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

:root {
    --primary-color: #00ffff;
    --secondary-color: #00cccc;
    --bg-color: #000000;
    --card-bg: #0a0a0a;
    --text-color: #ffffff;
    --text-secondary: #a0a0a0;
    --border-radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Animated starfield background */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: 
        radial-gradient(2px 2px at 20px 30px, var(--primary-color), transparent),
        radial-gradient(2px 2px at 60px 70px, var(--primary-color), transparent),
        radial-gradient(1px 1px at 50px 50px, var(--primary-color), transparent),
        radial-gradient(1px 1px at 130px 80px, var(--primary-color), transparent),
        radial-gradient(2px 2px at 90px 10px, var(--primary-color), transparent);
    background-size: 200px 200px;
    animation: animateStars 100s linear infinite;
    opacity: 0.3;
}

@keyframes animateStars {
    from { transform: translateY(0); }
    to { transform: translateY(-200px); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

/* Header */
header {
    text-align: center;
    padding: 60px 0 40px;
}

.logo h1 {
    font-size: 4.5rem;
    font-weight: 900;
    color: var(--primary-color);
    text-shadow: 0 0 30px rgba(0, 255, 255, 0.8),
                 0 0 60px rgba(0, 255, 255, 0.5);
    letter-spacing: 12px;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; text-shadow: 0 0 30px rgba(0, 255, 255, 0.8), 0 0 60px rgba(0, 255, 255, 0.5); }
    50% { opacity: 0.9; text-shadow: 0 0 40px rgba(0, 255, 255, 1), 0 0 80px rgba(0, 255, 255, 0.7); }
}

/* Glitch effect */
.glitch {
    position: relative;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.glitch::before {
    animation: glitch-1 3s infinite;
    color: var(--primary-color);
    z-index: -1;
}

.glitch::after {
    animation: glitch-2 3s infinite;
    color: #ff00ff;
    z-index: -2;
}

@keyframes glitch-1 {
    0%, 100% { transform: translate(0); opacity: 0; }
    2% { transform: translate(-3px, 3px); opacity: 0.8; }
    4% { transform: translate(0); opacity: 0; }
}

@keyframes glitch-2 {
    0%, 100% { transform: translate(0); opacity: 0; }
    2% { transform: translate(3px, -3px); opacity: 0.8; }
    4% { transform: translate(0); opacity: 0; }
}

/* Hero section */
.hero {
    text-align: center;
    padding: 20px 0 60px;
}

.subtitle {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 600;
}

.description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 60px;
    line-height: 1.8;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin: 60px 0;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.feature-card:hover::before {
    transform: translateX(100%);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 12px 40px rgba(0, 255, 255, 0.2);
    background: rgba(0, 255, 255, 0.02);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    color: var(--primary-color);
    filter: drop-shadow(0 0 12px rgba(0, 255, 255, 0.6));
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 12px;
    font-size: 1.35rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Buttons */
.buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 60px 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 36px;
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 2px solid;
}

.btn-icon {
    width: 22px;
    height: 22px;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-color);
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.4);
}

.btn-primary:hover {
    background: var(--secondary-color);
    box-shadow: 0 6px 30px rgba(0, 255, 255, 0.6);
    transform: translateY(-2px);
}

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

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(0, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 255, 255, 0.3);
    transform: translateY(-2px);
}

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

/* Info section */
.info {
    margin: 80px 0 60px;
}

.info-box {
    background: var(--card-bg);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: var(--border-radius);
    padding: 32px;
    margin-bottom: 50px;
    box-shadow: 0 4px 20px rgba(255, 107, 107, 0.1);
}

.info-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.warning-icon {
    width: 28px;
    height: 28px;
    color: #ff6b6b;
}

.info-box h3 {
    color: #ff6b6b;
    font-size: 1.4rem;
    font-weight: 600;
}

.info-box p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.98rem;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin: 50px 0;
}

.stat-item {
    background: var(--card-bg);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 36px 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 30px rgba(0, 255, 255, 0.2);
}

.stat-number {
    font-size: 3.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 500;
}

/* Footer */
footer {
    text-align: center;
    padding: 50px 0 30px;
    border-top: 1px solid rgba(0, 255, 255, 0.1);
    margin-top: 80px;
}

footer p {
    color: var(--text-secondary);
    margin: 8px 0;
    font-size: 0.95rem;
}

.footer-note {
    font-size: 0.85rem;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
    .logo h1 {
        font-size: 2.8rem;
        letter-spacing: 6px;
    }

    .subtitle {
        font-size: 1.6rem;
    }

    .description {
        font-size: 1rem;
    }

    .features {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .btn {
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
        justify-content: center;
    }

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}