/* Learn public pages — reading type, cards, callouts, comments.
   Source Serif 4 is self-hosted for articles; the app UI keeps Noto Sans. */
@font-face {
  font-family: "Source Serif 4";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("/static/fonts/source-serif/SourceSerif4-var.woff2") format("woff2");
}

@font-face {
  font-family: "Source Serif 4";
  font-style: italic;
  font-weight: 400 700;
  font-display: swap;
  src: url("/static/fonts/source-serif/SourceSerif4-italic-var.woff2") format("woff2");
}

html:has(body.learn-page),
html:has(body.learn-page) body.learn-page,
body.learn-page {
  min-height: 100dvh;
  --learn-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --learn-ink: var(--text);
  --learn-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.08);
}

.learn-page .learn-index {
  width: min(1080px, 100%);
}

.learn-page .learn-article-page {
  width: min(1064px, 100%);
}

.learn-page .pricing-topbar-actions,
.learn-page .learn-topbar-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.learn-page .learn-topbar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.learn-page .learn-topbar-btn-ghost {
  border: 1px solid var(--border2);
  background: var(--bg3);
  color: var(--text);
}

.learn-page .learn-topbar-btn-ghost:hover,
.learn-page .learn-topbar-btn-ghost:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.learn-page .learn-topbar-btn-theme {
  border: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}

.learn-page .learn-topbar-btn-theme:hover,
.learn-page .learn-topbar-btn-theme:focus-visible {
  background: var(--accent);
  color: var(--accent-fg);
}

.learn-page .learn-topbar-btn-primary {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
}

.learn-page .learn-topbar-btn-primary:hover,
.learn-page .learn-topbar-btn-primary:focus-visible {
  filter: brightness(1.05);
}

.learn-page button.learn-topbar-btn {
  font: inherit;
}

html[data-learn-user="1"] .learn-signin {
  display: none;
}

.learn-user {
  font-size: 13px;
  font-weight: 650;
  color: var(--text);
  padding: 8px 4px 8px 12px;
  max-width: 14rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.learn-lead,
.learn-meta,
.learn-empty {
  color: var(--text2);
}

.learn-lead {
  max-width: 1000px;
  font-size: 1.1rem;
  line-height: 1.6;
}

.learn-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.learn-skip {
  position: absolute;
  left: 8px;
  top: 8px;
  z-index: 5;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  text-decoration: none;
  transform: translateY(-150%);
}

.learn-skip:focus {
  transform: none;
}

/* Masthead and search */
.learn-masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 24px;
  margin: 8px 0 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.learn-masthead > div {
  flex: 1 1 18rem;
  min-width: 0;
}

.learn-masthead h1,
.learn-index h1 {
  margin: 0 0 6px;
  font-family: var(--learn-serif);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 650;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.learn-masthead .learn-lead {
  margin: 0;
}

.learn-eyebrow {
  margin: 0 0 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.learn-searchbar {
  display: flex;
  justify-content: flex-end;
  margin: 0 0 8px;
}

.learn-search {
  display: flex;
  align-items: center;
  flex: 0 1 340px;
  width: min(340px, 100%);
  border: 1px solid var(--border2);
  border-radius: 999px;
  background: var(--bg2);
  overflow: hidden;
}

.learn-search:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.learn-search input {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 44px;
  padding: 8px 4px 8px 18px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 16px;
}

.learn-search button {
  flex: none;
  width: 48px;
  min-height: 44px;
  border: 0;
  background: transparent;
  color: var(--text2);
  cursor: pointer;
}

.learn-search button:hover {
  color: var(--accent);
}

.learn-search-icon {
  display: block;
  width: 22px;
  height: 22px;
  margin: 0 auto;
  background: currentColor;
  -webkit-mask: var(--learn-icon-search) center / contain no-repeat;
  mask: var(--learn-icon-search) center / contain no-repeat;
}

body.learn-page {
  --learn-icon-search: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M15.5 14h-.79l-.28-.27A6.47 6.47 0 0016 9.5 6.5 6.5 0 109.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z'/%3E%3C/svg%3E");
  --learn-icon-info: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2a10 10 0 100 20 10 10 0 000-20zm1 15h-2v-6h2v6zm0-8h-2V7h2v2z'/%3E%3C/svg%3E");
  --learn-icon-fb: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M14 8h3V4h-3c-2.8 0-4.5 1.8-4.5 4.5V11H7v4h2.5v6h4v-6H16l.6-4h-3.1V9c0-.6.2-1 .5-1z'/%3E%3C/svg%3E");
  --learn-icon-x: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 4l16 16M20 4L4 20' fill='none' stroke='black' stroke-width='2.8' stroke-linecap='round'/%3E%3C/svg%3E");
  --learn-icon-in: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='5.5' cy='5.5' r='2.3'/%3E%3Cpath d='M3.5 9h4v11h-4zM10 9h3.8v1.6c.6-1.1 1.9-1.9 3.6-1.9 3 0 4.1 1.9 4.1 4.7V20h-4v-5.4c0-1.3-.4-2.1-1.5-2.1-1.2 0-2 .9-2 2.2V20h-4z'/%3E%3C/svg%3E");
  --learn-icon-wa: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 3a9 9 0 00-7.7 13.6L3 21l4.5-1.2A9 9 0 1012 3z' fill='none' stroke='black' stroke-width='2.2' stroke-linejoin='round'/%3E%3Cpath d='M9 8.5c-.4 1.6 1 4.6 3.2 5.8 1 .5 2 .6 2.7 0l.4-1-1.8-.9-.7.6c-.8-.4-1.6-1.2-2-2l.6-.7-.8-1.8z'/%3E%3C/svg%3E");
  --learn-icon-link: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M10 14a4 4 0 005.7 0l3-3a4 4 0 00-5.7-5.7l-1 1M14 10a4 4 0 00-5.7 0l-3 3a4 4 0 005.7 5.7l1-1' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round'/%3E%3C/svg%3E");
  --learn-icon-heart: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 20.5S3.5 15 3.5 9.2A4.7 4.7 0 0112 6.8a4.7 4.7 0 018.5 2.4c0 5.800-8.500 11.300-8.500 11.300z' fill='none' stroke='black' stroke-width='2.2' stroke-linejoin='round'/%3E%3C/svg%3E");
  --learn-icon-heart-fill: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 20.5S3.5 15 3.5 9.2A4.7 4.7 0 0112 6.8a4.7 4.7 0 018.5 2.4c0 5.800-8.500 11.300-8.500 11.300z' stroke='black' stroke-width='2' stroke-linejoin='round'/%3E%3C/svg%3E");
  --learn-icon-chat: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 5h16v11H9l-5 4z' fill='none' stroke='black' stroke-width='2.2' stroke-linejoin='round'/%3E%3C/svg%3E");
  --learn-icon-warn: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M1 21h22L12 2 1 21zm12-3h-2v-2h2v2zm0-4h-2v-4h2v4z'/%3E%3C/svg%3E");
}

/* Category chips */
.learn-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 18px;
}

.learn-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 4px 14px;
  border: 1px solid var(--border2);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  background: var(--bg2);
  font-size: 0.9rem;
  transition: border-color 0.15s, color 0.15s;
}

.learn-nav a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.learn-nav a.is-on {
  border-color: var(--accent);
  color: var(--accent);
}

/* Section headings on index pages */
.learn-index h2 {
  margin: 28px 0 4px;
  font-family: var(--learn-serif);
  font-size: 1.6rem;
  font-weight: 650;
}

/* Cards */
.learn-cards,
.learn-related-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.learn-cards-featured {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

@media (min-width: 900px) {
  .learn-cards-featured {
    grid-template-columns: repeat(4, 1fr);
  }

  .learn-cards-featured .learn-entry:first-child {
    grid-column: span 2;
    grid-row: span 1;
  }

  .learn-cards-featured .learn-entry:first-child .learn-entry-media img,
  .learn-cards-featured .learn-entry:first-child .learn-entry-blank {
    aspect-ratio: 16 / 10;
  }

  .learn-cards-featured .learn-entry:first-child b {
    font-size: 1.45rem;
  }
}

.learn-entry {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 14px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.learn-entry:hover,
.learn-entry:focus-visible {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--learn-shadow);
}

.learn-entry-media {
  position: relative;
  display: block;
}

.learn-entry-media img,
.learn-entry-blank {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: linear-gradient(135deg, var(--bg3), color-mix(in srgb, var(--accent) 22%, var(--bg3)));
}

.learn-entry-cat {
  position: absolute;
  left: 12px;
  top: 12px;
  max-width: calc(100% - 24px);
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  color: var(--text);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.learn-entry-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  padding: 14px 16px 16px;
}

.learn-entry small {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--text3);
  font-size: 0.78rem;
}

.learn-entry b {
  font-family: var(--learn-serif);
  font-size: 1.2rem;
  font-weight: 650;
  line-height: 1.3;
}

.learn-entry em {
  color: var(--text2);
  font-style: normal;
  font-size: 0.92rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.learn-entry-foot {
  display: flex;
  justify-content: flex-start;
  margin-top: auto;
  padding-top: 6px;
  font-size: 0.9rem;
}

.learn-more {
  color: var(--accent);
  font-weight: 650;
}

.learn-more::after {
  content: " →";
}

/* Article */
.learn-article {
  width: min(1000px, 100%);
  max-width: 1000px;
  min-width: 0;
  margin: 0 auto;
}

.learn-titlebar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.learn-titlebar h1 {
  flex: 1 1 12rem;
}

.learn-edit {
  flex: none;
  min-height: 44px;
  margin-top: 0.35rem;
}

.learn-edit[hidden] {
  display: none;
}

.learn-article h1 {
  margin: 0 0 0.5rem;
  font-family: var(--learn-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.learn-article .learn-meta {
  margin: 0 0 1rem;
  font-size: 0.9rem;
}

.learn-article > .learn-lead {
  font-family: var(--learn-serif);
  font-size: 1.3rem;
  line-height: 1.55;
  color: var(--text2);
}

.learn-body {
  overflow-x: auto;
  font-family: var(--learn-serif);
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--learn-ink);
}

.learn-body p {
  margin: 0 0 1.15rem;
}

.learn-body a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.learn-body h2,
.learn-body h3 {
  font-family: var(--learn-serif);
  font-weight: 650;
  letter-spacing: -0.005em;
  text-transform: none;
  color: var(--text);
  line-height: 1.25;
}

.learn-body h2 {
  margin: 2.2rem 0 0.7rem;
  padding-top: 0.4rem;
  font-size: 1.85rem;
  border-top: 1px solid var(--border);
}

.learn-body h2:first-child {
  border-top: 0;
  padding-top: 0;
  margin-top: 0.4rem;
}

.learn-body h3 {
  margin: 1.8rem 0 0.5rem;
  font-size: 1.4rem;
}

.learn-body ul,
.learn-body ol {
  margin: 0 0 1.15rem;
  padding-left: 1.5rem;
}

.learn-body li {
  margin-bottom: 0.35rem;
}

.learn-body code {
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: var(--bg3);
  font-family: var(--font-mono);
  font-size: 0.88em;
}

/* Quote: big editorial pull quote, no box */
.learn-body blockquote {
  position: relative;
  margin: 1.8rem 0 1.8rem;
  padding: 0.2rem 0 0.2rem 3.2rem;
  border: 0;
  color: var(--text);
  font-size: 1.45rem;
  font-style: italic;
  line-height: 1.5;
  background: transparent;
}

.learn-body blockquote::before {
  content: "\201C";
  position: absolute;
  left: 0;
  top: -0.35rem;
  color: var(--accent);
  font-size: 4.2rem;
  font-style: normal;
  line-height: 1;
}

.learn-body blockquote p:last-child {
  margin-bottom: 0;
}

/* Note and warning: tinted boxes with their own icon and colour */
.learn-body aside {
  position: relative;
  margin: 1.5rem 0;
  padding: 1rem 1.1rem 1rem 3.1rem;
  border: 1px solid color-mix(in srgb, var(--blue) 35%, var(--border2));
  border-left-width: 5px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--blue) 9%, var(--bg2));
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
}

.learn-body aside::before {
  content: "Note";
  display: block;
  margin-bottom: 4px;
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
}

.learn-body aside::after {
  content: "";
  position: absolute;
  left: 0.95rem;
  top: 1rem;
  width: 1.4rem;
  height: 1.4rem;
  background: var(--blue);
  -webkit-mask: var(--learn-icon-info) center / contain no-repeat;
  mask: var(--learn-icon-info) center / contain no-repeat;
}

.learn-body aside[data-tone="warning"] {
  border-color: color-mix(in srgb, var(--orange, #9a4a12) 55%, var(--border2));
  background: color-mix(in srgb, var(--orange, #9a4a12) 14%, var(--bg2));
}

.learn-body aside[data-tone="warning"]::before {
  content: "Warning";
  color: var(--orange, #9a4a12);
}

.learn-body aside[data-tone="warning"]::after {
  background: var(--orange, #9a4a12);
  -webkit-mask-image: var(--learn-icon-warn);
  mask-image: var(--learn-icon-warn);
}

.learn-body aside p:last-child {
  margin-bottom: 0;
}

.learn-body p[data-related-id] {
  margin: 1rem 0;
  padding: 10px 14px;
  border: 1px solid var(--border2);
  border-radius: 10px;
  background: var(--bg2);
  font-family: var(--font-body);
  font-size: 1rem;
}

.learn-body p[data-related-id]::before {
  content: "Related";
  display: block;
  margin-bottom: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text3);
}

.learn-body p[data-related-id] a {
  color: var(--accent);
  font-weight: 650;
}

.learn-crumbs {
  margin-bottom: 12px;
  color: var(--text3);
  font-size: 0.9rem;
}

.learn-crumbs a {
  color: var(--accent);
}

.learn-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin: 0 0 14px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 0.85rem;
  text-decoration: none;
}

.learn-article-tags {
  margin-top: 1.5rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}

.learn-article-tags .learn-nav {
  margin: 0;
}

.learn-hero-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin: 0 0 1.4rem;
  aspect-ratio: 16 / 10;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg3), color-mix(in srgb, var(--accent) 18%, var(--bg3)));
  border: 1px solid var(--border2);
}

.learn-hero {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center center;
}

/* Share: quiet outlined buttons */
.learn-share {
  margin-top: 2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}

.learn-share h2 {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
}

.learn-share div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.learn-share a,
.learn-share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 6px 16px;
  border: 1px solid var(--border2);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  text-decoration: none;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.learn-share a:hover,
.learn-share-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

/* Brand colours and small icons (icons are CSS masks, no inline SVG) */
.learn-share-btn::before,
.learn-btn[data-learn-like]::before,
.learn-btn[data-learn-jump]::before {
  content: "";
  display: inline-block;
  flex: none;
  width: 1.15em;
  height: 1.15em;
  margin-right: 8px;
  background: currentColor;
  -webkit-mask: var(--learn-ico) center / contain no-repeat;
  mask: var(--learn-ico) center / contain no-repeat;
}

.learn-btn[data-learn-like],
.learn-btn[data-learn-jump] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.learn-share .learn-share-fb { --learn-ico: var(--learn-icon-fb); }
.learn-share .learn-share-tw { --learn-ico: var(--learn-icon-x); }
.learn-share .learn-share-in { --learn-ico: var(--learn-icon-in); }
.learn-share .learn-share-wa { --learn-ico: var(--learn-icon-wa); }
.learn-share .learn-share-copy { --learn-ico: var(--learn-icon-link); }
.learn-btn[data-learn-like] { --learn-ico: var(--learn-icon-heart); }
.learn-btn[data-learn-jump] { --learn-ico: var(--learn-icon-chat); }

.learn-share .learn-share-fb,
.learn-share .learn-share-tw,
.learn-share .learn-share-in,
.learn-share .learn-share-wa {
  border-color: transparent;
  color: #fff;
}

.learn-share .learn-share-fb { background: #1877f2; }
.learn-share .learn-share-tw { background: #0f1419; border-color: color-mix(in srgb, #fff 28%, transparent); }
.learn-share .learn-share-in { background: #0a66c2; }
.learn-share .learn-share-wa { background: #158a45; }

.learn-share .learn-share-fb:hover,
.learn-share .learn-share-tw:hover,
.learn-share .learn-share-in:hover,
.learn-share .learn-share-wa:hover {
  color: #fff;
  filter: brightness(1.12);
  transform: translateY(-1px);
}

.learn-share .learn-share-fb:hover { background: #1877f2; }
.learn-share .learn-share-tw:hover { background: #0f1419; }
.learn-share .learn-share-in:hover { background: #0a66c2; }
.learn-share .learn-share-wa:hover { background: #158a45; }

.learn-btn[data-learn-like]:hover {
  border-color: #e11d48;
  color: #e11d48;
  background: color-mix(in srgb, #e11d48 8%, var(--bg));
}

.learn-btn[data-learn-like][aria-pressed="true"] {
  border-color: #e11d48;
  color: #e11d48;
  background: color-mix(in srgb, #e11d48 12%, var(--bg));
  --learn-ico: var(--learn-icon-heart-fill);
}

/* Likes and comments */
.learn-react {
  margin-top: 1.6rem;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg2);
}

.learn-react-counts {
  margin: 0 0 10px;
  color: var(--text2);
  font-size: 0.92rem;
}

.learn-react-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.learn-btn {
  min-height: 44px;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border2);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.learn-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.learn-btn[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
}

.learn-btn-post {
  background: var(--accent);
  color: var(--accent-fg, #fff);
  border-color: transparent;
}

.learn-btn-post:hover {
  color: var(--accent-fg, #fff);
  filter: brightness(1.08);
}

.learn-comments {
  margin-top: 2rem;
}

.learn-comments h2 {
  margin: 0 0 14px;
  font-family: var(--learn-serif);
  font-size: 1.6rem;
  font-weight: 650;
}

.learn-comments h3 {
  margin: 1.8rem 0 6px;
  font-family: var(--learn-serif);
  font-size: 1.3rem;
  font-weight: 650;
}

.learn-comment-note,
.learn-comment-msg {
  color: var(--text2);
  margin: 0 0 10px;
  font-size: 0.92rem;
}

.learn-comment-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.learn-comment {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.learn-avatar {
  flex: none;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 18%, var(--bg2));
  color: var(--accent);
  font-family: var(--learn-serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.learn-comment-card {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 4px 14px 14px 14px;
  background: var(--bg2);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.learn-comment-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 12px;
  margin: 0 0 4px;
}

.learn-comment-head time {
  color: var(--text3);
  font-size: 0.8rem;
}

.learn-comment-text {
  margin: 0;
  overflow-wrap: anywhere;
  line-height: 1.6;
}

.learn-comment-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg2);
}

.learn-comment-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
  font-weight: 600;
}

.learn-field-wide {
  grid-column: 1 / -1;
}

.learn-comment-form input,
.learn-comment-form textarea {
  font: inherit;
  font-size: 16px;
  font-weight: 400;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--border2);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
}

.learn-comment-form input:focus,
.learn-comment-form textarea:focus {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.learn-comment-form textarea {
  min-height: 8rem;
  resize: vertical;
}

.learn-captcha:empty {
  display: none;
}

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

@media (max-width: 640px) {
  .learn-comment-form {
    grid-template-columns: 1fr;
    padding: 14px;
  }

  .learn-body {
    font-size: 1.1rem;
  }

  .learn-body blockquote {
    font-size: 1.25rem;
    padding-left: 2.6rem;
  }

  .learn-search {
    flex-basis: 100%;
    width: 100%;
  }

  .learn-searchbar {
    justify-content: stretch;
  }
}

/* Related */
.learn-related {
  margin-top: 36px;
}

.learn-related h2 {
  margin: 0;
  font-family: var(--learn-serif);
  font-size: 1.8rem;
}

@media (max-width: 700px) {
  .learn-related-row {
    display: flex;
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .learn-related-row .learn-entry {
    flex: 0 0 min(260px, 78vw);
  }
}

.learn-body img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.learn-body img[data-size="small"] {
  max-width: min(100%, 240px);
}

.learn-body img[data-size="medium"] {
  max-width: min(100%, 480px);
}

.learn-body img[data-size="large"] {
  max-width: min(100%, 720px);
}

.learn-body [data-youtube-video] {
  position: relative;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
}

.learn-body [data-youtube-video] iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 10px;
}

.learn-body table {
  min-width: 28rem;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.learn-pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 24px 0 8px;
}

.learn-pager a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--accent);
  font-weight: 650;
}

@media (prefers-reduced-motion: reduce) {
  .learn-entry,
  .learn-btn,
  .learn-share-btn {
    transition: none;
  }

  .learn-entry:hover,
  .learn-entry:focus-visible {
    transform: none;
  }
}