* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background-color: #f0f9ff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    display: flex;
    width: 100%;
    max-width: 1100px;
    min-height: 500px;
    background-color: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 30px rgba(0, 104, 179, 0.15);
}

/* 左侧宣传区域 */
.promo-section {
    flex: 1;
    background: linear-gradient(135deg, #a8e6cf 0%, #dcedc1 100%);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.promo-content {
    z-index: 2;
    position: relative;
}

.promo-title {
    color: #2a6c8c;
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.promo-subtitle {
    color: #3a8cb3;
    font-size: 1.4rem;
    margin-bottom: 30px;
    font-weight: 500;
}

.promo-features {
    list-style: none;
    margin-top: 40px;
}

.promo-features li {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    color: #2a6c8c;
    font-size: 1.1rem;
}

.promo-features i {
    background-color: rgba(255, 255, 255, 0.7);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: #3a8cb3;
}

.promo-image {
    text-align: center;
    margin-top: 30px;
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    height: 200px;
}

.promo-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.promo-image:hover img {
    transform: scale(1.03);
}

/* 装饰元素 */
.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
}


/* 右侧登录区域 */
.login-section {
    flex: 1;
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background-color: white;
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
}

.logo-icon img {
  width: 100%;
}
.logo-icon i {
    color: white;
    font-size: 1.8rem;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2a6c8c;
}

.login-title {
    color: #3a8cb3;
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.login-subtitle {
    color: #7a7a7a;
    font-size: 1rem;
}

.login-form {
    width: 100%;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: #3a8cb3;
    font-weight: 500;
    font-size: 1rem;
}

.form-input {
    width: 100%;
    padding: 15px 50px;
    border: 2px solid #e1f0fa;
    border-radius: 12px;
    font-size: 1rem;
    color: #333;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #3a8cb3;
    box-shadow: 0 0 0 3px rgba(58, 140, 179, 0.1);
}

.input-icon {
    position: absolute;
    left: 20px;
    top: 45px;
    color: #3a8cb3;
}

.captcha-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.captcha-input {
    flex: 1;
}

.captcha-image {
    flex-shrink: 0;
    width: 140px;
    height: 56px;
    background: linear-gradient(45deg, #a8e6cf, #dcedc1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.8rem;
    color: #2a6c8c;
    letter-spacing: 5px;
    cursor: pointer;
    user-select: none;
    transition: transform 0.3s ease;
}

.captcha-image:hover {
    transform: scale(1.05);
}

.captcha-image:active {
    transform: scale(0.98);
}

.options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    font-size: 0.95rem;
}

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

.remember-me input {
    margin-right: 8px;
}

.remember-me label {
    color: #555;
}

.forgot-password {
    color: #3a8cb3;
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #2a6c8c;
    text-decoration: underline;
}

.login-button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(to right, #3a8cb3, #2a6c8c);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 25px;
}

.login-button:hover {
    background: linear-gradient(to right, #2a6c8c, #1d4f6e);
    transform: translateY(-2px);
    box-shadow: 0 7px 14px rgba(42, 108, 140, 0.2);
}

.login-button:active {
    transform: translateY(0);
}

.footer-links {
    text-align: center;
    margin-top: 20px;
    color: #777;
    font-size: 0.9rem;
}

.footer-links a {
    color: #3a8cb3;
    text-decoration: none;
    margin: 0 8px;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .container {
        flex-direction: column;
        max-width: 500px;
    }

    .promo-section {
        padding: 30px;
    }

    .promo-title {
        font-size: 2rem;
    }

    .login-section {
        padding: 40px 30px;
    }

    .promo-image {
        height: 250px;
    }

    .captcha-container {
        flex-direction: column;
        align-items: flex-start;
    }

    .captcha-image {
        width: 100%;
        margin-top: 10px;
    }
}

@media (max-width: 480px) {
    .options {
        flex-direction: column;
        align-items: flex-start;
    }

    .forgot-password {
        margin-top: 10px;
    }

    .promo-title {
        font-size: 1.8rem;
    }

    .promo-subtitle {
        font-size: 1.2rem;
    }

    .promo-image {
        height: 200px;
    }
}

/* 动画 */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating-element {
    animation: float 5s ease-in-out infinite;
}