:root {
  --navy: #0f1f3d;
  --navy-soft: #1b2f54;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --ink: #1a2233;
  --muted: #5b6678;
  --line: #e4e8ef;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --radius: 14px;
  --maxw: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--navy);
}

.brand:hover {
  text-decoration: none;
}

.nav a {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 500;
  margin-left: 28px;
}

/* Hero */
.hero {
  background: radial-gradient(
      1200px 600px at 70% -10%,
      rgba(37, 99, 235, 0.18),
      transparent 60%
    ),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-soft) 100%);
  color: #fff;
  padding: 104px 0 120px;
}

.hero-eyebrow {
  margin: 0 0 18px;
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  color: #9db6ff;
  font-weight: 500;
}

.hero-title {
  margin: 0 0 24px;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero-lead {
  margin: 0 0 36px;
  font-size: 1.05rem;
  color: #d6def0;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.05rem;
}

/* Sections */
.section {
  padding: 88px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-eyebrow {
  margin: 0 0 6px;
  text-align: center;
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  color: var(--blue);
  font-weight: 700;
  text-transform: uppercase;
}

.section-title {
  margin: 0 0 48px;
  text-align: center;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  color: var(--navy);
  font-weight: 700;
}

.section-lead {
  margin: -28px 0 48px;
  text-align: center;
  color: var(--muted);
  font-size: 0.98rem;
}

/* Products */
.products {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.product {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.product:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 31, 61, 0.1);
}

.product-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.product-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid var(--line);
}

.product-name {
  margin: 0;
  font-size: 1.15rem;
  color: var(--navy);
  line-height: 1.4;
}

.product-sub {
  margin: 2px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.product-desc {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.product-tags li {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 500;
}

.product-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  font-size: 0.86rem;
  font-weight: 700;
  transition: transform 0.15s ease, background 0.15s ease;
}

.store-btn:hover {
  background: var(--navy-soft);
  text-decoration: none;
  transform: translateY(-2px);
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 31, 61, 0.1);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(140deg, #eef3ff, #dbe6ff);
  font-size: 1.3rem;
  margin-bottom: 18px;
}

.card h3 {
  margin: 0 0 12px;
  font-size: 1.15rem;
  color: var(--navy);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Profile table */
.profile {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.profile th,
.profile td {
  text-align: left;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.profile tr:last-child th,
.profile tr:last-child td {
  border-bottom: none;
}

.profile th {
  width: 30%;
  background: var(--bg-alt);
  color: var(--navy);
  font-weight: 700;
  white-space: nowrap;
}

/* Contact */
.contact-inner {
  text-align: center;
}

.contact-lead {
  margin: 0 0 32px;
  color: var(--muted);
}

/* Footer */
.site-footer {
  background: var(--navy);
  color: #cdd6ea;
  padding: 36px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
}

.footer-meta {
  color: #cdd6ea;
  font-size: 0.82rem;
}

.footer-copy {
  color: #8e9bbd;
  font-size: 0.82rem;
}

/* Responsive */
.pc-only {
  display: inline;
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }
  .hero {
    padding: 72px 0 84px;
  }
  .section {
    padding: 64px 0;
  }
  .cards,
  .products {
    grid-template-columns: 1fr;
  }
  .pc-only {
    display: none;
  }
  .profile th {
    width: 36%;
  }
}