:root {
  --bg: #0d0b12;
  --bg-soft: #151221;
  --ink: #f4e9d8;
  --muted: #a89bb8;
  --accent: #ec3750;
  --accent-2: #ff8c37;
  --mint: #7bd88f;
  --line: rgba(244, 233, 216, 0.14);
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(236, 55, 80, 0.14), transparent 60%),
    radial-gradient(900px 500px at -10% 40%, rgba(123, 216, 143, 0.07), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- marquee ---------- */

.marquee {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: 3px solid #000;
}

.marquee-inner {
  display: inline-flex;
  animation: scroll 22s linear infinite;
}

.marquee span {
  padding: 0.5rem 0;
}

@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- hero ---------- */

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
  min-height: 100vh;
}

.kicker {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.75rem;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(5rem, 16vw, 9rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  font-weight: 900;
}

h1 .dot { color: var(--accent); }

.tagline {
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  margin-top: 0.5rem;
}

.tagline em {
  color: var(--mint);
  font-style: normal;
  text-decoration: underline;
  text-decoration-style: wavy;
  text-decoration-color: var(--accent);
  text-underline-offset: 6px;
}

.sub {
  color: var(--muted);
  max-width: 34rem;
  margin-top: 1.2rem;
}

.sub strong { color: var(--ink); }

.cta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  border: 3px solid #000;
  box-shadow: 4px 4px 0 #000;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 #000;
}

.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
  box-shadow: none;
}

.btn.ghost:hover {
  box-shadow: none;
  transform: none;
  border-color: var(--accent);
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
}

.hint code, p code {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--accent-2);
}

/* ---------- cd visual ---------- */

.hero-right { display: flex; justify-content: center; }

.jewel-case {
  width: min(340px, 80vw);
  aspect-ratio: 1;
  border-radius: 14px;
  background: linear-gradient(145deg, #2a2440, #171326);
  padding: 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 30px 60px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  position: relative;
}

.jewel-case::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.08) 45%, transparent 60%);
  pointer-events: none;
}

.cd {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  position: relative;
  animation: spin 6s linear infinite;
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.25);
}

.cd-hole,
.cd-hole span,
.cd-shine {
  display: none;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---------- sections ---------- */

section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  position: relative;
}

h2::after {
  content: "";
  display: block;
  width: 70px;
  height: 5px;
  background: var(--accent);
  border-radius: 99px;
  margin-top: 0.6rem;
  box-shadow: 3px 3px 0 #000;
}

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.8rem;
}

.card h3 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 1rem;
  color: var(--accent-2);
}

.card.accent h3 { color: var(--mint); }

.card ul {
  list-style: none;
}

.card li {
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--line);
  color: var(--muted);
}

.card li:last-child { border-bottom: none; }

.card a {
  color: var(--mint);
}

/* ---------- tech ---------- */

.tech .sub {
  color: var(--muted);
  max-width: 40rem;
  margin-bottom: 1.5rem;
}

.tech .sub em {
  color: var(--mint);
  font-style: normal;
}

.tech pre {
  background: #0a0810;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.5rem;
  overflow-x: auto;
  box-shadow: inset 0 0 60px rgba(236, 55, 80, 0.06);
  max-width: 38rem;
}

.tech pre code {
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.8;
  color: #e8dbb5;
}

.tech pre .c { color: #6d6280; }

.tech .hint {
  margin-top: 1rem;
  max-width: 38rem;
}

.tech .hint a { color: var(--mint); }

/* ---------- tracklist ---------- */

.tracks {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  max-width: none;
}

.tracks > * {
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

.tracklist {
  list-style: none;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg);
}

.tracklist li {
  display: grid;
  grid-template-columns: 3.5rem 1fr 1.6fr;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px dashed var(--line);
  transition: background 0.15s ease;
}

.tracklist li:last-child { border-bottom: none; }

.tracklist li:hover { background: rgba(236, 55, 80, 0.07); }

.num {
  color: var(--accent);
  font-weight: 800;
}

.title {
  font-weight: 700;
  font-size: 1.05rem;
}

.desc {
  color: var(--muted);
  font-size: 0.9rem;
  justify-self: end;
  text-align: right;
}

/* ---------- faq ---------- */

.faq details {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 0.8rem;
  background: var(--bg-soft);
  overflow: hidden;
}

.faq summary {
  cursor: pointer;
  padding: 1.1rem 1.5rem;
  font-weight: 700;
  list-style: none;
  position: relative;
  padding-right: 3rem;
}

.faq summary::after {
  content: "+";
  position: absolute;
  right: 1.4rem;
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 800;
  transition: transform 0.2s ease;
}

.faq details[open] summary::after {
  content: "–";
  transform: rotate(90deg);
}

.faq details p {
  padding: 0 1.5rem 1.3rem;
  color: var(--muted);
}

/* ---------- outro ---------- */

.outro {
  text-align: center;
  padding: 5rem 1.5rem;
}

.disc-mini {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  background: repeating-radial-gradient(circle at center,
    transparent 0 3px,
    rgba(255, 255, 255, 0.06) 3px 4px,
    transparent 4px 6px),
    linear-gradient(135deg, #b8c4d8, #d5deeb);
  animation: spin 6s linear infinite;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.outro p {
  color: var(--muted);
  margin-bottom: 2rem;
}

/* ---------- footer ---------- */

footer {
  text-align: center;
  padding: 2.5rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

footer .heart { color: var(--accent); }

footer .small { margin-top: 0.3rem; opacity: 0.7; }

/* ---------- responsive ---------- */

@media (max-width: 800px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 3rem;
    min-height: auto;
  }

  .hero-right { order: -1; }

  .jewel-case { width: min(240px, 60vw); }

  .columns { grid-template-columns: 1fr; }

  .tracklist li {
    grid-template-columns: 2.5rem 1fr;
  }

  .desc {
    justify-self: start;
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cd, .disc-mini, .marquee-inner { animation: none; }
}