.page-news {
  --news-radius: var(--radius-md);
  --news-lead: var(--rock);
}

.page-news .breadcrumb {
  padding-top: 22px;
}

.page-news .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--rock);
}

.page-news .breadcrumb__list a {
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-news .breadcrumb__list a:hover,
.page-news .breadcrumb__list a:focus-visible {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
}

.page-news .breadcrumb__list [aria-current="page"] {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */

.news-hero {
  position: relative;
  isolation: isolate;
  margin-top: 18px;
  padding: 32px 0 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.news-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: 64%;
  background: linear-gradient(165deg, var(--accent-tint), transparent 72%);
  -webkit-clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  z-index: -1;
  pointer-events: none;
}

.news-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent-deep);
}

.news-hero__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.news-hero__lede {
  max-width: 34em;
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--news-lead);
}

.news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

.news-hero__meta li {
  position: relative;
  padding-left: 16px;
}

.news-hero__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

/* ---------- 本期头条 ---------- */

.news-feature {
  display: grid;
  gap: 18px;
  margin-top: 44px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.news-feature__media {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--frost);
}

.news-feature__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.news-feature__kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent-deep);
}

.news-feature__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.35rem, 4.6vw, 1.9rem);
  line-height: 1.38;
  color: var(--ink);
}

.news-feature__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--rock);
}

.news-feature__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- 章节头 ---------- */

.news-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.news-head__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.3rem, 4.4vw, 1.7rem);
  line-height: 1.4;
  color: var(--ink);
}

.news-head__note {
  margin: 0;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--rock);
}

/* ---------- 筛选 ---------- */

.news-filter {
  margin-top: 56px;
}

.news-filter__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.news-filter__label {
  min-width: 42px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--rock);
}

.news-filter__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  padding: 7px 16px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.4;
  color: var(--rock);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.filter-chip:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.filter-chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.filter-chip.is-current {
  color: #ffffff;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

/* ---------- 文章列表 ---------- */

.news-list {
  margin-top: 56px;
  scroll-margin-top: 96px;
}

.news-list__items {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.news-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 4px 14px;
  padding: 20px 10px 20px 14px;
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.news-item:hover,
.news-item:focus-within {
  border-left-color: var(--accent);
  background-color: var(--accent-tint);
}

.news-item__num {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
}

.news-item__main {
  min-width: 0;
}

.news-item__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.52;
  color: var(--ink);
}

.news-item__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--rock);
}

.news-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0 0;
}

.news-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.06em;
  color: var(--rock);
  background: var(--frost);
  border-radius: var(--radius-pill);
}

.news-tag--season {
  color: var(--accent-deep);
  background: var(--accent-tint);
}

.news-item__time {
  grid-column: 2;
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--accent-deep);
}

.news-item__thumb {
  grid-column: 1 / -1;
  margin-top: 14px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--frost);
}

.news-item__thumb img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 专题长卷 ---------- */

.news-series {
  margin-top: 56px;
  scroll-margin-top: 96px;
}

.news-series__track {
  display: flex;
  gap: 14px;
  padding: 2px 2px 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.news-series__track:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.series-card {
  display: flex;
  flex-direction: column;
  flex: 0 0 84%;
  scroll-snap-align: start;
  padding: 22px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--series-color, var(--accent));
  border-radius: var(--news-radius);
  background: var(--surface);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.series-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.series-card--spring { --series-color: var(--moss); }
.series-card--summer { --series-color: var(--lake); }
.series-card--index { --series-color: var(--wheat); }
.series-card--winter { --series-color: var(--indigo); }

.series-card--media {
  padding: 0;
  overflow: hidden;
}

.series-card--media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.series-card__inner {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: 18px 20px 22px;
}

.series-card__vol {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--series-color, var(--accent-deep));
}

.series-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.48;
  color: var(--ink);
}

.series-card__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--rock);
}

.series-card__link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.series-card__link:hover,
.series-card__link:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 更新日志 ---------- */

.news-log {
  margin-top: 56px;
}

.news-log__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.log-item {
  border-bottom: 1px solid var(--line-soft);
}

.log-item__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
}

.log-item__summary::-webkit-details-marker {
  display: none;
}

.log-item__summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.log-item__stage {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent-deep);
}

.log-item__title {
  flex: 1 1 220px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
}

.log-item__chev {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-left: auto;
}

.log-item__chev::before,
.log-item__chev::after {
  content: "";
  position: absolute;
  background: var(--accent);
  border-radius: 1px;
}

.log-item__chev::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.log-item__chev::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.log-item[open] .log-item__chev::after {
  transform: rotate(90deg);
  opacity: 0;
}

.log-item__body {
  max-width: 46em;
  padding: 0 4px 20px;
  font-size: 14px;
  line-height: 1.82;
  color: var(--rock);
  animation: news-fade 0.24s ease;
}

.log-item__body p {
  margin: 0;
}

@keyframes news-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 继续阅读 ---------- */

.news-next {
  margin-top: 64px;
  padding-top: 8px;
}

.news-next__grid {
  display: grid;
  gap: 14px;
}

.next-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.18s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.next-card:hover,
.next-card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.next-card__kicker {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent-deep);
}

.next-card__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
}

.next-card__text {
  font-size: 13px;
  line-height: 1.72;
  color: var(--rock);
}

.next-card__go {
  margin-top: auto;
  padding-top: 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent-deep);
}

.news-top {
  display: flex;
  justify-content: flex-end;
  margin: 34px 0 0;
}

.news-top a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rock);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.news-top a:hover,
.news-top a:focus-visible {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
}

/* ---------- 平板与桌面 ---------- */

@media (min-width: 720px) {
  .news-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .series-card {
    flex: 0 0 340px;
  }

  .news-series__track {
    gap: 18px;
  }
}

@media (min-width: 860px) {
  .news-hero {
    padding: 46px 0 44px;
  }

  .news-hero__lede {
    font-size: 17px;
  }

  .news-feature {
    grid-template-columns: 1.1fr 1fr;
    align-items: center;
    gap: 32px;
    padding: 26px;
    margin-top: 52px;
  }

  .news-feature__media img {
    aspect-ratio: 4 / 3;
  }

  .news-head {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 24px;
  }

  .news-head__note {
    max-width: 30em;
    text-align: right;
  }

  .news-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .news-item {
    grid-template-columns: 48px minmax(0, 1fr) auto;
    align-items: start;
    gap: 4px 24px;
    padding: 22px 18px 22px 20px;
  }

  .news-item__time {
    grid-column: 3;
    margin-top: 3px;
    white-space: nowrap;
  }

  .news-item__title {
    font-size: 18px;
  }

  .news-item--media {
    grid-template-columns: 48px minmax(0, 1fr) 200px auto;
    align-items: center;
  }

  .news-item--media .news-item__time {
    grid-column: 4;
  }

  .news-item--media .news-item__thumb {
    grid-column: auto;
    margin-top: 0;
  }
}

@media (min-width: 1120px) {
  .series-card {
    flex: 0 0 372px;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-news .series-card,
  .page-news .next-card,
  .page-news .filter-chip,
  .page-news .news-item,
  .page-news .log-item__chev::after,
  .page-news .series-card__link,
  .page-news .news-top a {
    transition: none;
  }

  .page-news .series-card:hover,
  .page-news .next-card:hover,
  .page-news .next-card:focus-visible {
    transform: none;
  }

  .page-news .log-item__body {
    animation: none;
  }
}