/* 基础布局样式 */
:root {
    --primary-color: #ff7a00;
    --text-color: #2d3e50;
    --light-bg: #f8f9fa;
    --transition-time: 0.3s;
}

.sustainability-container {
    padding: 60px 0;
}

.container {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

/* 响应式容器宽度 */
@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}

.row-30 > * {
    padding-right: 15px;
    padding-left: 15px;
    margin-bottom: 30px;
}

/* 响应式网格布局 */
.col-12 {
    flex: 0 0 100%;
    max-width: 100%;
}

@media (min-width: 768px) {
    .col-md-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }

    .col-md-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* 标题样式 */
.pro_tit {
    position: relative;
    margin-bottom: 30px;
    font-weight: 700;
    color: var(--text-color);
}

.font55 {
    font-size: 55px;
    line-height: 1.2;
}

.font30 {
    font-size: 30px;
}

.text-center {
    text-align: center;
}

.mb-100 {
    margin-bottom: 100px;
}

.mb-30 {
    margin-bottom: 30px;
}

/* 分隔线样式 */
.section-divider {
    height: 3px;
    width: 80px;
    background-color: var(--primary-color);
    margin: 0 auto 60px;
}

/* 内容区块样式 */
.sustainability-section {
    display: flex;
    align-items: center;
    margin-bottom: 80px;

    .sustainability-section.wow.animate__fadeIn {
        opacity: 1;
    }

    /* 文本内容动画延迟 */
    .animate__fadeInRight {
        animation-delay: 0.3s;
    }

    .animate__fadeInLeft {
        animation-delay: 0.3s;
    }
}

.section-image {
    width: 60%; /* 图片占比 */
    height: auto;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-time) ease-in-out;
}

/* 图片悬停效果 */
.section-image:hover {
    transform: scale(1.03);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .font55 {
        font-size: 45px;
    }

    .font30 {
        font-size: 26px;
    }
}

@media (max-width: 768px) {
    .sustainability-container {
        padding: 40px 0;
    }

    .sustainability-section {
        flex-direction: column;
        margin-bottom: 60px;
    }

    .section-image {
        width: 90%;
        margin-bottom: 30px;
    }

    .font55 {
        font-size: 36px;
    }

    .font30 {
        font-size: 24px;
    }

    .mb-100 {
        margin-bottom: 60px;
    }
}

@media (max-width: 576px) {
    .font55 {
        font-size: 28px;
    }

    .font30 {
        font-size: 20px;
    }

    .section-divider {
        width: 60px;
        margin-bottom: 40px;
    }
}