:root{--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--accent:#0f766e;--danger:#b91c1c}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;color:var(--ink);background:var(--bg);line-height:1.8}a{color:var(--accent)}.app-header{background:#fff;border-bottom:1px solid var(--line);padding:12px 20px}.app-header .brand{font-weight:700;text-decoration:none;color:var(--ink)}.app-header .brand span{font-weight:400;font-size:13px;color:var(--muted);margin-left:6px}.container{max-width:900px;margin:0 auto;padding:24px 20px 64px}.container.narrow{max-width:460px}h1{font-size:22px;margin:0 0 16px}h2{font-size:17px;margin:32px 0 12px;padding-bottom:6px;border-bottom:1px solid var(--line)}.card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:16px 18px;margin-bottom:16px}.muted{color:var(--muted);font-size:13px}.error{color:var(--danger)}.field{margin-bottom:14px}.field>label{display:block;font-size:13px;font-weight:600;margin-bottom:4px}.field .req{color:var(--danger);font-size:11px;margin-left:6px}.field .hint{display:block;font-size:12px;color:var(--muted);margin-top:3px}input[type=date],input[type=email],input[type=number],input[type=password],input[type=text],input[type=time],select,textarea{width:100%;padding:8px 10px;border:1px solid #cbd5e1;border-radius:6px;font:inherit;background:#fff}textarea{min-height:84px;resize:vertical}.row2{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}@media (max-width:560px){.row2{grid-template-columns:1fr}}.btn{display:inline-block;padding:9px 18px;border:0;border-radius:6px;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}.btn:disabled{opacity:.5;cursor:default}.btn-plain{background:#fff;color:var(--ink);border:1px solid #cbd5e1}.issues{border:1px solid #fecaca;background:#fef2f2;border-radius:8px;padding:12px 16px;margin-bottom:16px}.issues h3{margin:0 0 8px;font-size:14px;color:var(--danger)}.issues li{font-size:13px}.issues .warn{color:#92400e}table{width:100%;border-collapse:collapse;font-size:14px;background:#fff}td,th{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#f1f5f9;white-space:nowrap}.tablewrap{overflow-x:auto}