:root {
  --navy: #06275c;
  --blue: #08abc3;
  --aqua: #66c9da;
  --pale: #d9f5f8;
  --sun: #f7bd45;
  --ivory: #ffffff;
  --ink: #11324e;
  --muted: #5d7987;
  --line: rgba(8, 171, 195, 0.2);
  --shadow: 0 18px 48px rgba(8, 116, 145, 0.15);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Noto Serif JP", serif;
  background:
    radial-gradient(circle at 10% 9%, rgba(255, 255, 255, 0.95) 0 0.2rem, transparent 0.22rem),
    radial-gradient(circle at 88% 8%, rgba(255, 255, 255, 0.9) 0 0.28rem, transparent 0.3rem),
    radial-gradient(circle at 16% 72%, rgba(255, 255, 255, 0.8) 0 0.24rem, transparent 0.26rem),
    linear-gradient(135deg, rgba(8, 171, 195, 0.12) 0 32%, rgba(166, 216, 228, 0.28) 32% 68%, rgba(8, 171, 195, 0.14) 68% 100%),
    #f6fcfd;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  padding: 16px clamp(18px, 4vw, 52px);
  background: #fff;
  border-bottom: 1px solid rgba(8, 171, 195, 0.16);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.brand img {
  width: clamp(118px, 16vw, 168px);
  height: auto;
}

.header-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 18px;
  color: #fff;
  font-family: "Tai Heritage Pro", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  background: var(--blue);
  border-radius: 999px;
  box-shadow: 0 12px 26px rgba(8, 171, 195, 0.22);
}

.hero {
  padding-top: 75px;
  overflow: hidden;
  background: #fff;
}

.hero picture,
.hero img {
  display: block;
  width: 100%;
}

.hero img {
  height: auto;
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--blue);
  font-family: "Tai Heritage Pro", sans-serif;
  font-size: clamp(0.82rem, 1vw, 0.95rem);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before {
  display: inline-block;
  width: 42px;
  height: 1px;
  content: "";
  background: currentColor;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 24px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  border-radius: 999px;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 15px 28px rgba(8, 171, 195, 0.26);
}

.button--secondary {
  color: var(--navy);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
}

.lead-band {
  position: relative;
  z-index: 2;
  padding: 24px clamp(18px, 5vw, 64px);
  color: #fff;
  background: var(--blue);
}

.lead-band__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 4vw, 52px);
  max-width: 1180px;
  margin: 0 auto;
  text-align: center;
}

.lead-band strong {
  font-family: "Tai Heritage Pro", sans-serif;
  font-size: clamp(1.2rem, 2vw, 2rem);
  letter-spacing: 0.1em;
}

.lead-band span {
  color: rgba(255, 255, 255, 0.78);
}

main {
  overflow: hidden;
}

.section {
  padding: clamp(64px, 9vw, 116px) clamp(18px, 5vw, 64px);
}

.section--intro {
  background:
    linear-gradient(90deg, rgba(8, 171, 195, 0.025) 25%, transparent 25%) 0 0 / 22px 22px,
    linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0));
}

.section__inner {
  max-width: 1180px;
  margin: 0 auto;
}

.section-heading {
  display: grid;
  gap: 12px;
  max-width: 80%;
  margin: 0 auto clamp(34px, 5vw, 58px);
  text-align: center;
}

.section-heading h2 {
  margin-bottom: 0;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.22;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.intro-item {
  min-height: 154px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(8, 171, 195, 0.16);
  border-radius: 8px;
  box-shadow: 0 14px 34px rgba(8, 116, 145, 0.1);
}

.intro-item b {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-family: "Tai Heritage Pro", sans-serif;
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.intro-item p {
  margin-bottom: 0;
  line-height: 1.85;
}

.products {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
}

.product {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.78fr);
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
  padding: clamp(18px, 3vw, 28px);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(8, 171, 195, 0.18);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.product:nth-child(even) {
  grid-template-columns: minmax(300px, 0.78fr) minmax(0, 1.05fr);
}

.product:nth-child(even) .product__gallery {
  order: 2;
}

.product__gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.product__gallery figure {
  min-height: 132px;
  margin: 0;
  overflow: hidden;
  background: #effbfc;
  border-radius: 6px;
}

.product__gallery figure:first-child {
  grid-column: span 2;
  grid-row: span 2;
}

.product__gallery img {
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.product:hover .product__gallery img {
  transform: scale(1.035);
}

.product__info {
  padding: clamp(8px, 2vw, 20px);
}

.product__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 12px;
  color: var(--blue);
  font-family: "Tai Heritage Pro", sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: rgba(8, 171, 195, 0.12);
  border-radius: 999px;
}

.tag--sale {
  color: var(--navy);
  background: var(--sun);
}

.product h3 {
  margin-bottom: 16px;
  color: var(--navy);
  font-family: "Tai Heritage Pro", "Noto Serif JP", sans-serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
  letter-spacing: 0.04em;
  line-height: 1;
}

.price {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 22px;
}

.price del {
  color: #7a98a5;
  font-family: "Tai Heritage Pro", sans-serif;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
}

.price strong {
  color: var(--sun);
  font-family: "Tai Heritage Pro", sans-serif;
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  line-height: 1;
}

.product__text {
  margin-bottom: 26px;
  color: #486575;
  line-height: 1.9;
}

.section--closing {
  color: #fff;
  background:
    linear-gradient(rgba(8, 171, 195, 0.82), rgba(6, 39, 92, 0.72)),
    url("../images/p-1103-2.webp") center / cover no-repeat;
}

.closing {
  display: grid;
  gap: 22px;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.closing h2 {
  margin-bottom: 0;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1.18;
}

.closing p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.9;
}

.site-footer {
  padding: 34px 18px;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  background: var(--navy);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.8s ease,
    transform 0.8s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 920px) {
  .product,
  .product:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .product:nth-child(even) .product__gallery {
    order: 0;
  }

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

@media (max-width: 640px) {
  .site-header {
    padding: 12px 16px;
  }

  .header-link {
    min-height: 38px;
    padding: 9px 13px;
    font-size: 0.72rem;
  }

  .hero {
    padding-top: 63px;
  }

  .lead-band__inner {
    display: grid;
    gap: 8px;
  }

  .section-heading h2 {
    font-size: 1.45rem;
    line-height: 1.35;
  }

  .product {
    padding: 14px;
  }

  .product h3 {
    margin-bottom: 12px;
    font-size: 1.7rem;
  }

  .product__gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .product__gallery figure,
  .product__gallery figure:first-child {
    grid-column: auto;
    grid-row: auto;
    min-height: 142px;
  }

  .button {
    width: 100%;
  }

  .closing h2 {
    font-size: 1.35rem;
    line-height: 1.4;
  }
}