/* ==========================================================================
   FIREFLY / 春日手信 — intro gate
   The product page itself lives, untouched, under /firefly/.
   ========================================================================== */

.page-view--firefly-intro {
  overflow: hidden;
  background: #0b0f0d;
  color: #f2f0e9;
}

.firefly-intro {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--header-h) + clamp(28px, 5vw, 62px)) var(--gutter) clamp(54px, 8vw, 100px);
  background:
    radial-gradient(circle at 82% 18%, rgba(143, 216, 186, .12), transparent 34%),
    radial-gradient(circle at 12% 82%, rgba(203, 176, 115, .08), transparent 32%),
    #0b0f0d;
}

.firefly-intro__loading {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 22px;
  padding: 40px;
  background: #0b0f0d;
  color: #f2f0e9;
  text-align: center;
  transition: opacity .7s var(--ease), visibility .7s;
}

.firefly-intro__loading.is-done {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.firefly-intro__kicker {
  color: #8fd8ba;
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: .28em;
}

.firefly-intro__loading p {
  color: rgba(242, 240, 233, .82);
  font-family: var(--text);
  font-size: clamp(16px, 2vw, 21px);
  letter-spacing: .08em;
}

.firefly-dots {
  display: inline-flex;
  width: 1.8em;
  margin-left: .1em;
  justify-content: flex-start;
}

.firefly-dots i {
  font-style: normal;
  animation: firefly-dot 1.2s infinite ease-in-out;
}

.firefly-dots i:nth-child(2) {
  animation-delay: .15s;
}

.firefly-dots i:nth-child(3) {
  animation-delay: .3s;
}

@keyframes firefly-dot {
  0%, 60%, 100% { opacity: .2; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

.firefly-intro__track {
  width: min(220px, 52vw);
  height: 1px;
  overflow: hidden;
  background: rgba(242, 240, 233, .14);
}

.firefly-intro__track i {
  display: block;
  width: 38%;
  height: 100%;
  background: #8fd8ba;
  animation: firefly-track 1.4s infinite var(--ease-soft);
}

@keyframes firefly-track {
  from { transform: translateX(-110%); }
  to { transform: translateX(370%); }
}

.firefly-intro__content {
  display: grid;
  width: min(1280px, 100%);
  margin: 0 auto;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .72fr);
  align-items: center;
  gap: clamp(34px, 6vw, 90px);
  animation: firefly-in .9s var(--ease) both;
}

@keyframes firefly-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.firefly-intro__copy {
  max-width: 650px;
}

.firefly-intro__copy .label {
  color: #8fd8ba;
}

.firefly-intro__copy h1 {
  margin: 18px 0 24px;
  color: #f2f0e9;
  font-family: var(--serif);
  font-size: clamp(46px, 6.4vw, 104px);
  font-weight: 500;
  line-height: .9;
  letter-spacing: -.055em;
}

.firefly-intro__copy h1 em {
  color: #8fd8ba;
  font-style: normal;
  font-weight: 400;
}

.firefly-intro__lead {
  max-width: 30em;
  color: rgba(242, 240, 233, .78);
  font-family: var(--text);
  font-size: clamp(13px, 1.3vw, 16px);
  line-height: 1.9;
}

.firefly-intro__body {
  max-width: 31em;
  margin-top: 16px;
  color: rgba(242, 240, 233, .48);
  font-family: var(--text);
  font-size: 12px;
  line-height: 2;
}

.firefly-intro__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 30px 0 28px;
  color: rgba(203, 176, 115, .8);
  font-family: var(--sans);
  font-size: 8px;
  letter-spacing: .16em;
}

.firefly-intro__enter {
  display: inline-flex;
  align-items: center;
  gap: 26px;
  padding: 15px 25px;
  border: 1px solid rgba(143, 216, 186, .55);
  color: #0b0f0d;
  background: #8fd8ba;
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .12em;
  transition: background .3s, color .3s, transform .3s var(--ease);
}

.firefly-intro__enter span {
  font-size: 15px;
}

.firefly-intro__enter:hover {
  background: #f2f0e9;
  color: #0b0f0d;
  transform: translateY(-2px);
}

.firefly-intro__back {
  display: inline-block;
  margin-left: 18px;
  color: rgba(242, 240, 233, .38);
  font-family: var(--sans);
  font-size: 8px;
  letter-spacing: .1em;
  transition: color .25s;
}

.firefly-intro__back:hover {
  color: #8fd8ba;
}

.firefly-intro__note {
  max-width: 43em;
  margin-top: 38px;
  padding: 16px 18px 17px;
  border: 1px solid rgba(143, 216, 186, .16);
  background: rgba(143, 216, 186, .035);
  color: rgba(242, 240, 233, .5);
  font-family: var(--text);
  font-size: 11px;
  line-height: 1.9;
}

.firefly-intro__note strong {
  display: block;
  margin-bottom: 7px;
  color: #cbb073;
  font-family: var(--sans);
  font-size: 8px;
  font-weight: 400;
  letter-spacing: .18em;
}

.firefly-intro__note p + p {
  margin-top: 5px;
}

.firefly-intro__note b {
  color: rgba(242, 240, 233, .78);
  font-weight: 500;
}

.firefly-intro__visual {
  position: relative;
  margin: 0;
  background: #17201a;
}

.firefly-intro__visual::before {
  position: absolute;
  inset: 14px -14px -14px 14px;
  border: 1px solid rgba(143, 216, 186, .18);
  content: "";
  pointer-events: none;
}

.firefly-intro__visual img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  max-height: 70vh;
  object-fit: cover;
}

.firefly-intro__visual figcaption {
  position: relative;
  z-index: 1;
  padding-top: 13px;
  color: rgba(242, 240, 233, .34);
  font-family: var(--sans);
  font-size: 8px;
  letter-spacing: .14em;
}

@media (max-width: 900px) {
  .firefly-intro {
    padding-top: calc(var(--header-h) + 26px);
  }

  .firefly-intro__content {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }

  .firefly-intro__visual {
    order: -1;
    max-width: 520px;
  }

  .firefly-intro__visual img {
    max-height: 46vh;
  }

  .firefly-intro__copy h1 {
    font-size: clamp(44px, 9vw, 72px);
  }
}

@media (max-width: 640px) {
  .firefly-intro {
    padding-bottom: 60px;
  }

  .firefly-intro__copy h1 {
    font-size: clamp(42px, 13vw, 62px);
  }

  .firefly-intro__enter {
    width: 100%;
    justify-content: space-between;
  }

  .firefly-intro__back {
    margin: 15px 0 0;
  }

  .firefly-intro__note {
    margin-top: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .firefly-intro__content {
    animation: none;
  }

  .firefly-dots i,
  .firefly-intro__track i {
    animation: none;
  }

  .firefly-intro__track i {
    width: 100%;
  }
}