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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: #333;
    line-height: 1.6;
}

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

.btn-primary {
    background: linear-gradient(135deg, #0066cc 0%, #00a8ff 100%);
    color: #fff;
    border: none;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #0066cc;
    border: 2px solid #0066cc;
    padding: 10px 25px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #0066cc;
    color: #fff;
}

.header-top {
    background: #f5f5f5;
    padding: 10px 0;
    font-size: 14px;
    color: #666;
}

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

.header-top-left span {
    margin-right: 20px;
}

.header-top-left i {
    margin-right: 5px;
    color: #0066cc;
}

.header-top-right span {
    margin-left: 15px;
    cursor: pointer;
}

.header-top-right span:hover {
    color: #0066cc;
}

.navbar {
    background: #fff;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    width: 50px;
    height: 50px;
    margin-right: 15px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-size: 20px;
    font-weight: 700;
    color: #333;
}

.logo-eng {
    font-size: 10px;
    color: #999;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: #0066cc;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.hero {
    position: relative;
    height: 600px;
    overflow: hidden;
}

.hero-swiper {
    width: 100%;
    height: 100%;
}

.hero-swiper .swiper-wrapper {
    height: 100%;
}

.hero-slide {
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.85) 0%, rgba(0, 168, 255, 0.5) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 80px;
    max-width: 650px;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
    line-height: 1.2;
}

.hero-content h2 {
    font-size: 56px;
    font-weight: 700;
    color: #ffdd57;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-content .btn-primary {
    background: rgba(255, 255, 255, 0.95);
    color: #0066cc;
}

.hero-content .btn-primary:hover {
    background: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.hero-swiper .swiper-button-prev,
.hero-swiper .swiper-button-next {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: #fff;
    transition: all 0.3s ease;
}

.hero-swiper .swiper-button-prev:hover,
.hero-swiper .swiper-button-next:hover {
    background: rgba(255, 255, 255, 0.4);
}

.hero-swiper .swiper-button-prev::after,
.hero-swiper .swiper-button-next::after {
    font-size: 20px;
    font-weight: 700;
}

.hero-swiper .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 1;
    transition: all 0.3s ease;
}

.hero-swiper .swiper-pagination-bullet-active {
    background: #fff;
    width: 30px;
    border-radius: 6px;
}

.hero-content .animate-text {
    opacity: 0;
}

.hero-slide.swiper-slide-active .animate-text {
    animation: flyInLeft 0.8s ease-out forwards;
}

.hero-slide.swiper-slide-active .animate-text:nth-child(1) {
    animation-delay: 0.2s;
}

.hero-slide.swiper-slide-active .animate-text:nth-child(2) {
    animation-delay: 0.4s;
}

.hero-slide.swiper-slide-active .animate-text:nth-child(3) {
    animation-delay: 0.6s;
}

.hero-slide.swiper-slide-active .animate-text:nth-child(4) {
    animation-delay: 0.8s;
}

@keyframes flyInLeft {
    0% {
        opacity: 0;
        transform: translateX(-100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-slide:not(.swiper-slide-active) .animate-text {
    animation: flyOutRight 0.5s ease-out forwards;
}

@keyframes flyOutRight {
    0% {
        opacity: 1;
        transform: translateX(0);
    }
    100% {
        opacity: 0;
        transform: translateX(100px);
    }
}

.about-section {
    padding: 80px 0;
}

.about-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.about-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
}

.about-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.about-card .card-content {
    padding: 25px;
}

.about-card .card-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.about-card .card-content p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-card.green .card-content h3,
.about-card.green .card-content a {
    color: #2d8a4e;
}

.about-card.green {
    border-top: 4px solid #2d8a4e;
}

.read-more {
    display: inline-flex;
    align-items: center;
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
}

.read-more:hover {
    padding-left: 10px;
}

.features {
    padding: 50px 0;
    background: #f8f9fa;
}

.features .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-item i {
    font-size: 40px;
    color: #0066cc;
    margin-bottom: 15px;
}

.feature-item span {
    font-size: 16px;
    font-weight: 500;
    color: #333;
}

.social-responsibility {
    padding: 80px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: #333;
}

.section-header p {
    font-size: 16px;
    color: #666;
    margin-top: 10px;
}

.sr-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.sr-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
}

.sr-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.sr-item:hover img {
    transform: scale(1.1);
}

.sr-item span {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    color: #fff;
    padding: 30px 20px 15px;
    font-size: 18px;
    font-weight: 600;
}

.stats {
    position: relative;
    padding: 80px 0;
    overflow: hidden;
}

.stats-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: -1;
}

.stats-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stats .container {
    position: relative;
    z-index: 2;
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.stat-num {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: #0066cc;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: #666;
    font-weight: 500;
}

.advantages {
    padding: 80px 0;
}

.advantages-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.adv-item {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease, background 0.3s ease;
}

.adv-item:hover {
    transform: translateY(-5px);
    background: #fff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.adv-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #0066cc 0%, #00a8ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
}

.adv-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.adv-item p {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
}

.adv-video {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
}

.adv-video img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #0066cc;
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
    background: #fff;
}

.news {
    padding: 80px 0;
    background: #f8f9fa;
}

.news-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.news-main {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.news-main img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.news-main:hover img {
    transform: scale(1.1);
}

.news-main h3 {
    padding: 25px 25px 15px;
    font-size: 20px;
    font-weight: 600;
    color: #333;
}

.news-main p {
    padding: 0 25px 25px;
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.news-item {
    display: flex;
    align-items: center;
    padding: 20px;
    background: #fff;
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.news-item:hover {
    background: #f0f7ff;
    transform: translateX(10px);
}

.news-date {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0066cc 0%, #00a8ff 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    margin-right: 20px;
    flex-shrink: 0;
}

.news-title {
    font-size: 15px;
    color: #333;
    font-weight: 500;
    line-height: 1.6;
}

.links {
    padding: 80px 0;
}

.links-viewport {
    overflow: hidden;
    width: 100%;
}

.links-grid {
    display: flex;
    gap: 30px;
    transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    will-change: transform;
}

.link-item {
    flex: 0 0 calc((100% - 120px) / 5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.link-item:hover {
    background: #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.link-item img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.links-nav {
    display: flex;
    justify-content: center;
    margin-top: 30px;
    gap: 15px;
}

.nav-btn {
    width: 50px;
    height: 50px;
    border: 2px solid #ddd;
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #666;
    position: relative;
    overflow: hidden;
}

.nav-btn i {
    transition: transform 0.3s ease;
}

.nav-btn:hover {
    background: #0066cc;
    color: #fff;
    border-color: #0066cc;
    box-shadow: 0 8px 20px rgba(0, 102, 204, 0.35);
}

#linksPrev:hover i {
    transform: translateX(-4px);
}

#linksNext:hover i {
    transform: translateX(4px);
}

.nav-btn:active {
    transform: scale(0.92);
}

.nav-btn.nav-click-left {
    animation: btnShakeLeft 0.4s ease;
}

.nav-btn.nav-click-right {
    animation: btnShakeRight 0.4s ease;
}

@keyframes btnShakeLeft {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    50% { transform: translateX(3px); }
    75% { transform: translateX(-2px); }
}

@keyframes btnShakeRight {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(6px); }
    50% { transform: translateX(-3px); }
    75% { transform: translateX(2px); }
}

.join-us {
    padding: 80px 0;
    background: linear-gradient(135deg, #0066cc 0%, #00a8ff 100%);
}

.join-us .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.join-content {
    color: #fff;
}

.join-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
}

.join-content p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.join-content .btn-primary {
    background: #fff;
    color: #0066cc;
}

.join-content .btn-primary:hover {
    background: #f0f0f0;
}

.join-image {
    overflow: hidden;
    border-radius: 15px;
}

.join-image img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.6s ease;
}

.join-image:hover img {
    transform: scale(1.1);
}

.contact-bar {
    padding: 40px 0;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.contact-bar .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.contact-item i {
    font-size: 28px;
    color: #0066cc;
    flex-shrink: 0;
}

.contact-label {
    display: block;
    font-size: 14px;
    color: #999;
    margin-bottom: 5px;
}

.contact-value {
    font-size: 16px;
    font-weight: 500;
    color: #333;
}

.social-icons {
    display: flex;
    gap: 10px;
}

.social-icons i {
    width: 36px;
    height: 36px;
    background: #f0f7ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.social-icons i:hover {
    background: #0066cc;
    color: #fff;
}

.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    grid-column: span 2;
}

.footer-brand img {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
}

.footer-brand .logo-text {
    margin-bottom: 20px;
}

.footer-brand .logo-name {
    color: #fff;
    font-size: 22px;
}

.footer-brand .logo-eng {
    color: #999;
}

.footer-brand p {
    font-size: 14px;
    color: #999;
    line-height: 1.8;
    max-width: 250px;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

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

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    text-decoration: none;
    color: #999;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: #00a8ff;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: #666;
    font-size: 14px;
}

@media (max-width: 1024px) {
    .about-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sr-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features .container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .links-grid {
        gap: 20px;
    }

    .link-item {
        flex: 0 0 calc((100% - 80px) / 5);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-brand {
        grid-column: span 3;
    }
}

@media (max-width: 768px) {
    .header-top {
        display: none;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        margin: 10px 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero {
        height: 450px;
    }

    .hero-content {
        padding: 0 30px;
    }

    .hero-content h1,
    .hero-content h2 {
        font-size: 36px;
    }
    
    .about-cards,
    .sr-grid,
    .features .container,
    .stats .container,
    .advantages-content,
    .news-content,
    .join-us .container,
    .contact-bar .container {
        grid-template-columns: 1fr;
    }
    
    .links-grid {
        gap: 15px;
    }

    .link-item {
        flex: 0 0 calc((100% - 15px) / 2);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-brand {
        grid-column: span 2;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}