/* LegalTech CC — Prototype: Course detail page (教程详情页 v2)
 * Lives in /prototype/. Not shipped.
 * v2 — stable content IDs, canonical hash anchors, compact article path
 */

.article-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 14px 0 2px;
  color: var(--muted);
  font-size: 12px;
}

.article-path .article-back {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--teal);
  font-weight: 700;
  text-decoration: none;
}

.article-path .article-back:hover {
  border-color: var(--jade);
  color: var(--ink);
}

.article-path .article-id {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--mint);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.article-path .article-current {
  color: var(--muted);
}

.heading-anchor {
  color: inherit;
  text-decoration: none;
}

.heading-anchor::after {
  content: "#";
  margin-left: 0.35em;
  color: var(--jade);
  font-family: var(--sans);
  font-size: 0.62em;
  font-weight: 700;
  opacity: 0;
  transition: opacity 140ms ease;
}

.heading-anchor:hover,
.heading-anchor:focus-visible {
  color: inherit;
}

.heading-anchor:hover::after,
.heading-anchor:focus-visible::after,
h2:target > .heading-anchor::after,
h3:target > .heading-anchor::after {
  opacity: 1;
}

h2[id],
h3[id] {
  scroll-margin-top: 88px;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 12px 0 4px;
  color: var(--muted);
  font-size: 12.5px;
}

.crumbs a {
  color: var(--muted);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--ink);
}

.crumbs span:not(.current) {
  color: var(--line);
}

.crumbs .current {
  color: var(--ink);
  font-weight: 600;
}

.course-page {
  padding: 16px 0 48px;
}

/* HERO */
.course-hero {
  padding: 24px 0 28px;
  border-bottom: 1px solid var(--line);
}

.course-hero h1 {
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 10px 0 14px;
  font-weight: 900;
}

.course-hero .lede {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(15.5px, 1.3vw, 18px);
  line-height: 1.65;
  margin: 0 0 22px;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 13.5px;
}

.course-meta strong {
  display: block;
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.course-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* AT-A-GLANCE */
.glance {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 24px 0 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.glance-block {
  padding: 20px 22px;
  border-left: 1px solid var(--line);
}

.glance-block:first-child {
  border-left: 0;
}

.glance-block h3 {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 800;
  color: var(--teal);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.glance-block p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.6;
}

/* COURSE LAYOUT */
.course-page {
  display: block;
}

.course-toc {
  display: block;
  margin: 24px 0 6px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.course-toc strong {
  display: block;
  margin-bottom: 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.course-toc nav {
  display: grid;
  gap: 4px;
}

.course-toc a {
  padding: 5px 8px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 13.5px;
  text-decoration: none;
}

.course-toc a:hover {
  background: var(--paper-2);
  color: var(--ink);
}

.course-body {
  margin-top: 18px;
}

.course-body section {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.course-body section:first-child {
  border-top: 0;
  padding-top: 0;
}

.course-body h2 {
  font-size: clamp(22px, 3vw, 32px);
  margin: 0 0 14px;
  letter-spacing: -0.03em;
}

.course-body h3 {
  font-size: 18px;
  margin: 18px 0 8px;
}

.course-body p {
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.7;
  margin: 0 0 12px;
}

.course-body ol,
.course-body ul {
  padding-left: 22px;
  color: var(--ink-2);
  line-height: 1.7;
  font-size: 15px;
}

.course-body li + li {
  margin-top: 4px;
}

.course-body li::marker {
  color: var(--teal);
}

.course-body code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--paper-2);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 13px;
}

.course-body .code-wrap {
  position: relative;
  margin: 14px 0 18px;
}

.course-body .code-wrap pre {
  margin: 0;
}

.course-body pre {
  margin: 14px 0 18px;
  padding: 14px 18px;
  border-radius: var(--radius);
  background: var(--paper-2);
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  overflow-x: auto;
}

.course-body pre code {
  padding: 0;
  background: transparent;
}

/* 脚注 */
.course-body sup.fnref {
  margin-left: 2px;
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 700;
  vertical-align: super;
  line-height: 0;
}

.course-body sup.fnref a {
  display: inline-block;
  min-width: 18px;
  padding: 0 4px;
  border-radius: 4px;
  background: rgba(37, 196, 155, .14);
  text-decoration: none;
  color: var(--teal);
}

.course-body sup.fnref a:hover {
  background: var(--jade);
  color: #fff;
}

.course-body ol.footnotes {
  margin: 24px 0 0;
  padding: 12px 18px 12px 36px;
  border-top: 1px solid var(--line);
  background: var(--paper);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-2);
}

.course-body ol.footnotes li {
  margin-bottom: 4px;
}

.course-body ol.footnotes li::marker {
  color: var(--teal);
  font-weight: 700;
}

.course-body ol.footnotes li:target {
  background: rgba(37, 196, 155, .12);
  border-radius: 4px;
  margin-left: -8px;
  padding-left: 8px;
}

.callout,
.callout-warn {
  margin: 16px 0;
  padding: 12px 16px;
  border-radius: var(--radius);
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.6;
}

.callout {
  border-left: 3px solid var(--jade);
  background: rgba(37, 196, 155, .08);
}

.callout strong {
  color: var(--teal);
  display: block;
  margin-bottom: 2px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.callout-warn {
  background: rgba(201, 130, 11, .08);
  border-left: 3px solid var(--warning);
}

.checklist {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.checklist th,
.checklist td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.checklist th {
  background: var(--paper-2);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.checklist tr:last-child td {
  border-bottom: 0;
}

.download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  margin: 14px 0;
}

.download-card strong {
  display: block;
  margin-bottom: 2px;
  font-size: 15px;
}

.download-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.community {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* RELATED */
.related {
  padding: 32px 0 0;
  border-top: 1px solid var(--line);
  margin-top: 28px;
}

.related h2 {
  font-size: var(--t-h2);
  margin: 0 0 18px;
}

.rel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.rel-card {
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}

.rel-card:hover {
  border-color: var(--jade);
  transform: translateY(-2px);
  color: var(--ink);
}

.rel-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--teal);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.rel-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.rel-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.55;
}

/* Responsive */
@media (max-width: 980px) {
  .glance {
    grid-template-columns: 1fr;
  }
  .glance-block {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .glance-block:first-child {
    border-top: 0;
  }
  .rel-grid {
    grid-template-columns: 1fr;
  }
}