*{box-sizing:border-box;margin:0;padding:0}body{color:#333;background:#f5f5f5;font-family:Aeonik,Source Han Sans JP,Arial,Helvetica,sans-serif}.login-container{justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{text-align:center;background:#fff;border-radius:8px;width:100%;max-width:400px;padding:48px 40px;box-shadow:0 2px 8px #0000001a}.login-logo{margin-bottom:16px}.login-card h1{margin-bottom:8px;font-size:24px;font-weight:600}.login-subtitle{color:#888;margin-bottom:32px;font-size:14px}.login-button{color:#fff;background:#34cdd7;border-radius:6px;width:100%;padding:10px 16px;font-size:16px;font-weight:500;text-decoration:none;transition:background .2s;display:block}.login-button:hover{background:#2bb8c2}.login-button--disabled{color:#888;cursor:not-allowed;pointer-events:none;background:#d9d9d9}.login-error{color:#c0392b;margin-bottom:0}