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h2{font-size:var(--font-size-2xl);font-weight:700;color:var(--text-color);margin-bottom:.75rem}.about-us__cta p{color:var(--text-secondary);margin-bottom:1.5rem;max-width:500px;margin-left:auto;margin-right:auto}.about-us__cta-btn{display:inline-block;padding:1rem 2rem;background:linear-gradient(135deg,var(--primary-color),var(--accent-orange));color:var(--primary-text);font-weight:600;text-decoration:none;border-radius:var(--radius-md);transition:transform .3s ease,box-shadow .3s ease}.about-us__cta-btn:hover{transform:translateY(-3px);box-shadow:0 10px 30px #ff80004d;color:var(--primary-text)}body.dark-mode .about-us__hero-gradient{background:linear-gradient(135deg,#00ffff1a,#22d3ee14,#06b6d41a)}body.dark-mode .about-us__highlight,body.dark-mode .about-us__stat-value{background:linear-gradient(135deg,var(--primary-color),var(--accent-cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}body.dark-mode .about-us__tab-btn.active,body.dark-mode 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var(--transition-base)}.faq__question:hover{background:var(--background-tertiary)}.faq__question-text{flex:1}.faq__toggle{font-size:var(--font-size-xl);font-weight:400;color:var(--primary-color);min-width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:2px solid var(--primary-color);background:transparent;border-radius:50%;transition:all var(--transition-base)}.faq__item--expanded .faq__toggle{background:var(--primary-color);color:var(--background-color)}.faq__answer{padding:0 var(--spacing-md);color:var(--text-color);font-size:var(--font-size-base);line-height:1.7;background:var(--background-color);border-top:0 solid var(--border-color);border-radius:0 0 var(--radius-md) var(--radius-md);display:grid;grid-template-rows:0fr;margin-top:0;opacity:0;transition:grid-template-rows .3s ease,opacity .3s ease,border-top-width .3s ease,margin-top .3s ease}.faq__answer>div{overflow:hidden;padding:0;transition:padding .3s ease}.faq__item--expanded 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.datasheets__subtitle{color:var(--text-secondary)!important}.datasheets__content{display:flex;flex-direction:column;gap:1.5rem}.datasheets__search{position:relative;width:100%}.datasheets__search-input{width:100%;padding:1rem 3rem 1rem 1rem;font-size:1rem;border:2px solid #f5f5f5!important;border-radius:8px;background:#f3f4f6!important;color:#000!important;transition:border-color .2s,box-shadow .2s}body.dark-mode .datasheets__search-input{background:#1a1a1a!important;border-color:#2a2a2a!important;color:#e0e0e0!important}.datasheets__search-input:focus{outline:none;box-shadow:none!important}body.dark-mode .datasheets__search-input:focus{border-color:#2a2a2a!important}.datasheets__search-input::placeholder{color:#6b7280}body.dark-mode .datasheets__search-input::placeholder{color:#6b7280}.datasheets__search-clear{position:absolute;right:.75rem;top:50%;transform:translateY(-50%);background:none;border:none;font-size:1.5rem;color:#4b5563;cursor:pointer;padding:.25rem 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New,monospace;color:#374151;word-break:break-all}body.dark-mode .datasheets__item-id{color:#9ca3af}.datasheets__item-actions{display:flex;align-items:center;gap:.5rem}.datasheets__download-btn{padding:.5rem 1rem;background:#ff8000!important;color:#fff!important;border:none;border-radius:6px;font-size:.9rem;font-weight:500;cursor:pointer;transition:background .2s,transform .1s}.datasheets__download-btn:hover{background:#e67300!important;transform:translateY(-1px)}.datasheets__download-btn:active{transform:translateY(0)}body.dark-mode .datasheets__download-btn{background:#0ff!important;color:#000!important}body.dark-mode .datasheets__download-btn:hover{background:#00d9d9!important}.datasheets__reference-btn{padding:.5rem 1rem;background:#28a745!important;color:#fff!important;border:none;border-radius:6px;font-size:.9rem;font-weight:500;cursor:pointer;transition:background .2s,transform 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collapseContent{0%{max-height:800px;opacity:1}to{max-height:0;opacity:0}}.datasheets__esc-hint{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000e6;color:#fff;padding:1rem 1.5rem;border-radius:8px;font-size:1.1rem;z-index:10002;pointer-events:none;animation:hintSlideInOut 4s ease-in-out forwards;text-align:center;box-shadow:0 4px 20px #00000080}body.dark-mode .datasheets__esc-hint{background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.datasheets__esc-hint kbd{background:#fff3;padding:.3rem .6rem;border-radius:4px;font-family:monospace;font-weight:700;margin:0 .25rem;font-size:1.1rem}.datasheets__arrow{position:fixed;bottom:calc(1rem + 50px);right:calc(1rem + 50px);width:150px;height:150px;pointer-events:none;z-index:10002}.datasheets__arrow:before{content:"";position:absolute;top:0;left:0;width:100px;height:2px;background:#ffffffe6;transform-origin:left;transform:rotate(45deg);box-shadow:0 2px 10px #0000004d}.datasheets__arrow:after{content:"↘";position:absolute;bottom:-20px;right:-20px;font-size:3rem;color:#ffffffe6;text-shadow:0 2px 10px rgba(0,0,0,.3)}.datasheets__close-btn{position:absolute;bottom:1rem;right:1rem;width:3rem;height:3rem;background:#000c;color:#fff;border:none;border-radius:50%;font-size:1.5rem;line-height:1;cursor:pointer;z-index:10001;transition:background .2s,transform .2s,filter .5s ease-out;display:flex;align-items:center;justify-content:center;animation:buttonHueCycle 1s ease-in-out forwards}@keyframes buttonHueCycle{0%{filter:hue-rotate(0deg) brightness(1) saturate(1)}25%{filter:hue-rotate(90deg) brightness(1.8) saturate(3)}50%{filter:hue-rotate(180deg) brightness(2) saturate(4)}75%{filter:hue-rotate(270deg) brightness(1.8) saturate(3)}to{filter:hue-rotate(360deg) brightness(1) saturate(1)}}.datasheets__close-btn:hover{background:#000000f2;transform:scale(1.1)}.datasheets__close-btn:active{transform:scale(.95)}body.dark-mode .datasheets__close-btn{background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}body.dark-mode .datasheets__close-btn:hover{background:#ffffff40}@keyframes hintSlideInOut{0%{opacity:0;transform:translate(-50%,-50%) scale(.8)}10%{opacity:1;transform:translate(-50%,-50%) scale(1)}85%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(.8)}}.datasheets__pdf-viewer{width:100%;height:800px;border:none;display:block}.datasheets__item-content--enlarged .datasheets__pdf-viewer{width:100%;height:100vh;flex:1}@media(max-width:768px){.datasheets{padding:1rem}.datasheets__title{font-size:2rem}.datasheets__item-header{flex-direction:column;align-items:flex-start;flex-wrap:wrap}.datasheets__item-actions{width:100%;justify-content:space-between;flex-wrap:wrap}.datasheets__download-btn,.datasheets__enlarge-btn{flex:1;min-width:120px}.datasheets__pdf-viewer{height:500px}}@media(prefers-color-scheme:dark){.datasheets__title,.datasheets__item-name{color:var(--text-primary-dark, #f5f5f5)}.datasheets__subtitle,.datasheets__results-count,.datasheets__loading,.datasheets__empty{color:var(--text-secondary-dark, #b0b0b0)}.datasheets__search-input{background:var(--bg-card-dark, #1e1e1e);border-color:var(--border-color-dark, #404040);color:var(--text-primary-dark, #f5f5f5)}.datasheets__search-input::placeholder{color:var(--text-secondary-dark, #666)}.datasheets__search-clear{color:var(--text-secondary-dark, 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.datasheets__loading-more,body.dark-mode .datasheets__empty{color:#b0b0b0}body.dark-mode .datasheets__search-input{background:#1e1e1e;border-color:#404040;color:#f5f5f5}body.dark-mode .datasheets__search-input::placeholder{color:#666}body.dark-mode .datasheets__search-clear{color:#b0b0b0}body.dark-mode .datasheets__search-clear:hover{color:#f5f5f5}body.dark-mode .datasheets__item{background:#1e1e1e;border-color:#404040}body.dark-mode .datasheets__item:hover{box-shadow:0 4px 12px #0006}body.dark-mode .datasheets__item-header:hover{background:#252525}body.dark-mode .datasheets__item-content{border-top-color:#404040}body.dark-mode .datasheets__item-content--enlarged{background:#1e1e1e}body.dark-mode .datasheets__enlarge-btn{background:#5a6268}body.dark-mode .datasheets__enlarge-btn:hover{background:#4a5258}body.dark-mode .datasheets__expand-btn{color:#b0b0b0}body.dark-mode .datasheets__expand-btn:hover{color:#f5f5f5}.datasheet-detail{min-height:100vh;background:var(--background-color, 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#ffffff)}body.dark-mode .datasheet-detail__viewer{background:var(--background-color, #0a0a0a)}.datasheet-detail__pdf{width:100%;height:100%;border:none}@media(max-width:768px){.datasheet-detail__header{padding:1rem}.datasheet-detail__title{font-size:1.5rem}.datasheet-detail__meta{flex-direction:column;gap:.5rem}.datasheet-detail__viewer{height:calc(100vh - 300px)}}.tutorials{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.tutorials__loading,.tutorials__error{text-align:center;padding:4rem;color:var(--text-secondary)}.tutorials__hero{text-align:center;padding:2rem 0 1rem}.tutorials__title{font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--text-color);margin-bottom:.75rem}.tutorials__subtitle{font-size:var(--font-size-lg);color:var(--text-secondary);max-width:600px;margin:0 auto}.tutorials__controls{background:var(--background-secondary);border:1px solid 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#ff6b0f26}.tutorials__search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);font-size:1.25rem;pointer-events:none}.tutorials__featured{margin-bottom:var(--spacing-xxl)}.tutorials__section-title{font-size:var(--font-size-xl);font-weight:700;color:var(--text-color);margin-bottom:var(--spacing-lg)}.tutorials__featured-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-lg)}.tutorials__featured-card{display:block;padding:1.5rem;background:linear-gradient(135deg,#ff6b0f14,#ff6b0f08);border:2px solid var(--primary-color);border-radius:var(--radius-lg);text-decoration:none;transition:transform .2s ease,box-shadow .2s ease}.tutorials__featured-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px #ff6b0f26}.tutorials__featured-category{display:inline-block;font-size:var(--font-size-sm);color:var(--text-secondary);margin-bottom:.5rem}.tutorials__featured-title{font-size:var(--font-size-lg);font-weight:700;color:var(--text-color);margin-bottom:.5rem}.tutorials__featured-desc{font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.5;margin-bottom:1rem}.tutorials__featured-meta{display:flex;align-items:center;gap:1rem}.tutorials__filters{display:flex;flex-wrap:wrap;align-items:center;gap:var(--spacing-md)}.tutorials__filter-group{display:flex;flex-direction:column;gap:.25rem}.tutorials__filter-label{font-size:var(--font-size-xs);font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.tutorials__filter-select{padding:.5rem 2rem .5rem .75rem;font-size:var(--font-size-sm);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--background-primary);color:var(--text-color);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .5rem center;transition:border-color .2s ease,background-color .2s ease}body.dark-mode .tutorials__filter-select{background-color:#1a1a1a;border-color:var(--border-color);color:var(--text-color);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23e0e0e0' d='M6 8L1 3h10z'/%3E%3C/svg%3E")}body.dark-mode .tutorials__filter-select:hover{border-color:var(--text-secondary)}body.dark-mode .tutorials__filter-select:focus{border-color:var(--primary-color);box-shadow:0 0 0 2px #ff6b0f26}body.dark-mode .tutorials__filter-select 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