:root{--primary-color:#ee4336;--secondary-color:#adb5bd;--background-color:#212529;--text-color:#f8f9fa;--border-color:#343a40;--shadow:0 4px 6px rgba(0,0,0,.5);--transition-speed:0.3s}.accordion-container{align-items:center;display:flex;justify-content:center}.accordion{background:#2c3034;border-radius:12px;box-shadow:var(--shadow);max-width:1240px;overflow:hidden;width:100%}.accordion-title{background:linear-gradient(135deg,#051935,#1f4170);color:#fff;font-size:1.5em;font-weight:700;letter-spacing:.5px;margin:0;padding:20px;text-align:center}.accordion-item{border-bottom:1px solid var(--border-color);transition:all var(--transition-speed)}.accordion-item:last-child{border-bottom:none}.accordion-header{align-items:center;background-color:#2c3034;color:var(--text-color);cursor:pointer;display:flex;font-size:1.1em;font-weight:600;margin:0;padding:20px;position:relative;transition:background-color var(--transition-speed),color var(--transition-speed)}.accordion-header::marker{display:none}.accordion-header:after{color:var(--primary-color);content:"+";font-size:1.5em;position:absolute;right:20px;transition:transform var(--transition-speed) ease}.accordion-item[open] .accordion-header:after{content:"-";transform:rotate(45deg)}.accordion-header:focus,.accordion-header:hover{background-color:#343a40;color:var(--primary-color)}.accordion-content{background-color:#2c3034;border-top:1px solid var(--border-color);color:var(--text-color);max-height:0;opacity:0;overflow:hidden;padding:20px;transition:opacity var(--transition-speed) ease,max-height var(--transition-speed) ease,padding var(--transition-speed) ease}.accordion-item[open] .accordion-content{max-height:2000px;opacity:1;padding:20px}.session{background-color:#2c3034;border:1px solid var(--border-color);border-radius:8px;display:grid;gap:20px;grid-template-columns:1fr 3fr;margin-bottom:20px;padding:15px;transition:box-shadow var(--transition-speed)}.session:hover{box-shadow:var(--shadow)}.session-left{align-items:center;display:flex;flex-direction:column;text-align:center}.session-time{color:var(--primary-color);font-size:1.1em;font-weight:600;margin-bottom:10px}.presenter-image{height:auto;margin-bottom:5px;object-fit:cover;width:150px}.presenter-name{color:var(--text-color);font-size:.95em;font-weight:600}.session-right{display:flex;flex-direction:column}.session-title{color:var(--text-color);font-size:1.1em;font-weight:600;margin:0 0 8px;text-decoration:underline solid var(--primary-color) 2px}.session-description{color:var(--secondary-color);font-size:.95em;margin:0}@media (max-width:600px){.accordion{max-width:100%}.accordion-title{font-size:1.2em}.accordion-header{font-size:1em;padding:15px}.accordion-content{padding:15px}.session{grid-template-columns:1fr;text-align:center}.session-left{margin-bottom:10px}}