/* モバイルメニュー修正＋既存スタイルの要点 */
:root{--brand-blue:#012451;--accent-blue:#1e3766;--light-blue:#bfc8d3;--text:#0d1b2a;--muted:#5c6b85;--bg:#ffffff}
html{box-sizing:border-box;scroll-behavior:smooth}*,*::before,*::after{box-sizing:inherit}
body{margin:0;color:var(--text);background:var(--bg) url('assets/bg-pattern.svg');font-family:'Noto Sans JP',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,'Noto Sans',sans-serif;line-height:1.7}
.section{scroll-margin-top:80px}.container{max-width:1080px;margin:0 auto;padding:0 1rem}

/* ヘッダー＆ナビ */
header.site-header{position:sticky;top:0;z-index:1000;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 1rem;background:rgba(255,255,255,.88);backdrop-filter:saturate(160%) blur(6px);border-bottom:1px solid rgba(0,0,0,.06)}
header.site-header .brand{display:flex;align-items:center;gap:.6rem;text-decoration:none}
.brand-text{font-family:'Noto Serif JP',serif;font-size:1.8rem;font-weight:700;color:var(--brand-blue);letter-spacing:.05em}
header.site-header nav.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:1rem}
header.site-header nav.site-nav a,header.site-header nav.site-nav a:visited{color:var(--text);text-decoration:none}
header.site-header nav.site-nav a:hover{background:var(--light-blue);border-radius:8px}
header.site-header nav.site-nav a.active{color:var(--brand-blue);border-bottom:2px solid var(--brand-blue)}
header.site-header .nav-toggle{display:none;background:#fff;border:1px solid rgba(0,0,0,.15);border-radius:8px;font-size:1.1rem;padding:.25rem .5rem}

@media (max-width:760px){
  header.site-header .nav-toggle{display:block}
  header.site-header nav.site-nav ul{display:none;position:absolute;right:1rem;top:56px;background:#fff;border:1px solid rgba(0,0,0,.06);border-radius:12px;padding:.6rem;box-shadow:0 10px 30px rgba(10,42,102,.08);z-index:1001}
  header.site-header nav.site-nav.open ul{display:grid;gap:.4rem}
  header.site-header nav.site-nav ul li{list-style:none}
  header.site-header nav.site-nav a,header.site-header nav.site-nav a:visited{color:var(--text)}
}

/* ヒーロー */
.hero{position:relative;min-height:56vh;display:grid;place-items:center;padding:4rem 1rem;overflow:hidden;background-image:radial-gradient(circle at 20% 10%,rgba(31,77,160,.10),transparent 30%),radial-gradient(circle at 80% 90%,rgba(31,77,160,.12),transparent 30%)}
.hero::before{content:'';position:absolute;inset:-60vh -30vw;background:conic-gradient(from 180deg at 50% 50%,rgba(10,42,102,.08),transparent);filter:blur(60px)}
.hero-inner{text-align:center}.catch{margin:0;font-size:clamp(1.8rem,3.6vw,3rem);font-weight:700;color:var(--text);font-family:'Noto Serif JP',serif}
.catch .accent{color:var(--brand-blue)}.sub{margin:1rem auto 2rem;max-width:800px;color:var(--muted)}
.hero-cta{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.hero-cta .btn{position:relative;z-index:2}
.btn{display:inline-block;border-radius:12px;padding:.7rem 1.2rem;text-decoration:none;font-weight:600;letter-spacing:.02em}
.btn-primary{background:var(--brand-blue);color:#fff;box-shadow:0 6px 20px rgba(10,42,102,.25)}.btn-primary:hover{background:var(--accent-blue)}
.btn-outline{border:2px solid var(--brand-blue);color:var(--brand-blue)}.btn-outline:hover{background:var(--light-blue)}

/* ニュース装飾 */
.news{background:linear-gradient(180deg,rgba(10,42,102,.06),transparent);padding:2.5rem 0}
.news h2{margin-top:0;font-family:'Noto Serif JP',serif;color:var(--brand-blue);text-align:center}
.news-list{list-style:none;margin:1rem auto;padding:0;display:grid;gap:.8rem;max-width:1080px}
.news-list li{display:grid;grid-template-columns:120px 1fr;align-items:start;gap:1rem;background:#fff;border:1px solid rgba(0,0,0,.06);border-left:4px solid var(--brand-blue);border-radius:12px;padding:.8rem 1rem;box-shadow:0 6px 18px rgba(10,42,102,.06)}
.news-list time{font-weight:700;color:var(--brand-blue)}.news-note{color:var(--muted);font-size:.95rem;text-align:center}
@media (max-width:900px){.news-list li{grid-template-columns:100px 1fr}}
@media (max-width:640px){.news-list li{grid-template-columns:1fr}}

/* パターン背景＋パネル装飾 */
.pattern-bg{background:url('assets/bg-pattern.svg') repeat;background-size:40px 40px;padding:24px 0}
.panel{position:relative;background:#fff;border-radius:16px;padding:1.2rem;box-shadow:0 10px 30px rgba(10,42,102,.06);max-width:1080px;margin:0 auto}
.panel.accent-left{border-left:6px solid var(--brand-blue)}
.panel h2{margin-top:0;font-family:'Noto Serif JP',serif;color:var(--brand-blue)}
.company-info{margin-bottom:3rem}

/* ローディング */
.loader-overlay{position:fixed;inset:0;display:grid;place-items:center;background:rgba(255,255,255,.9);z-index:2000;transition:opacity 300ms ease}
.loader-overlay.hidden{opacity:0;pointer-events:none}
.loader-gear{width:64px;height:64px;background:url('assets/gear.svg') center/contain no-repeat;animation:spin 1.2s linear infinite}
.loader-text{margin-top:.6rem;color:var(--brand-blue);font-weight:700;letter-spacing:.2em;text-transform:uppercase}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}

/* スクロールアニメ */
.reveal{opacity:0;transform:translateY(24px);transition:opacity 600ms ease,transform 600ms ease}
.reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){.reveal{transition:none;opacity:1;transform:none}}