.block4 {
    width: 100%;
    min-height: 100vh;
    box-sizing: border-box;
    color: #fff;
    font-family: 'Segoe UI', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.block4::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,255,180,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.contacts-content {
    max-width: 1100px;
    width: 100%;
    text-align: center;
    z-index: 2;
}

.section-title h2 {
    font-size: 54px;
    font-weight: 700;
    color: #00ffb4;
    margin-bottom: 16px;
}

.section-title p {
    font-size: 21px;
    color: #94a3b8;
    margin-bottom: 80px;
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.contact-card {
    aspect-ratio: 1 / 1;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(0, 255, 180, 0.25);
    border-radius: 26px;
    padding: 40px 32px;
    text-decoration: none;
    color: #fff;
    transition: all 0.35s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 22px;
    backdrop-filter: blur(16px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.45);
}

.contact-card:hover {
    transform: translateY(-14px);
    border-color: #00ffb4;
    box-shadow: 0 25px 55px rgba(0, 255, 180, 0.35);
}

.contact-icon {
    width: 110px;
    height: 110px;
    background: rgba(0, 255, 180, 0.12);
    border-radius: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(0, 255, 180, 0.25);
}

.contact-icon img {
    width: 60px;
    height: 60px;
    filter: drop-shadow(0 0 12px rgba(0,255,180,0.7));
}

.contact-name {
    font-size: 24px;
    font-weight: 700;
    color: #00ffb4;
}

.contact-value {
    font-size: 18px;
    color: #e2e8f0;
}

.contact-desc {
    font-size: 15px;
    color: #94a3b8;
}

.contacts-note {
    color: #64748b;
    font-size: 17px;
    margin-top: 70px;
}

.copy-popup {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(0, 255, 180, 0.15);
    border: 1px solid rgba(0, 255, 180, 0.4);
    padding: 14px 26px;
    border-radius: 14px;
    color: #00ffb4;
    font-size: 16px;
    font-weight: 600;
    backdrop-filter: blur(10px);
    opacity: 0;
    transition: 0.35s ease;
    z-index: 9999;
}

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