:root{--bg-primary: #020617;--bg-surface: rgba(15, 23, 42, .75);--bg-surface-hover: rgba(30, 41, 59, .85);--card-border: rgba(51, 65, 85, .7);--card-border-highlight: rgba(6, 182, 212, .4);--accent-cyan: #06b6d4;--accent-cyan-light: #22d3ee;--accent-indigo: #6366f1;--accent-indigo-light: #818cf8;--text-main: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-main);line-height:1.6;-webkit-font-smoothing:antialiased}.ambient-glow{position:fixed;width:600px;height:600px;border-radius:50%;filter:blur(140px);z-index:-1;pointer-events:none;opacity:.2}.glow-cyan{top:-100px;left:20%;background:radial-gradient(circle,var(--accent-cyan) 0%,transparent 70%)}.glow-indigo{top:500px;right:15%;background:radial-gradient(circle,var(--accent-indigo) 0%,transparent 70%)}.navbar{position:sticky;top:0;z-index:50;background:#020617d9;backdrop-filter:blur(16px);border-bottom:1px solid rgba(51,65,85,.8)}.nav-container{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between}.nav-brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:18px;color:var(--text-main)}.brand-badge{background:#06b6d426;color:var(--accent-cyan-light);border:1px solid rgba(6,182,212,.3);padding:2px 8px;border-radius:6px;font-size:11px;font-weight:700;text-transform:uppercase}.nav-links{display:flex;gap:20px;align-items:center}.nav-links a{color:var(--text-secondary);text-decoration:none;font-size:13px;font-weight:600;transition:color .2s}.nav-links a:hover{color:var(--accent-cyan-light)}.nav-actions{display:flex;align-items:center;gap:12px}.nav-brand,.nav-actions .btn{white-space:nowrap}.guide-link{color:var(--accent-cyan-light);font-weight:700;text-decoration:none}.guide-link:hover{text-decoration:underline}.answer-content h2{font-size:17px;margin:22px 0 6px;color:var(--text-primary)}.answer-content ul{padding-left:20px;margin:8px 0}.answer-content li{margin:6px 0;line-height:1.6}@media(max-width:767px){.nav-links,.brand-badge{display:none}}.btn{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:10px;font-size:13px;font-weight:700;text-decoration:none;cursor:pointer;transition:all .2s ease;border:none}.btn-primary{background:linear-gradient(135deg,var(--accent-cyan),var(--accent-indigo));color:#020617;box-shadow:0 4px 14px #06b6d440}.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px)}.btn-outline{background:#1e293b99;border:1px solid var(--card-border);color:var(--text-main)}.btn-outline:hover{background:#334155cc;border-color:var(--accent-cyan)}.btn-cta-lg{padding:12px 24px;font-size:15px;border-radius:12px}.container{max-width:1200px;margin:0 auto;padding:40px 20px 80px}.container-narrow{max-width:880px;margin:0 auto;padding:40px 20px 80px}.breadcrumbs{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted);margin-bottom:24px;flex-wrap:wrap}.breadcrumbs a{color:var(--text-secondary);text-decoration:none}.breadcrumbs a:hover{color:var(--accent-cyan-light)}.chips-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:16px}.chip{padding:3px 10px;border-radius:9999px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em}.chip-type{background:#06b6d41f;color:var(--accent-cyan-light);border:1px solid rgba(6,182,212,.25)}.chip-difficulty-easy{background:#10b9811f;color:#34d399;border:1px solid rgba(16,185,129,.25)}.chip-difficulty-medium{background:#f59e0b1f;color:#fbbf24;border:1px solid rgba(245,158,11,.25)}.chip-difficulty-hard{background:#ef44441f;color:#f87171;border:1px solid rgba(239,68,68,.25)}.chip-role{background:#6366f11a;color:var(--accent-indigo-light);border:1px solid rgba(99,102,241,.2)}.question-title{font-size:28px;font-weight:800;letter-spacing:-.02em;color:#fff;line-height:1.3;margin-bottom:24px}@media(min-width:768px){.question-title{font-size:34px}}.hero-header{text-align:center;max-width:720px;margin:0 auto 40px}.hero-header h1{font-size:36px;font-weight:900;letter-spacing:-.03em;margin-bottom:12px}.hero-header p{color:var(--text-secondary);font-size:16px}.filter-bar{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}.role-pill{padding:6px 14px;border-radius:9999px;font-size:12px;font-weight:600;background:#0f172a99;border:1px solid var(--card-border);color:var(--text-secondary);cursor:pointer;transition:all .15s ease}.role-pill:hover{background:#1e293bcc;color:var(--text-main);border-color:var(--accent-cyan)}.role-pill.active{background:#06b6d426;color:var(--accent-cyan-light);border-color:var(--accent-cyan);font-weight:700}.glass-card{background:var(--bg-surface);border:1px solid var(--card-border);border-radius:16px;padding:24px;margin-bottom:24px;backdrop-filter:blur(12px);box-shadow:0 10px 30px #00000040}.card-header-label{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--accent-cyan-light);margin-bottom:16px;border-bottom:1px solid rgba(51,65,85,.5);padding-bottom:10px}.answer-content{color:#cbd5e1;font-size:15px;line-height:1.7}.answer-content p{margin-bottom:14px}.answer-content strong{color:#fff}.answer-content pre{background:#090d16;border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:16px;margin:16px 0;overflow-x:auto;font-family:var(--font-mono);font-size:13px;color:#38bdf8;line-height:1.5}.tips-list{list-style:none;padding:0;display:flex;flex-col;gap:12px}.tip-item{display:flex;align-items:flex-start;gap:10px;color:#cbd5e1;font-size:14px;line-height:1.6}.tip-icon{color:#34d399;flex-shrink:0;margin-top:3px}.cta-banner{background:linear-gradient(135deg,#06b6d41f,#6366f11f);border:1px solid var(--card-border-highlight);border-radius:16px;padding:24px;margin:32px 0;display:flex;flex-direction:column;gap:16px;align-items:flex-start}@media(min-width:640px){.cta-banner{flex-direction:row;align-items:center;justify-content:space-between}}.cta-text h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:4px}.cta-text p{font-size:13px;color:var(--text-secondary)}.cta-actions{display:flex;gap:10px;flex-wrap:wrap}.related-list{display:flex;flex-direction:column;gap:10px}.related-link{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#0f172a80;border:1px solid var(--card-border);border-radius:10px;color:#e2e8f0;text-decoration:none;font-size:14px;font-weight:600;transition:all .15s ease}.related-link:hover{background:var(--bg-surface-hover);border-color:var(--accent-cyan);color:var(--accent-cyan-light);transform:translate(4px)}.group-section{margin-bottom:48px}.group-title{font-size:20px;font-weight:800;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(51,65,85,.6);padding-bottom:10px}.group-badge{font-size:12px;color:var(--accent-cyan-light);background:#06b6d41f;padding:2px 8px;border-radius:6px}.questions-grid{display:grid;grid-template-columns:1fr;gap:16px}@media(min-width:768px){.questions-grid{grid-template-columns:repeat(2,1fr)}}.question-card{background:var(--bg-surface);border:1px solid var(--card-border);border-radius:14px;padding:20px;display:flex;flex-direction:column;justify-content:space-between;transition:all .2s ease;text-decoration:none}.question-card:hover{background:var(--bg-surface-hover);border-color:var(--accent-cyan);transform:translateY(-2px);box-shadow:0 8px 24px #06b6d426}.card-question{color:#fff;font-size:15px;font-weight:700;line-height:1.4;margin-bottom:12px}.card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:12px;border-top:1px solid rgba(51,65,85,.4)}.card-roles{font-size:11px;color:var(--text-muted)}.card-arrow{color:var(--accent-cyan-light);font-size:13px;font-weight:700}.footer{border-top:1px solid rgba(51,65,85,.8);padding:40px 20px;text-align:center;color:var(--text-muted);font-size:13px;background:#020617f2}.footer-links{display:flex;justify-content:center;gap:24px;margin-bottom:20px;flex-wrap:wrap}.footer-links a{color:var(--text-secondary);text-decoration:none}.footer-links a:hover{color:var(--accent-cyan-light)}