:root{--ink:#111827;--muted:#64748b;--line:#e5e7eb;--bg:#f8fafc;--card:#fff;--accent:#111827;--soft:#f1f5f9}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Hiragino Sans','Yu Gothic',Meiryo,sans-serif;color:var(--ink);background:#fff;line-height:1.8}a{color:inherit;text-decoration:none}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:18px clamp(18px,4vw,56px)}.logo{font-weight:800;letter-spacing:.08em;line-height:1.05}.site-nav{display:flex;gap:24px;font-size:13px;letter-spacing:.08em}.nav-toggle{display:none;background:none;border:0;font-size:24px}.hero{min-height:520px;display:grid;place-items:center;padding:72px 20px;background:linear-gradient(135deg,#fff,#f8fafc)}.hero-inner{max-width:1080px;width:100%}.hero h1{font-size:clamp(34px,6vw,76px);line-height:1.2;letter-spacing:.04em;margin:0 0 24px}.hero p{max-width:820px;color:var(--muted);font-size:17px}.section{padding:80px clamp(18px,5vw,72px)}.section-title{font-size:clamp(26px,4vw,44px);margin:0 0 24px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.grid.two{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:0 10px 30px rgba(15,23,42,.04)}.card time,.meta{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;border:0;border-radius:999px;padding:12px 22px;font-weight:700;cursor:pointer}.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.list{display:grid;gap:14px}.list-item{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:20px;border-bottom:1px solid var(--line)}.article{max-width:860px;margin:auto;padding:70px 20px}.article h1{font-size:clamp(28px,4vw,48px);line-height:1.35}.article-body{margin-top:36px}.form{max-width:760px}.form label{display:block;font-weight:700;margin:16px 0 6px}.form input,.form textarea,.form select{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font:inherit}.form textarea{min-height:160px}.notice{padding:14px 18px;background:#ecfdf5;border:1px solid #bbf7d0;border-radius:12px}.company-table{width:100%;border-collapse:collapse}.company-table th,.company-table td{padding:16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.site-footer{padding:42px clamp(18px,5vw,72px);border-top:1px solid var(--line);background:var(--bg)}.admin-layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.admin-side{background:#0f172a;color:#fff;padding:24px}.admin-side a{display:block;padding:10px 0;color:#e2e8f0}.admin-main{padding:32px}.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{padding:12px;border-bottom:1px solid var(--line);text-align:left}.actions{display:flex;gap:8px;flex-wrap:wrap}.danger{background:#dc2626}.login-box{max-width:420px;margin:80px auto;padding:30px;border:1px solid var(--line);border-radius:22px}@media(max-width:800px){.site-nav{display:none;position:absolute;left:0;right:0;top:70px;background:#fff;border-bottom:1px solid var(--line);padding:18px;flex-direction:column}.site-nav.open{display:flex}.nav-toggle{display:block}.grid,.grid.two{grid-template-columns:1fr}.list-item{grid-template-columns:1fr}.admin-layout{grid-template-columns:1fr}.admin-side{position:relative}.hero{min-height:420px}}
.thumb-preview{display:block;width:180px;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);background:var(--soft);margin-top:8px}.table-thumb{width:88px;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);background:var(--soft)}.admin-help{color:var(--muted);font-size:13px;margin:6px 0 0}
.qr-panel{margin:12px 0 18px}.qr-code{display:inline-block;padding:12px;border:1px solid var(--line);background:#fff}.qr-code img,.qr-code canvas{display:block}