* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #c8102e;
    --secondary-color: #1a1a2e;
    --accent-color: #f39c12;
    --text-dark: #333;
    --text-light: #666;
    --white: #fff;
    --light-gray: #f8f9fa;
    --dark-gray: #2c3e50;
    --gradient-primary: linear-gradient(135deg, #c8102e 0%, #8b0000 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.2);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

section {
    padding: 80px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.navbar {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    padding: 15px 0;
    transition: var(--transition);
    z-index: 1000;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-icon {
    font-size: 32px;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    padding: 10px 20px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-extra {
    display: flex;
    align-items: center;
    gap: 20px;
}

.phone-highlight {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 18px;
    text-decoration: none;
    padding: 8px 16px;
    background: rgba(200, 16, 46, 0.1);
    border-radius: 25px;
    transition: var(--transition);
}

.phone-highlight:hover {
    background: var(--primary-color);
    color: var(--white);
}

.nav-tools {
    display: flex;
    gap: 10px;
}

.lang-switch,
.search-btn {
    padding: 8px 16px;
    border: 1px solid var(--light-gray);
    background: var(--white);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.lang-switch:hover,
.search-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    color: var(--white);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.9) 0%, rgba(200, 16, 46, 0.7) 100%);
    z-index: -1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    text-align: center;
    padding: 0 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.btn {
    padding: 15px 40px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(200, 16, 46, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200, 16, 46, 0.6);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

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

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

.contact-float {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-icon {
    font-size: 24px;
}

.stats-section {
    background: var(--white);
    padding: 60px 0;
    margin-top: -60px;
    position: relative;
    z-index: 10;
}

.stat-card {
    text-align: center;
    padding: 30px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 18px;
    color: var(--text-light);
}

.about-section {
    background: var(--light-gray);
}

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

.section-title {
    font-size: 36px;
    font-weight: bold;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
}

.equipment-swiper {
    padding: 20px 0;
}

.equipment-card {
    text-align: center;
    padding: 40px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.equipment-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.equipment-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.equipment-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.equipment-card p {
    color: var(--text-light);
}

.team-card {
    text-align: center;
    padding: 30px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.team-avatar {
    font-size: 80px;
    margin-bottom: 15px;
}

.team-card h4 {
    font-size: 22px;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.team-role {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
}

.team-desc {
    color: var(--text-light);
    font-size: 14px;
}

.certifications {
    text-align: center;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.cert-item {
    padding: 20px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.cert-item:hover {
    background: var(--primary-color);
    color: var(--white);
}

.cases-section {
    background: var(--white);
}

.case-filters {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 25px;
    border: 2px solid var(--light-gray);
    background: var(--white);
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.case-thumbnail {
    position: relative;
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.case-card:hover .play-overlay {
    opacity: 1;
}

.play-btn {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    font-size: 24px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.play-btn:hover {
    transform: scale(1.1);
}

.case-info {
    padding: 20px;
}

.case-info h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.case-desc {
    color: var(--text-light);
    margin-bottom: 15px;
}

.case-tags {
    display: flex;
    gap: 10px;
}

.tag {
    padding: 5px 15px;
    background: rgba(200, 16, 46, 0.1);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 14px;
}

.services-section {
    background: var(--gradient-dark);
    color: var(--white);
}

.services-section .section-title {
    color: var(--white);
}

.services-section .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.process-flow {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: var(--transition);
    position: relative;
}

.process-step:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.step-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.step-content h4 {
    font-size: 20px;
    margin-bottom: 10px;
}

.step-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.step-arrow {
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    color: rgba(255, 255, 255, 0.5);
}

.testimonials-section {
    background: var(--light-gray);
}

.client-logos {
    margin-bottom: 50px;
}

.logo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.client-logo {
    padding: 30px;
    background: var(--white);
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.client-logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.testimonials-swiper {
    padding: 20px 0;
}

.testimonial-card {
    padding: 40px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
}

.testimonial-content {
    margin-bottom: 30px;
}

.testimonial-content p {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-dark);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    font-size: 50px;
}

.author-info h5 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.author-info p {
    color: var(--text-light);
    font-size: 14px;
}

.news-section {
    background: var(--white);
}

.news-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.news-thumbnail {
    height: 200px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.news-category {
    padding: 5px 15px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 15px;
    font-size: 12px;
}

.news-date {
    color: var(--text-light);
    font-size: 14px;
}

.news-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
    line-height: 1.4;
}

.news-excerpt {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--accent-color);
}

.contact-section {
    background: var(--light-gray);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
}

.form-title {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.form-label {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.form-control {
    padding: 12px 15px;
    border: 2px solid var(--light-gray);
    border-radius: 10px;
    font-size: 16px;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(200, 16, 46, 0.25);
}

.contact-info {
    padding: 20px;
}

.info-title {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.contact-item .contact-icon {
    font-size: 32px;
    min-width: 40px;
}

.contact-details h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.contact-details p {
    color: var(--text-light);
}

.qr-code {
    width: 150px;
    height: 150px;
    background: var(--light-gray);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    margin-top: 10px;
}

.map-container {
    margin-top: 30px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
}

.footer-title {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--white);
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

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

.footer-contact li {
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright,
.icp {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.floating-contact {
    position: fixed;
    right: 30px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-item {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    text-decoration: none;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.float-item:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.back-to-top {
    background: var(--dark-gray);
}

@media (max-width: 1199px) {
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .case-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 991px) {
    .nav-extra {
        display: none;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .process-flow {
        flex-direction: column;
    }
    
    .step-arrow {
        display: none;
    }
    
    .process-step {
        width: 100%;
    }
}

@media (max-width: 767px) {
    section {
        padding: 60px 0;
    }
    
    .hero-section {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .contact-float {
        flex-direction: column;
        gap: 15px;
    }
    
    .stats-section {
        margin-top: 0;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .stat-label {
        font-size: 14px;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .floating-contact {
        right: 15px;
        bottom: 15px;
    }
    
    .float-item {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
}

@media (max-width: 575px) {
    .container {
        padding: 0 10px;
    }
    
    .hero-title {
        font-size: 24px;
    }
    
    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .contact-form {
        padding: 25px;
    }
}

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

@media (min-width: 992px) and (max-width: 1199px) {
    .container {
        max-width: 960px;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .container {
        max-width: 720px;
    }
}

@media (max-width: 767px) {
    .container {
        max-width: 100%;
    }
}