@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;700&display=swap');

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: #1d1d1f;
  background: #fff;
  line-height: 1.8;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #f0f0f0;
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #1d1d1f;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #C8A84B;
}

/* Mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 24px;
  height: 24px;
  position: relative;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: #1d1d1f;
  position: absolute;
  left: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle span:nth-child(1) { top: 7px; }
.menu-toggle span:nth-child(2) { top: 12px; }
.menu-toggle span:nth-child(3) { top: 17px; }

.menu-toggle.active span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 80vh;
  padding: 80px 24px;
}

.hero h1 {
  font-size: clamp(32px, 7vw, 64px);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.3;
}

.hero p {
  margin-top: 20px;
  font-size: 15px;
  color: #6e6e73;
}

/* ===== Section ===== */
.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 80px 24px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: 0.04em;
}

/* ===== Product Cards ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.product-card {
  text-align: center;
  transition: transform 0.3s;
}

.product-card:hover {
  transform: translateY(-4px);
}

.product-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 16px;
  background: #f5f5f7;
}

.product-card h3 {
  margin-top: 20px;
  font-size: 17px;
  font-weight: 700;
}

.product-card p {
  margin-top: 8px;
  font-size: 13px;
  color: #6e6e73;
  line-height: 1.7;
}

.btn {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 32px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
  border: 1px solid #C8A84B;
  color: #C8A84B;
  border-radius: 24px;
  transition: background 0.3s, color 0.3s;
}

.btn:hover {
  background: #C8A84B;
  color: #fff;
}

/* ===== Contact Form ===== */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
}

.contact-form label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: 'Noto Sans JP', sans-serif;
  border: 1px solid #d2d2d7;
  border-radius: 10px;
  outline: none;
  transition: border-color 0.2s;
  margin-bottom: 24px;
  background: #fafafa;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #C8A84B;
}

.contact-form textarea {
  min-height: 160px;
  resize: vertical;
}

.contact-form button {
  display: block;
  width: 100%;
  padding: 14px;
  font-size: 15px;
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 400;
  letter-spacing: 0.06em;
  background: #C8A84B;
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: opacity 0.3s;
}

.contact-form button:hover {
  opacity: 0.85;
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 48px 24px;
  font-size: 12px;
  color: #86868b;
  border-top: 1px solid #f0f0f0;
}

/* ===== Page Header (sub pages) ===== */
.page-header {
  text-align: center;
  padding: 80px 24px 40px;
}

.page-header h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    border-bottom: 1px solid #f0f0f0;
  }

  .nav-links.open {
    max-height: 200px;
    padding: 16px 0;
  }

  .nav-links li {
    padding: 12px 0;
  }

  .hero {
    min-height: 60vh;
  }

  .product-grid {
    gap: 32px;
  }
}