body.page-estudio-home {
  --surface-0: #05080f;
  --particle-a: #22d3ee;
  --particle-b: #ff5a36;
  background:
    radial-gradient(900px 420px at 50% -8%, rgba(34, 211, 238, 0.18), transparent 58%),
    radial-gradient(640px 360px at 100% 8%, rgba(255, 90, 54, 0.14), transparent 52%),
    #05080f;
}

body.page-estudio-home .announce,
body.page-estudio-home header.top,
body.page-estudio-home footer.foot,
body.page-estudio-home .noise {
  display: none !important;
}

body.page-estudio-home .stage {
  width: 100%;
  max-width: none;
  margin: 0;
  gap: 0;
  padding: 0 0 2rem;
}

body.page-estudio-home .flash {
  width: min(1120px, calc(100% - 48px));
  margin: 16px auto 0;
}

.eh {
  position: relative;
  z-index: 1;
}

.eh a { color: inherit; }
.eh button, .eh textarea { font: inherit; color: inherit; }
.eh button { cursor: pointer; }
.eh svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.eh-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.eh-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 22px;
  height: 72px;
  padding: 0 28px;
  background: rgba(8, 14, 24, 0.82);
  border-bottom: 1px solid rgba(238, 246, 255, 0.1);
  backdrop-filter: blur(14px);
}

.eh-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.eh-brand em {
  font-style: normal;
  color: var(--cyan);
}

.eh-links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 0.92rem;
}

.eh-links a {
  text-decoration: none;
  transition: color 0.16s ease;
}

.eh-links a:hover { color: var(--ink); }

.eh-go {
  display: inline-flex;
  align-items: center;
  flex: none;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: linear-gradient(105deg, #b6f6ff 0%, #22d3ee 46%, #ff8a5b 100%);
  color: #04202c;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.45);
  animation: eh-pulse 2.4s ease-in-out infinite;
  transition: transform 0.16s ease, filter 0.16s ease;
}

.eh-go:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
}

.eh-hero {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 28px;
  text-align: center;
}

.eh-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 6px 14px;
  border: 1px solid rgba(34, 211, 238, 0.4);
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.08);
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eh-eyebrow i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: eh-blink 1.6s ease-in-out infinite;
}

.eh-hero h1 {
  margin: 0 auto;
  max-width: 16ch;
  font-family: var(--display);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 560;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.eh-hero h1 em {
  font-style: italic;
  background: linear-gradient(110deg, #fff 10%, #22d3ee 48%, #ff7a45 90%);
  background-size: 160% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: eh-sheen 7s ease-in-out infinite;
}

.eh-lead {
  max-width: 36rem;
  margin: 1rem auto 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.5;
}

.eh-bench {
  display: grid;
  gap: 12px;
  margin: 32px auto 0;
  padding: 16px;
  text-align: left;
  border: 1px solid rgba(34, 211, 238, 0.28);
  border-radius: 24px;
  background:
    linear-gradient(165deg, rgba(34, 211, 238, 0.14), transparent 42%),
    linear-gradient(180deg, #17263c 0%, #10192b 70%);
  box-shadow:
    0 28px 60px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(34, 211, 238, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  animation: eh-rise 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.eh-bench-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eh-eq {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 22px;
}

.eh-eq i {
  display: block;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, #22d3ee, #ff5a36);
  transform-origin: center bottom;
  animation: eh-eq 1.05s ease-in-out infinite;
}

.eh-eq i:nth-child(1) { height: 8px; }
.eh-eq i:nth-child(2) { height: 14px; animation-delay: 0.12s; }
.eh-eq i:nth-child(3) { height: 18px; animation-delay: 0.22s; }
.eh-eq i:nth-child(4) { height: 11px; animation-delay: 0.06s; }
.eh-eq i:nth-child(5) { height: 16px; animation-delay: 0.28s; }
.eh-eq i:nth-child(6) { height: 9px; animation-delay: 0.16s; }
.eh-eq i:nth-child(7) { height: 13px; animation-delay: 0.34s; }

.eh-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.eh-modes button {
  border: 1px solid rgba(238, 246, 255, 0.12);
  border-radius: 999px;
  background: rgba(5, 8, 15, 0.35);
  padding: 7px 12px;
  color: #d5e4f2;
  font-size: 0.82rem;
  font-weight: 650;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.eh-modes button:hover { transform: translateY(-1px); }

.eh-modes button.is-on {
  border-color: rgba(34, 211, 238, 0.55);
  background: rgba(34, 211, 238, 0.16);
  color: #eef6ff;
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.16);
}

.eh-bench textarea {
  width: 100%;
  min-height: 96px;
  resize: vertical;
  border: 1px solid rgba(34, 211, 238, 0.16);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(5, 8, 15, 0.4);
  outline: none;
  line-height: 1.45;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.eh-bench textarea:focus {
  border-color: rgba(34, 211, 238, 0.55);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
}

.eh-bench-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.eh-offer {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.eh-offer a {
  color: var(--cyan);
  text-decoration: none;
}

.eh-dice {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 0.16s ease, transform 0.16s ease;
}

.eh-dice:hover { color: var(--cyan); transform: translateY(-1px); }
.eh-dice:active svg { transform: rotate(18deg); }
.eh-dice svg { transition: transform 0.25s ease; }

.eh-create {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(238, 246, 255, 0.14);
  min-height: 44px;
  padding: 0 16px 0 7px;
  border-radius: 999px;
  background: linear-gradient(180deg, #2a384e, #161f30);
  color: #f7fbff;
  font-weight: 650;
  box-shadow:
    0 12px 24px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.eh-create svg {
  width: 26px;
  height: 26px;
  padding: 5px;
  border-radius: 50%;
  background: #22d3ee;
  color: #04202c;
  box-shadow: 0 4px 10px rgba(34, 211, 238, 0.35);
  flex: none;
}

.eh-create:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.4);
  background: linear-gradient(180deg, #314258, #1a2638);
  color: #fff;
  box-shadow:
    0 16px 28px rgba(0, 0, 0, 0.42),
    0 0 18px rgba(34, 211, 238, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.eh-songs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.eh-song {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 8px;
  border: 1px solid rgba(238, 246, 255, 0.1);
  border-radius: 16px;
  background: rgba(16, 25, 43, 0.72);
  text-align: left;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.eh-song:hover,
.eh-song.is-on {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.45);
  background: rgba(34, 211, 238, 0.08);
}

.eh-song span {
  display: grid;
  min-width: 0;
}

.eh-song strong,
.eh-song small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.eh-song strong { font-size: 0.92rem; }
.eh-song small { color: var(--muted); font-size: 0.75rem; }

.eh-cover {
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 30%, #fff 0, transparent 28%),
    linear-gradient(140deg, var(--a), var(--b));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16);
}

.eh-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  width: min(1120px, calc(100% - 40px));
  margin: 48px auto 0;
  overflow: hidden;
  border: 1px solid rgba(238, 246, 255, 0.12);
  border-radius: 18px;
  background: rgba(238, 246, 255, 0.12);
}

.eh-stats div {
  padding: 26px 16px;
  background: #10192b;
  text-align: center;
}

.eh-stats strong {
  display: block;
  color: var(--cyan);
  font-family: var(--display);
  font-size: 1.7rem;
  font-weight: 560;
}

.eh-stats span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.86rem;
}

.eh-section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 8px;
}

.eh-section-head {
  max-width: 38rem;
  margin: 0 auto 32px;
  text-align: center;
}

.eh-kicker {
  margin: 0 0 10px;
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eh-section-head h2,
.eh-faq h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 560;
  letter-spacing: -0.03em;
}

.eh-section-head p {
  margin: 0.55rem 0 0;
  color: var(--muted);
}

.eh-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.eh-feature {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px 18px 20px;
  border: 1px solid rgba(238, 246, 255, 0.1);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(23, 38, 60, 0.9), #10192b);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.eh-feature:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 122, 69, 0.45);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.35), 0 0 24px rgba(34, 211, 238, 0.08);
}

.eh-feature:hover .eh-icon {
  color: #04202c;
  background: linear-gradient(140deg, #22d3ee, #ff7a45);
  transform: rotate(-6deg) scale(1.05);
}

.eh-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 6px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.08);
  color: var(--cyan);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.eh-feature strong {
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.eh-feature p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.eh-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.eh-pills a {
  padding: 8px 14px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  border-radius: 999px;
  background: rgba(16, 25, 43, 0.85);
  text-decoration: none;
  font-weight: 650;
  transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease, color 0.16s ease;
}

.eh-pills a:hover {
  border-color: rgba(255, 122, 69, 0.6);
  background: rgba(255, 90, 54, 0.12);
  color: #fff;
  transform: translateY(-2px);
}

.eh-faq {
  max-width: 720px;
}

.eh-faq details {
  border-top: 1px solid rgba(238, 246, 255, 0.12);
  padding: 14px 0;
}

.eh-faq details:last-of-type { border-bottom: 1px solid rgba(238, 246, 255, 0.12); }

.eh-faq summary {
  cursor: pointer;
  font-weight: 650;
  font-size: 1.05rem;
}

.eh-faq summary::marker { color: var(--cyan); }

.eh-faq p {
  margin: 8px 0 4px;
  color: var(--muted);
  line-height: 1.5;
}

.eh-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  width: min(1120px, calc(100% - 40px));
  margin: 48px auto 0;
  padding: 22px 0 8px;
  border-top: 1px solid rgba(238, 246, 255, 0.1);
  color: var(--muted);
  font-size: 0.9rem;
}

.eh-foot a { text-decoration: none; }
.eh-foot a:hover { color: var(--ink); }

.eh-rise {
  opacity: 0;
  transform: translateY(16px);
  animation: eh-rise 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

@keyframes eh-eq {
  0%, 100% { transform: scaleY(0.45); }
  50% { transform: scaleY(1.35); }
}

@keyframes eh-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

@keyframes eh-sheen {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes eh-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.35); }
  50% { box-shadow: 0 0 0 8px rgba(34, 211, 238, 0); }
}

@keyframes eh-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

@media (max-width: 860px) {
  .eh-bar {
    flex-wrap: wrap;
    height: auto;
    gap: 8px;
    padding: 10px 16px 8px;
  }
  .eh-links {
    order: 3;
    width: 100%;
    gap: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .eh-links a {
    flex: none;
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(34, 211, 238, 0.08);
  }
  .eh-go { min-height: 44px; margin-left: auto; }
  .eh-songs,
  .eh-stats { grid-template-columns: 1fr 1fr; }
  .eh-features { grid-template-columns: 1fr; }
  .eh-modes { display: grid; grid-template-columns: 1fr 1fr; }
  .eh-modes button { min-height: 44px; }
  .eh-bench textarea { font-size: 16px; }
  .eh-bench-foot { flex-direction: column; align-items: stretch; }
  .eh-dice { min-height: 44px; justify-content: center; }
  .eh-create { width: 100%; min-height: 48px; margin-left: 0; }
  .eh-pills a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  .eh-faq summary {
    min-height: 48px;
    display: flex;
    align-items: center;
  }
  .eh-song { min-height: 56px; }
}

@media (max-width: 560px) {
  .eh-songs { grid-template-columns: 1fr; }
  .eh-hero { padding-top: 28px; }
  .eh-hero h1 { font-size: 2.05rem; max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  .eh-eq i,
  .eh-go,
  .eh-eyebrow i,
  .eh-hero h1 em,
  .eh-bench,
  .eh-rise { animation: none; }
  .eh-feature,
  .eh-song,
  .eh-pills a,
  .eh-icon,
  .eh-create,
  .eh-dice,
  .eh-modes button { transition: none; }
}