:root{color-scheme:light;--blue:#1769aa;--dark:#12344b;--line:#d7e0e6;--bg:#eef3f6;--ok:#e8f5e9;--bad:#fdecea}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#263238;font-family:Arial,sans-serif;line-height:1.5}.page{max-width:760px;margin:5vh auto;padding:20px}.narrow{max-width:620px}.card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:28px;box-shadow:0 4px 18px #183b5014}h1{margin-top:0;color:var(--dark);font-weight:500}form{display:grid;gap:14px}label{display:grid;gap:5px;font-size:14px;color:#455a64}input,select,button{font:inherit;width:100%;padding:10px 12px;border:1px solid #b8c7d1;border-radius:4px;background:#fff}input:focus,select:focus{outline:2px solid #79b8e8;border-color:var(--blue)}button,.button{display:inline-block;width:auto;padding:10px 16px;border:1px solid var(--blue);border-radius:4px;background:var(--blue);color:#fff;text-decoration:none;cursor:pointer}.button.secondary{background:#fff;color:var(--blue)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.muted{color:#607d8b;font-size:13px}.ok,.error{padding:12px;border-radius:4px}.ok{background:var(--ok);color:#256029}.error{background:var(--bad);color:#8a1f17}.trap{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}a{color:var(--blue)}@media(max-width:600px){.page{margin:0 auto;padding:12px}.card{padding:20px}}