.container {
    width: 1400px;
    margin: 0 auto;
}
.industry-section {
    padding: 60px 0;
}

.bg-01 {
    background: linear-gradient(135deg, #e6f0fa 0%, #f0f5fb 100%);
}
.bg-02 {
    background: #ffffff;
}
.bg-03 {
    background: #f8fafc;
}
.bg-04 {
    background: var(--secondary-color);
}
.bg-05 {
    background: #ffffff;
    border-bottom: 1px solid #e9edf2;
}


.page-main-title {
    font-size: 36px;
    line-height: 1.3;
    margin-bottom: 22px;
    font-weight: 700;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    line-height: 1.25;
    color: var(--title-color);
    margin-bottom: 30px;
}

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

.sub-section-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}
.card-title {
    font-size: 18px;
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 8px;
}
.text-normal {
    line-height: 1.7;
    font-size: 16px;
}
.btn-primary {
    padding: 12px 26px;
    background-color: var(--secondary-color);
    color: #fff;
    border-radius: 30px;
    text-decoration: none;
    display: inline-block;
    transition: 0.25s ease;
}
.btn-primary:hover {
    background: #1d3b70;
    transform: translateY(-2px);
}
.btn-outline {
    padding: 12px 26px;
    border: 2px solid #fff;
    color: #fff;
    border-radius: 30px;
    text-decoration: none;
    display: inline-block;
    transition: 0.25s ease;
    margin-left: 12px;
}
.btn-outline:hover {
    background: #ffffff22;
}
.btn-text {
    color: #3964fe;
    font-weight: 500;
    text-decoration: none;

}
.btn-text:hover {
    text-decoration: underline;
}

/* Hero */
.steel-hero {
    min-height: 80vh;
    background:
            linear-gradient(rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.55)),
            url("/dist/img/application_03.jpg") center/cover no-repeat;
    display: flex;
    align-items: center;
    color: #ffffff;
    gap: 20px;
}

.hero-text{
    width: 100%;
}

.hero-desc {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 32px;
    opacity: 0.95;
    color: #fff;
}

.data-grid {
    width: 50%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 25px;
}
.data-card {
    border-radius: 5px;
    text-align: center;
    /*border: 1px solid #ccc;*/
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: start;
}
.data-num {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
}
.data-label {
    font-size: 15px;
    line-height: 1.5;
}

/* Overview */
.overview-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 45px;
    align-items: center;
}
.overview-img-box img {
    width: 100%;
    max-height: 350px;
    border-radius: 10px;
    object-fit: cover;
}

/* 生产流程 */
.process-section {
    /* background-color: var(--light-blue); */
    background-color: var(--secondary-color);
}
.process-horizontal {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding: 20px 0 30px;
}
.process-horizontal::-webkit-scrollbar {
    height: 6px;
}
.process-horizontal::-webkit-scrollbar-thumb {
    background: #c5d3e7;
    border-radius: 4px;
}
.process-card {
    min-width: 220px;
    background: #fff;
    border-radius: 10px;
    padding: 24px 18px;
    flex-shrink: 0;
}
.process-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
}
.process-desc {
    font-size: 16px;
    margin-bottom: 12px;
    line-height: 1.6;
}

/* 挑战解决方案 */
.challenge-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 60px;
}
.challenge-item.reverse {
    grid-template-columns: 1fr 1fr;
    direction: rtl;
}
.challenge-item.reverse .challenge-content {
    direction: ltr;
}
.challenge-img-box img {
    width: 100%;
    max-height: 350px;
    border-radius: 12px;
    object-fit: cover;
}
.text-mark {
    color: var(--secondary-color);
    display: block;
    margin: 8px 0 6px;
}
.challenge-paragraph {
    margin-bottom: 14px;
}

/* 案例 */
.case-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 35px;
    align-items: center;
}

.case-img-box{
    width: 100%;
    max-height: 400px;
}

.case-img-box img {
    width: 100%;
    max-height: 400px;

    border-radius: 10px;
    object-fit: cover;
}
.case-list {
    margin-top: 12px;
}
.case-list li {
    list-style: none;
    padding-left: 22px;
    position: relative;
    margin-bottom: 10px;
    line-height: 1.6;
}
.case-list li::before {
    content: "✓";
    color: #28a745;
    position: absolute;
    left: 0;
    font-weight: bold;
}


.why-choose-us{
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin-top: 30px;
}
.why-card {
    text-align: center;
    padding: 25px 16px;
    border: 1px solid #ccc;

}
.why-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
}
.why-num {
    font-size: 24px;
    font-weight: 600;
}
.why-desc {
    color: var(--text-color);
    margin-top: 4px;
}

/* 产品 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}
.product-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: 0.2s ease;
}

.product-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: all 0.3s;
}

.product-card img:hover{
    transform: scale(1.05);
}

.product-info {
    padding: 20px;
}
.product-desc {
    font-size: 14px;
    margin: 6px 0 12px;
}

/* FAQ */
.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-question {
    width: 100%;
    padding: 16px 20px;
    background: #fff;
    border: none;
    text-align: left;
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition:
            max-height 0.3s ease,
            padding 0.3s ease;
    font-size: 16px;
}
.faq-item.open .faq-answer {
    padding: 0 20px 18px;
    max-height: 2000px;
}

/* CTA底部横幅 */
.cta-banner {
    background:
            linear-gradient(var(--secondary-color));
    color: #fff;
    text-align: center;
    padding: 90px 0;
}
.cta-banner .section-title {
    font-size: 34px;
    margin-bottom: 16px;
    color: #fff;
}
.cta-banner .text-normal {
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.92;
    line-height: 1.8;
    color: #fff;
}

/* 底部链接 */
.link-group {
    margin-bottom: 30px;
}
.link-group a {
    color: var(--text-color);
    text-decoration: none;
    margin-right: 14px;
    line-height: 1.8;
}
.link-group a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}