/* 文章详情：全宽封面与 1:2 阅读网格。 */
.detail-main {
  padding: 0;
  width: 100%;
  max-width: none;
}

.article-page {
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.article-banner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  margin: 0;
  background: var(--color-banner);
}

.banner-image {
  min-width: 0;
}

.banner-image img {
  width: 100%;
  height: 100%;
  min-height: 470px;
  max-height: 680px;
  object-fit: cover;
  display: block;
}

.banner-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(30px, 5vw, 85px);
}

.banner-copy>.eyebrow {
  font-size: 11px;
  text-decoration: none;
  margin-bottom: 28px;
}

.banner-copy h1 {
  font-size: clamp(28px, 3.3vw, 54px);
  line-height: 1.35;
  letter-spacing: -.03em;
}

.banner-description {
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-muted);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 26px;
}

.article-tag {
  border: 1px solid var(--color-border);
  border-radius: 30px;
  padding: 4px 13px;
  font-size: 12px;
  color: var(--color-primary);
}

.banner-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  border-top: 1px solid var(--color-border);
  padding-top: 22px;
  width: 100%;
  font-size: 12px;
  color: var(--color-muted);
}

.article-author {
  color: var(--color-text);
  font-weight: 600;
}

.reading-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(28px, 5vw, 80px);
  padding-top: 64px;
  align-items: start;
}

.article-sidebar {
  position: sticky;
  top: 128px;
  min-width: 0;
}

.toc-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  padding: 25px;
  box-shadow: 0 8px 30px var(--color-shadow);
  margin: 0;
}

.toc-panel>summary {
  color: var(--color-text);
  line-height: 1.5;
}

.toc-title {
  font-weight: 700;
  font-size: 19px;
}

.toc-hint {
  display: block;
  font-size: 11px;
  color: var(--color-muted);
  margin-top: 4px;
}

.toc-panel[open]>summary {
  margin-bottom: 20px;
}

.toc-body nav {
  display: block;
  width: 100%;
  min-width: 0;
  max-height: calc(100dvh - 340px);
  overflow-x: hidden;
  overflow-y: auto;
}

.toc-body ol {
  display: block;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  margin: 0;
  padding: 0 0 0 16px;
  position: relative;
  border-left: 0;
}

.toc-body li {
  display: block;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  list-style: none;
  padding: 0;
  margin: 0 0 7px;
}

.toc-body a {
  display: block;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  margin: 0;
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
}

.toc-label {
  display: block;
  overflow: hidden;
  white-space: nowrap;
  -webkit-mask-image: linear-gradient(to right, #000 0%, #000 78%, transparent 100%);
  mask-image: linear-gradient(to right, #000 0%, #000 78%, transparent 100%);
}

.toc-body a[aria-current="location"] {
  color: var(--color-primary);
  background: var(--color-active);
  box-shadow: none;
  font-weight: 600;
}

.article-main-column {
  min-width: 0;
}

.article-prose {
  font-size: 17px;
  line-height: 2.05;
  overflow-wrap: anywhere;
}

.article-prose h2 {
  font-size: 27px;
  line-height: 1.5;
  margin: 42px 0 20px;
  scroll-margin-top: 16px;
}

.article-prose h3 {
  font-size: 21px;
  margin-top: 30px;
}

.article-prose> :first-child {
  margin-top: 0;
}

.article-prose p {
  white-space: normal;
  margin-bottom: 26px;
}

.article-references,
.article-faq {
  padding-top: 32px;
  margin-top: 40px;
  border-top: 1px solid var(--color-border);
}

.article-references h2,
.article-faq h2 {
  font-size: 25px;
}

.article-references li {
  font-size: 15px;
  overflow-wrap: anywhere;
}

.article-faq details {
  padding: 18px 20px;
  background: var(--color-soft);
  border-radius: 12px;
}

.article-faq summary {
  font-weight: 600;
  line-height: 1.7;
}

.article-faq details p {
  font-size: 15px;
  line-height: 1.9;
  padding-top: 16px;
  margin-bottom: 0;
}

.related-reading {
  border-top: 1px solid var(--color-border);
  margin-top: 70px;
  padding-top: 48px;
}

.related-reading h2 {
  font-size: 27px;
}

.related-reading .section-heading>a {
  font-size: 13px;
  flex-shrink: 0;
}

@media (max-width: 899px) {
  .article-banner {
    grid-template-columns: 1fr;
  }

  .banner-image img {
    aspect-ratio: 16 / 10;
    min-height: 0;
    max-height: 500px;
  }

  .banner-copy {
    padding: 32px 24px;
  }

  .reading-layout {
    grid-template-columns: 1fr;
    padding-top: 30px;
    gap: 30px;
  }

  .article-sidebar {
    position: static;
  }

  .toc-body nav {
    max-height: 45vh;
  }

  .toc-panel {
    padding: 20px;
  }

  .article-prose h2 {
    scroll-margin-top: 16px;
  }

  .related-reading .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* 目录轨道独立于条目，连续显示正文阅读进度。 */
.toc-body ol::before,
.toc-body ol::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  border-radius: 3px;
  pointer-events: none;
}

.toc-body ol::before {
  height: 100%;
  background: var(--color-border);
}

.toc-body ol::after {
  height: var(--reading-progress, 0%);
  background: var(--color-progress);
}

.toc-panel>summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toc-panel>summary::after {
  float: none;
  flex-shrink: 0;
}

@media (min-width: 900px) {
  .toc-panel>summary {
    pointer-events: none;
  }

  .toc-panel>summary::after {
    display: none;
  }
}