:root{--primary-color: #008080;--bg-color: #f0f4f8;--box-bg-color: #fff;--text-color: #333;--light-text-color: #666;--border-color: #ddd;--font-family: "Noto Sans JP", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-color);display:flex;justify-content:center;align-items:center;min-height:100vh}.auth-container{width:100%;max-width:450px;padding:20px}.auth-box{background-color:var(--box-bg-color);padding:40px;border-radius:8px;box-shadow:0 4px 20px #0000000d}h1{text-align:center;font-size:1.8rem;margin-bottom:10px;color:var(--primary-color)}.auth-description{text-align:center;color:var(--light-text-color);margin-bottom:30px}.form-group{margin-bottom:20px}.form-group label{display:block;font-weight:700;margin-bottom:8px;font-size:.9rem}.form-control,input[type=text],input[type=email],input[type=password]{width:100%;padding:12px;border:1px solid var(--border-color);border-radius:4px;font-size:1rem;font-family:var(--font-family)}input[type=text]:focus,input[type=email]:focus,input[type=password]:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #00808033}.btn{display:block;width:100%;padding:12px;border:none;border-radius:4px;text-decoration:none;font-weight:700;font-size:1rem;cursor:pointer;transition:background-color .2s ease}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:#066}.form-group-inline{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;margin-bottom:20px}.remember-me{display:flex;align-items:center}.remember-me input[type=checkbox]{margin-right:8px}.forgot-password{color:var(--primary-color);text-decoration:none}.forgot-password:hover{text-decoration:underline}.terms{display:flex;align-items:center;font-size:.9rem}.terms input[type=checkbox]{margin-right:8px}.terms a{color:var(--primary-color);text-decoration:none}.terms a:hover{text-decoration:underline}.auth-link{text-align:center;margin-top:30px;font-size:.9rem}.auth-link a{color:var(--primary-color);font-weight:700;text-decoration:none}.auth-link a:hover{text-decoration:underline}.auth-logo{text-align:center;margin-bottom:1.5rem}.auth-logo img{width:100px;height:auto;display:inline-block}