/* Hallmark · macrostructure: Magazine · editorial · inherited HypeHobby theme
 * Audience: RC owners · use: find and read guides · motion: cut
 * Pre-emit critique: P4 H4 E4 S4 R5 V4 */
html:has(.page-learn), body.page-learn { overflow-x: clip; }
.learn-library { --learn-paper: var(--surface); --learn-ink: var(--ink); --learn-muted: var(--muted); --learn-rule: var(--line); --learn-accent: var(--accent); --learn-space: 24px; color: var(--learn-ink); }
.learn-masthead { display: grid; gap: 24px; padding: 32px 0 40px; border-bottom: 2px solid var(--learn-ink); }
.learn-masthead h1 { margin: 16px 0 0; font-size: clamp(32px, 4.5vw, 58px); letter-spacing: -.045em; line-height: 1.08; font-style: normal; overflow-wrap: anywhere; }
.learn-masthead h1 span { display: block; margin-top: 16px; font-size: 16px; line-height: 1.5; letter-spacing: 0; font-weight: 400; color: var(--learn-muted); }
.learn-masthead > p { margin: 0; max-width: 36ch; align-self: end; color: var(--learn-muted); }
.learn-layout { display: grid; gap: 40px; padding-top: 32px; }
.learn-index label { display: block; font-weight: 700; margin-bottom: 12px; }
.learn-index input { width: 100%; min-height: 48px; background: var(--learn-paper); }
.learn-index #guide-count { font-size: 13px; margin: 12px 0 24px; color: var(--learn-muted); }
.learn-index nav { display: grid; max-height: 42vh; overflow: auto; }
.learn-index nav a { display: flex; justify-content: space-between; gap: 16px; padding: 16px 4px; border-top: 1px solid var(--learn-rule); text-decoration: none; overflow-wrap: anywhere; font-size: 14px; }
.learn-index nav a span { flex-shrink: 0; color: var(--learn-accent); }
.learn-index nav a:hover, .learn-index nav a[aria-current] { color: var(--learn-accent); }
.learn-index-note { margin: 24px 0 0; font-size: 13px; color: var(--learn-muted); }
.learn-articles { min-width: 0; }
.learn-article { padding: 0 0 32px; margin: 0 0 48px; border-bottom: 1px solid var(--learn-rule); scroll-margin-top: 24px; }
.learn-article h2 { font-size: clamp(26px, 3vw, 38px); line-height: 1.18; letter-spacing: -.025em; max-width: 28ch; margin: 16px 0; overflow-wrap: anywhere; font-style: normal; }
.learn-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--learn-accent); font-weight: 600; }
.learn-author { font-size: 14px; margin: 0 0 32px; color: var(--learn-muted); }
.learn-image { margin: 0 0 32px; background: var(--learn-paper); }
.learn-image img { display: block; width: 100%; max-height: 460px; object-fit: contain; }
.learn-prose { max-width: 68ch; font-size: 17px; line-height: 1.85; }
.learn-prose a { color: var(--learn-accent); }
.learn-prose blockquote { border-left: 3px solid var(--learn-accent); padding-left: 20px; margin: 24px 0; }
.learn-prose h2, .learn-prose h3, .learn-prose h4 { margin-top: 32px; font-style: normal; }
.learn-article footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; margin-top: 40px; font-size: 13px; }
.learn-article footer span { color: var(--learn-muted); }
.learn-article footer a { white-space: nowrap; padding: 8px 0; }
.learn-empty { padding: 48px 0; max-width: 60ch; }
.learn-empty p { color: var(--learn-muted); }
.learn-library :is(a,button,input):focus-visible { outline: 2px solid var(--learn-accent); outline-offset: 4px; }
.learn-library [hidden] { display: none !important; }
@media(min-width: 960px) {
 .learn-masthead { grid-template-columns: minmax(0, 1fr) 300px; gap: 64px; }
 .learn-layout { grid-template-columns: 260px minmax(0, 1fr); gap: clamp(40px, 6vw, 96px); }
 .learn-index { position: sticky; top: 24px; align-self: start; }
 .learn-articles { max-width: 820px; padding: 24px 32px 0 0; }
}
.learn-articles { display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px 28px; max-width: none; padding: 0; align-items: start; }
.learn-article { margin: 0; background: var(--learn-paper); border-bottom: 2px solid var(--learn-rule); padding: 0; }
.learn-story { padding: 24px; min-width: 0; }
.learn-image { margin: 0; }
.learn-image img { aspect-ratio: 16 / 10; max-height: 360px; object-fit: contain; }
.learn-cover-type { aspect-ratio: 16 / 10; display: flex; flex-direction: column; justify-content: space-between; padding: 28px; background: var(--learn-ink); color: var(--learn-paper); }
.learn-cover-type > span { font-size: 12px; line-height: 1.5; }
.learn-cover-type { position: relative; overflow: hidden; isolation: isolate; color: #fff; }
.learn-cover-type .learn-cover-photo { position: absolute; inset: 0; width: 100%; height: 100%; max-height: none; object-fit: cover; z-index: -2; }
.learn-cover-type .learn-cover-dim { position: absolute; inset: 0; background: rgba(0,0,0,.64); z-index: -1; }
.learn-cover-type strong { font-size: clamp(22px, 2.4vw, 36px); line-height: 1.12; max-width: 20ch; overflow-wrap: anywhere; }
.learn-article h2 { font-size: 25px; }
.learn-author { margin-bottom: 16px; }
.learn-excerpt { color: var(--learn-muted); font-size: 15px; line-height: 1.7; }
.learn-reader > summary { display: flex; justify-content: space-between; padding: 16px 0 0; color: var(--learn-accent); font-weight: 700; cursor: pointer; list-style: none; }
.learn-reader > summary::-webkit-details-marker { display: none; }
.learn-close-label, .learn-reader[open] > summary .learn-read-label { display: none; }
.learn-reader[open] > summary .learn-close-label { display: inline; }
.learn-reader > .learn-prose { padding-top: 32px; }
.learn-reader > summary:focus-visible { outline: 2px solid var(--learn-accent); outline-offset: 4px; }
.learn-article:has(.learn-reader[open]), .learn-empty { grid-column: 1 / -1; }
@media(min-width: 700px) {
 .learn-articles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
 .learn-article:first-child { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); }
 .learn-article:first-child .learn-image img, .learn-article:first-child .learn-cover-type { height: 100%; min-height: 320px; aspect-ratio: auto; min-width: 0; }
 .learn-article:first-child:has(.learn-reader[open]) { display: block; }
}