/* Banner区域（欧美科技风） */
.contact-banner {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #103F80 100%);
    color: white;
    padding: 8rem 0 6rem;
    margin-top: 10px;
    position: relative;
    overflow: hidden;
}

    /* Banner装饰元素 */
    .contact-banner::before {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 50%;
        height: 100%;
        background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
        opacity: 0.3;
    }

.banner-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.contact-banner h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.contact-banner p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 800px;
    line-height: 1.8;
}

/* 核心内容区 */
.contact-main {
    padding: 6rem 0;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

/* 左侧内容区（欧美科技风信息展示） */
.contact-info {
    background-color: var(--primary-light);
    padding: 3rem;
    border-radius: 8px;
    border: 1px solid var(--border-gray);
    height: 100%;
}

    .contact-info h2 {
        color: var(--primary-dark);
        font-size: 1.8rem;
        font-weight: 600;
        margin-bottom: 2rem;
        position: relative;
        padding-bottom: 1rem;
    }

        .contact-info h2::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 3px;
            background-color: var(--primary-blue);
        }

.contact-info-card {
    margin-bottom: 2.5rem;
}

    .contact-info-card h3 {
        color: var(--primary-dark);
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 0.8rem;
    }

        .contact-info-card h3 i {
            color: var(--primary-blue);
            font-size: 1.4rem;
        }

    .contact-info-card p {
        color: #4A5568;
        font-size: 1rem;
        line-height: 1.7;
    }

    .contact-info-card a {
        color: var(--primary-blue);
        text-decoration: none;
        font-weight: 500;
    }

        .contact-info-card a:hover {
            color: var(--hover-blue);
            text-decoration: underline;
        }

.service-level {
    background-color: white;
    padding: 2rem;
    border-radius: 6px;
    margin-top: 2rem;
    border-left: 4px solid var(--primary-blue);
}

    .service-level h4 {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--primary-dark);
        margin-bottom: 1rem;
    }

    .service-level ul {
        list-style: none;
        padding-left: 0;
    }

    .service-level li {
        margin-bottom: 0.8rem;
        display: flex;
        align-items: flex-start;
        gap: 0.8rem;
    }

        .service-level li i {
            color: var(--success-green);
            margin-top: 0.3rem;
        }

/* 右侧表单区 */
.contact-form {
    background-color: white;
    padding: 3rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border: 1px solid var(--border-gray);
}

    .contact-form h2 {
        color: var(--primary-dark);
        font-size: 1.8rem;
        font-weight: 600;
        margin-bottom: 2rem;
        text-align: center;
    }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

    .form-group label {
        display: block;
        margin-bottom: 0.7rem;
        color: var(--secondary-gray);
        font-weight: 500;
        font-size: 0.95rem;
    }

.form-control {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 1px solid var(--border-gray);
    border-radius: 4px;
    font-size: 1rem;
    color: var(--secondary-gray);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

    .form-control:focus {
        outline: none;
        border-color: var(--primary-blue);
        box-shadow: 0 0 0 3px rgba(62, 146, 204, 0.1);
    }

textarea.form-control {
    min-height: 150px;
    resize: vertical;
    line-height: 1.6;
}

/* 验证码区域 */
.captcha-group {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
}

#captcha-canvas {
    border: 1px solid var(--border-gray);
    border-radius: 4px;
    cursor: pointer;
    background-color: var(--primary-light);
}

.form-btn {
    width: 100%;
    background-color: var(--primary-dark);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 4px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 1rem;
}

    .form-btn:hover {
        background-color: #0C3078;
    }
/* 响应式适配 */
@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-banner h1 {
        font-size: 2.5rem;
    }

    .contact-main {
        padding: 4rem 0;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        padding: 2rem;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        gap: 1.5rem;
    }

        .nav-menu.show {
            display: flex;
        }

    .navbar-toggler {
        display: block;
    }

    .contact-banner {
        padding: 6rem 0 4rem;
    }

        .contact-banner h1 {
            font-size: 2rem;
        }

        .contact-banner p {
            font-size: 1.1rem;
        }

    .form-row {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-info, .contact-form {
        padding: 2rem 1.5rem;
    }

    .captcha-group {
        grid-template-columns: 1fr;
    }

    #captcha-canvas {
        height: 80px;
    }
}

@media (max-width: 576px) {
    .header-container {
        padding: 1rem;
    }

    .banner-container, .contact-main, .footer-container {
        padding: 0 1rem;
    }

    .contact-banner h1 {
        font-size: 1.8rem;
    }
}