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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.main-card {
    background:
        radial-gradient(circle at 20% 20%, rgba(120, 119, 198, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 119, 198, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 226, 0.02) 0%, transparent 50%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.97) 0%, rgba(255, 255, 255, 0.93) 100%);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 60px 50px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.12);
    max-width: 1100px;
    width: 100%;
    text-align: center;
    animation: cardFadeIn 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.main-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.05) 50%, transparent 70%);
    animation: shimmer 4s ease-in-out infinite;
    pointer-events: none;
}

.logo {
    width: 220px;
    height: auto;
    margin: 0 auto 30px;
    display: block;
    animation: logoFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.1));
}

.company-title {
    font-size: 2.8rem;
    font-weight: 300;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    letter-spacing: 3px;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.3rem;
    color: #6c7b7f;
    margin-bottom: 50px;
    font-weight: 300;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin: 50px 0;
}

.feature-card {
    padding: 30px 20px;
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-1 { background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%); }
.feature-2 { background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); }
.feature-3 { background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%); }
.feature-4 { background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%); }

.feature-icon {
    width: 2.5rem;
    height: 2.5rem;
    margin: 0 auto 15px;
    display: block;
    animation: iconPulse 2.5s ease-in-out infinite;
}

.feature-1 .feature-icon {
    filter: invert(0.3) sepia(1) saturate(2) hue-rotate(320deg) brightness(1.2);
}

.feature-2 .feature-icon {
    filter: invert(0.4) sepia(1) saturate(1.5) hue-rotate(160deg) brightness(1.1);
}

.feature-3 .feature-icon {
    filter: invert(0.3) sepia(1) saturate(1.8) hue-rotate(25deg) brightness(1.1);
}

.feature-4 .feature-icon {
    filter: invert(0.4) sepia(1) saturate(1.2) hue-rotate(280deg) brightness(1.2);
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: #2c3e50;
    line-height: 1.4;
    word-wrap: break-word;
    hyphens: auto;
}

.contact-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px;
    border-radius: 20px;
    margin-top: 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.contact-info {
    flex: 1;
    text-align: left;
}

.contact-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.contact-details {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.95;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-left: 40px;
}

.qr-code {
    width: 160px;
    height: 160px;
    background: white;
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.qr-code:hover {
    transform: scale(1.05);
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.footer {
    margin-top: 30px;
    font-size: 0.85rem;
    color: rgba(108, 123, 127, 0.7);
}

.footer a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #764ba2;
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@media (max-width: 768px) {
    .main-card {
        padding: 40px 30px;
        margin: 10px;
    }
    
    .logo {
        width: 180px;
    }
    
    .company-title {
        font-size: 2.2rem;
        letter-spacing: 2px;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .feature-card {
        padding: 25px 15px;
    }
    
    .feature-title {
        font-size: 1rem;
    }
    
    .contact-section {
        flex-direction: column;
        text-align: center;
        padding: 30px;
    }
    
    .qr-container {
        margin-left: 0;
        margin-top: 20px;
    }
}

@media (max-width: 480px) {
    .main-card {
        padding: 30px 20px;
    }
    
    .company-title {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .feature-card {
        padding: 20px 15px;
    }
    
    .feature-title {
        font-size: 0.95rem;
    }
    
    .qr-code {
        width: 140px;
        height: 140px;
    }
}

@media (max-width: 360px) {
    .feature-card {
        padding: 18px 12px;
    }
    
    .feature-title {
        font-size: 0.9rem;
    }
    
    .feature-icon {
        width: 2rem;
        height: 2rem;
    }
}