/* ========== Fade-in Animation ========== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: "Hiragino Mincho ProN", "Noto Serif JP", "Times New Roman", serif;
  color: #333;
  background: #fff;
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: #333;
  text-decoration: none;
}

a:hover {
  opacity: 0.6;
}

/* ========== Header ========== */
.header {
  border-bottom: 1px solid #e0e0e0;
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 100;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.4rem;
  letter-spacing: 0.15em;
  font-weight: 400;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav a.active {
  border-bottom: 1px solid #333;
  padding-bottom: 2px;
}

/* ========== Hero (Top page) ========== */
.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 40px;
}

.hero-copy {
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-sub {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: #888;
}

/* ========== Page common ========== */
.page {
  flex: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 40px 80px;
  width: 100%;
}

.breadcrumb {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  margin-bottom: 60px;
  color: #888;
}

.breadcrumb a {
  color: #888;
}

.breadcrumb a:hover {
  color: #333;
}

/* ========== Page Title (Left-aligned) ========== */
.page-title-left {
  margin-bottom: 64px;
}

.page-title-left h1 {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 2.4rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}

.title-line-accent {
  width: 48px;
  height: 2px;
  background: #999;
  margin-bottom: 12px;
}

.title-sub {
  font-size: 0.8rem;
  color: #888;
  letter-spacing: 0.1em;
}

/* ========== Company Info Table ========== */
.company-info {
  max-width: 680px;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table tr {
  border-bottom: 1px solid #e0e0e0;
}

.info-table th,
.info-table td {
  padding: 24px 0;
  font-size: 0.9rem;
  font-weight: 400;
  vertical-align: top;
  text-align: left;
}

.info-table th {
  width: 160px;
  letter-spacing: 0.08em;
  color: #333;
}

.info-table td {
  color: #555;
}

.info-table td a {
  color: #555;
  text-decoration: underline;
}

.info-table td a:hover {
  color: #333;
}

/* ========== Coming Soon ========== */
.coming-soon {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 40px;
}

.coming-soon h1 {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}

.coming-soon p {
  font-size: 0.9rem;
  color: #888;
  margin-top: 8px;
}

/* ========== Hero Banner ========== */
.hero-banner {
  width: 100%;
  padding: 40px 0;
  text-align: center;
  background: #fff;
}

.hero-banner-img {
  width: 80%;
  max-width: 900px;
  display: inline-block;
}

/* ========== Products Section ========== */
.products {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 40px;
}

.section-header {
  margin-bottom: 48px;
}

.section-header h2 {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 32px;
}

.product-card {
  display: block;
  text-decoration: none;
  color: #333;
  transition: opacity 0.3s;
}

.product-card:hover {
  opacity: 0.7;
}

.product-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  margin-bottom: 16px;
}

.product-img-placeholder {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #eaeaea;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #aaa;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.product-info {
  text-align: center;
}

.product-brand {
  font-size: 0.7rem;
  color: #999;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.product-name {
  font-size: 0.95rem;
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.product-price {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  color: #888;
}

/* ========== Item Detail Page ========== */
.item-page {
  max-width: 1000px;
}

.item-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 80px;
}

.item-gallery {}

.item-img-placeholder {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #eaeaea;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #aaa;
  font-size: 0.9rem;
}

.gallery-main {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  margin-bottom: 12px;
}

.gallery-img {
  display: none;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-img.active {
  display: flex;
  justify-content: center;
  align-items: center;
}

img.gallery-img {
  display: none;
}

img.gallery-img.active {
  display: block;
}

.gallery-thumbs {
  display: flex;
  gap: 8px;
}

.thumb {
  width: 56px;
  height: 56px;
  object-fit: cover;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.2s;
}

.thumb.active {
  border-color: #333;
}

.thumb:hover {
  border-color: #999;
}

.item-detail {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.item-brand {
  font-size: 0.75rem;
  color: #999;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.item-name {
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.item-price {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.4rem;
  margin-bottom: 24px;
}

.item-price .tax {
  font-size: 0.8rem;
  color: #888;
}

.item-desc {
  font-size: 0.9rem;
  color: #555;
  line-height: 2;
}

.item-about {
  padding: 60px 0;
  border-top: 1px solid #e0e0e0;
}

.item-about h2 {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 1.4rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.item-name-sub {
  font-size: 0.9rem;
  color: #888;
  letter-spacing: 0.05em;
}

.item-caption {
  font-size: 0.8rem;
  color: #999;
  margin-bottom: 12px;
}

.item-about-content {
  margin-top: 32px;
  font-size: 0.9rem;
  color: #555;
  line-height: 2;
}

.item-features {
  margin-top: 20px;
  padding-left: 1.2em;
  list-style: disc;
}

.item-features li {
  margin-bottom: 8px;
}

.item-steps {
  display: flex;
  gap: 40px;
}

.step {
  text-align: center;
  flex: 1;
}

.step-num {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: #999;
  margin-bottom: 8px;
}

.step-text {
  font-size: 0.95rem;
  color: #333;
}

.item-note {
  margin-top: 24px;
  font-size: 0.8rem;
  color: #999;
}

.faq-list dt {
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 8px;
  color: #333;
}

.faq-list dd {
  font-size: 0.85rem;
  color: #666;
  line-height: 1.8;
  margin-left: 0;
  padding-bottom: 20px;
  border-bottom: 1px solid #eee;
}

/* ========== Footer ========== */
.footer {
  border-top: 1px solid #e0e0e0;
  padding: 24px 40px;
  text-align: center;
}

.footer-link {
  display: inline-block;
  font-size: 0.75rem;
  color: #888;
  letter-spacing: 0.08em;
  margin: 0 12px 12px;
}

.footer-link:hover {
  color: #333;
}

.footer p {
  font-size: 0.7rem;
  color: #aaa;
  letter-spacing: 0.08em;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .header-inner {
    padding: 16px 20px;
    flex-direction: column;
    gap: 16px;
  }

  .nav {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-copy {
    font-size: 1.5rem;
  }

  .page {
    padding: 24px 20px 60px;
  }

  .info-table th {
    width: 120px;
  }

  .info-table th,
  .info-table td {
    padding: 18px 0;
    font-size: 0.85rem;
  }


  .products {
    padding: 48px 20px;
  }

  .item-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .item-steps {
    flex-direction: column;
    gap: 20px;
  }
}