:root{font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;color:#183153;background:#f3f7fd;color-scheme:light}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(ellipse at top,#e0ecff,transparent 65%)}main{width:100%;max-width:420px;background:#fff;border:1px solid #e1e8f4;border-radius:24px;padding:38px;box-shadow:0 16px 60px #264c8b0c}h1{margin:16px 0 4px;font-size:30px;letter-spacing:2px}.subtitle{color:#697b94;margin:0 0 30px}label{display:block;font-weight:600;font-size:14px;margin-bottom:10px}input{width:100%;height:48px;padding:0 14px;border:1px solid #c8d5e8;border-radius:10px;font:inherit;outline:none}input:focus{border-color:#3777e8;box-shadow:0 0 0 3px #3777e81a}button{width:100%;margin-top:18px;height:48px;border:0;border-radius:10px;background:#2868dc;color:white;font:inherit;font-weight:600;cursor:pointer}button:disabled{opacity:.6;cursor:wait}.hint{margin:24px 0 0;font-size:13px;line-height:1.8;color:#71829b}#access-error{font-size:13px;line-height:1.5;color:#b52e42;margin:12px 0 0}