/* ============================================================
   像素宇宙 PIXEL ODYSSEY — 数字艺术沉浸展
   ============================================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #050508;
  --ink: #eae6da;
  --ink-dim: rgba(234, 230, 218, .55);
  --gold: #f5c76a;
  --red: #ff3b5c;
  --cyan: #59e3ff;
  --violet: #a78bfa;
  --serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --sans: 'Space Grotesk', 'PingFang SC', 'Helvetica Neue', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--gold); color: #050508; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* ---------- 画布与氛围层 ---------- */

#stage { position: fixed; inset: 0; z-index: 0; display: block; }

.grain {
  position: fixed; inset: -100px; z-index: 40; pointer-events: none; opacity: .06;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  animation: grain 7s steps(8) infinite;
}
@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  12% { transform: translate(-40px, 30px); }
  25% { transform: translate(30px, -50px); }
  37% { transform: translate(-30px, -30px); }
  50% { transform: translate(50px, 40px); }
  62% { transform: translate(-50px, 10px); }
  75% { transform: translate(40px, -20px); }
  87% { transform: translate(-20px, 50px); }
}

/* ---------- 自定义光标 ---------- */

.cursor-dot, .cursor-ring {
  position: fixed; left: 0; top: 0; z-index: 9999;
  pointer-events: none; border-radius: 50%;
}
.cursor-dot {
  width: 6px; height: 6px; margin: -3px 0 0 -3px;
  background: var(--gold); box-shadow: 0 0 12px rgba(245, 199, 106, .9);
}
.cursor-ring {
  width: 36px; height: 36px; margin: -18px 0 0 -18px;
  border: 1px solid rgba(245, 199, 106, .5);
  transition: width .3s, height .3s, margin .3s, border-color .3s;
}
.cursor-ring.is-hover {
  width: 64px; height: 64px; margin: -32px 0 0 -32px;
  border-color: rgba(245, 199, 106, .95);
}
@media (pointer: coarse) { .cursor-dot, .cursor-ring { display: none; } }

/* ---------- 顶栏 ---------- */

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 4vw;
  transform: translateY(-110%);
  transition: transform .7s cubic-bezier(.2, .7, .2, 1);
  background: rgba(5, 5, 8, .55);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
body.is-scrolled .site-header { transform: none; }
.site-header__logo { font-weight: 900; letter-spacing: .18em; font-size: .95rem; }
.site-header__logo span {
  font-family: var(--sans); font-weight: 300; color: var(--ink-dim);
  letter-spacing: .3em; font-size: .68rem; margin-left: .7em;
}
.site-header nav { display: flex; gap: 2.2rem; font-size: .85rem; letter-spacing: .2em; color: var(--ink-dim); }
.site-header nav a { transition: color .3s; }
.site-header nav a:hover { color: var(--gold); }

/* ---------- 章节指示点 ---------- */

.dots {
  position: fixed; right: 2vw; top: 50%; transform: translateY(-50%);
  z-index: 30; display: flex; flex-direction: column; gap: 1.1rem;
}
.dots button {
  position: relative; width: 10px; height: 10px; border-radius: 50%;
  border: 1px solid rgba(234, 230, 218, .4); transition: .3s;
}
.dots button.is-active {
  background: var(--gold); border-color: var(--gold);
  box-shadow: 0 0 10px rgba(245, 199, 106, .8);
}
.dots button span {
  position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  font-family: var(--sans); font-size: .68rem; letter-spacing: .2em;
  color: var(--ink-dim); opacity: 0; transition: .3s; white-space: nowrap;
}
.dots button:hover span { opacity: 1; }
@media (max-width: 768px) { .dots { display: none; } }

/* ---------- 通用面板 ---------- */

.panel {
  position: relative; z-index: 2;
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 14vh 8vw;
}

.reveal {
  opacity: 0; transform: translateY(46px);
  transition: opacity 1s ease, transform 1.1s cubic-bezier(.16, .8, .24, 1);
  transition-delay: var(--d, 0s);
}
.in-view .reveal { opacity: 1; transform: none; }

/* ---------- 序章 Hero ---------- */

.hero { align-items: center; text-align: center; }

.hero__prologue {
  font-size: clamp(1rem, 2.2vw, 1.4rem);
  letter-spacing: .5em; text-indent: .5em;
  color: var(--ink-dim);
  opacity: 0; transition: opacity 1.6s ease .5s;
}
body.is-loaded .hero__prologue { opacity: 1; }

.hero__title {
  font-size: clamp(3.6rem, 13vw, 10.5rem);
  font-weight: 900; letter-spacing: .08em; line-height: 1.1;
  margin: 2.5rem 0 1.2rem;
  text-shadow: 0 0 60px rgba(245, 199, 106, .35);
}
.hero__title span {
  display: inline-block;
  opacity: 0; transform: translateY(70px); filter: blur(14px);
  transition: opacity 1.1s ease, transform 1.3s cubic-bezier(.16, .8, .24, 1), filter 1.1s ease;
  transition-delay: calc(var(--i) * .13s);
}
.hero.is-born .hero__title span { opacity: 1; transform: none; filter: blur(0); }

.hero__en {
  font-family: var(--sans); font-weight: 300;
  letter-spacing: .9em; text-indent: .9em;
  font-size: clamp(.8rem, 1.6vw, 1.05rem); color: var(--gold);
  opacity: 0; transition: opacity 1.2s ease 1s;
}
.hero__sub {
  margin-top: 1.6rem; color: var(--ink-dim);
  letter-spacing: .3em; font-size: clamp(.85rem, 1.8vw, 1.05rem);
  opacity: 0; transition: opacity 1.2s ease 1.35s;
}
.hero__meta {
  margin-top: 3rem; font-family: var(--sans);
  font-size: .8rem; letter-spacing: .25em; color: var(--ink-dim);
  opacity: 0; transition: opacity 1.2s ease 1.7s;
}
.hero.is-born .hero__en,
.hero.is-born .hero__sub,
.hero.is-born .hero__meta { opacity: 1; }

.scroll-hint {
  position: absolute; bottom: 4.5vh; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .7rem;
  font-family: var(--sans); font-size: .68rem; letter-spacing: .4em; color: var(--ink-dim);
  opacity: 0; transition: opacity 1.2s ease 2.2s;
}
.hero.is-born .scroll-hint { opacity: .8; }
.scroll-hint i {
  display: block; width: 1px; height: 44px;
  background: linear-gradient(var(--gold), transparent);
  animation: drop 1.8s ease-in-out infinite;
}
@keyframes drop {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 跑马灯 ---------- */

.marquee {
  position: relative; z-index: 2; overflow: hidden;
  border-block: 1px solid rgba(255, 255, 255, .08);
  padding: 1.1rem 0;
  background: rgba(5, 5, 8, .5);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.marquee__track {
  display: flex; width: max-content; white-space: nowrap;
  font-family: var(--sans); font-size: .78rem;
  letter-spacing: .35em; color: var(--ink-dim);
  animation: marquee 30s linear infinite;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 章节 ---------- */

.chapter__inner { max-width: 640px; }
.chapter--right .chapter__inner { margin-left: auto; text-align: right; }
.chapter--wide .chapter__inner { max-width: none; }

.chapter__num {
  font-family: var(--sans); font-weight: 700;
  font-size: clamp(5rem, 16vw, 12rem); line-height: .9;
  color: transparent; -webkit-text-stroke: 1px rgba(234, 230, 218, .16);
  user-select: none;
}
.chapter h2 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 900; letter-spacing: .12em;
  margin: 1.2rem 0 1.6rem;
}
.chapter h2 em {
  display: block; font-family: var(--sans); font-style: normal; font-weight: 300;
  font-size: .32em; letter-spacing: .6em; color: var(--gold); margin-top: .7rem;
}
.chapter[data-mode="chaos"] h2 em { color: var(--red); }
.chapter[data-mode="resonance"] h2 em { color: var(--cyan); }
.chapter[data-mode="constellation"] h2 em { color: var(--violet); }

.chapter p {
  color: var(--ink-dim); line-height: 2.1; letter-spacing: .12em;
  font-size: clamp(.92rem, 1.6vw, 1.05rem);
}

/* 故障标题 */
.glitch { position: relative; display: inline-block; }
.in-view .glitch::before, .in-view .glitch::after {
  content: attr(data-text);
  position: absolute; inset: 0; overflow: hidden; opacity: 0;
}
.in-view .glitch::before {
  color: var(--red); clip-path: inset(0 0 52% 0);
  animation: glitch-a 2.8s infinite steps(2, end);
}
.in-view .glitch::after {
  color: var(--cyan); clip-path: inset(55% 0 0 0);
  animation: glitch-b 3.4s infinite steps(2, end);
}
@keyframes glitch-a {
  0%, 86%, 100% { transform: none; opacity: 0; }
  88% { transform: translate(-7px, 2px); opacity: .85; }
  92% { transform: translate(6px, -2px); opacity: .85; }
  96% { transform: translate(-4px, 1px); opacity: .85; }
}
@keyframes glitch-b {
  0%, 80%, 100% { transform: none; opacity: 0; }
  83% { transform: translate(7px, -2px); opacity: .85; }
  89% { transform: translate(-6px, 2px); opacity: .85; }
  95% { transform: translate(4px, -1px); opacity: .85; }
}

/* ---------- 作品画廊 ---------- */

.gallery {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem; margin-top: 4rem; width: 100%;
}
.card {
  position: relative; overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .09);
  background: rgba(255, 255, 255, .02);
  transition: transform .6s cubic-bezier(.16, .8, .24, 1), box-shadow .6s, border-color .6s;
}
.card:hover {
  transform: translateY(-10px);
  border-color: rgba(245, 199, 106, .45);
  box-shadow: 0 30px 60px rgba(0, 0, 0, .55), 0 0 50px rgba(245, 199, 106, .12);
}
.card__art {
  aspect-ratio: 4 / 3.4;
  background-size: 220% 220%;
  animation: art-drift 16s ease-in-out infinite alternate;
  transition: filter .6s;
}
.card:hover .card__art { filter: saturate(1.35) brightness(1.12); }
@keyframes art-drift { from { background-position: 0% 0%; } to { background-position: 100% 100%; } }

.card__info {
  padding: 1.3rem 1.4rem 1.5rem;
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
}
.card__info h3 { font-size: 1.05rem; letter-spacing: .1em; }
.card__info small {
  font-family: var(--sans); color: var(--ink-dim);
  font-size: .68rem; letter-spacing: .18em; text-align: right; line-height: 1.8;
}

.art-1 { background-image: radial-gradient(circle at 30% 30%, rgba(255, 217, 138, .95), transparent 55%), radial-gradient(circle at 72% 78%, rgba(255, 122, 79, .8), transparent 50%), linear-gradient(160deg, #1a0f08, #2b1608); }
.art-2 { background-image: repeating-linear-gradient(0deg, rgba(255, 255, 255, .06) 0 1px, transparent 1px 9px), linear-gradient(160deg, #03293d, #0a5f7a 55%, #59e3ff 130%); }
.art-3 { background-image: conic-gradient(from 200deg at 62% 38%, #ff3b5c, #2b0a12 42%, #ff9a3d 78%, #12060a); }
.art-4 { background-image: radial-gradient(circle at 50% 115%, rgba(61, 220, 151, .9), transparent 60%), repeating-linear-gradient(90deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 12px), linear-gradient(#06120d, #0a1f16); }
.art-5 { background-image: repeating-radial-gradient(circle at 50% 46%, rgba(167, 139, 250, .5) 0 1.5px, transparent 1.5px 16px), radial-gradient(circle at 50% 46%, rgba(167, 139, 250, .25), transparent 65%), #0d0a1a; }
.art-6 { background-image: repeating-conic-gradient(from 45deg at 50% 50%, #0c0c14 0 25%, #232338 0 50%), radial-gradient(circle at 50% 50%, rgba(89, 227, 255, .28), transparent 70%); }

.gallery__note {
  margin-top: 2.5rem; font-family: var(--sans);
  font-size: .72rem; letter-spacing: .3em; color: var(--ink-dim);
}

/* ---------- 票务 ---------- */

.tickets__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 5rem; margin-top: 4rem; align-items: start;
}
@media (max-width: 900px) { .tickets__grid { grid-template-columns: 1fr; gap: 3rem; } }

.info-list { display: flex; flex-direction: column; }
.info-list > div {
  display: flex; justify-content: space-between; gap: 2rem;
  padding: 1.15rem 0; border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.info-list dt {
  font-family: var(--sans); font-size: .72rem; letter-spacing: .35em;
  color: var(--ink-dim); padding-top: .3em; white-space: nowrap;
}
.info-list dd { letter-spacing: .1em; text-align: right; line-height: 1.9; }

.price-stack { display: flex; flex-direction: column; gap: 1.2rem; }
.price-card {
  position: relative;
  display: flex; justify-content: space-between; align-items: center; gap: 1.5rem;
  padding: 1.5rem 1.8rem; border: 1px solid rgba(255, 255, 255, .1);
  transition: border-color .5s, transform .5s;
}
.price-card:hover { border-color: rgba(245, 199, 106, .5); transform: translateX(8px); }
.price-card--featured {
  border-color: rgba(245, 199, 106, .55);
  background: linear-gradient(120deg, rgba(245, 199, 106, .08), transparent 60%);
}
.price-card__name { letter-spacing: .15em; }
.price-card__name small {
  display: block; font-family: var(--sans); color: var(--ink-dim);
  font-size: .68rem; letter-spacing: .2em; margin-top: .5rem;
}
.price-card__amount {
  font-family: var(--sans); font-weight: 700; font-size: 1.9rem;
  color: var(--gold); white-space: nowrap;
}
.price-card__amount small { font-size: .5em; font-weight: 300; color: var(--ink-dim); }
.tag {
  position: absolute; top: -1px; right: -1px;
  font-family: var(--sans); font-size: .6rem; letter-spacing: .25em;
  background: var(--gold); color: #050508; padding: .35em .9em;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-block; isolation: isolate;
  font-family: var(--sans); letter-spacing: .35em; font-size: .8rem;
  padding: 1.1em 2.8em; border: 1px solid rgba(245, 199, 106, .6);
  color: var(--gold); position: relative; overflow: hidden;
  transition: color .45s; margin-top: 1.4rem; text-align: center;
}
.btn::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform .45s cubic-bezier(.16, .8, .24, 1);
}
.btn:hover { color: #050508; }
.btn:hover::before { transform: scaleX(1); }
.btn--small { padding: .7em 1.6em; margin: 0; font-size: .7rem; }
.price-stack .btn { align-self: stretch; }

/* ---------- 页脚 ---------- */

.site-footer {
  position: relative; z-index: 2;
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 3rem 8vw; border-top: 1px solid rgba(255, 255, 255, .07);
  font-family: var(--sans); font-size: .7rem; letter-spacing: .25em; color: var(--ink-dim);
}

/* ---------- 响应式 ---------- */

@media (max-width: 768px) {
  .site-header nav { display: none; }
  .panel { padding: 12vh 7vw; }
  .hero__title { letter-spacing: .04em; }
  .chapter--right .chapter__inner { margin-left: 0; text-align: left; }
  .info-list dd { text-align: left; }
  .info-list > div { flex-direction: column; gap: .4rem; }
}

/* ---------- 减少动态 ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, .hero__title span, .hero__prologue, .hero__en, .hero__sub, .hero__meta, .scroll-hint {
    opacity: 1 !important; transform: none !important; filter: none !important;
  }
}