:root{--sip-green:#3A8D35;--sip-red:#A2122B;--sip-gray:#6F6C67}
.sipn-form .sipn-grid{display:grid;gap:1rem}
.sipn-form input[type="text"],.sipn-form input[type="email"],.sipn-form textarea,.sipn-form select{width:100%}
.sipn-form .button-primary{background:var(--sip-green);color:#fff;border:none;border-radius:6px;padding:.6rem 1rem}
.sipn-form .button-primary:hover{background:var(--sip-red)}
.sipn-notice{padding:1rem;background:#e6ffed;border:1px solid #b7f5c7;margin-bottom:1rem}
.sipn-counter{display:block;text-align:right}
/* Gallery */
.sipn-gallery-title{color:var(--sip-green);margin:0 0 .5rem 0}
.sipn-gallery-filters{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1rem}
.sipn-grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem}
.sipn-card{border:1px solid var(--sip-gray);border-radius:10px;background:#fff;overflow:hidden;transition:transform .2s}
.sipn-card:hover{transform:translateY(-4px);box-shadow:0 2px 6px rgba(0,0,0,.1)}
.sipn-card-photo{width:100%;aspect-ratio:1/1;background:#f3f3f3;display:flex;align-items:center;justify-content:center}
.sipn-card-photo img{width:100%;height:100%;object-fit:cover}
.sipn-placeholder{width:50%;height:50%;border-radius:50%;background:#ddd}
.sipn-card-content{padding:0.8rem}
.sipn-card h3{margin:.2rem 0;color:#111}
.sipn-card .org{color:#333;margin:.2rem 0 .4rem 0}
.sipn-card .topic{color:var(--sip-red);font-weight:600;margin:.2rem 0}
.sipn-card .talk-title{font-weight:600;margin:.2rem 0}
.sipn-card .vita{margin:.2rem 0;color:#222}