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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
    padding: 16px 0;
}

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

.navbar-brand {
    font-size: 24px;
    font-weight: 700;
    color: #0088cc;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

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

.nav-menu a:hover {
    color: #0088cc;
}

.nav-btn {
    background: #0088cc;
    color: #fff !important;
    padding: 8px 24px;
    border-radius: 6px;
    transition: background 0.3s;
}

.nav-btn:hover {
    background: #006699;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: #333;
    transition: all 0.3s;
}

.mobile-menu-open .mobile-menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-open .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-open .mobile-menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 160px 20px 100px;
    text-align: center;
    color: #fff;
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 24px;
    color: #fff;
}

.hero p {
    font-size: 24px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 40px;
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
}

/* CTA Button */
.btn {
    display: inline-block;
    background: #0088cc;
    color: #fff;
    padding: 18px 52px;
    font-size: 20px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 15px rgba(0,136,204,0.3);
}

.btn:hover {
    background: #006699;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,136,204,0.4);
}

.btn-white {
    background: #fff;
    color: #0088cc;
    box-shadow: 0 4px 15px rgba(255,255,255,0.3);
}

.btn-white:hover {
    background: #f8f9fa;
    color: #006699;
}

/* Features Section */
.features {
    padding: 100px 20px;
    background: #fff;
}

.section-title {
    text-align: center;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a1a1a;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 70px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    padding: 48px 36px;
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
    border-radius: 16px;
    text-align: left;
    transition: all 0.3s;
    border: 1px solid #eee;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    border-color: #0088cc;
}

.feature-icon {
    font-size: 52px;
    margin-bottom: 24px;
}

.feature-title {
    font-size: 26px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #1a1a1a;
}

.feature-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

/* Platforms Section */
.platforms {
    padding: 100px 20px;
    background: linear-gradient(to bottom, #f8f9fa, #fff);
    text-align: center;
}

.platforms h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a1a1a;
}

.platform-grid {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    max-width: 1000px;
    margin: 0 auto 50px;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 30px;
    background: #fff;
    border-radius: 16px;
    min-width: 170px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
    cursor: pointer;
}

.platform-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.platform-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.platform-name {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.platform-desc {
    font-size: 14px;
    color: #999;
}

/* Info Section */
.info {
    padding: 100px 20px;
    max-width: 900px;
    margin: 0 auto;
}

.info h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a1a1a;
    text-align: center;
}

.info-content {
    font-size: 18px;
    color: #555;
    line-height: 2;
    margin-bottom: 40px;
    text-align: center;
}

.info-list {
    list-style: none;
    margin-bottom: 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.info-list li {
    padding: 20px;
    font-size: 16px;
    color: #555;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #0088cc;
}

.info-list li:before {
    content: "✓";
    color: #0088cc;
    font-weight: bold;
    margin-right: 10px;
    font-size: 18px;
}

/* Security Section */
.security {
    padding: 100px 20px;
    background: linear-gradient(135deg, #0088cc 0%, #006699 100%);
    color: #fff;
}

.security h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #fff;
    text-align: center;
}

.security-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    align-items: center;
}

.security-text {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255,255,255,0.9);
}

.security-features {
    display: grid;
    gap: 20px;
}

.security-item {
    padding: 24px;
    background: rgba(255,255,255,0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.security-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #fff;
}

.security-item p {
    font-size: 15px;
    color: rgba(255,255,255,0.8);
}

/* FAQ Section */
.faq {
    padding: 100px 20px;
    background: #fff;
}

.faq h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a1a1a;
    text-align: center;
}

.faq-subtitle {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 60px;
}

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

.faq-item {
    margin-bottom: 20px;
    border: 1px solid #eee;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.faq-question {
    padding: 24px;
    background: #f8f9fa;
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    cursor: pointer;
    transition: background 0.3s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:hover {
    background: #e9ecef;
}

.faq-question::after {
    content: '+';
    font-size: 24px;
    font-weight: bold;
    color: #0088cc;
    transition: transform 0.3s;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    font-size: 16px;
    color: #555;
    line-height: 1.8;
    background: #fff;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 24px;
    max-height: 500px;
}

/* CTA Section */
.cta-section {
    padding: 100px 20px;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.cta-section h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #fff;
}

.cta-section p {
    font-size: 20px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Footer */
footer {
    background: #1a1a1a;
    color: #999;
    padding: 60px 20px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #0088cc;
}

footer p {
    margin-bottom: 10px;
}

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }

    .mobile-menu-open .nav-menu {
        display: flex;
    }

    .navbar-brand {
        font-size: 20px;
    }

    .hero {
        padding: 140px 20px 80px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 20px;
    }

    .stats {
        gap: 30px;
    }

    .stat-number {
        font-size: 36px;
    }

    .stat-label {
        font-size: 16px;
    }

    .section-title {
        font-size: 32px;
    }

    .section-subtitle {
        font-size: 16px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .platform-grid {
        gap: 16px;
    }

    .platform-item {
        min-width: 140px;
        padding: 30px 20px;
    }

    .info-list {
        grid-template-columns: 1fr;
    }

    .security-content {
        grid-template-columns: 1fr;
    }

    .cta-section h2 {
        font-size: 32px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }
}