:root{--ink-1:#0d0e10;--ink-2:#141517;--ink-3:#1b1d20;--ink-4:#2a2d31;--silver-0:#a8acb3;--silver-1:#c4c8cd;--silver-3:#f8f9fb;--cyan:#1ab8ee;--cyan-bright:#4cc8f5;--verify:#34d399;--deny:#f87171}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--ink-1);color:var(--silver-3);font-family:Segoe UI,Helvetica,Arial,sans-serif;display:flex;align-items:center;justify-content:center}.card{background:var(--ink-2);border:1px solid var(--ink-4);border-radius:14px;padding:34px;width:360px}.mark{font-weight:700;letter-spacing:.5px;color:var(--cyan)}.mark,h1{font-size:20px}h1{font-weight:600;margin:14px 0 6px}p{color:var(--silver-1);font-size:14px;line-height:22px;margin:0 0 18px}input{width:100%;background:var(--ink-3);border:1px solid var(--ink-4);border-radius:8px;color:var(--silver-3);font-size:15px;padding:12px 14px;margin-bottom:14px}input:focus{outline:none;border-color:var(--cyan)}button{width:100%;background:var(--cyan);color:var(--ink-1);border:0;border-radius:9999px;font-size:15px;font-weight:600;padding:12px;cursor:pointer}button:hover:not(:disabled){background:var(--cyan-bright)}button:disabled{opacity:.5;cursor:default}.err{color:var(--deny);font-size:13px;margin:-6px 0 14px}.ok{color:var(--verify);font-weight:600}.foot{margin-top:18px;font-size:13px;color:var(--silver-0)}a{color:var(--cyan);text-decoration:none}.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;background:var(--ink-3);border:1px solid var(--verify);color:var(--verify);padding:12px 20px;border-radius:10px;font-size:14px;font-weight:600;box-shadow:0 10px 34px rgba(0,0,0,.55);z-index:50;animation:toast-in .25s ease-out}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,-10px)}to{opacity:1;transform:translate(-50%)}}