*{box-sizing:border-box}
:root{--bg:#f6f5f1;--surface:#fff;--text:#111;--muted:#6b665e;--border:#ded8ca;--dark:#111}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{color:inherit}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:18px 28px;background:#fff;border-bottom:1px solid var(--border);gap:16px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{width:42px;height:42px;border-radius:14px;background:#111;color:#fff;display:grid;place-items:center;font-weight:800}
.brand small{display:block;color:var(--muted)}
.nav{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.nav a{text-decoration:none}
.container{width:min(1100px,calc(100% - 32px));margin:32px auto}
.card{background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:26px;box-shadow:0 18px 45px rgba(0,0,0,.06);margin-bottom:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:14px;border:1px solid var(--border);text-decoration:none;background:#fff}
.btn-dark{background:#111;color:#fff;border-color:#111}
.pill,code{display:inline-block;background:#efede7;border-radius:999px;padding:4px 10px}
.muted{color:var(--muted)}
table{border-collapse:collapse;width:100%;background:#fff;border-radius:18px;overflow:hidden}
th,td{border:1px solid var(--border);padding:12px;text-align:left;vertical-align:top}
th{background:#f0ede6}
input{width:100%;padding:12px;border:1px solid var(--border);border-radius:14px;font-size:16px}
label{font-weight:700}
.form{display:grid;gap:12px;max-width:520px}
.notice{padding:12px;border-radius:14px;background:#e8fff0;border:1px solid #9de0b0}
.notice.error{background:#ffecec;border-color:#e4a0a0}
.debug-box{margin:14px 0;padding:14px;border:1px dashed var(--border);border-radius:14px;background:#faf8f2;word-break:break-all}
.footer{text-align:center;color:var(--muted);padding:28px}
@media(max-width:760px){.topbar{align-items:flex-start;flex-direction:column}.nav{width:100%}}