/* Article pages: white reading surface, with restrained uniform borders. */
.column-reading{--reading-header:92px;--reading-nav:0px;max-width:1240px}.column-breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;line-height:1.8}.column-reading-header{max-width:920px;margin:36px 0 32px}.column-reading-header h1{font-size:clamp(27px,3.1vw,40px);line-height:1.55;letter-spacing:.02em;color:#153e4e;margin:14px 0 20px;overflow-wrap:anywhere}.column-reading-meta{display:flex;gap:20px;color:#627985;font-size:13px}.column-reading .column-tags a{border:1px solid #cfdee3;background:#fff;text-decoration:none;padding:7px 12px}.column-reading .column-tags .column-category-link{background:#e2eff1;color:#14596a}.column-reading-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px 32px;align-items:start}.column-reading-paper{grid-column:1;grid-row:1 / span 2;min-width:0;background:#fff;border:1px solid #dce6ea;border-radius:16px;overflow:hidden}.column-reading-cover{display:block;width:100%;height:auto;aspect-ratio:1672/941;object-fit:cover}.column-reading-copy{padding:36px 44px 40px}.column-reading-lead{padding-bottom:26px;margin-bottom:26px;border-bottom:1px solid #dce6ea}.column-reading-lead>p:last-child{font-size:17px;line-height:1.95;margin:12px 0 0;color:#304f5b}.column-reading .column-body{color:#253f4a;font-size:17px;line-height:2.05;letter-spacing:.025em}.column-reading .column-body p{margin:0 0 1.6em}.column-reading .column-body h2{font-size:24px;line-height:1.65;margin:2.2em 0 1em;padding-bottom:12px;border-bottom:1px solid #dce6ea;color:#163f50}.column-reading .column-body h3{font-size:20px;line-height:1.7;margin:1.8em 0 .8em;color:#163f50}.column-reading .column-body h2,.column-reading .column-body h3{scroll-margin-top:calc(var(--reading-header) + var(--reading-nav) + 24px)}.column-reading .column-body ul,.column-reading .column-body ol{padding:20px 24px 20px 42px;background:#f4f8f9;border-radius:10px;margin:22px 0}.column-reading .column-body li+li{margin-top:10px}.column-reading .column-body a{text-decoration:underline;text-underline-offset:4px;font-weight:600}.column-table-scroll{overflow-x:auto;margin:24px 0;border:1px solid #dce6ea;border-radius:10px}.column-reading .column-body table{display:table;width:100%;border-collapse:collapse;font-size:15px;line-height:1.8;margin:0}.column-reading .column-body th,.column-reading .column-body td{min-width:110px;padding:12px 16px;text-align:left;border-bottom:1px solid #dce6ea}.column-reading .column-body th{background:#eaf3f5;font-weight:700}.column-reading .column-body tr:last-child td{border-bottom:0}.column-reading .column-body tbody tr:nth-child(even){background:#f8fafb}.column-reading .column-body caption{padding:12px;text-align:left;font-weight:700}.column-article-footer{margin-top:36px;padding-top:24px;border-top:1px solid #dce6ea}.column-article-footer h2{font-size:17px;margin:0}.column-toc{grid-column:2;grid-row:1;position:sticky;top:calc(var(--reading-header) + 16px);z-index:5;border:1px solid #dce6ea;border-radius:12px;background:#fff;overflow:hidden}.column-toc summary{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;cursor:pointer;list-style:none}.column-toc summary::-webkit-details-marker{display:none}.column-toc summary small{display:block;letter-spacing:.15em;font-size:10px;color:#6a818c;margin-bottom:5px}.column-toc summary strong{font-size:16px}.column-toc[open] summary>span:last-child{transform:rotate(45deg)}.column-toc nav{max-height:calc(100dvh - var(--reading-header) - 130px);overflow-y:auto;padding:0 12px 14px}.column-toc ol{list-style:none;margin:0;padding:0}.column-toc a{display:flex;gap:10px;padding:11px 8px;text-decoration:none;font-size:13px;line-height:1.7;border-radius:6px}.column-toc a span{color:#81959e;font-size:11px}.column-toc a:hover,.column-toc a[aria-current]{background:#edf5f6;color:#075c70}.column-toc-child{padding-left:16px}.column-reading-explore{grid-column:2;grid-row:2;align-self:end;min-width:0}.column-reading-explore section{margin-top:24px;padding:20px;background:#fff;border:1px solid #dce6ea;border-radius:12px}.column-reading-explore h2{font-size:17px;margin:0 0 16px}.column-reading-explore nav a{display:flex;justify-content:space-between;gap:8px;padding:12px 0;border-bottom:1px solid #edf1f3;text-decoration:none;font-size:14px}.column-reading-explore nav small{white-space:nowrap;color:#687e88}.column-reading-explore .column-tags{gap:7px}.column-reading-explore .column-tags a{font-size:12px}.column-related{margin:48px 0}.column-related>h2{font-size:26px;margin:8px 0}.column-related>p:not(.columns-eyebrow){color:#5d7581;margin-bottom:24px}.column-start{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:40px;background:#e5f1f3;border:1px solid #c9dfe5;border-radius:16px;margin:44px 0 12px;color:#153e4e}.column-start h2{font-size:32px;line-height:1.5;margin:12px 0}.column-start-intro>p:not(.columns-eyebrow){line-height:1.9;max-width:450px}.column-primary-link{display:inline-flex;align-items:center;gap:36px;padding:15px 24px;background:#007f9e;border:1px solid #007f9e;color:white!important;border-radius:8px;text-decoration:none;font-weight:700;margin:8px 0 12px}.column-primary-link:hover{background:#076780}.column-about-link{display:block;font-size:14px;margin-top:8px}.column-start-options{display:grid;gap:12px}.column-start-options>a{display:flex;align-items:center;gap:16px;padding:20px;background:white;border:1px solid #cfdee3;border-radius:10px;text-decoration:none}.column-start-options>a>span:nth-child(2){flex:1}.column-start-options strong{font-size:16px;display:block;line-height:1.6}.column-start-options small{display:block;font-size:13px;line-height:1.7;color:#59727d;margin-top:5px}.column-step{font-size:13px;color:#007f9e}.column-reading a:focus-visible,.column-reading summary:focus-visible,.column-table-scroll:focus-visible{outline:3px solid #d68c24;outline-offset:3px}.column-reading-explore p{font-size:14px;line-height:1.8}
@media(max-width:900px){.column-reading-layout{grid-template-columns:minmax(0,1fr) 240px;gap:20px}.column-reading-copy{padding:28px}.column-start{gap:24px;padding:28px}}
@media(max-width:760px){.column-reading{--reading-header:76px;padding:24px 16px 40px}.column-reading-header{margin:24px 0}.column-reading-layout{display:flex;flex-direction:column;gap:20px}.column-reading-layout>*{width:100%;box-sizing:border-box}.column-toc{order:0;top:var(--reading-header);z-index:15}.column-toc summary{padding:12px 16px}.column-toc summary>span:first-child{display:flex;align-items:center;gap:12px}.column-toc summary small{margin:0}.column-toc nav{max-height:45dvh}.column-reading-paper{order:1;border-radius:12px}.column-reading-copy{padding:24px 20px}.column-reading .column-body{font-size:16px;line-height:2}.column-reading .column-body h2{font-size:21px}.column-reading .column-body h3{font-size:18px}.column-reading-explore{order:2;display:grid;gap:16px}.column-reading-explore section{margin:0}.column-start{grid-template-columns:1fr;padding:26px 22px;gap:24px}.column-start h2{font-size:28px}.column-start-options>a{padding:16px;gap:12px}.column-start-options strong{font-size:15px}.column-related>h2{font-size:23px}.column-reading-header h1{font-size:27px}.column-reading .column-tags{gap:7px}.column-reading .column-tags a{font-size:12px}.column-reading-lead>p:last-child{font-size:16px}}
.column-discover{display:grid;gap:20px;margin:0 0 28px;padding:24px;background:#fff;border:1px solid #dce6ea;border-radius:12px}.column-discover h2{font-size:16px;margin:0 0 12px}.column-discover nav{display:flex;flex-wrap:wrap;gap:8px}.column-discover a{display:inline-flex;gap:16px;padding:8px 12px;border:1px solid #d4e3e8;border-radius:7px;text-decoration:none;font-size:13px;line-height:1.7}.column-discover a:hover,.column-discover a[aria-current]{background:#e6f2f4;border-color:#87b3c0}.column-card-image-link{display:block;overflow:hidden}.column-card-image-link img{transition:transform .2s}.column-card-image-link:hover img{transform:scale(1.025)}@media(prefers-reduced-motion:reduce){.column-card-image-link img{transition:none}}