:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fc;--bg-tertiary: #eef1f6;--bg-card: #ffffff;--bg-card-hover: #f0f4ff;--bg-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--text-primary: #1a1a2e;--text-secondary: #4a4a6a;--text-tertiary: #7a7a9a;--text-on-hero: #ffffff;--text-accent: #5b5ea6;--accent-primary: #667eea;--accent-secondary: #764ba2;--accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--border-color: #e2e8f0;--border-light: #f0f0f5;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 14px rgba(0, 0, 0, .08);--shadow-lg: 0 10px 40px rgba(0, 0, 0, .1);--shadow-card: 0 2px 12px rgba(0, 0, 0, .06);--nav-bg: rgba(255, 255, 255, .85);--nav-border: rgba(226, 232, 240, .8);--badge-bg: rgba(102, 126, 234, .1);--badge-text: #5b5ea6;--timeline-line: #e2e8f0;--timeline-dot: #667eea;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--transition: .3s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{--bg-primary: #0f0f1a;--bg-secondary: #161625;--bg-tertiary: #1e1e32;--bg-card: #1a1a2e;--bg-card-hover: #252542;--bg-hero: linear-gradient(135deg, #1a1a3e 0%, #2d1b4e 100%);--text-primary: #e8e8f0;--text-secondary: #a8a8c0;--text-tertiary: #6a6a8a;--text-accent: #8b8ef0;--accent-primary: #7b8ef8;--accent-secondary: #9b6bd6;--border-color: #2a2a45;--border-light: #1f1f35;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 14px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 40px rgba(0, 0, 0, .5);--shadow-card: 0 2px 12px rgba(0, 0, 0, .3);--nav-bg: rgba(15, 15, 26, .9);--nav-border: rgba(42, 42, 69, .8);--badge-bg: rgba(123, 142, 248, .15);--badge-text: #8b8ef0;--timeline-line: #2a2a45;--timeline-dot: #7b8ef8}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;transition:background-color var(--transition),color var(--transition);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--accent-primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--accent-secondary)}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--nav-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--nav-border);transition:all var(--transition)}.navbar-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:64px}.navbar-brand{font-weight:700;font-size:1.1rem;color:var(--text-primary);display:flex;align-items:center;gap:8px;text-decoration:none}.navbar-brand span{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;align-items:center;gap:2px;list-style:none}.nav-links a{padding:8px 14px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.875rem;font-weight:500;transition:all var(--transition);white-space:nowrap}.nav-links a:hover,.nav-links a.active{color:var(--text-primary);background:var(--bg-tertiary)}.theme-toggle{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:8px 12px;cursor:pointer;color:var(--text-secondary);font-size:1.1rem;transition:all var(--transition);display:flex;align-items:center;justify-content:center}.theme-toggle:hover{background:var(--bg-card-hover);color:var(--text-primary)}.mobile-menu-btn{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:4px}.hero{background:var(--bg-hero);padding:160px 24px 120px;text-align:center;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");opacity:.4}.hero:after{content:"";position:absolute;bottom:0;left:0;right:0;height:80px;background:linear-gradient(to top,var(--bg-primary),transparent);pointer-events:none}.hero-content{max-width:900px;margin:0 auto;position:relative;z-index:1}.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:100px;padding:8px 20px;font-size:.85rem;font-weight:500;color:#fffffff2;margin-bottom:28px;letter-spacing:.05em}.hero-badge-dot{width:8px;height:8px;border-radius:50%;background:#4ade80;animation:pulse-dot 2s ease-in-out infinite}@keyframes pulse-dot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(.8)}}.hero h1{font-size:clamp(2.4rem,5vw,3.8rem);font-weight:800;color:var(--text-on-hero);line-height:1.1;margin-bottom:20px;letter-spacing:-.03em}.hero-subtitle{font-size:clamp(1.05rem,2vw,1.3rem);color:#fffc;margin-bottom:16px;font-weight:400;line-height:1.5;max-width:700px;margin-left:auto;margin-right:auto}.hero-meta{display:flex;align-items:center;justify-content:center;gap:32px;flex-wrap:wrap;margin-top:36px}.hero-meta-item{display:flex;align-items:center;gap:8px;color:#ffffffe6;font-size:.95rem;font-weight:500}.hero-meta-icon{font-size:1.1rem}.hero-actions{display:flex;gap:16px;justify-content:center;margin-top:44px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:var(--radius-sm);font-size:.95rem;font-weight:600;cursor:pointer;transition:all var(--transition);border:none;text-decoration:none}.btn-primary{background:#fff;color:#1a1a2e}.btn-primary:hover{background:#f0f0ff;transform:translateY(-2px);box-shadow:0 8px 25px #00000026;color:#1a1a2e}.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.3)}.btn-outline:hover{border-color:#fff9;background:#ffffff1a;transform:translateY(-2px);color:#fff}.section{padding:96px 24px}.section-alt{background:var(--bg-secondary)}.container{max-width:1100px;margin:0 auto}.section-header{text-align:center;margin-bottom:60px}.section-label{display:inline-block;font-family:var(--font-mono);font-size:.78rem;font-weight:500;color:var(--accent-primary);text-transform:uppercase;letter-spacing:.12em;margin-bottom:14px;background:var(--badge-bg);padding:5px 14px;border-radius:6px}.section-title{font-size:clamp(1.8rem,3vw,2.5rem);font-weight:800;color:var(--text-primary);letter-spacing:-.02em;margin-bottom:14px}.section-description{font-size:1.05rem;color:var(--text-secondary);max-width:650px;margin:0 auto;line-height:1.7}.about-content{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}.about-text{font-size:1.02rem;color:var(--text-secondary);line-height:1.8}.about-text p+p{margin-top:18px}.about-highlights{display:grid;gap:14px}.highlight-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:20px 24px;display:flex;align-items:flex-start;gap:16px;transition:all var(--transition);box-shadow:var(--shadow-sm)}.highlight-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--accent-primary)}.highlight-icon{font-size:1.4rem;flex-shrink:0;margin-top:2px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--badge-bg);border-radius:var(--radius-sm)}.highlight-card h4{font-size:.92rem;font-weight:600;color:var(--text-primary);margin-bottom:4px}.highlight-card p{font-size:.85rem;color:var(--text-tertiary);line-height:1.5}.topics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.topic-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:28px;transition:all var(--transition);box-shadow:var(--shadow-card);position:relative;overflow:hidden;display:flex;flex-direction:column}.topic-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent-gradient);opacity:0;transition:opacity var(--transition)}.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--accent-primary)}.topic-card:hover:before{opacity:1}.topic-icon{font-size:1.8rem;margin-bottom:14px;display:flex;align-items:center;justify-content:center;width:48px;height:48px;background:var(--badge-bg);border-radius:var(--radius-sm)}.topic-card h3{font-size:1.05rem;font-weight:600;color:var(--text-primary);margin-bottom:8px;line-height:1.3}.topic-card p{font-size:.88rem;color:var(--text-secondary);line-height:1.6;flex:1}.people-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;max-width:960px;margin:0 auto}.person-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:32px 20px 28px;text-align:center;transition:all var(--transition);box-shadow:var(--shadow-card);display:flex;flex-direction:column;align-items:center}.person-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.person-photo{width:110px;height:110px;border-radius:50%;margin:0 auto 18px;overflow:hidden;border:3px solid var(--border-color);transition:border-color var(--transition);background:var(--bg-tertiary)}.person-card:hover .person-photo{border-color:var(--accent-primary)}.person-photo img{width:100%;height:100%;object-fit:cover}.person-photo-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:600;color:var(--accent-primary);background:var(--badge-bg);letter-spacing:.02em}.person-name{font-size:1rem;font-weight:700;color:var(--text-primary);margin-bottom:2px}.person-tentative{font-size:.72rem;color:var(--accent-primary);font-weight:500;font-style:italic;margin-bottom:4px}.person-role{font-size:.82rem;color:var(--text-secondary);margin-bottom:2px;line-height:1.4}.person-affiliation{font-size:.8rem;color:var(--text-tertiary);line-height:1.4;font-weight:500}.person-link-wrapper{margin-top:auto;padding-top:16px}.person-link{display:inline-flex;align-items:center;gap:4px;font-size:.8rem;color:var(--accent-primary);font-weight:500;padding:6px 14px;border-radius:100px;background:var(--badge-bg);transition:all var(--transition)}.person-link:hover{color:var(--accent-secondary);background:#667eea2e}.timeline{max-width:700px;margin:0 auto;position:relative}.timeline:before{content:"";position:absolute;left:20px;top:0;bottom:0;width:2px;background:var(--timeline-line)}.timeline-item{display:flex;gap:24px;padding-bottom:32px;position:relative}.timeline-item:last-child{padding-bottom:0}.timeline-dot{width:14px;height:14px;border-radius:50%;background:var(--timeline-dot);flex-shrink:0;margin-top:6px;position:relative;z-index:1;left:14px;box-shadow:0 0 0 4px var(--bg-primary)}[data-theme=dark] .timeline-dot{box-shadow:0 0 0 4px var(--bg-secondary)}.timeline-dot.highlight{background:#ef4444;box-shadow:0 0 0 4px var(--bg-primary),0 0 12px #ef44444d}[data-theme=dark] .timeline-dot.highlight{box-shadow:0 0 0 4px var(--bg-secondary),0 0 12px #ef44444d}.timeline-content{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:20px 24px;flex:1;box-shadow:var(--shadow-sm);transition:all var(--transition)}.timeline-content:hover{box-shadow:var(--shadow-md);border-color:var(--accent-primary)}.timeline-date{font-family:var(--font-mono);font-size:.82rem;font-weight:500;color:var(--accent-primary);margin-bottom:4px}.timeline-label{font-size:1rem;font-weight:600;color:var(--text-primary)}.timeline-note{font-size:.83rem;color:var(--text-tertiary);margin-top:4px}.submission-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:52px 48px;box-shadow:var(--shadow-md);text-align:center;max-width:800px;margin:0 auto}.submission-card h3{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:16px}.submission-card>p{color:var(--text-secondary);line-height:1.7;margin-bottom:12px;font-size:1rem}.submission-details{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:32px 0;text-align:left}.submission-detail{background:var(--bg-secondary);border-radius:var(--radius-md);padding:20px;border:1px solid var(--border-light)}.submission-detail h4{font-size:.78rem;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}.submission-detail p{font-size:.95rem;color:var(--text-primary);font-weight:500}.btn-submit{display:inline-flex;align-items:center;gap:8px;padding:16px 40px;background:var(--accent-gradient);color:#fff;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition);text-decoration:none;margin-top:16px}.btn-submit:hover{transform:translateY(-2px);box-shadow:0 8px 25px #667eea59;color:#fff}.schedule-table{width:100%;max-width:800px;margin:0 auto;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm)}.schedule-row{display:grid;grid-template-columns:200px 1fr;border-bottom:1px solid var(--border-color);transition:background var(--transition);min-height:56px}.schedule-row:last-child{border-bottom:none}.schedule-row:hover{background:var(--bg-card-hover)}.schedule-row.break-row{background:var(--bg-secondary)}.schedule-row.break-row:hover{background:var(--bg-tertiary)}.schedule-time{font-family:var(--font-mono);font-size:.82rem;font-weight:500;color:var(--accent-primary);padding:16px 20px;border-right:1px solid var(--border-color);display:flex;align-items:center;white-space:nowrap}.schedule-event{padding:16px 20px;display:flex;flex-direction:column;justify-content:center}.schedule-event-title{font-weight:600;color:var(--text-primary);font-size:.92rem}.schedule-event-speaker{color:var(--text-tertiary);font-size:.82rem;margin-top:2px}.footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:56px 24px 40px;text-align:center}.footer-content{max-width:800px;margin:0 auto}.footer-brand{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:8px}.footer-brand span{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.footer-text{font-size:.88rem;color:var(--text-tertiary);margin-bottom:4px}.footer-links{display:flex;justify-content:center;gap:28px;margin-top:24px;flex-wrap:wrap}.footer-links a{font-size:.86rem;color:var(--text-secondary);font-weight:500;transition:color var(--transition)}.footer-links a:hover{color:var(--accent-primary)}.footer-divider{height:1px;background:var(--border-color);margin:28px 0}.footer-copyright{font-size:.82rem;color:var(--text-tertiary)}@media(max-width:768px){.nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--nav-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);flex-direction:column;padding:16px;border-bottom:1px solid var(--nav-border);box-shadow:var(--shadow-md)}.nav-links.open{display:flex}.mobile-menu-btn{display:block}.hero{padding:130px 20px 90px}.hero h1{font-size:1.8rem}.hero-meta{flex-direction:column;gap:12px}.about-content{grid-template-columns:1fr;gap:32px}.topics-grid{grid-template-columns:1fr}.people-grid{grid-template-columns:repeat(2,1fr);gap:16px}.person-card{padding:24px 16px}.person-photo{width:80px;height:80px}.section{padding:64px 20px}.submission-card{padding:32px 24px}.submission-details{grid-template-columns:1fr}.schedule-row{grid-template-columns:140px 1fr}.schedule-time{padding:12px 14px;font-size:.76rem}.schedule-event{padding:12px 14px}.timeline:before{left:14px}.timeline-dot{left:8px}}@media(max-width:480px){.hero-actions{flex-direction:column;align-items:center}.btn{width:100%;justify-content:center}.people-grid{grid-template-columns:1fr 1fr}.schedule-row{grid-template-columns:120px 1fr}}.fade-in{opacity:0;transform:translateY(20px);transition:opacity .6s ease-out,transform .6s ease-out}.fade-in.visible{opacity:1;transform:translateY(0)}