/* ── Reset & Variables ────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --navy: #1a2332;
  --navy-light: #243447;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e5e7eb;
  --radius: 12px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Kaku Gothic ProN', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Header ──────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.8rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--navy);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo:hover { text-decoration: none; }

.logo span {
  color: var(--accent);
}

nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

nav a {
  color: var(--text-light);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}
nav a:hover { color: var(--accent); text-decoration: none; }

/* ハンバーガーメニュー（モバイル） */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
}

/* ── Hero ────────────────────────────── */
.hero {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(59, 130, 246, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(26, 35, 50, 0.04) 0%, transparent 60%),
    var(--bg);
}

.hero-label {
  display: inline-block;
  padding: 0.35rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.hero h1 span {
  color: var(--accent);
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-light);
  max-width: 500px;
  margin: 0.5rem auto 2rem;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}
.hero-cta:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
  text-decoration: none;
  color: #fff;
}

/* ── Section Common ──────────────────── */
section {
  padding: 5rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-alt {
  background: var(--bg-alt);
  max-width: 100%;
  padding: 5rem 1.5rem;
}

.section-alt > .section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.section-sub {
  color: var(--text-light);
  margin-bottom: 3rem;
  font-size: 1rem;
}

/* ── About ───────────────────────────── */
.about-text {
  max-width: 720px;
  font-size: 1.05rem;
  line-height: 2;
  color: var(--text);
}

.about-text p + p {
  margin-top: 1.2rem;
}

/* ── Products ────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.product-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.1);
}

.product-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.product-card h3 {
  font-size: 1.2rem;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.product-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.product-badges {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--text-light);
}

.product-coming {
  background: var(--bg-alt);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.95rem;
  min-height: 200px;
}

/* ── Company Info ────────────────────── */
.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table th,
.company-table td {
  text-align: left;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.company-table th {
  color: var(--navy);
  font-weight: 600;
  width: 35%;
  white-space: nowrap;
}

.company-table td {
  color: var(--text);
}

/* ── Contact ─────────────────────────── */
.contact-box {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-box p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  background: var(--navy);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s;
}
.contact-email:hover {
  background: var(--navy-light);
  text-decoration: none;
  color: #fff;
}

/* ── Footer ──────────────────────────── */
footer {
  text-align: center;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-light);
  font-size: 0.85rem;
}

footer a {
  color: var(--text-light);
}
footer a:hover {
  color: var(--accent);
}

/* ── Legal Pages ─────────────────────── */
.legal-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
}

.legal-page .back-link {
  display: inline-block;
  margin-bottom: 2rem;
  color: var(--accent);
  font-size: 0.9rem;
}

.legal-page h1 {
  font-size: 1.8rem;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.legal-page .updated {
  color: var(--text-light);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.legal-page h2 {
  color: var(--navy);
  font-size: 1.15rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.legal-page p,
.legal-page ul {
  color: var(--text);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.legal-page ul {
  padding-left: 1.5rem;
}

.legal-page li {
  margin-bottom: 0.3rem;
}

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

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.8rem;
    border-bottom: 1px solid var(--border);
  }

  nav.open {
    display: flex;
  }

  .hero {
    min-height: 60vh;
    padding: 5rem 1.5rem 3rem;
  }

  section {
    padding: 3rem 1.5rem;
  }

  .section-alt {
    padding: 3rem 1.5rem;
  }

  .company-table th {
    width: 40%;
    font-size: 0.85rem;
  }

  .company-table td {
    font-size: 0.85rem;
  }

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