body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(120deg, #f5f7fa 0%, #c3cfe2 100%);
    font-family: 'Noto Sans SC', sans-serif;
}

.login-container {
    display: flex;
    gap: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.login-box {
    padding: 2rem;
    width: 320px;
}

h2 {
    color: #333;
    text-align: center;
    margin-bottom: 2rem;
}

.form-item {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-item input:not([type="checkbox"]) {
    width: 100%;
    padding: 10px;
    border: none;
    border-bottom: 2px solid #ddd;
    background: transparent;
    transition: border-color 0.3s;
    outline: none;
    font-size: 16px;
}

.floating-label {
    position: absolute;
    left: 0;
    top: 10px;
    color: #666;
    transition: 0.3s;
    pointer-events: none;
}

.form-item input:focus ~ .floating-label,
.form-item input:not(:placeholder-shown) ~ .floating-label {
    top: -20px;
    font-size: 14px;
    color: #2c5282;
}

.form-item input:focus {
    border-bottom-color: #2c5282;
}

.captcha-group {
    display: flex;
    gap: 1rem;
}

.captcha-input {
    flex: 1;
    position: relative;
}

#captchaImage {
    height: 40px;
    border-radius: 4px;
    cursor: pointer;
}

.remember-me {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: #666;
}

button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(120deg, #2c5282 0%, #4a69bd 100%);
    border: none;
    border-radius: 6px;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 82, 130, 0.2);
}

.error-message {
    color: #ff4444;
    font-size: 14px;
    text-align: center;
    display: block;
}

.notice-board {
    width: 300px;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    border: 1px solid #e2e8f0;
}

.notice-board h3 {
    margin: 0 0 1rem 0;
    color: #333;
    text-align: center;
}

.notice-content {
    height: 100%;
}

.notice-content textarea {
    width: 100%;
    height: calc(100% - 2rem);
    padding: 1rem;
    border: none;
    background: transparent;
    resize: none;
    font-size: 14px;
    line-height: 1.6;
    color: #666;
}

@media (max-width: 768px) {
    .login-container {
        flex-direction: column;
    }
    
    .notice-board {
        width: 100%;
    }
}