/* Shared design: true white, ink, cobalt. Native HTML remains readable without JS. */
:root{--paper:#fff;--ink:#151719;--muted:#606978;--accent:#2458e8;--line:#dfe2e7;--wash:#f4f6f9;--heading:Arial,"Segoe UI",sans-serif;--body:Arial,"Segoe UI",sans-serif;--code:ui-monospace,"Cascadia Code",Consolas,monospace;--width:1240px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--body);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:5px;text-decoration-thickness:1px}
a:hover{text-decoration:underline}
::selection{background:#dbe5ff;color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:5px}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-family:var(--heading);line-height:1.15;letter-spacing:-.035em;font-weight:700;overflow-wrap:break-word}
p+p{margin-top:18px}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0}.arrow{width:21px;height:21px}
bdi,code{unicode-bidi:isolate}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.skip-link{position:fixed;inset-block-start:10px;inset-inline-start:20px;padding:12px 18px;z-index:100;background:var(--ink);color:white;transform:translateY(-160%)}.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{width:min(calc(100% - 96px),var(--width));margin:auto;min-height:82px;display:flex;align-items:center;gap:40px}
.wordmark,.footer-name{font-weight:750;color:var(--ink);text-decoration:none;white-space:nowrap}.wordmark{font-size:26px;letter-spacing:-.05em}
.primary-nav{display:flex;gap:32px;margin-inline-start:auto;align-self:stretch}
.primary-nav a{display:flex;align-items:center;position:relative;color:var(--muted);text-decoration:none;font-size:15px;font-weight:500;min-height:44px}
.primary-nav a[aria-current=page]{color:var(--accent)}
.primary-nav a[aria-current=page]::after{content:"";position:absolute;bottom:20px;height:2px;inset-inline:0;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:30px;font-size:15px}.header-actions a{min-height:44px;display:flex;align-items:center;text-decoration:none}.language-switch{border-inline-start:1px solid var(--line);padding-inline-start:30px;color:var(--ink)}
.portfolio-shell{width:min(calc(100% - 96px),var(--width));margin:auto}
.hero{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:64px;align-items:center;padding:80px 0 72px}
.hero h1{font-size:clamp(3rem,6.1vw,5.4rem);line-height:1.02;letter-spacing:-.062em}
.hero-intro{font-size:21px;line-height:1.55;margin-top:28px;max-width:62ch}
.page-index{border-inline-start:1px solid var(--line);padding-inline-start:32px}
.page-index a{display:flex;gap:24px;align-items:center;min-height:83px;text-decoration:none;color:var(--ink);font-size:25px;font-weight:700;border-bottom:1px solid var(--line)}.page-index a:last-child{border:0}.page-index a:hover{color:var(--accent)}
.page-index span{font:18px var(--code);color:var(--muted);font-weight:400}
.stats-section{border-block:1px solid var(--line);padding:27px 0 32px}
.stats-heading{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:27px}.stats-heading h2{font-size:21px;letter-spacing:-.02em}.stats-heading p{font-size:13px;color:var(--muted)}
.stats-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));margin:0}.stats-grid>div{display:flex;flex-direction:column-reverse;border-inline-start:1px solid var(--line);padding-inline:32px}.stats-grid>div:first-child{border:0;padding-inline-start:0}
.stats-grid dt{color:var(--muted);font-size:15px;margin-top:8px}.stats-grid dd{font-size:62px;font-weight:700;letter-spacing:-.07em;line-height:1;margin:0;font-variant-numeric:tabular-nums}.stats-grid>div:first-child dd{color:var(--accent)}
.portfolio-section{padding:64px 0 0}
.section-heading{display:flex;justify-content:space-between;align-items:baseline;gap:24px;margin-bottom:28px}.section-heading h2{font-size:52px;letter-spacing:-.05em}.section-heading>p,.section-heading>div>p{font-size:15px;color:var(--muted)}.section-heading>div>p{margin-top:12px;font-size:18px}
.research-list{border-bottom:1px solid var(--line)}
.report-row{display:grid;grid-template-columns:48px minmax(0,1fr);gap:22px;border-top:1px solid var(--line);padding:27px 0 20px}
.row-number{font:13px/1.7 var(--code);color:var(--muted);padding-top:3px;direction:ltr}
.research-item{min-width:0}
.item-main{display:grid;grid-template-areas:"meta outcome" "title outcome" "summary summary";grid-template-columns:minmax(0,1fr) auto;gap:9px 28px}
.item-main h3{grid-area:title;font-size:25px;line-height:1.25;max-width:42ch;letter-spacing:-.025em}
.item-meta{grid-area:meta;color:var(--muted);font-size:12px;line-height:1.6;width:fit-content;max-width:100%;margin:0}
.item-summary{grid-area:summary;font-size:16px;line-height:1.7;max-width:86ch;margin:3px 0 0;color:#404753}
.item-outcome{grid-area:outcome;margin:0;align-self:start}
.status{display:inline-block;color:var(--accent);font-size:12px;font-weight:700;line-height:1.7;white-space:normal;border:1px solid #dce5ff;background:#f4f7ff;padding:3px 9px;border-radius:3px}
.status--duplicate{color:#65562e;background:#faf8f1;border-color:#e9e2cb}.status--wontfix,.status--informative{color:#606978;border-color:var(--line);background:var(--wash)}
.item-actions{display:flex;flex-wrap:wrap;gap:20px;margin-top:8px}
.text-link{display:inline-flex;align-items:center;gap:10px;min-height:44px;font-size:14px;font-weight:500;text-decoration:none;white-space:nowrap}
details{margin-top:6px}
summary{display:flex;align-items:center;justify-content:space-between;gap:24px;cursor:pointer;list-style:none;color:var(--accent);font-size:13px;font-weight:500;min-height:44px;padding:8px 0}
summary::-webkit-details-marker{display:none}
summary::after{content:"";width:8px;height:8px;border-inline-end:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-inline:4px;flex-shrink:0}
details[open]>summary::after{transform:rotate(225deg)}
summary:hover{text-decoration:underline;text-underline-offset:4px}
.report-details[open]{background:var(--wash);padding:0 24px;margin-top:12px}.report-details[open]>summary{border-bottom:1px solid var(--line)}
.story-content{padding:2px 0 20px}.story-points{margin:0}.story-points>div{display:grid;grid-template-columns:130px minmax(0,1fr);gap:25px;padding:18px 0;border-bottom:1px solid var(--line)}.story-points>div:last-child{border:0}.story-points dt{font-size:13px;font-weight:700}.story-points dd{font-size:15px;line-height:1.8;margin:0;max-width:83ch;overflow-wrap:anywhere}.disclosure-note{font-size:12px;color:var(--muted);margin-top:12px}
.secondary-reports{margin-top:42px}.subsection-heading{display:flex;align-items:baseline;justify-content:space-between;gap:24px;margin-bottom:18px}.subsection-heading h3{font-size:24px;letter-spacing:-.02em}.subsection-heading p{font-size:14px;color:var(--muted)}
.challenge-list{border-bottom:1px solid var(--line)}.challenge-row{display:grid;grid-template-columns:48px minmax(0,1fr);gap:22px;padding:22px 0 12px;border-top:1px solid var(--line)}.challenge-body{min-width:0}
.challenge-overview{display:grid;grid-template-columns:1fr 1fr 44px;gap:24px;align-items:center}.challenge-overview h3{font-size:25px;letter-spacing:-.03em}.challenge-overview h3 a{color:var(--ink);text-decoration:none}.challenge-overview h3 a:hover{color:var(--accent)}.challenge-meta{font:12px/1.6 var(--code);color:var(--muted);margin:0}.article-arrow{width:44px;height:44px;display:flex;align-items:center;justify-content:center}.article-arrow:hover{background:var(--wash)}
.challenge-row .report-details>summary{width:fit-content;gap:14px;min-height:36px;font-size:12px}.challenge-row .report-details[open]>summary{width:100%;min-height:44px}
.pwa-section{padding-bottom:72px}.pwa-feature{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;min-height:265px;background:var(--ink);padding:40px;color:white;gap:25px}.pwa-feature>div{position:relative;z-index:1;max-width:750px}.pwa-feature h3{font-size:44px;line-height:1.15;letter-spacing:-.045em}.pwa-feature p{font-size:18px;color:#d2d5dc;margin-top:18px;max-width:54ch}.pwa-link{display:inline-flex;align-items:center;gap:12px;color:#fff;text-decoration:underline;text-decoration-color:#7494ff;text-decoration-thickness:2px;min-height:44px;margin-top:18px;font-size:16px;font-weight:700}.pwa-type{align-self:flex-end;font-size:150px;line-height:.8;letter-spacing:-.08em;font-weight:800;color:#34373d;direction:ltr;position:absolute;inset-inline-end:20px;bottom:-3px;pointer-events:none}.pwa-feature>div{max-width:75%}
.anchor-alias{scroll-margin-top:110px}
.site-footer{border-top:1px solid var(--line)}.site-footer>div{width:min(calc(100% - 96px),var(--width));margin:auto;min-height:104px;display:flex;align-items:center;gap:28px;flex-wrap:wrap;padding:20px 0;font-size:13px}.footer-name{font-size:16px}.footer-email{margin-inline-start:auto;color:var(--muted);text-decoration:none}.profile-links{display:flex;gap:20px;flex-wrap:wrap}.profile-links a,.back-top{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}.back-top{font-size:12px;color:var(--muted)}
.about-hero{display:grid;grid-template-columns:1.4fr 1fr;gap:70px;align-items:center;padding:62px 0 58px;border-bottom:1px solid var(--line)}.about-hero h1{font-size:clamp(3rem,5.8vw,5rem);line-height:1.05;letter-spacing:-.065em}.about-hero>p{font-size:27px;line-height:1.45;max-width:27ch}
.about-background{display:grid;grid-template-columns:1.4fr 1fr;gap:70px;padding:36px 0 44px;border-bottom:1px solid var(--line)}.about-background h2{font-size:29px;margin-bottom:20px}.bio-copy{font-size:17px;max-width:65ch}.bio-copy p+p{margin-top:22px}
.background-index{border-inline-start:1px solid var(--line);padding-inline-start:42px;margin:0}.background-index>div{padding:14px 0 22px;border-bottom:1px solid var(--line)}.background-index>div:last-child{border:0}.background-index dt{font-size:18px;font-weight:700}.background-index dd{margin:3px 0 0;font-size:16px;color:var(--muted)}
.writing-section{padding:42px 0 64px}.writing-section .section-heading h2{font-size:32px;letter-spacing:-.03em}.writing-lead{background:var(--wash);padding:28px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:32px}.writing-meta{font:12px/1.6 var(--code);color:var(--muted);margin-bottom:8px}.writing-lead h3{font-size:26px;line-height:1.3}.writing-lead h3 a,.writing-row h3 a{color:var(--ink);text-decoration:none}.writing-lead h3 a:hover,.writing-row h3 a:hover{color:var(--accent)}.writing-lead>div>p:last-child{font-size:16px;color:var(--muted);margin-top:10px}.writing-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;padding:24px 28px;border-bottom:1px solid var(--line)}.writing-row h3{font-size:22px;line-height:1.3}
html[lang=he] h1,html[lang=he] h2,html[lang=he] h3{letter-spacing:-.035em}html[lang=he] .hero h1{line-height:1.12}html[lang=he] .wordmark{letter-spacing:-.04em}html[lang=he] .row-number{text-align:right}html[lang=he] .pwa-type{inset-inline-end:18px}.section-heading h2[dir=ltr]{text-align:start}
@media(max-width:1100px){.hero{gap:40px;grid-template-columns:minmax(0,1fr) 210px}.hero h1{font-size:clamp(3rem,6.2vw,4.9rem)}.page-index{padding-inline-start:24px}.hero-intro{font-size:19px}.header-inner{gap:26px}.header-actions{gap:22px}.about-hero,.about-background{gap:40px}.about-hero>p{font-size:23px}.pwa-feature h3{font-size:39px}.pwa-type{font-size:120px}.challenge-overview{grid-template-columns:1fr 1fr 38px;gap:18px}}
@media(max-width:800px){html{scroll-padding-top:110px}.header-inner,.portfolio-shell,.site-footer>div{width:calc(100% - 48px)}.header-inner{display:grid;grid-template-columns:1fr auto;gap:0 20px;padding:8px 0;min-height:100px}.wordmark{font-size:22px}.primary-nav{grid-row:2;grid-column:1/-1;margin:0;gap:28px;min-height:38px}.primary-nav a{min-height:38px;font-size:14px}.primary-nav a[aria-current=page]::after{bottom:1px}.header-actions{grid-column:2;grid-row:1;font-size:13px;gap:18px}.language-switch{padding:0;border:0}.hero{grid-template-columns:minmax(0,1fr);padding:46px 0 34px;gap:30px}.hero h1{font-size:clamp(2.9rem,8vw,4.7rem)}.hero-intro{font-size:18px;margin-top:23px}.page-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:0;border-top:1px solid var(--line);padding:0}.page-index a{gap:12px;font-size:19px;min-height:64px;border:0}.page-index span{font-size:12px}.stats-heading{display:block;margin-bottom:24px}.stats-heading h2{font-size:18px}.stats-heading p{font-size:12px;margin-top:8px}.stats-grid dd{font-size:52px}.stats-grid>div{padding-inline:20px}.stats-grid dt{font-size:13px}.portfolio-section{padding-top:44px}.section-heading h2{font-size:43px}.section-heading>p{font-size:13px}.report-row,.challenge-row{grid-template-columns:28px minmax(0,1fr);gap:15px}.item-main{grid-template-areas:"meta" "title" "outcome" "summary";grid-template-columns:minmax(0,1fr);gap:10px}.item-main h3{font-size:24px}.item-summary{font-size:15px}.item-outcome{margin-top:0}.story-points>div{grid-template-columns:100px minmax(0,1fr);gap:16px}.subsection-heading{display:block}.subsection-heading p{margin-top:8px}.challenge-overview{grid-template-columns:minmax(0,1fr) 40px;gap:5px 16px}.challenge-overview h3{font-size:23px}.challenge-meta{grid-column:1;grid-row:2;font-size:11px}.article-arrow{grid-column:2;grid-row:1/3}.pwa-section{padding-bottom:48px}.pwa-feature{padding:32px;min-height:265px}.pwa-feature>div{max-width:90%}.pwa-feature h3{font-size:36px}.pwa-feature p{font-size:17px}.pwa-type{font-size:115px;opacity:.7}.footer-email{margin-inline-start:auto}.profile-links{gap:20px}.back-top{margin-inline-start:auto}.site-footer>div{gap:8px 25px}.about-hero{grid-template-columns:minmax(0,1fr);gap:24px;padding:42px 0 34px}.about-hero h1{font-size:clamp(3rem,7vw,4.5rem)}.about-hero>p{font-size:22px;max-width:36ch}.about-background{grid-template-columns:minmax(0,1fr);gap:32px}.background-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:0;padding:0;gap:24px}.background-index>div{border:0;border-top:1px solid var(--line)}.background-index dt{font-size:15px}.background-index dd{font-size:14px}.writing-lead,.writing-row{gap:18px;padding:24px}.writing-lead h3{font-size:24px}.writing-row h3{font-size:20px}}
@media(max-width:540px){.hero h1{font-size:clamp(2.7rem,9vw,3.6rem)}.hero-intro{font-size:17px;max-width:29ch}.page-index a{font-size:17px;gap:9px}.page-index span{font-size:11px}.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 0}.stats-grid>div{padding-inline:24px}.stats-grid>div:nth-child(odd){border:0;padding-inline-start:0}.stats-grid dd{font-size:49px}.stats-heading p{line-height:1.7}.section-heading{display:block;margin-bottom:22px}.section-heading>p{margin-top:12px}.section-heading h2{font-size:39px}.report-row{grid-template-columns:minmax(0,1fr);gap:8px;padding:23px 0 15px}.report-row>.row-number{display:none}.item-main h3{font-size:23px;line-height:1.3}.item-meta{font-size:11px}.item-summary{font-size:15px}.report-details[open]{padding-inline:16px}.story-points>div{grid-template-columns:minmax(0,1fr);gap:8px}.story-points dd{font-size:14px}.challenge-row{grid-template-columns:20px minmax(0,1fr);gap:10px;padding-top:17px}.challenge-overview h3{font-size:22px}.challenge-meta{font-size:10px}.challenge-row .report-details[open]{margin-inline-start:-30px}.pwa-feature{padding:26px;min-height:300px;align-items:flex-start}.pwa-feature>div{max-width:100%}.pwa-feature h3{font-size:33px;max-width:12ch}.pwa-feature p{font-size:16px;max-width:25ch}.pwa-type{font-size:90px;opacity:.45}.site-footer>div{display:grid;grid-template-columns:1fr auto;gap:6px 14px;padding:24px 0}.footer-email{font-size:12px}.profile-links{grid-column:1/-1;gap:22px;font-size:12px}.back-top{grid-column:1/-1;margin:0}.about-hero h1{font-size:clamp(2.6rem,9vw,3.5rem)}.about-hero>p{font-size:21px}.about-background h2{font-size:27px}.bio-copy{font-size:16px}.background-index{grid-template-columns:1fr;gap:0}.background-index>div{padding:16px 0}.background-index>div:last-child{border-top:1px solid var(--line)}.background-index dt{font-size:16px}.writing-section .section-heading h2{font-size:30px}.writing-section .section-heading>div>p{font-size:16px}.writing-section .section-heading>p{font-size:12px}.writing-lead,.writing-row{grid-template-columns:minmax(0,1fr);gap:12px;padding:22px}.writing-row{padding-inline:0}.writing-lead h3{font-size:23px}.writing-row h3{font-size:21px}.writing-meta{font-size:11px}.writing-lead .text-link,.writing-row .text-link{justify-self:start}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.site-header,.page-index,.skip-link,.site-footer{display:none}.portfolio-shell{width:100%}.hero{display:block;padding:0 0 20px}.hero h1{font-size:32pt}.stats-section,.portfolio-section{padding:20px 0}.section-heading h2{font-size:25pt}.report-details::details-content{content-visibility:visible}.report-details>summary{display:none}.pwa-feature{background:white;color:black;border:1px solid #aaa}.pwa-feature p,.pwa-feature a{color:black}.pwa-type{display:none}.about-hero h1{font-size:30pt}h2,h3{break-after:avoid}}
/* Articles retain their existing document structure and English content. */
.writeup-shell{width:min(calc(100% - 48px),820px);margin:auto;padding:30px 0 72px}
.writeup-nav{display:flex;gap:20px;flex-wrap:wrap;align-items:center;margin-bottom:32px}
.back-link,.jump-link{display:inline-flex;align-items:center;min-height:44px;font-size:14px;font-weight:600}
.writeup-header{padding:24px 0 32px;border-bottom:2px solid var(--accent)}
.writeup-header h1{font-size:clamp(2.15rem,5vw,3.75rem);margin:18px 0 24px;overflow-wrap:anywhere}
.writeup-header .intro{font-size:19px}
.writeup-body section{padding:30px 0;border-bottom:1px solid var(--line)}
.writeup-body h2{font-size:2rem}.writeup-body h3{font-size:1.6rem;margin-top:28px}
.writeup-body p,.writeup-body li{overflow-wrap:anywhere}
.writeup-body ul,.writeup-body ol{padding-inline-start:24px}
.writeup-body li+li{margin-top:10px}
.inline-links{display:flex;gap:20px;flex-wrap:wrap}
code{font-family:var(--code);font-size:.84em;direction:ltr;unicode-bidi:isolate}
:not(pre)>code{background:#e6ebe2;color:#234633;padding:2px 4px;overflow-wrap:anywhere;border-radius:2px}
pre{max-width:100%;overflow-x:auto;white-space:pre;padding:20px;background:var(--wash);border:1px solid var(--line);border-inline-start:3px solid var(--accent);font-size:15px;line-height:1.65;tab-size:2}
pre code{font-size:inherit}
.lessons{padding:24px!important;background:var(--wash);border-inline-start:3px solid var(--accent);margin-top:28px}
.writeup-figure{margin:28px 0}.writeup-figure img{width:100%;height:auto}.writeup-figure figcaption{margin-top:10px;color:var(--muted);font-size:13px}
/* Bilingual sample lesson, using the same reading components. */
.lesson-shell{width:min(calc(100% - 48px),860px);margin:auto;padding:28px 0 70px}
.lesson-header{padding:28px 0;border-bottom:1px solid var(--strong-line)}
.lesson-header h1{font-size:clamp(2.3rem,5vw,3.75rem);max-width:23ch}
.lesson-meta{display:flex;flex-wrap:wrap;gap:12px 32px;margin:26px 0 0;color:var(--muted);font-size:14px}
.lesson-section{padding:28px 0;border-bottom:1px solid var(--line)}
.lesson-section h2{font-size:2rem}.lesson-section h3{font-size:1.6rem}
.scenario{margin:24px 0;padding:24px;border-inline-start:3px solid var(--accent);background:var(--wash)}
.scenario p:first-child{font-size:13px;color:var(--muted)}
.answer{padding:10px 0;border-top:1px solid var(--line)}.answer>div{padding:8px 0 18px;max-width:70ch}
.lesson-section ol,.lesson-section ul{padding-inline-start:25px}.lesson-section li+li{margin-top:12px}
.lesson-nav{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:14px}.lesson-nav a{min-height:44px;display:inline-flex;align-items:center}

/* Article typography and mobile reading measure. */
.writeup-header h1{font-weight:700;letter-spacing:-.045em}.writeup-body p+p{margin-top:18px}.writeup-body h2{margin-bottom:20px}.writeup-body h3{margin-bottom:18px}.writeup-body p{margin-block:16px}.writeup-header .intro{margin-top:24px}.writeup-header .item-meta{width:auto}.writeup-header{border-bottom:1px solid var(--line)}.writeup-nav{border-bottom:1px solid var(--line);padding-bottom:16px}.writeup-nav a{font-size:13px}.writeup-body pre{margin-block:24px}.writeup-body .lessons{margin-top:28px}.writeup-body .lessons p{margin-bottom:0}code{color:var(--ink)}:not(pre)>code{background:#edf1f8;color:#23365e}.lesson-header h1{font-size:3rem}.lesson-section p+p{margin-top:18px}.lesson-section h2{margin-bottom:20px}
@media(max-width:540px){.writeup-shell,.lesson-shell{width:calc(100% - 40px)}.writeup-header h1{font-size:2.25rem}.writeup-header .intro{font-size:17px}.writeup-body h2{font-size:1.65rem}.writeup-body p,.writeup-body li{font-size:16px}.writeup-nav{gap:8px 20px}pre{font-size:12px;padding:15px}}
/* Keep technical English headings aligned to the Hebrew reading edge. */
html[lang=he] .section-heading h2[dir=ltr]{text-align:right}
@media(max-width:540px){.page-index{display:flex;justify-content:space-between;gap:12px}.page-index a{font-size:16px;gap:7px}}
/* Final art-direction review: readable evidence and clearly grouped actions. */
.item-meta,.status{font-size:13px}.item-meta,.challenge-meta,.writing-meta{color:#556070}.challenge-meta{font-size:13px}.stats-heading p,.section-heading>p{font-size:14px}
.report-details>summary{justify-content:flex-start;gap:14px}
@media(max-width:800px){.challenge-meta{font-size:12px}}
@media(max-width:540px){.item-meta{font-size:12px}.status{font-size:12px}.background-index{display:none}.stats-heading p,.section-heading>p{font-size:12px}}
/* Original academic writing shares the site's reading typography. */
.architecture-writing{border-top:1px solid var(--line)}.architecture-article .writeup-header h1{line-height:1.25;letter-spacing:-.03em;font-size:clamp(2.2rem,4vw,3.3rem)}.architecture-article .writeup-body{font-size:18px;line-height:1.9}.architecture-article .writeup-body h2{font-size:1.8rem;line-height:1.35;letter-spacing:-.025em}.architecture-figure{padding:20px;background:var(--wash)}.architecture-figure img{max-height:620px;object-fit:contain;margin:auto}.architecture-figure figcaption{font-size:13px;line-height:1.7}.bibliography{font-size:15px;line-height:1.8}.bibliography bdi{overflow-wrap:anywhere}.article-end{padding-top:28px;margin-top:24px;border-bottom:0;border-top:1px solid var(--line)}.lecture-slide{margin:24px 0}.lecture-slide img{width:100%;height:auto;border:1px solid var(--line)}.lecture-slide figcaption{font-size:12px;color:var(--muted);margin-top:8px}.slide-source{margin-top:24px;border-top:1px solid var(--line)}.slide-source>summary{justify-content:flex-start;gap:14px}.architecture-article .writeup-body blockquote{border-inline-start:3px solid var(--accent);margin:24px 0;padding:12px 24px;background:var(--wash)}
@media(max-width:540px){.architecture-article .writeup-header h1{font-size:2.15rem}.architecture-article .writeup-body h2{font-size:1.5rem}.architecture-figure{padding:12px}.architecture-article .writeup-body p{font-size:17px;line-height:1.9}}
.architecture-writing .writing-meta{font-family:var(--body);font-size:13px}

.challenge-availability{display:block;margin-top:4px;font:12px/1.6 var(--body);color:var(--muted)}.challenge-source-note{font-size:14px;color:var(--muted);margin-top:20px}