/* Course reader. Calm and narrow: one idea per block, plenty of air, no motion beyond focus scrolling. */
.course-wrap { max-width: 760px; }
.preview-tag { display: inline-block; font: 500 .9rem var(--f-head); color: var(--pen); background: var(--pen-soft); padding: 4px 12px; border-radius: 999px; margin: 0 0 14px; }
.ch-head h1 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.4rem); margin-bottom: .4em; }

.steps-strip { list-style: none; padding: 0; margin: 0 0 6px; display: flex; flex-wrap: wrap; gap: 8px; }
.sb { width: 2.4rem; height: 2.4rem; border-radius: 50%; display: grid; place-items: center; font: 800 .95rem var(--f-head); text-decoration: none; color: var(--ink-2); border: 2px solid var(--rule); background: var(--paper); font-variant-numeric: tabular-nums; }
.sb:hover { border-color: var(--pen); }
.sb.done { background: var(--pen); border-color: var(--pen); color: var(--on-pen); }
.sb.here { box-shadow: 0 0 0 3px var(--paper), 0 0 0 5px var(--pen); }
.sb.locked { opacity: .45; cursor: not-allowed; }
.sb.locked:hover { border-color: var(--rule); }

.notice.resume { margin-top: 14px; }
.intro-card { background: var(--sheet); border-radius: 16px; padding: 20px 22px; margin-top: 18px; }
.intro-card p { font-size: 1.15rem; }

.step { margin-top: 22px; }
.step-head { border-bottom: 2px solid var(--ink); padding-bottom: 10px; margin-bottom: 18px; }
.kicker { font: 500 .95rem var(--f-head); color: var(--pen); margin: 0 0 .4em; }
.step h2 { margin: 0; }
.step section, .final, .cards, .result { margin: 0 0 22px; }
.step h3 { font-size: 1.05rem; color: var(--muted); font-weight: 700; margin-bottom: .35em; }
.step p, .step li { max-width: 62ch; }

.recap { background: var(--sheet); border-inline-start: 4px solid var(--pen); border-radius: 10px; padding: 10px 14px; margin: 0 0 18px; font-size: 1rem; }
.terms { border: 2px dashed var(--rule); border-radius: 14px; padding: 14px 18px; }
.terms dl { margin: 0; display: grid; gap: 10px; }
.terms dt { font-weight: 600; color: var(--ink); }
.terms dd { margin: 0; color: var(--ink-2); }

.case p { font-size: 1.15rem; background: var(--sheet); border-radius: 12px; padding: 14px 18px; margin: 0; }
.rule p { font: 800 clamp(1.25rem, 1.05rem + .8vw, 1.5rem)/1.35 var(--f-head); color: var(--pen); margin: 0; }

.law .ref { font-weight: 500; color: var(--pen); margin-inline-start: .4em; }
.law blockquote { margin: 0 0 8px; padding: 12px 18px; border-inline-start: 4px solid var(--ink); background: var(--paper); font-size: 1.02rem; color: var(--ink-2); }
.law blockquote p { margin: 0 0 .35em; }
.plain ul { padding-inline-start: 1.2em; margin: 0; display: grid; gap: 8px; }
.law-more summary { cursor: pointer; color: var(--pen); font-weight: 600; margin: 4px 0 8px; }
.items-h { font: 700 1.02rem var(--f-head); margin: 16px 0 6px; }
.items { padding-inline-start: 1.4em; margin: 0; display: grid; gap: 6px; }
.memory { background: var(--pen-soft); border-radius: 10px; padding: 10px 14px; margin-top: 12px; }

.yesno { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.yesno > div { border-radius: 12px; padding: 12px 16px; border: 2px solid var(--rule); }
.yesno .yes { border-color: var(--ok); background: var(--ok-soft); }
.yesno .no { border-color: var(--bad); background: var(--bad-soft); }
.yesno .yes h3 { color: var(--ok); }
.yesno .no h3 { color: var(--bad); }
.yesno p { margin: 0; }
.trap { border-inline-start: 4px solid var(--bad); padding: 4px 16px; }
.trap h3 { color: var(--bad) !important; }

.check { border-top: 2px solid var(--ink); padding-top: 18px; }
.check h3#check-h { color: var(--ink); font-size: 1.2rem; }
.next-part { margin: 6px 0 30px; }
.card-mini, .card-list li { background: var(--sheet); border-radius: 14px; padding: 14px 18px; }
.card-mini .cq, .card-list .cq { font-weight: 600; margin-bottom: .4em; }
.card-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.card-mini summary, .card-list summary { cursor: pointer; color: var(--pen); font-weight: 600; }
.card-mini details p, .card-list details p { margin: .5em 0 0; }
.btn-row { margin: 12px 0; }

.result { border-radius: 16px; padding: 20px 22px; border: 2px solid var(--rule); margin-top: 18px; }
.result.ok { border-color: var(--ok); background: var(--ok-soft); }
.result.bad { border-color: var(--bad); background: var(--bad-soft); }
.result h2 { font-variant-numeric: tabular-nums; }
.final { margin-top: 18px; }

@media (max-width: 640px) {
  .yesno { grid-template-columns: 1fr; }
  .sb { width: 2.1rem; height: 2.1rem; font-size: .85rem; }
}

.chapters { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 10px; }
.chapter { border: 2px solid var(--rule); border-radius: 14px; padding: 12px 14px; background: var(--paper); }
.chapter:hover { border-color: var(--pen); }
.chapter a { display: grid; grid-template-columns: 2.6rem minmax(0, 1fr); gap: 12px; align-items: center; text-decoration: none; color: var(--ink); }
.ch-n { width: 2.4rem; height: 2.4rem; border-radius: 50%; border: 2px solid var(--rule); display: grid; place-items: center; font: 800 1rem var(--f-head); color: var(--ink-2); }
.chapter.started .ch-n { border-color: var(--pen); color: var(--pen); }
.chapter.passed .ch-n { background: var(--pen); border-color: var(--pen); color: var(--on-pen); }
.ch-t { display: grid; gap: 2px; }
.ch-t b { font-family: var(--f-head); font-size: 1.08rem; }
.chapter .meter { margin-top: 10px; display: block; }
.ch-head .kicker a { color: var(--pen); }
.chapter.is-locked { border-style: dashed; }
.chapter.is-locked .ch-n { border-style: dashed; }
.locked .btn-row { margin: 16px 0 8px; }

/* glossary (#<chapter>/terms) */
.glossary { margin: 16px 0 0; max-width: 46rem; }
.glossary > div { border-bottom: 1px solid var(--rule); padding: 10px 0; }
.glossary dt { font-weight: 700; }
.glossary dd { margin: 4px 0 0; }
#terms-q { width: 100%; max-width: 24rem; font: inherit; padding: 8px 10px; border: 1px solid var(--rule); border-radius: var(--radius-s); background: var(--paper); color: var(--ink); }