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

:root {
    --primary-dark: #0a0e17;
    --primary-gradient: linear-gradient(135deg, #1a1f2e 0%, #0d1117 100%);
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(30, 41, 59, 0.5);
    --glow-blue: rgba(59, 130, 246, 0.3);
    --glow-cyan: rgba(6, 182, 212, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--primary-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.logo-icon {
    font-size: 28px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(90deg, var(--text-primary), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--text-primary);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-buttons {
    display: flex;
    gap: 16px;
}

.btn-login {
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-login:hover {
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
}

.btn-register {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--glow-cyan);
}

.hero-section {
    min-height: 100vh;
    padding-top: 70px;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--primary-dark);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--glow-blue) 0%, transparent 70%);
    pointer-events: none;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--glow-cyan) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    margin-bottom: 24px;
}

.title-line {
    display: block;
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
}

.title-line.highlight {
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-bottom: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.btn-primary {
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px var(--glow-cyan);
}

.btn-secondary {
    padding: 16px 40px;
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
}

.hero-visual {
    position: relative;
    height: 500px;
}

.visual-card {
    position: absolute;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px 32px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.4s ease;
}

.visual-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-cyan);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-1 {
    top: 50px;
    left: 0;
    animation: float1 6s ease-in-out infinite;
}

.card-2 {
    top: 200px;
    right: 0;
    animation: float2 7s ease-in-out infinite;
}

.card-3 {
    bottom: 80px;
    left: 50px;
    animation: float3 8s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

@keyframes float3 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-25px); }
}

.card-icon {
    font-size: 32px;
}

.card-text {
    font-size: 18px;
    font-weight: 600;
}

.visual-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 350px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    opacity: 0.3;
}

.visual-circle::before {
    content: '';
    position: absolute;
    top: -30px;
    left: -30px;
    right: -30px;
    bottom: -30px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    opacity: 0.5;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

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

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(90deg, var(--text-primary), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.features-section {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--primary-dark) 0%, #0d1420 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-cyan);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon-wrap {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(59, 130, 246, 0.2));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon {
    font-size: 36px;
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.products-section {
    padding: 120px 0;
    background: var(--primary-dark);
}

.products-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.product-item {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    transition: all 0.4s ease;
}

.product-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-purple);
    box-shadow: 0 20px 40px rgba(139, 92, 246, 0.15);
}

.product-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.product-icon {
    font-size: 36px;
}

.product-name {
    font-size: 24px;
    font-weight: 600;
}

.product-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.product-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.product-features li {
    padding: 8px 16px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 20px;
    font-size: 13px;
    color: var(--accent-purple);
}

.security-section {
    padding: 120px 0;
    background: linear-gradient(180deg, #0d1420 0%, var(--primary-dark) 100%);
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.security-text .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.security-intro {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.security-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.security-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.security-item:hover {
    border-color: var(--accent-green);
    transform: translateX(10px);
}

.security-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.security-info h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.security-info p {
    font-size: 14px;
    color: var(--text-secondary);
}

.security-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.shield-outer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    border: 2px solid rgba(16, 185, 129, 0.2);
    animation: pulse 3s ease-in-out infinite;
}

.shield-middle {
    position: absolute;
    top: 30px;
    left: 30px;
    right: 30px;
    bottom: 30px;
    border-radius: 50%;
    border: 2px solid rgba(16, 185, 129, 0.3);
    animation: pulse 3s ease-in-out infinite 0.5s;
}

.shield-inner {
    position: absolute;
    top: 60px;
    left: 60px;
    right: 60px;
    bottom: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(6, 182, 212, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 3s ease-in-out infinite 1s;
}

.shield-icon {
    font-size: 60px;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.7; }
}

.about-section {
    padding: 120px 0;
    background: var(--primary-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.about-paragraph {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.value-item {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
}

.value-item:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-5px);
}

.value-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--accent-cyan);
}

.value-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #0d1420 0%, #1a1f2e 50%, #0d1420 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, var(--glow-blue) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(90deg, var(--text-primary), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

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

.btn-cta-primary {
    padding: 18px 50px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    border: none;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px var(--glow-cyan);
}

.btn-cta-secondary {
    padding: 18px 50px;
    background: transparent;
    border: 2px solid var(--accent-cyan);
    color: var(--accent-cyan);
    font-size: 18px;
    font-weight: 600;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cta-secondary:hover {
    background: rgba(6, 182, 212, 0.1);
}

.main-footer {
    background: #050810;
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-slogan {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.social-link:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.copyright {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.disclaimer {
    font-size: 12px;
    color: var(--text-muted);
    opacity: 0.7;
}

@media (max-width: 1200px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .security-content {
        grid-template-columns: 1fr;
    }
    
    .security-visual {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .title-line {
        font-size: 36px;
    }
    
    .features-grid,
    .products-tabs {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}