/* 关于页基础样式 */
:root {
    --primary-yellow: #f9b100;
    --dark-blue: #0a1c30;
    --light-gray: #f8f9fa;
    --text-gray: #666;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

/* 英雄区样式 */
.about-hero {
    background-color: var(--dark-blue);
    color: var(--white);
    position: relative;
}

.hero-bg {
    background: url('../images/about-hero-bg.jpg') no-repeat center center;
    background-size: cover;
    padding: 60px 0;
    position: relative;
    z-index: 1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 28, 48, 0.85);
    z-index: -1;
}

/* 面包屑 */
.about-hero .breadcrumbs {
    font-size: 14px;
    color: #ddd;
    margin-bottom: 15px;
}

.about-hero .breadcrumbs a {
    color: #ddd;
    text-decoration: none;
}

.about-hero .breadcrumbs a:hover {
    color: var(--primary-yellow);
}

.about-hero .breadcrumbs span {
    color: var(--white);
}

.about-hero h1 {
    font-size: 48px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.about-hero p {
    font-size: 18px;
    color: #eee;
    max-width: 800px;
    line-height: 1.5;
}

/* 公司简介区 */
.about-intro {
    padding: 80px 0;
    background-color: var(--white);
}

.intro-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.section-subtitle {
    font-size: 14px;
    text-transform: uppercase;
    color: var(--primary-yellow);
    font-weight: 600;
    margin-bottom: 10px;
}

.intro-text h3 {
    font-size: 28px;
    color: var(--dark-blue);
    text-transform: uppercase;
    margin-bottom: 20px;
    line-height: 1.3;
}

.intro-text p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 30px;
}

.primary-btn {
    background-color: var(--primary-yellow);
    color: var(--white);
    border: none;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.primary-btn:hover {
    background-color: var(--dark-blue);
    color: var(--white);
}

.intro-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* 核心数据统计栏 */
.stats-bar {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    text-align: center;
}

.stat-item {
    padding: 10px;
}

.stat-icon {
    font-size: 32px;
    color: var(--primary-yellow);
    margin-bottom: 15px;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--white);
}

.stat-label {
    font-size: 14px;
    color: #ccc;
    text-transform: capitalize;
    line-height: 1.4;
}

/* 核心优势区 */
.why-choose-us {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h3 {
    font-size: 28px;
    color: var(--dark-blue);
    text-transform: uppercase;
    margin-bottom: 10px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--white);
    border-radius: 5px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: rgba(249, 177, 0, 0.1);
    color: var(--primary-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
}

.advantage-item h4 {
    font-size: 18px;
    color: var(--dark-blue);
    text-transform: uppercase;
    margin-bottom: 15px;
    font-weight: 600;
}

.advantage-item p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.5;
}

/* 工厂展示区 */
.our-factory {
    padding: 80px 0;
    background-color: var(--white);
}

.factory-slider {
    position: relative;
    overflow: hidden;
}

.slider-wrapper {
    overflow: hidden;
}

.slider-track {
    display: flex;
    gap: 20px;
    transition: transform 0.5s ease;
}

.slide-item {
    flex: 0 0 calc(25% - 15px);
    padding: 15px;
    background-color: var(--light-gray);
}

.slide-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    margin-bottom: 15px;
}

.slide-item h4 {
    font-size: 16px;
    color: var(--dark-blue);
    text-transform: uppercase;
    margin-bottom: 10px;
    font-weight: 600;
}

.slide-item p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.5;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--dark-blue);
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: var(--transition);
}

.slider-btn:hover {
    background-color: var(--primary-yellow);
}

.prev-btn {
    left: -20px;
}

.next-btn {
    right: -20px;
}

/* 认证展示区 */
.our-certifications {
    padding: 60px 0;
    background-color: var(--light-gray);
}

.cert-layout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.cert-logos {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    align-items: center;
    flex: 1;
}

.cert-logos img {
    height: 60px;
    max-width: 100px;
    object-fit: contain;
}

.cert-text {
    flex: 1;
    text-align: right;
}

.cert-text p {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.outline-btn {
    background-color: transparent;
    border: 2px solid var(--dark-blue);
    color: var(--dark-blue);
    padding: 10px 25px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.outline-btn:hover {
    background-color: var(--dark-blue);
    color: var(--white);
}

/* 页脚样式适配 */
.footer {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-col h4 {
    font-size: 18px;
    text-transform: uppercase;
    margin-bottom: 20px;
    color: var(--white);
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-yellow);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--primary-yellow);
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
}

.contact-info li i {
    color: var(--primary-yellow);
    margin-top: 3px;
}

.get-directions-btn {
    display: inline-block;
    padding: 8px 15px;
    border: 1px solid var(--white);
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.get-directions-btn:hover {
    background-color: var(--primary-yellow);
    border-color: var(--primary-yellow);
}

.newsletter-form {
    display: flex;
    margin-top: 15px;
}

.newsletter-form input {
    flex: 1;
    padding: 10px 15px;
    border: none;
    font-size: 14px;
}

.newsletter-form button {
    background-color: var(--primary-yellow);
    color: var(--white);
    border: none;
    padding: 0 15px;
    cursor: pointer;
}

.footer-bottom {
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    color: #ccc;
    font-size: 14px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    margin-left: 15px;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-yellow);
}

/* ========== 响应式适配 ========== */
@media (max-width: 1200px) {
    .intro-layout {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .slide-item {
        flex: 0 0 calc(33.33% - 15px);
    }

    .cert-layout {
        flex-direction: column;
        text-align: center;
    }

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

    .cert-logos {
        justify-content: center;
    }
}

@media (max-width: 992px) {
    .about-hero h1 {
        font-size: 36px;
    }

    .slide-item {
        flex: 0 0 calc(50% - 10px);
    }

    .prev-btn {
        left: 10px;
    }

    .next-btn {
        right: 10px;
    }
}

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

    .about-hero h1 {
        font-size: 28px;
    }

    .about-intro, .why-choose-us, .our-factory {
        padding: 60px 0;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-header h3 {
        font-size: 24px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 576px) {
    .about-hero h1 {
        font-size: 24px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .slide-item {
        flex: 0 0 100%;
    }

    .cert-logos {
        gap: 20px;
    }

    .cert-logos img {
        height: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-links a {
        margin: 0 8px;
    }

    .primary-btn, .outline-btn {
        width: 100%;
        justify-content: center;
    }
}