/* ===== リセット・ベース ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  color: #222;
  line-height: 1.7;
  background: #fff;
}

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

/* ===== ヘッダー・ナビ ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #eee;
  z-index: 100;
}

.nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #111;
}

.logo-accent {
  color: #2563eb;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 36px;
}

.nav-links a {
  font-size: 0.88rem;
  color: #555;
  letter-spacing: 0.03em;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #2563eb;
}

/* ===== ヒーロー ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f0f4ff 0%, #fafafa 60%, #e8f0fe 100%);
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  max-width: 760px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: #2563eb;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 28px;
  color: #111;
}

.hero-accent {
  color: #2563eb;
}

.hero-sub {
  font-size: 1.05rem;
  color: #666;
  line-height: 1.9;
  margin-bottom: 44px;
}

.btn {
  display: inline-block;
  padding: 15px 44px;
  background: #2563eb;
  color: #fff;
  border-radius: 6px;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}

.btn:hover {
  background: #1d4ed8;
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.4);
}

.hero-deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-deco span {
  position: absolute;
  font-weight: 900;
  color: rgba(37, 99, 235, 0.05);
  line-height: 1;
}

.hero-deco span:nth-child(1) { top: 10%; left: 5%; font-size: 12rem; }
.hero-deco span:nth-child(2) { top: 50%; right: 6%; font-size: 9rem; }
.hero-deco span:nth-child(3) { bottom: 12%; left: 40%; font-size: 7rem; }

/* ===== セクション共通 ===== */
.section {
  padding: 96px 24px;
}

.section-dark {
  background: #111;
  color: #f5f5f5;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: #2563eb;
  text-align: center;
  margin-bottom: 10px;
}

.section-label--light {
  color: #60a5fa;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 64px;
  color: #111;
  letter-spacing: -0.01em;
}

.section-title--light {
  color: #f5f5f5;
}

/* ===== 私たちについて ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text p {
  font-size: 1rem;
  color: #444;
  line-height: 2;
  margin-bottom: 20px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-card {
  background: #f0f4ff;
  border-radius: 12px;
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  border-left: 4px solid #2563eb;
}

.about-card-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: #2563eb;
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
}

.about-card p {
  font-size: 0.95rem;
  font-weight: 600;
  color: #222;
  line-height: 1.6;
}

/* ===== 事業内容 ===== */
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.service-card {
  background: #1e1e1e;
  border: 1px solid #2a2a2a;
  border-radius: 16px;
  padding: 48px 40px;
  transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
  border-color: #2563eb;
  transform: translateY(-4px);
}

.service-num {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #2563eb;
  margin-bottom: 16px;
}

.service-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #f5f5f5;
  margin-bottom: 20px;
  line-height: 1.4;
}

.service-desc {
  font-size: 0.9rem;
  color: #999;
  line-height: 1.9;
  margin-bottom: 28px;
}

.service-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-list li {
  font-size: 0.85rem;
  color: #ccc;
  padding-left: 16px;
  position: relative;
}

.service-list li::before {
  content: '+';
  position: absolute;
  left: 0;
  color: #2563eb;
  font-weight: 700;
}

/* ===== 会社概要 ===== */
.company-table {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  border-collapse: collapse;
}

.company-table tr {
  border-bottom: 1px solid #eee;
}

.company-table th,
.company-table td {
  padding: 20px 16px;
  font-size: 0.95rem;
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 160px;
  color: #888;
  font-weight: 600;
  white-space: nowrap;
}

.company-table td {
  color: #222;
}

/* ===== フッター ===== */
.footer {
  background: #0a0a0a;
  color: #555;
  text-align: center;
  padding: 40px 24px;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.footer-copy {
  font-size: 0.8rem;
}

/* ===== レスポンシブ ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-sub br {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .service-card {
    padding: 36px 28px;
  }

  .company-table th {
    width: 120px;
  }
}