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

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

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

.header {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav {
    padding: 1rem 0;
}

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

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #FF6699;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-image {
    height: 40px;
    width: auto;
}

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

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

.nav-menu a:hover {
    color: #FF6699;
}

.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #FFB6C1 0%, #FF6699 100%);
    color: #fff;
}

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

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: #fff;
    color: #FF6699;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    margin-left: 1rem;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
}

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

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.testimonials {
    padding: 80px 0;
}

.testimonials h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #333;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid #FF6699;
}

.testimonial-card p {
    font-style: italic;
    margin-bottom: 1.5rem;
    color: #666;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.testimonial-author span:first-child {
    font-weight: 600;
    color: #333;
}

.author-title {
    color: #666;
    font-size: 0.9rem;
}

.footer {
    background: #333;
    color: #fff;
    padding: 50px 0 20px;
}

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

@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #FF6699;
}

.qq-group {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #444;
}

.qq-group p {
    color: #ccc;
    margin-bottom: 0.5rem;
}

.qq-group strong {
    color: #FF6699;
}

.contact-info {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.contact-info {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.contact-info p {
    color: #ccc;
    font-size: 0.9rem;
    line-height: 1.4;
    margin: 0;
    padding: 0;
}

.contact-info strong {
    color: #FF6699;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #fff;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #FF6699;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    color: #ccc;
}

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

.footer-bottom a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: #FF6699;
}

.about-hero {
    padding: 120px 0 40px;
    background: linear-gradient(135deg, #FFB6C1 0%, #FF6699 100%);
    color: #fff;
    text-align: center;
}

.about-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.about-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

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

.about-content .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #333;
}

.about-text p {
    margin-bottom: 2rem;
    line-height: 1.8;
    color: #666;
}

.about-text ul {
    list-style: none;
}

.about-text li {
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
    color: #666;
}

.about-text li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #FF6699;
    font-weight: bold;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

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

.timeline h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #333;
}

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

.timeline-item {
    display: flex;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:before {
    content: '';
    position: absolute;
    left: 50px;
    top: 0;
    bottom: -3rem;
    width: 2px;
    background: #FF6699;
}

.timeline-item:last-child:before {
    display: none;
}

.timeline-date {
    width: 100px;
    font-weight: 600;
    color: #FF6699;
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
    padding-left: 2rem;
}

.timeline-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

.features-hero {
    padding: 120px 0 40px;
    background: linear-gradient(135deg, #FFB6C1 0%, #FF6699 100%);
    color: #fff;
    text-align: center;
}

.features-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.features-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.features-details {
    padding: 80px 0;
}

.feature-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.feature-detail.reverse {
    grid-template-columns: 1fr 1fr;
}

.feature-detail.reverse .feature-detail-image {
    order: 2;
}

.feature-detail.reverse .feature-detail-content {
    order: 1;
}

.feature-detail-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-detail-content h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #333;
}

.feature-detail-content p {
    margin-bottom: 2rem;
    line-height: 1.8;
    color: #666;
}

.feature-detail-content ul {
    list-style: none;
}

.feature-detail-content li {
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
    color: #666;
}

.feature-detail-content li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #FF6699;
    font-weight: bold;
}

.feature-highlights {
    padding: 80px 0;
    background: #f8f9fa;
}

.feature-highlights h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #333;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.download-hero {
    padding: 120px 0 40px;
    background: linear-gradient(135deg, #FFB6C1 0%, #FF6699 100%);
    color: #fff;
    text-align: center;
}

.download-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.download-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.download-main {
    padding: 80px 0;
}

.download-info {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
}

.version-info h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #333;
}

.version-info p {
    margin-bottom: 1rem;
    color: #666;
}

.version-info .version,
.version-info .date {
    font-weight: 600;
    color: #FF6699;
}

.version-info ul {
    list-style: none;
    padding-left: 0;
}

.version-info li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    color: #666;
}

.version-info li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #FF6699;
}

.download-platforms,
.download-mobile,
.download-guide,
.download-faq {
    margin-bottom: 3rem;
}

.download-platforms h2,
.download-mobile h2,
.download-guide h2,
.download-faq h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #333;
    text-align: center;
}

.platform-grid,
.mobile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.platform-card,
.mobile-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

.platform-card:hover,
.mobile-card:hover {
    transform: translateY(-5px);
}

.platform-icon,
.mobile-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.platform-card h3,
.mobile-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.platform-card p,
.mobile-card p {
    margin-bottom: 1.5rem;
    color: #666;
}

.file-info {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #999;
}

.coming-soon {
    font-size: 1.5rem;
    font-weight: bold;
    color: #FF6699;
}

.app-store-badge {
    margin-top: 1rem;
}

.guide-steps {
    max-width: 800px;
    margin: 0 auto;
}

.guide-step {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.step-number {
    width: 40px;
    height: 40px;
    background: #FF6699;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-right: 1.5rem;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.step-content p {
    color: #666;
}

.faq-items {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.faq-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.faq-item p {
    color: #666;
    line-height: 1.6;
}

.contact-hero {
    padding: 120px 0 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
}

.contact-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.contact-main {
    padding: 80px 0;
}

.contact-main .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.contact-form-section,
.contact-info-section {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-form-section h2,
.contact-info-section h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #333;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group textarea {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #FF6699;
}

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

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

.info-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    color: #FF6699;
}

.info-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.info-content p {
    color: #666;
    line-height: 1.6;
}

.social-links {
    margin-top: 2rem;
}

.social-links h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

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

.social-icon {
    width: 40px;
    height: 40px;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    text-decoration: none;
    color: #FF6699;
    transition: all 0.3s;
}

.social-icon:hover {
    background: #FF6699;
    color: #fff;
    transform: translateY(-2px);
}

.support-options {
    padding: 80px 0;
    background: #f8f9fa;
}

.support-options h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #333;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.support-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

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

.support-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #FF6699;
}

.support-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.support-card p {
    margin-bottom: 1.5rem;
    color: #666;
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-image {
        order: -1;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        padding: 1rem 20px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-image {
        order: -1;
    }
    
    .timeline-item {
        flex-direction: column;
    }
    
    .timeline-date {
        width: auto;
        margin-bottom: 0.5rem;
    }
    
    .timeline-content {
        padding-left: 0;
    }
    
    .timeline-item:before {
        left: 0;
    }
    
    .feature-detail,
    .feature-detail.reverse {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-detail.reverse .feature-detail-image,
    .feature-detail.reverse .feature-detail-content {
        order: initial;
    }
    
    .platform-grid,
    .mobile-grid {
        grid-template-columns: 1fr;
    }
    
    .guide-step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .contact-main .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .support-grid {
        grid-template-columns: 1fr;
    }
}