* {
    font-family: 'Inter', sans-serif;
}

.hero-bg {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.security-hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1973&q=80');
    background-size: cover;
    background-position: center;
}

.system-card {
    transition: all 0.4s ease;
    overflow: hidden;
    position: relative;
}

.system-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
}

.system-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, #dc2626, #b91c1c);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.system-card:hover::before {
    transform: scaleX(1);
}

.btn-primary {
    background-color: #dc2626;
    color: white;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background-color: #b91c1c;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(220, 38, 38, 0.3);
}

.section-title {
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: #dc2626;
    transition: width 0.5s ease;
}

.section-title:hover::after {
    width: 100%;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

.feature-icon {
    background-color: #fef2f2;
    color: #dc2626;
    transition: all 0.3s ease;
}

.feature-icon:hover {
    background-color: #dc2626;
    color: white;
    transform: scale(1.1);
}

.package-card {
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.package-card:hover {
    border-color: #dc2626;
    transform: translateY(-10px);
}

.package-card.popular {
    border-color: #dc2626;
    transform: scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.sticky-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.brand-logo {
    height: 40px;
    max-width: 120px;
    object-fit: contain;
}

.floating {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0% { transform: translate(0, 0px); }
    50% { transform: translate(0, 15px); }
    100% { transform: translate(0, -0px); }
}

.brand-badge {
    background: linear-gradient(135deg, #8a1e1e, #f63b3b);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
    margin-left: 0.5rem;
}

.tech-specs {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-left: 4px solid #dc2626;
}

.benefit-card {
    transition: all 0.3s ease;
    border-left: 4px solid #dc2626;
}

.benefit-card:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.sensor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.sensor-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
}

.sensor-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.guarantee-badge {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.stats-counter {
    font-size: 3rem;
    font-weight: 700;
    color: #dc2626;
    display: block;
}

.to-hik-700 {
    --tw-gradient-to: #425077;
}

.from-hik-900 {
    --tw-gradient-from: #000000;
    --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, rgba(30, 58, 138, 0));
}

.to-ajax-700 {
    --tw-gradient-to: #ffffff;
}

.from-ajax-900 {
    --tw-gradient-from: #dadada;
    --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to, rgba(30, 58, 138, 0));
}