/* CSS Variables */
:root {
    --primary-color: #1e3c8c;
    --secondary-color: #3a86ff;
    --dark-bg: #0a1931;
    --light-bg: #f8f9fa;
    --text-light: #ffffff;
    --text-gray: #6c757d;
    --text-dark: #333333;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    line-height: 1.6;
    color: var(--text-dark);
}

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

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

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

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.section-padding {
    padding: 6rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

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

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

/* Header Styles */
.main-header {
    background-color: transparent;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 48px;
    max-width: 270px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-list a:hover,
.nav-list .active a {
    color: var(--secondary-color);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-selector {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
}

.search-toggle, 
.mobile-menu-toggle {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
}

.mobile-menu-toggle {
    display: none;
}

/* WhatsApp Float Button */
.whatsapp-float {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s;
}

.whatsapp-float:hover {
    background-color: #1da851;
    transform: translateY(-50%) scale(1.1);
}

/* 首页特定样式 */
.home-hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
    color: var(--text-light);
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.4) 100%);
    z-index: 0;
}

.home-hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 15px;
}

.home-hero-content h1 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.home-hero-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    max-width: 700px;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

/* 产品展示区 */
.featured-products {
    padding: 6rem 0;
}

.product-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.product-card {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.product-image {
    height: 240px;
    position: relative;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-image .product-tag {
    position: absolute;
    top: 20px;
    left: 0;
    background-color: var(--primary-color);
    color: white;
    padding: 5px 15px;
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
}

.product-content {
    padding: 1.5rem;
}

.product-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.product-specs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-gray);
    font-size: 0.9rem;
}

.product-specs span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.product-specs i {
    color: var(--primary-color);
}

.product-content p {
    margin-bottom: 1.5rem;
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* 特色产品 */
.hero-product {
    padding: 6rem 0;
    background-color: var(--dark-bg);
    color: var(--text-light);
}

.hero-product-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-product-image {
    position: relative;
}

.hero-product-image img {
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    width: 100%;
    height: auto;
}

.hero-product-text h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.hero-product-features {
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    flex-shrink: 0;
}

.feature-icon i {
    color: var(--secondary-color);
    font-size: 1.5rem;
}

/* 公司优势 */
.company-advantages {
    padding: 6rem 0;
    background-color: var(--light-bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.advantage-card {
    background-color: white;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(58, 134, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.advantage-icon i {
    color: var(--primary-color);
    font-size: 2rem;
}

.advantage-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.advantage-card p {
    color: var(--text-gray);
}

/* 客户见证 */
.testimonials {
    padding: 6rem 0;
    background-color: var(--primary-color);
    color: var(--text-light);
    position: relative;
}

.testimonials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('assets/images/pattern-bg.png');
    opacity: 0.05;
    background-size: cover;
}

.testimonial-slider {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.testimonial-item {
    padding: 0 1.5rem;
}

.testimonial-content {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 2.5rem;
    position: relative;
}

.testimonial-content::before {
    content: '\201C';
    font-size: 6rem;
    font-family: Georgia, serif;
    color: rgba(255, 255, 255, 0.1);
    position: absolute;
    top: 10px;
    left: 20px;
    line-height: 1;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    font-style: italic;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-image {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 1rem;
}

.author-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.author-info p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* 联系区 */
.contact-section {
    padding: 6rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.contact-methods {
    margin-top: 2rem;
}

.contact-method {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(58, 134, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    flex-shrink: 0;
}

.contact-icon i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.contact-form {
    background-color: white;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.1);
}

.contact-form h3 {
    text-align: center;
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Footer Styles */
.compact-footer {
    background-color: var(--dark-bg);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-brand {
    text-align: center;
    margin: 0 auto;
    max-width: 500px;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.footer-logo img {
    max-width: 270px;
    height: 48px;
    filter: brightness(0) invert(1);
}

.footer-about {
    line-height: 1.6;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
    color: #fff;
    text-decoration: none;
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background: var(--secondary-color);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: #eaeaea;
    text-decoration: none;
    transition: all 0.3s ease;
    opacity: 0.8;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

.contact-info p {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
    line-height: 1.5;
    opacity: 0.8;
}

.contact-info i {
    margin-right: 10px;
    color: var(--secondary-color);
    min-width: 16px;
    margin-top: 2px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 992px) {
    .home-hero-content h1 {
        font-size: 3rem;
    }
    
    .hero-product-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .product-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .home-hero-content h1 {
        font-size: 2.5rem;
    }
    
    .home-hero-content p {
        font-size: 1.2rem;
    }
    
    .hero-btns {
        flex-direction: column;
        gap: 1rem;
    }
    
    .product-cards {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-columns {
        grid-template-columns: 1fr;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
}