/* 我的故事：一屏一章的沉浸式图文故事书 */
.story-main {
  --story-ease: cubic-bezier(.2, .78, .24, 1);
  position: relative;
  min-width: 0;
}

.story-book {
  height: 100svh;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
  overscroll-behavior-y: auto;
  background:
    radial-gradient(circle at 12% 20%, rgba(var(--color-accent-rgb), .09), transparent 34%),
    var(--color-bg);
}

.story-book::-webkit-scrollbar { display: none; }

.story-slide {
  position: relative;
  min-height: 100svh;
  padding: calc(var(--header-height) + 38px) clamp(22px, 5vw, 80px) 50px;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  overflow: hidden;
  isolation: isolate;
}

.story-cover {
  display: grid;
  place-items: center;
  text-align: center;
}

.story-cover::before,
.story-cover::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(var(--color-accent-rgb), .16);
  border-radius: 50%;
  pointer-events: none;
}

.story-cover::before { width: min(72vw, 760px); aspect-ratio: 1; }
.story-cover::after { width: min(54vw, 570px); aspect-ratio: 1; }

.story-cover-glow {
  position: absolute;
  width: min(44vw, 460px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--color-accent-rgb), .22), transparent 68%);
  filter: blur(18px);
  animation: story-breathe 5s ease-in-out infinite;
}

.story-cover-content { position: relative; z-index: 1; max-width: 820px; }

.story-eyebrow {
  display: block;
  margin-bottom: 22px;
  color: var(--color-accent);
  font: 600 .72rem/1 var(--font-mono);
  letter-spacing: .34em;
}

.story-cover h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 7.5rem);
  font-weight: 720;
  letter-spacing: -.065em;
  line-height: .96;
  background: linear-gradient(135deg, var(--color-text) 20%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.story-cover-content > p {
  max-width: 560px;
  margin: 28px auto 0;
  color: var(--color-text-secondary);
  font-size: clamp(.95rem, 1.4vw, 1.12rem);
  line-height: 1.9;
  letter-spacing: .08em;
}

.story-start {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 38px;
  padding: 12px 18px;
  border: 1px solid var(--color-border-hover);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  background: color-mix(in srgb, var(--color-bg-soft) 68%, transparent);
  backdrop-filter: blur(12px);
  transition: border-color .3s, color .3s, transform .3s;
}

.story-start svg { width: 17px; height: 17px; }
.story-start:hover { color: var(--color-accent); border-color: var(--color-accent); transform: translateY(3px); }

.story-scroll-hint {
  position: absolute;
  bottom: 26px;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--color-text-muted);
  font-size: 11px;
  letter-spacing: .14em;
  transform: translateX(-50%);
}

.story-scroll-hint span { width: 25px; height: 1px; background: currentColor; animation: story-hint 1.8s ease-in-out infinite; }

.story-chapter::before {
  content: "STORY";
  position: absolute;
  right: -1vw;
  bottom: -4vw;
  z-index: -1;
  color: rgba(var(--color-accent-rgb), .035);
  font: 800 clamp(7rem, 22vw, 20rem)/.8 var(--font-sans);
  letter-spacing: -.08em;
  pointer-events: none;
}

.story-chapter-bg {
  position: absolute;
  inset: 12% -10% auto auto;
  z-index: -1;
  width: min(48vw, 650px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(var(--color-accent-rgb), .06);
  filter: blur(90px);
}

.story-chapter-inner {
  width: min(1420px, 100%);
  min-height: calc(100svh - var(--header-height) - 88px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(250px, .72fr) minmax(0, 1.55fr);
  align-items: center;
  gap: clamp(28px, 3.5vw, 56px);
}

.story-copy { align-self: center; min-width: 0; }

.story-kicker { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; color: var(--color-text-muted); }
.story-kicker span { color: var(--color-accent); font: 700 .76rem/1 var(--font-mono); letter-spacing: .12em; }
.story-kicker i { width: 38px; height: 1px; background: var(--color-border-hover); }
.story-kicker time { font: 500 .72rem/1 var(--font-mono); letter-spacing: .09em; }

.story-copy h2 {
  margin: 0;
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 4.6vw, 5rem);
  line-height: 1.06;
  letter-spacing: -.045em;
}

.story-description {
  max-width: 570px;
  margin: 26px 0 0;
  color: var(--color-text-secondary);
  font-size: clamp(.95rem, 1.2vw, 1.08rem);
  line-height: 2;
  white-space: pre-line;
}

.story-description.is-typing::after {
  content: "";
  display: inline-block;
  width: 1px;
  height: 1.15em;
  margin-left: 4px;
  vertical-align: -.18em;
  background: var(--color-accent);
  animation: story-caret .72s step-end infinite;
}

.story-pair-count { margin-top: 25px; color: var(--color-text-muted); font-size: .76rem; letter-spacing: .08em; }
.story-pair-count span { color: var(--color-accent); font-family: var(--font-mono); font-weight: 700; }

.story-moments {
  min-width: 0;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 100%);
  align-items: center;
  gap: clamp(18px, 2.3vw, 34px);
  padding: 28px 10px 34px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--color-accent-rgb), .35) transparent;
}

@media (min-width: 901px) {
  .story-moments {
    position: relative;
    left: -56px;
    width: 100%;
  }
}

.story-moment {
  margin: 0;
  scroll-snap-align: center;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1.25s var(--story-ease), transform 1.45s var(--story-ease);
  transition-delay: calc(var(--moment-order) * 150ms + 480ms);
}

.story-slide.is-active .story-moment { opacity: 1; transform: none; }
.story-moment:nth-child(even) { transform: translateY(-24px); }
.story-slide.is-active .story-moment:nth-child(even) { transform: translateY(14px); }

.story-image-gallery {
  position: relative;
  min-width: 0;
}

.story-image-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 100%;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  border-radius: clamp(14px, 2vw, 24px);
}

.story-image-track::-webkit-scrollbar { display: none; }

.story-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: clamp(14px, 2vw, 24px);
  background: var(--color-bg-soft);
  box-shadow: 0 25px 60px rgba(0, 0, 0, .2);
  scroll-snap-align: center;
  scroll-snap-stop: always;
}

.story-image-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, .22), transparent 38%);
  pointer-events: none;
}

.story-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: blur(16px) saturate(.75);
  transform: scale(1.08);
  opacity: .55;
  transition: filter 2s var(--story-ease), transform 2s var(--story-ease), opacity 1.5s;
}

.story-slide.is-active .story-image-wrap img.is-loaded { filter: blur(0) saturate(1); transform: scale(1.001); opacity: 1; }
.story-image-wrap:hover img { filter: brightness(1.04) saturate(1.04); transform: scale(1.001); }

.story-image-index {
  position: absolute;
  right: 14px;
  bottom: 13px;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(255,255,255,.32);
  border-radius: 50%;
  color: #fff;
  background: rgba(0,0,0,.2);
  backdrop-filter: blur(8px);
  font: 600 .7rem/1 var(--font-mono);
}

.story-gallery-arrow {
  position: absolute;
  top: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.34);
  border-radius: 50%;
  color: #fff;
  background: rgba(15, 12, 14, .38);
  backdrop-filter: blur(10px);
  transform: translateY(-50%);
  transition: opacity .3s ease, background .3s ease, transform .3s ease;
}

.story-gallery-arrow svg { width: 17px; height: 17px; stroke-width: 1.8; }
.story-gallery-arrow.is-prev { left: 11px; }
.story-gallery-arrow.is-next { right: 11px; }
.story-gallery-arrow:hover { background: rgba(var(--color-accent-rgb), .72); transform: translateY(-50%) scale(1.08); }
.story-image-gallery.is-single .story-gallery-arrow { display: none; }
.story-gallery-arrow:disabled { opacity: .28; cursor: default; }

.story-moment figcaption { padding: 17px 6px 0; }
.story-moment time { color: var(--color-accent); font: 600 .7rem/1.3 var(--font-mono); letter-spacing: .09em; }
.story-moment figcaption p { margin: 9px 0 0; color: var(--color-text-secondary); font-size: .9rem; line-height: 1.75; white-space: pre-line; }

.story-empty-moments { padding: 45px; border: 1px dashed var(--color-border-hover); border-radius: var(--radius-xl); text-align: center; color: var(--color-text-muted); }

.story-empty { display: grid; place-items: center; }
.story-empty-card { max-width: 520px; padding: 50px; border: 1px solid var(--color-border); border-radius: var(--radius-xl); text-align: center; background: color-mix(in srgb, var(--color-bg-soft) 76%, transparent); }
.story-empty-card svg { width: 48px; margin: 0 auto 20px; color: var(--color-accent); }
.story-empty-card h2 { margin: 0; font-size: 1.6rem; }
.story-empty-card p { margin: 12px 0 0; color: var(--color-text-secondary); line-height: 1.8; }

.story-nav {
  position: fixed;
  z-index: 30;
  right: clamp(14px, 2.5vw, 38px);
  top: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 13px;
  padding: 12px 9px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--color-bg) 74%, transparent);
  backdrop-filter: blur(16px);
  transform: translateY(-50%);
}

.story-nav button { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; color: var(--color-text-muted); transition: color .2s, background .2s; }
.story-nav button:hover:not(:disabled) { color: var(--color-accent); background: rgba(var(--color-accent-rgb), .1); }
.story-nav button:disabled { opacity: .25; cursor: default; }
.story-nav svg { width: 17px; height: 17px; stroke-width: 1.7; }
.story-progress { position: relative; width: 1px; height: 76px; overflow: hidden; background: var(--color-border-hover); }
.story-progress span { position: absolute; inset: 0; background: var(--color-accent); transform: scaleY(0); transform-origin: top; transition: transform .55s var(--story-ease); }
.story-counter { display: flex; flex-direction: column; align-items: center; color: var(--color-text-muted); font: 600 .59rem/1.15 var(--font-mono); }
.story-counter b { color: var(--color-text); font-size: .7rem; }
.story-counter i { font-style: normal; opacity: .35; }

/* 每章入场方式：位移、模糊和翻页幅度刻意拉开，让随机结果更容易被感知 */
.story-chapter .story-copy,
.story-chapter .story-moments,
.story-chapter .story-empty-moments {
  opacity: 0;
  transition: opacity 1.25s var(--story-ease), transform 1.55s var(--story-ease), filter 1.6s var(--story-ease);
}
.story-chapter .story-moments,
.story-chapter .story-empty-moments { transition-delay: .18s; }
.story-chapter.anim-blur .story-copy { filter: blur(30px); transform: scale(.9); }
.story-chapter.anim-blur .story-moments,
.story-chapter.anim-blur .story-empty-moments { filter: blur(38px); transform: scale(1.08); }
.story-chapter.anim-slide-left .story-copy { transform: translateX(-145px); }
.story-chapter.anim-slide-left .story-moments,
.story-chapter.anim-slide-left .story-empty-moments { transform: translateX(165px); }
.story-chapter.anim-slide-right .story-copy { transform: translateX(145px); }
.story-chapter.anim-slide-right .story-moments,
.story-chapter.anim-slide-right .story-empty-moments { transform: translateX(-165px); }
.story-chapter.anim-page-turn { perspective: 1400px; }
.story-chapter.anim-page-turn .story-chapter-inner { opacity: 0; filter: brightness(.72); transform: perspective(1500px) rotateY(-52deg) translateX(-13%) scale(.94); transform-origin: left center; transition: opacity 1.25s, filter 1.7s, transform 1.75s var(--story-ease); }
.story-chapter.anim-page-turn .story-copy,
.story-chapter.anim-page-turn .story-moments { opacity: 1; }
.story-chapter.anim-typewriter .story-copy { transform: translateY(42px); }
.story-chapter.anim-typewriter .story-moments,
.story-chapter.anim-typewriter .story-empty-moments { transform: scale(.9) translateY(55px); }
.story-chapter.is-active .story-copy,
.story-chapter.is-active .story-moments,
.story-chapter.is-active .story-empty-moments { opacity: 1; filter: none; transform: none; }
.story-chapter.anim-page-turn.is-active .story-chapter-inner { opacity: 1; filter: none; transform: none; }

/* 同步歌词：从左向右写入，旧歌词从右向左消散 */
.story-lyrics {
  position: fixed;
  z-index: 44;
  top: calc(var(--header-height) + 18px);
  left: clamp(18px, 3.4vw, 56px);
  width: min(620px, calc(100vw - 150px));
  min-height: 76px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .7s ease, transform .8s var(--story-ease);
}

.story-lyrics.is-visible { opacity: 1; transform: none; }

.story-lyrics-mark {
  display: block;
  margin-bottom: 10px;
  color: var(--color-accent);
  font: 700 .56rem/1 var(--font-mono);
  letter-spacing: .34em;
  opacity: .65;
}

.story-lyrics-stage { position: relative; min-height: 94px; }

.story-lyric-line {
  position: absolute;
  inset: 0 auto auto 0;
  display: block;
  max-width: 100%;
  overflow: hidden;
  color: var(--color-text);
  white-space: normal;
  text-overflow: clip;
  opacity: 1;
}

.story-lyric-text {
  display: block;
  max-width: 100%;
  overflow: hidden;
  font-family: "Playfair Display", var(--font-serif);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.story-lyric-text.is-original {
  color: var(--color-text);
  font-size: clamp(1.15rem, 2.15vw, 2rem);
  font-style: italic;
  font-weight: 680;
  line-height: 1.4;
  letter-spacing: .06em;
  text-shadow: 0 0 16px rgba(var(--color-accent-rgb), .42), 0 4px 18px rgba(0, 0, 0, .22);
}

.story-lyric-text.is-translation {
  margin-top: 5px;
  color: color-mix(in srgb, var(--color-accent) 76%, var(--color-text));
  font-size: clamp(.78rem, 1.2vw, 1rem);
  font-style: normal;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: .1em;
  text-shadow: 0 0 12px rgba(var(--color-accent-rgb), .26);
}

.story-lyric-char {
  display: inline-block;
  opacity: 1;
  filter: none;
  transform: none;
  will-change: opacity, filter, transform;
}

.story-lyric-line.is-current .story-lyric-text.is-original { animation: story-lyric-shimmer 5s 1.8s ease-in-out infinite; }

/* 页面背景音乐：固定在右上角，默认静音，仅由访客手动开启 */
.story-music {
  position: fixed !important;
  z-index: 45 !important;
  top: calc(var(--header-height) + 16px);
  right: clamp(14px, 2.5vw, 38px);
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 48px;
  height: auto;
}

.story-music-toggle {
  position: relative;
  display: grid !important;
  place-items: center;
  width: 38px !important;
  min-width: 38px !important;
  max-width: 38px !important;
  height: 38px !important;
  min-height: 38px !important;
  max-height: 38px !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: 50% !important;
  color: var(--color-text-secondary);
  background: color-mix(in srgb, var(--color-bg) 78%, transparent);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .12);
  backdrop-filter: blur(16px);
  transition: border-color .35s, color .35s, background .35s, transform .35s;
}

.story-music-toggle:hover { border-color: rgba(var(--color-accent-rgb), .55); transform: translateY(-2px); }
.story-music-toggle.is-playing { color: var(--color-accent); border-color: rgba(var(--color-accent-rgb), .5); background: color-mix(in srgb, var(--color-bg) 72%, rgba(var(--color-accent-rgb), .12)); }

.story-music-toggle svg {
  display: block !important;
  width: 17px !important;
  min-width: 17px !important;
  max-width: 17px !important;
  height: 17px !important;
  min-height: 17px !important;
  max-height: 17px !important;
  margin: 0 !important;
  stroke-width: 1.8;
  transform-origin: center;
}

.story-music-toggle:not(.is-playing)::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 18px;
  width: 21px;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-bg) 60%, transparent);
  transform: rotate(45deg);
  pointer-events: none;
}

.story-music-hint {
  display: block;
  margin-top: 7px;
  color: var(--color-text-muted);
  font: 500 .56rem/1 var(--font-sans);
  white-space: nowrap;
  pointer-events: none;
  transform: translateX(.08em);
}

.story-music-hint-char {
  display: inline-block;
  margin-right: .16em;
  opacity: .48;
  filter: blur(0);
  transform: translateX(0) translateY(0);
  transition: opacity .62s var(--story-ease), filter .62s var(--story-ease), transform .62s var(--story-ease);
  transition-delay: calc(var(--hint-char-index) * 95ms);
}

.story-music-hint.is-hidden .story-music-hint-char {
  opacity: 0;
  filter: blur(6px);
  transform: translateX(-4px) translateY(2px);
  transition-delay: 0ms;
}

.story-music-toggle.is-playing svg { animation: story-note-pulse 1.8s ease-in-out infinite; }

@keyframes story-breathe { 50% { transform: scale(1.13); opacity: .7; } }
@keyframes story-hint { 50% { transform: scaleX(.55); opacity: .45; } }
@keyframes story-caret { 50% { opacity: 0; } }
@keyframes story-note-pulse { 50% { transform: scale(1.12); } }
@keyframes story-lyric-shimmer { 50% { text-shadow: 0 0 24px rgba(var(--color-accent-rgb), .58); } }

@media (max-width: 900px) {
  .story-slide { padding-inline: 22px; }
  .story-chapter-inner { grid-template-columns: 1fr; align-content: center; gap: 18px; padding-block: 24px; }
  .story-copy { padding-right: 42px; }
  .story-copy h2 { font-size: clamp(2rem, 8vw, 3.6rem); }
  .story-description { margin-top: 14px; line-height: 1.75; }
  .story-pair-count { margin-top: 12px; }
  .story-moments { grid-auto-columns: minmax(235px, 72vw); padding-block: 12px 22px; }
  .story-image-wrap { aspect-ratio: 16 / 11; }
  .story-moment:nth-child(even), .story-slide.is-active .story-moment:nth-child(even) { transform: none; }
  .story-nav { right: 9px; }
  .story-music { right: 9px; }
  .story-lyrics { left: 22px; width: min(560px, calc(100vw - 92px)); }
}

@media (max-width: 560px) {
  .story-slide { padding-top: calc(var(--header-height) + 24px); padding-bottom: 24px; }
  .story-cover::before { width: 104vw; }
  .story-cover::after { width: 78vw; }
  .story-cover h1 { font-size: clamp(3rem, 17vw, 5rem); }
  .story-cover-content > p { margin-top: 20px; line-height: 1.75; }
  .story-start { margin-top: 28px; }
  .story-chapter-inner { min-height: calc(100svh - var(--header-height) - 48px); }
  .story-kicker { margin-bottom: 14px; }
  .story-copy { padding-right: 28px; }
  .story-description { display: -webkit-box; overflow: hidden; -webkit-line-clamp: 4; -webkit-box-orient: vertical; }
  .story-moments { grid-auto-columns: 74vw; }
  .story-moment figcaption p { display: -webkit-box; overflow: hidden; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }
  .story-nav { gap: 8px; padding: 8px 6px; }
  .story-progress { height: 50px; }
  .story-lyrics { top: calc(var(--header-height) + 13px); left: 16px; width: calc(100vw - 82px); min-height: 88px; }
  .story-lyrics-mark { margin-bottom: 7px; font-size: .5rem; }
  .story-lyric-text.is-original { font-size: 1.05rem; }
  .story-lyric-text.is-translation { font-size: .74rem; }
}

@media (prefers-reduced-motion: reduce) {
  .story-book { scroll-behavior: auto !important; }
  .story-cover-glow, .story-scroll-hint span, .story-description.is-typing::after, .story-music-toggle svg, .story-lyric-line, .story-lyric-char { animation: none !important; }
  .story-music-hint-char { transition: none !important; }
  .story-lyric-line.is-current .story-lyric-char { opacity: 1; filter: none; transform: none; }
  .story-chapter .story-copy, .story-chapter .story-chapter-inner, .story-moment, .story-image-wrap img { opacity: 1 !important; filter: none !important; transform: none !important; transition: none !important; }
}