/* === columns-4 === */
.sc4-inner{padding:100px 48px;max-width:1100px;margin:0 auto}
.sc4-inner h2{font-family:var(--shell-hf);font-size:2rem;font-weight:700;color:var(--shell-h);margin-bottom:8px}
.sc4-sub{font-size:.82rem;color:var(--shell-m);margin-bottom:40px}
.sc4-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.sc4-card{padding:28px 24px;border:1px solid var(--shell-line,rgba(255,255,255,.06));background:var(--shell-card,rgba(255,255,255,.02));transition:.3s}
.sc4-card:hover{border-color:var(--sc,var(--shell-accent));transform:translateY(-2px)}
.sc4-card h3{font-size:.88rem;font-weight:700;color:var(--shell-h);margin-bottom:8px}
.sc4-card p{font-size:.78rem;color:var(--shell-m)}
@media(max-width:768px){.sc4-inner{padding:60px 24px}.sc4-grid{grid-template-columns:1fr 1fr}@media(max-width:480px){.sc4-grid{grid-template-columns:1fr}}}