:root {
  --ink: #1a1a1a;
  --paper: #fff;
  --teal: #21b4ce;
  --link: #006477;
  --gold: #f9b81e;
  --coral: #e76981;
  --muted: #555;
  --line: #dedede;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 2rem; }
body { margin: 0; font-family: "Open Sans", sans-serif; color: var(--ink); background: var(--paper); font-size: 1.0625rem; line-height: 1.75; }
a { color: var(--link); text-underline-offset: .22em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--link); outline-offset: 5px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { font-family: "Montserrat", sans-serif; line-height: 1.2; text-wrap: balance; }
p { margin: 0 0 1rem; }
.wrap { width: min(1160px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: absolute; top: -100px; left: 20px; z-index: 3; padding: 12px 20px; color: #fff; background: var(--link); }
.skip-link:focus { top: 12px; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 94px; }
.logo { flex: 0 0 auto; }
.logo img { width: 155px; height: 59px; object-fit: contain; }
.site-nav { display: flex; gap: 26px; align-items: center; }
.site-nav a { color: var(--ink); font-size: .9375rem; font-weight: 600; padding-block: 10px; text-decoration: none; }
.site-nav a[aria-current] { color: var(--link); border-bottom: 3px solid var(--teal); }
.site-nav a:hover { color: var(--link); }
.course-link { color: var(--ink); font-size: .875rem; font-weight: 700; background: var(--gold); padding: 12px 18px; text-decoration: none; border-radius: 4px; }
.course-link:hover { background: #f3c64f; }
.preview-notice { padding: 8px 24px; background: #fff2ce; text-align: center; font-size: .8125rem; color: #59400a; }
main { padding-bottom: 80px; }
.blog-intro { display: grid; grid-template-columns: 1.3fr 1fr; align-items: center; gap: 80px; padding: 60px 0 52px; }
.blog-name { color: var(--link); font-size: 1rem; font-weight: 600; margin-bottom: 20px; }
.blog-intro h1 { font-size: clamp(2.4rem, 4.3vw, 3.55rem); letter-spacing: -.045em; line-height: 1.08; font-weight: 800; margin: 0 0 24px; }
.blog-intro p:last-child { max-width: 40ch; color: var(--muted); font-size: 1.125rem; line-height: 1.65; }
.blog-intro figure { margin: 0; position: relative; padding: 0 10px 10px 0; }
.blog-intro figure::before { content: ""; position: absolute; inset: 12px 0 34px 12px; background: var(--teal); border-radius: 4px 68px 4px 4px; }
.blog-intro img { position: relative; width: 100%; height: 310px; object-fit: cover; object-position: 50% 20%; border-radius: 4px 68px 4px 4px; }
.blog-intro figcaption { position: relative; margin-top: 14px; font-size: .75rem; color: var(--muted); background: white; }
.topic-nav { display: flex; flex-wrap: wrap; gap: 10px 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 16px 0; }
.topic-nav a { display: inline-flex; align-items: center; min-height: 36px; text-decoration: none; font-size: .875rem; color: var(--muted); }
.topic-nav a[aria-current] { font-weight: 700; color: var(--ink); text-decoration: underline; text-decoration-color: var(--teal); text-decoration-thickness: 3px; }
.topic-nav a:hover { color: var(--link); text-decoration: underline; }
.posts { display: grid; grid-template-columns: 1fr 1fr; column-gap: 72px; }
.post-summary { padding: 36px 0 40px; border-bottom: 1px solid var(--line); }
.topics { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: .8125rem; font-weight: 600; }
.topics a { color: var(--link); }
.post-summary h2 { margin: 14px 0 18px; font-size: clamp(1.5rem, 2.3vw, 1.9rem); font-weight: 700; letter-spacing: -.025em; }
.post-summary h2 a { color: var(--ink); text-decoration: none; }
.post-summary h2 a:hover { color: var(--link); text-decoration: underline; }
.post-summary p { color: var(--muted); max-width: 56ch; font-size: 1rem; }
.summary-meta { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: .8125rem; color: var(--muted); margin-top: 22px; }
.featured { grid-column: 1 / -1; padding: 40px 0 40px 32px; border-left: 5px solid var(--coral); margin-top: 32px; }
.featured h2 { font-size: clamp(1.9rem, 3.5vw, 2.65rem); max-width: 25ch; }
.featured p { max-width: 68ch; font-size: 1.0625rem; }
.post-cover { display: block; margin-bottom: 24px; overflow: hidden; border-radius: 4px; }
.post-cover img { width: 100%; aspect-ratio: 3 / 2; height: auto; object-fit: cover; }
.featured.has-cover { display: grid; grid-template-columns: 1fr 1.05fr; align-items: center; gap: 40px; padding: 0 0 32px; border-left: 0; }
.featured.has-cover .post-cover { margin-bottom: 0; }
.featured.has-cover h2 { font-size: clamp(1.8rem, 3vw, 2.3rem); }
.article-cover { margin: 32px 0 0; }
.article-cover img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; border-radius: 4px; }
.article-cover figcaption { font-size: .8125rem; color: var(--muted); margin-top: 10px; }
.author-card { display: flex; align-items: center; gap: 28px; margin: 56px 0 0; padding: 30px 0; max-width: 850px; }
.author-card img { width: 112px; height: 112px; flex: 0 0 auto; object-fit: cover; object-position: 50% 32%; border-radius: 50%; }
.author-card h2 { margin: 0 0 4px; font-size: 1.2rem; }
.author-card p { font-size: .9375rem; max-width: 64ch; margin-bottom: 0; }
.author-card .author-role { color: var(--link); font-size: .8125rem; margin-bottom: 8px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 10px; padding: 28px 0 32px; font-size: .8125rem; color: var(--muted); }
.breadcrumbs a { color: var(--muted); }
.archive-intro { max-width: 780px; padding: 8px 0 34px; }
.archive-intro h1 { font-size: clamp(2.3rem, 5vw, 3.25rem); letter-spacing: -.035em; margin: 0 0 18px; }
.archive-intro p { color: var(--muted); }
.article-layout { display: grid; grid-template-columns: 200px minmax(0, 720px); column-gap: 64px; }
.article-header { grid-column: 2; padding-bottom: 36px; }
.article-header h1 { font-size: clamp(2rem, 3.8vw, 3.05rem); line-height: 1.15; font-weight: 800; letter-spacing: -.035em; margin: 20px 0 22px; }
.article-deck { color: var(--muted); font-size: 1.125rem; line-height: 1.65; }
.byline { display: flex; align-items: center; gap: 14px; margin-top: 28px; font-size: .875rem; }
.byline img { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; object-position: 50% 30%; }
.byline span, .reading-meta time { display: block; color: var(--muted); font-size: .75rem; }
.byline a { font-weight: 700; }
.reading-meta { margin-left: auto; text-align: right; }
.article-sidebar { padding-top: 12px; font-size: .8125rem; }
.article-sidebar nav { position: sticky; top: 32px; }
.article-sidebar p { font-weight: 700; }
.article-sidebar ol { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--gold); }
.article-sidebar li { padding: 0 0 14px 16px; line-height: 1.5; }
.article-sidebar a { color: var(--muted); text-decoration: none; }
.article-sidebar a:hover { color: var(--link); text-decoration: underline; }
.article-body { min-width: 0; }
.prose { font-size: 1.125rem; line-height: 1.85; overflow-wrap: break-word; }
.prose > :first-child { margin-top: 0; }
.prose p { margin: 0 0 1.4em; }
.prose h2 { font-size: 1.65rem; letter-spacing: -.02em; margin: 2em 0 .8em; scroll-margin-top: 24px; }
.prose h3 { font-size: 1.3rem; margin: 1.7em 0 .8em; }
.prose ol, .prose ul { padding-left: 1.4em; margin: 1em 0 1.5em; }
.prose li { padding-left: .25em; margin-bottom: .8em; }
.prose li::marker { font-weight: 700; color: var(--link); }
.prose blockquote { margin: 1.5em 0; padding: 0 0 0 1.2em; border-left: 3px solid var(--gold); }
.prose pre, .prose table { max-width: 100%; overflow-x: auto; display: block; }
.tag-list { display: flex; gap: 10px 16px; align-items: center; flex-wrap: wrap; padding-top: 26px; margin-top: 38px; border-top: 1px solid var(--line); font-size: .8125rem; }
.tag-list span { color: var(--muted); }
.tag-list a { padding: 5px 12px; background: #edf8fa; border-radius: 4px; }
.article-body .author-card { border-bottom: 1px solid var(--line); margin-top: 24px; padding: 30px 0; }
.related { margin-top: 56px; }
.related > h2 { font-size: 1.75rem; margin: 0; }
.back-link { display: inline-block; margin-top: 32px; font-weight: 600; }
.empty { grid-column: 1 / -1; padding: 40px 0; }
.site-footer { background: #f4f4f4; border-top: 5px solid var(--teal); padding: 40px 0 24px; font-size: .875rem; }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 40px; }
.footer-name { font-family: "Montserrat", sans-serif; font-size: 1.5rem; color: var(--ink); font-weight: 800; text-decoration: none; }
.footer-inner p { color: var(--muted); margin-top: 12px; }
.footer-inner nav a { display: block; margin-bottom: 8px; }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; border-top: 1px solid var(--line); margin-top: 32px; padding-top: 22px; font-size: .75rem; color: var(--muted); }
.footer-bottom nav { display: flex; gap: 20px; }
@media (max-width: 1000px) {
  .course-link { display: none; }
  .blog-intro { gap: 40px; }
  .article-layout { grid-template-columns: 150px minmax(0, 1fr); column-gap: 36px; }
  .posts { column-gap: 40px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 40px); }
  .header-inner { flex-wrap: wrap; justify-content: center; gap: 0; padding-top: 12px; }
  .logo img { width: 140px; height: 50px; }
  .site-nav { width: 100%; justify-content: center; gap: 24px; padding: 6px 0; }
  .site-nav a { font-size: .8125rem; }
  .blog-intro { grid-template-columns: 1fr; gap: 24px; padding: 34px 0 24px; }
  .blog-name { margin-bottom: 14px; font-size: .875rem; }
  .blog-intro h1 { font-size: clamp(2.15rem, 7.7vw, 3rem); }
  .blog-intro p:last-child { font-size: 1rem; max-width: none; }
  .blog-intro img { height: 225px; object-position: 50% 20%; border-top-right-radius: 48px; }
  .topic-nav { gap: 4px 18px; padding: 10px 0; }
  .topic-nav a { min-height: 40px; font-size: .8125rem; }
  .posts { grid-template-columns: 1fr; }
  .featured { padding: 8px 0 26px 18px; margin-top: 30px; }
  .featured h2 { font-size: 1.8rem; }
  .featured.has-cover { display: block; padding-bottom: 26px; }
  .featured.has-cover .post-cover { margin-bottom: 22px; }
  .post-summary { padding-block: 26px; }
  .author-card { align-items: flex-start; gap: 18px; margin-top: 24px; }
  .author-card img { width: 72px; height: 72px; }
  .author-card p { font-size: .875rem; }
  .article-layout { display: block; }
  .article-header { padding-bottom: 24px; }
  .article-header h1 { font-size: clamp(1.95rem, 7.2vw, 2.7rem); }
  .article-deck { font-size: 1rem; }
  .byline { flex-wrap: wrap; }
  .reading-meta { width: 100%; display: flex; gap: 16px; margin: 0; text-align: left; }
  .article-sidebar { padding: 12px 0 28px; }
  .article-sidebar nav { position: static; }
  .article-sidebar ol { display: flex; flex-wrap: wrap; column-gap: 16px; }
  .article-sidebar li { padding: 0 0 8px 12px; }
  .prose { font-size: 1.0625rem; line-height: 1.8; }
  .prose h2 { font-size: 1.5rem; }
  .breadcrumbs { padding: 24px 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 20px; }
  main { padding-bottom: 52px; }
}
@media (max-width: 360px) { .site-nav { gap: 18px; } .byline span { max-width: 190px; } }