@import"https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;600&family=Sora:wght@300;400;600;700&display=swap";:root{--bg: #080c10;--bg-card: #0d1117;--bg-hover: #111820;--border: #1e2d3d;--border-glow: #00b4d844;--cyan: #00d4ff;--cyan-dim: #00a3c4;--blue: #4d9de0;--green: #39d353;--yellow: #f0a500;--red: #f25f5c;--text: #cdd9e5;--text-muted: #546e7a;--text-dim: #8899a6;--glow-cyan: 0 0 8px #00d4ff55, 0 0 24px #00d4ff22;--glow-soft: 0 2px 20px #00000066;--font-mono: "JetBrains Mono", monospace;--font-sans: "Sora", sans-serif;--radius: 4px;--transition: .18s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:15px;line-height:1.7;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;inset:0;background-image:linear-gradient(rgba(0,180,216,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(0,180,216,.025) 1px,transparent 1px);background-size:40px 40px;pointer-events:none;z-index:0}a{color:var(--cyan);text-decoration:none;transition:color var(--transition),text-shadow var(--transition)}a:hover{color:#fff;text-shadow:var(--glow-cyan)}h1,h2,h3{font-family:var(--font-sans);font-weight:700}::selection{background:var(--cyan);color:#000}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.container{max-width:860px;margin:0 auto;padding:0 1.5rem;position:relative;z-index:1}@media(max-width:400px){.container{padding:0 1rem}}.section-label{font-family:var(--font-mono);font-size:.68rem;color:var(--cyan);letter-spacing:.25em;text-transform:uppercase;margin-bottom:1.5rem;display:flex;align-items:center;gap:.8rem}.section-label:before{content:"//";opacity:.5}.section-label:after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent)}.tag{display:inline-block;padding:2px 9px;font-family:var(--font-mono);font-size:.67rem;border-radius:var(--radius);border:1px solid var(--border-glow);color:var(--cyan-dim);background:#00d4ff0a;letter-spacing:.05em}.badge-easy{background:#39d35322;color:var(--green);border-color:#39d35344}.badge-medium{background:#f0a50022;color:var(--yellow);border-color:#f0a50044}.badge-hard{background:#f25f5c22;color:var(--red);border-color:#f25f5c44}.blink{animation:blink 1.1s step-end infinite}@keyframes blink{50%{opacity:0}}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:border-color var(--transition),transform var(--transition),box-shadow var(--transition)}.card:hover{border-color:var(--cyan-dim);transform:translateY(-2px);box-shadow:var(--glow-soft)}header[data-astro-cid-dmqpwcec]{position:fixed;top:0;left:0;right:0;z-index:100;background:#080c10e0;border-bottom:1px solid var(--border);backdrop-filter:blur(12px)}.nav-inner[data-astro-cid-dmqpwcec]{height:52px;display:flex;align-items:center;justify-content:space-between}.logo[data-astro-cid-dmqpwcec]{font-family:var(--font-mono);font-size:1rem;font-weight:600;color:var(--text);letter-spacing:-.02em}.logo[data-astro-cid-dmqpwcec]:hover{color:var(--text);text-shadow:none}.logo-bracket[data-astro-cid-dmqpwcec]{color:var(--cyan);opacity:.7}.logo-accent[data-astro-cid-dmqpwcec]{color:var(--cyan)}.nav-links[data-astro-cid-dmqpwcec]{display:flex;list-style:none;gap:.2rem}.nav-links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]{display:block;padding:.3rem .85rem;font-size:.82rem;font-family:var(--font-mono);color:var(--text-muted);border-radius:var(--radius);transition:color var(--transition),background var(--transition);letter-spacing:.05em}.nav-links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]:hover{color:var(--text);background:var(--bg-hover);text-shadow:none}.nav-links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec].active{color:var(--cyan);background:#00d4ff0f}.menu-btn[data-astro-cid-dmqpwcec]{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:4px}.menu-btn[data-astro-cid-dmqpwcec] span[data-astro-cid-dmqpwcec]{display:block;width:20px;height:2px;background:var(--text-muted);border-radius:2px;transition:background var(--transition)}.menu-btn[data-astro-cid-dmqpwcec]:hover span[data-astro-cid-dmqpwcec]{background:var(--cyan)}@media(max-width:600px){.menu-btn[data-astro-cid-dmqpwcec]{display:flex}.nav-links[data-astro-cid-dmqpwcec]{display:none;position:fixed;top:52px;left:0;right:0;flex-direction:column;background:var(--bg-card);border-bottom:1px solid var(--border);padding:1rem 1.5rem;gap:.3rem}.nav-links[data-astro-cid-dmqpwcec].open{display:flex}.nav-links[data-astro-cid-dmqpwcec] a[data-astro-cid-dmqpwcec]{padding:.5rem 0}}footer[data-astro-cid-sz7xmlte]{border-top:1px solid var(--border);padding:1.4rem 0;position:relative;z-index:1}.footer-inner[data-astro-cid-sz7xmlte]{display:flex;justify-content:space-between;align-items:center;font-size:.75rem;color:var(--text-muted);flex-wrap:wrap;gap:.8rem}.mono[data-astro-cid-sz7xmlte]{font-family:var(--font-mono);color:var(--cyan)}.links[data-astro-cid-sz7xmlte]{display:flex;gap:1.2rem}.links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--text-muted);font-size:.75rem}.links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--cyan);text-shadow:none}main[data-astro-cid-sckkx6r4]{padding-top:5.5rem;padding-bottom:5rem;min-height:100vh}