:root {
    --color-bg-primary: #121212;
    --color-bg-secondary: #1a1a1a;
    --color-bg-tertiary: #242424;
    --color-bg-card: #1e1e1e;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b3b3b3;
    --color-text-muted: #808080;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-accent-light: #60a5fa;
    --color-border: #333333;
    --color-border-hover: #3b82f6;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-hero: 3rem;
    --font-size-h1: 2.5rem;
    --font-size-h2: 2rem;
    --font-size-h3: 1.5rem;
    --font-size-body: 1rem;
    --font-size-small: 0.875rem;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 12px 32px rgba(59, 130, 246, 0.2);
    --header-height: 70px;
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

a {
    color: var(--color-accent-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all var(--transition-normal);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background-color: rgba(18, 18, 18, 0.98);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.company-name {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    letter-spacing: 0.5px;
}

.company-name:hover {
    color: var(--color-accent-light);
}

.navigation {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    position: relative;
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-primary);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-normal);
    transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

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

.hero-content {
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
    animation-delay: 0.3s;
}

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

.hero-title {
    font-size: var(--font-size-hero);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: var(--font-size-h3);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: var(--font-size-body);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    color: var(--color-text-primary);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
    color: var(--color-text-primary);
}

.btn-primary:active {
    transform: translateY(0);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-muted);
    animation: bounce 2s infinite;
}

.scroll-text {
    font-size: var(--font-size-small);
}

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

.section-title {
    font-size: var(--font-size-h2);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.section-subtitle {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.products {
    padding: var(--spacing-2xl) 0;
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    background-color: var(--color-bg-secondary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.product-card {
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.product-card:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-border-hover);
}

.product-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.product-link:hover {
    color: inherit;
}

.product-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 75%;
    overflow: hidden;
    background-color: var(--color-bg-tertiary);
}

.product-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.product-image.loaded {
    opacity: 1;
}

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

.product-info {
    padding: var(--spacing-md);
}

.product-title {
    font-size: var(--font-size-h3);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.product-link:hover .product-title {
    color: var(--color-accent-light);
}

.product-description {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.about {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-primary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    text-align: center;
}

.about-text p {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-accent-light);
    font-weight: 500;
}

.feature-item i {
    font-size: 1.25rem;
}

.contact {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-secondary);
}

.contact-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.contact-info {
    text-align: center;
}

.contact-info p {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.contact-email {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-h3);
    color: var(--color-accent-light);
    font-weight: 500;
}

.contact-email:hover {
    color: var(--color-accent-hover);
}

.contact-qrcode {
    text-align: center;
}

.qrcode-image {
    width: 160px;
    height: 160px;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    background-color: var(--color-bg-card);
    padding: var(--spacing-xs);
    border: 1px solid var(--color-border);
}

.qrcode-text {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
}

.footer {
    background-color: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.footer-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-title {
    font-size: var(--font-size-h3);
    font-weight: 600;
    color: var(--color-text-primary);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-email {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: var(--font-size-body);
}

.footer-email:hover {
    color: var(--color-accent-light);
}

.footer-qrcode {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-qrcode-image {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-bg-card);
    padding: var(--spacing-xs);
    border: 1px solid var(--color-border);
}

.footer-qrcode-text {
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
}

.footer-legal {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.legal-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.icp-link,
.police-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.icp-link:hover,
.police-link:hover {
    color: var(--color-accent-light);
}

.police-link {
    display: inline-flex;
    align-items: center;
}

.police-icon {
    width: 16px;
    height: 16px;
    object-fit: contain;
}

.copyright {
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
    text-align: center;
}

@media (max-width: 1024px) {
    :root {
        --font-size-hero: 2.5rem;
        --font-size-h1: 2rem;
        --font-size-h2: 1.8rem;
        --font-size-h3: 1.3rem;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-hero: 2rem;
        --font-size-h1: 1.75rem;
        --font-size-h2: 1.5rem;
        --font-size-h3: 1.2rem;
        --header-height: 60px;
    }

    .company-name {
        font-size: 0.9rem;
        max-width: 180px;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .navigation {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-bg-secondary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .navigation.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .nav-link {
        font-size: var(--font-size-h3);
    }

    .hero-subtitle {
        font-size: var(--font-size-body);
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .about-features {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .contact-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .footer-legal {
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-hero: 1.75rem;
        --font-size-h1: 1.5rem;
        --font-size-h2: 1.3rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .company-name {
        font-size: 0.8rem;
        max-width: 150px;
    }

    .hero-title {
        padding: 0 var(--spacing-sm);
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}