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*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.6}a{color:var(--blue);text-underline-offset:3px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #86b1fb;outline-offset:4px}h1,h2,h3,p{margin:0}h1,h2,h3{color:var(--ink);line-height:1.2;letter-spacing:-.035em}h1{font-weight:750}h2{font-size:clamp(25px,3vw,32px);font-weight:720}h3{font-size:17px;font-weight:700}svg{flex-shrink:0;vertical-align:middle}sup{font-size:.57em;line-height:0}main{min-width:0}.wrap{width:min(1040px,calc(100% - 48px));margin-inline:auto}.site-header{width:min(1180px,calc(100% - 48px));min-height:88px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:inline-flex;align-items:baseline;gap:5px;color:var(--ink);text-decoration:none;font-size:19px;font-weight:780;letter-spacing:-.8px;white-space:nowrap}.brand-dot{font-size:25px;color:var(--blue);margin-left:-4px}.site-header nav{display:flex;gap:30px}.site-header nav a{font-size:14px;color:#475873;text-decoration:none;font-weight:550;padding:10px 0}.site-header nav a:hover,.site-header nav a[aria-current]{color:var(--blue)}.site-header nav a[aria-current]{box-shadow:0 2px var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:11px 17px;min-height:44px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-weight:650;text-decoration:none;background:white;color:var(--ink);transition:background .15s,border-color .15s}.btn:hover{background:#f5f8fd;border-color:#b8c9e2}.btn-primary{background:var(--blue);border-color:var(--blue);color:white}.btn-primary:hover{background:#1e56b8;color:white;border-color:#1e56b8}.btn-quiet{font-size:13px;min-height:38px;padding:8px 12px}.text-link,.card-action{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:600;font-size:14px;text-decoration:none}.text-link:hover{text-decoration:underline}.section{padding-block:46px}.section>h2{text-align:center;margin-bottom:26px}.site-footer{border-top:1px solid var(--border);padding-block:32px 24px;font-size:12px;color:var(--muted)}.footer-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.resource-links{display:grid;grid-template-columns:repeat(4,1fr);gap:8px 20px;margin:26px 0}.resource-links a{color:#586b87;text-decoration:none}.resource-links a:hover{text-decoration:underline;color:var(--blue)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #edf0f5;padding-top:18px}.footer-bottom nav{display:flex;flex-wrap:wrap;gap:18px}.footer-bottom a{color:var(--muted);text-decoration:none}.table-wrap{overflow:auto;max-width:100%;border:1px solid var(--border);border-radius:10px}table{border-collapse:collapse;width:100%;text-align:left;font-size:14px}th,td{padding:12px 16px;border-bottom:1px solid var(--border);vertical-align:top}th{background:var(--soft);font-weight:650;color:#445a76}td{color:#475873}tr:last-child td{border-bottom:0}.long-number{overflow-wrap:anywhere}.back-link{display:inline-block;font-size:14px;margin-bottom:24px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:12px;left:-10000px;z-index:50;background:#fff;padding:12px}.skip-link:focus{left:20px}
@media(max-width:700px){.wrap,.site-header{width:calc(100% - 36px)}.site-header{min-height:100px;flex-direction:column;justify-content:center;gap:7px;padding-block:12px}.brand{font-size:18px}.site-header nav{width:100%;justify-content:center;gap:28px}.site-header nav a{font-size:13px;padding:5px 0}.section{padding-block:32px}.footer-heading,.footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}.resource-links{grid-template-columns:1fr 1fr;font-size:12px}.site-footer{padding-top:24px}th,td{padding:10px 12px}}
/* One shared page frame, including static learning articles. */
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.learning-directory{max-width:900px;margin-inline:auto}.learning-start{margin-bottom:34px}.learning-start h2,.learning-topic h2{font-size:25px;margin-bottom:12px}.learning-start p,.learning-topic p{color:#4c5f79}.learning-start .btn{margin-top:18px}.learning-topic{display:grid;grid-template-columns:1fr 1fr;gap:44px;border-top:1px solid var(--border);padding:30px 0}.learning-topic ul{list-style:none;padding:0;margin:0}.learning-topic li+li{border-top:1px solid #edf0f5}.learning-topic a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;text-decoration:none;font-size:15px}.learning-topic a:hover{text-decoration:underline}.learning-topic svg{width:16px}h2[id],section[id]{scroll-margin-top:24px}
@media(max-width:700px){.learning-topic{grid-template-columns:1fr;gap:16px}.learning-start h2,.learning-topic h2{font-size:23px}}
.table-wrap table.compact-table{min-width:0;font-size:13px}.compact-table th,.compact-table td{padding:10px 8px}.compact-table td:last-child{white-space:nowrap}
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