.noise{position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E")}
body{background:radial-gradient(1200px 600px at 80% -10%,rgba(37,99,235,.18),transparent 60%),radial-gradient(900px 500px at 10% 10%,rgba(99,102,241,.12),transparent 60%),#020617;overflow-x:hidden}
.font-800{font-weight:800}
.glass{background:rgba(15,23,42,.55);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.07)}
.card-hover{transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .35s}
.card-hover:hover{transform:translateY(-6px);box-shadow:0 24px 60px -20px rgba(37,99,235,.35);border-color:rgba(96,165,250,.4)}
.grad-text{background:linear-gradient(92deg,#60a5fa,#a78bfa,#22d3ee);-webkit-background-clip:text;background-clip:text;color:transparent}
.chip{display:inline-flex;align-items:center;gap:.35rem;font-size:.72rem;font-weight:600;padding:.28rem .7rem;border-radius:999px;background:rgba(37,99,235,.15);color:#93c5fd;border:1px solid rgba(59,130,246,.25)}
.btn-primary{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.8rem;border-radius:999px;font-weight:700;color:#fff;background:linear-gradient(135deg,#2563eb,#4f46e5);box-shadow:0 10px 30px -10px rgba(37,99,235,.6);transition:.3s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -10px rgba(37,99,235,.75)}
.btn-ghost{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.8rem;border-radius:999px;font-weight:600;color:#cbd5e1;border:1px solid rgba(255,255,255,.15);transition:.3s}
.btn-ghost:hover{border-color:rgba(96,165,250,.5);color:#fff;background:rgba(37,99,235,.08)}
.article-body h2{font-family:Sora,sans-serif;font-size:1.5rem;font-weight:700;color:#fff;margin:2.2rem 0 1rem;scroll-margin-top:6rem}
.article-body h3{font-family:Sora,sans-serif;font-size:1.15rem;font-weight:700;color:#e2e8f0;margin:1.8rem 0 .75rem}
.article-body p{color:#cbd5e1;line-height:1.85;margin-bottom:1.1rem}
.article-body ul{list-style:disc;padding-left:1.5rem;color:#cbd5e1;line-height:1.8;margin-bottom:1.1rem}
.article-body ol{list-style:decimal;padding-left:1.5rem;color:#cbd5e1;line-height:1.8;margin-bottom:1.1rem}
.article-body strong{color:#f1f5f9}
.article-body a{color:#60a5fa;text-decoration:underline}
.article-body blockquote{border-left:3px solid #2563eb;padding:.75rem 1.25rem;background:rgba(37,99,235,.08);border-radius:0 .75rem .75rem 0;color:#bfdbfe;margin:1.5rem 0}
.article-body table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.9rem}
.article-body th{background:rgba(37,99,235,.15);color:#fff;padding:.7rem;text-align:left;border:1px solid rgba(255,255,255,.08)}
.article-body td{padding:.65rem .7rem;border:1px solid rgba(255,255,255,.06);color:#cbd5e1}
.hero-grid{background-image:linear-gradient(rgba(148,163,184,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(148,163,184,.06) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse at center,black 40%,transparent 75%)}
.toc a{display:block;padding:.45rem .75rem;border-left:2px solid rgba(255,255,255,.08);color:#94a3b8;font-size:.85rem;transition:.2s}
.toc a:hover,.toc a.active{color:#60a5fa;border-color:#2563eb}
.star{color:#fbbf24}
::selection{background:rgba(37,99,235,.4)}

/* ---- Modern upgrades ---- */
.blob{position:fixed;border-radius:50%;filter:blur(110px);opacity:.22;pointer-events:none;z-index:0;animation:blobFloat 14s ease-in-out infinite alternate}
.blob-a{width:480px;height:480px;background:#2563eb;top:-140px;right:-100px}
.blob-b{width:420px;height:420px;background:#7c3aed;bottom:-160px;left:-120px;animation-delay:-7s}
@keyframes blobFloat{from{transform:translate(0,0) scale(1)}to{transform:translate(40px,50px) scale(1.12)}}
.footer-glow{position:absolute;inset-x:0;top:0;height:1px;background:linear-gradient(90deg,transparent,#3b82f6,transparent)}
.search-glow{transition:filter .3s}
.search-glow:focus-within{filter:drop-shadow(0 0 24px rgba(59,130,246,.35))}
.pulse-dot{width:7px;height:7px;border-radius:50%;background:#34d399;display:inline-block;animation:pulseDot 1.8s ease-in-out infinite}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.75)}}
.marquee-wrap{mask-image:linear-gradient(90deg,transparent,black 8%,black 92%,transparent)}
.marquee{animation:marquee 32s linear infinite;width:max-content}
.marquee:hover{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.score-bar{width:var(--w);background:linear-gradient(90deg,#2563eb,#22d3ee);animation:scoreGrow 1.2s cubic-bezier(.2,.8,.2,1) both}
@keyframes scoreGrow{from{width:0}}
#toTop{transition:.3s;opacity:.9}
#toTop:hover{transform:translateY(-3px);border-color:rgba(96,165,250,.4)}
.filter-chip{display:inline-flex;padding:.45rem 1rem;border-radius:999px;font-size:.8rem;font-weight:600;border:1px solid rgba(255,255,255,.12);color:#94a3b8;transition:.25s}
.filter-chip:hover{color:#fff;border-color:rgba(96,165,250,.4)}
.filter-chip.active{background:rgba(37,99,235,.2);color:#93c5fd;border-color:rgba(59,130,246,.4)}
@media (prefers-reduced-motion:reduce){.blob,.marquee,.pulse-dot{animation:none}}