* {
  box-sizing: border-box;
}

:root {
  --red: #e60012;
  --dark: #222;
  --text: #333;
  --muted: #777;
  --bg: #f7f7f7;
  --white: #fff;
  --border: #eee;
  --shadow: 0 10px 30px rgba(0,0,0,0.08);
  --radius: 18px;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  cursor: pointer;
  transition: 0.25s ease;
}

button:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

/* HEADER */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 18px 48px;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 26px;
  font-weight: 900;
  color: var(--red);
  letter-spacing: 1px;
}

.logo span {
  display: block;
  font-size: 11px;
  color: #999;
  font-weight: 500;
  letter-spacing: 0;
}

.search {
  display: flex;
  background: #f2f2f2;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid transparent;
}

.search:focus-within {
  border-color: var(--red);
  background: #fff;
}

.search input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 13px 18px;
  outline: none;
}

.search button {
  border: none;
  background: var(--red);
  color: white;
  padding: 0 18px;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.nav a:hover,
.menu a:hover,
.section-title a:hover {
  color: var(--red);
}

/* MENU */
.menu {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 13px 48px;
  background: white;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.menu button {
  background: var(--red);
  color: white;
  border: none;
  padding: 11px 18px;
  border-radius: 999px;
  font-weight: bold;
}

/* HERO */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin: 36px auto;
  padding: 60px;
  max-width: 1180px;
  min-height: 460px;
  background: linear-gradient(135deg, #fff 0%, #fff1f3 100%);
  border-radius: 32px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-text p {
  color: var(--red);
  font-weight: 700;
  margin-bottom: 12px;
}

.hero-text h1 {
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.08;
  margin: 0 0 18px;
  letter-spacing: -1.5px;
}

.hero-text span {
  display: block;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-text button,
.store-banner button {
  background: var(--red);
  color: white;
  border: none;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(230,0,18,0.25);
}

.hero-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: var(--shadow);
}

/* CATEGORIES */
.categories {
  max-width: 1180px;
  margin: 0 auto 36px;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 14px;
}

.categories div {
  background: white;
  border-radius: var(--radius);
  padding: 18px 10px;
  text-align: center;
  box-shadow: 0 6px 18px rgba(0,0,0,0.05);
  transition: 0.25s ease;
}

.categories div:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.icon {
  display: block;
  font-size: 26px;
  margin-bottom: 8px;
}

/* SECTION */
.section,
.features {
  max-width: 1180px;
  margin: 0 auto;
  padding: 34px 20px;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 18px;
}

.section-title h2,
.features h2 {
  font-size: 30px;
  margin: 0;
  letter-spacing: -0.5px;
}

.section-title a {
  color: var(--muted);
  font-size: 14px;
}

/* PRODUCT GRID */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.card {
  position: relative;
  background: white;
  border-radius: 22px;
  padding: 14px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
  transition: 0.28s ease;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.image {
  background: #f1f1f1;
  border-radius: 18px;
  overflow: hidden;
}

.image img {
  display: block;
  width: 100%;
  height: 190px;
  object-fit: cover;
  transition: 0.35s ease;
}

.card:hover .image img {
  transform: scale(1.06);
}

.card h3 {
  font-size: 16px;
  margin: 14px 4px 6px;
  line-height: 1.4;
}

.price {
  margin: 0 4px;
  color: var(--red);
  font-size: 18px;
  font-weight: 900;
}

.rating {
  margin: 6px 4px 2px;
  color: var(--muted);
  font-size: 12px;
}

.heart {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.heart:hover {
  background: var(--red);
  color: white;
}

.badge {
  position: absolute;
  z-index: 2;
  top: 22px;
  left: 22px;
  background: var(--red);
  color: white;
  font-size: 11px;
  font-weight: 800;
  padding: 6px 10px;
  border-radius: 999px;
}

/* STORE BANNER */
.store-banner {
  max-width: 1180px;
  margin: 40px auto;
  padding: 42px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 30px;
  align-items: center;
  background: linear-gradient(135deg, #ffe5ea, #ffffff);
  border-radius: 30px;
  box-shadow: var(--shadow);
}

.store-banner h2 {
  font-size: 32px;
  margin: 0 0 10px;
}

.store-banner p {
  color: var(--muted);
}

.store-image img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 24px;
}

/* FEATURES */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 20px;
}

.feature-card {
  background: white;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
  transition: 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.feature-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.feature-card h3 {
  margin: 18px 18px 8px;
}

.feature-card p {
  margin: 0 18px 22px;
  color: var(--muted);
  line-height: 1.6;
}

/* FOOTER */
.footer {
  margin-top: 50px;
  background: #222;
  color: white;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 46px 60px;
}

.footer h4 {
  margin: 0 0 14px;
}

.footer a {
  display: block;
  color: #bbb;
  margin-bottom: 9px;
  font-size: 14px;
}

.footer a:hover {
  color: white;
}

.copyright {
  background: #111;
  color: #aaa;
  text-align: center;
  padding: 14px;
  font-size: 12px;
}

/* TABLET */
@media (max-width: 900px) {
  .header {
    grid-template-columns: 1fr;
    padding: 16px 20px;
  }

  .nav {
    justify-content: space-between;
  }

  .menu {
    overflow-x: auto;
    white-space: nowrap;
    padding: 12px 20px;
  }

  .hero {
    grid-template-columns: 1fr;
    margin: 20px;
    padding: 36px;
  }

  .categories {
    grid-template-columns: repeat(4, 1fr);
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .store-banner {
    grid-template-columns: 1fr;
    margin: 20px;
  }

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

  .footer {
    grid-template-columns: repeat(2, 1fr);
    padding: 36px 24px;
  }
}

/* SMARTPHONE */
@media (max-width: 540px) {
  .header {
    position: static;
  }

  .logo {
    font-size: 24px;
  }

  .search input {
    width: 100%;
  }

  .menu {
    gap: 18px;
  }

  .hero {
    margin: 14px;
    padding: 28px 22px;
    border-radius: 24px;
  }

  .hero-text h1 {
    font-size: 34px;
  }

  .hero-image img {
    height: 240px;
  }

  .categories {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .image img {
    height: 240px;
  }

  .section-title h2,
  .features h2,
  .store-banner h2 {
    font-size: 24px;
  }

  .store-banner {
    padding: 28px 22px;
    border-radius: 24px;
  }

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


.demo-note {
  margin-top: 20px;
  font-size: 12px;
  color: #aaa;
  text-align: center;
  line-height: 1.6;
}


.store-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #f5eaea;
  padding: 40px;
  border-radius: 20px;
}

/* 左テキスト */
.store-text {
  max-width: 50%;
}

/* 右画像 */
.store-image {
  max-width: 45%;
}

.store-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
}


@media (max-width: 768px) {
  .store-section {
    flex-direction: column;
    text-align: center;
  }

  .store-text,
  .store-image {
    max-width: 100%;
  }

  .store-image img {
    margin-top: 20px;
  }
}