.header{background:var(--bg-primary);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-container{display:flex;align-items:center;justify-content:space-between;height:64px}.logo{display:flex;align-items:center;gap:8px;font-size:1.5rem;font-weight:700;color:var(--text-primary)}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700}.nav{display:flex;gap:32px}.nav-link{color:var(--text-secondary);font-weight:500;padding:8px 0;position:relative;transition:color .2s}.nav-link:hover,.nav-link.active{color:var(--primary)}.nav-link.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--primary);border-radius:2px}.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}.hamburger{display:block;width:24px;height:2px;background:var(--text-primary);position:relative;transition:all .3s}.hamburger:before,.hamburger:after{content:"";position:absolute;width:24px;height:2px;background:var(--text-primary);transition:all .3s}.hamburger:before{top:-7px}.hamburger:after{bottom:-7px}.hamburger.open{background:transparent}.hamburger.open:before{top:0;transform:rotate(45deg)}.hamburger.open:after{bottom:0;transform:rotate(-45deg)}@media (max-width: 768px){.menu-toggle{display:block}.nav{position:absolute;top:64px;left:0;right:0;background:var(--bg-primary);flex-direction:column;gap:0;padding:16px 0;border-bottom:1px solid var(--border);display:none}.nav-open{display:flex}.nav-link{padding:12px 20px}.nav-link.active:after{display:none}}.footer{background:var(--bg-primary);border-top:1px solid var(--border);margin-top:auto}.footer-container{padding:48px 20px 24px}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;margin-bottom:32px}.footer-section h4{font-size:1rem;margin-bottom:16px;color:var(--text-primary)}.footer-section p{color:var(--text-secondary);font-size:.875rem;margin-bottom:8px}.footer-links{display:flex;flex-direction:column;gap:8px}.footer-links a{color:var(--text-secondary);font-size:.875rem;transition:color .2s}.footer-links a:hover{color:var(--primary)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border);flex-wrap:wrap;gap:12px}.footer-bottom p,.icp-link{color:var(--text-muted);font-size:.875rem}.icp-link:hover{color:var(--primary)}@media (max-width: 768px){.footer-bottom{flex-direction:column;text-align:center}}.hero{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:80px 0;text-align:center}.hero-title{font-size:3rem;margin-bottom:16px;color:#fff}.hero-title .highlight{color:#fbbf24}.hero-subtitle{font-size:1.25rem;opacity:.9;margin-bottom:32px;line-height:1.8}.hero-actions{display:flex;gap:16px;justify-content:center}.hero-actions .btn{background:#fff;color:#667eea}.hero-actions .btn:hover{background:#f8fafc}.hero-actions .btn-outline{background:transparent;border-color:#fff;color:#fff}.hero-actions .btn-outline:hover{background:#ffffff1a}.stats{background:var(--bg-primary);padding:40px 0;margin-top:-40px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:600px;margin:0 auto}.stat-item{text-align:center;padding:24px;background:var(--bg-primary);border-radius:var(--radius);box-shadow:var(--shadow-md)}.stat-value{display:block;font-size:2.5rem;font-weight:700;color:var(--primary)}.stat-label{color:var(--text-secondary);font-size:.875rem}.section{padding:64px 0}.section-bg{background:var(--bg-tertiary)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.section-title{text-align:center;margin-bottom:48px}.section-more{color:var(--primary);font-weight:500}.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}.article-card{background:var(--bg-primary);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow);transition:all .2s;display:block}.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.article-meta{display:flex;align-items:center;gap:12px;margin-bottom:16px}.article-title{font-size:1.25rem;margin-bottom:8px;color:var(--text-primary)}.article-desc{color:var(--text-secondary);font-size:.875rem}.project-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.project-card{background:var(--bg-primary);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow)}.project-name{font-size:1.25rem;margin-bottom:8px}.project-desc{color:var(--text-secondary);font-size:.875rem;margin-bottom:16px}.project-tags{display:flex;flex-wrap:wrap;gap:8px}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:32px}.feature-item{text-align:center;padding:32px}.feature-icon{font-size:3rem;margin-bottom:16px}.feature-item h3{margin-bottom:12px}.feature-item p{color:var(--text-secondary);font-size:.875rem}@media (max-width: 768px){.hero{padding:60px 0}.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}.hero-actions{flex-direction:column}.stats-grid{grid-template-columns:1fr}}.page-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:60px 0;text-align:center}.page-header h1{color:#fff;margin-bottom:12px}.page-header p{opacity:.9;font-size:1.125rem}.category-tabs{display:flex;gap:12px;padding:32px 0;flex-wrap:wrap}.category-tab{padding:10px 24px;background:var(--bg-primary);border:1px solid var(--border);border-radius:24px;cursor:pointer;font-weight:500;color:var(--text-secondary);transition:all .2s}.category-tab:hover{border-color:var(--primary);color:var(--primary)}.category-tab.active{background:var(--primary);border-color:var(--primary);color:#fff}.articles-list{display:flex;flex-direction:column;gap:20px;padding-bottom:64px}.article-item{background:var(--bg-primary);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow);display:block;transition:all .2s}.article-item:hover{transform:translate(8px);box-shadow:var(--shadow-md)}.article-item-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.article-date{color:var(--text-muted);font-size:.875rem}.article-item-title{font-size:1.25rem;margin-bottom:8px;color:var(--text-primary)}.article-item-desc{color:var(--text-secondary);margin-bottom:16px;line-height:1.6}.article-item-tags{display:flex;flex-wrap:wrap;gap:8px}@media (max-width: 768px){.page-header{padding:40px 0}.category-tabs{padding:20px 0}.category-tab{padding:8px 16px;font-size:.875rem}}.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:24px;padding:48px 0 64px}.project-card{background:var(--bg-primary);padding:28px;border-radius:var(--radius);box-shadow:var(--shadow);position:relative;transition:all .2s}.project-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.project-card.highlight{border:2px solid var(--primary)}.featured-badge{position:absolute;top:-10px;right:20px;background:var(--primary);color:#fff;padding:4px 12px;border-radius:12px;font-size:.75rem;font-weight:500}.project-name{font-size:1.25rem;margin-bottom:12px}.project-desc{color:var(--text-secondary);font-size:.875rem;margin-bottom:20px;line-height:1.6}.project-tech{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}.project-links{display:flex;gap:16px}.project-link{color:var(--primary);font-weight:500;font-size:.875rem}.project-link:hover{text-decoration:underline}@media (max-width: 768px){.projects-grid{grid-template-columns:1fr;padding:24px 0 48px}}.notes-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px;padding:48px 0 64px}.note-card{background:var(--bg-primary);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow);transition:all .2s}.note-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.note-meta{display:flex;align-items:center;gap:12px;margin-bottom:16px}.note-date{color:var(--text-muted);font-size:.875rem}.note-title{font-size:1.25rem;margin-bottom:8px}.note-desc{color:var(--text-secondary);font-size:.875rem;line-height:1.6}@media (max-width: 768px){.notes-list{grid-template-columns:1fr;padding:24px 0 48px}}.article-header{background:var(--bg-primary);border-bottom:1px solid var(--border);padding:40px 0}.back-link{color:var(--primary);font-weight:500;margin-bottom:24px;display:inline-block}.article-header .article-meta{display:flex;align-items:center;gap:12px;margin-bottom:16px}.article-header .article-date{color:var(--text-muted);font-size:.875rem}.article-header .article-title{font-size:2.5rem;margin-bottom:16px}.article-header .article-tags{display:flex;flex-wrap:wrap;gap:8px}.article-content{max-width:800px;margin:0 auto;padding:48px 0 64px;line-height:1.8}.article-content h2{margin-top:48px;margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--border)}.article-content h3{margin-top:32px;margin-bottom:12px}.article-content p{margin-bottom:16px;color:var(--text-secondary)}.article-content code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-family:Fira Code,monospace;font-size:.875em}@media (max-width: 768px){.article-header{padding:24px 0}.article-header .article-title{font-size:1.75rem}.article-content{padding:32px 0 48px}}:root{--primary: #2563eb;--primary-dark: #1d4ed8;--secondary: #64748b;--accent: #f59e0b;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border: #e2e8f0;--shadow: 0 1px 3px 0 rgb(0 0 0 / .1);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1);--radius: 8px;--max-width: 1200px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--text-primary);background:var(--bg-secondary);line-height:1.6}a{color:var(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-dark)}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:600;line-height:1.3}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}.btn{display:inline-block;padding:10px 20px;background:var(--primary);color:#fff;border-radius:var(--radius);font-weight:500;transition:all .2s;cursor:pointer;border:none}.btn:hover{background:var(--primary-dark);transform:translateY(-1px)}.btn-outline{background:transparent;border:1px solid var(--primary);color:var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}.tag{display:inline-block;padding:4px 12px;background:var(--bg-tertiary);color:var(--text-secondary);border-radius:20px;font-size:.875rem}.tag-primary{background:#dbeafe;color:var(--primary)}.tag-accent{background:#fef3c7;color:#d97706}