@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;600;700;900&family=Space+Mono:wght@400;700&display=swap');

:root {
  --ink: #090816;
  --night: #100e28;
  --plum: #2a1b47;
  --red: #e04750;
  --red-soft: #ff8d83;
  --cream: #f4e6cf;
  --muted: #a698b6;
  --line: rgba(244, 230, 207, 0.16);
  --line-bright: rgba(244, 230, 207, 0.34);
  --mono: 'Space Mono', 'Cascadia Mono', Consolas, monospace;
  --serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--ink); }

body {
  min-width: 320px;
  margin: 0;
  color: var(--cream);
  background:
    radial-gradient(circle at 15% 10%, rgba(99, 42, 103, 0.3), transparent 28rem),
    radial-gradient(circle at 92% 78%, rgba(82, 26, 61, 0.32), transparent 30rem),
    var(--ink);
  font-family: var(--serif);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: '';
  opacity: 0.24;
  background-image: linear-gradient(rgba(255,255,255,0.026) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }

.ost-shell {
  width: min(1180px, calc(100% - 36px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px 0 44px;
}

.ost-topbar,
.ost-brand,
.ost-nav,
.player-heading,
.player-controls,
.section-heading,
.ost-footer {
  display: flex;
  align-items: center;
}

.ost-topbar,
.player-heading,
.section-heading,
.ost-footer { justify-content: space-between; }

.ost-topbar {
  min-height: 58px;
  padding: 0 0 18px;
  border-bottom: 1px solid var(--line);
}

.ost-brand { gap: 12px; }
.ost-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--cream);
  border: 1px solid var(--red);
  background: rgba(224, 71, 80, 0.15);
  font-size: 20px;
  font-weight: 900;
  transform: rotate(-6deg);
}
.ost-brand span:last-child { display: grid; gap: 4px; }
.ost-brand small,
.ost-nav,
.eyebrow,
.player-state,
.track-number,
.track-group,
.time-row,
.ost-volume,
.ost-footer {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.ost-brand small { color: var(--red-soft); }
.ost-brand strong { font-size: 12px; letter-spacing: 0.16em; }
.ost-nav { gap: 18px; }
.ost-nav a:hover,
.ost-nav a:focus-visible { color: var(--cream); }
.ost-nav a:focus-visible,
.track-card:focus-visible,
.transport-button:focus-visible,
.play-button:focus-visible { outline: 2px solid var(--cream); outline-offset: 3px; }

.ost-hero {
  display: grid;
  grid-template-columns: 1fr 160px;
  gap: 40px;
  align-items: end;
  padding: clamp(54px, 9vw, 110px) 0 48px;
}
.eyebrow { margin: 0 0 10px; color: var(--red-soft); }
.hero-copy h1 {
  margin: 0;
  color: var(--cream);
  font-size: clamp(52px, 9vw, 108px);
  font-weight: 900;
  letter-spacing: 0.05em;
  line-height: 0.92;
  text-shadow: 5px 6px 0 rgba(224, 71, 80, 0.18);
}
.hero-copy h1 span { color: var(--red-soft); }
.hero-lead {
  max-width: 600px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}
.hero-seal {
  position: relative;
  display: grid;
  width: 138px;
  height: 138px;
  place-items: center;
  align-content: center;
  justify-self: end;
  border: 1px solid var(--red);
  background: rgba(224, 71, 80, 0.08);
  transform: rotate(7deg);
}
.hero-seal::before { position: absolute; inset: 7px; border: 1px solid rgba(255,141,131,0.4); content: ''; }
.hero-seal strong { z-index: 1; color: var(--red-soft); font-family: var(--mono); font-size: 43px; line-height: 1; }
.hero-seal span { z-index: 1; margin-top: 8px; color: var(--cream); font-family: var(--mono); font-size: 8px; letter-spacing: 0.18em; }
.hero-seal i { position: absolute; right: 13px; bottom: 8px; color: var(--cream); font-size: 14px; font-style: normal; }

.player-card {
  padding: 25px 28px 22px;
  border: 1px solid var(--line-bright);
  background:
    linear-gradient(120deg, rgba(224,71,80,0.12), transparent 38%),
    rgba(16,14,40,0.9);
  box-shadow: 0 18px 55px rgba(0,0,0,0.25), inset 0 0 0 1px rgba(244,230,207,0.025);
}
.player-heading { gap: 20px; }
.player-heading h2 { margin: 0 0 5px; font-size: clamp(22px, 3vw, 34px); font-weight: 700; }
.player-heading p:last-child { margin: 0; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: 0.08em; }
.player-state { color: var(--red-soft); }
.player-controls { gap: 9px; margin-top: 22px; }
.transport-button,
.play-button {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  color: var(--cream);
  border: 1px solid var(--line-bright);
  background: rgba(244,230,207,0.05);
}
.transport-button { width: 37px; height: 37px; font-size: 11px; }
.play-button { width: 47px; height: 47px; color: var(--ink); border-color: var(--red); background: var(--red-soft); font-size: 14px; }
.transport-button:hover { border-color: var(--red-soft); }
.play-button:hover { background: var(--cream); }
.seek-block { min-width: 90px; flex: 1; }
.seek-block input,
.ost-volume input { width: 100%; height: 3px; accent-color: var(--red-soft); cursor: pointer; }
.time-row { display: flex; justify-content: space-between; margin-top: 7px; font-size: 7px; }
.ost-volume { display: grid; min-width: 100px; grid-template-columns: auto 1fr; align-items: center; gap: 8px; }
.ost-volume span { color: var(--red-soft); }

.track-section { padding: 62px 0 0; }
.section-heading { gap: 24px; margin-bottom: 18px; }
.section-heading h2 { margin: 0; font-size: 28px; }
.section-rule { height: 1px; flex: 1; background: linear-gradient(90deg, var(--line-bright), transparent); }
.track-list { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.track-card {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto 22px;
  gap: 11px;
  align-items: center;
  min-height: 70px;
  padding: 10px 13px 10px 15px;
  overflow: hidden;
  color: var(--cream);
  border: 1px solid var(--line);
  background: rgba(16,14,40,0.7);
  text-align: left;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}
.track-card::before { position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--track-accent); content: ''; opacity: 0.7; }
.track-card::after { position: absolute; top: 0; right: 0; width: 42%; height: 1px; background: linear-gradient(90deg, transparent, var(--track-accent)); content: ''; opacity: 0.7; }
.track-card:hover,
.track-card.is-active { border-color: var(--track-accent); background: color-mix(in srgb, var(--track-accent) 12%, rgba(16,14,40,0.9)); transform: translateX(3px); }
.track-card.is-active .track-play { color: var(--track-accent); }
.track-number { color: var(--track-accent); font-size: 10px; }
.track-copy { min-width: 0; display: grid; gap: 5px; }
.track-copy strong { overflow: hidden; font-size: 14px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.track-copy small { overflow: hidden; color: var(--muted); font-family: var(--mono); font-size: 8px; letter-spacing: 0.03em; text-overflow: ellipsis; white-space: nowrap; }
.track-group { white-space: nowrap; font-size: 7px; }
.track-play { color: var(--muted); font-size: 10px; }

.ost-footer { gap: 18px; margin-top: 58px; padding-top: 17px; border-top: 1px solid var(--line); }

@media (max-width: 760px) {
  .ost-shell { width: min(100% - 24px, 560px); padding-top: 18px; }
  .ost-topbar { align-items: flex-start; gap: 18px; }
  .ost-nav { flex-direction: column; align-items: flex-end; gap: 7px; font-size: 7px; }
  .ost-hero { grid-template-columns: 1fr; gap: 28px; padding: 54px 0 35px; }
  .hero-seal { width: 95px; height: 95px; justify-self: start; }
  .hero-seal strong { font-size: 31px; }
  .hero-seal i { right: 8px; bottom: 5px; }
  .hero-lead { font-size: 12px; line-height: 1.8; }
  .player-card { padding: 20px 15px 17px; }
  .player-controls { flex-wrap: wrap; }
  .seek-block { order: 2; flex-basis: calc(100% - 10px); }
  .ost-volume { order: 3; width: 100%; }
  .track-list { grid-template-columns: 1fr; }
  .track-card { grid-template-columns: 32px minmax(0,1fr) 20px; }
  .track-group { display: none; }
  .ost-footer { align-items: flex-start; flex-direction: column; gap: 7px; font-size: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}