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1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--max-width: 1280px;--content-width: 75ch;--header-height: 72px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-2xl: 32px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .35s ease;--transition-spring: .4s cubic-bezier(.34, 1.56, .64, 1);--z-base: 0;--z-dropdown: 100;--z-sticky: 200;--z-header: 300;--z-modal: 400;--z-toast: 500}[data-theme=dark]{--color-bg: #0a0a0f;--color-bg-elevated: #12121a;--color-bg-glass: rgba(18, 18, 26, .72);--color-bg-glass-hover: rgba(18, 18, 26, .85);--color-text: #f8fafc;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-text-tertiary: #475569;--color-primary: #818cf8;--color-primary-hover: #a5b4fc;--color-primary-subtle: rgba(129, 140, 248, .15);--color-primary-glass: rgba(129, 140, 248, .2);--color-tip: #60a5fa;--color-tip-bg: rgba(59, 130, 246, .12);--color-caution: #fbbf24;--color-caution-bg: rgba(245, 158, 11, .12);--color-danger: #f87171;--color-danger-bg: rgba(239, 68, 68, .12);--color-note: #22d3ee;--color-note-bg: rgba(6, 182, 212, .12);--color-border: rgba(255, 255, 255, .1);--color-border-light: rgba(255, 255, 255, .05);--color-border-glass: rgba(255, 255, 255, .08);--glass-shadow: 0 8px 32px rgba(0, 0, 0, .4);--glass-shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, .5);--glass-highlight: inset 0 1px 0 rgba(255, 255, 255, .1)}}@layer layout{body{font-family:var(--font-body);font-size:var(--text-base);font-weight:400;line-height:1.7;color:var(--color-text);background:var(--color-bg);transition:background-color var(--transition-base),color 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var(--space-4);border-radius:var(--radius-md);text-decoration:none;font-weight:500;z-index:9999;transition:top var(--transition-fast);font-family:var(--font-body)}.skip-link:focus{top:var(--space-4);outline:2px solid var(--color-primary);outline-offset:2px}.site-header{position:fixed;top:0;left:0;right:0;z-index:var(--z-header);height:var(--header-height);background:var(--color-bg-glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-bottom:var(--glass-border);box-shadow:var(--glass-shadow),var(--glass-highlight);transition:all var(--transition-base)}.site-header:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.1) 0%,transparent 50%,rgba(255,255,255,.05) 100%);pointer-events:none;border-radius:inherit}[data-theme=dark] .site-header:before{background:linear-gradient(135deg,rgba(255,255,255,.03) 0%,transparent 50%,rgba(255,255,255,.01) 100%)}.nav-container{max-width:var(--max-width);margin:0 auto;padding:0 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var(--space-3);border-radius:var(--radius-md);position:relative;transition:all var(--transition-fast)}.nav-links a:after{content:"";position:absolute;bottom:0;left:50%;transform:translate(-50%);width:0;height:2px;background:var(--color-primary);border-radius:var(--radius-full);transition:width var(--transition-fast)}.nav-links a:hover{color:var(--color-text);background:var(--color-primary-subtle)}.nav-links a:hover:after{width:60%}.nav-actions{display:flex;align-items:center;gap:var(--space-3)}.search-btn{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);background:var(--color-bg-glass);border:1px solid var(--color-border);border-radius:var(--radius-full);cursor:pointer;color:var(--color-text-secondary);font-size:var(--text-sm);font-family:var(--font-body);font-weight:500;transition:all var(--transition-fast);backdrop-filter:blur(10px)}.search-btn:hover{background:var(--color-bg-glass-hover);border-color:var(--color-primary);color:var(--color-text);box-shadow:var(--glass-shadow)}.search-shortcut{font-size:var(--text-xs);color:var(--color-text-muted);background:var(--color-bg-elevated);padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm);border:1px solid var(--color-border);font-weight:500;font-family:var(--font-mono)}.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:var(--space-3);z-index:101;min-width:44px;min-height:44px;justify-content:center;align-items:center;border-radius:var(--radius-md);transition:background var(--transition-fast)}.hamburger:hover{background:var(--color-primary-subtle)}.hamburger span{width:24px;height:2px;background:var(--color-text);border-radius:var(--radius-full);transition:all var(--transition-base)}.hamburger.active span:nth-child(1){transform:rotate(45deg) 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a:hover{background:var(--color-primary-subtle)}.nav-actions{margin-top:var(--space-4);flex-direction:column}.search-btn{width:100%;justify-content:center;padding:var(--space-4)}}.search-modal{position:fixed;inset:0;z-index:var(--z-modal);display:flex;align-items:flex-start;justify-content:center;padding-top:15vh;visibility:hidden;opacity:0;transition:all var(--transition-base)}.search-modal.active{visibility:visible;opacity:1}.search-backdrop{position:absolute;inset:0;background:#0f172a99;backdrop-filter:blur(4px);transition:opacity var(--transition-base)}[data-theme=dark] .search-backdrop{background:#000000b3}.search-container{position:relative;width:90%;max-width:640px;background:var(--color-bg-glass);backdrop-filter:var(--glass-blur-heavy);-webkit-backdrop-filter:var(--glass-blur-heavy);border:var(--glass-border);border-radius:var(--radius-xl);box-shadow:var(--glass-shadow-lg),var(--glass-highlight);overflow:hidden;transform:translateY(-20px) scale(.98);transition:all 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var(--color-primary-glass);color:#fff}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--color-bg-glass);color:var(--color-text);border:1px solid var(--color-border);backdrop-filter:blur(10px)}.btn-secondary:hover{background:var(--color-bg-glass-hover);border-color:var(--color-primary);color:var(--color-primary)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-primary-subtle);color:var(--color-primary)}.article-card{display:flex;flex-direction:column;padding:var(--space-6);background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-lg);text-decoration:none;color:inherit;transition:all var(--transition-base);position:relative;overflow:hidden}.article-card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.05) 0%,transparent 50%);opacity:0;transition:opacity 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p{color:var(--color-text-secondary);font-size:var(--text-lg);margin:0}.skeleton{background:linear-gradient(90deg,var(--color-border) 25%,var(--color-border-light) 50%,var(--color-border) 75%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:var(--radius-md)}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes fade-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-out{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-10px)}}::view-transition-old(root){animation:fade-out .3s ease}::view-transition-new(root){animation:fade-in .3s ease}}@layer groundy{.article-content{max-width:var(--content-width);margin:0 auto}.article-content h1,.article-content h2,.article-content h3,.article-content h4,.article-content h5,.article-content h6{margin-top:var(--space-12);margin-bottom:var(--space-5);scroll-margin-top:calc(var(--header-height) + var(--space-6))}.article-content h1:first-child,.article-content h2:first-child{margin-top:0}.article-content p{margin-bottom:var(--space-5);line-height:1.8}.article-content ul,.article-content ol{margin:var(--space-5) 0;padding-left:var(--space-6)}.article-content li{margin:var(--space-2) 0;color:var(--color-text-secondary);line-height:1.7}.article-content ul li{list-style:none;position:relative}.article-content ul li:before{content:"";position:absolute;left:calc(-1 * var(--space-5));top:.6em;width:6px;height:6px;background:var(--color-primary);border-radius:50%;opacity:.6}.article-content ol li{padding-left:var(--space-2)}.article-content li>ul,.article-content li>ol{margin:var(--space-2) 0}.article-content blockquote{margin:var(--space-8) 0;padding:var(--space-6) var(--space-8);background:var(--color-bg-elevated);border-left:4px solid var(--color-primary);border-radius:0 var(--radius-lg) var(--radius-lg) 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