/* Подписка и уведомления — тёмная тема */
.sb-section{margin:26px 0}
.sb-box{display:flex;gap:16px;align-items:flex-start;background:linear-gradient(135deg,#111827,#151e32);border:1px solid rgba(139,92,246,.28);border-radius:18px;padding:20px 22px;color:#f8fafc}
.sb-ico{font-size:32px;line-height:1;flex:none;filter:drop-shadow(0 4px 10px rgba(139,92,246,.5))}
.sb-body{flex:1;min-width:0}
.sb-title{font-size:18px;font-weight:800;margin-bottom:4px}
.sb-sub{color:#94a3b8;font-size:14px;margin-bottom:12px}
.sb-row{display:flex;gap:10px;flex-wrap:wrap}
.sb-input{flex:1;min-width:200px;background:#0b1120;border:1px solid rgba(148,163,184,.22);color:#f8fafc;border-radius:10px;padding:11px 14px;font-size:14px;outline:none}
.sb-input:focus{border-color:#8b5cf6}
.sb-btn{background:linear-gradient(90deg,#8b5cf6,#2563eb);color:#fff;border:none;border-radius:10px;padding:11px 22px;font-size:14px;font-weight:700;cursor:pointer;white-space:nowrap}
.sb-btn:hover{filter:brightness(1.08)}
.sb-btn:disabled{opacity:.6;cursor:default}
.sb-msg{font-size:13px;min-height:18px;margin-top:8px}
.sb-msg.ok{color:#00d4aa}
.sb-msg.err{color:#ef4444}
.sb-compact{padding:16px 18px}
.sb-compact .sb-ico{font-size:26px}
.sb-compact .sb-title{font-size:16px}
@media(max-width:560px){.sb-box{flex-direction:column}.sb-btn{width:100%}}