/* Tech Minimal UI (MVP) */
:root{--bg:#f6f9ff;--card:#fff;--text:#0f172a;--muted:#64748b;--line:#e7eef7;--primary:#2563eb;--primary2:#1d4ed8;--danger:#ef4444;--radius:18px;--shadow:0 10px 30px rgba(15,23,42,.08);--shadow2:0 6px 18px rgba(15,23,42,.08);--font: ui-sans-serif,system-ui,-apple-system,"Segoe UI","Noto Sans JP","Hiragino Sans","Yu Gothic","Meiryo",sans-serif;}
*{box-sizing:border-box}html,body{height:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:radial-gradient(1200px 600px at 50% -10%, rgba(37,99,235,.12), transparent 55%), var(--bg);}
a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:20px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:900}
.badge{font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(37,99,235,.12);color:var(--primary);font-weight:900}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:860px){.grid2{grid-template-columns:1fr}.container{padding:14px}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.card-body{padding:18px}
.h1{font-size:22px;margin:0 0 6px;font-weight:900}.h2{font-size:16px;margin:0 0 10px;font-weight:900}
.muted{color:var(--muted);font-size:13px}
.label{display:block;font-size:12px;color:var(--muted);margin:10px 0 6px;font-weight:800}
.input{width:100%;border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 12px;outline:none;font-size:14px}
.input:focus{border-color:rgba(37,99,235,.55);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.row{display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);font-weight:900;cursor:pointer;box-shadow:var(--shadow2)}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:linear-gradient(180deg,var(--primary),var(--primary2));border-color:transparent;color:#fff}
.btn.danger{background:rgba(239,68,68,.08);border-color:rgba(239,68,68,.25);color:#b91c1c}
.hr{border:0;border-top:1px solid var(--line);margin:14px 0}
.notice{padding:10px 12px;border-radius:12px;background:rgba(37,99,235,.08);border:1px solid rgba(37,99,235,.15);color:#1e40af;font-weight:800}
.notice.danger{background:rgba(239,68,68,.08);border-color:rgba(239,68,68,.22);color:#991b1b}
.kv{margin-top:10px;padding:12px;border-radius:14px;background:#fbfdff;border:1px dashed var(--line);font-size:13px}
.kv b{font-weight:900}
.footer{padding:14px 0;text-align:center;color:var(--muted);font-size:12px}