:root {
    --primary: #1a3a6c;
    --secondary: #2c5282;
    --accent: #4c7db5;
    --light: #f0f4f8;
    --dark: #0d1b2a;
    --gray: #718096;
    --light-gray: #e2e8f0;
    --white: #ffffff;
    --warning: #e67e22;
    --success: #27ae60;
    --lang-bg: #f8fafc;
    --map-active: #e67e22;
    --map-hover: #d35400;
    --honor-gold: #f59e0b;
    --page-bg: #f5f7fa;
}

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

body {
    background-color: var(--page-bg);
    color: var(--dark);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-content {
    background-color: var(--page-bg);
    width: 100%;
}

.about-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 60px 0;
    text-align: center;
    margin-bottom: 60px;
}

.about-header h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.about-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

.company-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 80px;
    align-items: center;
}

.intro-content {
    padding: 20px 0;
}

.intro-content h2 {
    color: var(--primary);
    font-size: 1.8rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

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

.intro-content p {
    color: var(--dark);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.intro-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

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

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

.core-values {
    background-color: var(--white);
    padding: 80px 0;
    margin-bottom: 80px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    padding: 0 20px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.section-title p {
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 0 30px;
}

.value-card {
    background-color: var(--light);
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--light-gray);
}

.value-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(26, 58, 108, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: var(--primary);
    font-size: 32px;
}

.value-card h3 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.value-card p {
    color: var(--gray);
    line-height: 1.7;
    font-size: 1rem;
}

.honors-section {
    background-color: var(--white);
    padding: 80px 0;
    margin-bottom: 80px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 0 30px;
    margin-top: 40px;
}

.honor-card {
    background-color: var(--light);
    border-radius: 12px;
    padding: 20px 15px;
    text-align: center;
    border: 1px solid var(--light-gray);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.honor-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--honor-gold), var(--primary));
}

.honor-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
    border-color: var(--honor-gold);
}

.honor-icon {
    font-size: 36px;
    color: var(--honor-gold);
    margin-bottom: 10px;
    display: inline-block;
}

.honor-card h3 {
    color: var(--primary);
    font-size: 1.2rem;
    margin-bottom: 6px;
    font-weight: 600;
}

.honor-card p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

.factory-distribution {
    background-color: var(--white);
    padding: 80px 0;
    margin-bottom: 80px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.map-container {
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background-color: var(--white);
    padding: 20px;
    z-index: 1;
}

.china-map {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

.map-point {
    position: absolute;
    width: 28px;
    height: 28px;
    background-color: var(--map-active);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 4px 12px rgba(230, 126, 34, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    transform: translate(-50%, -50%);
    animation: pulse 2s infinite;
}

.map-point::after {
    content: "";
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: white;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(230, 126, 34, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(230, 126, 34, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(230, 126, 34, 0);
    }
}

.map-point:hover {
    background-color: var(--map-hover);
    transform: translate(-50%, -50%) scale(1.3);
    box-shadow: 0 6px 18px rgba(211, 84, 0, 0.8);
}

.map-tooltip {
    position: absolute;
    background: rgba(0,0,0,0.8);
    color: #fff;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 13px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s;
    z-index: 999;
}

.factory-list {
    margin-top: 50px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    padding: 0 30px;
}

.factory-item {
    background-color: var(--white);
    border-radius: 12px;
    padding: 25px;
    border-left: 4px solid var(--map-active);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.factory-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-left-color: var(--map-hover);
}

.factory-name {
    font-weight: 600;
    color: var(--primary);
    font-size: 18px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.factory-name i {
    color: var(--map-active);
    font-size: 16px;
}

.factory-address {
    color: var(--gray);
    font-size: 14px;
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.factory-address i {
    color: var(--accent);
    font-size: 14px;
    margin-top: 2px;
}

.timeline {
    background-color: var(--white);
    padding: 60px 0;
    margin-bottom: 60px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.timeline-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 30px;
}

.timeline-container::after {
    content: '';
    position: absolute;
    width: 4px;
    background-color: var(--light-gray);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
    margin-bottom: 20px;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--white);
    border: 4px solid var(--accent);
    border-radius: 50%;
    top: 20px;
    z-index: 1;
}

.timeline-left {
    left: 0;
}

.timeline-right {
    left: 50%;
}

.timeline-left::after {
    right: -10px;
}

.timeline-right::after {
    left: -10px;
}

.timeline-content {
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.timeline-year {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}

.timeline-content h3 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--dark);
    font-weight: 600;
}

.timeline-content p {
    color: var(--gray);
    line-height: 1.5;
    font-size: 0.9rem;
}

.contact-card {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 60px 40px;
    border-radius: 15px;
    text-align: center;
    margin-bottom: 80px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.contact-card h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.contact-card p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.contact-btn {
    display: inline-block;
    background-color: white;
    color: var(--primary);
    padding: 12px 30px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.contact-btn:hover {
    background-color: var(--light);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

@media (max-width: 992px) {
    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .timeline-container::after {
        left: 31px;
    }
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    .timeline-right {
        left: 0%;
    }
    .timeline-left::after, .timeline-right::after {
        left: 21px;
    }
}

@media (max-width: 768px) {
    .company-intro {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .intro-image img {
        width: 100%;
        height: auto;
    }
    .values-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    .honor-card {
        padding: 18px 12px;
    }
    .map-container {
        width: 100%;
        max-width: 100%;
        aspect-ratio: 1000/600;
    }
    .china-map {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .factory-list {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .timeline-container::after {
        left: 20px;
    }
    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 15px;
    }
    .timeline-right {
        left: 0;
    }
    .timeline-item::after {
        left: 10px;
    }
}

@media (max-width: 576px) {
    .honors-grid {
        grid-template-columns: 1fr;
    }
}