*{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#036;--color-primary-dark:#024;--color-secondary:#1a6b3c;--color-secondary-dark:#0e4d2a;--color-accent:#d46a1e;--color-accent-light:#e8943a;--color-bg:#fff;--color-bg-alt:#f5f7fa;--color-bg-dark:#e8ecf1;--color-text:#2c3e50;--color-text-light:#5a6c7d;--color-text-muted:#89a;--color-border:#dde3ea;--max-width:960px;--header-height:70px}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.7;font-size:16px}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-accent)}img{max-width:100%;height:auto}h1,h2,h3,h4{line-height:1.3;color:var(--color-primary-dark)}h1{font-size:2rem;margin-bottom:1rem}h2{font-size:1.5rem;margin:2rem 0 1rem}h3{font-size:1.25rem;margin:1.5rem 0 .75rem}p{margin-bottom:1rem}.site-header{background:var(--color-primary);color:#fff;position:-webkit-sticky;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.15)}.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 1rem;justify-content:space-between;height:var(--header-height)}.header-inner,.logo-link{display:flex;align-items:center}.logo-link{gap:.75rem;color:#fff;font-weight:700;font-size:1.1rem}.logo-link:hover{color:var(--color-accent-light)}.logo-svg{width:44px;height:44px}.logo-text{line-height:1.2}.logo-text-sub{font-size:.7rem;font-weight:400;opacity:.85;display:block}.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:.5rem}.main-nav{display:flex;gap:0}.main-nav a{color:#fff;padding:.5rem 1rem;font-size:.9rem;border-radius:4px;transition:background .2s}.main-nav a.active,.main-nav a:hover{background:hsla(0,0%,100%,.15);color:#fff}@media (max-width:768px){.nav-toggle{display:block}.main-nav{display:none;position:absolute;top:var(--header-height);left:0;right:0;background:var(--color-primary-dark);flex-direction:column;padding:1rem 0;box-shadow:0 4px 12px rgba(0,0,0,.2)}.main-nav.open{display:flex}.main-nav a{padding:.75rem 1.5rem;border-radius:0}.logo-text{font-size:.95rem}}.site-footer{background:var(--color-primary-dark);color:hsla(0,0%,100%,.8);padding:3rem 1rem 1.5rem;margin-top:4rem}.footer-inner{max-width:var(--max-width);margin:0 auto}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;grid-gap:2rem;gap:2rem;margin-bottom:2rem}@media (max-width:768px){.footer-grid{grid-template-columns:1fr;gap:1.5rem}}.footer-section h4{color:#fff;font-size:1rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:2px solid var(--color-accent);display:inline-block}.footer-section p{font-size:.9rem;margin-bottom:.5rem}.footer-links{list-style:none}.footer-links li{margin-bottom:.5rem}.footer-links a{color:hsla(0,0%,100%,.75);font-size:.9rem;transition:color .2s}.footer-links a:hover{color:var(--color-accent-light)}.footer-bottom{border-top:1px solid hsla(0,0%,100%,.15);padding-top:1.5rem;text-align:center;font-size:.8rem;color:hsla(0,0%,100%,.5)}.main-content{max-width:var(--max-width);margin:0 auto;padding:2rem 1rem;min-height:calc(100vh - var(--header-height) - 200px)}.hero{background:linear-gradient(135deg,var(--color-primary) 0,var(--color-primary-dark) 100%);color:#fff;padding:4rem 1rem;text-align:center}.hero h1{color:#fff;font-size:2.5rem;margin-bottom:1rem}.hero p{font-size:1.15rem;max-width:700px;margin:0 auto 1.5rem;opacity:.9}@media (max-width:768px){.hero{padding:2.5rem 1rem}.hero h1{font-size:1.75rem}.hero p{font-size:1rem}}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:1.5rem;gap:1.5rem;margin:2rem 0}.card{background:#fff;border:1px solid var(--color-border);border-radius:8px;padding:1.5rem;transition:box-shadow .2s,transform .2s}.card:hover{box-shadow:0 4px 16px rgba(0,0,0,.08);transform:translateY(-2px)}.card h3{color:var(--color-primary);margin-top:0}.card p{font-size:.95rem;color:var(--color-text-light)}.card-link{display:inline-block;margin-top:.5rem;color:var(--color-accent);font-weight:600;font-size:.9rem}.card-link:hover{color:var(--color-primary)}.btn{display:inline-block;background:var(--color-accent);color:#fff;padding:.75rem 2rem;border-radius:6px;font-weight:600;font-size:1rem;transition:background .2s,transform .1s;border:none;cursor:pointer}.btn:hover{background:var(--color-accent-light);color:#fff;transform:translateY(-1px)}.article-content{font-size:1.05rem;line-height:1.8}.article-content h2{padding-top:1rem;border-bottom:2px solid var(--color-bg-dark);padding-bottom:.5rem}.article-content h3{color:var(--color-secondary-dark)}.article-content table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.95rem}.article-content td,.article-content th{border:1px solid var(--color-border);padding:.75rem 1rem;text-align:left}.article-content th{background:var(--color-primary);color:#fff;font-weight:600}.article-content tr:nth-child(2n){background:var(--color-bg-alt)}.article-content ol,.article-content ul{margin:1rem 0 1rem 1.5rem}.article-content li{margin-bottom:.5rem}.article-content blockquote{border-left:4px solid var(--color-accent);padding:1rem 1.5rem;margin:1.5rem 0;background:var(--color-bg-alt);font-style:italic}.toc{background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:8px;padding:1.25rem 1.5rem;margin-bottom:2rem}.toc h4{margin:0 0 .75rem;font-size:.95rem;color:var(--color-primary);text-transform:uppercase;letter-spacing:.05em}.toc ul{list-style:none;margin:0;padding:0}.toc li{margin-bottom:.35rem}.toc a{font-size:.9rem;color:var(--color-text-light);transition:color .2s}.toc a:hover{color:var(--color-accent)}.toc .toc-h2{padding-left:0;font-weight:600}.toc .toc-h3{padding-left:1rem}.faq-section{margin:3rem 0;border-top:2px solid var(--color-border);padding-top:2rem}.faq-section h2{border-bottom:none;text-align:center;margin-bottom:1.5rem}.faq-item{border:1px solid var(--color-border);border-radius:8px;margin-bottom:1rem;overflow:hidden}.faq-question{width:100%;text-align:left;padding:1rem 1.25rem;background:var(--color-bg-alt);border:none;cursor:pointer;font-size:1rem;font-weight:600;color:var(--color-primary-dark);display:flex;justify-content:space-between;align-items:center;transition:background .2s;font-family:inherit;line-height:1.4}.faq-question:hover{background:var(--color-bg-dark)}.faq-arrow{font-size:.8rem;transition:transform .3s;flex-shrink:0;margin-left:1rem}.faq-item.open .faq-arrow{transform:rotate(180deg)}.faq-answer{display:none;padding:1rem 1.25rem 1.25rem;font-size:.95rem;line-height:1.7;color:var(--color-text-light)}.faq-item.open .faq-answer{display:block}.image-wrapper{text-align:center;padding:2rem 0}.image-wrapper img{border-radius:8px;box-shadow:0 4px 20px rgba(0,0,0,.1);margin:1.5rem 0}.image-wrapper .image-caption{font-size:.9rem;color:var(--color-text-muted);margin-top:.5rem}.page-404{text-align:center;padding:4rem 1rem}.page-404 h1{font-size:6rem;color:var(--color-border);margin-bottom:.5rem}.page-404 h2{margin-top:0}.feature-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:1.5rem;gap:1.5rem;margin:2rem 0}.feature-item{display:flex;align-items:flex-start;gap:1rem}.feature-icon{font-size:2rem;flex-shrink:0;width:48px;height:48px;background:var(--color-bg-alt);border-radius:50%;display:flex;align-items:center;justify-content:center}.feature-item h3{margin:0 0 .25rem;font-size:1.05rem}.feature-item p{font-size:.9rem;color:var(--color-text-light);margin:0}.info-box{background:linear-gradient(135deg,var(--color-primary) 0,var(--color-secondary) 100%);color:#fff;padding:2.5rem;border-radius:12px;margin:2rem 0;text-align:center}.info-box h2{color:#fff;border:none;margin-top:0}.info-box p{opacity:.9;max-width:600px;margin:0 auto 1rem}.breadcrumb{font-size:.85rem;margin-bottom:1.5rem}.breadcrumb,.breadcrumb a{color:var(--color-text-muted)}.breadcrumb a:hover{color:var(--color-accent)}.breadcrumb span{margin:0 .35rem}.section-divider{border:none;border-top:1px solid var(--color-border);margin:3rem 0}@media (max-width:768px){h1{font-size:1.6rem}h2{font-size:1.3rem}.main-content{padding:1.5rem 1rem}.card-grid,.feature-list{grid-template-columns:1fr}}