:root{--bg:#f6f7fb;--card-bg:#ffffff;--border:#e4e6ee;--accent:#6974db;--accent-soft:rgba(75, 107, 251, 0.1);--text:#1f2937;--muted:#6b7280;--radius:14px}*{box-sizing:border-box}body,html{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;margin:0;background:var(--bg);color:var(--text);line-height:1.45;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;padding:0 0 3rem;background:#f6f7fb;color:#1f2937}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:var(--max-width);margin:0 auto}header{background:linear-gradient(180deg,rgba(255,255,255,.8),rgba(255,255,255,.65));backdrop-filter:blur(6px);border-bottom:1px solid rgba(15,23,36,.05)}.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.8rem 20px}.brand{display:flex;align-items:center;gap:.6rem;font-weight:700}.brand 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auto}.row{display:flex;gap:1rem;flex-wrap:wrap}.spacer{flex:1 1 auto}header a{font-size:20px;color:#6366f1;text-decoration:none;background-image:linear-gradient(var(--accent-soft),var(--accent-soft));background-repeat:no-repeat;background-size:100% .35em;background-position:0 88%}#mainNav{display:flex;display:flex;gap:24px;list-style:none;padding:0;margin:0}#mainNav li{position:relative;margin-right:0}#mainNav a{text-decoration:none;display:flex;align-items:center}#mainNav svg{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-size:15px;font-weight:500}.nav-icon{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}#mainNav a:hover{color:#764ba2;text-decoration:none}.brand img{width:350px}a:focus,button:focus{outline:rgba(37,99,235,.15) solid 3px;outline-offset:2px}.content_block{display:flex;justify-content:center;padding:24px 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auto;text-align:center}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;font-size:18px;font-weight:500;line-height:1;background:#fff;color:#222;border:1px solid #d6d6d6;cursor:pointer;user-select:none;transition:background .2s,border-color .2s,box-shadow .2s,transform .1s}.btn:hover{background:#f6f7f8;border-color:#cfcfcf;box-shadow:0 4px 10px rgba(0,0,0,.08)}.btn:active{transform:translateY(1px);box-shadow:0 2px 6px rgba(0,0,0,.1)}.btn:focus-visible{outline:0;box-shadow:0 0 0 3px rgba(100,150,255,.35)}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.error-title{text-align:center;font-weight:300;font-size:1.5rem;color:#666;margin-bottom:2rem;letter-spacing:.5px}.error-container{max-width:500px;margin:0 auto;padding:3rem 2rem;background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.05)}.error-code{text-align:center;margin-bottom:2rem}.error-number{font-size:6rem;font-weight:300;color:#e0e0e0;line-height:1;display:inline-block}.error-content{text-align:center}.error-container .error-description,.error-container .error-message{color:#666;font-size:1.1rem;line-height:1.6;margin-bottom:2rem;font-weight:300}.error-actions{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.error-button{display:inline-block;padding:14px;font-size:16px;font-weight:600;color:#fff;background:linear-gradient(135deg,#667eea 0,#764ba2 100%);border:none;border-radius:8px;cursor:pointer;transition:.3s;margin-top:10px}.error-button:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(102,126,234,.4)}.error-button--secondary{background:0 0;color:#333}.error-button--secondary:hover{background:rgba(0,0,0,.05);color:#000}@media (max-width:576px){.error-container{padding:2rem 1rem;margin:0 1rem}.error-number{font-size:4rem}.error-actions{flex-direction:column;align-items:center}.error-button{width:100%;max-width:250px;text-align:center}}.site-footer{padding:2rem 0;border-top:none;margin-top:auto;font-size:.875rem}.site-footer__container{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1.5rem;max-width:1200px;margin:0 auto;padding:0 1rem}.site-footer__nav{display:flex;flex-wrap:wrap;gap:1.25rem;color:var(--muted,#6b7280)}.site-footer__link{color:inherit;text-decoration:none;transition:color .2s}.site-footer__link:hover{color:#6366f1}.site-footer__info{display:flex;flex-direction:column;align-items:flex-end;gap:.5rem;min-width:200px}.site-footer__copyright{color:var(--muted,#6b7280)}.site-footer__heart{color:#6366f1;display:flex;align-items:center;gap:.25rem}.site-footer__icon{width:14px;height:14px;fill:currentColor}.text-container{margin:30px auto;max-width:1200px;padding:15px 0;background:rgba(255,255,255,.95);box-shadow:0 20px 60px 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blockquote{border-left:3px solid var(--link-color);padding-left:1.25rem;color:var(--text-muted);font-style:italic}.text-block code{font-family:Consolas,Monaco,'Andale Mono',monospace;background-color:#f3f4f6;padding:.125rem .25rem;border-radius:.25rem;font-size:.95em}.text-block pre{background-color:#f9fafb;padding:1rem;border-radius:.5rem;overflow-x:auto;font-family:Consolas,Monaco,monospace;font-size:.95rem}.text-block mark{background-color:#fef3c7;color:#92400e;padding:0 .25rem;border-radius:.25rem}.text-block ul{margin:0 0 23px 15px;padding:0 0 0 40px}.text-block ul>li{position:relative}.text-block ul>li:before{content:'';position:absolute;top:12px;left:-23px;width:11px;height:11px;border:2px solid #6974db;border-radius:50%}.text-block li{margin:0 0 9px;list-style:none}.text-block ol{counter-reset:list;margin-left:15px;padding:20px 0;counter-reset:list;list-style:none}.text-block ol li{overflow:hidden;background:0 0;position:relative;padding:0 0 16px 38px}.text-block ol 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15px}.nav-icon{width:20px;height:20px;margin-right:6px;fill:none;stroke:currentColor;stroke-width:2}.dropdown-menu{list-style:none;display:none;position:absolute;top:100%;left:0;background:#fff;min-width:320px;box-shadow:0 4px 10px rgba(0,0,0,.1);padding:5px 0}.dropdown-menu li a{padding:8px 15px;display:block}.dropdown:hover .dropdown-menu{display:block}.article-menu__nav ul>li:before{top:22px}@media (min-width:700px){.hero-grid{grid-template-columns:1fr 420px;align-items:center}.cards{grid-template-columns:repeat(3,1fr)}header nav ul{gap:1rem}.menu-btn{display:none}}@media (max-width:1000px){.brand img{width:250px}.text-block{padding:0 15px}}@media (max-width:901px){header a{font-size:16px}}@media (max-width:750px){header a{font-size:15px}}@media (max-width:700px){.menu-btn{display:inline-flex;align-items:center;color:#6366f1}nav ul{position:fixed;left:0;right:0;top:64px;background:var(--bg);flex-direction:column;padding:1rem;display:none;border-top:1px solid rgba(15,23,36,.03)}header{padding-bottom:.25rem}#mainNav{gap:10px;display:none;padding:8px 20px;background:#fff;z-index:2147483647}#mainNav .dropdown:hover .dropdown-menu{position:relative}ul.show{display:block!important}.center_imp{padding:24px 0}.splash-content{width:90%}}@media (max-width:570px){.splash-content{padding:20px}.splash-title{font-size:28px}}