:root{
  --bg:#f7f9fc;--surface:#ffffff;--surface-2:#eef4ff;--text:#0f172a;--muted:#526071;--line:#dbe4f0;--brand:#2563eb;--brand-2:#0ea5e9;--brand-3:#7c3aed;--good:#07856a;--warn:#b45309;--danger:#b91c1c;--shadow:0 18px 50px rgba(15,23,42,.08);--radius:22px;--max:1180px}
[data-theme="dark"]{--bg:#0b1120;--surface:#10192d;--surface-2:#14213a;--text:#edf4ff;--muted:#b6c3d6;--line:#263854;--brand:#60a5fa;--brand-2:#38bdf8;--brand-3:#a78bfa;--good:#34d399;--warn:#fbbf24;--danger:#f87171;--shadow:0 20px 60px rgba(0,0,0,.35)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}a{color:inherit}img{max-width:100%;height:auto}.skip{position:absolute;left:-999px;top:auto}.skip:focus{left:12px;top:12px;background:var(--surface);z-index:9999;padding:10px 14px;border-radius:12px}.notice{background:linear-gradient(90deg,var(--brand),var(--brand-2));color:white;text-align:center;font-weight:700;font-size:14px;padding:9px 16px}.site-header{position:sticky;top:0;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);z-index:50}[data-theme="dark"] .site-header{background:rgba(11,17,32,.88)}.nav-wrap{max-width:var(--max);margin:auto;padding:14px 18px;display:flex;align-items:center;gap:18px}.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;letter-spacing:-.03em;font-size:22px;white-space:nowrap}.logo-mark{width:40px;height:40px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-3));display:grid;place-items:center;color:white;font-weight:900;box-shadow:var(--shadow)}.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}.nav-links a{padding:9px 11px;border-radius:12px;text-decoration:none;color:var(--muted);font-weight:750;font-size:14px}.nav-links a:hover,.nav-links a.active{color:var(--brand);background:var(--surface-2)}.actions{display:flex;align-items:center;gap:8px}.btn,.tool-btn,button{border:0;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:850;padding:12px 16px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .18s ease,filter .18s ease,box-shadow .18s ease;box-shadow:0 10px 28px rgba(37,99,235,.2)}.btn:hover,.tool-btn:hover,button:hover{transform:translateY(-2px);filter:saturate(1.1)}.btn.secondary{background:var(--surface);color:var(--text);border:1px solid var(--line);box-shadow:none}.theme-btn,.menu-btn{border:1px solid var(--line);background:var(--surface);color:var(--text);box-shadow:none;padding:10px 12px}.menu-btn{display:none}.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 12% 20%,rgba(37,99,235,.18),transparent 30%),radial-gradient(circle at 88% 14%,rgba(14,165,233,.18),transparent 30%),linear-gradient(180deg,var(--surface),var(--bg));border-bottom:1px solid var(--line)}.hero-inner{max-width:var(--max);margin:auto;padding:70px 18px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--line);color:var(--brand);padding:7px 12px;border-radius:999px;font-weight:850;font-size:13px}.hero h1{font-size:clamp(34px,5vw,62px);line-height:1.02;margin:18px 0 18px;letter-spacing:-.06em}.lead{font-size:18px;color:var(--muted);max-width:760px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.hero-panel{background:rgba(255,255,255,.74);border:1px solid var(--line);border-radius:30px;padding:18px;box-shadow:var(--shadow);backdrop-filter:blur(18px);animation:floatSoft 7s ease-in-out infinite}[data-theme="dark"] .hero-panel{background:rgba(16,25,45,.78)}@keyframes floatSoft{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}.mini-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:16px;margin:10px 0;display:flex;gap:12px;align-items:flex-start}.mini-icon{width:42px;height:42px;border-radius:14px;background:var(--surface-2);display:grid;place-items:center;color:var(--brand);font-weight:900}.section{max-width:var(--max);margin:auto;padding:56px 18px}.section-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:24px}.section h2{font-size:clamp(26px,3vw,42px);line-height:1.12;letter-spacing:-.04em;margin:0}.section p.sub{color:var(--muted);margin:8px 0 0;max-width:760px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 6px 22px rgba(15,23,42,.04);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;position:relative;overflow:hidden}.card:hover{transform:translateY(-4px);border-color:rgba(37,99,235,.36);box-shadow:var(--shadow)}.card h3{font-size:20px;line-height:1.22;margin:8px 0 8px;letter-spacing:-.02em}.card p{color:var(--muted);margin:0 0 14px}.pill{display:inline-flex;gap:6px;align-items:center;background:var(--surface-2);color:var(--brand);padding:6px 10px;border-radius:999px;font-size:12px;font-weight:900;text-transform:uppercase;letter-spacing:.04em}.marquee{overflow:hidden;padding:14px 0;border-block:1px solid var(--line);background:var(--surface)}.marquee-track{display:flex;gap:12px;width:max-content;animation:marquee 35s linear infinite}.marquee a{padding:10px 16px;border-radius:999px;border:1px solid var(--line);background:var(--bg);color:var(--muted);font-weight:850;text-decoration:none;white-space:nowrap}@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}.content-wrap{max-width:var(--max);margin:auto;padding:32px 18px 64px;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px;align-items:start}.article{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:clamp(22px,4vw,42px);box-shadow:0 10px 30px rgba(15,23,42,.04)}.breadcrumb{color:var(--muted);font-size:14px;margin-bottom:18px}.article h1{font-size:clamp(32px,5vw,54px);line-height:1.04;letter-spacing:-.055em;margin:12px 0 16px}.article h2{font-size:clamp(23px,3vw,34px);line-height:1.18;letter-spacing:-.035em;margin-top:40px}.article h3{font-size:22px;margin-top:28px}.article p,.article li{color:var(--muted);font-size:17px}.article strong{color:var(--text)}.toc{background:var(--surface-2);border:1px solid var(--line);border-radius:20px;padding:18px;margin:24px 0}.toc a{display:block;text-decoration:none;color:var(--muted);font-weight:760;padding:5px 0}.tool-box{background:linear-gradient(180deg,var(--surface-2),var(--surface));border:1px solid var(--line);border-radius:26px;padding:22px;margin:26px 0;box-shadow:var(--shadow)}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:flex;flex-direction:column;gap:7px}.field label{font-weight:850;font-size:14px}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:14px;padding:13px 14px;font:inherit;outline:none}.field textarea{min-height:120px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(37,99,235,.11)}.result{margin-top:16px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:18px;display:none}.result.show{display:block;animation:reveal .22s ease}@keyframes reveal{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.result .big{font-size:30px;font-weight:950;color:var(--brand);letter-spacing:-.03em}.disclaimer{border-left:5px solid var(--warn);background:rgba(245,158,11,.08);padding:18px;border-radius:18px;margin:28px 0;color:var(--muted)}.author-box{display:flex;gap:16px;align-items:flex-start;background:var(--surface-2);border:1px solid var(--line);border-radius:22px;padding:18px;margin:30px 0}.avatar{width:54px;height:54px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand-3));color:white;display:grid;place-items:center;font-weight:950}.sidebar{position:sticky;top:92px}.side-card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:20px;margin-bottom:18px}.side-card a{display:block;color:var(--muted);text-decoration:none;font-weight:760;padding:7px 0}.faq details{border:1px solid var(--line);background:var(--surface);border-radius:16px;padding:14px 16px;margin:10px 0}.faq summary{font-weight:900;cursor:pointer}.footer{background:#071126;color:#dce8fb;margin-top:40px}.footer-inner{max-width:var(--max);margin:auto;padding:48px 18px;display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:28px}.footer a{color:#dce8fb;text-decoration:none;display:block;padding:4px 0}.footer h3{color:#fff;margin:0 0 12px}.footer p{color:#a9b8d0}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 18px;text-align:center;color:#a9b8d0}.table{width:100%;border-collapse:collapse;margin:20px 0;border:1px solid var(--line);border-radius:18px;overflow:hidden}.table th,.table td{text-align:left;padding:12px;border-bottom:1px solid var(--line);vertical-align:top}.table th{background:var(--surface-2);color:var(--text)}.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.check{display:flex;gap:9px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px}.ad-space{border:1px dashed var(--line);background:var(--surface);border-radius:18px;color:var(--muted);padding:14px;text-align:center;margin:20px 0;font-size:14px}@media(max-width:980px){.nav-links{display:none;position:absolute;left:18px;right:18px;top:72px;flex-direction:column;align-items:stretch;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.menu-btn{display:inline-flex}.hero-inner{grid-template-columns:1fr}.content-wrap{grid-template-columns:1fr}.sidebar{position:static}.grid,.grid.two,.footer-inner{grid-template-columns:1fr}.tool-grid{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.checklist{grid-template-columns:1fr}.actions .btn.secondary{display:none}}@media(max-width:560px){.notice{font-size:12px}.logo span:last-child{font-size:18px}.hero-inner{padding:44px 18px}.article{border-radius:20px;padding:20px}.footer-inner{padding:36px 18px}.marquee-track{animation-duration:25s}}


/* Adsterra advertisement zones */
.adsterra-zone{max-width:var(--max);margin:22px auto;padding:14px 18px;text-align:center;overflow:hidden}
.adsterra-zone .ad-label{display:block;margin:0 0 8px;color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.adsterra-row{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;min-height:70px}
.adsterra-top{margin-top:14px;margin-bottom:8px}.adsterra-mid{margin-top:28px;margin-bottom:28px}.adsterra-bottom{margin-top:30px;margin-bottom:10px}
.adsterra-rect,.adsterra-native,.adsterra-small-banner,.adsterra-side,.adsterra-skyscraper,.adsterra-desktop,.adsterra-mobile{max-width:100%;overflow:hidden;border-radius:14px}
.adsterra-direct{display:inline-flex;margin-top:12px;padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);background:var(--surface);text-decoration:none;font-size:13px;font-weight:800}
.adsterra-direct:hover{color:var(--brand);border-color:rgba(37,99,235,.35)}
.adsterra-mobile{display:none}.adsterra-wide-only{display:block}
@media(max-width:760px){.adsterra-zone{padding-left:10px;padding-right:10px;margin:16px auto}.adsterra-desktop,.adsterra-wide-only{display:none}.adsterra-mobile{display:block}.adsterra-small-banner{max-width:100%;overflow-x:auto}.adsterra-row{gap:10px}}