:root{--page-bg:#f8fafc;--surface:#ffffff;--surface-strong:#0f172a;--text-main:#0f172a;--text-muted:#475569;--accent:#0f4c81;--accent-usa:#0a36af;--accent-mex:#006341;--accent-can:#da291c;--border:#e2e8f0;--card-shadow:0 4px 20px rgba(15,23,42,0.05);--transition:all 0.3s cubic-bezier(0.4,0,0.2,1)}body{background-color:var(--page-bg);color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-x:hidden;line-height:1.6}.card-custom{background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--card-shadow);transition:var(--transition);overflow:hidden}.card-custom:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(15,23,42,0.1)}.header-nav{background-color:rgba(255,255,255,0.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000}.brand-logo{height:40px;object-fit:contain}.nav-link-custom{color:var(--text-muted);font-weight:500;transition:var(--transition);position:relative;padding:0.5rem 1rem}.nav-link-custom:hover,.nav-link-custom.active{color:var(--accent-usa)}.color-bar{height:6px;width:100%;display:flex}.color-bar span{flex:1}.bar-usa{background-color:var(--accent-usa)}.bar-mex{background-color:var(--accent-mex)}.bar-can{background-color:var(--accent-can)}section{padding:80px 0;border-bottom:1px solid var(--border)}.section-title{font-weight:800;margin-bottom:30px;position:relative;padding-bottom:15px;color:var(--surface-strong)}.section-title::after{content:'';position:absolute;left:0;bottom:0;width:60px;height:4px;background:linear-gradient(90deg,var(--accent-usa),var(--accent-mex),var(--accent-can));border-radius:2px}.hero-section{background:radial-gradient(circle at 10% 20%,rgba(243,244,246,1) 0%,rgba(229,231,235,1) 90%);padding:100px 0}.hero-title{font-size:2.5rem;font-weight:900;line-height:1.25;color:var(--surface-strong)}.hero-img-wrap{border-radius:14px;overflow:hidden;box-shadow:0 15px 40px rgba(0,0,0,0.15)}.schedule-timeline{position:relative}.timeline-item{border-left:3px solid var(--accent-usa);padding-left:20px;margin-bottom:25px;position:relative}.timeline-item::before{content:'';position:absolute;left:-8px;top:5px;width:13px;height:13px;background-color:var(--surface);border:3px solid var(--accent-usa);border-radius:50%}.group-scroll-container{overflow-x:auto;-webkit-overflow-scrolling:touch}.group-card{min-width:260px}.guide-card{background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff}.accordion-button:not(.collapsed){background-color:rgba(10,54,175,0.05);color:var(--accent-usa)}@media (max-width:991.98px){.hero-title{font-size:2rem}section{padding:50px 0}}