:root{
  --canvas:#F6F8FC;--surface:#FFFFFF;--ink:#0E2240;--ink-soft:#33425C;--slate:#64748B;--line:#E3EAF4;--line-soft:#EDF1F8;--blue:#1E5BD6;--blue-deep:#1648AE;--blue-soft:#EAF1FE;--teal:#0E9E94;--teal-deep:#0B7F77;--mint:#DFF7EF;--mint-line:#B6ECDA;--amber:#C77A12;--display:'Bricolage Grotesque',system-ui,sans-serif;--body:'Hanken Grotesk',system-ui,sans-serif;--mono:'IBM Plex Mono',ui-monospace,monospace;--maxw:1120px;--r-md:16px;--r-lg:24px;--r-xl:32px;--shadow-sm:0 1px 2px rgba(14,34,64,.04),0 1px 3px rgba(14,34,64,.05);--shadow-md:0 8px 24px -8px rgba(14,34,64,.12),0 2px 8px -2px rgba(14,34,64,.06);--shadow-lg:0 24px 60px -20px rgba(14,34,64,.22),0 8px 24px -10px rgba(14,34,64,.10)}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--body);background:var(--canvas);color:var(--ink);line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}p,li{color:var(--ink-soft)}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}.logo{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:700;font-size:20px;letter-spacing:-.02em}.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(140deg,var(--blue),var(--teal));position:relative;box-shadow:0 4px 12px -4px rgba(14,158,148,.5)}.logo-mark:after{content:"";position:absolute;inset:0;border-radius:10px;background:linear-gradient(90deg,transparent 46%,rgba(255,255,255,.9) 46%,rgba(255,255,255,.9) 54%,transparent 54%),linear-gradient(0deg,transparent 46%,rgba(255,255,255,.55) 46%,rgba(255,255,255,.55) 54%,transparent 54%);mask:radial-gradient(circle at 70% 70%,#000 30%,transparent 31%);-webkit-mask:radial-gradient(circle at 70% 70%,#000 30%,transparent 31%)}
header{position:sticky;top:0;z-index:10;background:rgba(246,248,252,.86);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid var(--line)}.nav{height:72px;display:flex;align-items:center;justify-content:space-between}.nav-links{display:flex;gap:8px;align-items:center}.nav-links a{font-size:14.5px;font-weight:600;color:var(--ink-soft);padding:9px 12px;border-radius:10px}.nav-links a:hover{background:rgba(14,34,64,.045);color:var(--ink)}.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;font-weight:700;padding:12px 18px;border-radius:14px;border:1px solid transparent;transition:transform .2s,box-shadow .2s}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 18px -9px rgba(30,91,214,.55)}.btn-primary:hover{background:var(--blue-deep);transform:translateY(-2px)}.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}.article-hero{padding:68px 0 38px;position:relative;overflow:hidden}.article-hero:before{content:"";position:absolute;width:560px;height:560px;right:-220px;top:-260px;background:radial-gradient(circle,rgba(14,158,148,.13),transparent 62%)}.crumb{font-size:13px;font-weight:700;color:var(--teal-deep);display:inline-flex;gap:8px;align-items:center;margin-bottom:18px}.article-hero h1{font-family:var(--display);font-size:clamp(36px,5vw,58px);line-height:1.05;letter-spacing:-.03em;max-width:860px;margin-bottom:18px}.dek{font-size:clamp(17px,1.7vw,20px);color:var(--slate);max-width:780px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start;padding:24px 0 74px}.article-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--shadow-sm);padding:42px}.article-card h2{font-family:var(--display);font-size:clamp(25px,3vw,34px);letter-spacing:-.02em;line-height:1.12;margin:34px 0 12px}.article-card h2:first-child{margin-top:0}.article-card h3{font-family:var(--display);font-size:22px;margin:24px 0 8px}.article-card p{margin:0 0 16px}.article-card ul,.article-card ol{padding-left:22px;margin:0 0 20px}.article-card li{margin:8px 0}.quick-answer{background:linear-gradient(135deg,#EAF1FE,#E7F8F2);border:1px solid #CDE0FA;border-radius:22px;padding:22px;margin:24px 0}.quick-answer strong{color:var(--ink)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;margin:22px 0;background:#fff}.article-card table{border-collapse:collapse;width:100%;min-width:620px}.article-card th,.article-card td{padding:15px 16px;border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top}.article-card th{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--teal-deep);background:#FBFCFE}.article-card tr:last-child td{border-bottom:0}.note{border-left:4px solid var(--teal);background:#F3FCF8;padding:16px 18px;border-radius:0 16px 16px 0;margin:22px 0;color:var(--ink-soft)}.warning{border-left-color:var(--amber);background:#FFF8EB}.toc{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-sm);padding:22px}.toc h3{font-family:var(--display);font-size:18px;margin-bottom:12px}.toc a{display:block;padding:9px 0;color:var(--slate);font-size:14px;font-weight:600;border-bottom:1px solid var(--line-soft)}.toc a:last-child{border-bottom:0}.toc .cta{margin-top:18px;padding:18px;border-radius:18px;background:var(--blue-soft)}.toc .cta p{font-size:13.5px;margin-bottom:12px}.related{margin-top:28px;border-top:1px solid var(--line);padding-top:24px}.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.related a{background:#FBFCFE;border:1px solid var(--line);border-radius:16px;padding:16px;font-weight:700;color:var(--ink);transition:transform .2s,box-shadow .2s}.related a:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}.faq details{border:1px solid var(--line);border-radius:16px;padding:16px 18px;margin:12px 0;background:#fff}.faq summary{font-weight:800;cursor:pointer;color:var(--ink)}.faq details p{margin:12px 0 0}.source-note{font-size:13px;color:var(--slate);border-top:1px solid var(--line);margin-top:32px;padding-top:16px}.article-index{padding:62px 0 80px}.index-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.index-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}.index-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.index-card .cat{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-deep);margin-bottom:10px}.index-card h2{font-family:var(--display);font-size:22px;line-height:1.12;margin-bottom:10px}.index-card p{font-size:14.5px}.index-card span{display:inline-flex;margin-top:16px;font-weight:800;color:var(--blue)}footer{background:#fff;border-top:1px solid var(--line);padding:34px 0}.foot{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.foot p{font-size:13px;color:var(--slate)}@media (max-width:900px){.article-shell{grid-template-columns:1fr}.toc{position:relative;top:auto}.index-grid{grid-template-columns:1fr 1fr}.article-card{padding:30px}.nav-links{display:none}}@media (max-width:620px){.wrap{padding:0 18px}.index-grid,.related-grid{grid-template-columns:1fr}.article-card{padding:24px;border-radius:24px}.article-hero{padding-top:46px}.btn{width:100%}}