:root {
    --primary-color: #00f0ff;
    --secondary-color: #7000ff;
    --bg-dark: #0a0a0f;
    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 10s infinite alternate ease-in-out;
}

.glow-1 {
    width: 400px;
    height: 400px;
    background: var(--secondary-color);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.glow-2 {
    width: 500px;
    height: 500px;
    background: var(--primary-color);
    bottom: -150px;
    right: -150px;
    animation-delay: -5s;
}

.glow-3 {
    width: 300px;
    height: 300px;
    background: #0055ff;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.2;
    animation: pulse 8s infinite alternate ease-in-out;
}

@keyframes float {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(-20px) scale(1.1); }
}

@keyframes pulse {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.2; }
    100% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.3; }
}

.header {
    position: absolute;
    top: 30px;
    left: 40px;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    z-index: 10;
}

.container {
    text-align: center;
    max-width: 800px;
    padding: 20px;
    z-index: 1;
}

.main-title {
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 0%, #a0a0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
    letter-spacing: -1px;
    animation: fadeInUp 1s ease-out;
}

.product-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.3s backwards;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.3);
}

.description {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.cta-text {
    font-size: 1rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.qq-box {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--primary-color);
    border-radius: 50px;
    padding: 5px 5px 5px 25px;
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
    transition: box-shadow 0.3s ease;
}

.qq-box:hover {
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
}

.qq-number {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-right: 20px;
    letter-spacing: 1px;
}

.copy-btn {
    background: var(--primary-color);
    color: var(--bg-dark);
    border: none;
    padding: 12px 24px;
    border-radius: 40px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn:hover {
    background: #fff;
    transform: scale(1.05);
}

.copy-btn:active {
    transform: scale(0.95);
}

.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(0, 240, 255, 0.9);
    color: var(--bg-dark);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    z-index: 100;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .main-title {
        font-size: 2.5rem;
    }
    
    .product-card {
        padding: 2rem;
    }
    
    .qq-box {
        flex-direction: column;
        padding: 20px;
        border-radius: 16px;
        gap: 15px;
    }
    
    .qq-number {
        margin-right: 0;
        font-size: 1.8rem;
    }
    
    .copy-btn {
        width: 100%;
        justify-content: center;
    }

    .header {
        left: 20px;
        top: 20px;
        font-size: 1.2rem;
    }
}