/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #1f2937;
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    color: #1e3a8a;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: #6b7280;
    text-align: center;
    margin-bottom: 3rem;
}

.section-header {
    margin-bottom: 4rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    min-width: 140px;
}

.btn-primary {
    background-color: #1e3a8a;
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #fbbf24;
    color: #1f2937;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-secondary {
    background: transparent;
    color: #1e3a8a;
    border: 2px solid #1e3a8a;
}

.btn-secondary:hover {
    background-color: #1e3a8a;
    color: #ffffff;
}

/* Navigation */
.navbar {
    /*position: fixed;*/
    top: 0;
    left: 0;
    right: 0;
    background: rgba(30, 58, 138, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar.scrolled {
    background: #1e3a8a;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
}

.nav-logo i {
    margin-right: 8px;
    color: #fbbf24;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #fbbf24;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #fbbf24;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #ffffff;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/static/cigarette6/imgs/business_handshake_partnership_cooperation.jpg') center/cover no-repeat;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.8), rgba(30, 58, 138, 0.6));
    z-index: -1;
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    color: #ffffff;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* Services Section */
.services {
    padding: 80px 0;
    background: #f8fafc;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 24px rgba(30, 58, 138, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(30, 58, 138, 0.1);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px rgba(30, 58, 138, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: #ffffff;
}

.service-title {
    font-size: 1.5rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.service-description {
    color: #6b7280;
    line-height: 1.6;
}

/* Advantages Section */
.advantages {
    padding: 80px 0;
    background: #ffffff;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
}

.advantage-content {
    background: #f8fafc;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    height: 100%;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.advantage-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #1e3a8a, #fbbf24);
}

.advantage-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px rgba(30, 58, 138, 0.15);
}

.advantage-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
    color: #ffffff;
}

.advantage-title {
    font-size: 1.5rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.advantage-description {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.advantage-stats {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e3a8a;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: #6b7280;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* About Section */
.about {
    padding: 80px 0;
    background: #f8fafc;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 12px 32px rgba(30, 58, 138, 0.15);
}

.about-text .section-header {
    text-align: left;
    margin-bottom: 2rem;
}

.about-text .section-title {
    text-align: left;
}

.about-text .section-subtitle {
    text-align: left;
}

.about-description p {
    margin-bottom: 1.5rem;
    color: #6b7280;
    line-height: 1.7;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    color: #1f2937;
    font-weight: 500;
}

.feature-item i {
    color: #fbbf24;
    margin-right: 0.5rem;
}

/* Cases Section */
.cases {
    padding: 80px 0;
    background: #ffffff;
}

.cases-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.cases-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(30, 58, 138, 0.15);
}

.cases-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.cases-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.8), rgba(30, 58, 138, 0.6));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cases-image:hover .cases-overlay {
    opacity: 1;
}

.cases-info {
    text-align: center;
    color: #ffffff;
}

.cases-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.cases-grid {
    display: grid;
    gap: 2rem;
}

.case-item {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid #fbbf24;
    transition: all 0.3s ease;
}

.case-item:hover {
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(30, 58, 138, 0.08);
    transform: translateX(10px);
}

.case-icon {
    color: #1e3a8a;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.case-item h4 {
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.case-item p {
    color: #6b7280;
    font-size: 0.875rem;
}

/* News Section */
.news {
    padding: 80px 0;
    background: #f8fafc;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.news-card {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(30, 58, 138, 0.08);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px rgba(30, 58, 138, 0.15);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-content {
    padding: 1.5rem;
}

.news-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.news-date {
    color: #6b7280;
}

.news-category {
    color: #fbbf24;
    font-weight: 500;
}

.news-title {
    font-size: 1.25rem;
    color: #1f2937;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.news-excerpt {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.news-link {
    color: #1e3a8a;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: #fbbf24;
}

/* Testimonials Section */
.testimonials {
    padding: 80px 0;
    position: relative;
    color: #ffffff;
}

.testimonials-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/static/cigarette6/imgs/professional_business_meeting_conference_discussion.jpg') center/cover no-repeat;
    z-index: -2;
}

.testimonials-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.9), rgba(30, 58, 138, 0.8));
    z-index: -1;
}

.testimonials .section-title,
.testimonials .section-subtitle {
    color: #ffffff;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.testimonial-quote {
    font-size: 2rem;
    color: #fbbf24;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1.125rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    font-style: italic;
}

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

.author-info h4 {
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.author-info p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: #f8fafc;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-form h3,
.contact-info h3 {
    font-size: 1.5rem;
    color: #1f2937;
    margin-bottom: 2rem;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    background: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1e3a8a;
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #6b7280;
}

.form-group textarea + i {
    top: 1.5rem;
    transform: none;
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-details h4 {
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #6b7280;
    margin-bottom: 0.25rem;
}
/* Flink */
.flink-section {
    background: white;
    color: #2d3748;
    padding: 30px 0;
}
.flink-header{
    font-size: 20px;
    font-weight: 600;
    padding-bottom: 10px;
}
.flink-section li{
    list-style: none;
    display: inline;
    padding-right: 20px;
}
.flink-section a{
    color: #718096;
    text-decoration: none;
}
/* Footer */
.footer {
    background: #1e3a8a;
    color: #ffffff;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo i {
    margin-right: 8px;
    color: #fbbf24;
}

.footer-nav {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-nav a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: #fbbf24;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: #fbbf24;
    color: #1f2937;
}

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

.footer-bottom p {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: #1e3a8a;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #fbbf24;
    color: #1f2937;
    transform: translateY(-3px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-content,
    .contact-content,
    .cases-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .cases-content {
        grid-template-columns: 1fr;
    }
    
    .cases-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: #1e3a8a;
        flex-direction: column;
        padding: 2rem;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-nav {
        justify-content: center;
    }
    
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .service-card,
    .advantage-content,
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }
}

/* Animation classes for AOS */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

/* Custom animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll indicator animation */
.scroll-indicator {
    text-decoration: none;
    transition: color 0.3s ease;
}

.scroll-indicator:hover {
    color: #fbbf24;
}

/* Loading animation for stats */
.stat-number {
    counter-reset: counter;
    animation: countUp 2s ease-out forwards;
}

@keyframes countUp {
    from {
        counter-increment: counter 0;
    }
    to {
        counter-increment: counter var(--target, 100);
    }
}