:root {
  color-scheme: light;
  --ink: #2d2925;
  --muted: #766e65;
  --paper: #fbf8f2;
  --paper-deep: #f1e9de;
  --line: rgba(90, 68, 49, .16);
  --accent: #a26145;
  --accent-dark: #75412f;
  --accent-soft: rgba(162, 97, 69, .13);
  --shadow: 0 28px 70px rgba(72, 50, 34, .12);
  --radius-lg: 2rem;
  --radius-md: 1.25rem;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
}

* { box-sizing: border-box; }

html { min-width: 320px; scroll-behavior: smooth; }

body {
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(circle at 12% 8%, rgba(255,255,255,.68), transparent 34rem),
    radial-gradient(circle at 90% 86%, var(--accent-soft), transparent 32rem),
    var(--paper-deep);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: .3;
  background-image: radial-gradient(rgba(71, 49, 35, .12) .55px, transparent .55px);
  background-size: 7px 7px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

a { color: inherit; }

button, input { font: inherit; }

button { -webkit-tap-highlight-color: transparent; }

.shell {
  width: min(100% - 2rem, 1120px);
  margin: 0 auto;
  padding: clamp(1.3rem, 5vw, 3.5rem) 0 clamp(2.5rem, 7vw, 5.5rem);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: clamp(2.6rem, 7vw, 5.3rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--serif);
  font-size: 1.08rem;
}

.brand-name {
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: .08em;
}

.top-note {
  color: var(--muted);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.collection-header {
  max-width: 42rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  color: var(--accent-dark);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 1.8rem;
  height: 1px;
  content: "";
  background: currentColor;
}

h1, h2, p { margin: 0; }

.collection-header h1 {
  max-width: 9ch;
  margin-top: .8rem;
  font-family: var(--serif);
  font-size: clamp(2.75rem, 8vw, 5.8rem);
  font-weight: 600;
  line-height: .98;
  letter-spacing: -.08em;
}

.collection-header p {
  max-width: 31rem;
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.track-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.track-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: .9rem;
  border: 1px solid rgba(90, 68, 49, .14);
  border-radius: var(--radius-lg);
  background: rgba(251, 248, 242, .76);
  box-shadow: 0 15px 40px rgba(72, 50, 34, .06);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}

.track-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line); }
.track-card:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow); }

.track-card__art { margin-bottom: 1.2rem; }

.mini-art {
  position: relative;
  display: grid;
  min-height: 17rem;
  place-items: center;
  overflow: hidden;
  border-radius: calc(var(--radius-lg) - .35rem);
  color: #f9f5ed;
  isolation: isolate;
}

.mini-art::before, .mini-art::after { position: absolute; content: ""; pointer-events: none; }
.mini-art::before { width: 70%; aspect-ratio: 1; border: 1px solid rgba(255,255,255,.38); border-radius: 50%; transform: translate(16%, 16%); }
.mini-art::after { width: 120%; height: 1px; background: rgba(255,255,255,.27); transform: rotate(-33deg); }
.mini-art--warm { background: linear-gradient(145deg, #c89a6e, #9b6248 51%, #4b382f); }
.mini-art--ink { background: linear-gradient(145deg, #c9b08b, #77756a 45%, #343c38); }
.mini-art--jade { background: linear-gradient(145deg, #bda782, #53786d 51%, #263d3a); }

.mini-art__title {
  position: relative;
  z-index: 1;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  line-height: 1.25;
  letter-spacing: .12em;
  text-align: center;
  writing-mode: vertical-rl;
}

.mini-art__seal {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 50%;
  font-family: var(--serif);
}

.track-card__body { display: flex; flex: 1; flex-direction: column; padding: 0 .45rem .35rem; }
.track-card h2 { font-family: var(--serif); font-size: 1.5rem; font-weight: 600; letter-spacing: -.04em; }
.track-card__meta { margin-top: .3rem; color: var(--muted); font-size: .82rem; }

.track-card__link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3rem;
  margin-top: 1.15rem;
  padding: 0 .95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-size: .86rem;
  text-decoration: none;
  transition: background .25s ease, color .25s ease, transform .2s ease;
}

.track-card__link::after { content: "↗"; color: var(--accent); font-size: 1.1rem; }
.track-card__link:hover { color: var(--paper); background: var(--ink); }
.track-card__link:active { transform: scale(.98); }

.collection-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: clamp(2.5rem, 7vw, 5rem);
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .75rem;
}

.detail-shell { max-width: 1040px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 2.75rem;
  color: var(--muted);
  font-size: .8rem;
  text-decoration: none;
}

.back-link::before { content: "←"; color: var(--accent); font-size: 1.05rem; }
.back-link:hover { color: var(--ink); }

.detail-grid {
  display: grid;
  grid-template-columns: minmax(260px, .92fr) minmax(320px, .8fr);
  align-items: center;
  gap: clamp(2rem, 8vw, 7rem);
  min-height: min(76dvh, 740px);
}

.art {
  position: relative;
  display: grid;
  aspect-ratio: 1;
  max-width: 480px;
  place-items: center;
  overflow: hidden;
  border-radius: 2.7rem;
  color: #faf4e9;
  isolation: isolate;
  box-shadow: var(--shadow);
}

.art::before, .art::after { position: absolute; content: ""; pointer-events: none; }
.art::before { inset: 8%; border: 1px solid rgba(255,255,255,.38); border-radius: 45% 55% 54% 46% / 48% 42% 58% 52%; transform: rotate(-22deg); }
.art::after { inset: -15%; border: 1px solid rgba(255,255,255,.19); border-radius: 50%; transform: rotate(35deg); }
.art--warm { background: radial-gradient(circle at 30% 18%, #d9b18b, transparent 32%), linear-gradient(145deg, #ae7151, #744936 56%, #3a2d27); }
.art--ink { background: radial-gradient(circle at 72% 17%, #d6bd96, transparent 31%), linear-gradient(145deg, #7c776d, #535b54 54%, #2e3532); }
.art--jade { background: radial-gradient(circle at 35% 17%, #d0b98d, transparent 30%), linear-gradient(145deg, #638a7b, #3e685e 54%, #233b38); }

.art__grain {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .22;
  background-image: radial-gradient(rgba(255,255,255,.7) .6px, transparent .6px);
  background-size: 8px 8px;
  mask-image: linear-gradient(135deg, black, transparent 75%);
}

.art__topline, .art__bottomline {
  position: absolute;
  z-index: 2;
  left: 2rem;
  right: 2rem;
  display: flex;
  justify-content: space-between;
  color: rgba(250,244,233,.72);
  font-size: .65rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.art__topline { top: 2rem; }
.art__bottomline { bottom: 2rem; }
.art__title { position: relative; z-index: 1; font-family: var(--serif); font-size: clamp(2.7rem, 7vw, 5.2rem); line-height: 1.15; letter-spacing: .12em; text-align: center; writing-mode: vertical-rl; }
.art__seal { position: absolute; z-index: 2; right: 2rem; top: 50%; display: grid; width: 3.5rem; height: 3.5rem; place-items: center; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; font-family: var(--serif); font-size: 1.35rem; transform: translateY(-50%); }

.detail-copy { max-width: 28rem; }
.detail-copy .eyebrow { margin-bottom: 1rem; }
.detail-copy h1 { font-family: var(--serif); font-size: clamp(2.7rem, 7vw, 5.4rem); font-weight: 600; line-height: 1; letter-spacing: -.09em; }
.detail-copy__sub { margin-top: 1rem; color: var(--muted); font-size: .95rem; line-height: 1.75; }

.player {
  margin-top: clamp(2rem, 5vw, 3.2rem);
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(251, 248, 242, .78);
  box-shadow: 0 14px 32px rgba(72, 50, 34, .07);
}

.player__top { display: flex; align-items: center; gap: .9rem; }
.play-button { display: grid; flex: 0 0 3.25rem; width: 3.25rem; height: 3.25rem; place-items: center; border: 0; border-radius: 50%; color: var(--paper); background: var(--ink); cursor: pointer; transition: transform .2s ease, background .2s ease; }
.play-button:hover { background: var(--accent-dark); }
.play-button:active { transform: scale(.94); }
.play-button:focus-visible, .seek:focus-visible, .back-link:focus-visible, .track-card__link:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.play-icon { width: 0; height: 0; margin-left: .18rem; border-top: .42rem solid transparent; border-bottom: .42rem solid transparent; border-left: .65rem solid currentColor; }
.pause-icon { display: flex; gap: .22rem; margin: 0; border: 0; }
.pause-icon::before, .pause-icon::after { width: .2rem; height: .78rem; content: ""; border-radius: 999px; background: currentColor; }
.player__label { min-width: 0; }
.player__label strong { display: block; font-size: .95rem; font-weight: 650; }
.player__label span { display: block; margin-top: .15rem; color: var(--muted); font-size: .76rem; }

.waveform { display: flex; align-items: center; justify-content: flex-end; gap: 3px; height: 2.6rem; margin-left: auto; opacity: .7; }
.waveform i { display: block; width: 2px; height: var(--h); border-radius: 999px; background: var(--accent); transform-origin: center; }
.is-playing .waveform i { animation: breathe 1.2s ease-in-out infinite alternate; animation-delay: calc(var(--i) * -90ms); }
@keyframes breathe { from { transform: scaleY(.55); } to { transform: scaleY(1); } }

.seek-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: .7rem; margin-top: 1rem; color: var(--muted); font-size: .72rem; font-variant-numeric: tabular-nums; }
.seek { width: 100%; height: 1.5rem; margin: 0; appearance: none; cursor: pointer; background: transparent; }
.seek::-webkit-slider-runnable-track { height: .28rem; border-radius: 99px; background: linear-gradient(to right, var(--accent) 0 var(--progress, 0%), rgba(90,68,49,.16) var(--progress, 0%) 100%); }
.seek::-moz-range-track { height: .28rem; border-radius: 99px; background: linear-gradient(to right, var(--accent) 0 var(--progress, 0%), rgba(90,68,49,.16) var(--progress, 0%) 100%); }
.seek::-webkit-slider-thumb { width: 1rem; height: 1rem; margin-top: -.36rem; appearance: none; border: 3px solid var(--paper); border-radius: 50%; background: var(--accent-dark); box-shadow: 0 1px 4px rgba(45,41,37,.24); }
.seek::-moz-range-thumb { width: .7rem; height: .7rem; border: 3px solid var(--paper); border-radius: 50%; background: var(--accent-dark); box-shadow: 0 1px 4px rgba(45,41,37,.24); }
.fallback-audio { width: 100%; margin-top: 1rem; }
.js .fallback-audio { display: none; }
.player__status { min-height: 1.25rem; margin-top: .7rem; color: var(--muted); font-size: .74rem; }

@media (max-width: 820px) {
  .track-grid { grid-template-columns: 1fr; max-width: 30rem; }
  .mini-art { min-height: 15rem; }
  .detail-grid { grid-template-columns: minmax(0, 1fr); gap: 2.4rem; padding-top: 2rem; }
  .art { width: min(100%, 34rem); margin: 0 auto; }
  .detail-copy { width: min(100%, 34rem); margin: 0 auto; }
}

@media (max-width: 480px) {
  .shell { width: min(100% - 1.25rem, 1120px); }
  .topbar { margin-bottom: 2.2rem; }
  .top-note { font-size: .62rem; letter-spacing: .1em; }
  .collection-header h1 { font-size: clamp(2.7rem, 16vw, 4.3rem); }
  .collection-footer { flex-direction: column; gap: .35rem; }
  .art { border-radius: 1.8rem; }
  .art__topline, .art__bottomline { left: 1.35rem; right: 1.35rem; }
  .art__topline { top: 1.35rem; }
  .art__bottomline { bottom: 1.35rem; }
  .art__seal { right: 1.35rem; width: 2.8rem; height: 2.8rem; }
  .player { padding: .9rem; }
  .waveform { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}