/* 文章页：正文、下载区、支付弹层（依赖 app.css 中的设计令牌） */

/* 宽屏：正文 + 右侧推荐；窄屏：推荐在下载区下方（单列文档流） */
.article-layout {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

@media (min-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
    gap: 1.5rem;
  }

  .article-layout__aside {
    position: sticky;
    top: calc(0.85rem + 52px + env(safe-area-inset-top, 0px));
    max-height: calc(100vh - 5.5rem);
    overflow: auto;
    overscroll-behavior: contain;
    padding-bottom: 0.25rem;
  }
}

.article-layout--portal {
  max-width: 1200px;
}

.article-layout .internal-link-hub {
  grid-column: 1 / -1;
  margin-top: 0.75rem;
}

.article-body--portal.card {
  box-shadow: var(--shadow-sm);
}

.breadcrumb--portal {
  gap: 2px 4px;
  margin-bottom: 1rem;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.breadcrumb__label {
  color: var(--muted-foreground);
  margin-right: 4px;
}

.breadcrumb__sep {
  color: var(--muted-foreground);
  user-select: none;
}

.breadcrumb--portal a {
  padding: 0 2px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  text-decoration: none;
  color: var(--link);
  font-weight: 500;
}

.breadcrumb--portal a:hover {
  text-decoration: underline;
  color: var(--primary);
  background: transparent;
  border: none;
}

.article-header-portal .meta-line--portal {
  text-transform: none;
  letter-spacing: 0.01em;
  font-weight: 500;
  font-size: 0.875rem;
  line-height: 1.55;
}

.meta-line__dot {
  opacity: 0.65;
}

.meta-line__sort a {
  color: var(--link);
  text-decoration: none;
  font-weight: 600;
}

.meta-line__sort a:hover {
  text-decoration: underline;
}

.article-editor-line {
  margin: 1.25rem 0 0.35rem;
  font-size: 0.8125rem;
  color: var(--muted-foreground);
}

.article-disclaimer {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

.article-adjacent {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid color-mix(in srgb, var(--border) 88%, transparent);
}

.article-adjacent__label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--muted-foreground);
  margin-right: 6px;
}

.article-adjacent__item a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--link);
  text-decoration: none;
}

.article-adjacent__item a:hover {
  text-decoration: underline;
  color: var(--primary);
}

.article-adjacent__item--next {
  text-align: left;
}

.article-side-block {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.7rem 0.85rem 0.85rem;
  background: var(--card);
}

.article-side-block:last-child {
  margin-bottom: 0;
}

.article-side-block__h {
  margin: 0 0 0.5rem;
  padding-bottom: 0.4rem;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--foreground);
  border-bottom: 2px solid color-mix(in srgb, var(--primary) 48%, transparent);
}

.article-side-block__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-side-block__list li {
  margin: 0;
  padding: 0.28rem 0;
  border-bottom: 1px dashed color-mix(in srgb, var(--border) 75%, transparent);
}

.article-side-block__list li:last-child {
  border-bottom: none;
}

.article-side-block__list a {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--foreground);
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-side-block__list a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.article-body {
  min-width: 0;
  max-width: none;
  margin: 0;
}

.article-body.card {
  padding: clamp(22px, 4vw, 40px) clamp(20px, 3.5vw, 44px) clamp(28px, 5vw, 48px);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.article-body.card:hover {
  transform: none;
}

.article-body header h1 {
  margin-top: 6px;
  font-size: clamp(1.55rem, 3.2vw, 2.05rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  text-wrap: balance;
}

.article-body header .meta-line {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--muted-foreground);
  opacity: 0.92;
}

.breadcrumb {
  font-size: 13px;
  color: var(--muted-foreground);
  margin-bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb a {
  color: var(--muted-foreground);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--secondary) 70%, transparent);
  border: 1px solid transparent;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: color-mix(in srgb, var(--primary) 20%, transparent);
  text-decoration: none;
}

.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--card) 40%, var(--secondary)),
    var(--secondary)
  );
  border: 1px solid color-mix(in srgb, var(--border) 90%, var(--primary));
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--foreground);
  box-shadow: 0 1px 2px color-mix(in srgb, var(--foreground) 6%, transparent);
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.tag-pill:hover {
  background: var(--primary-soft);
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
  color: var(--primary);
  box-shadow: var(--shadow-xs);
  transform: translateY(-1px);
}

.article-prose {
  margin-top: 28px;
  font-size: 1.04rem;
  line-height: var(--leading-relaxed);
  color: color-mix(in srgb, var(--foreground) 94%, var(--muted));
  overflow-wrap: break-word;
}

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

.article-prose h1,
.article-prose h2,
.article-prose h3,
.article-prose h4 {
  margin: 1.4em 0 0.6em;
  scroll-margin-top: 72px;
}

.article-prose h1 { font-size: 1.65rem; }
.article-prose h2 { font-size: 1.4rem; }
.article-prose h3 { font-size: 1.2rem; }

.article-prose p {
  margin: 0 0 1em;
}

.article-prose a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--link) 45%, transparent);
  text-underline-offset: 3px;
  font-weight: 500;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.article-prose a:hover {
  color: var(--primary);
  text-decoration-thickness: 2px;
  text-decoration-color: color-mix(in srgb, var(--primary) 55%, transparent);
}

.article-prose ul,
.article-prose ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
}

.article-prose li {
  margin: 0.35em 0;
}

.article-prose blockquote {
  margin: 1.35em 0;
  padding: 16px 20px 16px 22px;
  border-left: 4px solid var(--primary);
  background: linear-gradient(
    90deg,
    var(--primary-soft),
    color-mix(in srgb, var(--secondary) 88%, var(--card))
  );
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  color: var(--muted-foreground);
  font-style: normal;
  box-shadow: var(--shadow-xs);
}

.article-prose pre {
  margin: 1em 0;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--secondary);
  border: 1px solid var(--border);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88em;
  line-height: 1.5;
}

.article-prose code {
  padding: 0.12em 0.35em;
  font-size: 0.9em;
}

.article-prose pre code {
  padding: 0;
  border: 0;
  background: none;
  font-size: inherit;
}

.article-prose img {
  border-radius: var(--radius-md);
  margin: 1em 0;
}

.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.95em;
}

.article-prose th,
.article-prose td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
}

.article-prose th {
  background: var(--secondary);
  font-weight: 600;
}

.article-prose hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

.download-box {
  margin-top: 28px;
  padding: 18px 20px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--secondary) 65%, var(--card));
}

.download-box strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.02rem;
}

/* 同分类随机推荐（与 /sort 列表范围一致：本节点 + 一层子类） */
.article-related {
  margin-top: 0;
  padding: 1.15rem 1.2rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--border) 88%, var(--foreground));
  background: color-mix(in srgb, var(--secondary) 42%, var(--card));
  box-shadow: var(--shadow-xs);
}

.article-layout__aside .article-related__list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

@media (min-width: 640px) and (max-width: 1023px) {
  .article-layout__aside .article-related__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem 0.85rem;
  }
}

.article-related__head {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.75rem;
}

.article-related__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--foreground);
}

.article-related__more {
  flex-shrink: 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--link);
  text-decoration: none;
  cursor: pointer;
}

.article-related__more:hover {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-related__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.article-related__list li {
  margin: 0;
  min-width: 0;
}

.article-related__link {
  display: block;
  padding: 0.45rem 0.55rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--foreground);
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.article-related__link:hover {
  background: var(--card);
  border-color: color-mix(in srgb, var(--border) 70%, var(--primary));
  color: var(--primary);
}

/* 文章下载与支付（付费资源） */
.download-section {
  margin-top: 36px;
  padding: 24px 24px 26px;
  border-radius: var(--radius-xl);
  position: relative;
  border: 1px solid color-mix(in srgb, var(--border) 82%, var(--primary));
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--card) 88%, var(--primary-soft)) 0%,
      color-mix(in srgb, var(--secondary) 45%, var(--card)) 100%
    );
  box-shadow:
    var(--shadow-md),
    0 0 0 1px color-mix(in srgb, var(--card) 70%, transparent) inset;
  overflow: hidden;
}

.download-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--cta));
  opacity: 0.92;
  pointer-events: none;
}

.download-section__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.download-section__icon {
  flex-shrink: 0;
  color: var(--primary-foreground);
  background: linear-gradient(145deg, var(--primary), color-mix(in srgb, var(--primary) 70%, #1e40af));
  padding: 10px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--primary) 28%, transparent);
}

@media (prefers-color-scheme: dark) {
  .download-section__icon {
    background: linear-gradient(145deg, var(--primary), color-mix(in srgb, var(--primary) 55%, #1e3a8a));
  }
}

.download-section__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.download-section__hint {
  margin: 0 0 14px;
  font-size: 14px;
}

.download-section__hint code {
  font-size: 0.9em;
}

.download-section__price-row {
  margin: 0 0 10px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.download-old-price {
  text-decoration: line-through;
  color: var(--muted-foreground);
  font-size: 0.95rem;
}

.download-price {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--cta);
}

.download-section__tip {
  margin: 0 0 16px;
  max-width: 42em;
}

.download-cta {
  background: linear-gradient(
    165deg,
    color-mix(in srgb, var(--cta) 92%, #fff),
    var(--cta),
    color-mix(in srgb, var(--cta) 85%, #9a3412)
  );
  color: var(--cta-foreground);
  cursor: pointer;
  border: 1px solid color-mix(in srgb, var(--cta) 40%, transparent);
  font-weight: 700;
  box-shadow:
    0 1px 0 color-mix(in srgb, #fff 25%, transparent) inset,
    0 6px 20px color-mix(in srgb, var(--cta) 22%, transparent);
  transition: filter var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.download-cta:hover {
  filter: brightness(1.05);
  box-shadow:
    0 1px 0 color-mix(in srgb, #fff 30%, transparent) inset,
    0 10px 28px color-mix(in srgb, var(--cta) 30%, transparent);
}

.download-cta:active {
  transform: scale(0.99);
}

.download-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.download-links__btn {
  width: 100%;
  max-width: 420px;
  justify-content: center;
  cursor: pointer;
}

.pay-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.pay-modal.is-open {
  display: flex;
}

.pay-modal__backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, #0f172a 58%, transparent);
  backdrop-filter: blur(10px) saturate(1.05);
  -webkit-backdrop-filter: blur(10px) saturate(1.05);
  cursor: pointer;
}

.pay-modal__panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  padding: 32px 28px;
  background: color-mix(in srgb, var(--card) 97%, var(--background));
  color: var(--card-foreground);
  border: 1px solid color-mix(in srgb, var(--border) 80%, var(--primary));
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg), 0 0 0 1px color-mix(in srgb, var(--card) 55%, transparent) inset;
  animation: pay-modal-in 0.28s cubic-bezier(0.34, 1.2, 0.64, 1) both;
}

@keyframes pay-modal-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pay-modal__panel {
    animation: none;
  }
}

.pay-modal__panel h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}

.pay-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--muted-foreground);
  border-radius: var(--radius-md);
}

.pay-modal__close:hover {
  background: var(--accent);
  color: var(--foreground);
}

.pay-modal__amount {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.pay-modal__note {
  margin: 0 0 20px;
  font-size: 13px;
}

.pay-modal__submit {
  width: 100%;
  cursor: pointer;
  font-weight: 700;
  margin-top: 4px;
}

/* Chronicle 正文：多图场景配合服务端 loading=lazy；限制宽度减轻布局与解码成本 */
.article-chronicle-body img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

/* 含图段落：减少视口外排版/绘制对主线程的占用（多图文有用） */
.article-chronicle-body p:has(img),
.article-chronicle-body figure:has(img) {
  content-visibility: auto;
  contain-intrinsic-size: 280px 180px;
}