.article-hero { padding: 68px 0 80px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 62px; color: var(--soft); font-size: 12px; }
.breadcrumbs a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.article-heading { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: 80px; align-items: end; }
.article-kicker { margin: 0 0 22px; color: var(--soft); font-size: 13px; }
.article-heading h1 { max-width: 930px; margin: 0; font-family: var(--serif); font-size: clamp(60px, 7vw, 92px); font-weight: 400; letter-spacing: -.027em; line-height: 1.01; }
.article-heading h1 em { color: inherit; font-weight: inherit; }
.article-deck { max-width: 800px; margin: 30px 0 0; color: var(--muted); font-size: 19px; line-height: 1.5; }
.article-passport { overflow: hidden; background: var(--mist); border-radius: 20px; }
.passport-row { display: grid; grid-template-columns: 92px 1fr; gap: 16px; padding: 16px 18px; border-bottom: 1px solid var(--line); font-size: 12px; }
.passport-row:last-child { border-bottom: 0; }
.passport-row span { color: var(--soft); }
.passport-row b { font-weight: 450; }

.article-visual { height: min(43vw, 555px); min-height: 430px; overflow: hidden; background: var(--fog); }
.article-visual .page-shell { position: relative; height: 100%; }
.article-visual .page-shell::before { content: ""; position: absolute; inset: 5% 13%; background: radial-gradient(circle, rgba(251,225,209,.92), rgba(251,225,209,0) 67%); filter: blur(10px); }
.visual-label { position: absolute; top: 35px; left: 0; z-index: 3; color: var(--soft); font-size: 11px; }
.comparison-card { position: absolute; z-index: 2; width: 37%; min-height: 300px; padding: 26px; background: var(--paper); border-radius: 20px; box-shadow: var(--shadow); }
.comparison-card span { color: var(--soft); font-size: 12px; }
.comparison-card h2, .comparison-title { margin: 62px 0 80px; font-family: var(--serif); font-size: clamp(31px, 3.8vw, 50px); font-weight: 400; letter-spacing: -.02em; line-height: 1.05; }
.comparison-card p { margin: 0; color: var(--muted); font-size: 11px; }
.comparison-one { top: 16%; left: 9%; transform: rotate(-4deg); }
.comparison-two { right: 8%; bottom: 10%; transform: rotate(4deg); }
.analysis-chip { position: absolute; z-index: 4; top: 48%; left: 50%; padding: 14px 18px; color: var(--brown); background: var(--peach); border-radius: 14px; box-shadow: 0 10px 30px rgba(93,42,26,.09); font-family: var(--serif); font-size: 18px; transform: translate(-50%,-50%) rotate(-2deg); }
.analysis-chip b { margin-right: 5px; font-weight: 400; }

.article-layout { display: grid; grid-template-columns: 190px minmax(0, 720px) minmax(210px, 1fr); gap: clamp(38px, 5vw, 70px); align-items: start; padding-block: 95px 125px; }
.article-toc { position: sticky; top: 32px; }
.article-toc > b { display: block; margin-bottom: 17px; font-size: 11px; font-weight: 500; }
.article-toc nav { display: flex; flex-direction: column; }
.article-toc a { padding: 10px 0; color: var(--muted); border-bottom: 1px solid var(--line); font-size: 12px; line-height: 1.35; }
.article-toc a:hover { color: var(--ink); }
.article-body { min-width: 0; }
.article-body > p:first-child { margin-top: 0; font-family: var(--serif); font-size: 25px; line-height: 1.5; }
.article-body p, .article-body li { font-size: 16px; line-height: 1.72; }
.article-body p { margin: 0 0 24px; }
.article-body h2 { margin: 78px 0 25px; font-family: var(--serif); font-size: clamp(40px, 4vw, 52px); font-weight: 400; letter-spacing: -.02em; line-height: 1.08; }
.article-body h3 { margin: 0 0 14px; font-family: var(--serif); font-size: 28px; font-weight: 400; letter-spacing: -.015em; }
.article-body ul, .article-body ol { margin: 0 0 30px; padding-left: 24px; }
.article-body li { margin-bottom: 10px; padding-left: 6px; }
.article-body strong { font-weight: 500; }
.article-body blockquote { margin: 42px 0; padding: 34px; color: var(--brown); background: var(--peach); border-radius: 24px; font-family: var(--serif); font-size: 28px; line-height: 1.35; }
.quick-answer { margin: 34px 0 46px; padding: 28px 30px; background: var(--mist); border: 1px solid var(--line); border-radius: 22px; }
.quick-answer > b, .sources > b, .editorial-note > b { display: block; margin-bottom: 12px; color: var(--soft); font-size: 11px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; }
.quick-answer p:last-child { margin-bottom: 0; }
.table-wrap { margin: 34px 0; overflow-x: auto; border-radius: 20px; -webkit-overflow-scrolling: touch; }
.article-body table { width: 100%; min-width: 620px; border-collapse: collapse; background: var(--fog); font-size: 13px; }
.article-body th, .article-body td { padding: 15px 17px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.article-body th { color: var(--soft); font-size: 11px; font-weight: 500; }
.faq { margin-top: 78px; }
.faq-item { border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary { padding: 20px 38px 20px 0; cursor: pointer; font-family: var(--serif); font-size: 23px; line-height: 1.25; }
.faq-item p { max-width: 650px; padding: 0 0 20px; color: var(--muted); }
.sources, .editorial-note { margin-top: 54px; padding: 24px 26px; background: var(--fog); border-radius: 20px; }
.sources ol { margin-bottom: 0; }
.sources a { text-decoration: underline; text-underline-offset: 3px; }
.editorial-note p { margin: 0; color: var(--muted); font-size: 13px; }
.author-card { display: grid; grid-template-columns: 54px 1fr; gap: 18px; margin-top: 28px; padding: 24px 26px; border: 1px solid var(--line); border-radius: 20px; }
.author-mark { width: 54px; height: 54px; display: grid; place-items: center; color: var(--paper); background: var(--ink); border-radius: 50%; font-size: 13px; }
.author-card b { display: block; margin: 3px 0 7px; font-weight: 500; }
.author-card p { margin: 0; color: var(--muted); font-size: 13px; }
.check-table { margin: 34px 0; overflow: hidden; background: var(--fog); border-radius: 20px; }
.check-row { display: grid; grid-template-columns: 34px 150px 1fr; gap: 17px; padding: 17px 20px; border-bottom: 1px solid var(--line); font-size: 13px; line-height: 1.5; }
.check-row:last-child { border-bottom: 0; }
.check-row span { color: var(--soft); }
.check-row b { font-weight: 500; }
.check-row p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.prompt-box { margin: 38px 0; overflow: hidden; background: var(--fog); border-radius: 20px; box-shadow: 0 0 0 1px rgba(4,23,43,.04); }
.prompt-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 14px 18px; border-bottom: 1px solid var(--line); color: var(--soft); font-size: 11px; }
.copy-button { min-height: 34px; padding: 0 13px; color: var(--paper); background: var(--ink); border: 0; border-radius: 99px; cursor: pointer; font-size: 11px; }
.prompt-box pre { margin: 0; padding: 23px; white-space: pre-wrap; font-family: var(--sans); font-size: 13px; line-height: 1.65; }
.step { display: grid; grid-template-columns: 42px 1fr; gap: 20px; margin-top: 14px; padding: 22px; background: var(--mist); border-radius: 18px; }
.step-number { width: 38px; height: 38px; display: grid; place-items: center; background: var(--paper); border-radius: 50%; font-size: 11px; }
.step p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
.article-aside { position: sticky; top: 32px; }
.metric-card, .download-card { padding: 22px; border-radius: 20px; }
.metric-card { background: var(--mist); }
.aside-label { display: block; margin-bottom: 27px; color: var(--soft); font-size: 11px; }
.metric-card b { display: block; font-family: var(--serif); font-size: 27px; font-weight: 400; letter-spacing: -.015em; line-height: 1.08; }
.metric-card p { margin: 15px 0 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.download-card { margin-top: 14px; background: var(--fog); box-shadow: 0 0 0 1px rgba(4,23,43,.04); }
.download-card b { display: block; margin-bottom: 12px; font-family: var(--serif); font-size: 22px; font-weight: 400; }
.download-card p { margin: 0 0 21px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.download-card a { display: flex; justify-content: space-between; padding-top: 13px; border-top: 1px solid var(--line); font-size: 12px; }
.article-end { margin-top: 80px; padding: 38px; background: var(--mist); border-radius: 24px; }
.article-end > span { color: var(--soft); font-size: 11px; }
.article-end h2 { margin: 17px 0 18px; }
.article-end p { color: var(--muted); }
.article-end a { min-height: 44px; display: inline-flex; align-items: center; gap: 24px; padding: 0 19px; color: var(--paper); background: var(--ink); border-radius: 99px; font-size: 13px; }
.article-end a i { font-style: normal; }

@media (max-width: 1050px) {
  .article-heading { grid-template-columns: 1fr; }
  .article-passport { display: grid; grid-template-columns: repeat(3,1fr); }
  .passport-row { grid-template-columns: 1fr; gap: 5px; }
  .article-layout { grid-template-columns: 170px minmax(0,1fr); }
  .article-aside { position: static; grid-column: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .download-card { margin-top: 0; }
}

@media (max-width: 740px) {
  .article-hero { padding: 55px 0 65px; }
  .breadcrumbs { margin-bottom: 42px; }
  .article-heading h1 { font-size: clamp(49px, 13vw, 70px); }
  .article-deck { font-size: 17px; }
  .article-passport { grid-template-columns: 1fr; }
  .passport-row { grid-template-columns: 85px 1fr; }
  .article-visual { height: 430px; min-height: 0; }
  .comparison-card { width: 68%; min-height: 230px; padding: 18px; }
  .comparison-card h2, .comparison-title { margin: 42px 0 55px; font-size: 30px; }
  .comparison-one { top: 15%; left: 0; }
  .comparison-two { right: 0; bottom: 8%; }
  .analysis-chip { font-size: 14px; }
  .article-layout { grid-template-columns: 1fr; padding-block: 70px 90px; }
  .article-toc { position: static; }
  .article-aside { grid-column: 1; grid-template-columns: 1fr; }
  .article-body > p:first-child { font-size: 22px; }
  .article-body p, .article-body li { font-size: 15px; }
  .article-body h2 { margin-top: 62px; }
  .check-row { grid-template-columns: 30px 1fr; }
  .check-row p { grid-column: 2; }
  .article-body blockquote { padding: 26px; font-size: 24px; }
  .prompt-box pre { font-size: 12px; }
  .article-end { padding: 28px 24px; }
}

/* Formula visual */
.formula-board { position: absolute; z-index: 2; top: 50%; left: 50%; width: min(660px, 84%); padding: 30px 36px; background: var(--paper); border-radius: 20px; box-shadow: var(--shadow); transform: translate(-50%,-50%) rotate(-1.5deg); }
.formula-board > span { color: var(--soft); font-size: 12px; }
.formula-line { display: grid; gap: 12px; margin: 34px 0 28px; font-family: var(--serif); font-size: clamp(24px, 3.1vw, 40px); letter-spacing: -.02em; line-height: 1.08; text-align: center; }
.formula-line i { display: block; height: 2px; background: var(--ink); }
.formula-board p { margin: 0; color: var(--muted); font-size: 11px; }
.formula-note { position: absolute; z-index: 4; right: 9%; bottom: 12%; padding: 14px 18px; color: var(--brown); background: var(--peach); border-radius: 14px; box-shadow: 0 10px 30px rgba(93,42,26,.09); font-family: var(--serif); font-size: 18px; transform: rotate(2deg); }
.formula-note b { margin-right: 5px; font-weight: 400; }
@media (max-width: 740px) {
  .formula-board { width: 92%; padding: 20px; }
  .formula-line { margin: 24px 0 20px; font-size: 22px; }
  .formula-note { right: 4%; bottom: 6%; font-size: 14px; }
}