.content-page{max-width:1160px;min-height:calc(100vh - 220px)}
.content-page h1{font:clamp(42px,6vw,72px)/1.05 Georgia,serif;font-weight:500;margin:18px 0 16px;max-width:760px}
.paper-content{max-width:860px;background:var(--paper);border:1px solid var(--line);padding:38px 44px;margin-top:34px}
.paper-content h2{font:30px/1.15 Georgia,serif;font-weight:500;margin:30px 0 10px}.paper-content h2:first-child{margin-top:0}
.paper-content p,.paper-content li{color:var(--muted)}.paper-content a{color:var(--accent);font-weight:600}.paper-content .resource-links a{font-weight:400}.paper-content .plans{margin:0 0 35px}
.platforms span{display:inline-block;color:var(--muted);border-radius:3px}
@media(max-width:680px){.paper-content{padding:25px 20px}.content-page h1{font-size:44px}}
.skip-link{position:absolute;left:20px;top:-80px;background:var(--accent);color:white;padding:12px;z-index:10}.skip-link:focus{top:12px}
.main-nav .mobile-download{display:none}.site-footer>div{flex-wrap:wrap;max-width:360px}.breadcrumbs,.editorial{font-size:14px;color:var(--muted);overflow-wrap:anywhere}.breadcrumbs a{color:var(--accent)}
.archive-note{padding:20px;border-left:3px solid var(--accent);background:var(--wash);margin-bottom:30px}.paper-content pre{overflow:auto;background:var(--wash);padding:18px;white-space:pre-wrap;overflow-wrap:anywhere}.paper-content img{max-width:100%;height:auto}.paper-content figure{margin:24px 0}.paper-content table{width:100%;border-collapse:collapse;display:block;overflow:auto}.paper-content th,.paper-content td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}.paper-content code{font:14px/1.6 Consolas,monospace}
.paper-content .resource-links a{overflow-wrap:anywhere}.platforms span{border:0;background:transparent;padding:0;font:inherit}.platforms span+span:before{content:'·';margin:0 10px;color:var(--muted)}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.main-nav a{min-height:44px;display:inline-flex;align-items:center}
@media(max-width:900px){.hero{grid-template-columns:1fr}.site-header{gap:16px}.main-nav{gap:12px}.site-footer{flex-wrap:wrap}}
@media(max-width:900px){.main-nav{display:none;position:absolute;left:0;right:0;top:76px;background:#f5f4ef;padding:12px 20px;flex-direction:column;border-bottom:1px solid var(--line)}.main-nav.open{display:flex}.main-nav .mobile-download{display:flex}.menu-toggle{display:block;margin-left:auto;font:inherit;min-height:44px}.site-header>.button{display:none}.resource-links a{flex-direction:column;gap:4px}.resource-links span{text-align:left}.section.content-page{padding-top:50px}}
@media(max-width:680px){.main-nav{top:66px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Content containers must not combine a capped width with viewport-sized gutters. */
.article-share{border-top:1px solid var(--line);margin-top:40px;padding-top:24px}
.article-share>p:first-child{font-weight:600;color:var(--ink)}
.article-share>div{display:flex;flex-wrap:wrap;gap:10px}
.article-share a,.article-share button{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;border:1px solid var(--line);background:var(--paper);color:var(--accent);font:inherit;font-size:14px;text-decoration:none;cursor:pointer}
.article-share a:hover,.article-share button:hover{background:var(--wash)}
.article-share .share-status{font-size:14px;overflow-wrap:anywhere;min-height:24px}
.lesson-contents{padding:20px 24px;background:var(--wash);border-left:3px solid var(--accent);margin-bottom:28px}
.lesson-contents p{margin-top:0;font-weight:600}.lesson-contents ol{margin-bottom:0;padding-left:22px}
.paper-content h2[id]{scroll-margin-top:110px}
.conversion-matrix-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--line);margin:20px 0;overscroll-behavior-x:contain}
.conversion-matrix-scroll:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.paper-content table.conversion-matrix{display:table;min-width:760px;margin:0;font-size:16px}
.conversion-matrix caption{text-align:left;padding:14px 16px;background:var(--wash);color:var(--muted);line-height:1.6}
.conversion-matrix thead{background:var(--wash)}
.paper-content .conversion-matrix td,.paper-content .conversion-matrix thead th{text-align:center}
.paper-content .conversion-matrix th:first-child{text-align:left;position:sticky;left:0;background:var(--paper);z-index:1}
.matrix-check{color:var(--accent);font-size:20px;font-weight:600}
.matrix-scroll-help{color:var(--muted)}
.historical-references{margin-top:36px;border-top:1px solid var(--line);padding-top:24px}
.historical-references summary{font:24px/1.3 Georgia,serif;cursor:pointer;padding:10px 0}
.reading-layout{display:grid;grid-template-columns:224px minmax(0,1fr);gap:32px;margin-top:34px;align-items:start}
.reading-page .reading-intro{margin-left:256px;max-width:860px}
.reading-layout .paper-content{margin-top:0;min-width:0;width:100%}
.reading-sidebar{position:sticky;top:106px;align-self:start;min-width:0}
.reading-contents summary{display:none}
.reading-contents nav{max-height:calc(100dvh - 138px);overflow-y:auto;padding:4px 12px 8px 0;scrollbar-width:thin}
.contents-label{font-size:16px;font-weight:600;margin:0 0 14px;color:var(--ink)}
.reading-contents ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.reading-contents a{display:block;min-height:44px;padding:10px 12px;color:var(--muted);font-size:16px;line-height:1.5;text-decoration:none;border-left:2px solid transparent;margin-left:-1px;overflow-wrap:anywhere}
.reading-contents a:hover{color:var(--accent);background:var(--wash)}
.reading-contents a[aria-current="location"]{color:var(--accent);background:var(--wash);border-left-color:var(--accent);font-weight:600}
.reading-layout h2[id]{scroll-margin-top:110px}
@media(max-width:1099px){
  .reading-layout{grid-template-columns:minmax(0,1fr);gap:20px}
  .reading-page .reading-intro{margin-left:0}
  .reading-sidebar{position:static;max-width:860px}
  .reading-contents{border:1px solid var(--line);background:var(--paper)}
  .reading-contents summary{display:list-item;cursor:pointer;padding:14px 20px;min-height:48px;font-size:16px;font-weight:600;color:var(--accent)}
  .reading-contents nav{max-height:50dvh;padding:0 20px 16px}
  .reading-contents .contents-label{display:none}
}
.section.content-page{width:100%;max-width:1240px;margin-inline:auto;padding:72px 40px}
.content-page:has(.plans) .paper-content{max-width:none}
.content-page:has(.plans) h1{max-width:1000px}
.plans{grid-template-columns:repeat(3,minmax(0,1fr))}
.plans article{min-width:0}
.plans strong{white-space:nowrap;font-size:clamp(32px,3vw,38px)}
.plans strong span{display:inline-block}
.plans p:not(.eyebrow){min-height:0}
.edition-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;margin-bottom:40px;border-block:1px solid var(--line);padding-block:28px}
.edition-summary>div{min-width:0}.edition-summary h2{margin-top:0}.edition-summary .button{color:var(--paper)}
.free-label{display:inline-flex;align-items:center;border:1px solid var(--accent);border-radius:999px;padding:2px 9px;color:var(--accent);font:600 12px/1.35 Arial,system-ui,sans-serif;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}
.recommended-label{display:inline-flex;align-items:center;border:1px solid var(--accent);border-radius:999px;padding:2px 9px;background:var(--accent);color:var(--paper);font:600 12px/1.35 Arial,system-ui,sans-serif;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}
.plans .free-plan{background:var(--paper)}
.plan-comparison-scroll{max-width:100%;overflow-x:auto;border:1px solid var(--line);margin-block:24px}
.plan-comparison-scroll:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.paper-content table.plan-comparison{display:table;min-width:620px;width:100%;margin:0;font-size:16px}
.plan-comparison caption{text-align:left;background:var(--wash);padding:14px 16px;color:var(--ink)}
.plan-comparison thead{background:var(--wash)}.plan-comparison th{text-align:left}.plan-comparison tbody th{width:48%}
.plan-comparison td{vertical-align:top}.paper-content .plans h3{font-size:22px;line-height:1.3}
@media(max-width:680px){
  .plan-comparison-scroll{overflow:visible;border:0}
  .paper-content table.plan-comparison{display:block;min-width:0;width:100%;overflow:visible;font-size:16px}
  .plan-comparison caption{display:block;border:1px solid var(--line)}
  .plan-comparison thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
  .plan-comparison tbody{display:grid;gap:12px;margin-top:12px}
  .plan-comparison tbody tr{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:1px solid var(--line);background:var(--paper)}
  .paper-content .plan-comparison tbody th{grid-column:1/-1;width:auto;padding:12px 14px;background:var(--wash);color:var(--ink);overflow-wrap:break-word}
  .paper-content .plan-comparison tbody td{display:grid;align-content:start;gap:6px;min-width:0;padding:12px;overflow-wrap:break-word;border-bottom:0}
  .plan-comparison tbody td+td{border-left:1px solid var(--line)}
  .plan-comparison tbody td::before{color:var(--muted);font-size:13px;font-weight:700}
  .plan-comparison tbody td:first-of-type::before{content:'Free'}
  .plan-comparison tbody td:last-of-type::before{content:'Trial / Pro'}
}
@media(max-width:680px){.edition-summary{grid-template-columns:1fr;gap:20px}}
.feature-page figure img{display:block;width:100%;height:auto}
.converter-detail{padding:20px;background:var(--paper);border:1px solid var(--line)}
.converter-detail a{color:var(--accent)}
.feature-page .converter-detail img{border:0;box-shadow:none}
.converter-detail figcaption{font-size:14px;line-height:1.6}
@media(max-width:900px){.plans{grid-template-columns:1fr}.section.content-page{padding:56px 28px}}
@media(max-width:680px){.section.content-page{padding:48px 20px}.converter-detail{padding:12px}.plans article{padding:24px}}
.download-packages{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:28px 0}
.download-packages article{min-width:0;border:1px solid var(--line);padding:24px;background:var(--paper)}
.download-packages h3{margin-top:0}
.download-packages details{margin-top:20px}
.download-packages summary{cursor:pointer;min-height:44px;padding-block:8px;color:var(--accent)}
.download-packages code{display:block;overflow-wrap:anywhere;white-space:normal;font-size:13px}
@media(max-width:680px){.download-packages{grid-template-columns:1fr}}
.site-header{background:#f5f4ef;z-index:100}
.main-nav a[aria-current="page"]{color:var(--accent);box-shadow:inset 0 -2px var(--accent)}
body{font-size:16px}
:root{--muted:#606d65}
@media(min-width:901px){.hero{min-height:650px}.hero h1{font-size:clamp(52px,4.5vw,64px)}}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.pricing-page{padding-top:36px!important}
.pricing-page .reading-intro h1{font-size:clamp(40px,4.6vw,58px);max-width:920px;margin:12px 0}
.pricing-page .reading-intro .lede{margin:12px 0;font-size:17px}
.pricing-page .editorial{display:none}
.pricing-page .paper-content{margin-top:18px;padding:28px 32px}
.pricing-page .plans{gap:12px;background:transparent;border:0;align-items:stretch}
.pricing-page .plans article{display:flex;flex-direction:column;border:1px solid var(--line);padding:24px;min-height:260px}
.pricing-page .plans article>a{margin-top:auto;align-self:flex-start}
.pricing-page .plans .featured{border:2px solid var(--accent);background:#e6eee4;box-shadow:0 12px 28px rgba(32,44,41,.12)}
.pricing-page .plans .eyebrow{min-height:28px}
@media(max-width:900px){.pricing-page .plans{grid-template-columns:1fr}.pricing-page .plans article{min-height:0;gap:6px}}
@media(max-width:680px){.pricing-page{padding-top:28px!important}.pricing-page .paper-content{padding:22px 18px}.pricing-page .plans article{padding:22px}.pricing-page .reading-intro h1{font-size:40px}}
.availability-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:24px 0}
.availability-grid article{border:1px solid var(--line);padding:18px;background:var(--wash);min-width:0}
.availability-grid h3{margin:0 0 8px;font:24px/1.2 Georgia,serif}
.availability-grid p{margin:0 0 16px}
.availability-grid strong{display:inline-block;color:var(--accent);font-size:14px}
@media(max-width:680px){.availability-grid{grid-template-columns:1fr}}

/* Keep plan essentials visible; disclose the full comparison and account rules. */
.plan-highlights{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:24px 0}
.plan-highlights section{min-width:0;border-top:2px solid var(--line);padding-top:16px}
.paper-content .plan-highlights h3{font-size:20px;margin:0 0 12px}
.paper-content .plan-highlights p{margin:0}
.pricing-details{border-block:1px solid var(--line);margin:20px 0;padding:0 16px;background:var(--wash)}
.pricing-details>summary{cursor:pointer;min-height:48px;padding:14px 0;color:var(--accent);font-weight:600;line-height:1.5}
.pricing-details>summary:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.pricing-details[open]{padding-bottom:16px}
@media(max-width:680px){.plan-highlights{grid-template-columns:1fr;gap:18px}.pricing-details{padding-inline:12px}}

.writer-example{border:1px solid var(--line);padding:28px;background:var(--wash);min-width:0}
.writer-example ol{padding-left:24px;margin:20px 0}.writer-example li{padding-left:8px;margin:16px 0}
.writer-example p{margin:6px 0}.writer-example .eyebrow{margin-top:0}
.delivery-list>.eyebrow{font-size:13px;padding:0 0 12px;margin:0;color:var(--muted)}