:root{--ink:#111827;--muted:#5b6473;--bg:#f5f7fb;--card:#fff;--line:#e3e7ef;--accent:#6747ed;--accent2:#0f9f9a;--soft:#f0edff;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.68}
a{color:#4d38c4;text-underline-offset:3px} .wrap{width:min(var(--max),calc(100% - 32px));margin:auto}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}.nav{height:70px;display:flex;align-items:center;gap:24px}.brand{font-weight:900;color:var(--ink);text-decoration:none;letter-spacing:-.035em;font-size:1.08rem;white-space:nowrap}
.navlinks{display:flex;gap:18px;align-items:center;margin-left:auto}.navlinks>a:not(.btn){color:var(--ink);text-decoration:none;font-size:.94rem}.btn{display:inline-block;border:0;background:var(--accent);color:white!important;text-decoration:none;padding:11px 16px;border-radius:10px;font-weight:800}.nav-cta{margin-left:4px;white-space:nowrap}
.menu-toggle{display:none;background:transparent;border:1px solid var(--line);border-radius:9px;width:42px;height:42px;padding:9px;cursor:pointer}.menu-toggle span{display:block;height:2px;background:var(--ink);margin:5px 0}
.hero{padding:68px 0 48px;background:linear-gradient(135deg,#f3efff,#ecfbfa)}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:34px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.09em;font-size:.78rem;font-weight:850;color:var(--accent)}
h1{font-size:clamp(2.2rem,5vw,4.3rem);line-height:1.03;letter-spacing:-.055em;margin:.22em 0}h2{font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.18;letter-spacing:-.035em;margin-top:1.6em}h3{line-height:1.3}.lede{font-size:1.16rem;color:var(--muted)}
.section{padding:52px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card,.sidebar-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
.layout{display:grid;grid-template-columns:minmax(0,820px) 290px;gap:28px;align-items:start}.article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:38px}.article p,.article li{color:#303847}.article table{width:100%;border-collapse:collapse;margin:22px 0}.article th,.article td{border:1px solid var(--line);padding:11px;text-align:left;vertical-align:top}
.sidebar{position:static}.sidebar-box+.sidebar-box{margin-top:18px}.sidebar ul{padding-left:19px}.sidebar .btn{width:100%;text-align:center}.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:14px}.breadcrumb a{color:var(--muted)}
.disclosure{font-size:.88rem;color:var(--muted);border-left:4px solid var(--accent2);padding:11px 13px;background:#f8fafc;margin:18px 0}.cta{background:#18142a;color:white;border-radius:16px;padding:25px;margin:30px 0}.cta p{color:#e7e3f8}.pill{display:inline-block;background:var(--soft);color:#4d38c4;border-radius:999px;padding:5px 10px;font-size:.8rem;font-weight:800}
footer{background:#fff;border-top:1px solid var(--line);padding:38px 0;margin-top:50px;color:var(--muted)}.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footlinks{display:flex;gap:13px;flex-wrap:wrap}
.sitemap-list{columns:2;column-gap:40px}.sitemap-list li{break-inside:avoid;margin:7px 0}
@media(max-width:850px){.hero-grid,.grid,.layout{grid-template-columns:1fr}.sidebar{margin-top:0}.nav{gap:8px;height:64px}.brand{font-size:.96rem;overflow:hidden;text-overflow:ellipsis}.navlinks{display:none;position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid var(--line);padding:16px;flex-direction:column;align-items:stretch}.navlinks.open{display:flex}.navlinks .nav-cta{display:none}.mobile-actions{margin-left:auto;display:flex;align-items:center;gap:6px}.menu-toggle{display:block}.mobile-cta{display:inline-block!important;padding:9px 11px;font-size:.82rem}.article{padding:23px}.sitemap-list{columns:1}}
@media(min-width:851px){.mobile-actions,.mobile-cta{display:none!important}}

.offer-popup[hidden]{display:none}.offer-popup{position:fixed;inset:0;background:rgba(17,24,39,.58);z-index:1000;display:grid;place-items:center;padding:20px}
.offer-popup-card{position:relative;width:min(520px,100%);background:#fff;border-radius:18px;padding:30px;box-shadow:0 24px 80px rgba(0,0,0,.25)}
.offer-popup-card h2{margin-top:12px}.offer-popup-close{position:absolute;right:12px;top:10px;border:0;background:transparent;font-size:2rem;line-height:1;cursor:pointer;color:#4b5563}
.offer-popup-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.popup-stay{background:#fff;color:#4d38c4!important;border:1px solid #cfc8ff;cursor:pointer}
@media(max-width:850px){.offer-popup-card{padding:24px}.offer-popup-actions .btn{flex:1;text-align:center}}

.toc{background:#f8fafc;border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:24px 0}.toc strong{display:block;margin-bottom:7px}.toc ul{margin:0;padding-left:20px}
.takeaways{background:#f0fdf9;border:1px solid #b9e8df;border-radius:14px;padding:20px;margin:22px 0}.takeaways h2{margin-top:0;font-size:1.25rem}.takeaways li{margin:7px 0}
.freshness{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.88rem;margin:12px 0 20px}.freshness span{background:#f8fafc;border:1px solid var(--line);border-radius:999px;padding:5px 9px}
.faq{border-top:1px solid var(--line);margin-top:30px}.faq-item{border-bottom:1px solid var(--line);padding:14px 0}.faq-item h3{margin:0 0 6px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:20px 0}.related-card{display:block;background:#fafaff;border:1px solid var(--line);border-radius:12px;padding:15px;text-decoration:none;color:var(--ink)}.related-card strong{display:block;color:#4935c7}
.source-note{font-size:.9rem;background:#f8fafc;border-radius:12px;padding:15px;margin:22px 0}.source-note a{word-break:break-word}
.khub-group{margin:36px 0}.khub-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.khub-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.khub-card a{font-weight:800}
@media(max-width:850px){.related-grid,.khub-grid{grid-template-columns:1fr}}