/* 基本設定 */
body { margin: 0; padding: 0; font-family: 'Noto Sans JP', sans-serif; color: #333; line-height: 1.8; background: #f8f8f8; }

/* ヘッダー共通 */
.header-inner { max-width: 1100px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; padding: 0 40px; height: 64px; }
nav ul { list-style: none; display: flex; margin: 0; padding: 0; }
nav ul li { margin-left: 28px; }
nav ul li a { text-decoration: none; font-size: 14px; font-weight: 700; }

/* 下層ページヘッダー */
.header-sub { background: #fff; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 10; }
.logo { font-size: 20px; font-weight: 700; color: #001f3f; text-decoration: none; letter-spacing: 0.06em; }
.header-sub nav ul li a { color: #555; }
.header-sub nav ul li a:hover { color: #001f3f; }
.header-sub nav ul li a.active { color: #001f3f; border-bottom: 2px solid #001f3f; padding-bottom: 2px; }
.nav-sub-contact { color: #001f3f !important; border: 1.5px solid #001f3f; padding: 5px 16px !important; border-radius: 20px; }
.nav-sub-contact:hover { background: #001f3f !important; color: #fff !important; }

/* トップページヘッダー */
.header-top { background: transparent; border-bottom: none; padding: 0; position: absolute; top: 0; left: 0; width: 100%; z-index: 10; box-sizing: border-box; }
.logo-white { color: #fff !important; text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: 0.06em; }
.nav-white { color: rgba(255,255,255,0.9) !important; }
.nav-white:hover { color: #fff !important; }
.nav-contact { color: #fff !important; border: 1.5px solid rgba(255,255,255,0.8); padding: 5px 16px; border-radius: 20px; }
.nav-contact:hover { background: rgba(255,255,255,0.15) !important; }

/* トップページヒーロー */
.top-hero {
  background: linear-gradient(135deg, #001f3f 0%, #003366 60%, #004080 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 2rem;
  box-sizing: border-box;
}
.top-hero-inner { max-width: 800px; }
.top-hero-sub { font-size: 13px; letter-spacing: 0.2em; color: rgba(255,255,255,0.6); margin-bottom: 1.5rem; }
.top-hero h1 { font-size: 72px; font-weight: 700; color: #fff; margin: 0 0 1.5rem; letter-spacing: 0.05em; line-height: 1.2; }
.top-hero-desc { font-size: 18px; color: rgba(255,255,255,0.8); letter-spacing: 0.05em; margin: 0; }

/* 事業紹介セクション */
.top-services { padding: 5rem 2rem; }
.top-services-inner { max-width: 900px; margin: 0 auto; }
.section-label { font-size: 12px; color: #888; letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 0.5rem; }
.top-services h2 { font-size: 28px; font-weight: 700; color: #001f3f; margin: 0 0 3rem; }
.top-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.top-card { background: #fff; border: 0.5px solid #eee; border-radius: 12px; padding: 2rem 1.5rem; }
.top-card i { font-size: 32px; color: #001f3f; display: block; margin-bottom: 1rem; }
.top-card h3 { font-size: 16px; font-weight: 700; color: #001f3f; margin: 0 0 0.75rem; }
.top-card p { font-size: 14px; color: #666; line-height: 1.8; margin: 0; }

/* ページヒーロー（下層ページ共通） */
.page-hero { background: linear-gradient(135deg, #001f3f 0%, #003366 60%, #004080 100%); padding: 4rem 2rem; }
.page-hero-inner { max-width: 1020px; margin: 0 auto; padding: 0 20px; }
.hero-label { font-size: 12px; color: rgba(255,255,255,0.6); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 0.5rem; }
.page-hero h1 { font-size: 32px; font-weight: 700; color: #fff; margin: 0; }

/* メイン */
main { max-width: 1020px; margin: 3rem auto; padding: 0 40px 4rem; }

/* aboutページ */
.about-lead { font-size: 16px; line-height: 2; color: #444; margin-bottom: 3rem; padding-bottom: 3rem; border-bottom: 0.5px solid #eee; }
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.about-card { padding: 2rem 1.5rem; border: 0.5px solid #eee; border-radius: 12px; background: #fff; }
.about-card i { font-size: 32px; color: #001f3f; display: block; margin-bottom: 1rem; }
.about-card h3 { font-size: 16px; font-weight: 700; color: #001f3f; margin: 0 0 0.75rem; }
.about-card p { font-size: 14px; color: #666; line-height: 1.8; margin: 0; }

/* contactページ */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; max-width: 600px; }
.contact-card { background: #fff; border: 0.5px solid #eee; border-radius: 12px; padding: 2.5rem 2rem; text-align: center; }
.contact-card i { font-size: 36px; color: #001f3f; display: block; margin-bottom: 1rem; }
.contact-label { font-size: 12px; color: #888; letter-spacing: 0.1em; text-transform: uppercase; margin: 0 0 0.5rem; }
.contact-card a { font-size: 15px; font-weight: 700; color: #001f3f; text-decoration: none; }
.contact-card a:hover { text-decoration: underline; }

/* フッター */
footer { background: #001f3f; color: #fff; text-align: center; padding: 30px 0; margin-top: 60px; }

/* 会社概要ページ */
.card { background: #fff; border: 0.5px solid #eee; border-radius: 12px; overflow: hidden; }
.card-header { padding: 1.25rem 1.5rem; border-bottom: 0.5px solid #eee; display: flex; align-items: center; gap: 10px; }
.card-header i { font-size: 18px; color: #888; }
.card-header span { font-size: 13px; font-weight: 500; color: #888; letter-spacing: 0.05em; text-transform: uppercase; }
.profile-row { display: grid; grid-template-columns: 200px 1fr; border-bottom: 0.5px solid #eee; }
.profile-row:last-child { border-bottom: none; }
.profile-label { padding: 1.25rem 1.5rem; font-size: 14px; color: #666; background: #fafafa; display: flex; align-items: center; gap: 8px; }
.profile-value { padding: 1.25rem 1.5rem; font-size: 15px; display: flex; align-items: center; }
.tags { flex-wrap: wrap; gap: 4px; }
.tag { display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 6px; background: #f5f5f5; color: #555; border: 0.5px solid #eee; margin: 2px 3px 2px 0; }

/* 会社概要ページ リンクカード */
.company-links { margin-top: 3rem; }
.company-links-label { font-size: 13px; color: #888; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; }
.company-links-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.company-link-card { display: flex; align-items: center; gap: 12px; background: #fff; border: 0.5px solid #eee; border-radius: 12px; padding: 1.25rem 1.5rem; text-decoration: none; color: #001f3f; font-size: 14px; font-weight: 700; transition: background 0.2s; }
.company-link-card:hover { background: #f0f4f8; }
.company-link-card i { font-size: 22px; color: #001f3f; }
.company-link-card span { flex: 1; }
.company-link-arrow { font-size: 16px; color: #aaa; }