .7px 3px),
    repeating-radial-gradient(circle at 73% 67%, #000 0 .55px, transparent .7px 4px);
  background-size: 7px 9px, 11px 13px;
  mix-blend-mode: soft-light;
  animation: grain-shift .24s steps(2, end) infinite;
}

main section,
.game-footer {
  position: relative;
}

main section > .shell,
.hero-content,
.hero-scroll-cue,
.capture-label,
.game-footer > .shell {
  position: relative;
  z-index: 3;
}

main section::selection {
  background: color-mix(in oklch, var(--plum) 82%, black);
}

h1, h2, h3, .hero-line, blockquote {
  text-wrap: balance;
}

p, li {
  text-wrap: pretty;
}

:where(a, button, summary):focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 5px;
}

/* 固定章節讀取器 */
.experience-rail {
  position: fixed;
  top: 50%;
  right: max(18px, calc((100vw - 1540px) / 2));
  z-index: 820;
  display: grid;
  justify-items: center;
  gap: .7rem;
  width: 30px;
  color: var(--gold-bright);
  transform: translateY(-50%);
  pointer-events: none;
  mix-blend-mode: difference;
}

.rail-index {
  font: 700 .64rem/1 var(--sans);
  letter-spacing: .12em;
  writing-mode: vertical-rl;
}

.rail-track {
  position: relative;
  width: 1px;
  height: clamp(90px, 18vh, 170px);
  overflow: hidden;
  background: rgba(238, 230, 215, .24);
}

.rail-track i {
  position: absolute;
  inset: 0 0 auto;
  height: 100%;
  background: linear-gradient(var(--gold-bright), var(--plum-bright));
  transform: scaleY(0);
  transform-origin: top;
  will-change: transform;
}

.rail-title {
  max-height: 10rem;
  overflow: hidden;
  color: #fff;
  font: 600 .64rem/1.5 var(--sans);
  letter-spacing: .16em;
  writing-mode: vertical-rl;
}

/* 導覽：深色玻璃與沉浸開關 */
.plum-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--plum) 12%, transparent), transparent 32%, color-mix(in oklch, var(--jade) 18%, transparent)),
    rgba(5, 8, 7, .8);
  backdrop-filter: blur(22px) saturate(1.35);
  transition: opacity .35s ease;
}

.plum-nav.scrolled::before { opacity: 1; }
.plum-nav.scrolled { background: transparent; }

.effect-toggle {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .4rem .65rem;
  border: 1px solid var(--hairline);
  background: rgba(9, 13, 12, .46);
  color: var(--paper-muted);
  font-size: .68rem;
  letter-spacing: .08em;
  cursor: pointer;
}

.effect-toggle span {
  width: 6px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--gold-bright);
  box-shadow: 0 0 10px var(--gold-bright);
}

.effect-toggle[aria-pressed="false"] span {
  background: #777;
  box-shadow: none;
}

/* Hero：GPU 墨流之上的電影式資訊層 */
.hero {
  min-height: max(820px, 100svh);
  perspective: 1200px;
  background: #060908;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.hero::before {
  inset: clamp(88px, 9vw, 132px) clamp(22px, 4vw, 72px) clamp(28px, 5vw, 70px);
  z-index: 0;
  border: 1px solid rgba(226, 199, 119, .17);
  clip-path: polygon(0 0, 36% 0, 36% 1px, 100% 1px, 100% 72%, calc(100% - 1px) 72%, calc(100% - 1px) 100%, 64% 100%, 64% calc(100% - 1px), 0 calc(100% - 1px));
}

.hero::after {
  top: 50%;
  right: -2vw;
  z-index: -1;
  content: "梅";
  color: transparent;
  font: 900 clamp(22rem, 43vw, 46rem)/.72 var(--serif);
  -webkit-text-stroke: 1px rgba(226, 199, 119, .1);
  transform: translateY(-43%) rotate(4deg);
  filter: blur(.2px);
}

.hero-backdrop {
  --hero-scale: 1.045;
  scale: var(--hero-scale);
  transform-origin: 62% 48%;
  filter: saturate(.92) contrast(1.06) brightness(.84);
  will-change: transform, filter;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(3, 6, 5, .985) 0%, rgba(4, 8, 7, .9) 27%, rgba(4, 8, 7, .36) 58%, rgba(4, 8, 7, .13) 100%),
    linear-gradient(0deg, #060908 0%, transparent 32%, rgba(0, 0, 0, .32) 100%),
    radial-gradient(circle at 70% 46%, transparent 0 14%, rgba(4, 8, 7, .22) 55%);
}

.hero-petals {
  opacity: .18;
  filter: blur(.4px);
  animation: petal-field 18s linear infinite alternate;
}

.hero-content {
  width: min(1320px, calc(100% - 7vw));
  margin-inline: auto;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: .6rem;
  width: fit-content;
  padding-right: .9rem;
  border: 1px solid rgba(226, 199, 119, .2);
  background: rgba(4, 8, 7, .46);
  backdrop-filter: blur(12px);
}

.hero h1 {
  position: relative;
  width: fit-content;
  isolation: isolate;
}

.hero h1::before {
  content: "";
  position: absolute;
  inset: -1.5rem -5rem -1rem -2rem;
  z-index: -1;
  background: radial-gradient(ellipse, rgba(0, 0, 0, .48), transparent 72%);
  filter: blur(14px);
}

.hero h1 > span {
  color: var(--paper);
  background:
    linear-gradient(112deg, #fffaf1 0 36%, var(--gold-bright) 48%, #f7efe0 62% 100%);
  background-size: 240% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 8px 32px rgba(0, 0, 0, .62));
  animation: title-sheen 9s ease-in-out infinite;
}

.hero h1 small {
  position: relative;
  padding-left: .15rem;
}

.hero h1 small::after {
  content: "";
  position: absolute;
  top: 50%;
  left: calc(100% + 1rem);
  width: clamp(70px, 12vw, 190px);
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.hero-line {
  display: grid;
  gap: .1rem;
}

.hero-line span {
  display: block;
  width: fit-content;
}

.hero-line span:last-child {
  color: #fff9ef;
  text-shadow: 0 0 32px rgba(201, 164, 97, .12);
}

.hero-actions .button {
  position: relative;
  overflow: clip;
  isolation: isolate;
}

.hero-actions .button::after {
  content: "";
  position: absolute;
  inset: -100% 55% -100% -40%;
  z-index: -1;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .42), transparent);
  transform: skewX(-18deg) translateX(-180%);
  transition: transform .7s cubic-bezier(.2, .8, .2, 1);
}

.hero-actions .button:hover::after,
.hero-actions .button:focus-visible::after {
  transform: skewX(-18deg) translateX(320%);
}

.hero-readout {
  display: grid;
  grid-template-columns: repeat(3, minmax(150px, 1fr));
  width: min(720px, 100%);
  margin: 2rem 0 0;
  border: 1px solid rgba(226, 199, 119, .18);
  background: rgba(4, 8, 7, .5);
  backdrop-filter: blur(14px) saturate(1.2);
}

.hero-readout div {
  padding: .78rem 1rem;
  border-right: 1px solid rgba(226, 199, 119, .15);
}

.hero-readout div:last-child { border-right: 0; }
.hero-readout dt { color: var(--gold); font-size: .62rem; font-weight: 700; letter-spacing: .14em; }
.hero-readout dd { margin: .15rem 0 0; color: var(--paper); font-size: .78rem; }

.hero-scroll-cue {
  position: absolute;
  right: clamp(30px, 4vw, 72px);
  bottom: clamp(54px, 7vh, 86px);
  display: grid;
  justify-items: center;
  gap: .65rem;
  color: var(--paper-muted);
  font-size: .56rem;
  letter-spacing: .2em;
  writing-mode: vertical-rl;
}

.hero-scroll-cue i {
  display: block;
  width: 1px;
  height: 74px;
  overflow: hidden;
  background: rgba(238, 230, 215, .22);
}

.hero-scroll-cue i::after {
  content: "";
  display: block;
  width: 100%;
  height: 45%;
  background: linear-gradient(var(--gold-bright), transparent);
  animation: scroll-cue 2s ease-in-out infinite;
}

/* 通用章節光帶與深度 */
[data-scene] {
  isolation: isolate;
}

.section-pad::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .42;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0 8%, rgba(226, 199, 119, .035) 8% calc(8% + 1px), transparent calc(8% + 1px) 92%, rgba(226, 199, 119, .035) 92% calc(92% + 1px), transparent calc(92% + 1px)),
    radial-gradient(ellipse at 50% 0%, color-mix(in oklch, var(--plum) 7%, transparent), transparent 55%);
}

.section-heading .eyebrow::before,
.story-copy .eyebrow::before,
.affinity-copy .eyebrow::before,
.boss-copy .eyebrow::before,
.cinematic-copy .eyebrow::before {
  content: "";
  display: inline-block;
  width: 2.7rem;
  height: 1px;
  margin-right: .8rem;
  vertical-align: middle;
  background: currentColor;
  transform-origin: left;
}

.section-heading h2,
.story-copy h2,
.affinity-copy h2,
.boss-copy h2,
.cinematic-copy h2,
.accessibility h2,
.final-content h2 {
  max-width: 18ch;
  text-shadow: 0 10px 34px rgba(0, 0, 0, .15);
}

.promise,
.gameplay,
.cast,
.gallery,
.faq {
  background-color: rgba(7, 11, 10, .95);
  background-blend-mode: normal;
}

.story,
.choice,
.cinematic,
.world,
.boss,
.accessibility {
  background-color: rgba(10, 16, 14, .92);
}

.promise-card,
.mechanic,
.outcome,
.faction-grid article,
.affinity-scenes article,
.build-card,
.accessibility-list {
  transform: perspective(900px) rotateX(var(--card-rx)) rotateY(var(--card-ry)) translateZ(0);
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.promise-card::before,
.mechanic::before,
.outcome::before,
.faction-grid article::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background: radial-gradient(circle at var(--pointer-x, 50%) var(--pointer-y, 50%), color-mix(in oklch, var(--gold) 16%, transparent), transparent 45%);
  transition: opacity .3s ease;
  pointer-events: none;
}

.promise-card:hover::before,
.mechanic:hover::before,
.outcome:hover::before,
.faction-grid article:hover::before { opacity: 1; }

.promise-card,
.mechanic,
.outcome,
.faction-grid article { position: relative; isolation: isolate; }

.promise-card > span,
.mechanic-icon,
.outcome > span {
  transform: translateZ(28px);
}

@supports selector(.outcome-track:has(.outcome:hover)) {
  .outcome-track:has(.outcome:hover) .outcome:not(:hover) {
    opacity: .58;
    filter: saturate(.7);
  }
}

/* 戰棋掃描視窗 */
.tactical-window {
  --scan-x: 52%;
  --scan-y: 48%;
  isolation: isolate;
  cursor: crosshair;
}

.tactical-window::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: .62;
  background-image:
    linear-gradient(rgba(98, 224, 202, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(98, 224, 202, .5) 1px, transparent 1px),
    radial-gradient(circle at var(--scan-x) var(--scan-y), rgba(226, 199, 119, .2), transparent 18%);
  background-size: 52px 52px, 52px 52px, 100% 100%;
  mask-image: radial-gradient(circle 24% at var(--scan-x) var(--scan-y), #000 0 58%, transparent 80%);
  mix-blend-mode: screen;
  pointer-events: none;
  transition: opacity .25s ease;
}

.tactical-window:not(:hover)::after { opacity: .22; }

.tactical-hud {
  position: absolute;
  inset: 22px;
  z-index: 4;
  pointer-events: none;
  color: #9af0df;
  font: 700 .58rem/1 var(--sans);
  letter-spacing: .14em;
}

.tactical-hud::before,
.tactical-hud::after {
  content: "";
  position: absolute;
  width: 42px;
  height: 42px;
  border-color: currentColor;
  border-style: solid;
}

.tactical-hud::before { top: 0; left: 0; border-width: 1px 0 0 1px; }
.tactical-hud::after { right: 0; bottom: 0; border-width: 0 1px 1px 0; }
.tactical-hud i,
.tactical-hud b,
.tactical-hud em { position: absolute; padding: .38rem .48rem; background: rgba(3, 9, 8, .72); font-style: normal; }
.tactical-hud i { top: 8px; left: 8px; }
.tactical-hud b { top: 8px; right: 8px; color: var(--gold-bright); }
.tactical-hud em { right: 8px; bottom: 8px; }

.grid-readout {
  position: relative;
  overflow: clip;
  container-type: inline-size;
}

.grid-readout::after {
  content: "";
  position: absolute;
  right: -25%;
  bottom: -25%;
  width: 70%;
  aspect-ratio: 1;
  border: 1px solid rgba(226, 199, 119, .1);
  border-radius: 50%;
  box-shadow: 0 0 0 40px rgba(226, 199, 119, .025), 0 0 0 80px rgba(226, 199, 119, .015);
}

/* 角色：大型舞台與材質光 */
.cast-index {
  position: sticky;
  top: 78px;
  z-index: 12;
  background: rgba(8, 12, 11, .72);
  backdrop-filter: blur(18px) saturate(1.3);
  box-shadow: 0 18px 50px rgba(0, 0, 0, .24);
}

.cast-index a[aria-current="true"] {
  color: var(--ink);
  background: var(--gold-bright);
}

.cast-index a[aria-current="true"] span { color: var(--plum); }

.character-profile {
  container-type: inline-size;
  overflow: clip;
  box-shadow: 0 45px 120px rgba(0, 0, 0, .24);
}

.character-profile::after {
  content: "";
  position: absolute;
  inset: -35%;
  z-index: -1;
  opacity: .2;
  background: conic-gradient(from var(--plum-angle), transparent, color-mix(in oklch, var(--accent) 55%, transparent), transparent 28%, transparent 70%, color-mix(in oklch, var(--gold) 22%, transparent), transparent);
  animation: profile-aura 18s linear infinite;
}

.character-portrait {
  transform: perspective(1100px) rotateX(var(--card-rx)) rotateY(var(--card-ry));
  transform-style: preserve-3d;
  transition: transform .35s ease, box-shadow .35s ease;
}

.character-portrait::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: .45;
  background: radial-gradient(circle at var(--pointer-x, 50%) var(--pointer-y, 35%), rgba(255, 244, 219, .2), transparent 34%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.character-detail > h3 {
  position: relative;
  width: fit-content;
}

.character-detail > h3::after {
  content: "";
  position: absolute;
  right: -2.2rem;
  bottom: .15em;
  width: 1.5rem;
  height: 1px;
  background: var(--accent);
}

.character-stills button {
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

/* 影片與畫廊：掃描線、聚焦與電影框 */
.cinematic-player {
  overflow: clip;
  isolation: isolate;
  border-color: color-mix(in oklch, var(--gold) 58%, transparent);
  box-shadow: 0 35px 100px rgba(0, 0, 0, .52), 0 0 0 1px rgba(255, 255, 255, .025) inset;
}

.cinematic-player::before,
.cinematic-player::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.cinematic-player::before {
  inset: 10px;
  z-index: 3;
  opacity: .11;
  background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(255, 255, 255, .12) 3px 4px);
  mix-blend-mode: overlay;
}

.cinematic-player::after {
  inset: -2px;
  z-index: -1;
  background: conic-gradient(from var(--plum-angle), transparent 0 32%, var(--plum-bright), var(--gold-bright), transparent 49% 100%);
  animation: profile-aura 12s linear infinite;
}

.cinematic-player video { position: relative; z-index: 2; }

.concept-gallery {
  perspective: 1300px;
}

.gallery-card {
  transform: perspective(1000px) rotateX(var(--card-rx)) rotateY(var(--card-ry));
  transform-style: preserve-3d;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.gallery-card > span { transform: translateZ(24px); }

/* Boss 與最後一幕 */
.boss-mark span {
  backdrop-filter: blur(12px);
  animation: boss-breathe 5.4s ease-in-out infinite;
}

.boss-mark span:last-child { animation-delay: -2.7s; }

.final-cta {
  min-height: max(760px, 92svh);
}

.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .5;
  background: radial-gradient(circle at 73% 50%, color-mix(in oklch, var(--fire) 25%, transparent), transparent 30%);
  mix-blend-mode: screen;
}

/* 文學十部曲：以五幕結構把原典母題帶回玩家的棋盤 */
.literary-cycle {
  position: relative;
  isolation: isolate;
  overflow: clip;
  color: #eee8da;
  background:
    linear-gradient(180deg, rgba(8, 11, 10, .96), rgba(14, 9, 12, .97) 48%, rgba(6, 10, 9, .98)),
    radial-gradient(circle at 76% 18%, rgba(151, 38, 75, .2), transparent 35rem);
}

.literary-cycle::before,
.literary-cycle::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.literary-cycle::before {
  inset: 0;
  z-index: -2;
  opacity: .48;
  background:
    linear-gradient(90deg, transparent 0 9.8%, rgba(231, 199, 119, .08) 10%, transparent 10.15% 89.8%, rgba(231, 199, 119, .08) 90%, transparent 90.15%),
    repeating-linear-gradient(0deg, transparent 0 114px, rgba(231, 199, 119, .035) 115px, transparent 116px),
    radial-gradient(ellipse at 30% 20%, rgba(44, 117, 95, .17), transparent 35%);
}

.literary-cycle::after {
  inset: 0;
  z-index: -1;
  opacity: .12;
  background: repeating-radial-gradient(ellipse at 50% 20%, transparent 0 90px, rgba(229, 203, 142, .15) 91px, transparent 92px 182px);
  mask-image: linear-gradient(180deg, #000, transparent 72%);
}

body[data-scene="cycle"] .plum-webgl {
  opacity: .44;
  mix-blend-mode: screen;
}

.cycle-orbit {
  position: absolute;
  inset: 0;
  z-index: -1;
  font-family: var(--font-serif);
  color: rgba(241, 221, 169, .14);
}

.cycle-orbit span {
  position: absolute;
  font-size: clamp(5rem, 13vw, 12rem);
  line-height: 1;
  filter: blur(.2px);
}

.cycle-orbit span:nth-child(1) { top: 5%; left: -2%; }
.cycle-orbit span:nth-child(2) { top: 23%; right: -1%; }
.cycle-orbit span:nth-child(3) { top: 39%; left: 3%; }
.cycle-orbit span:nth-child(4) { top: 56%; right: 2%; }
.cycle-orbit span:nth-child(5) { top: 72%; left: -1%; }
.cycle-orbit span:nth-child(6) { bottom: 2%; right: -2%; }

.cycle-heading {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(360px, 1fr);
  align-items: end;
  gap: clamp(2rem, 7vw, 8rem);
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.cycle-heading h2 {
  max-width: 12ch;
  font-size: clamp(3rem, 6.4vw, 7rem);
  line-height: .99;
  text-wrap: balance;
}

.cycle-intro {
  padding: clamp(1.2rem, 3vw, 2rem) 0 clamp(.2rem, 1vw, 1rem) clamp(1.4rem, 3vw, 2.4rem);
  border-left: 1px solid color-mix(in oklch, var(--gold) 54%, transparent);
}

.cycle-intro p {
  margin: 0;
  color: rgba(238, 232, 218, .76);
  font-size: clamp(1rem, 1.3vw, 1.16rem);
  line-height: 2;
  text-wrap: pretty;
}

.cycle-intro p + p { margin-top: 1rem; }

.cycle-disclosure {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  padding: 1.3rem 1.45rem;
  margin-bottom: 2rem;
  border: 1px solid rgba(228, 196, 119, .22);
  border-left: 3px solid var(--plum-bright);
  background: rgba(8, 11, 10, .74);
  backdrop-filter: blur(18px) saturate(1.25);
}

.cycle-disclosure > span,
.cycle-source,
.cycle-card header,
.cycle-act-head > span {
  color: var(--gold-bright);
  font-family: var(--font-sans);
  font-size: .71rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.cycle-disclosure p {
  max-width: 88ch;
  margin: 0;
  color: rgba(238, 232, 218, .72);
  line-height: 1.85;
}

.cycle-motif-ribbon {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  overflow-x: auto;
  padding: 1rem 0;
  margin-bottom: clamp(2.4rem, 5vw, 4.8rem);
  border-block: 1px solid rgba(228, 196, 119, .16);
  color: rgba(238, 232, 218, .66);
  font-family: var(--font-serif);
  white-space: nowrap;
  scrollbar-width: none;
}

.cycle-motif-ribbon i {
  width: 4px;
  height: 4px;
  flex: 0 0 4px;
  border-radius: 50%;
  background: var(--plum-bright);
  box-shadow: 0 0 18px var(--plum-bright);
}

.cycle-soundscape {
  display: grid;
  grid-template-columns: minmax(220px, .65fr) minmax(0, 1.1fr) minmax(180px, .45fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: end;
  padding: clamp(1.5rem, 3vw, 2.6rem);
  margin: 0 0 clamp(2.5rem, 6vw, 5rem);
  border: 1px solid rgba(228, 196, 119, .17);
  background: linear-gradient(110deg, rgba(102, 25, 48, .16), rgba(8, 13, 11, .82) 52%, rgba(25, 68, 56, .16));
}

.cycle-soundscape h3 {
  margin: .45rem 0 0;
  color: #f2ecdf;
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 3.3rem);
  line-height: 1.2;
}

.cycle-soundscape > p {
  margin: 0;
  color: rgba(238, 232, 218, .7);
  line-height: 1.9;
  text-wrap: pretty;
}

.cycle-wave-wide {
  height: 74px;
  justify-content: flex-end;
  gap: 5px;
  margin: 0;
  color: var(--plum-bright);
}

.cycle-wave-wide i { width: 3px; }
.cycle-wave-wide i:nth-child(n+8) { color: var(--gold-bright); }
.cycle-wave-wide i:nth-child(10) { height: 90%; }
.cycle-wave-wide i:nth-child(11) { height: 46%; }
.cycle-wave-wide i:nth-child(12) { height: 76%; }
.cycle-wave-wide i:nth-child(13) { height: 100%; }

.cycle-prologue {
  position: relative;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) minmax(180px, 280px);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  overflow: clip;
  padding: clamp(2rem, 5vw, 4.3rem);
  margin-bottom: clamp(4rem, 8vw, 8rem);
  border: 1px solid rgba(228, 196, 119, .27);
  background:
    radial-gradient(circle at 85% 38%, rgba(42, 124, 96, .18), transparent 34%),
    linear-gradient(135deg, rgba(111, 28, 54, .28), rgba(6, 12, 10, .9) 48%, rgba(9, 8, 8, .95));
  box-shadow: 0 34px 100px rgba(0, 0, 0, .35);
}

.cycle-prologue::after {
  content: "命數未定";
  position: absolute;
  right: -1rem;
  bottom: -.24em;
  color: rgba(237, 220, 179, .045);
  font-family: var(--font-serif);
  font-size: clamp(4rem, 11vw, 10rem);
  font-weight: 900;
  letter-spacing: .08em;
  white-space: nowrap;
}

.cycle-prologue-number {
  position: relative;
  z-index: 1;
  color: transparent;
  font-family: var(--font-serif);
  font-size: clamp(5rem, 10vw, 9rem);
  font-weight: 900;
  line-height: 1;
  -webkit-text-stroke: 1px rgba(231, 199, 119, .62);
}

.cycle-prologue-copy { position: relative; z-index: 1; }
.cycle-source { margin: 0 0 .65rem; }

.cycle-prologue h3 {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4vw, 4.4rem);
  line-height: 1.08;
}

.cycle-prologue-copy > p:not(.cycle-source) {
  max-width: 65ch;
  margin: 0;
  color: rgba(238, 232, 218, .78);
  line-height: 1.95;
}

.cycle-acts {
  display: grid;
  gap: clamp(5rem, 11vw, 10rem);
}

.cycle-act {
  position: relative;
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(190px, 250px) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding-top: clamp(2rem, 4vw, 3.5rem);
  border-top: 1px solid rgba(228, 196, 119, .22);
}

.cycle-act::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(28%, 260px);
  height: 2px;
  background: linear-gradient(90deg, var(--plum-bright), var(--gold-bright), transparent);
}

.cycle-act-head {
  position: sticky;
  top: 112px;
  align-self: start;
}

.cycle-act-head h3 {
  margin: .65rem 0 1rem;
  color: #f3ecde;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.3vw, 3.6rem);
  line-height: 1.1;
}

.cycle-act-head p {
  margin: 0;
  color: rgba(238, 232, 218, .57);
  line-height: 1.8;
}

.cycle-episode-list {
  display: grid;
  min-width: 0;
  max-width: 100%;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
  perspective: 1200px;
}

.cycle-episode-list > li { min-width: 0; }

.cycle-card {
  --pointer-x: 50%;
  --pointer-y: 35%;
  --card-rx: 0deg;
  --card-ry: 0deg;
  position: relative;
  display: flex;
  min-height: 370px;
  flex-direction: column;
  overflow: clip;
  padding: clamp(1.35rem, 2.2vw, 2rem);
  border: 1px solid rgba(228, 196, 119, .17);
  background:
    radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(126, 44, 70, .17), transparent 38%),
    linear-gradient(155deg, rgba(26, 24, 22, .88), rgba(7, 11, 10, .96));
  box-shadow: 0 20px 60px rgba(0, 0, 0, .24);
  transform: perspective(1000px) rotateX(var(--card-rx)) rotateY(var(--card-ry));
  transform-style: preserve-3d;
  transition: transform .24s ease, border-color .24s ease, opacity .24s ease, box-shadow .24s ease;
  container-type: inline-size;
}

.cycle-card::before,
.cycle-card::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.cycle-card::before {
  inset: 0;
  background:
    linear-gradient(120deg, transparent 0 44%, rgba(255, 255, 255, .035) 45%, transparent 46%),
    repeating-linear-gradient(90deg, transparent 0 43px, rgba(238, 219, 171, .022) 44px, transparent 45px);
}

.cycle-card::after {
  top: 0;
  left: 0;
  width: 34%;
  height: 2px;
  background: linear-gradient(90deg, var(--plum-bright), var(--gold-bright));
  box-shadow: 0 0 28px rgba(226, 199, 119, .22);
}

.cycle-card:hover {
  border-color: rgba(228, 196, 119, .44);
  box-shadow: 0 28px 80px rgba(0, 0, 0, .38), 0 0 42px rgba(119, 31, 61, .09);
}

.cycle-episode-list:has(.cycle-card:hover) .cycle-card:not(:hover) { opacity: .7; }

.cycle-card header {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
}

.cycle-card header > span { color: var(--plum-bright); font-size: .82rem; }
.cycle-card header small { color: rgba(231, 210, 161, .5); font-size: .64rem; letter-spacing: .07em; text-align: right; }

.cycle-card h4 {
  position: relative;
  z-index: 1;
  margin: 1rem 0 .8rem;
  color: #f2ecdf;
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 2.1vw, 2.3rem);
  line-height: 1.24;
  text-wrap: balance;
}

.cycle-card > p:not(.cycle-motif) {
  position: relative;
  z-index: 1;
  margin: 0;
  color: rgba(238, 232, 218, .7);
  line-height: 1.9;
  text-wrap: pretty;
}

.cycle-motif {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: auto 0 0;
  padding-top: 1.25rem;
}

.cycle-motif span {
  padding: .28rem .55rem;
  border: 1px solid rgba(228, 196, 119, .18);
  color: rgba(237, 216, 166, .72);
  background: rgba(0, 0, 0, .18);
  font-family: var(--font-sans);
  font-size: .67rem;
  letter-spacing: .05em;
}

.cycle-wave {
  position: relative;
  z-index: 1;
  display: flex;
  height: 42px;
  align-items: center;
  gap: 4px;
  margin-top: 1.3rem;
  color: var(--gold-bright);
}

.cycle-wave i {
  display: block;
  width: 2px;
  height: 36%;
  border-radius: 2px;
  background: currentColor;
  box-shadow: 0 0 12px color-mix(in oklch, currentColor 55%, transparent);
  transform-origin: center;
  animation: cycle-pulse 2.6s ease-in-out infinite alternate;
}

.cycle-wave i:nth-child(2) { height: 70%; animation-delay: -.4s; }
.cycle-wave i:nth-child(3) { height: 42%; animation-delay: -.8s; }
.cycle-wave i:nth-child(4) { height: 100%; animation-delay: -1.2s; }
.cycle-wave i:nth-child(5) { height: 58%; animation-delay: -1.6s; }
.cycle-wave i:nth-child(6) { height: 82%; animation-delay: -2s; }
.cycle-wave i:nth-child(7) { height: 30%; animation-delay: -2.4s; }
.cycle-wave i:nth-child(8) { height: 68%; animation-delay: -1s; }
.cycle-wave i:nth-child(9) { height: 24%; animation-delay: -.2s; }

.wave-gate i,
.wave-escape i { animation-timing-function: steps(4, end); }
.wave-snow { color: #cadbd3; opacity: .7; }
.wave-fall { align-items: flex-end; color: #a84c68; }
.wave-pipa { color: #f0d686; }
.wave-lament { color: #d5c9b0; opacity: .58; }
.wave-return { color: #c15a7d; flex-direction: row-reverse; }

.cycle-card-featured {
  border-color: rgba(228, 196, 119, .5);
  background:
    radial-gradient(circle at var(--pointer-x) var(--pointer-y), rgba(223, 194, 116, .15), transparent 35%),
    linear-gradient(155deg, rgba(71, 29, 42, .78), rgba(7, 14, 12, .98));
}

.cycle-card-featured::after { width: 100%; }

.cycle-act-coda .cycle-episode-list { grid-template-columns: minmax(0, 1fr); }

.cycle-card-coda {
  min-height: 310px;
  padding-right: min(34vw, 28rem);
  background:
    linear-gradient(90deg, rgba(17, 11, 14, .94), rgba(8, 15, 12, .84)),
    radial-gradient(circle at 80% 35%, rgba(43, 118, 93, .2), transparent 35%);
}

.cycle-card-coda::before {
  left: auto;
  right: 0;
  width: min(33vw, 28rem);
  background:
    radial-gradient(circle at 50% 34%, rgba(194, 80, 116, .2), transparent 17%),
    repeating-radial-gradient(ellipse at 50% 100%, transparent 0 28px, rgba(230, 203, 135, .08) 29px, transparent 30px 60px);
}

.cycle-closing {
  position: relative;
  max-width: 950px;
  margin: clamp(6rem, 12vw, 12rem) auto 0;
  padding: clamp(2rem, 5vw, 4rem);
  border: 0;
  text-align: center;
}

.cycle-closing::before {
  content: "“";
  position: absolute;
  top: -.55em;
  left: 50%;
  color: rgba(228, 196, 119, .18);
  font-family: Georgia, serif;
  font-size: 12rem;
  transform: translateX(-50%);
}

.cycle-closing p {
  position: relative;
  margin: 0;
  color: #f4ecdd;
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.8vw, 4rem);
  font-weight: 700;
  line-height: 1.45;
  text-wrap: balance;
}

.cycle-closing cite {
  display: block;
  margin-top: 1.25rem;
  color: var(--gold-bright);
  font-family: var(--font-sans);
  font-size: .74rem;
  font-style: normal;
  letter-spacing: .15em;
}

/* 原生捲動時間軸：不支援時沿用既有 IntersectionObserver */
@supports (animation-timeline: scroll()) {
  .page-progress span {
    width: 100% !important;
    transform: scaleX(0);
    transform-origin: left;
    animation: reading-progress linear both;
    animation-timeline: scroll(root block);
  }

  .hero-backdrop {
    animation: hero-depth linear both;
    animation-timeline: scroll(root block);
    animation-range: 0 105vh;
  }

  .hero-content {
    animation: hero-content-drift linear both;
    animation-timeline: scroll(root block);
    animation-range: 0 92vh;
  }

  .section-heading,
  .story-copy,
  .cinematic-copy,
  .boss-copy {
    view-timeline-name: --section-title;
    view-timeline-axis: block;
    animation: section-heading-in linear both;
    animation-timeline: --section-title;
    animation-range: entry 5% cover 34%;
  }
}

/* 新一代原生 carousel marker，僅在支援瀏覽器啟用 */
@supports selector(.outcome::scroll-marker) {
  @media (max-width: 620px) {
    .outcome-track {
      display: flex;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      scroll-marker-group: after;
      scrollbar-width: none;
    }

    .outcome { flex: 0 0 88%; scroll-snap-align: center; }
    .outcome-track::scroll-marker-group { display: flex; justify-content: center; gap: .5rem; margin-top: 1rem; }
    .outcome::scroll-marker { content: ""; width: 7px; height: 7px; border: 1px solid var(--gold); border-radius: 50%; }
    .outcome::scroll-marker:target-current { background: var(--gold-bright); }
  }
}

@supports selector(.cycle-episode-list > li::scroll-marker) {
  @media (max-width: 760px) {
    .cycle-episode-list { scroll-marker-group: after; }
    .cycle-episode-list::scroll-marker-group { display: flex; justify-content: center; gap: .55rem; margin-top: 1rem; }
    .cycle-episode-list > li::scroll-marker { content: ""; width: 8px; height: 8px; border: 1px solid var(--gold); border-radius: 50%; }
    .cycle-episode-list > li::scroll-marker:target-current { background: var(--gold-bright); box-shadow: 0 0 14px var(--gold-bright); }
  }
}

@supports (corner-shape: squircle) {
  .button,
  .effect-toggle,
  .hero-readout,
  .youtube-note {
    border-radius: 12px;
    corner-shape: squircle;
  }
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: .32s;
  animation-timing-function: cubic-bezier(.2, .75, .2, 1);
}

@container (max-width: 560px) {
  .grid-readout h3 { font-size: 1.65rem; }
  .grid-readout li { padding: .82rem; }
}

@keyframes grain-shift {
  0% { transform: translate3d(-2%, -1%, 0) rotate(.001deg); }
  50% { transform: translate3d(1%, 2%, 0) rotate(.001deg); }
  100% { transform: translate3d(2%, -2%, 0) rotate(.001deg); }
}

@keyframes title-sheen {
  0%, 32% { background-position: 100% 50%; }
  58%, 100% { background-position: -80% 50%; }
}

@keyframes petal-field {
  from { transform: translate3d(-1.5%, -1%, 0) scale(1.02); }
  to { transform: translate3d(2%, 1.5%, 0) scale(1.06); }
}

@keyframes scroll-cue {
  0% { transform: translateY(-110%); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(220%); opacity: 0; }
}

@keyframes profile-aura { to { --plum-angle: 360deg; transform: rotate(360deg); } }
@keyframes boss-breathe { 50% { box-shadow: 0 0 90px rgba(215, 119, 69, .27); filter: brightness(1.12); } }
@keyframes reading-progress { to { transform: scaleX(1); } }
@keyframes hero-depth { to { transform: translate3d(0, 11vh, 0) scale(1.13); filter: saturate(.66) contrast(1.12) brightness(.56); } }
@keyframes hero-content-drift { to { opacity: .12; transform: translate3d(0, 18vh, 0) scale(.97); } }
@keyframes section-heading-in { from { opacity: .12; transform: translate3d(0, 4rem, 0); filter: blur(8px); } to { opacity: 1; transform: none; filter: none; } }
@keyframes cycle-pulse { from { transform: scaleY(.45); opacity: .42; } to { transform: scaleY(1); opacity: 1; } }

@media (max-width: 1320px) {
  .experience-rail { display: none; }
  .nav-links { gap: .85rem; }
  .effect-toggle { padding-inline: .5rem; }
}

@media (max-width: 900px) {
  :root { --scene-light: .2; }
  .effect-toggle { margin-top: .6rem; }
  .hero-readout { width: 100%; }
  .cast-index { top: 68px; }
  .tactical-window::after { opacity: .28; }
  .film-grain { opacity: .022; }
  .cycle-heading { grid-template-columns: 1fr; gap: 1.5rem; }
  .cycle-intro { max-width: 760px; }
  .cycle-soundscape { grid-template-columns: 1fr; align-items: start; }
  .cycle-wave-wide { justify-content: flex-start; }
  .cycle-act { grid-template-columns: 170px minmax(0, 1fr); gap: 1.5rem; }
  .cycle-episode-list { grid-template-columns: 1fr; }
  .cycle-card { min-height: 0; }
}

@media (max-width: 620px) {
  :root { --scene-light: .13; }
  .film-grain { display: none; }
  .hero { min-height: max(840px, 100svh); }
  .hero::before { inset: 82px 12px 24px; }
  .hero::after { right: -22vw; font-size: 84vw; opacity: .65; }
  .hero-content { width: calc(100% - 32px); }
  .hero-kicker { display: inline-flex; max-width: 100%; padding-right: .6rem; font-size: .65rem; letter-spacing: .1em; }
  .hero-readout { grid-template-columns: 1fr; margin-top: 1.3rem; }
  .hero-readout div { display: grid; grid-template-columns: 92px 1fr; align-items: center; border-right: 0; border-bottom: 1px solid rgba(226, 199, 119, .15); }
  .hero-readout div:last-child { border-bottom: 0; }
  .hero-readout dd { margin: 0; }
  .hero-scroll-cue { display: none; }
  .capture-label { z-index: 4; }
  .tactical-hud { inset: 12px; }
  .tactical-hud b, .tactical-hud em { display: none; }
  .tactical-window::after { background-size: 42px 42px, 42px 42px, 100% 100%; }
  .cast-index { position: relative; top: auto; backdrop-filter: none; }
  .character-profile::after { display: none; }
  .literary-cycle { padding-bottom: 6rem; }
  .cycle-orbit { display: none; }
  .cycle-heading h2 { font-size: clamp(2.8rem, 14vw, 4.4rem); }
  .cycle-intro { padding: 1.1rem 0 0 1.15rem; }
  .cycle-disclosure { grid-template-columns: 1fr; gap: .5rem; }
  .cycle-motif-ribbon { justify-content: flex-start; margin-inline: -16px; padding-inline: 16px; }
  .cycle-prologue { grid-template-columns: 58px minmax(0, 1fr); gap: 1rem; padding: 1.3rem; }
  .cycle-prologue-number { font-size: 4.5rem; }
  .cycle-prologue > .cycle-wave { display: none; }
  .cycle-act { display: block; }
  .cycle-act-head { position: static; margin-bottom: 1.5rem; }
  .cycle-episode-list {
    display: flex;
    gap: .8rem;
    overflow-x: auto;
    margin-inline: -16px;
    padding-inline: 16px;
    padding-bottom: .6rem;
    scroll-snap-type: x mandatory;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
  }
  .cycle-episode-list > li { flex: 0 0 min(84vw, 345px); scroll-snap-align: center; }
  .cycle-card { min-height: 390px; }
  .cycle-card-coda { min-height: 420px; padding-right: 1.35rem; }
  .cycle-card-coda::before { inset: auto 0 0; width: 100%; height: 35%; opacity: .48; }
  .cycle-closing { margin-top: 7rem; padding-inline: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .film-grain { display: none; }
  .plum-webgl { opacity: .12; }
  .hero-backdrop,
  .hero-content,
  .section-heading,
  .story-copy,
  .cinematic-copy,
  .boss-copy {
    animation: none !important;
  }
  .promise-card,
  .mechanic,
  .outcome,
  .faction-grid article,
  .character-portrait,
  .gallery-card,
  .cycle-card { transform: none !important; }
  .cycle-wave i { animation: none !important; }
}

@media (prefers-contrast: more) {
  .plum-webgl,
  .film-grain { display: none; }
  .hero-shade { background: linear-gradient(90deg, #020403 0 52%, rgba(2, 4, 3, .74)); }
  .effect-toggle { border-color: var(--gold-bright); }
}