:root{--color-primary: #0066cc;--color-primary-dark: #004d99;--color-primary-light: #3399ff;--color-accent: #00d4aa;--color-accent-light: #66f2c7;--color-bg: #f5f8fb;--color-surface: #ffffff;--color-text: #1a2332;--color-text-secondary: #5a6678;--color-text-muted: #8a94a6;--color-border: #dbe3ed;--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 12px rgba(0,0,0,.1);--shadow-lg: 0 12px 32px rgba(0,0,0,.12);--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--max-width: 1280px;--header-height: 64px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}button{font-family:inherit;cursor:pointer}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-md)}.page-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;margin-bottom:var(--space-sm);color:var(--color-text)}.page-subtitle{font-size:1rem;color:var(--color-text-secondary);margin-bottom:var(--space-xl)}.section{padding:var(--space-2xl) 0}.section-title{font-size:1.5rem;font-weight:700;margin-bottom:var(--space-lg);display:flex;align-items:center;gap:var(--space-sm)}.section-title:before{content:"";width:4px;height:24px;background:linear-gradient(180deg,var(--color-primary),var(--color-accent));border-radius:2px}.card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);overflow:hidden}.card-body{padding:var(--space-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);border:1px solid transparent;font-size:.95rem;font-weight:500;transition:all .2s ease;text-decoration:none}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));color:#fff}.btn-primary:hover{background:linear-gradient(135deg,var(--color-primary-dark),#003d73);text-decoration:none}.btn-secondary{background:#fff;color:var(--color-primary);border-color:var(--color-primary)}.btn-secondary:hover{background:#f0f7ff;text-decoration:none}.btn-ghost{background:transparent;color:var(--color-text-secondary);border-color:var(--color-border)}.btn-ghost:hover{background:var(--color-bg);text-decoration:none}.btn-sm{padding:var(--space-xs) var(--space-sm);font-size:.85rem}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:.75rem;font-weight:600}.badge-primary{background:#e6f2ff;color:var(--color-primary-dark)}.badge-success{background:#d1fae5;color:#065f46}.badge-warning{background:#fef3c7;color:#92400e}.badge-danger{background:#fee2e2;color:#991b1b}.badge-muted{background:#f1f5f9;color:var(--color-text-secondary)}.form-group{margin-bottom:var(--space-md)}.form-label{display:block;font-size:.9rem;font-weight:500;margin-bottom:var(--space-xs);color:var(--color-text)}.form-input,.form-select,.form-textarea{width:100%;padding:var(--space-sm) var(--space-md);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:1rem;background:#fff;color:var(--color-text)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #0066cc1f}.form-textarea{min-height:100px;resize:vertical}.grid{display:grid;gap:var(--space-lg)}.grid-2{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.grid-3{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.grid-4{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}@media (min-width: 768px){.md-grid-2{grid-template-columns:repeat(2,1fr)}.md-grid-3{grid-template-columns:repeat(3,1fr)}.md-grid-4{grid-template-columns:repeat(4,1fr)}}.text-center{text-align:center}.text-secondary{color:var(--color-text-secondary)}.text-muted{color:var(--color-text-muted)}.mt-sm{margin-top:var(--space-sm)}.mt-md{margin-top:var(--space-md)}.mt-lg{margin-top:var(--space-lg)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.site-header{position:sticky;top:0;z-index:1000;background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--color-border)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-height)}.brand{display:flex;align-items:baseline;gap:var(--space-sm);text-decoration:none;color:var(--color-text)}.brand-logo{font-size:1.5rem;font-weight:800;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.brand-year{font-size:.9rem;font-weight:600;color:var(--color-text-muted)}.main-nav{display:none;align-items:center;gap:var(--space-sm)}.nav-link{padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);font-size:.95rem;font-weight:500;color:var(--color-text-secondary);text-decoration:none;white-space:nowrap}.nav-link:hover,.nav-link.active{color:var(--color-primary);background:#f0f7ff;text-decoration:none}.header-actions{display:flex;align-items:center;gap:var(--space-md)}.lang-switcher{display:flex;border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden}.lang-btn{border:none;background:#fff;padding:var(--space-xs) var(--space-sm);font-size:.8rem;font-weight:600;color:var(--color-text-secondary)}.lang-btn.active{background:var(--color-primary);color:#fff}.user-menu{position:relative}.user-toggle{display:flex;align-items:center;gap:var(--space-sm)}.user-avatar{width:24px;height:24px;border-radius:50%;background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700}.user-dropdown{display:none;position:absolute;right:0;top:calc(100% + var(--space-sm));background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md);min-width:160px;padding:var(--space-sm);flex-direction:column}.user-menu.open .user-dropdown{display:flex}.user-dropdown a,.user-dropdown button{padding:var(--space-sm);border-radius:var(--radius-sm);color:var(--color-text);text-decoration:none;text-align:left;background:transparent;border:none;font-size:.95rem}.user-dropdown a:hover,.user-dropdown button:hover{background:var(--color-bg)}.mobile-menu-toggle{display:flex;flex-direction:column;gap:4px;width:32px;height:32px;border:none;background:transparent;justify-content:center;align-items:center}.mobile-menu-toggle span{display:block;width:22px;height:2px;background:var(--color-text);border-radius:1px;transition:transform .2s}@media (min-width: 1024px){.main-nav{display:flex}.mobile-menu-toggle{display:none}}.site-header.mobile-open .main-nav{display:flex;flex-direction:column;position:absolute;top:var(--header-height);left:0;right:0;background:#fff;border-bottom:1px solid var(--color-border);padding:var(--space-md);box-shadow:var(--shadow-md)}.site-footer{background:#0b1a2e;color:#cbd5e1;padding-top:var(--space-2xl)}.footer-grid{display:grid;gap:var(--space-xl);grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.footer-brand .brand-logo{font-size:1.5rem;font-weight:800;color:#fff;-webkit-text-fill-color:white;margin-bottom:var(--space-sm)}.footer-section h4{color:#fff;font-size:1rem;margin-bottom:var(--space-md)}.footer-section ul{list-style:none;padding:0;margin:0}.footer-section li{margin-bottom:var(--space-sm);font-size:.9rem}.footer-section a{color:#94a3b8}.footer-section a:hover{color:#fff}.footer-meta{color:#94a3b8;font-size:.9rem;margin:var(--space-xs) 0}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:var(--space-xl);padding:var(--space-md) 0}.footer-bottom-inner{display:flex;flex-direction:column;gap:var(--space-sm);align-items:center;font-size:.85rem;color:#94a3b8}.footer-links{display:flex;gap:var(--space-md)}.footer-links a{color:#94a3b8}@media (min-width: 768px){.footer-bottom-inner{flex-direction:row;justify-content:space-between}}.hero{position:relative;min-height:520px;display:flex;align-items:center;color:#fff;overflow:hidden}.hero-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:url(./hero-banner-CfqQvUrq.jpg) center/cover no-repeat}.hero-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,#001e46e0,#001e468c 55%,#001e4633)}.hero-content{position:relative;z-index:2;max-width:680px;padding:var(--space-2xl) 0}.hero-tag{display:inline-block;background:#00d4aa33;color:var(--color-accent-light);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-md);font-size:.85rem;font-weight:600;margin-bottom:var(--space-md);border:1px solid rgba(0,212,170,.35)}.hero-title{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.15;margin-bottom:var(--space-md)}.hero-subtitle{font-size:clamp(1rem,2vw,1.35rem);opacity:.95;margin-bottom:var(--space-lg)}.hero-meta{display:flex;flex-wrap:wrap;gap:var(--space-md);margin-bottom:var(--space-xl);font-size:1rem}.hero-meta span{display:flex;align-items:center;gap:var(--space-xs)}.hero-actions{display:flex;flex-wrap:wrap;gap:var(--space-md)}.hero-actions .btn{padding:var(--space-md) var(--space-lg);font-size:1rem}.countdown{background:#00000059;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:var(--radius-lg);padding:var(--space-md) var(--space-lg);display:inline-flex;gap:var(--space-lg);margin-bottom:var(--space-xl);border:1px solid rgba(255,255,255,.15)}.countdown-item{text-align:center}.countdown-value{font-size:2rem;font-weight:800;line-height:1;color:var(--color-accent-light)}.countdown-label{font-size:.75rem;opacity:.85;margin-top:var(--space-xs)}.announcement-bar{background:#fff7ed;border-bottom:1px solid #fed7aa;padding:var(--space-sm) 0}.announcement-bar .container{display:flex;align-items:center;gap:var(--space-md);overflow:hidden}.announcement-list{display:flex;gap:var(--space-lg);overflow-x:auto;scrollbar-width:none}.announcement-list::-webkit-scrollbar{display:none}.announcement-list a{color:var(--color-text);font-size:.9rem;white-space:nowrap}.intro-section{background:#fff}.intro-grid{display:grid;gap:var(--space-xl);align-items:center}@media (min-width: 768px){.intro-grid{grid-template-columns:1.2fr 1fr}}.intro-text{font-size:1.05rem;color:var(--color-text-secondary)}.intro-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-md)}.stat-card{background:var(--color-bg);border-radius:var(--radius-lg);padding:var(--space-lg);text-align:center}.stat-value{font-size:2rem;font-weight:800;color:var(--color-primary)}.stat-label{font-size:.85rem;color:var(--color-text-secondary)}.venue-grid{display:grid;gap:var(--space-md);grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.venue-card{background:var(--color-bg);border-radius:var(--radius-lg);padding:var(--space-lg);border-left:4px solid var(--color-primary)}.venue-card h4{margin:0 0 var(--space-xs);font-size:1.05rem}.venue-card p{margin:0;font-size:.85rem;color:var(--color-text-secondary)}.guest-carousel{display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.guest-card{text-align:center;padding:var(--space-lg)}.guest-photo{width:96px;height:96px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-md);color:#fff;font-size:2rem;font-weight:700}.guest-name{font-size:1.1rem;font-weight:700;margin-bottom:var(--space-xs)}.guest-org{font-size:.9rem;color:var(--color-text-secondary);margin-bottom:var(--space-xs)}.guest-title{font-size:.8rem;color:var(--color-text-muted)}.partner-grid{display:flex;flex-wrap:wrap;gap:var(--space-md);justify-content:center}.partner-chip{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);font-size:.9rem;color:var(--color-text-secondary)}.schedule-toolbar{display:flex;flex-wrap:wrap;gap:var(--space-md);margin-bottom:var(--space-lg);background:#fff;padding:var(--space-md);border-radius:var(--radius-lg);border:1px solid var(--color-border)}.schedule-toolbar select,.schedule-toolbar input{min-width:160px}.date-tabs{display:flex;gap:var(--space-sm);overflow-x:auto;margin-bottom:var(--space-lg);padding-bottom:var(--space-sm)}.date-tab{padding:var(--space-sm) var(--space-md);border:1px solid var(--color-border);background:#fff;border-radius:var(--radius-md);font-weight:500;color:var(--color-text-secondary);white-space:nowrap}.date-tab.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.schedule-list{display:flex;flex-direction:column;gap:var(--space-md)}.schedule-item{display:grid;gap:var(--space-md);padding:var(--space-lg);transition:box-shadow .2s}.schedule-item:hover{box-shadow:var(--shadow-md)}@media (min-width: 768px){.schedule-item{grid-template-columns:140px 1fr auto;align-items:start}}.schedule-time{font-weight:700;color:var(--color-primary);font-size:1.05rem}.schedule-duration{font-size:.8rem;color:var(--color-text-muted)}.schedule-title{font-size:1.1rem;font-weight:700;margin-bottom:var(--space-xs)}.schedule-meta{display:flex;flex-wrap:wrap;gap:var(--space-sm);font-size:.85rem;color:var(--color-text-secondary);margin-bottom:var(--space-sm)}.schedule-desc{font-size:.9rem;color:var(--color-text-secondary);margin-bottom:var(--space-sm)}.schedule-actions{display:flex;flex-direction:column;gap:var(--space-sm);align-items:flex-end}.schedule-capacity{font-size:.8rem;color:var(--color-text-muted)}.guests-toolbar{display:flex;flex-wrap:wrap;gap:var(--space-md);margin-bottom:var(--space-lg)}.guests-toolbar input,.guests-toolbar select{flex:1;min-width:180px}.guests-grid{display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.guests-card{display:flex;gap:var(--space-md);align-items:flex-start;padding:var(--space-lg)}.guests-photo{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.5rem;font-weight:700;flex-shrink:0}.guests-info{flex:1}.guests-info h4{margin:0 0 var(--space-xs);font-size:1.05rem}.guests-info p{margin:0 0 var(--space-xs);font-size:.85rem;color:var(--color-text-secondary)}.reg-tabs{display:flex;gap:var(--space-md);margin-bottom:var(--space-lg);border-bottom:1px solid var(--color-border)}.reg-tab{padding:var(--space-md) var(--space-lg);background:transparent;border:none;border-bottom:3px solid transparent;font-weight:600;color:var(--color-text-secondary)}.reg-tab.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.reg-form{max-width:720px;background:#fff;padding:var(--space-xl);border-radius:var(--radius-lg);border:1px solid var(--color-border)}.timeline{position:relative;padding-left:28px}.timeline:before{content:"";position:absolute;left:8px;top:0;bottom:0;width:2px;background:var(--color-border)}.timeline-item{position:relative;padding-bottom:var(--space-lg)}.timeline-item:before{content:"";position:absolute;left:-24px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--color-primary);border:2px solid white;box-shadow:0 0 0 2px var(--color-primary)}.timeline-time{font-weight:700;color:var(--color-primary);font-size:.9rem}.timeline-title{font-weight:700;margin-bottom:var(--space-xs)}.timeline-location{font-size:.85rem;color:var(--color-text-secondary)}.volunteer-stats{display:grid;gap:var(--space-md);grid-template-columns:repeat(auto-fit,minmax(160px,1fr));margin-bottom:var(--space-xl)}.stat-mini{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-md);text-align:center}.stat-mini-value{font-size:1.75rem;font-weight:800;color:var(--color-primary)}.stat-mini-label{font-size:.8rem;color:var(--color-text-secondary)}.guest-row{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);border-bottom:1px solid var(--color-border)}.guest-row:last-child{border-bottom:none}.dashboard-grid{display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.dashboard-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--color-border);padding:var(--space-lg)}.dashboard-card h3{margin:0 0 var(--space-md);font-size:1rem;color:var(--color-text-secondary)}.metric-list{display:flex;flex-direction:column;gap:var(--space-sm)}.metric-row{display:flex;justify-content:space-between;align-items:center;font-size:.95rem}.metric-value{font-weight:700;color:var(--color-primary)}.file-list{display:flex;flex-direction:column;gap:var(--space-md)}.file-row{display:flex;justify-content:space-between;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg)}.file-info h4{margin:0 0 var(--space-xs);font-size:1rem}.file-meta{font-size:.8rem;color:var(--color-text-muted)}.hotel-card h4{margin:0 0 var(--space-xs)}.hotel-meta{display:grid;gap:var(--space-xs);font-size:.85rem;color:var(--color-text-secondary)}.contact-grid{display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.contact-card{padding:var(--space-lg)}.contact-card h4{margin:0 0 var(--space-sm);color:var(--color-primary)}.contact-card p{margin:0 0 var(--space-xs);font-size:.9rem}.auth-container{min-height:calc(100vh - var(--header-height) - 300px);display:flex;align-items:center;justify-content:center;padding:var(--space-xl) 0}.auth-box{width:100%;max-width:420px;background:#fff;border-radius:var(--radius-lg);border:1px solid var(--color-border);padding:var(--space-xl);box-shadow:var(--shadow-md)}.auth-box h2{text-align:center;margin-bottom:var(--space-lg)}.demo-roles{display:flex;flex-wrap:wrap;gap:var(--space-sm);justify-content:center;margin-top:var(--space-lg)}