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

body {
  font-family: ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #ffffff;
  color: #111827;
}

/* ── layout wrapper ── */

.hsVol4-wrapper {
  min-height: 100vh;
  background-color: #ffffff;
  display: flex;
  flex-direction: column;
}

/* ── header ── */

.hsVol4-header {
  background-color: #000000;
  padding: 0.75rem 1.5rem;
}

.hsVol4-header-logo {
  height: 2.5rem;
  object-fit: contain;
  display: block;
}

/* ── banner ── */

.hsVol4-banner {
  width: 100%;
}

.hsVol4-banner-image {
  width: 100%;
  height: auto;
  display: block;
}

/* ── goods section ── */

.hsVol4-goods {
  padding: 4rem 0;
  background-color: #ffffff;
}

.hsVol4-goods-heading {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-bottom: 3rem;
  background: linear-gradient(135deg, #0B81B1 0%, #0a6d97 100%);
}

.hsVol4-goods-heading-image {
  width: 100%;
  max-width: 20rem;
  object-fit: contain;
  display: block;
}

.hsVol4-goods-inner {
  padding: 0 1rem;
}

.hsVol4-goods-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  max-width: 56rem;
  margin: 0 auto;
}

/* ── product card ── */

.hsVol4-product-card {
  position: relative;
  aspect-ratio: 1 / 1;
  background-color: #f3f4f6;
  overflow: hidden;
  cursor: pointer;
  display: block;
  text-decoration: none;
  border-radius: 2px;
}

.hsVol4-product-bg {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: #e5e7eb;
  background-size: cover;
  background-position: center;
  transition: all 0.3s ease;
}

.hsVol4-product-border {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  border: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.hsVol4-product-card:hover .hsVol4-product-border {
  border-color: #9ca3af;
}

.hsVol4-product-overlay {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.hsVol4-product-card:hover .hsVol4-product-overlay {
  opacity: 1;
}

.hsVol4-product-info {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  opacity: 0;
  transition: opacity 0.3s ease;
  padding: 0.75rem;
}

.hsVol4-product-card:hover .hsVol4-product-info {
  opacity: 1;
}

.hsVol4-product-name {
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  line-height: 1.4;
}

.hsVol4-product-price {
  color: #e5e7eb;
  font-size: 0.75rem;
  font-weight: 500;
}

/* ── information section ── */

.hsVol4-info {
  padding: 5rem 1rem;
  background-color: #f9fafb;
  border-top: 1px solid #e5e7eb;
  flex: 1;
}

.hsVol4-info-inner {
  max-width: 42rem;
  margin: 0 auto;
}

/* ── INFORMATION heading ── */

.hsVol4-info-heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 3rem;
}

.hsVol4-info-heading-title {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.3em;
  color: #111827;
  font-family: 'Helvetica Neue', Arial, sans-serif;
}

.hsVol4-info-divider {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.hsVol4-info-divider-line {
  height: 2px;
  background-color: #0B81B1;
}

.hsVol4-info-divider-line--short {
  width: 2.5rem;
}

.hsVol4-info-divider-line--long {
  width: 5rem;
}

.hsVol4-info-divider-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: #0B81B1;
  flex-shrink: 0;
}

/* ── sales title ── */

.hsVol4-sales-title {
  text-align: center;
  color: #111827;
  font-weight: 700;
  letter-spacing: 0.1em;
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
}

/* ── info blocks ── */

.hsVol4-info-block {
  margin-bottom: 2rem;
}

.hsVol4-info-block-label {
  color: #dc2626;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

.hsVol4-info-block-text {
  color: #1f2937;
  font-size: 0.875rem;
  line-height: 1.75;
}

/* ── notices list ── */

.hsVol4-notices {
  list-style: none;
  padding: 0;
}

.hsVol4-notice-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.hsVol4-notice-item--pt {
  padding-top: 0.25rem;
}

.hsVol4-notice-bullet {
  flex-shrink: 0;
  margin-top: 7px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: #ef4444;
}

.hsVol4-notice-text {
  color: #1f2937;
  font-size: 0.875rem;
  line-height: 1.75;
}

/* ── event link block ── */

.hsVol4-event-block {
  border-top: 1px solid #e5e7eb;
  padding-top: 2rem;
  margin-top: 0.5rem;
}

.hsVol4-event-lead {
  color: #1f2937;
  font-size: 0.875rem;
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.hsVol4-event-link {
  color: #dc2626;
  font-size: 0.875rem;
  text-decoration: underline;
  text-underline-offset: 2px;
  line-height: 1.75;
  transition: color 0.3s ease;
}

.hsVol4-event-link:hover {
  color: #991b1b;
}

/* ── footer ── */

.hsVol4-footer {
  background-color: #111827;
  padding: 1.5rem;
  text-align: center;
}

.hsVol4-footer-text {
  color: #6b7280;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

/* ── responsive: 768px ── */

@media (min-width: 768px) {
  .hsVol4-header {
    padding: 0.75rem 2rem;
  }

  .hsVol4-goods-heading-image {
    max-width: 32rem;
  }

  .hsVol4-goods-inner {
    padding: 0 2rem;
  }

  .hsVol4-goods-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }

  .hsVol4-product-name {
    font-size: 0.875rem;
  }

  .hsVol4-info {
    padding: 5rem 2rem;
  }

  .hsVol4-info-heading-title {
    font-size: 1.875rem;
  }

  .hsVol4-sales-title {
    font-size: 1.5rem;
  }

}