/* Course details use the shared site palette, header, footer and controls. */
body.course-detail {
  padding-bottom: var(--mobile-navigation-height, 0px);
  background: var(--paper-light, #faf8f3);
}

.course-detail main { overflow-wrap: anywhere; }
.course-detail [hidden],
.detail-dialog:not([open]) { display: none !important; }
.detail-hero { padding: 24px 0 52px; background: var(--paper); border-bottom: 1px solid var(--line); }
.detail-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 12px; margin-bottom: 25px; color: var(--muted); font-size: .74rem; }
.detail-breadcrumb a { display: inline-flex; align-items: center; min-height: 44px; }
.detail-breadcrumb a:hover { color: var(--brand); }
.detail-breadcrumb [aria-current="page"] { color: var(--ink); }
.detail-breadcrumb > span[aria-hidden] { color: #b7ac9e; }
.detail-hero__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 380px); align-items: center; gap: clamp(40px, 7vw, 100px); }
.detail-hero__grid > * { min-width: 0; }
.detail-hero__copy { padding-block: 16px; }
.detail-hero__copy .section-kicker { margin-bottom: 15px; }
.detail-hero__copy h1 { max-width: 850px; margin: 0 0 12px; font-size: clamp(2.1rem, 4vw, 3.9rem); line-height: 1.55; font-weight: 800; letter-spacing: -.04em; }
.detail-latin { margin: 0 0 24px; color: var(--brand); font-family: Arial, sans-serif; font-size: clamp(.86rem, 1.3vw, 1.06rem); line-height: 1.7; letter-spacing: .035em; text-align: right; }
.detail-latin:empty { display: none; }
.detail-intro { max-width: 670px; margin: 0 0 27px; color: var(--muted); font-size: .98rem; line-height: 2.15; }
.detail-metrics { display: flex; flex-wrap: wrap; gap: 18px 0; margin: 0 0 29px; }
.detail-metrics:empty { display: none; }
.detail-metrics > div { min-width: 0; max-width: 100%; padding-inline: 25px; border-inline-start: 1px solid #dcd3c7; }
.detail-metrics > div:first-child { padding-inline-start: 0; border-inline-start: 0; }
.detail-metrics dt { margin-bottom: 5px; color: var(--muted); font-size: .73rem; }
.detail-metrics dt { display: flex; align-items: center; gap: 6px; }
.detail-metrics dt svg { width: 15px; height: 15px; flex: none; }
.detail-metrics dd { margin: 0; color: var(--ink); font-size: 1.1rem; line-height: 1.8; font-weight: 700; }
.detail-hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 20px; }
.detail-hero__actions .button { min-height: 52px; max-width: 100%; }
.detail-sample-note { margin: 19px 0 0; color: #797165; font-size: .69rem; line-height: 1.95; }

/* Intrinsic dimensions keep every part of the original poster visible. */
.detail-poster { width: 100%; margin: 0; }
.detail-poster img { display: block; width: 100%; max-width: 100%; height: auto; border: 1px solid rgba(21, 25, 22, .1); border-radius: 19px; box-shadow: 0 20px 45px rgba(30, 21, 14, .11); }
.detail-poster figcaption { margin-top: 14px; color: var(--muted); font-size: .68rem; line-height: 1.8; text-align: center; }
.detail-poster figcaption:empty { display: none; }
.detail-poster-fallback { display: grid; place-items: center; min-height: 240px; padding: 30px; border: 1px solid var(--line); border-radius: 20px; color: var(--muted); background: var(--surface-warm); font-size: 1.15rem; font-weight: 600; text-align: center; }

.detail-nav-wrap { position: sticky; z-index: 35; top: var(--header-height, 86px); border-bottom: 1px solid #e1d9ce; background: rgba(250, 248, 243, .97); backdrop-filter: blur(12px); }
.detail-section-nav { display: flex; align-items: stretch; gap: 8px 25px; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: thin; scrollbar-color: #d8d0c5 transparent; }
.detail-section-nav a { position: relative; display: inline-flex; align-items: center; justify-content: center; flex: none; min-height: 70px; padding: 13px 5px; border-bottom: 3px solid transparent; color: var(--muted); font-size: .8rem; font-weight: 600; white-space: nowrap; }
.detail-section-nav a:hover { color: var(--brand); }
.detail-section-nav a:is(.is-active, [aria-current="true"], [aria-current="location"]) { border-bottom-color: var(--brand); color: var(--brand); font-weight: 800; }
.detail-section-nav a:focus-visible { outline-offset: -5px; border-radius: 6px; }
.detail-section-nav svg { width: 18px; height: 18px; flex: none; margin-inline-end: 8px; }

.detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; align-items: start; gap: 38px; padding-block: 42px 95px; }
.detail-layout > * { min-width: 0; }
.detail-sections { display: grid; gap: 24px; }
.detail-section { min-width: 0; padding: 31px 34px 33px; border: 1px solid #e5ddd2; border-radius: 22px; background: #fff; }
.detail-section,
.detail-enrollment { scroll-margin-top: 86px; }
.detail-section__heading { display: flex; align-items: center; gap: 15px; margin-bottom: 23px; }
.detail-section__heading > span { display: grid; place-items: center; width: 46px; height: 46px; flex: none; border: 1px solid #eaded3; border-radius: 14px; color: var(--brand); background: #f8f2eb; }
.detail-section__heading > span svg { width: 23px; height: 23px; }
.detail-section__heading > div { min-width: 0; }
.detail-section__heading .section-kicker { margin: 0 0 4px; font-size: .65rem; }
.detail-section__heading h2 { margin: 0; font-size: clamp(1.18rem, 1.8vw, 1.5rem); line-height: 1.7; font-weight: 800; }
.detail-rich-text { color: #545951; font-size: .91rem; line-height: 2.2; }
.detail-sources { white-space: pre-line; }
.detail-rich-text > :last-child { margin-bottom: 0; }
.detail-rich-text p { margin-bottom: 17px; }
.detail-rich-text h3 { margin: 27px 0 12px; color: var(--ink); font-size: 1rem; line-height: 1.9; font-weight: 700; }
.detail-rich-text h4 { margin: 22px 0 10px; color: var(--ink); font-size: .94rem; line-height: 1.9; }
.detail-rich-text strong { color: var(--ink); font-weight: 700; }
.detail-rich-text ul,
.detail-rich-text ol { margin-block: 12px 21px; padding-inline-start: 23px; }
.detail-rich-text li { padding-inline-start: 5px; margin-bottom: 9px; }
.detail-rich-text li::marker { color: var(--brand); }
.detail-rich-text li > ul,
.detail-rich-text li > ol { margin-block: 5px 8px; }
.detail-rich-text a { color: var(--brand); text-decoration: underline; text-underline-offset: 4px; }
.detail-rich-text img { display: block; max-width: 100%; height: auto; margin-block: 20px; border-radius: 12px; }
.detail-rich-text blockquote { margin: 24px 0; padding: 17px 21px; border-inline-start: 3px solid var(--brand); border-radius: 10px 0 0 10px; background: var(--paper-light); }
.detail-rich-text blockquote > :last-child { margin-bottom: 0; }
.detail-table-scroll { max-width: 100%; margin-block: 20px; overflow-x: auto; overscroll-behavior-x: contain; border: 1px solid #e5ddd2; border-radius: 13px; scrollbar-width: thin; }
.detail-rich-text table { width: 100%; min-width: 430px; margin: 0; border-collapse: collapse; font-size: .79rem; text-align: start; }
.detail-rich-text th,
.detail-rich-text td { min-width: 88px; padding: 13px 16px; border-bottom: 1px solid #e9e3db; vertical-align: top; text-align: start; }
.detail-rich-text th { color: var(--ink); background: #f5f1e9; font-weight: 700; }
.detail-rich-text tbody tr:last-child td { border-bottom: 0; }
.detail-rich-text tbody tr:nth-child(even) { background: #fcfaf6; }
.detail-empty { padding: 18px 20px; border: 1px dashed #d9d0c3; border-radius: 13px; color: var(--muted); background: var(--paper-light); font-size: .87rem; line-height: 2; }

.detail-enrollment { position: sticky; top: calc(var(--header-height, 86px) + 90px); max-height: calc(100dvh - var(--header-height, 86px) - 108px); overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: #d3c7b8 transparent; padding: 26px 23px 22px; border: 1px solid #d8c7b8; border-top: 3px solid var(--brand); border-radius: 20px; background: #fff; box-shadow: 0 13px 38px rgba(43, 30, 17, .05); }
.detail-enrollment > .section-kicker { margin-bottom: 8px; font-size: .66rem; }
.detail-enrollment h2 { margin: 0 0 9px; font-size: 1.2rem; line-height: 1.85; font-weight: 800; }
.detail-enrollment__intro { margin-bottom: 19px; color: var(--muted); font-size: .75rem; line-height: 2; }
.detail-enrollment fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.detail-class-selection-label { display: block; max-width: 100%; margin: 0 0 10px; padding: 0; color: var(--muted); font-size: .71rem; line-height: 1.9; }
#class-options { display: grid; gap: 10px; }
.detail-class-option { position: relative; display: grid; grid-template-columns: 17px minmax(0, 1fr); align-items: start; gap: 4px 10px; min-height: 64px; padding: 13px 12px; border: 1px solid #ddd7ce; border-radius: 12px; background: #fff; transition: border-color 160ms ease, background 160ms ease; }
.detail-class-option:hover { border-color: #b79787; background: #fcfaf7; }
.detail-class-option:has(input:checked) { border-color: var(--brand); background: #fcf3ef; }
.detail-class-option:has(input:focus-visible) { outline: 3px solid rgba(150, 0, 4, .25); outline-offset: 3px; }
.detail-class-option input { width: 17px; height: 17px; margin: 13px 0 0; accent-color: var(--brand); cursor: pointer; }
.detail-class-option__body { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 7px; min-width: 0; min-height: 44px; cursor: pointer; }
.detail-class-option__body strong { display: inline-flex; flex: 1 1 100px; align-items: center; gap: 7px; min-width: 0; color: var(--ink); font-size: .79rem; line-height: 1.9; font-weight: 700; }
.detail-class-option__body strong svg { width: 17px; height: 17px; flex: none; color: #8e7966; }
.detail-class-option > .detail-teachers,
.detail-class-option > .detail-teachers-empty { grid-column: 2; }
.detail-class-option__schedule { display: flex; grid-column: 2; align-items: flex-start; gap: 8px; min-width: 0; margin: 7px 0 0; padding-top: 10px; border-top: 1px solid rgba(21, 25, 22, .09); color: var(--muted); font-size: .71rem; line-height: 2; }
.detail-class-option__schedule > svg { width: 15px; height: 15px; flex: none; margin-top: 4px; color: #8e7966; }
.detail-class-option__schedule > span { min-width: 0; }
.detail-class-option.is-single { grid-template-columns: minmax(0, 1fr); gap: 5px; padding: 3px 0 0; border: 0; border-radius: 0; background: transparent; }
.detail-class-option.is-single:hover { background: transparent; }
.detail-class-option.is-single > .detail-class-option__body { min-height: 38px; cursor: default; }
.detail-class-option.is-single > .detail-teachers,
.detail-class-option.is-single > .detail-teachers-empty,
.detail-class-option.is-single > .detail-class-option__schedule { grid-column: 1; }
.detail-class-option.is-single .detail-class-option__schedule { padding-top: 12px; }
.detail-class-option__status { display: inline-flex; align-items: center; gap: 5px; width: fit-content; max-width: 100%; padding: 3px 7px; border-radius: 5px; color: #426147; background: #eaf2e8; font-size: .62rem; line-height: 1.65; font-weight: 600; }
.detail-class-option__status.is-full { color: #796b5d; background: #eee9e1; }
.detail-class-option__status.is-soon { color: #7c5d28; background: #f6eedc; }
.detail-class-option:has(input:disabled) { border-color: #e4e0d9; background: #f6f4f0; cursor: default; }
.detail-class-option input:disabled { cursor: default; }
.detail-class-option:has(input:disabled) strong { color: #777267; }
.detail-class-option:has(input:disabled) .detail-class-option__status { color: #796b5d; background: #eee9e1; }
.detail-class-facts { margin: 23px 0; border-top: 1px solid var(--line); }
.detail-class-facts > div { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); align-items: baseline; gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.detail-class-facts dt { color: var(--muted); font-size: .71rem; line-height: 1.95; }
.detail-class-facts dt { display: flex; align-items: center; gap: 6px; }
.detail-class-facts dt svg { width: 15px; height: 15px; flex: none; color: #928779; }
.detail-class-facts dd { margin: 0; color: var(--ink); font-size: .76rem; line-height: 1.95; font-weight: 600; text-align: end; }
.detail-class-facts dd > span { display: block; }
.detail-class-facts > .detail-teacher-fact { grid-template-columns: minmax(0, 1fr); gap: 6px; }
.detail-class-facts > .detail-teacher-fact dd { min-width: 0; text-align: start; }
.detail-teachers { display: grid; gap: 4px; min-width: 0; margin: 0; padding: 0; list-style: none; }
.detail-teachers > li { min-width: 0; }
.detail-teacher { display: flex; align-items: center; gap: 9px; min-width: 0; min-height: 44px; max-width: 100%; padding: 2px 0; border-radius: 8px; color: var(--ink); font-size: .75rem; line-height: 1.9; font-weight: 600; text-align: start; }
a.detail-teacher { width: fit-content; }
a.detail-teacher .detail-teacher__name { text-decoration: underline; text-decoration-color: #c9b2a6; text-underline-offset: 4px; }
a.detail-teacher:hover { color: var(--brand); }
a.detail-teacher:hover .detail-teacher__name { text-decoration-color: currentColor; }
a.detail-teacher:focus-visible { outline: 3px solid rgba(150, 0, 4, .3); outline-offset: 3px; }
.detail-teacher__avatar { display: grid; place-items: center; flex: 0 0 36px; width: 36px; height: 36px; overflow: hidden; border: 1px solid #ded3c7; border-radius: 50%; color: #897767; background: #f3ede4; }
.detail-teacher__avatar img { display: block; width: 100%; height: 100%; object-fit: cover; }
.detail-teacher__avatar svg { width: 19px; height: 19px; }
.detail-teacher__name { min-width: 0; overflow-wrap: anywhere; }
.detail-teachers-empty { margin: 4px 0; color: var(--muted); font-size: .72rem; line-height: 1.9; }
.detail-selected { margin-top: 19px; padding-top: 19px; border-top: 1px solid var(--line); }
.detail-tuition { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 9px; color: var(--muted); font-size: .7rem; }
.detail-tuition > span:first-child { margin-inline-end: auto; }
.detail-tuition del { color: #898177; font-size: .7rem; }
#class-discount { padding: 3px 6px; border-radius: 5px; color: var(--brand); background: #f8e9e4; font-size: .65rem; font-weight: 700; }
.detail-tuition__amount { margin: 8px 0 19px; color: var(--ink); font-size: 1.6rem; line-height: 1.7; font-weight: 800; letter-spacing: -.025em; }
.detail-tuition__amount small { color: var(--muted); font-size: .75rem; font-weight: 500; letter-spacing: 0; }
.detail-tuition__amount > bdi + span { color: var(--muted); font-size: .8rem; font-weight: 500; letter-spacing: 0; }
.detail-tuition__amount > span:only-child { font-size: 1.05rem; font-weight: 600; }
.detail-selected > .button { width: 100%; min-height: 52px; border-radius: 12px; font-size: .87rem; }
.detail-selected > .button:is(:disabled, [aria-disabled="true"]) { border-color: #dad5cc; color: #716d64; background: #eeeae3; box-shadow: none; cursor: default; }
.detail-selected > .button:is(:disabled, [aria-disabled="true"]):hover { transform: none; }
.detail-course-price { margin-top: 18px; border-top: 1px solid #ded5c9; }
.detail-course-price > summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 44px; padding-block: 10px; color: var(--muted); font-size: .71rem; line-height: 1.9; font-weight: 600; list-style: none; cursor: pointer; }
.detail-course-price > summary::-webkit-details-marker { display: none; }
.detail-course-price > summary::after { content: "+"; flex: none; color: var(--brand); font-size: 1.15rem; line-height: 1; }
.detail-course-price[open] > summary::after { content: "−"; }
.detail-course-price > summary:hover { color: var(--brand); }
.detail-course-price > summary:focus-visible { outline-offset: 1px; border-radius: 5px; }
.detail-course-price dl { margin: 0; padding-block: 1px 4px; }
.detail-course-price dl > div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 14px; padding-block: 4px; font-size: .7rem; line-height: 1.95; }
.detail-course-price dt { color: var(--muted); }
.detail-course-price dd { margin: 0; font-weight: 600; }
.detail-class-identifiers { display: grid; gap: 10px; margin: 0 0 20px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; }
.detail-class-identifiers > div { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.detail-class-identifiers dt { color: var(--muted); font-size: .78rem; flex-shrink: 0; }
.detail-class-identifiers dd { margin: 0; color: var(--ink); font-size: .87rem; font-weight: 700; overflow-wrap: anywhere; min-width: 0; }
#classes-empty,
#class-selection-notice { padding: 13px 14px; border: 1px solid #e3d6c0; border-radius: 11px; color: #736247; background: #faf5e9; font-size: .75rem; line-height: 2; }
#class-selection-notice { margin-top: 16px; }
.detail-error { min-height: 430px; padding-block: 85px; }
.detail-error h1 { max-width: 900px; margin-bottom: 20px; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.7; }
.detail-error p { margin-bottom: 26px; color: var(--muted); line-height: 2; }

body.course-detail:has(.detail-mobile-action:not([hidden]):not(.is-hidden)) { padding-bottom: calc(134px + var(--page-action-safe-bottom) + var(--mobile-navigation-height)); }
.detail-mobile-action { position: fixed; z-index: 45; left: 50%; bottom: calc(18px + var(--mobile-navigation-height)); display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 18px; width: min(1000px, calc(100% - 64px)); min-height: 90px; padding: 15px 22px calc(15px + var(--page-action-safe-bottom)); transform: translateX(-50%); border: 1px solid #d9cbbb; border-radius: 18px; background: rgba(250, 248, 243, .98); box-shadow: 0 12px 45px rgba(30, 21, 14, .15); }
.detail-mobile-action.is-hidden { display: none !important; }
.detail-dock-summary { min-width: 0; overflow-wrap: anywhere; }
.detail-dock-summary small { display: block; color: var(--muted); font-size: .73rem; line-height: 1.85; }
.detail-dock-summary strong { display: block; color: var(--ink); font-size: 1.06rem; line-height: 1.9; }
.detail-dock-actions { display: flex; align-items: center; gap: 12px; min-width: 0; }
.detail-dock-actions:has(.detail-dock-change[hidden]) { grid-template-columns: minmax(0, 1fr); }
.detail-dock-change { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 10px 16px; border: 1px solid #ded3c6; border-radius: 11px; color: var(--ink); background: #fff; font-size: .8rem; line-height: 1.7; font-weight: 600; text-align: center; }
.detail-dock-change:hover { border-color: var(--brand); color: var(--brand); }
.detail-mobile-action .button { flex: none; min-height: 50px; min-width: 176px; padding: 12px 20px; border-radius: 11px; font-size: .84rem; }
.detail-mobile-action .button:is(:disabled, [aria-disabled="true"]) { border-color: #dad5cc; color: #716d64; background: #eeeae3; box-shadow: none; cursor: default; }
.detail-mobile-action .button:is(:disabled, [aria-disabled="true"]):hover { transform: none; }
.course-detail.menu-open .detail-mobile-action { visibility: hidden; }
.detail-dialog { width: min(600px, calc(100% - 32px)); max-height: calc(100dvh - 40px); padding: 29px; overflow-y: auto; overscroll-behavior: contain; border: 1px solid #d9cbbd; border-radius: 23px; color: var(--ink); background: var(--paper-light); box-shadow: var(--shadow-lg); overflow-wrap: anywhere; }
.detail-dialog::backdrop { background: rgba(21, 25, 22, .52); backdrop-filter: blur(5px); }
.detail-dialog > header { display: flex; align-items: center; justify-content: space-between; gap: 13px; margin-bottom: 20px; }
.detail-dialog > header .section-kicker { margin: 0; font-size: .69rem; }
.detail-dialog h2 { margin-bottom: 20px; font-size: 1.7rem; line-height: 1.8; }
.detail-dialog > p { color: var(--muted); font-size: .85rem; line-height: 2; }
.detail-dialog .detail-class-facts dt { font-size: .8rem; }
.detail-dialog .detail-class-facts dd { font-size: .84rem; }
.detail-dialog > .button { margin-top: 8px; }

.detail-package-badge { display: inline-flex; align-items: center; margin-bottom: 12px; padding: 5px 12px; border: 1px solid #d8bf9e; border-radius: 7px; color: #74522d; background: #f6ecd9; font-size: .74rem; font-weight: 700; line-height: 1.9; }
.detail-package { border-color: #d7c4ab; background: linear-gradient(135deg, #fff, #fbf6ec); }
.detail-package__intro { margin: 0 0 23px; color: var(--muted); font-size: .85rem; line-height: 2.1; }
.detail-package__lessons { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; }
.detail-package__lessons > li { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 15px; padding: 18px; border: 1px solid #e1d5c4; border-radius: 13px; background: #fff; }
.detail-package__number { display: grid; place-items: center; align-self: start; width: 42px; height: 42px; border-radius: 11px; color: var(--brand); background: #f7eee6; font-size: .95rem; font-weight: 700; }
.detail-package__lesson-title { display: flex; align-items: center; justify-content: space-between; gap: 13px; min-height: 44px; color: var(--ink); font-size: 1rem; line-height: 1.9; font-weight: 800; }
.detail-package__lesson-title:hover { color: var(--brand); }
.detail-package__lesson-title svg { flex: none; width: 19px; height: 19px; color: var(--brand); }
.detail-package__lessons p { margin: 3px 0 8px; color: var(--muted); font-size: .76rem; line-height: 1.9; }
.detail-package__access { display: inline-block; color: #486346; font-size: .71rem; line-height: 1.9; }
.detail-package__note { margin: 19px 0 0; color: #8b7860; font-size: .69rem; line-height: 2; }
.detail-class-context { margin-bottom: 19px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.detail-class-context > strong { display: block; font-size: .83rem; line-height: 2; }
.detail-class-context > .section-kicker { margin-bottom: 5px; font-size: .64rem; }
.detail-offering-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--brand); font-size: .74rem; line-height: 1.9; }
.detail-offering-link svg { width: 16px; height: 16px; flex: none; }
.detail-offering-link:hover { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 650px) {
  .detail-package__lessons > li { grid-template-columns: 34px minmax(0, 1fr); gap: 10px; padding: 13px; }
  .detail-package__number { width: 34px; height: 38px; font-size: .85rem; }
  .detail-package__lesson-title { font-size: .88rem; }
}

@media (max-width: 1100px) {
  .detail-hero__grid { grid-template-columns: minmax(0, 1fr) 320px; gap: 38px; }
  .detail-layout { gap: 24px; grid-template-columns: minmax(0, 1fr) 320px; }
  .detail-section { padding: 25px; }
  .detail-enrollment { padding-inline: 19px; }
  .detail-section-nav { gap: 18px; }
  .detail-metrics > div { padding-inline: 18px; }
}

@media (max-width: 900px) {
  .detail-hero__grid { grid-template-columns: minmax(0, 1fr) 270px; gap: 28px; }
  .detail-hero__copy h1 { font-size: 2.15rem; }
  .detail-intro { font-size: .88rem; }
  .detail-hero__actions { gap: 8px 12px; }
  .detail-hero__actions .button { padding-inline: 18px; font-size: .79rem; }
  .detail-layout { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .detail-enrollment { position: static; width: 100%; max-height: none; overflow: visible; padding: 26px; }
  .detail-enrollment h2 { font-size: 1.35rem; }
  .detail-enrollment__intro { font-size: .85rem; }
  .detail-class-option { padding: 16px; }
  .detail-class-option__body strong { font-size: .9rem; }
  .detail-teacher { font-size: .81rem; }
  .detail-class-facts dt { font-size: .8rem; }
  .detail-class-facts dd { font-size: .84rem; }
  .detail-course-price dl > div { font-size: .79rem; }
  .detail-course-price > summary { font-size: .78rem; }
  .detail-class-option__schedule { font-size: .78rem; }
  .detail-tuition { font-size: .78rem; }
  .detail-tuition__amount { font-size: 1.8rem; }
  body.course-detail:has(.detail-mobile-action:not([hidden]):not(.is-hidden)) { padding-bottom: calc(112px + var(--page-action-safe-bottom) + var(--mobile-navigation-height)); }
  .detail-mobile-action { right: 0; bottom: var(--mobile-navigation-height); left: 0; width: 100%; min-height: 88px; padding: 13px 24px calc(13px + var(--page-action-safe-bottom)); transform: none; border-inline: 0; border-bottom: 0; border-radius: 0; box-shadow: 0 -6px 28px rgba(30, 21, 14, .08); }
  .detail-dock-summary strong { font-size: 1rem; }
  .detail-dock-summary small { font-size: .69rem; }
}

@media (max-width: 650px) {
  .detail-hero { padding: 16px 0 30px; }
  .detail-breadcrumb { gap: 5px 9px; margin-bottom: 16px; font-size: .69rem; }
  .detail-hero__grid { grid-template-columns: minmax(0, 1fr); gap: 27px; }
  .detail-hero__copy { padding-block: 0; }
  .detail-hero__copy .section-kicker { margin-bottom: 9px; }
  .detail-hero__copy h1 { font-size: clamp(1.85rem, 6.3vw, 2.5rem); line-height: 1.65; }
  .detail-latin { margin-bottom: 16px; font-size: .84rem; }
  .detail-intro { margin-bottom: 23px; font-size: .87rem; line-height: 2.1; }
  .detail-metrics { gap: 14px 0; margin-bottom: 24px; }
  .detail-metrics > div { padding-inline: 17px; }
  .detail-metrics dd { font-size: 1rem; }
  .detail-hero__actions { gap: 9px 13px; }
  .detail-hero__actions .button--primary { flex: 1; }
  .detail-hero__actions .button--text { padding-inline: 7px; }
  .detail-sample-note { margin-top: 14px; font-size: .67rem; }
  .detail-poster { width: min(100%, 390px); margin-inline: auto; }
  .detail-poster img { border-radius: 15px; }
  .detail-poster figcaption { margin-top: 11px; }
  .detail-section-nav { gap: 14px; }
  .detail-section-nav a { min-height: 60px; padding-block: 11px; font-size: .75rem; }
  .detail-section-nav svg { display: none; }
  .detail-layout { gap: 26px; padding-block: 25px 55px; }
  .detail-sections { gap: 18px; }
  .detail-section { padding: 23px 20px; border-radius: 17px; }
  .detail-section,
  .detail-enrollment { scroll-margin-top: 76px; }
  .detail-section__heading { gap: 11px; margin-bottom: 20px; }
  .detail-section__heading > span { width: 41px; height: 41px; border-radius: 12px; }
  .detail-section__heading > span svg { width: 21px; height: 21px; }
  .detail-section__heading h2 { font-size: 1.15rem; }
  .detail-rich-text { font-size: .86rem; line-height: 2.15; }
  .detail-rich-text h3 { font-size: .94rem; }
  .detail-rich-text ul,
  .detail-rich-text ol { padding-inline-start: 19px; }
  .detail-rich-text th,
  .detail-rich-text td { padding: 12px; }
  .detail-enrollment { padding: 23px 20px; border-radius: 17px; }
  .detail-enrollment h2 { font-size: 1.2rem; }
  .detail-enrollment__intro { font-size: .79rem; }
  .detail-class-option { padding: 12px; }
  .detail-class-option__body strong { font-size: .83rem; }
  .detail-class-option__schedule { font-size: .73rem; }
  .detail-teacher { font-size: .76rem; }
  .detail-class-facts > div { grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); }
  .detail-class-facts dt { font-size: .74rem; }
  .detail-class-facts dd { font-size: .78rem; }
  body.course-detail:has(.detail-mobile-action:not([hidden]):not(.is-hidden)) { padding-bottom: calc(132px + var(--page-action-safe-bottom) + var(--mobile-navigation-height)); }
  .detail-mobile-action { grid-template-columns: minmax(0, 1fr); min-height: 104px; gap: 8px; padding: 10px 16px calc(10px + var(--page-action-safe-bottom)); }
  .detail-dock-summary { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 3px 12px; }
  .detail-dock-summary strong { font-size: .9rem; }
  .detail-dock-summary small { font-size: .67rem; }
  .detail-dock-actions { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr); gap: 10px; }
  .detail-dock-change { min-height: 46px; padding: 9px 10px; font-size: .76rem; }
  .detail-mobile-action .button { width: 100%; min-width: 0; min-height: 46px; padding: 10px 13px; font-size: .78rem; }
  .detail-mobile-action .button svg { width: 16px; height: 16px; }
  .detail-dialog { width: calc(100% - 24px); max-height: calc(100dvh - 24px); padding: 22px; border-radius: 19px; }
  .detail-dialog h2 { font-size: 1.35rem; }
  .detail-dialog .detail-class-facts > div { grid-template-columns: minmax(0, 1fr); gap: 3px; }
  .detail-dialog .detail-class-facts dd { text-align: start; }
  .detail-dialog > .button { width: 100%; }
  .detail-error { min-height: 370px; padding-block: 55px; }
}

@media (max-width: 380px) {
  .detail-hero__actions { flex-direction: column; align-items: stretch; }
  .detail-hero__actions .button { width: 100%; }
  .detail-section,
  .detail-enrollment { padding-inline: 16px; }
  .detail-metrics > div { padding-inline: 13px; }
  .detail-metrics dt { font-size: .68rem; }
  .detail-mobile-action .button svg { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .detail-class-option { transition: none; }
}

@media print {
  .course-detail { padding-bottom: 0 !important; }
  .detail-nav-wrap,
  .detail-mobile-action,
  .detail-dialog,
  .detail-hero__actions,
  .detail-selected > .button { display: none !important; }
  .detail-hero { padding-block: 15px; background: #fff; }
  .detail-hero__grid { grid-template-columns: minmax(0, 1fr) 220px; }
  .detail-layout { display: block; padding-block: 20px; }
  .detail-section { margin-bottom: 20px; }
  .detail-enrollment { position: static; max-height: none; overflow: visible; margin-top: 20px; box-shadow: none; }
  .detail-poster img { box-shadow: none; }
  .detail-table-scroll { overflow: visible; }
  .detail-section__heading { break-after: avoid; }
  .detail-rich-text tr { break-inside: avoid; }
}