:root {
  color-scheme: light dark;
  --background: #fafafa;
  --surface: #ffffff;
  --text: #202124;
  --muted: #62666d;
  --border: #dfe1e5;
  --accent: #4f46e5;
  --accent-hover: #3730a3;
  --accent-soft: #eeefff;
  --code-background: #f3f4f6;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 18px;
  line-height: 1.7;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  color: var(--text);
}

body {
  margin: 0 auto;
  max-width: 1160px;
  min-height: 100vh;
  padding: 0 2rem;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--accent-hover);
}

.site-header {
  align-items: baseline;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  padding: 1.5rem 0 1rem;
}

.site-name {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 750;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.35rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 760;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.25rem, 8vw, 3.6rem);
  margin: 0 0 1.5rem;
}

h2 {
  font-size: 1.65rem;
  margin-top: 3rem;
}

h3 {
  font-size: 1.25rem;
  margin-top: 2.25rem;
}

.lede {
  color: var(--muted);
  font-size: 1.2rem;
  max-width: 42rem;
}

.article-header,
.page-header {
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
  padding-bottom: 2rem;
}

.post-layout {
  align-items: start;
  display: grid;
  gap: clamp(2.5rem, 5vw, 5rem);
  grid-template-columns: minmax(0, 1fr) 14rem;
}

.post-layout article {
  min-width: 0;
}

.article-toc {
  border-left: 1px solid var(--border);
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  padding-left: 1.25rem;
  position: sticky;
  top: 1.5rem;
}

.article-toc-title {
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  margin: 0 0 0.8rem;
  text-transform: uppercase;
}

.article-toc nav {
  display: block;
}

.article-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-toc ul ul {
  margin-top: 0.45rem;
  padding-left: 0.8rem;
}

.article-toc li + li {
  margin-top: 0.55rem;
}

.article-toc a {
  color: var(--muted);
  display: block;
  font-size: 0.76rem;
  line-height: 1.35;
  text-decoration: none;
}

.article-toc a:hover {
  color: var(--accent);
}

.prose :is(h1, h2, h3, h4) {
  scroll-margin-top: 1.5rem;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.article-meta,
.post-list time {
  color: var(--muted);
  font-size: 0.9rem;
}

.prose p,
.prose li {
  max-width: 68ch;
}

.prose img,
.prose video {
  height: auto;
  max-width: 100%;
}

blockquote {
  border-left: 4px solid var(--accent);
  color: var(--muted);
  margin: 2rem 0;
  padding: 0.15rem 0 0.15rem 1.25rem;
}

code {
  background: var(--code-background);
  border-radius: 0.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82em;
  padding: 0.1rem 0.3rem;
}

pre {
  background: var(--code-background);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  line-height: 1.5;
  overflow-x: auto;
  padding: 1rem;
}

pre code {
  background: transparent;
  padding: 0;
}

table {
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  width: 100%;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0.9rem;
  text-align: left;
}

.post-list article {
  border-bottom: 1px solid var(--border);
  padding: 1.75rem 0;
}

.post-list h2 {
  font-size: 1.5rem;
  margin: 0.25rem 0 0.5rem;
}

.post-list p {
  color: var(--muted);
  margin: 0;
}

.post-list-meta {
  align-items: baseline;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font-size: 0.8rem;
  gap: 0.35rem;
}

.post-publication {
  color: var(--accent);
  font-weight: 700;
}

.post-navigation {
  border-top: 1px solid var(--border);
  justify-content: space-between;
  margin-top: 4rem;
  padding-top: 1.5rem;
}

.post-navigation a:last-child {
  margin-left: auto;
  text-align: right;
}

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 5rem;
  padding: 1.5rem 0 3rem;
}

.hero {
  align-items: center;
  display: grid;
  gap: clamp(2rem, 6vw, 6rem);
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.48fr);
  min-height: min(680px, 68vh);
  padding: 0 0 clamp(5rem, 10vw, 9rem);
}

.hero h1 {
  font-size: clamp(3rem, 7vw, 6.4rem);
  margin-bottom: 1.5rem;
  max-width: 11ch;
}

.hero-lede {
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  max-width: 58ch;
}

.headshot {
  aspect-ratio: 1;
  border-radius: 50%;
  box-shadow: 1.25rem 1.25rem 0 var(--accent-soft);
  height: auto;
  width: 100%;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  border: 1px solid var(--accent);
  border-radius: 999px;
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.65rem 1.05rem;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: var(--background);
}

.button.primary:hover {
  background: var(--accent-hover);
  color: var(--background);
}

.button.secondary {
  background: transparent;
  color: var(--accent);
}

.text-link {
  font-weight: 700;
  text-decoration: none;
}

.featured-book {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  display: grid;
  gap: clamp(2rem, 7vw, 6rem);
  grid-template-columns: minmax(200px, 0.65fr) minmax(0, 1fr);
  overflow: hidden;
  padding: clamp(1.5rem, 5vw, 4.5rem);
}

.book-cover-link {
  justify-self: center;
  max-width: 340px;
}

.book-cover {
  box-shadow: 0 1.2rem 2.8rem rgb(0 0 0 / 18%);
  display: block;
  height: auto;
  width: 100%;
}

.publisher-logo {
  display: block;
  height: auto;
  margin-bottom: 2rem;
  max-width: 150px;
  width: 38%;
}

.featured-book h2,
.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin: 0 0 1.25rem;
}

.featured-book-copy > p:not(.eyebrow, .byline) {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 50ch;
}

.byline {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.home-offerings,
.latest-writing,
.book-topics {
  padding-top: clamp(5rem, 10vw, 9rem);
}

.section-heading {
  margin-bottom: 2.5rem;
  max-width: 780px;
}

.section-heading-row {
  align-items: end;
  display: flex;
  justify-content: space-between;
  max-width: none;
}

.offering-grid,
.home-post-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.offering-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  color: var(--text);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  text-decoration: none;
  transition: border-color 150ms ease, transform 150ms ease;
}

.offering-card:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-3px);
}

.offering-card h3 {
  font-size: 1.8rem;
  margin: 1.5rem 0 0.75rem;
}

.offering-card p,
.home-post-grid p {
  color: var(--muted);
}

.card-number,
.topic-grid span {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8rem;
  font-weight: 700;
}

.home-post-grid article {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
}

.home-post-grid time {
  color: var(--muted);
  font-size: 0.8rem;
}

.home-post-grid h3 {
  font-size: 1.4rem;
  margin: 0.45rem 0 0.6rem;
}

.home-post-grid h3 a {
  color: var(--text);
  text-decoration: none;
}

.book-hero {
  align-items: center;
  display: grid;
  gap: clamp(3rem, 8vw, 7rem);
  grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1fr);
}

.book-visual {
  max-width: 440px;
}

.book-details h1 {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
}

.book-details > p:not(.eyebrow, .book-subtitle, .book-authors) {
  color: var(--muted);
  max-width: 59ch;
}

.book-subtitle {
  font-size: 1.2rem;
  line-height: 1.4;
}

.book-authors {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.book-details .button {
  margin-top: 1rem;
}

.topic-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.topic-grid > div {
  border-top: 2px solid var(--accent);
  padding-top: 1.25rem;
}

.topic-grid h3 {
  margin: 0.8rem 0 0.5rem;
}

.topic-grid p {
  color: var(--muted);
  font-size: 0.9rem;
}

.collection-hero {
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
  max-width: 820px;
  padding-bottom: 1.75rem;
}

.collection-hero h1 {
  font-size: clamp(3rem, 7vw, 5rem);
  margin-bottom: 0.75rem;
}

.collection-hero .publisher-logo {
  margin-bottom: 1.25rem;
  max-width: 120px;
}

.collection-hero .hero-lede {
  margin-bottom: 0;
}

.course-list {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.course-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: clamp(1.5rem, 3vw, 2.25rem);
}

.course-copy h2,
.podcast-copy h2 {
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  margin: 0.4rem 0 1rem;
}

.course-copy > p:not(.card-kicker),
.podcast-copy > p:not(.card-kicker) {
  color: var(--muted);
  max-width: 65ch;
}

.card-kicker {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  margin: 0;
  text-transform: uppercase;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
}

.tag-list li {
  background: var(--accent-soft);
  border-radius: 999px;
  color: var(--accent-hover);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
}

.tag-list a {
  color: inherit;
  text-decoration: none;
}

.podcast-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.podcast-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
}

.podcast-card > a:first-child {
  display: block;
}

.podcast-art {
  aspect-ratio: 16 / 10;
  display: block;
  height: auto;
  object-fit: cover;
  object-position: center 38%;
  width: 100%;
}

.podcast-copy {
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.podcast-brand-panel {
  align-content: space-between;
  aspect-ratio: 16 / 10;
  background: #f5f1e8;
  color: #292728;
  display: grid;
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 760;
  letter-spacing: -0.04em;
  line-height: 1;
  padding: clamp(1.5rem, 4vw, 2.75rem);
}

.podcast-brand-panel .publisher-logo {
  margin: 0;
}

.youtube-badge {
  height: 46px;
  width: auto;
}

.youtube-badge-dark {
  display: none;
}

.badge-link {
  display: inline-block;
  margin-top: 1rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #111318;
    --surface: #181b22;
    --text: #eceef2;
    --muted: #a6abb4;
    --border: #30343d;
    --accent: #a5b4fc;
    --accent-hover: #c7d2fe;
    --accent-soft: #252844;
    --code-background: #181b22;
  }

  .button.primary {
    color: #111318;
  }

  .button.primary:hover {
    color: #111318;
  }

  .tag-list li {
    color: var(--accent);
  }

  .youtube-badge-light {
    display: none;
  }

  .youtube-badge-dark {
    display: block;
  }
}

@media (max-width: 800px) {
  .hero,
  .featured-book,
  .book-hero,
  .podcast-grid {
    grid-template-columns: 1fr;
  }

  .course-list {
    grid-template-columns: 1fr;
  }

  .post-layout {
    display: block;
  }

  .article-toc {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .headshot {
    max-width: 220px;
  }

  .book-cover-link,
  .book-visual {
    max-width: 300px;
  }

  .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  :root {
    font-size: 16px;
  }

  body {
    padding: 0 1rem;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2.75rem;
  }

  .hero h1 {
    font-size: 2.9rem;
  }

  .headshot {
    max-width: 170px;
  }

  .offering-grid,
  .home-post-grid,
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .section-heading-row {
    align-items: flex-start;
    flex-direction: column;
  }

}