:root{--primary-color: #3a86ff;--secondary-color: #8338ec;--accent-color: #ff006e;--light-color: #f8f9fa;--dark-color: #212529;--text-color: #333;--border-radius: 12px;--box-shadow: 0 4px 6px rgba(0, 0, 0, .1)}html,body{height:100%}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;color:var(--text-color);line-height:1.6;display:flex;flex-direction:column;min-height:100vh}header{background-color:var(--light-color);border-bottom:1px solid rgba(0,0,0,.1)}.logo i{color:var(--primary-color)}.logo+h1{color:#0284c7}main{flex:1}.greeting-container{max-width:600px;margin:0 auto;margin-top:7rem;padding:20px;background-color:var(--light-color);border-radius:var(--border-radius);box-shadow:var(--box-shadow)}.prompts-section{margin-top:3rem}.card{background-color:#fff;border:2px solid #e9ecef;border-radius:15px;box-shadow:var(--box-shadow);transition:all .3s ease;cursor:pointer;position:relative}.card:hover{transform:translateY(-5px);box-shadow:0 8px 25px #00000026;border-color:var(--primary-color)}.prompt-icon i{color:var(--primary-color)}.input-section{margin-top:5rem}.input-container{max-width:400px}.form-select{border-radius:var(--border-radius);border:1px solid #dee2e6;padding:12px 16px;box-shadow:var(--box-shadow)}.knowledge-base-buttons{display:flex;flex-direction:column;gap:15px;max-width:500px;margin:0 auto}.btn-knowledge-base{background-color:#fff;color:var(--primary-color);border:2px solid var(--primary-color);border-radius:12px;padding:15px 25px;font-weight:500;transition:all .3s ease;box-shadow:var(--box-shadow);text-align:left;width:100%;display:flex;align-items:center;justify-content:flex-start}.btn-knowledge-base:hover{background-color:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:0 6px 12px #00000026}.btn-knowledge-base.active{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.btn-knowledge-base.active:hover{background-color:var(--secondary-color);border-color:var(--secondary-color)}.knowledge-base-buttons-horizontal{display:flex;flex-direction:row;gap:15px;max-width:800px;margin:0 auto;justify-content:center;flex-wrap:wrap}.btn-knowledge-base-horizontal{background-color:#fff;color:var(--primary-color);border:2px solid var(--primary-color);border-radius:12px;padding:15px 20px;font-weight:500;transition:all .3s ease;box-shadow:var(--box-shadow);text-align:center;flex:1;min-width:300px;max-width:400px;display:flex;align-items:center;justify-content:center;white-space:normal;line-height:1.3;min-height:80px}.btn-knowledge-base-horizontal:hover{background-color:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:0 6px 12px #00000026}.btn-knowledge-base-horizontal.active{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.btn-knowledge-base-horizontal.active:hover{background-color:var(--secondary-color);border-color:var(--secondary-color)}.knowledge-base-cards{display:flex;flex-direction:row;gap:15px;max-width:1400px;margin:0 auto;justify-content:center;flex-wrap:nowrap;overflow-x:auto;padding:10px 0}.knowledge-base-card{background-color:#fff;border:2px solid #e9ecef;border-radius:15px;padding:20px 15px 0;text-align:center;transition:all .3s ease;box-shadow:var(--box-shadow);flex:0 0 280px;min-width:280px;max-width:280px;cursor:pointer;position:relative;display:flex;flex-direction:column;min-height:260px}.knowledge-base-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px #00000026;border-color:var(--primary-color)}.knowledge-base-card.active{border-color:var(--primary-color);background-color:#f8f9ff;box-shadow:0 6px 20px #3a86ff33}.knowledge-base-card .card-icon{margin-bottom:20px}.knowledge-base-card .card-icon i{font-size:3rem;color:var(--primary-color);transition:color .3s ease}.knowledge-base-card:hover .card-icon i{color:var(--secondary-color)}.knowledge-base-card.active .card-icon i{color:var(--primary-color)}.knowledge-base-card .card-content{display:flex;flex-direction:column;gap:15px;flex:1}.knowledge-base-card .card-title{font-size:1.1rem;font-weight:600;color:var(--text-color);margin:0;line-height:1.3}.knowledge-base-card .card-footer{margin-top:auto;padding:20px 0;border-top:1px solid #e9ecef}.knowledge-base-link{color:var(--primary-color);text-decoration:none;font-weight:500;transition:all .3s ease;display:inline-flex;align-items:center;padding:8px 16px;border-radius:8px;background-color:transparent}.knowledge-base-link:hover{color:var(--secondary-color);background-color:#f8f9ff;text-decoration:none;transform:translateY(-1px)}.knowledge-base-card.active .card-footer{border-top-color:var(--primary-color)}.knowledge-base-card.active .knowledge-base-link{color:var(--primary-color);background-color:#f8f9ff}footer{background-color:var(--light-color);border-top:1px solid rgba(0,0,0,.1);margin-top:auto}.footer-info{max-width:none;margin:0;padding:0}.footer-info p.small{font-size:.875rem;line-height:1.5;color:#6c757d}.file-buttons .btn{border:none;background:none;color:var(--primary-color);text-decoration:underline;padding:6px 0;font-size:.875rem;border-radius:0;transition:color .2s ease}.file-buttons .btn:hover{color:var(--secondary-color);background:none;text-decoration:underline}.modal-content{border-radius:var(--border-radius);border:none;box-shadow:0 10px 25px #0003}.modal-header{border-bottom:1px solid #dee2e6;background-color:var(--light-color);border-radius:var(--border-radius) var(--border-radius) 0 0}.modal-footer{border-top:1px solid #dee2e6}.file-content{max-height:70vh;overflow-y:auto}.document-content{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:#333}.document-content h2.gost-header-level2{font-size:1.6rem;font-weight:700;color:#2c3e50;margin-top:2.5rem;margin-bottom:1.5rem;padding-bottom:.5rem;border-bottom:3px solid var(--primary-color)}.document-content h2.gost-header-level2:first-child{margin-top:0}.document-content h3.gost-header-level3{font-size:1.4rem;font-weight:600;color:#2c3e50;margin-top:2rem;margin-bottom:1rem;padding-bottom:.3rem;border-bottom:2px solid var(--secondary-color)}.document-content h4.gost-header-level4{font-size:1.2rem;font-weight:600;color:#34495e;margin-top:1.5rem;margin-bottom:.8rem;padding-left:.5rem;border-left:4px solid var(--accent-color)}.document-content p{margin-bottom:1rem;text-align:justify}.document-content ul{margin-bottom:1.5rem;padding-left:1.5rem}.document-content li{margin-bottom:.5rem;position:relative}.document-content li:before{content:"•";color:var(--primary-color);font-weight:700;display:inline-block;width:1em;margin-left:-1em}.document-content ul ul{margin-top:.5rem;margin-bottom:.5rem;padding-left:1.5rem}.document-content ul ul li:before{content:"◦";color:var(--secondary-color)}.support-level{background-color:#f8f9fa;border-radius:8px;padding:1rem;margin:1rem 0;border-left:4px solid var(--primary-color)}.contact-info{background-color:#e8f4fd;border-radius:8px;padding:1.5rem;margin:1rem 0;border:1px solid #b8daff}.contact-info p{margin-bottom:.5rem}.contact-info strong{color:#2c3e50}.document-content a{color:var(--primary-color);text-decoration:none;transition:color .2s ease}.document-content a:hover{color:var(--secondary-color);text-decoration:underline}.tech-stack-content{padding:1rem 0}.tech-category{margin-bottom:2rem;padding:1.5rem;background:linear-gradient(135deg,#f8f9fa,#e9ecef);border-radius:12px;border:1px solid #e9ecef;transition:transform .2s ease,box-shadow .2s ease}.tech-category:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.tech-item{display:flex;flex-direction:column;gap:.8rem}.tech-label{font-weight:600;color:#2c3e50;font-size:1.1rem;margin-bottom:.5rem;display:block}.tech-blockquote{background:#fff;border-left:4px solid var(--primary-color);padding:1rem 1.5rem;margin:.5rem 0;border-radius:8px;box-shadow:0 2px 4px #0000000d;font-family:Courier New,monospace;font-size:1rem;color:#2c3e50;transition:all .2s ease}.tech-blockquote:hover{background:#f8f9ff;border-left-color:var(--secondary-color);transform:translate(4px)}.tech-blockquote p{margin:0;font-weight:500}.tech-libraries .tech-blockquote{border-left-color:var(--accent-color);margin:.8rem 0}.tech-libraries .tech-blockquote:hover{border-left-color:var(--secondary-color)}.file-item{border:none;border-radius:8px;margin-bottom:8px;transition:all .2s ease;padding:12px 15px}.file-item:hover{background-color:#f8f9fa;transform:translate(5px)}.file-item .file-icon{color:var(--primary-color);margin-right:10px}.file-item .file-name{font-weight:500;flex-grow:1}.file-item .file-size{color:#6c757d;font-size:.875rem}.file-item .download-btn{color:var(--primary-color);transition:color .2s ease}.file-item .download-btn:hover{color:var(--secondary-color)}@media (max-width: 768px){.greeting-container{padding:15px}.card{margin-bottom:20px}.prompts-section{margin-top:3rem}.input-section{margin-top:2rem}.file-buttons .btn{display:block;width:100%;margin-bottom:10px;margin-right:0!important}.knowledge-base-buttons{max-width:100%;gap:10px}.btn-knowledge-base{padding:12px 20px;font-size:.9rem}.knowledge-base-buttons-horizontal{flex-direction:column;gap:10px;max-width:100%}.btn-knowledge-base-horizontal{min-width:100%;max-width:100%;padding:15px 20px;font-size:.9rem;white-space:normal;text-align:center;min-height:70px;line-height:1.2}.knowledge-base-cards{flex-direction:row;gap:10px;max-width:100%;overflow-x:auto;padding:5px 0;justify-content:flex-start}.knowledge-base-card{flex:0 0 250px;min-width:250px;max-width:250px;padding:15px 10px 0;min-height:240px}.knowledge-base-card .card-icon i{font-size:2.5rem}.knowledge-base-card .card-title{font-size:1rem}.knowledge-base-card .card-footer{padding:15px 0}.knowledge-base-link{padding:6px 12px;font-size:.9rem}.document-content h2.gost-header-level2{font-size:1.4rem}.document-content h3.gost-header-level3{font-size:1.2rem}.document-content h4.gost-header-level4{font-size:1.1rem}.file-content{max-height:60vh}.support-level,.contact-info{padding:.8rem}.tech-category{padding:1rem;margin-bottom:1.5rem}.tech-blockquote{padding:.8rem 1rem;font-size:.9rem}.tech-label{font-size:1rem}.tech-item{gap:.5rem}}