/* Dark theme base */
:root{
  --bg:#0b1220; --surface:#0f172a; --text:#e2e8f0; --muted:#94a3b8;
  --brand:#fde68a; --brand-ink:#111827; --accent:#34d399; --ring:#22d3ee;
  --shadow:0 1px 2px rgba(0,0,0,.6),0 8px 28px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
.container{max-width:1100px;margin:0 auto;padding:0 1rem}
.section{padding:3rem 0}
.section-title{font-size:1.75rem;margin:0 0 1rem}
.lead{color:var(--muted)}
.muted{color:var(--muted)}
a{color:#7dd3fc;text-decoration:none}
a:hover{text-decoration:underline}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:1rem;top:1rem;background:#111;color:#fff;padding:.5rem .75rem;z-index:1000}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,23,42,.85);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid #1f2937}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;max-width:1100px;margin:0 auto;padding:.75rem 1rem}
.brand{display:inline-flex;align-items:center;gap:.5rem;font-weight:800;color:#e5e7eb}
.brand-text{letter-spacing:.2px}
.nav-toggle{display:inline-flex;flex-direction:column;gap:4px;border:1px solid #1f2937;background:var(--surface);padding:.5rem;border-radius:.5rem;cursor:pointer}
.nav-toggle-bar{width:20px;height:2px;background:#e5e7f0}
.nav-menu{display:none}
.nav-menu.open{display:grid;gap:1rem;padding:1rem 0}
.nav-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}
.nav-list a{color:#e5e7eb;font-weight:700;font-size:.875rem;line-height:1.625}
@media(min-width:768px){.nav-list a{font-size:1rem}}
@media(min-width:768px){.nav-toggle{display:none}.nav-menu{display:grid;grid-template-columns:auto auto;gap:1rem}.nav-list{flex-direction:row;gap:1rem}}

/* Hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(1200px 400px at 30% 0%, rgba(52,211,153,.12), transparent 60%),linear-gradient(135deg,#0b1220 0%,#0f172a 60%,#0b1220 100%);border-bottom:1px solid #1f2937}
.hero-inner{padding:3rem 1rem 2rem}
.hero h1{font-size:clamp(1.6rem,3.2vw,2.4rem);margin:0 0 .75rem}
.hero-cta{display:flex;gap:.75rem;margin-top:1rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border-radius:.75rem;padding:.625rem 1rem;font-weight:800;border:1px solid transparent;box-shadow:var(--shadow)}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-secondary{background:transparent;color:#e5e7eb;border-color:#334155}
.hero-visual{position:relative;height:200px;margin-top:1rem}
.eggcar{position:absolute;right:10%;bottom:0;width:220px;height:140px}
.egg{position:absolute;left:52%;bottom:78px;width:54px;height:72px;background:radial-gradient(80% 80% at 30% 30%,#fffdf2,#ffe07a);border-radius:50% 50% 48% 52%/58% 58% 42% 42%;box-shadow:0 8px 24px rgba(253,230,138,.35);animation:wobble 2.8s ease-in-out infinite;transform-origin:50% 90%}
.car{position:absolute;left:25%;bottom:30px;width:140px;height:40px;background:linear-gradient(#1f2937,#0b1220);border-radius:10px;box-shadow:0 12px 30px rgba(0,0,0,.45)}
.wheel{position:absolute;bottom:-16px;width:36px;height:36px;background:#0b1220;border-radius:50%;box-shadow:inset 0 0 0 6px #64748b,inset 0 0 0 10px #020617;animation:roll 3s linear infinite}
.wheel.left{left:8px}.wheel.right{right:8px}
@keyframes wobble{0%{transform:rotate(0)}50%{transform:rotate(-6deg)}100%{transform:rotate(0)}}
@keyframes roll{from{transform:rotate(0)}to{transform:rotate(360deg)}}

/* Content */
.card-grid{display:grid;grid-template-columns:1fr;gap:1rem;padding:0;margin:1rem 0 0;list-style:none}
.card{background:rgba(15,23,42,.6);border:1px solid #1f2937;border-radius:.75rem;padding:1rem;box-shadow:var(--shadow);transition:transform .18s ease,border-color .18s ease;backdrop-filter:saturate(140%) blur(6px)}
.card:hover{transform:translateY(-2px);border-color:#334155}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.two-col{display:grid;grid-template-columns:1fr;gap:1.25rem;align-items:center}
@media(min-width:900px){.two-col{grid-template-columns:1.2fr .8fr}}
.media-carousel{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem}
.media-carousel .frame{height:120px;border-radius:.75rem;background:radial-gradient(200px 120px at 30% 30%, rgba(125,211,252,.2), transparent 60%),linear-gradient(135deg,#111827,#0f172a);border:1px solid #1f2937;box-shadow:var(--shadow)}
.steps{padding-left:1.25rem}
.benefits{list-style:disc;padding-left:1.25rem}
.game-frame{background:rgba(125,211,252,.08);border:1px dashed #334155;border-radius:.75rem;min-height:280px;display:grid;place-items:center;color:var(--muted)}
details{background:rgba(15,23,42,.6);border:1px solid #1f2937;border-radius:.75rem;padding:.75rem 1rem;margin:.5rem 0;box-shadow:var(--shadow)}
summary{cursor:pointer;font-weight:700}
details[open]{border-color:#334155}

/* Footer */
.site-footer{background:#0b1220;color:#e2e8f0;margin-top:2rem;padding-top:2rem;border-top:1px solid #1f2937}
.site-footer a{font-size:.875rem;line-height:1.625}
@media(min-width:768px){.site-footer a{font-size:1rem}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:1rem}
@media(min-width:900px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
.footer-title{margin:0 0 .5rem}
.small.print{border-top:1px solid #1f2937;padding:.75rem 0;color:#94a3b8}

/* Link interactions (scoped) */
.nav a, .site-footer a{transition:color .2s ease-out}
.nav a:hover, .site-footer a:hover{color:#ffffffcc;text-decoration:none}
.nav a:focus-visible, .site-footer a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Article content links */
article a{color:#7dd3fc;transition:color .2s ease-out}
article a:hover{color:#bfe3ff}
article a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Table of Contents */
.toc{background:rgba(15,23,42,.6);border:1px solid #1f2937;border-radius:.75rem;padding:1rem;box-shadow:var(--shadow);margin:1rem 0}
.toc h2{margin:0 0 .5rem;font-size:1.125rem;color:#e2e8f0}
.toc-header{display:flex;align-items:center;justify-content:space-between;margin:0 0 .5rem}
.toc .toggle{border:1px solid #334155;background:var(--surface);color:var(--text);padding:.25rem .5rem;border-radius:.375rem;font-size:.875rem;cursor:pointer}
.toc nav ul{list-style:none;margin:0;padding:0}
.toc nav li{margin:.25rem 0}
.toc nav a{color:#cbd5e1;text-decoration:none}
.toc nav a:hover{color:#ffffff}
.toc .depth-2{padding-left:1rem}
/* Collapse on mobile */
@media (max-width: 767px){
  .toc[data-collapsed="true"] nav{display:none}
}
/* Always expanded on desktop */
@media (min-width: 768px){
  .toc nav{display:block !important}
  .toc .toggle{display:none}
}

/* CTA section */
.cta{background:rgba(15,23,42,.6);border:1px solid #1f2937;border-radius:.75rem;padding:1rem;box-shadow:var(--shadow);margin:1.25rem 0;text-align:center}
.cta h2{margin:.25rem 0 .5rem;font-size:1.25rem;color:#e2e8f0}
.cta p{margin:0 0 .75rem;color:#94a3b8}
.cta-row{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}

/* Back-to-top button */
.back-to-top{position:fixed;right:1rem;bottom:1rem;width:44px;height:44px;border-radius:.75rem;border:1px solid #334155;background:#fde68a;color:#111827;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);z-index:60;opacity:.95;cursor:pointer}
.back-to-top:hover{filter:brightness(.98)}
.back-to-top:focus-visible{outline:2px solid var(--ring);outline-offset:2px}
.back-to-top[hidden]{display:none}
@media (prefers-reduced-motion: reduce){.back-to-top{scroll-behavior:auto}}

/* Anchor scroll offset for sticky header */
[id]{scroll-margin-top:80px}

/* Utility max-width helpers to avoid inline styles */
.maxw-72ch{max-width:72ch}
.maxw-78ch{max-width:78ch}

/* Footer padding helper */
.footer-pad{padding:1rem 1rem 0 1rem}

/* Prose styles for blog articles */
.prose{color:var(--text);line-height:1.7}
.prose h1{font-size:1.875rem;line-height:1.2;margin:0 0 .75rem;text-align:center}
.prose h2{font-size:1.375rem;line-height:1.3;margin:1.25rem 0 .5rem}
.prose h3{font-size:1.125rem;line-height:1.35;margin:1rem 0 .5rem}
.prose p{margin:.75rem 0}
.prose ul,.prose ol{margin:.5rem 0 .75rem;padding-left:1.25rem}
.prose li{margin:.25rem 0}
.prose strong{font-weight:700}
.prose em{font-style:italic}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:#0b1220;border:1px solid #1f2937;border-radius:.375rem;padding:.1rem .35rem}
.prose pre{background:#0b1220;border:1px solid #1f2937;border-radius:.5rem;padding:.75rem;overflow:auto}
.prose a{color:#7dd3fc;text-decoration:underline;text-underline-offset:2px;transition:color .2s ease-out}
.prose a:hover{color:#bfe3ff}
.prose a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.prose hr{border:0;border-top:1px solid #1f2937;margin:1.25rem 0}
.prose blockquote{border-left:3px solid #334155;padding:.5rem 1rem;margin:.75rem 0;color:#cbd5e1;background:#0f172a}
.prose table{width:100%;border-collapse:collapse;margin:1rem 0;border:1px solid #1f2937}
.prose th,.prose td{border:1px solid #1f2937;padding:.5rem .75rem;text-align:left}
.prose thead th{position:sticky;top:0;background:#0f172a}
.prose img{max-width:100%;height:auto;border-radius:.5rem}
.prose .meta{color:var(--muted);font-size:.9rem;margin:.25rem 0 .75rem;text-align:center}

@media(min-width:768px){
  .prose{font-size:1rem;line-height:1.75}
  .prose h1{font-size:2rem}
  .prose h2{font-size:1.5rem}
}

@media (prefers-reduced-motion: reduce){
  .nav a, .site-footer a, article a{transition:none}
}