/* ER Toolkit — long-form article styles (the "Learn" guides)
   Editorial, journal-like. Restraint over decoration. */

.article { padding: 2.6rem 0 1rem; }
.article-head { max-width: 760px; }
.article-head h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); margin: 1rem 0 .7rem; }
.byline { font-family: var(--font-mono); font-size: .76rem; color: var(--muted); letter-spacing: .03em; display: flex; gap: .9rem; flex-wrap: wrap; align-items: center; }
.byline .sep { color: var(--rule-2); }

.prose { max-width: 700px; margin: 2.6rem auto 0; }
.prose > * + * { margin-top: 1.2rem; }
.prose h2 { margin-top: 2.8rem; font-size: clamp(1.5rem, 2.6vw, 1.9rem); }
.prose h2 .n { font-family: var(--font-mono); font-size: .8rem; color: var(--spruce); vertical-align: middle; margin-right: .6rem; font-weight: 500; }
.prose h3 { margin-top: 2rem; font-size: 1.22rem; }
.prose p { font-size: 1.07rem; line-height: 1.78; color: var(--ink-2); }
.prose ul, .prose ol { padding-left: 1.25rem; color: var(--ink-2); font-size: 1.04rem; line-height: 1.7; }
.prose li + li { margin-top: .45rem; }
.prose .lead { font-family: var(--font-display); font-size: clamp(1.25rem, 2.4vw, 1.5rem); line-height: 1.5; color: var(--ink); font-weight: 400; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose a { color: var(--spruce-ink); }

/* footnote references + sup */
.fn { font-family: var(--font-mono); font-size: .62em; vertical-align: super; line-height: 0; color: var(--spruce); text-decoration: none; padding: 0 .1em; font-weight: 600; }
.fn:hover { text-decoration: underline; }

/* pull-stance: a confident aside */
blockquote { border-left: 3px solid var(--spruce); padding: .2rem 0 .2rem 1.3rem; margin: 1.9rem 0; font-family: var(--font-display); font-style: italic; font-size: clamp(1.2rem, 2.4vw, 1.45rem); line-height: 1.45; color: var(--ink); }
blockquote cite { display: block; font-style: normal; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .04em; color: var(--muted); margin-top: .7rem; }

/* the chart-snippet compare block — the anti-slop workhorse */
.compare { margin: 1.8rem 0; display: grid; gap: .9rem; }
.snippet { font-family: var(--font-mono); font-size: .85rem; line-height: 1.6; border-radius: var(--radius); padding: .95rem 1.1rem 1.05rem; position: relative; border: 1px solid var(--rule); }
.snippet .flag { display: inline-flex; align-items: center; gap: .4rem; font-size: .64rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; margin-bottom: .55rem; }
.snippet.weak { background: var(--red-tint); border-left: 3px solid var(--red); }
.snippet.weak .flag { color: var(--red); }
.snippet.strong { background: var(--spruce-tint); border-left: 3px solid var(--spruce); }
.snippet.strong .flag { color: var(--spruce-ink); }
.snippet .txt { color: var(--ink-2); }

/* boxed aside */
.aside-box { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius-lg); padding: 1.4rem 1.5rem; margin: 1.9rem 0; }
.aside-box h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .13em; text-transform: uppercase; color: var(--spruce); margin-bottom: .7rem; }
.aside-box p { margin: 0; font-size: 1rem; }
.aside-box.warn { border-color: var(--amber); border-left: 3px solid var(--amber); background: var(--amber-tint); }
.aside-box.warn h4 { color: var(--amber); }

/* references / footnotes section */
.refs { max-width: 700px; margin: 3.2rem auto 0; border-top: 1px solid var(--rule); padding-top: 1.6rem; }
.refs h4 { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .13em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.refs ol { padding-left: 1.4rem; }
.refs li { font-size: .88rem; line-height: 1.6; color: var(--muted); margin-bottom: .6rem; }
.refs li::marker { font-family: var(--font-mono); font-size: .8rem; color: var(--spruce); }

.next-nav { max-width: 700px; margin: 2.4rem auto 0; display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--rule); padding-top: 1.6rem; flex-wrap: wrap; }

/* compact 3-column callout (e.g. Problems / Data / Risk) */
.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 1.6rem 0; }
@media (max-width: 600px) { .three { grid-template-columns: 1fr; } }
.three .col { border-top: 2px solid var(--ink); padding-top: .7rem; }
.three .col[data-c="prob"] { border-color: var(--spruce); }
.three .col[data-c="data"] { border-color: var(--plum); }
.three .col[data-c="risk"] { border-color: var(--red); }
.three h4 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: .25rem; }
.three p { font-size: .9rem; color: var(--muted); }

/* drop-cap on the lead for a crafted, editorial open */
.prose .lead::first-letter { font-size: 3.1em; line-height: .8; float: left; padding: .06em .12em 0 0; font-weight: 500; color: var(--spruce-ink); }

/* ── Critical pathway (original, evidence-based algorithm per complaint) ───── */
.pathway { max-width: 700px; margin: 2.6rem auto 0; border: 1px solid var(--rule); border-radius: var(--radius-lg); padding: 1.5rem 1.6rem 1.7rem; background: var(--surface); }
.pathway > h2 { margin-top: 0; font-size: clamp(1.4rem, 2.4vw, 1.75rem); }
.pathway > h2 .n { font-family: var(--font-mono); color: var(--spruce); margin-right: .5rem; }
.pathway-sub { font-size: .96rem; color: var(--muted); margin: .5rem 0 1.4rem; }
.pathway-step { border-left: 3px solid var(--spruce); padding: .15rem 0 .15rem 1rem; margin: 1.1rem 0; }
.pathway-step.danger { border-color: var(--red); }
.pathway-tag { display: inline-block; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--spruce); font-weight: 600; margin-bottom: .5rem; }
.pathway-step.danger .pathway-tag, .pathway-tag.danger { color: var(--red); }
.pathway-step ul { padding-left: 1.15rem; margin: 0; font-size: 1rem; line-height: 1.65; color: var(--ink-2); }
.pathway-step li + li { margin-top: .4rem; }
.pathway-step p { margin: 0; font-size: 1rem; line-height: 1.65; color: var(--ink-2); }
.pathway-grid { display: grid; gap: .75rem; margin-top: .25rem; }
.pathway-dx { border: 1px solid var(--rule); border-left: 3px solid var(--red); border-radius: var(--radius); padding: .8rem .95rem; background: var(--red-tint); }
.pathway-dx h4 { font-family: var(--font-display); font-size: 1.06rem; color: var(--ink); margin: 0 0 .5rem; }
.pathway-dx dl { display: grid; grid-template-columns: max-content 1fr; gap: .25rem .8rem; margin: 0; }
.pathway-dx dt { font-family: var(--font-mono); font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; color: var(--red); padding-top: .15rem; }
.pathway-dx dd { margin: 0; font-size: .96rem; line-height: 1.55; color: var(--ink-2); }
@media (max-width: 520px) { .pathway-dx dl { grid-template-columns: 1fr; gap: .1rem .8rem; } .pathway-dx dt { padding-top: .5rem; } }