:root{--bg:#0f172a;--card:#1e293b;--line:#334155;--fg:#f1f5f9;--mut:#94a3b8;--g:linear-gradient(90deg,#6366f1,#8b5cf6,#ec4899);--r:1rem}
body.light{--bg:#f8fafc;--card:#fff;--line:#e2e8f0;--fg:#0f172a;--mut:#475569}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 Inter,system-ui,sans-serif}
a{color:#a5b4fc;text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 1.25rem}
.site-header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;gap:1rem;min-height:64px}
.logo{font-weight:800;font-size:1.35rem;color:var(--fg)}.logo span,.grad{background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav{display:flex;gap:1.1rem;margin-inline-start:auto;flex-wrap:wrap}.nav a{color:var(--fg);font-weight:500}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.6rem 1.3rem;border-radius:999px;background:var(--g);color:#fff!important;font-weight:700;border:0;cursor:pointer;text-decoration:none!important}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--fg)!important}
.toggle{background:none;border:1px solid var(--line);color:var(--fg);border-radius:999px;width:44px;height:44px;cursor:pointer}
.hero{padding:5rem 0 3rem;text-align:center}.hero h1{font-size:clamp(2rem,5vw,3.6rem);line-height:1.1;margin:0 0 1rem}
.hero p{color:var(--mut);max-width:640px;margin:0 auto 2rem;font-size:1.1rem}
.stats{display:flex;justify-content:center;gap:2.5rem;margin-top:2.5rem;flex-wrap:wrap}.stats b{display:block;font-size:2rem}
.grid{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.4rem;transition:.2s;box-shadow:0 8px 24px -16px #000}
.card:hover{transform:translateY(-3px);border-color:#8b5cf6}.card h3{margin:.3rem 0}.card p{color:var(--mut);margin:.3rem 0}
.meta{font-size:.85rem;color:var(--mut)}section{padding:2.5rem 0}h2{font-size:1.7rem}
.crumbs{font-size:.85rem;color:var(--mut);padding:1rem 0}.crumbs a{color:var(--mut)}
.qa{border-inline-start:4px solid #8b5cf6;background:var(--card);padding:1rem 1.25rem;border-radius:.75rem;margin:1rem 0}
.qa strong{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:#c4b5fd}
details{background:var(--card);border:1px solid var(--line);border-radius:.75rem;padding:1rem;margin:.6rem 0}summary{cursor:pointer;font-weight:600}
table{width:100%;border-collapse:collapse;margin:1rem 0}th,td{border:1px solid var(--line);padding:.6rem;text-align:start}
.quiz{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.5rem;margin:1.5rem 0}
.bar{height:8px;background:var(--line);border-radius:9px;overflow:hidden;margin-bottom:1.25rem}.bar i{display:block;height:100%;background:var(--g);transition:.3s}
.opts{display:grid;gap:.6rem;margin-top:1rem}.opts button{min-height:48px;text-align:start;padding:.75rem 1rem;border-radius:.75rem;border:1px solid var(--line);background:var(--bg);color:var(--fg);cursor:pointer;font-size:1rem}
.opts button:hover{border-color:#8b5cf6}
.res-bar{margin:.5rem 0}.res-bar div{height:12px;border-radius:9px;background:var(--line)}.res-bar div i{display:block;height:100%;border-radius:9px;background:var(--g)}
.author{display:flex;gap:1rem;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1rem;margin:1.5rem 0}
.content{max-width:820px}.site-footer{border-top:1px solid var(--line);margin-top:3rem;padding:2.5rem 0;color:var(--mut)}
.fcols{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}.fcols ul{list-style:none;padding:0}.fcols a{color:var(--mut)}
#cookie{position:fixed;bottom:12px;inset-inline:12px;max-width:520px;margin:auto;background:var(--card);border:1px solid var(--line);border-radius:.75rem;padding:.8rem 1rem;display:none;gap:1rem;align-items:center;z-index:50;font-size:.9rem}
.filters{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0}.filters a{border:1px solid var(--line);padding:.4rem .9rem;border-radius:999px;color:var(--fg)}
input[type=search],input,textarea{min-height:44px;width:100%;padding:.6rem 1rem;border-radius:.75rem;border:1px solid var(--line);background:var(--card);color:var(--fg);font-size:1rem}
@media(max-width:760px){.nav{display:none}.nav.open{display:flex;flex-direction:column;position:absolute;top:64px;inset-inline:0;background:var(--bg);padding:1rem;border-bottom:1px solid var(--line)}.menu-btn{display:block!important}}
.menu-btn{display:none;margin-inline-start:auto}