.detail-shell { max-width: calc(1080px + var(--gutter) * 2); }
    .detail-masthead { padding: 28px 0 32px; background: var(--c-cream); }
    .detail-masthead .breadcrumb { margin-bottom: 28px; display: flex; flex-wrap: wrap; align-items: baseline; row-gap: 4px; }
    .detail-preview-note { margin-left: auto; color: var(--c-stone); font-size: 13px; }
    .detail-category { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 16px; font-size: 14px; }
    .detail-category .tag { background: var(--c-green-dk); color: var(--c-cream); padding: 3px 12px; }
    .detail-category > span:last-child { color: var(--c-gold-text); }
    .detail-title { width: 100%; max-width: none; font-size: clamp(29px, 2.5vw + 10px, 42px); line-height: 1.45; text-wrap: balance; overflow-wrap: break-word; }
    .detail-deck { max-width: 780px; margin: 20px 0 24px; font-size: clamp(16px, .3vw + 14px, 18px); line-height: 1.85; }
    .detail-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding-top: 18px; border-top: 1px solid var(--c-line); font-size: 14px; }
    .detail-meta > span { display: inline-flex; flex-wrap: wrap; gap: 6px; }
    .detail-meta .meta-label { color: var(--c-stone); }
    .detail-meta .meta-value { color: var(--c-ink); }
    .detail-meta .detail-back { margin-left: auto; min-height: 44px; display: inline-flex; align-items: center; text-decoration: underline; text-underline-offset: 5px; }
    .detail-article { padding-top: 40px; padding-bottom: 0; }
    .detail-cover { margin: 0 0 48px; }
    .detail-cover .media { aspect-ratio: 2.8 / 1; }
    .detail-cover img { object-position: center 52%; }
    .detail-cover figcaption, .detail-figure figcaption { margin-top: 10px; font-size: 13px; line-height: 1.7; color: var(--c-stone); }
    .detail-layout { display: grid; grid-template-columns: minmax(0, 720px) minmax(0, 208px); grid-template-areas: "body toc"; justify-content: start; gap: clamp(40px, 5.5vw, 80px); align-items: start; }
    .detail-sidebar { grid-area: toc; position: sticky; top: calc(var(--header-h-compact) + 32px); padding: 4px 0 0 20px; border-left: 1px solid var(--c-line); }
    .detail-sidebar__title { font: 600 14px/1.5 var(--f-sans); margin: 0 0 16px; color: var(--c-ink); }
    .detail-toc__overview { padding: 0 0 18px; border-bottom: 1px solid var(--c-line); }
    .detail-toc__overview-title { font: 600 14px/1.5 var(--f-sans); margin: 0 0 9px; color: var(--c-ink); }
    .detail-toc__overview-copy { margin: 0 0 14px; font-size: 13px; line-height: 1.8; color: var(--c-stone); }
    .detail-toc__facts { display: grid; gap: 9px; margin: 0; }
    .detail-toc__facts dt { font-size: 12px; line-height: 1.5; color: var(--c-stone); }
    .detail-toc__facts dd { margin: 3px 0 0; font-size: 13px; line-height: 1.7; color: var(--c-ink); }
    .detail-toc__nav-title { margin-top: 18px; }
    .detail-toc summary { display: none; }
    .detail-toc nav ul { display: grid; gap: 8px; }
    .detail-toc a { display: block; min-height: 44px; padding: 9px 0; font-size: 14px; line-height: 1.7; color: var(--c-stone); text-underline-offset: 5px; }
    .detail-toc a:hover { color: var(--c-green); text-decoration: underline; }
    .detail-toc a[aria-current="location"] { color: var(--c-green-dk); font-weight: 600; }
    .detail-toc__original { margin-top: 20px; padding-top: 12px; border-top: 1px solid var(--c-line); }
    .detail-toc__original a { color: var(--c-green-dk); }
    .detail-body { grid-area: body; min-width: 0; font-size: 17px; line-height: 1.95; }
    .detail-body p { margin-bottom: 1.25em; }
    .detail-body h2 { font-size: clamp(23px, .6vw + 16px, 27px); line-height: 1.55; margin: 46px 0 18px; scroll-margin-top: 104px; text-wrap: pretty; }
    .detail-body h3 { font-size: 19px; line-height: 1.6; margin: 28px 0 12px; }
    .detail-body a { text-decoration: underline; text-underline-offset: 5px; overflow-wrap: anywhere; }
    .detail-body strong { color: var(--c-ink); font-weight: 600; }
    .detail-lead { padding-bottom: 26px; border-bottom: 1px solid var(--c-line); }
    .detail-lead p { margin: 0; font-size: 19px; line-height: 1.9; font-family: var(--f-serif-text); color: var(--c-ink); }
    .detail-quote { margin: 28px 0 32px; padding: 24px 28px; border: 0; border-left: 3px solid var(--c-green); background: var(--c-cream); border-radius: 0 var(--radius) var(--radius) 0; }
    .detail-quote p { margin: 0; font-family: var(--f-serif-text); font-size: 20px; line-height: 1.85; color: var(--c-green-dk); }
    .detail-quote footer { margin-top: 10px; font-size: 13px; }
    .detail-table-wrap { margin: 24px 0; }
    .detail-ielts .detail-stat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 20px 0; }
    .detail-ielts .detail-stat { display: grid; align-content: start; gap: 6px; padding: 18px; border: 1px solid var(--c-line); background: var(--c-cream); }
    .detail-ielts .detail-stat strong { color: var(--c-green-dk); font-size: 25px; line-height: 1.35; }
    .detail-ielts .detail-stat span { font-size: 14px; font-weight: 600; }
    .detail-ielts .detail-stat small { color: var(--c-stone); font-size: 12px; line-height: 1.6; }
    .detail-ielts .detail-timeline { display: grid; gap: 0; margin: 20px 0 28px; padding: 0; list-style: none; }
    .detail-ielts .detail-timeline li { display: grid; grid-template-columns: 118px minmax(0, 1fr); gap: 16px; padding: 16px 0; border-top: 1px solid var(--c-line); }
    .detail-ielts .detail-timeline time { color: var(--c-gold-text); font-weight: 600; }
    .detail-ielts .detail-timeline p { margin: 0; }
    .detail-ielts .detail-card { margin: 22px 0; padding: 22px 24px; border: 1px solid var(--c-line); background: #fff; }
    .detail-ielts .detail-card h3 { margin: 0 0 14px; font-size: 18px; }
    .detail-ielts .detail-card p:last-child, .detail-ielts .detail-card ul:last-child, .detail-ielts .detail-card ol:last-child { margin-bottom: 0; }
    .detail-ielts .detail-card ul, .detail-ielts .detail-card ol { padding-left: 1.4em; }
    .detail-ielts .detail-card li { margin: 0 0 10px; padding-left: 4px; }
    .detail-ielts .detail-card li::marker { color: var(--c-gold-text); }
    .detail-ielts .detail-card--prediction { border-left: 3px solid var(--c-gold-text); background: var(--c-cream); }
    .detail-ielts .detail-source-note { color: var(--c-stone); font-size: 14px; line-height: 1.8; }
    .detail-ielts .detail-advice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
    .detail-ielts .detail-card ul { list-style: disc; }
    .detail-ielts .detail-card ol { list-style: decimal; }
    .detail-ielts .detail-card__eyebrow, .detail-ielts .detail-topic-line { margin: 0 0 12px; color: var(--c-gold-text); font-size: 13px; font-weight: 600; line-height: 1.7; }
    .detail-ielts .detail-prediction-label { display: inline-block; margin-left: 8px; padding: 0 6px; background: #fff; color: var(--c-gold-text); font-size: 12px; font-weight: 600; line-height: 1.8; }
    .detail-table { width: 100%; table-layout: fixed; border-collapse: collapse; font-size: 15px; line-height: 1.8; }
    .detail-table caption { text-align: left; margin-bottom: 12px; font-weight: 600; color: var(--c-ink); }
    .detail-table th, .detail-table td { padding: 15px 18px; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); text-align: left; vertical-align: top; overflow-wrap: anywhere; }
    .detail-table th { color: var(--c-green-dk); font-weight: 600; }
    .detail-table thead { background: var(--c-cream); }
    .detail-table th:first-child { width: 24%; }
    .detail-table td p { margin: 0; }
    .detail-figure { margin: 28px 0; }
    .detail-figure .media { aspect-ratio: 16 / 9; }
    .detail-points { margin: 22px 0 0; padding: 0 0 0 1.4em; list-style: decimal; }
    .detail-points li { padding-left: 5px; margin-bottom: 14px; }
    .detail-points li::marker { color: var(--c-gold-text); }
    .detail-original { margin: 0 0 28px; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); scroll-margin-top: 100px; }
    .detail-original > summary { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; list-style: none; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--c-green-dk); }
    .detail-original > summary::-webkit-details-marker { display: none; }
    .detail-original__action { display: flex; gap: 10px; align-items: center; font-size: 14px; font-weight: 400; white-space: nowrap; }
    .detail-original__action::after { content: ""; width: 8px; height: 8px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform var(--t-fast); }
    .detail-original[open] .detail-original__action::after { transform: rotate(225deg) translate(-2px, -1px); }
    .detail-original .when-open { display: none; }
    .detail-original[open] .when-open { display: inline; }
    .detail-original[open] .when-closed { display: none; }
    .detail-original__content { padding-bottom: 24px; }
    .detail-original__content > p { font-size: 14px; margin-bottom: 16px; }
    .detail-original__image { width: 100%; max-width: 600px; height: auto; margin: 0 auto; border: 1px solid var(--c-line); }
    .detail-source { padding: 28px 0; font-size: 14px; line-height: 1.85; }
    .detail-source h2 { font-family: var(--f-sans); font-size: 15px; margin: 0 0 10px; }
    .detail-source p { margin: 0 0 8px; }
    .detail-source p:last-child { margin-bottom: 0; }
    .detail-end { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 0 0; border-top: 1px solid var(--c-line); font-size: 14px; }
    .detail-end p { margin: 0; }
    .detail-end strong { display: block; font-weight: 500; }
    .detail-end a { min-height: 44px; display: inline-flex; align-items: center; }
    .detail-related { padding: 56px 0 64px; margin-top: 40px; border-top: 1px solid var(--c-line); }
    .detail-related__head { display: flex; justify-content: space-between; gap: 24px; align-items: center; margin-bottom: 24px; }
    .detail-related__head h2 { font-size: 26px; }
    .detail-related__head a { font-size: 14px; min-height: 44px; display: inline-flex; align-items: center; text-decoration: underline; text-underline-offset: 5px; }
    .detail-related__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
    .detail-related__link { display: grid; grid-template-columns: 144px minmax(0, 1fr); gap: 22px; align-items: start; color: inherit; }
    .detail-related__link .media { aspect-ratio: 4 / 3; }
    .detail-related__link h3 { margin: 6px 0 8px; font-family: var(--f-serif); font-size: 20px; line-height: 1.6; transition: color var(--t-fast); }
    .detail-related__link:hover h3 { color: var(--c-green); }
    .detail-related__link small { font-size: 13px; color: var(--c-stone); }
    .detail-related__category { color: var(--c-gold-text); font-size: 13px; }
    @media (max-width: 1100px) and (min-width: 992px) {
      .detail-layout { grid-template-columns: minmax(0, 720px) 192px; gap: 40px; }
      .detail-related__link { grid-template-columns: 112px minmax(0, 1fr); gap: 18px; }
    }
    @media (min-width: 992px) and (max-height: 680px) {
      .detail-sidebar { position: static; top: auto; }
    }
    @media (max-width: 991px) {
      .detail-shell { max-width: calc(760px + var(--gutter) * 2); }
      .detail-layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "toc" "body"; gap: 28px; }
      .detail-sidebar { padding: 0; position: static; border-left: 0; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
      .detail-sidebar__title { display: none; }
      .detail-toc summary { display: flex; align-items: center; justify-content: space-between; min-height: 52px; padding: 12px 0; cursor: pointer; list-style: none; font-size: 15px; font-weight: 500; color: var(--c-green-dk); }
      .detail-toc summary::-webkit-details-marker { display: none; }
      .detail-toc summary::after { content: ""; width: 8px; height: 8px; margin-right: 3px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg) translateY(-2px); }
      .detail-toc[open] summary::after { transform: rotate(225deg) translate(-2px, -1px); }
      .detail-toc nav { padding: 14px 0 12px; border-top: 1px solid var(--c-line); }
      .detail-toc nav ul { gap: 0; }
      .detail-toc__original { margin-top: 8px; padding-top: 8px; }
      .detail-cover { margin-bottom: 28px; }
      .detail-title { font-size: clamp(29px, 4.6vw, 40px); }
      .detail-related__list { gap: 28px; }
      .detail-related__link { grid-template-columns: 1fr; gap: 16px; }
      .detail-related__link .media { aspect-ratio: 16 / 9; }
    }
    @media (max-width: 575px) {
      .detail-masthead { padding: 20px 0 28px; }
      .detail-masthead .breadcrumb { font-size: 13px; margin-bottom: 22px; }
      .detail-preview-note { width: 100%; margin-left: 0; margin-top: 4px; font-size: 12px; }
      .detail-title { font-size: 30px; line-height: 1.5; }
      .detail-deck { margin: 16px 0 20px; font-size: 16px; }
      .detail-meta { gap: 6px 20px; padding-top: 14px; font-size: 13px; }
      .detail-meta > span:first-child { flex-basis: 100%; }
      .detail-meta .detail-back { display: none; }
      .detail-article { padding-top: 24px; }
      .detail-cover .media { aspect-ratio: 16 / 9; }
      .detail-body { font-size: 16px; line-height: 1.9; }
      .detail-body h2 { margin-top: 34px; font-size: 23px; }
      .detail-lead { padding-bottom: 22px; }
      .detail-lead p { font-size: 18px; }
      .detail-quote { padding: 20px; margin: 24px 0; }
      .detail-quote p { font-size: 19px; }
      .detail-table { font-size: 14px; }
    .detail-ielts .detail-stat-grid { grid-template-columns: 1fr; gap: 8px; }
    .detail-ielts .detail-stat { grid-template-columns: auto 1fr; align-items: baseline; gap: 4px 10px; padding: 13px 16px; }
    .detail-ielts .detail-stat strong { grid-row: span 2; font-size: 21px; }
    .detail-ielts .detail-stat small { grid-column: 2; }
    .detail-ielts .detail-timeline li { grid-template-columns: 1fr; gap: 3px; padding: 13px 0; }
    .detail-ielts .detail-card { padding: 18px; }
    .detail-ielts .detail-advice-grid { grid-template-columns: 1fr; gap: 0; }
      .detail-table th, .detail-table td { padding: 12px 10px; }
      .detail-table th:first-child { width: 28%; }
      .detail-related { padding: 32px 0 40px; margin-top: 32px; }
      .detail-related__head { margin-bottom: 20px; gap: 12px; }
      .detail-related__head h2 { font-size: 24px; }
      .detail-related__list { grid-template-columns: minmax(0, 1fr); gap: 24px; }
      .detail-related__link { grid-template-columns: 100px minmax(0, 1fr); gap: 16px; }
      .detail-related__link .media { aspect-ratio: 1 / 1; }
      .detail-related__link h3 { font-size: 18px; margin-top: 4px; }
      .detail-related__link small { font-size: 12px; }
      .detail-end { padding-top: 18px; }
    }