:root{color-scheme:light;--color-bg: #f8fafc;--color-bg-secondary: #f1f5f9;--color-bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);--color-surface: #ffffff;--color-surface-elevated: #ffffff;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--color-header-bg: rgba(255, 255, 255, .8);--color-pattern-1: rgba(234, 88, 12, .05);--color-pattern-2: rgba(220, 38, 38, .03);--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-muted: #94a3b8;--color-accent: #ea580c;--color-accent-hover: #c2410c;--color-accent-light: #ffedd5;--color-accent-glow: rgba(234, 88, 12, .15);--icon-filter: sepia(1) saturate(5) hue-rotate(-10deg) brightness(.9);--icon-filter-mono: var(--icon-filter);--gradient-accent: linear-gradient(135deg, #ea580c 0%, #dc2626 100%);--gradient-accent-soft: linear-gradient(135deg, rgba(234, 88, 12, .1) 0%, rgba(220, 38, 38, .1) 100%);--font-sans: "Roboto", "Helvetica Neue", Arial, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 2rem;--space-12: 3rem;--space-16: 4rem;--space-24: 6rem;--max-width: 64rem;--border-radius: .5rem;--border-radius-lg: .75rem;--border-radius-xl: 1rem;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .07), 0 2px 4px -1px rgba(15, 23, 42, .04);--shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, .08), 0 4px 6px -2px rgba(15, 23, 42, .04);--shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, .1), 0 10px 10px -5px rgba(15, 23, 42, .04);--shadow-glow: 0 0 20px var(--color-accent-glow);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1)}[data-theme=dark]{color-scheme:dark;--color-bg: #0f1115;--color-bg-secondary: #141922;--color-bg-gradient: linear-gradient(135deg, #0f1115 0%, #171e2a 100%);--color-surface: #161c27;--color-surface-elevated: #1b2331;--color-border: #243143;--color-border-hover: #304157;--color-header-bg: rgba(15, 17, 21, .82);--color-pattern-1: rgba(234, 88, 12, .08);--color-pattern-2: rgba(220, 38, 38, .06);--color-text-primary: #e6eaf2;--color-text-secondary: #b9c4d6;--color-text-muted: #8b97ad;--color-accent: #f9a862;--color-accent-hover: #f38a3a;--color-accent-light: rgba(249, 168, 98, .18);--color-accent-glow: rgba(249, 168, 98, .2);--icon-filter: none;--icon-filter-mono: brightness(0) invert(1);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .35);--shadow-md: 0 6px 12px rgba(0, 0, 0, .35);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .4);--shadow-xl: 0 24px 32px rgba(0, 0, 0, .45)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:1.6;color:var(--color-text-primary);background:var(--color-bg);min-height:100vh;display:flex;flex-direction:column}main{flex:1}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background-image:radial-gradient(circle at 25% 25%,var(--color-pattern-1) 0%,transparent 50%),radial-gradient(circle at 75% 75%,var(--color-pattern-2) 0%,transparent 50%);pointer-events:none;z-index:-1}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;color:var(--color-text-primary);letter-spacing:-.02em}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}p{color:var(--color-text-secondary);margin-bottom:var(--space-4)}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover)}code{font-family:var(--font-mono);font-size:.875em;background-color:var(--color-bg-secondary);padding:var(--space-1) var(--space-2);border-radius:var(--border-radius);border:1px solid var(--color-border)}::selection{background-color:var(--color-accent);color:#fff}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-6)}.section{padding:var(--space-16) 0;position:relative}.header{background:var(--color-header-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100}.header__inner{display:flex;align-items:center;justify-content:space-between;height:4rem}.header__brand{display:flex;align-items:center;gap:var(--space-3)}.header__logo{font-weight:700;font-size:var(--text-lg);font-family:var(--font-mono);color:var(--color-text-primary);transition:all var(--transition-base);padding:var(--space-2) var(--space-3);border-radius:var(--border-radius);background:transparent}.header__logo:hover{color:var(--color-accent);background:var(--color-accent-light)}.nav{display:flex;gap:var(--space-2)}.theme-toggle{border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-secondary);width:2.5rem;height:2.5rem;border-radius:9999px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);position:relative;overflow:hidden}.theme-toggle:hover{border-color:var(--color-accent);color:var(--color-accent);background:var(--color-accent-light)}.theme-toggle__icon{width:1.2rem;height:1.2rem;transition:all var(--transition-fast)}.theme-toggle__icon--sun{display:none}[data-theme=dark] .theme-toggle__icon--sun{display:block}[data-theme=dark] .theme-toggle__icon--moon{display:none}.nav__link{font-size:var(--text-sm);font-weight:500;color:var(--color-text-secondary);padding:var(--space-2) var(--space-3);border-radius:var(--border-radius);transition:all var(--transition-fast);position:relative}.nav__link:hover,.nav__link--active{color:var(--color-accent);background:var(--color-accent-light)}.nav__link--active:after{content:"";position:absolute;bottom:0;left:50%;transform:translate(-50%);width:20px;height:2px;background:var(--gradient-accent);border-radius:2px}.footer{border-top:1px solid var(--color-border);padding:var(--space-8) 0;margin-top:auto;background:var(--color-surface)}.footer__inner{display:flex;align-items:center;justify-content:space-between;font-size:var(--text-sm);color:var(--color-text-muted)}.card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-lg);padding:var(--space-6);box-shadow:var(--shadow-sm);transition:all var(--transition-base);position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-accent);opacity:0;transition:opacity var(--transition-base)}.card:hover{border-color:var(--color-border-hover);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.card:hover:before{opacity:1}.grid{display:grid;gap:var(--space-6)}.grid--2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid--3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-size:var(--text-sm);font-weight:600;border-radius:var(--border-radius);transition:all var(--transition-fast);cursor:pointer;border:none}.btn--primary{background:var(--gradient-accent);color:#fff;box-shadow:var(--shadow-md),0 0 0 0 var(--color-accent-glow)}.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn--secondary{background:var(--color-surface);color:var(--color-text-primary);border:1px solid var(--color-border)}.btn--secondary:hover{border-color:var(--color-accent);color:var(--color-accent);background:var(--color-accent-light)}.tag{font-size:var(--text-xs);font-family:var(--font-mono);font-weight:500;background:var(--gradient-accent-soft);color:var(--color-accent);padding:var(--space-1) var(--space-3);border-radius:9999px;border:1px solid var(--color-accent-light);transition:all var(--transition-fast)}.tag:hover{background:var(--color-accent-light)}.link-underline{position:relative}.link-underline:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--gradient-accent);transition:width var(--transition-base)}.link-underline:hover:after{width:100%}@media(max-width:768px){:root{--text-4xl: 2rem;--text-3xl: 1.5rem;--text-5xl: 2.5rem}.header__inner{flex-direction:column;height:auto;padding:var(--space-4) 0;gap:var(--space-3)}.header__brand{width:100%;justify-content:space-between}.header__brand .theme-toggle{margin-right:var(--space-2)}.header .nav{flex-wrap:wrap;justify-content:center;gap:var(--space-2)}.header .nav__link{padding:var(--space-2)}.header .theme-toggle{width:2.2rem;height:2.2rem}.footer__inner{flex-direction:column;gap:var(--space-4);text-align:center}.grid--2,.grid--3{grid-template-columns:1fr}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.animate-fade-in-up{animation:fadeInUp .5s ease-out forwards}