:root { --bt-dark: #1A2235; --bt-dark2: #232C42; --bt-text-lt: #D1D5DB; --bt-gold: #E0A100; }
.bta-trust-sec { background: var(--bt-dark); padding: 100px 20px; font-family: sans-serif; }
.bta-wrap { max-width: 1200px; margin: 0 auto; }
.bta-sec-head { text-align: center; margin-bottom: 50px; }
.bta-h2 { font-size: 2.5rem; color: var(--bt-gold); margin-bottom: 1.5rem; }
.bta-grid { display: grid; gap: 30px; }
.bta-grid-4 { grid-template-columns: repeat(4, 1fr); }
.bta-card { padding: 36px 28px; border-radius: 16px; transition: transform 0.3s; }
.bta-card:hover { transform: translateY(-5px); }
.bta-card-dark { background: var(--bt-dark2); color: var(--bt-text-lt); }
.bta-h3 { font-size: 1.25rem; color: #fff; margin-bottom: 0.75rem; }
@media(max-width: 1024px) { .bta-grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media(max-width: 576px) { .bta-grid-4 { grid-template-columns: 1fr; } }