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

:root {
  --ink: #1f2733;
  --sub: #5c6b7d;
  --line: #e3e9f0;
  --accent: #4a7fd4;
  --bg: #ffffff;
  --bg-soft: #f5f8fb;
}

html { scroll-behavior: smooth; }

body {
  font-family: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
}

.hero {
  background:
    radial-gradient(ellipse 900px 420px at 15% -10%, rgba(255, 190, 205, 0.35), transparent 60%),
    radial-gradient(ellipse 900px 460px at 85% 0%, rgba(150, 200, 255, 0.4), transparent 60%),
    radial-gradient(ellipse 700px 380px at 55% 110%, rgba(190, 240, 220, 0.35), transparent 60%),
    linear-gradient(180deg, #fdfeff, #f2f6fb);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
  padding: 22px 24px;
}
.brand {
  font-family: "Montserrat", sans-serif;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.nav nav a {
  color: var(--sub);
  text-decoration: none;
  font-size: 0.88rem;
  margin-left: 22px;
}
.nav nav a:hover { color: var(--accent); }

.hero-body {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding: 72px 24px 88px;
}
.hero-body h1 {
  font-family: "Montserrat", sans-serif;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  background: linear-gradient(100deg, #5b8def 0%, #8f7fe8 32%, #d97fb8 62%, #e0995f 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  width: fit-content;
}

/* 彩雲の装飾 */
.clouds { position: absolute; inset: 0; pointer-events: none; }
.cloud { position: absolute; opacity: 0.75; }
.cloud.c1 {
  width: 240px;
  right: 4%;
  top: 8px;
  animation: drift 14s ease-in-out infinite alternate;
}
.cloud.c2 {
  width: 150px;
  right: 26%;
  top: 110px;
  opacity: 0.5;
  animation: drift 18s ease-in-out infinite alternate-reverse;
}
.cloud.c3 {
  width: 110px;
  right: 12%;
  top: 190px;
  opacity: 0.4;
  animation: drift 22s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translateX(0); }
  to { transform: translateX(28px); }
}
@media (prefers-reduced-motion: reduce) {
  .cloud { animation: none; }
}
@media (max-width: 600px) {
  .cloud.c1 { width: 160px; right: 2%; top: -6px; }
  .cloud.c2 { width: 100px; right: 40%; top: 4px; }
  .cloud.c3 { display: none; }
}
.lead {
  margin-top: 28px;
  font-size: 1.08rem;
  font-weight: 500;
}

main { max-width: 960px; margin: 0 auto; padding: 0 24px; }

.section { padding: 64px 0 8px; }
.section h2 {
  font-family: "Montserrat", sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 20px;
}
.section h2::after {
  content: "";
  display: block;
  width: 52px;
  height: 4px;
  border-radius: 2px;
  margin-top: 6px;
  background: linear-gradient(90deg, #ffb8c9, #ffdca6, #b5e6cb, #aac9ff);
}

.product-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px 26px;
  background: var(--bg-soft);
  max-width: 620px;
}
.product-head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.product-head h3 { font-size: 1.2rem; }
.badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border-radius: 999px;
  padding: 2px 10px;
}
.product-card p { font-size: 0.95rem; color: var(--sub); }
.product-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}
.product-link:hover { text-decoration: underline; }
.products-note { color: var(--sub); font-size: 0.85rem; margin-top: 14px; }

.about-table { max-width: 620px; }
.about-table > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.about-table dt { color: var(--sub); font-weight: 500; }

#contact p { font-size: 0.95rem; max-width: 620px; }
.contact-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 8px 22px;
}
.contact-link:hover { background: var(--accent); color: #fff; }

.footer {
  text-align: center;
  color: var(--sub);
  font-size: 0.8rem;
  padding: 72px 24px 32px;
}

@media (max-width: 600px) {
  .hero-body { padding: 48px 24px 60px; }
  .about-table > div { grid-template-columns: 96px 1fr; }
}