:root {
  color-scheme: light;
  --color-ink: #1d1d1f;
  --color-graphite: #707070;
  --color-slate: #474747;
  --color-ash: #333333;
  --color-fog: #f5f5f7;
  --color-snow: #ffffff;
  --color-silver-mist: #e8e8ed;
  --color-azure: #0071e3;
  --color-cobalt-link: #0066cc;
  --max-width: 1200px;
  --article-width: 760px;
  --radius-card: 28px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--color-fog);
  color: var(--color-ink);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Segoe UI",
    system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.47;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--color-fog);
}

a {
  color: var(--color-cobalt-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header,
.page-shell,
.site-footer {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  gap: 24px;
  padding: 0;
  border-bottom: 1px solid var(--color-silver-mist);
  background: color-mix(in srgb, var(--color-fog) 88%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
}

.brand {
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 24px;
  font-size: 12px;
  font-weight: 400;
}

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

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--color-cobalt-link);
}

.intro {
  min-height: calc(100vh - 44px);
  padding: 86px 0 64px;
  text-align: center;
}

.page-title {
  padding: 92px 0 32px;
  text-align: center;
}

.eyebrow,
.post-date,
.post-preview time {
  display: block;
  margin: 0 0 12px;
  color: var(--color-ink);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.24;
}

.post-date,
.post-preview time {
  color: var(--color-slate);
  font-size: 12px;
  line-height: 1.33;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI",
    system-ui, sans-serif;
  color: var(--color-ink);
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  max-width: 11ch;
  margin: 0 auto 18px;
  font-size: 96px;
  line-height: 1.04;
}

h2 {
  margin-bottom: 0;
  font-size: 40px;
  line-height: 1.17;
}

h3 {
  margin-bottom: 10px;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.2;
}

.lede {
  max-width: 680px;
  margin: 0 auto 24px;
  color: var(--color-graphite);
  font-size: 24px;
  font-weight: 300;
  line-height: 1.33;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  margin-top: 4px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--color-azure);
  color: var(--color-snow);
  font-size: 17px;
  line-height: 1.24;
}

.primary-action:hover {
  background: #0077ed;
  text-decoration: none;
}

.hero-media {
  overflow: hidden;
  margin: 56px auto 0;
  border-radius: var(--radius-card);
  background: var(--color-snow);
}

.hero-media img {
  display: block;
  width: 100%;
  height: auto;
}

.section {
  margin: 0 0 80px;
  padding: 40px;
  border-radius: var(--radius-card);
  background: var(--color-snow);
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 28px;
}

.text-link {
  flex: 0 0 auto;
  margin-top: 12px;
  color: var(--color-cobalt-link);
  font-size: 17px;
}

.post-list {
  display: grid;
  gap: 18px;
}

.post-preview {
  display: grid;
  gap: 8px;
  padding: 28px;
  border-radius: var(--radius-card);
  background: var(--color-fog);
}

.post-preview h3 a {
  color: var(--color-ink);
}

.post-preview h3 a:hover {
  color: var(--color-cobalt-link);
  text-decoration: none;
}

.post-preview p,
.empty-state {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--color-graphite);
}

.prose {
  max-width: var(--article-width);
  margin: 64px auto 96px;
  padding: 56px;
  border-radius: var(--radius-card);
  background: var(--color-snow);
}

.prose h1 {
  max-width: 10ch;
  margin: 0 0 28px;
  font-size: 72px;
  line-height: 1.04;
}

.prose h2 {
  margin: 56px 0 16px;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
}

.prose p {
  margin-bottom: 24px;
  color: var(--color-ink);
  font-size: 20px;
  line-height: 1.45;
}

.prose ul {
  margin: 0 0 30px;
  padding-left: 1.25rem;
  color: var(--color-ink);
  font-size: 20px;
  line-height: 1.45;
}

.prose li {
  margin-bottom: 12px;
}

.link-list {
  color: var(--color-cobalt-link);
  font-size: 17px;
}

.comments {
  margin-top: 64px;
  padding-top: 44px;
  border-top: 1px solid var(--color-silver-mist);
}

.comments h2 {
  margin-top: 0;
}

.comments-status,
.comments-empty {
  margin: 12px 0 28px;
  color: var(--color-graphite);
  font-size: 17px;
}

.comments-list {
  display: grid;
  gap: 0;
  margin-bottom: 36px;
}

.comment {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-silver-mist);
}

.comment:first-child {
  border-top: 1px solid var(--color-silver-mist);
}

.comment header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 8px;
}

.comment strong {
  color: var(--color-ink);
  font-size: 17px;
  font-weight: 600;
}

.comment time {
  flex: 0 0 auto;
  color: var(--color-graphite);
  font-size: 12px;
  text-transform: uppercase;
}

.comment p {
  margin: 0;
  color: var(--color-ink);
  font-size: 17px;
  line-height: 1.47;
}

.comment-form {
  display: grid;
  gap: 18px;
}

.comment-field {
  display: grid;
  gap: 8px;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 600;
}

.comment-field input,
.comment-field textarea {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 16px;
  background: var(--color-fog);
  color: var(--color-ink);
  font: inherit;
  font-size: 17px;
  font-weight: 400;
}

.comment-field input {
  min-height: 48px;
  padding: 0 16px;
}

.comment-field textarea {
  min-height: 136px;
  padding: 14px 16px;
  resize: vertical;
}

.comment-field input:focus,
.comment-field textarea:focus {
  border-color: var(--color-azure);
  outline: none;
}

.comment-honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.comment-actions {
  display: flex;
  justify-content: flex-start;
}

.comment-actions button {
  min-height: 40px;
  border: 0;
  border-radius: 999px;
  background: var(--color-azure);
  color: var(--color-snow);
  cursor: pointer;
  font: inherit;
  font-size: 17px;
  line-height: 1.24;
  padding: 8px 18px;
}

.comment-actions button:hover {
  background: #0077ed;
}

.comment-actions button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 26px 0 36px;
  border-top: 1px solid var(--color-silver-mist);
  color: var(--color-graphite);
  font-size: 12px;
}

@media (max-width: 900px) {
  h1 {
    font-size: 72px;
  }

  .intro {
    padding-top: 72px;
  }

  .section {
    padding: 28px;
  }

  .prose h1 {
    font-size: 56px;
  }
}

@media (max-width: 560px) {
  .site-header,
  .page-shell,
  .site-footer {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 14px 0;
  }

  .nav {
    justify-content: flex-start;
    gap: 18px;
  }

  .intro {
    min-height: auto;
    padding: 56px 0 48px;
    text-align: left;
  }

  .page-title {
    padding: 56px 0 28px;
    text-align: left;
  }

  .eyebrow {
    font-size: 18px;
  }

  h1 {
    max-width: none;
    margin-left: 0;
    font-size: 48px;
  }

  h2 {
    font-size: 32px;
  }

  h3 {
    font-size: 24px;
  }

  .lede {
    margin-left: 0;
    font-size: 20px;
  }

  .hero-media {
    margin-top: 40px;
  }

  .section {
    margin-bottom: 56px;
    padding: 24px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .text-link {
    margin-top: 0;
  }

  .post-preview {
    padding: 24px;
  }

  .prose {
    margin: 36px auto 72px;
    padding: 28px;
  }

  .prose h1 {
    font-size: 42px;
  }

  .prose h2 {
    margin-top: 44px;
    font-size: 24px;
  }

  .prose p,
  .prose ul {
    font-size: 18px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}