:root{--primary-color:#0066cc;--secondary-color:#ff6b35;--accent-color:#00d4aa;--dark-bg:#1a1a2e;--darker-bg:#16213e;--light-bg:#f8f9fa;--text-primary:#333;--text-secondary:#666;--text-light:#ffffff;--border-color:#e0e0e0;--shadow:0 4px 6px rgba(0,0,0,0.1);--shadow-hover:0 8px 25px rgba(0,0,0,0.15)}*{margin:0;padding:0;box-sizing:border-box}:focus-visible{outline:3px solid var(--accent-color);outline-offset:3px}[role=button]:focus-visible,a:focus-visible,button:focus-visible{border-radius:4px}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--text-primary);background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}.skip-link{position:absolute;top:-200px;left:50%;transform:translateX(-50%);background:var(--accent-color);color:var(--dark-bg);padding:.75rem 1.25rem;border-radius:999px;font-weight:600;z-index:1050;transition:top .2s ease}.skip-link:focus-visible{top:16px}.header{background:rgba(26,26,46,.95);backdrop-filter:blur(10px);position:fixed;top:0;width:100%;z-index:1000;padding:1rem 0;box-shadow:var(--shadow)}.nav-container{max-width:1200px;margin:0 auto;justify-content:space-between;padding:0 2rem;position:relative}.logo,.nav-container{display:flex;align-items:center}.logo{font-size:1.8rem;font-weight:700;color:var(--accent-color);text-decoration:none;gap:.5rem}.logo:before{content:"⚛️";font-size:2rem}.nav-menu{display:flex;list-style:none;gap:2rem}.nav-link{color:var(--text-light);text-decoration:none;font-weight:500;transition:color .3s ease;position:relative}.nav-link:hover{color:var(--accent-color)}.nav-link:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:var(--accent-color);transition:width .3s ease}.nav-link--active:after,.nav-link:hover:after{width:100%}.nav-link--active{color:var(--accent-color)}.nav-link--legacy{opacity:.78;font-size:.95rem}.nav-link--external{padding-right:.5rem}.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border:2px solid var(--accent-color);border-radius:8px;background:transparent;cursor:pointer;transition:background .3s ease,border-color .3s ease}.nav-toggle:focus-visible{outline:3px solid var(--accent-color);outline-offset:2px}.nav-toggle:hover{background:rgba(0,212,170,.1);border-color:var(--primary-color)}.nav-toggle__bar{display:block;width:22px;height:2px;background:var(--text-light);margin:3px 0;transition:transform .3s ease,opacity .3s ease}.nav-menu.nav-menu--open{display:flex}.main-content{margin-top:80px;min-height:calc(100vh - 80px)}.hero{background:linear-gradient(rgba(26,26,46,.8),rgba(22,33,62,.8)),url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 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ease;box-shadow:var(--shadow)}.cta-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}.modules-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem;padding:4rem 2rem;max-width:1200px;margin:0 auto}.module-card{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-radius:15px;padding:2rem;box-shadow:var(--shadow);transition:transform .3s ease,box-shadow .3s ease;border:1px solid rgba(255,255,255,.2)}.module-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}.module-card h3{color:var(--primary-color);margin-bottom:1rem;font-size:1.5rem;display:flex;align-items:center;gap:.5rem}.module-card p{color:var(--text-secondary);margin-bottom:1.5rem;line-height:1.7}.module-link{color:var(--primary-color);text-decoration:none;font-weight:700;display:inline-flex;align-items:center;gap:.5rem;transition:color .3s ease}.module-link:hover{color:var(--secondary-color)}.module-link:after{content:"→";transition:transform .3s ease}.module-link:hover:after{transform:translateX(5px)}.content-page{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-radius:15px;padding:3rem;box-shadow:var(--shadow);max-width:1200px;margin:2rem auto}.content-page h1{color:var(--primary-color);margin-bottom:2rem;font-size:2.5rem;text-align:center}.content-page h2{color:var(--primary-color);margin:2rem 0 1rem;font-size:1.8rem;border-bottom:2px solid var(--accent-color);padding-bottom:.5rem}.content-page h3{color:var(--text-primary);margin:1.5rem 0 1rem;font-size:1.3rem}.content-page p{margin-bottom:1rem;line-height:1.8;text-align:justify}.content-page ol,.content-page ul{margin:1rem 0 1rem 2rem}.content-page li{margin-bottom:.5rem;line-height:1.6}.timeline{position:relative;padding:2rem 0}.timeline:before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;background:var(--accent-color);transform:translateX(-50%)}.timeline-item{position:relative;margin:2rem 0;display:flex;align-items:center}.timeline-item:nth-child(odd){flex-direction:row-reverse}.timeline-content{background:rgba(255,255,255,.9);padding:1.5rem;border-radius:10px;box-shadow:var(--shadow);width:45%;margin:0 2rem}.timeline-year{background:var(--primary-color);color:white;padding:.5rem 1rem;border-radius:20px;font-weight:700;position:absolute;left:50%;transform:translateX(-50%);z-index:10}.timeline-controls{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin:1rem 0 2rem}.load-more-button{background:var(--primary-color);color:#fff;border:none;border-radius:25px;padding:.75rem 1.75rem;font-size:1rem;font-weight:600;cursor:pointer;transition:background .3s ease,transform .3s ease}.load-more-button:focus-visible:not([disabled]),.load-more-button:hover:not([disabled]){background:var(--secondary-color);transform:translateY(-1px);outline:none}.load-more-button[disabled]{background:rgba(255,255,255,.3);color:rgba(255,255,255,.6);cursor:not-allowed}.load-more-button--ghost{background:transparent;border:1px solid var(--primary-color);color:var(--dark-bg)}.load-more-button--ghost:hover{background:rgba(74,163,255,.1)}.timeline-status{color:var(--text-secondary);font-size:.9rem}.timeline-empty{margin:1.5rem 0;padding:1rem 1.5rem;border-left:4px solid var(--secondary-color);border-radius:8px;background:rgba(255,107,53,.1);color:var(--dark-bg)}.timeline-sentinel{width:100%;height:1px}.timeline-filters{margin:32px 0 16px;padding:16px;background:#f5f9ff;border:1px solid #dde7f5;border-radius:8px;display:grid;gap:12px}.timeline-filters .filter-group{display:flex;flex-direction:column;gap:6px}.timeline-filters .filter-group label{font-weight:600;color:#1f2933}.timeline-filters input[type=number],.timeline-filters input[type=search]{padding:10px 12px;border:1px solid #c9d6ec;border-radius:6px;font-size:14px}.timeline-filters .filter-actions{display:flex;gap:12px;flex-wrap:wrap}.timeline-filters .timeline-status{margin:0;color:#4b5563}.timeline-skeleton{display:grid;gap:16px;margin:1rem 0 2rem}.skeleton-card{background:rgba(255,255,255,.7);border-radius:10px;padding:1rem 1.25rem;box-shadow:var(--shadow);animation:fadeInUp .4s ease}.skeleton-line{height:12px;margin:8px 0;border-radius:999px;background:linear-gradient(90deg,#eceff4,#f6f9fc 50%,#eceff4);background-size:200% 100%;animation:shimmer 1.4s ease infinite}.skeleton-line--short{width:28%}.skeleton-line--wide{width:90%}.link-card,.paper-card,.timeline-item{animation:fadeInUp .3s ease}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.paper-card{background:rgba(255,255,255,.9);border-radius:10px;padding:1.5rem;margin:1rem 0;box-shadow:var(--shadow);transition:transform .3s ease}.paper-card:hover{transform:translateY(-2px)}.paper-list .paper-card{height:100%}.paper-list{display:grid;gap:1.25rem;margin:1rem 0 1.5rem}.paper-link{display:inline-block;margin-top:.75rem;color:var(--primary-color);font-weight:600;text-decoration:none;transition:color .3s ease}.paper-link:focus-visible,.paper-link:hover{color:var(--secondary-color);outline:none}.paper-filters{display:flex;flex-direction:column;gap:12px;margin-bottom:12px}.paper-filter-row{display:flex;flex-wrap:wrap;gap:12px}.paper-filter{display:flex;flex-direction:column;gap:6px;min-width:160px}.paper-filter input,.paper-filter select{padding:10px 12px;border:1px solid #c9d6ec;border-radius:6px;font-size:14px}.paper-tags{display:flex;flex-direction:column;gap:8px}.paper-tags-title{font-weight:600}.paper-tags-grid{display:flex;flex-wrap:wrap;gap:8px}.paper-tag-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:16px;border:1px solid #cbd5e1;background:#f8fafc;font-size:14px;cursor:pointer}.paper-tag-chip input{accent-color:var(--primary-color)}.paper-filter-actions{display:flex;align-items:center;gap:12px}.paper-toggle{background:none;border:none;color:#2563eb;cursor:pointer;padding:0 4px;font-size:14px}.paper-toggle:hover{text-decoration:underline}@media (max-width:900px){.links-filter-actions,.links-filters,.paper-filter-actions,.paper-filter-row,.timeline-filters .filter-actions{flex-direction:column;align-items:stretch}.paper-filters,.timeline-filters{gap:16px}.load-more-button,.load-more-button--ghost{width:100%;text-align:center}}.paper-search{width:100%;max-width:500px;padding:12px 20px;margin:20px 0;border:2px solid var(--border-color);border-radius:25px;font-size:16px;outline:none;transition:border-color .3s ease}.paper-search:focus{border-color:var(--primary-color)}.paper-error{background:rgba(255,204,204,.6);border-left:4px solid var(--secondary-color);padding:1rem 1.5rem;border-radius:8px;margin:1rem 0;color:var(--dark-bg)}.paper-title{color:var(--primary-color);font-weight:700;margin-bottom:.5rem}.paper-authors{color:var(--text-secondary);font-style:italic;margin-bottom:.5rem}.paper-journal{color:var(--text-secondary);font-size:.9rem}.tech-comparison{overflow-x:auto;margin:2rem 0}.tech-table{width:100%;border-collapse:collapse;background:rgba(255,255,255,.9);border-radius:10px;overflow:hidden;box-shadow:var(--shadow)}.tech-table th{background:var(--primary-color);color:white;padding:1rem;text-align:left}.tech-table td{padding:1rem;border-bottom:1px solid var(--border-color)}.tech-table tr:hover{background:rgba(0,212,170,.1)}.company-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin:2rem 0}.company-card{background:rgba(255,255,255,.9);border-radius:10px;padding:2rem;box-shadow:var(--shadow);transition:transform .3s ease}.company-card:hover{transform:translateY(-3px)}.company-name{color:var(--primary-color);font-size:1.3rem;font-weight:700;margin-bottom:1rem}.links-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin:2rem 0}.link-card{background:rgba(255,255,255,.9);border-radius:10px;padding:1.5rem;box-shadow:var(--shadow);transition:transform .3s ease;text-decoration:none;color:inherit}.link-card:hover{transform:translateY(-2px);text-decoration:none}.link-title{color:var(--primary-color);font-weight:700;margin-bottom:.5rem}.link-description{color:var(--text-secondary);font-size:.9rem}.links-filters{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px}.links-filter{display:flex;flex-direction:column;gap:6px;min-width:140px;font-size:14px}.links-filter select{padding:10px 12px;border:1px solid #c9d6ec;border-radius:6px}.links-filter-actions{display:flex;align-items:center;gap:12px;margin-top:8px}.links-filter-active{color:#4b5563;font-size:14px}.links-section-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.link-collapse{padding:6px 12px;border-radius:6px;border:1px solid #cbd5e1;background:#f8fafc;cursor:pointer}.link-collapse:hover{background:#eef2f7}.link-meta{margin-top:6px;font-size:12px;color:#6b7280}.links-section{margin:2.5rem 0}.links-meta{margin:1.5rem 0;padding:1rem 1.5rem;border-radius:10px;background:rgba(0,102,204,.12);color:var(--dark-bg)}.links-search-wrapper{margin:1.5rem 0 .5rem}.links-controls{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;margin:2rem 0}.links-status{color:var(--text-secondary);font-size:.9rem}.links-empty{margin:1.5rem 0;padding:1rem 1.5rem;border-left:4px solid var(--secondary-color);border-radius:8px;background:rgba(255,107,53,.08);color:var(--dark-bg)}.links-sentinel{width:100%;height:1px}.back-button{display:inline-block;background:var(--primary-color);color:white;padding:.8rem 1.5rem;text-decoration:none;border-radius:25px;margin-bottom:2rem;transition:background .3s ease}.back-button:hover{background:var(--secondary-color)}.footer{margin-top:4rem;padding:3rem 2rem;background:rgba(26,26,46,.95);color:var(--text-light)}.footer__inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:flex-start;gap:2rem;flex-wrap:wrap}.footer__logo{font-size:1.5rem;font-weight:600;color:var(--accent-color);text-decoration:none}.footer__tagline{margin-top:.5rem;color:rgba(255,255,255,.8);max-width:420px}.footer__nav{margin-left:auto}.footer__links{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.75rem 1.5rem}.footer__links a{color:rgba(255,255,255,.85);text-decoration:none;transition:color .3s ease}.footer__links a:focus-visible,.footer__links a:hover{color:var(--accent-color);outline:none}.footer__note{margin-top:2rem;text-align:center;color:rgba(255,255,255,.7);font-size:.9rem}@media (max-width:991px){.nav-toggle{display:inline-flex}.nav-menu{position:absolute;top:calc(100% + 12px);right:2rem;flex-direction:column;gap:1rem;background:rgba(22,33,62,.98);padding:1.25rem 1.5rem;border-radius:12px;box-shadow:var(--shadow-hover);width:min(260px,calc(100vw - 3rem));display:none;z-index:1000}.nav-menu li{width:100%}.nav-menu a{width:100%;padding:.25rem 0}}@media (max-width:768px){.hero h1{font-size:2.5rem}.hero p{font-size:1.1rem}.modules-grid{grid-template-columns:1fr;padding:2rem 1rem}.content-page{margin:1rem;padding:2rem 1.5rem}.timeline:before{left:20px}.timeline-item{flex-direction:column;align-items:flex-start;padding-left:50px}.timeline-content{width:100%;margin:0}.timeline-year{left:20px;transform:none}.links-controls,.timeline-controls{flex-direction:column;align-items:stretch;gap:.75rem}.footer__inner{flex-direction:column;align-items:flex-start}.nav-menu{right:1rem;left:1rem;width:auto}.footer__nav{margin-left:0;width:100%}.footer__links{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.footer__note{margin-top:1.5rem}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.module-card{animation:fadeInUp .6s ease forwards}.module-card:first-child{animation-delay:.1s}.module-card:nth-child(2){animation-delay:.2s}.module-card:nth-child(3){animation-delay:.3s}.module-card:nth-child(4){animation-delay:.4s}.module-card:nth-child(5){animation-delay:.5s}.module-card:nth-child(6){animation-delay:.6s}.module-card:nth-child(7){animation-delay:.7s}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:rgba(255,255,255,.1)}::-webkit-scrollbar-thumb{background:var(--accent-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--primary-color)}.nav-logout{background:none;border:none;color:inherit;font:inherit;cursor:pointer;padding:0}.nav-logout:focus,.nav-logout:hover{color:var(--accent-color)}