:root{--bg:#f5f7fb;--card:#fff;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--primary:#111827;--good:#047857;--bad:#b91c1c;--warn-bg:#fff7ed;--warn-border:#fed7aa}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:Arial,Helvetica,sans-serif;background:linear-gradient(180deg,#fff 0%,var(--bg) 100%);color:var(--text)}.page{width:100%;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{width:100%;max-width:760px;background:var(--card);border:1px solid var(--border);border-radius:22px;padding:24px;box-shadow:0 20px 60px rgba(17,24,39,.10)}.card.wide{max-width:900px}.brand{display:flex;gap:14px;align-items:center;margin-bottom:22px}.logo{width:54px;height:54px;border-radius:16px;background:linear-gradient(135deg,#111827,#6d28d9);color:#fff;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:900}h1{margin:0;font-size:28px;line-height:1.1}p{margin:6px 0 0;color:var(--muted)}.form{display:flex;flex-direction:column;gap:10px}label{font-size:14px;font-weight:800;color:#374151;margin-top:6px}input{width:100%;padding:14px;border:1px solid #d1d5db;border-radius:14px;font-size:16px;outline:none;background:#fff}button{margin-top:8px;border:0;border-radius:14px;padding:14px 16px;background:var(--primary);color:#fff;font-size:16px;font-weight:900;cursor:pointer;text-align:center}.msg{min-height:22px;margin-top:14px;font-size:15px;font-weight:700}.msg.good{color:var(--good)}.msg.bad{color:var(--bad)}.hint{margin-top:14px;color:var(--muted);font-size:13px;line-height:1.5}.warning{margin-bottom:16px;padding:12px 14px;border:1px solid var(--warn-border);background:var(--warn-bg);border-radius:16px;color:#9a3412;font-size:14px;line-height:1.45}.hidden{display:none!important}@media(max-width:560px){.page{padding:14px;align-items:flex-start}.card{padding:18px;border-radius:18px}h1{font-size:23px}}