* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'M PLUS Rounded 1c', 'Noto Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top left, rgba(1, 156, 207, 0.15), transparent 55%),
              radial-gradient(circle at bottom right, rgba(234, 119, 0, 0.15), transparent 50%),
              var(--bg-page);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: inherit;
}

a:hover {
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(245, 244, 243, 0.85);
  border-bottom: 1px solid rgba(17, 24, 39, 0.08);
}

.site-header .inner {
  width: min(1120px, 92vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  gap: 1rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--c-home);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
}

.nav-links a {
  position: relative;
  padding-bottom: 0.2rem;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.1rem;
  width: 100%;
  height: 2px;
  background: var(--c-home);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--c-home);
}

.nav-links a:hover::after,
.nav-links a:focus::after {
  transform: scaleX(1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.9rem 1.6rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--c-home), #42c6eb);
  color: #fff;
  box-shadow: 0 12px 24px rgba(1, 156, 207, 0.28);
}

.btn--primary:hover,
.btn--primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(1, 156, 207, 0.34);
}

.btn--outline {
  background: rgba(255, 255, 255, 0.7);
  color: var(--c-home);
  border: 2px solid rgba(1, 156, 207, 0.4);
}

.btn--outline:hover,
.btn--outline:focus {
  transform: translateY(-2px);
  border-color: var(--c-home);
}

main {
  width: min(1120px, 92vw);
  margin: 0 auto;
  padding: 4rem 0 5rem;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 1rem;
  font-weight: 800;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.hero {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem;
  align-items: center;
  padding: 4rem 0 3rem;
}

.hero-copy h1 {
  font-size: clamp(2.1rem, 5vw, 3rem);
  line-height: 1.2;
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero-copy p {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-visual {
  position: relative;
}

.hero-visual::before {
  content: '';
  position: absolute;
  inset: -8%;
  background: linear-gradient(140deg, rgba(1, 156, 207, 0.18), rgba(234, 119, 0, 0.18));
  filter: blur(40px);
  border-radius: 50%;
  z-index: 0;
}

.hero-visual img {
  position: relative;
  width: 100%;
  max-width: 380px;
  display: block;
  margin: 0 auto;
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(1, 156, 207, 0.25);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  color: var(--c-home);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.8rem;
}

.feature-card {
  background: #fff;
  border-radius: 1.5rem;
  padding: 2rem;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(17, 24, 39, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  color: #fff;
  font-weight: 700;
}

.feature-card:nth-child(1) .icon { background: var(--c-home); }
.feature-card:nth-child(2) .icon { background: var(--c-task); }
.feature-card:nth-child(3) .icon { background: var(--c-ok); }

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.about {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
  align-items: center;
  padding: 4rem 0;
}

.about .card {
  background: #fff;
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow: 0 18px 50px rgba(1, 156, 207, 0.08);
  border: 1px solid rgba(1, 156, 207, 0.18);
}

.about ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.about li {
  display: flex;
  gap: 0.85rem;
  align-items: center;
}

.about li span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(234, 119, 0, 0.12);
  color: var(--c-task);
  font-weight: 700;
}

.faq-preview {
  background: #fff;
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(17, 24, 39, 0.06);
}

.faq-preview details {
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  background: rgba(1, 156, 207, 0.06);
  border: 1px solid rgba(1, 156, 207, 0.12);
  margin-bottom: 1rem;
  transition: transform 0.2s ease;
}

.faq-preview details[open] {
  background: rgba(1, 156, 207, 0.12);
  transform: translateY(-2px);
}

.faq-preview summary {
  list-style: none;
  font-weight: 700;
  cursor: pointer;
}

.faq-preview summary::-webkit-details-marker {
  display: none;
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.link-card {
  background: #fff;
  border-radius: 20px;
  padding: 1.8rem;
  border: 1px solid rgba(17, 24, 39, 0.06);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.07);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.link-card strong {
  font-size: 1.1rem;
  font-weight: 700;
}

.link-card a {
  color: var(--c-home);
  font-weight: 700;
  text-decoration: none;
}

.link-card a:hover {
  text-decoration: underline;
}

.operator-card {
  background: #fff;
  border-radius: 20px;
  padding: 2rem;
  border: 1px dashed rgba(17, 24, 39, 0.12);
  text-align: center;
  color: var(--muted);
  box-shadow: 0 18px 40px rgba(1, 156, 207, 0.08);
}

.operator-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.operator-card .placeholder {
  margin-top: 1rem;
  padding: 1.2rem;
  border-radius: 16px;
  border: 1px dashed rgba(1, 156, 207, 0.4);
  background: rgba(1, 156, 207, 0.06);
  font-size: 0.95rem;
}

.bottom-cta {
  margin-top: 5rem;
  background: linear-gradient(135deg, rgba(1, 156, 207, 0.95), rgba(234, 119, 0, 0.95));
  color: #fff;
  border-radius: 32px;
  padding: 3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
  align-items: center;
  box-shadow: 0 30px 60px rgba(1, 156, 207, 0.35);
}

.bottom-cta h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 1rem;
}

.bottom-cta p {
  font-size: 1.05rem;
  opacity: 0.92;
}

.bottom-cta .btn--outline {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.site-footer {
  padding: 3rem 0 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer .inner {
  width: min(1120px, 92vw);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-footer a {
  text-decoration: none;
  color: inherit;
}

.site-footer a:hover {
  color: var(--c-home);
}

@media (max-width: 1024px) {
  .hero,
  .about,
  .bottom-cta {
    grid-template-columns: 1fr;
  }

  .hero {
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual img {
    max-width: 320px;
  }

  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header .inner {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  main {
    padding: 3rem 0 4rem;
  }

  .hero {
    gap: 2rem;
    padding-top: 3rem;
  }

  .faq-preview {
    padding: 1.75rem;
  }
}

@media (max-width: 520px) {
  .nav-links {
    font-size: 0.85rem;
  }

  .hero-copy p {
    font-size: 1rem;
  }

  .badge {
    font-size: 0.75rem;
  }

  .feature-card {
    padding: 1.6rem;
  }
}