:root{--text:#1c1c1a;--muted:#6b6a65;--faint:#9a988f;--rule:#e3e1da;--bg:#fbfaf7;--desk:#efede7;--surface:#fff;--accent:#23439b;--accent-hover:#1b3580;--focus:#23439b;--radius:4px;--wrap:1180px;--gutter:16px;--font:ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;color-scheme:light}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);font:16px/1.55 var(--font);-webkit-font-smoothing:antialiased;margin:0}a{color:var(--accent);text-underline-offset:2px;text-decoration-thickness:1px}a:hover{color:var(--accent-hover)}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}h1,h2,h3{letter-spacing:-.01em;margin:0;font-weight:600;line-height:1.2}.wrap{max-width:var(--wrap);padding:0 var(--gutter);margin:0 auto}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.site-header{border-bottom:1px solid var(--rule);background:var(--bg)}.site-header .wrap{justify-content:space-between;align-items:center;gap:16px;height:52px;display:flex}.brand{color:var(--text);align-items:center;gap:8px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex}.brand svg{display:block}.brand span,.site-nav a{white-space:nowrap}.site-nav{gap:20px;font-size:14px;display:flex}@media (width<=520px){.site-nav .nav-optional{display:none}}.site-nav a{color:var(--muted);text-decoration:none}.site-nav a:hover{color:var(--text)}.tool-section{padding:24px 0 40px}.tool{grid-template-columns:minmax(0,1fr);grid-template-areas:"head""desk""panel";gap:20px;display:grid}.tool-head{grid-area:head}.desk{grid-area:desk}.panel{grid-area:panel}@media (width>=900px){.tool{grid-template:"desk head""desk panel"1fr/minmax(0,1fr) 320px;align-items:start;gap:24px 40px}}.crumbs{color:var(--faint);margin:0 0 10px;font-size:13px}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{text-decoration:underline}.tool-head h1{font-size:26px}.lede{color:var(--muted);margin:8px 0 0;font-size:15px}.desk{background:var(--desk);border-radius:var(--radius);flex-direction:column;align-items:center;padding:20px;display:flex}@media (width>=900px){.desk{padding:32px;position:sticky;top:16px}}.sheet{width:min(100%, calc((100svh - 150px) * var(--ar)));aspect-ratio:var(--ar);background:#fff;box-shadow:0 0 0 1px #0000000a,0 1px 2px #0000000f,0 6px 20px #0000000d}@media (width<=899px){.sheet{width:100%}}.sheet svg{width:100%;height:100%;display:block}.sheet-caption{font:12px/1.4 var(--mono);color:var(--muted);letter-spacing:.02em;margin:12px 0 0}.panel{flex-direction:column;gap:18px;font-size:14px;display:flex}.field{border:0;min-width:0;margin:0;padding:0}.field legend{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:8px;padding:0;font-size:12px;font-weight:600}.field-body{flex-direction:column;gap:8px;display:flex}.seg{border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);display:flex;overflow:hidden}.seg label{flex:1 1 0;min-width:0;position:relative}.seg label+label{border-left:1px solid var(--rule)}.seg input{opacity:0;cursor:pointer;margin:0;position:absolute;inset:0}.seg span{text-align:center;white-space:nowrap;color:var(--text);cursor:pointer;padding:7px 6px;display:block}.seg label:hover span{background:#f5f4f0}.seg input:checked+span{background:var(--text);color:#fff}.seg input:focus-visible+span{outline:2px solid var(--focus);outline-offset:-2px}.inks{gap:8px;display:flex}.ink{cursor:pointer;position:relative}.ink input{opacity:0;cursor:pointer;margin:0;position:absolute;inset:0}.ink span:first-of-type{border-radius:50%;width:28px;height:28px;display:block;box-shadow:inset 0 0 0 1px #0000001a}.ink input:checked+span{box-shadow:0 0 0 2px var(--bg), 0 0 0 3.5px var(--text)}.ink input:focus-visible+span{outline:2px solid var(--focus);outline-offset:4px}.check{cursor:pointer;align-items:center;gap:8px;display:flex}.check input{width:16px;height:16px;accent-color:var(--text);margin:0}.stepper{border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);width:max-content;display:inline-flex}.stepper button{width:34px;color:var(--text);cursor:pointer;background:0 0;border:0;font-size:16px}.stepper button:hover{background:#f5f4f0}.stepper input{border:0;border-left:1px solid var(--rule);border-right:1px solid var(--rule);text-align:center;width:48px;font:inherit;-moz-appearance:textfield;appearance:textfield;padding:6px 0}.stepper input::-webkit-inner-spin-button,.stepper input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.actions{grid-template-columns:1fr 1fr;gap:8px;padding-top:4px;display:grid}@media (width<=899px){.actions{background:var(--bg);padding:10px 0 calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--rule);margin:0 calc(-1 * var(--gutter));padding-left:var(--gutter);padding-right:var(--gutter);z-index:5;position:sticky;bottom:0}}.btn{appearance:none;border:1px solid var(--text);background:var(--surface);color:var(--text);font:600 14px/1 var(--font);border-radius:var(--radius);cursor:pointer;padding:12px 14px}.btn:hover{background:#f5f4f0}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn:disabled{opacity:.6;cursor:progress}.tip{color:var(--muted);margin:0;font-size:13px}.tip strong{color:var(--text);font-weight:600}.after-print{border-top:1px solid var(--rule);padding-top:14px}.after-print p{margin:0 0 6px;font-weight:600}.after-print ul{margin:0;padding-left:18px}.select{appearance:none;border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236b6a65' fill='none' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 12px center;width:100%;font:inherit;color:var(--text);cursor:pointer;padding:8px 32px 8px 10px}.more{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.more summary{cursor:pointer;justify-content:space-between;padding:10px 0;font-size:13px;font-weight:600;list-style:none;display:flex}.more summary::-webkit-details-marker{display:none}.more summary:after{content:"+";color:var(--muted);font-weight:400}.more[open] summary:after{content:"−"}.more-body{flex-direction:column;gap:18px;padding:4px 0 16px;display:flex}.custom{grid-template-columns:1fr 96px;gap:8px;display:grid}.custom.gauge{grid-template-columns:1fr 1fr}.custom.gauge .seg{grid-column:1/-1}.gauge-input{align-items:center;gap:6px;min-width:0;display:flex}.gauge-input input{width:100%}.gauge-input span{color:var(--muted);font-size:13px}.custom input{border:1px solid var(--rule);border-radius:var(--radius);font:inherit;background:var(--surface);min-width:0;padding:7px 10px}.hint{color:var(--faint);margin:0;font-size:12px}.summary{font:12px/1.4 var(--mono);color:var(--text);letter-spacing:.01em;text-align:center;grid-column:1/-1;margin:2px 0 0}.formats{color:var(--muted);margin:-6px 0 0;font-size:13px}.link{appearance:none;font:inherit;color:var(--accent);text-underline-offset:2px;cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}.link:disabled{opacity:.6;cursor:progress}.hint-inline{color:var(--faint)}.content{border-top:1px solid var(--rule);padding:48px 0 24px}.prose{max-width:680px}.prose h2{margin:36px 0 10px;font-size:20px}.prose h2:first-child{margin-top:0}.prose h3{margin:24px 0 6px;font-size:16px}.prose p,.prose ul,.prose ol{margin:0 0 14px}.prose li{margin-bottom:4px}.prose table{border-collapse:collapse;width:100%;margin:0 0 16px;font-size:14px}.prose th,.prose td{text-align:left;border-bottom:1px solid var(--rule);padding:8px 10px 8px 0}.prose th{font-weight:600}.section-title{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 16px;font-size:13px;font-weight:600}.block{border-top:1px solid var(--rule);padding:32px 0}.papers{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:24px 20px;margin:0;padding:0;list-style:none;display:grid}.papers a{color:var(--text);font-size:14px;text-decoration:none;display:block}.papers .thumb{aspect-ratio:215.9/279.4;background:#fff;margin-bottom:10px;transition:transform .15s;display:block;box-shadow:0 0 0 1px #0000000f,0 1px 2px #0000000a}.papers .thumb img{width:100%;height:100%;display:block}@media (width<=520px){.papers{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 12px}.papers a{font-size:13px}.papers .thumb{margin-bottom:6px}.papers .paper-blurb{display:none}}.paper-blurb{color:var(--muted);margin-top:2px;font-size:13px;display:block}.explore{border-top:0;padding-top:8px}.explore-title{font-size:20px}.explore-sub{color:var(--muted);margin:6px 0 20px;font-size:15px}.quick-dl{flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin:14px 0 0;font-size:14px;display:flex}.quick-dl span{color:var(--muted)}.quick-dl a{font-weight:600}.downloads{border-top:0;padding-top:8px}.dl-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 24px;margin-bottom:20px;display:flex}.dl-head .explore-sub{margin-bottom:0}.dl-orient{align-items:center;gap:10px;display:flex}.dl-orient[hidden]{display:none}.dl-orient-label{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-size:12px;font-weight:600}.seg{border:1px solid var(--text);border-radius:var(--radius);display:inline-flex;overflow:hidden}.seg button{appearance:none;background:var(--surface);color:var(--text);font:600 13px/1 var(--font);cursor:pointer;border:0;align-items:center;gap:7px;min-height:38px;padding:10px 14px;display:inline-flex}.seg button+button{border-left:1px solid var(--text)}.seg button[aria-pressed=true]{background:var(--text);color:#fff}.seg svg{fill:none;stroke:currentColor;stroke-width:1.5px;width:12px;height:14px}.seg svg.wide{width:14px;height:12px}.downloads .i{fill:none;stroke:currentColor;stroke-width:1.7px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:14px;height:14px}.dl-group{border-top:1px solid var(--rule)}.dl-group:last-child{border-bottom:1px solid var(--rule)}.dl-group summary{cursor:pointer;flex-wrap:wrap;align-items:baseline;gap:4px 12px;padding:16px 0;list-style:none;display:flex}.dl-group summary::-webkit-details-marker{display:none}.dl-group summary:after{content:"";border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);width:9px;height:9px;margin-left:auto;transition:transform .15s;transform:rotate(45deg)translateY(-3px)}.dl-group[open] summary:after{transform:rotate(-135deg)translateY(-1px)}.dl-group summary h3{margin:0;font-size:16px}.dl-caption{color:var(--muted);font-size:13px}.dl-cards{grid-template-columns:repeat(4,minmax(0,1fr));gap:28px 24px;max-width:980px;margin:0 0 28px;padding:0;list-style:none;display:grid}.dl-card{flex-direction:column;display:flex}.dl-thumb{aspect-ratio:1;background:var(--desk);border-radius:var(--radius);place-items:center;margin-bottom:12px;text-decoration:none;display:grid;position:relative;overflow:hidden}.dl-thumb img{background:#fff;width:66%;height:auto;transition:transform .2s;display:block;box-shadow:0 0 0 1px #0000000d,0 1px 3px #00000014}.is-landscape .dl-thumb img{transform:rotate(90deg)}.dl-thumb{transition:background-color .15s}.dl-card:has(.dl-thumb:hover) .dl-thumb,.dl-card:has(.dl-btn:hover) .dl-thumb{background:#e7e4dc}.dl-card:has(.dl-thumb:hover) .dl-btn:not(.is-done){background:var(--accent-hover);border-color:var(--accent-hover)}.dl-card:has(.dl-btn:hover) .dl-thumb img{transform:translateY(-2px)}.is-landscape .dl-card:has(.dl-btn:hover) .dl-thumb img{transform:rotate(90deg)translate(-2px)}.dl-thumb:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.dl-thumb:hover img{transform:translateY(-2px)}.is-landscape .dl-thumb:hover img{transform:rotate(90deg)translate(-2px)}.dl-name{margin:0;font-size:17px;font-weight:600}.dl-meta{color:var(--muted);margin:2px 0 0;font-size:13px}.dl-actions{align-items:center;gap:8px;margin-top:12px;display:flex}.dl-btn{border:1px solid var(--accent);border-radius:var(--radius);background:var(--accent);color:#fff;min-height:40px;font:600 14px/1 var(--font);white-space:nowrap;flex:1;justify-content:center;align-items:center;gap:7px;padding:0 14px;text-decoration:none;display:inline-flex}.dl-btn:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}.dl-size{opacity:.75;font-size:12px;font-weight:400}.dl-done{display:none}.dl-btn.is-done{background:var(--surface);color:var(--accent)}.dl-btn.is-done>:not(.dl-done){display:none}.dl-btn.is-done .dl-done{align-items:center;gap:6px;display:inline-flex}.dl-btn-ghost{background:var(--surface);color:var(--accent);border-color:#c9d1e6}.dl-btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:#eef1f8}.dl-edit{border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);width:40px;height:40px;color:var(--text);flex:none;justify-content:center;align-items:center;display:inline-flex;position:relative}.dl-edit:hover{border-color:var(--text)}.dl-edit .i{stroke-width:1.5px;width:16px;height:16px}.dl-edit:hover:after{content:attr(data-tip);border-radius:var(--radius);background:var(--text);color:#fff;white-space:nowrap;pointer-events:none;padding:6px 8px;font-size:12px;position:absolute;bottom:calc(100% + 6px);right:0}.dl-table{border-collapse:collapse;width:100%;max-width:760px}.dl-table th,.dl-table td{border-bottom:1px solid var(--rule);text-align:left;padding:12px 10px 12px 0}.dl-table thead th{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-top:0;font-size:12px;font-weight:600}.dl-table tbody th{width:34%;font-size:15px;font-weight:600}.dl-table tbody th span{color:var(--muted);font-size:13px;font-weight:400;display:block}.dl-table td{width:22%}.dl-table .dl-btn{width:100%}.dl-foot{color:var(--muted);margin:14px 0 0;font-size:14px}@media (width<=760px){.dl-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 14px}.dl-size,.dl-table thead{display:none}.dl-table tbody tr{border-bottom:1px solid var(--rule);grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:14px 0;display:grid}.dl-table tbody th,.dl-table td{border:0;width:auto;padding:0}.dl-table tbody th{grid-column:1/-1}.dl-table .dl-btn{gap:5px;padding:0 6px;font-size:13px}}.papers a:hover .thumb{transform:translateY(-2px)}.papers a:hover .paper-name{text-underline-offset:2px;text-decoration:underline}.link-list{margin:0;padding:0;list-style:none}.link-list li{border-bottom:1px solid var(--rule);padding:10px 0}.link-list li:first-child{border-top:1px solid var(--rule)}.page{padding:40px 0 64px}.page h1{margin-bottom:12px;font-size:30px}.page .meta{color:var(--faint);margin:0 0 28px;font-size:13px}.site-footer{border-top:1px solid var(--rule);color:var(--muted);margin-top:32px;padding:36px 0 48px;font-size:14px}.footer-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:28px;display:grid}.footer-title{color:var(--text);margin:0 0 10px;font-size:13px;font-weight:600}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li{margin-bottom:6px}.site-footer a{color:var(--muted);text-decoration:none}.site-footer a:hover{color:var(--text);text-decoration:underline}.fineprint{color:var(--faint);margin:32px 0 0;font-size:13px}.consent{z-index:50;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius);max-width:560px;margin:0 auto;padding:16px;font-size:14px;position:fixed;bottom:16px;left:16px;right:16px;box-shadow:0 8px 28px #0000001f}.consent[hidden]{display:none}.consent p{color:var(--muted);margin:0 0 12px}.consent-actions{justify-content:flex-end;gap:8px;display:flex}.consent .btn{padding:10px 18px}@media print{html,body{background:#fff!important;margin:0!important}.site-header,.site-footer,.no-print,.tool-head,.panel,.sheet-caption,main>:not(.tool-section){display:none!important}.tool-section,.tool-section>.wrap{max-width:none!important;margin:0!important;padding:0!important}.tool{display:block!important}.desk{background:0 0!important;padding:0!important;display:block!important;position:static!important}.sheet{break-inside:avoid;box-shadow:none!important;aspect-ratio:auto!important}}