:root{
  --bg:#0b0f14;--bg-2:#111820;--bg-3:#18222d;--border:#243140;
  --text:#e6edf3;--muted:#9fb0c0;--accent:#50e3c2;--accent-2:#2bb8a0;--accent-ink:#04211b;
  --up:#3fd18a;--down:#ff6b6b;--link:#7dd3fc;
  --radius:12px;--max:1180px;--font:system-ui,-apple-system,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;font-size:17px}
img{max-width:100%;height:auto}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4vw,2.8rem)}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem);margin-top:1.8em}
h3{font-size:1.2rem;margin-top:1.4em}
p{margin:0 0 1em}
.container{max-width:var(--max);margin:0 auto;padding:0 16px}
.container.narrow{max-width:820px}
.muted{color:var(--muted)}.small{font-size:.85rem}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:var(--accent-ink);padding:8px}
.skip:focus{left:8px;z-index:100}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,15,20,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--text);font-size:1.05rem;white-space:nowrap}
.brand:hover{text-decoration:none}
.primary-nav{display:flex;align-items:center;gap:6px}
.primary-nav a{padding:8px 12px;border-radius:8px;color:var(--text);font-weight:500}
.primary-nav a:hover,.primary-nav a[aria-current]{background:var(--bg-3);text-decoration:none}
.nav-toggle{display:none;background:none;border:1px solid var(--border);color:var(--text);font-size:1.3rem;border-radius:8px;padding:4px 10px}
@media(max-width:900px){
  .nav-toggle{display:block}
  .primary-nav{display:none;position:absolute;left:0;right:0;top:64px;flex-direction:column;align-items:stretch;background:var(--bg-2);padding:12px 16px;border-bottom:1px solid var(--border)}
  .primary-nav.open{display:flex}
}

/* buttons */
.btn{display:inline-block;padding:10px 18px;border-radius:10px;font-weight:700;border:1px solid var(--border);color:var(--text);background:var(--bg-3);transition:.15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-2)}
.btn-ghost{background:transparent}
.btn-lg{padding:14px 24px;font-size:1.05rem}
.btn-sm{padding:6px 12px;font-size:.9rem}

/* hero */
.hero{background:radial-gradient(1200px 500px at 20% -10%,rgba(80,227,194,.18),transparent 60%),var(--bg-2);border-bottom:1px solid var(--border);padding:56px 0}
.hero-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero{padding:36px 0}}
.eyebrow{color:var(--accent);font-weight:600;text-transform:uppercase;letter-spacing:.08em;font-size:.8rem}
.lead{font-size:1.15rem;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}
.hero-points{list-style:none;padding:0;margin:0;color:var(--muted)}
.hero-points li{padding-left:24px;position:relative;margin:6px 0}
.hero-points li:before{content:"✓";color:var(--accent);position:absolute;left:0;font-weight:700}

/* price widget */
.price-widget{background:var(--bg-3);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.price-widget.compact{padding:14px}
.pw-row{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.pw-label{color:var(--muted);font-weight:600}
.pw-price{font-size:2rem;font-weight:800;font-variant-numeric:tabular-nums}
.compact .pw-price{font-size:1.5rem}
.pw-change{font-weight:600}.pw-change.up{color:var(--up)}.pw-change.down{color:var(--down)}
.pw-sub{margin-top:10px;gap:18px;color:var(--muted)}.pw-sub b{color:var(--text);font-variant-numeric:tabular-nums}
.pw-foot{margin-top:10px}

/* grids & cards */
.section{margin:48px 0}
.grid{display:grid;gap:18px}
.cards{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.hubs{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.card,.hub-card,.side-box{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.card h3,.hub-card h3{margin-top:0;font-size:1.1rem}
.card h3 a,.hub-card h3 a{color:var(--text)}
.card p,.hub-card p{color:var(--muted);font-size:.95rem}
.card .meta{color:var(--muted);font-size:.8rem}
.hub-card ul{padding-left:18px;margin:0 0 10px;font-size:.95rem}
.hub-card .more{font-weight:600}

/* article layout */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;padding:32px 16px}
@media(max-width:1000px){.article-layout{grid-template-columns:1fr}}
.article-header{margin-bottom:24px}
.article-header .meta{color:var(--muted);font-size:.9rem}
.page-header{padding:32px 0 8px}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:16px 0;font-size:.85rem;color:var(--muted)}
.breadcrumb li+li:before{content:"›";margin-right:6px}
.toc{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;margin-bottom:28px;font-size:.95rem}
.toc ol{margin:8px 0 0;padding-left:20px;columns:2;column-gap:24px}
@media(max-width:700px){.toc ol{columns:1}}
.toc li{margin:4px 0;break-inside:avoid}
.sidebar{position:sticky;top:84px;align-self:start;display:flex;flex-direction:column;gap:18px}
.side-box h3{margin-top:0;font-size:1.05rem}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{padding:6px 0;border-top:1px solid var(--border);font-size:.95rem}
.side-list li:first-child{border-top:0}

/* prose */
.prose{max-width:76ch}
.home-prose{max-width:none}
.prose h2{padding-top:.3em;border-top:1px solid var(--border)}
.prose ul,.prose ol{padding-left:24px}
.prose li{margin:4px 0}
.prose blockquote{margin:1.2em 0;padding:12px 18px;border-left:4px solid var(--accent);background:var(--bg-2);border-radius:0 8px 8px 0;color:var(--muted)}
.prose code{background:var(--bg-3);padding:2px 6px;border-radius:6px;font-size:.9em}
.prose pre{background:var(--bg-3);padding:16px;border-radius:10px;overflow:auto;font-size:.9em}
.prose pre code{background:none;padding:0}
.prose strong{color:#fff}
.table-wrap{overflow-x:auto;margin:1.2em 0;border:1px solid var(--border);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
th{background:var(--bg-3);font-weight:700}
tr:last-child td{border-bottom:0}
figure{margin:1.5em 0}
figcaption{color:var(--muted);font-size:.85rem;text-align:center}

/* faq */
.faq details{border:1px solid var(--border);border-radius:10px;margin:10px 0;background:var(--bg-2)}
.faq summary{cursor:pointer;padding:14px 18px;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:before{content:"+";display:inline-block;width:20px;color:var(--accent);font-weight:800}
.faq details[open] summary:before{content:"–"}
.faq-a{padding:0 18px 14px;color:var(--muted)}

/* cta */
.cta-box{margin:48px 0;padding:32px;border-radius:var(--radius);background:linear-gradient(135deg,rgba(80,227,194,.15),rgba(125,211,252,.08));border:1px solid var(--border);text-align:center}
.cta-box h2{margin-top:0;border:0;padding:0}
.cta-box p{color:var(--muted);max-width:60ch;margin:0 auto 18px}

/* footer */
.site-footer{border-top:1px solid var(--border);background:var(--bg-2);margin-top:64px;padding:40px 0 20px;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:2fr repeat(6,1fr);gap:24px}
@media(max-width:1000px){.footer-grid{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr 1fr}}
.site-footer h3{font-size:.95rem;margin:0 0 10px}
.site-footer h3 a{color:var(--text)}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:5px 0}
.site-footer li a{color:var(--muted)}
.footer-bottom{border-top:1px solid var(--border);margin-top:24px;padding-top:16px;color:var(--muted);font-size:.85rem}