/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Header */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: bold;
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--gray);
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.lang-switch {
    display: flex;
    gap: 5px;
    background: var(--gray-light);
    padding: 4px;
    border-radius: 8px;
}

.lang-switch button {
    padding: 6px 12px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 6px;
    font-weight: 500;
    color: var(--gray);
    transition: all 0.3s;
}

.lang-switch button.active {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 150px 0 100px;
    background: var(--gradient);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
}

.hero-btns {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 14px 32px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

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

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

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-graphic {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    background: rgba(255,255,255,0.1);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-graphic::before {
    content: '';
    position: absolute;
    width: 80%;
    height: 80%;
    border: 3px dashed rgba(255,255,255,0.3);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-icon {
    font-size: 8rem;
    color: var(--white);
}

/* Services Section */
.section {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--dark);
    margin-bottom: 15px;
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid var(--gray-light);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2.5rem;
    color: var(--white);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.service-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* About Section */
.about {
    background: var(--white);
}

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

.about-image {
    position: relative;
}

.about-img-main {
    width: 100%;
    height: 400px;
    background: var(--gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-img-main span {
    font-size: 6rem;
    color: var(--white);
}

.about-stats {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: var(--white);
    padding: 25px 35px;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    display: flex;
    gap: 30px;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    color: var(--gray);
    font-size: 0.9rem;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--dark);
}

.about-text p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark);
}

.feature-item::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--secondary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid var(--gray-light);
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.team-photo {
    width: 100%;
    height: 200px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--white);
}

.team-info {
    padding: 25px;
}

.team-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--dark);
}

.team-info p {
    color: var(--gray);
    font-size: 0.95rem;
}

.team-social {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}

.team-social a {
    width: 35px;
    height: 35px;
    background: var(--gray-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    transition: all 0.3s;
}

.team-social a:hover {
    background: var(--primary);
    color: var(--white);
}

/* Portfolio Section */
.portfolio {
    background: var(--white);
}

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

.portfolio-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--gradient);
}

.portfolio-item:nth-child(2) {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.portfolio-item:nth-child(3) {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.portfolio-item:nth-child(4) {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.portfolio-item:nth-child(5) {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.portfolio-item:nth-child(6) {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s;
    color: var(--white);
    padding: 20px;
    text-align: center;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.portfolio-overlay p {
    font-size: 0.95rem;
    opacity: 0.9;
}

.portfolio-icon {
    font-size: 4rem;
    color: rgba(255,255,255,0.3);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid var(--gray-light);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    font-size: 5rem;
    color: var(--primary);
    opacity: 0.2;
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: Georgia, serif;
}

.testimonial-text {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

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

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: bold;
}

.author-info h4 {
    color: var(--dark);
    font-size: 1rem;
}

.author-info p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--dark);
}

.contact-info > p {
    color: var(--gray);
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    flex-shrink: 0;
}

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

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

.contact-form {
    background: var(--light);
    padding: 40px;
    border-radius: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--gray-light);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.btn-submit {
    width: 100%;
    background: var(--gradient);
    color: var(--white);
    padding: 16px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

/* Map Section */
.map-section {
    padding: 0;
}

#map {
    width: 100%;
    height: 400px;
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-brand .logo-icon {
    background: var(--white);
    color: var(--primary);
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.7);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary);
}

/* Page Headers */
.page-header {
    padding: 150px 0 80px;
    background: var(--gradient);
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    font-size: 0.95rem;
}

.breadcrumb a {
    color: rgba(255,255,255,0.8);
}

.breadcrumb span {
    color: var(--white);
}

/* Legal Pages */
.legal-content {
    padding: 80px 0;
}

.legal-content .container {
    max-width: 900px;
}

.legal-content h2 {
    font-size: 1.8rem;
    color: var(--dark);
    margin: 40px 0 20px;
}

.legal-content h2:first-child {
    margin-top: 0;
}

.legal-content p {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 15px;
}

.legal-content ul {
    margin: 15px 0 15px 30px;
    list-style: disc;
}

.legal-content li {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 10px;
}

.legal-content a {
    color: var(--primary);
}

.legal-content a:hover {
    text-decoration: underline;
}

.last-updated {
    background: var(--light);
    padding: 15px 20px;
    border-radius: 10px;
    color: var(--gray);
    margin-bottom: 30px;
}

/* About Page */
.about-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 0;
}

.timeline {
    padding: 80px 0;
    background: var(--white);
}

.timeline-items {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-items::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: var(--gray-light);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 50px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-content {
    background: var(--white);
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    max-width: 350px;
    position: relative;
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    border: 4px solid var(--white);
    box-shadow: 0 0 0 3px var(--primary);
}

.timeline-year {
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 10px;
}

.timeline-content h3 {
    color: var(--dark);
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Services Page */
.services-detail {
    padding: 80px 0;
}

.service-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.service-detail-card:nth-child(even) {
    direction: rtl;
}

.service-detail-card:nth-child(even) > * {
    direction: ltr;
}

.service-detail-image {
    height: 350px;
    background: var(--gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--white);
}

.service-detail-card:nth-child(2) .service-detail-image {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.service-detail-card:nth-child(3) .service-detail-image {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.service-detail-card:nth-child(4) .service-detail-image {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.service-detail-content h3 {
    font-size: 1.8rem;
    color: var(--dark);
    margin-bottom: 20px;
}

.service-detail-content p {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark);
}

.service-features li::before {
    content: '✓';
    width: 22px;
    height: 22px;
    background: var(--secondary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: var(--gradient);
    text-align: center;
    color: var(--white);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid,
    .portfolio-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 20px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        transition: transform 0.3s;
    }
    
    .nav.active {
        transform: translateY(0);
    }
    
    .nav-links {
        flex-direction: column;
        text-align: center;
    }
    
    .hero .container,
    .about-content,
    .contact-wrapper,
    .about-hero,
    .service-detail-card,
    .service-detail-card:nth-child(even) {
        grid-template-columns: 1fr;
        direction: ltr;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .services-grid,
    .portfolio-grid,
    .testimonials-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
    }
    
    .about-stats {
        position: static;
        margin-top: 20px;
        justify-content: center;
    }
    
    .timeline-items::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-item::after {
        left: 20px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        flex-direction: column;
    }
}