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var(--primary-light)}.committee-sub-header h3{font-size:20px;color:var(--primary-dark);font-weight:600}.committee-sub-header span{font-size:13px;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:1px}.sponsor-tier{margin-bottom:36px}.sponsor-tier-header{text-align:center;margin-bottom:16px}.sponsor-tier-label{text-align:center;font-size:16px;font-weight:700;margin-bottom:16px;padding:6px 24px;display:inline-block;border-radius:20px;color:#fff}.sponsor-tier-label.gold{background:linear-gradient(135deg,#FFD700,#FFA500)}.sponsor-tier-label.silver{background:linear-gradient(135deg,#C0C0C0,#A8A8A8)}.sponsor-tier-label.bronze{background:linear-gradient(135deg,#CD7F32,#B87333)}.sponsor-tier-label.single{background:linear-gradient(135deg,#4A90D9,#357ABD)}.sponsor-tier-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:20px}.sponsor-tier-grid .sponsor-card{flex:0 1 200px}.sponsors-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;align-items:center}.sponsor-card{text-align:center;padding:16px;border:1px solid var(--border-color);border-radius:8px;background:#fff;transition:box-shadow 0.2s,transform 0.2s}.sponsor-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.sponsor-logo{height:80px;display:flex;align-items:center;justify-content:center;color:var(--text-tertiary);font-size:13px;margin-bottom:10px;background:var(--bg-secondary);border-radius:4px}.sponsor-logo img{max-width:100%;max-height:80px;object-fit:contain}.sponsor-name{font-size:13px;color:var(--text-secondary);font-weight:500}@media (max-width:768px){.sponsors-grid{grid-template-columns:repeat(3,1fr)}.speaker-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:480px){.sponsors-grid{grid-template-columns:repeat(2,1fr)}}.back-to-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:all 0.3s;z-index:999;border:none;font-size:20px}.back-to-top.visible{opacity:1;visibility:visible}.back-to-top:hover{background:var(--primary-dark);transform:translateY(-2px)}@media (max-width:768px){.nav-menu{display:none;position:fixed;top:var(--nav-height);left:0;right:0;background:#fff;flex-direction:column;padding:16px;box-shadow:var(--shadow-lg);border-top:1px solid var(--border-color);max-height:calc(100vh - var(--nav-height));overflow-y:auto}.nav-menu.open{display:flex}.nav-menu a{width:100%;padding:12px 16px}.nav-toggle{display:flex}.hero-content h1{font-size:24px}.hero-content .hero-subtitle{font-size:15px}.hero-meta{gap:16px}.hero-meta-item{font-size:13px}.section-header h2{font-size:22px}.schedule-row{grid-template-columns:100px 1fr}.schedule-location{display:none}.venue-grid{grid-template-columns:1fr}.footer-content{grid-template-columns:1fr;gap:24px}.top-bar{display:none}.dates-grid{grid-template-columns:1fr 1fr}.page-banner h1{font-size:22px}.quick-links{grid-template-columns:1fr 1fr}}@media (max-width:480px){.dates-grid{grid-template-columns:1fr}.committee-grid{grid-template-columns:1fr}.committee-grid-center .member-card{width:100%;max-width:280px}.committee-text-grid{grid-template-columns:repeat(2,1fr)}.speaker-grid{grid-template-columns:1fr}.quick-links{grid-template-columns:1fr}.hero-content h1{font-size:20px}.hero-actions{flex-direction:column;align-items:center}.hero-actions .btn{width:100%;max-width:280px;justify-content:center}}.speaker-grid-full{grid-template-columns:1fr!important}.training-meta{margin-top:8px;font-size:13px;color:var(--text-tertiary)}.course-intro{margin-top:10px;padding-top:10px;border-top:1px dashed var(--border-color);font-size:14px;line-height:1.8;color:var(--text-secondary);text-align:justify}.course-label{font-weight:600;color:var(--text-secondary)}.teacher-details{margin-top:10px;padding-top:10px;border-top:1px dashed var(--border-color)}.teacher-details summary{cursor:pointer;font-size:13.5px;font-weight:600;color:var(--primary);user-select:none;list-style:none;display:inline-flex;align-items:center;gap:6px}.teacher-details summary::-webkit-details-marker{display:none}.teacher-details summary::after{content:"\25B8";transition:transform .2s ease;font-size:12px}.teacher-details[open] summary::after{transform:rotate(90deg)}.teacher-details summary:hover{text-decoration:underline}.teacher-bio{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-secondary);text-align:justify}