.page-news {
  --news-clay-ink: #df8a6c;
  --news-hair: rgba(140, 147, 166, .3);
  color: var(--paper);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 22px 0 4px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .06em;
  color: var(--mist);
}
.page-news .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--barley);
  border-bottom-color: var(--turquoise);
}
.page-news .breadcrumb [aria-current="page"] {
  color: var(--barley);
}

/* 首屏拼贴 */
.page-news .news-hero {
  padding-top: clamp(20px, 4vw, 44px);
}
.page-news .news-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 40px);
  align-items: end;
}
.page-news .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .14em;
  color: var(--crimson);
}
.page-news .news-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--t-44);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-news .news-hero__intro {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: var(--t-18);
  line-height: 1.9;
  color: var(--paper);
}
.page-news .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .08em;
  color: var(--mist);
}
.page-news .hero-meta span {
  position: relative;
  padding-left: 12px;
}
.page-news .hero-meta span::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 5px;
  height: 5px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-news .news-hero__media {
  position: relative;
  margin: 0;
  padding: 10px;
  background: var(--ink);
  border: var(--line-gold);
  box-shadow: 10px 10px 0 rgba(9, 15, 34, .55);
}
.page-news .news-hero__media::after {
  content: "";
  position: absolute;
  top: -6px;
  left: 22px;
  width: 72px;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--crimson) 0 12px,
    var(--gold) 12px 24px,
    var(--turquoise) 24px 36px,
    var(--paper) 36px 48px
  );
  opacity: .9;
}
.page-news .news-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 三条摘要 */
.page-news .brief-list {
  list-style: none;
  margin: clamp(30px, 4.5vw, 52px) 0 0;
  padding: 0;
  border-top: 1px solid rgba(227, 178, 60, .32);
}
.page-news .brief-list__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--news-hair);
}
.page-news .brief-list__num {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .1em;
  color: var(--crimson);
  padding-top: 5px;
}
.page-news .brief-list__text {
  margin: 0;
  font-size: var(--t-16);
  line-height: 1.85;
  color: var(--paper);
}
.page-news .brief-list__text strong {
  font-weight: 700;
  color: var(--barley);
}

/* 章节通用 */
.page-news .news-sec {
  margin-top: clamp(44px, 7vw, 88px);
}
.page-news .news-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 14px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(227, 178, 60, .32);
}
.page-news .news-sec__index {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .12em;
  color: var(--crimson);
}
.page-news .news-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--t-28);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--paper);
}
.page-news .news-sec__lead {
  margin: 14px 0 0;
  max-width: 46em;
  font-size: var(--t-16);
  line-height: 1.85;
  color: var(--mist);
}

/* 主列表 + 侧栏索引 */
.page-news .news-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
}
.page-news .news-body__main {
  min-width: 0;
}

/* 时间轴 */
.page-news .timeline {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  position: relative;
}
.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(
    180deg,
    rgba(217, 58, 43, .85) 0%,
    rgba(227, 178, 60, .65) 40%,
    rgba(23, 163, 152, .55) 76%,
    rgba(140, 147, 166, .2) 100%
  );
}
.page-news .tl-item {
  position: relative;
  padding-left: 34px;
  margin-bottom: clamp(20px, 3vw, 34px);
}
.page-news .tl-item:last-child {
  margin-bottom: 0;
}
.page-news .tl-item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 18px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--crimson);
  box-shadow: 0 0 0 3px var(--ink-deep), 0 0 0 4px rgba(227, 178, 60, .45);
}
.page-news .tl-item:nth-child(even)::before {
  background: var(--turquoise);
}

/* 案例卡 */
.page-news .news-card {
  background: linear-gradient(180deg, rgba(27, 42, 85, .94), rgba(21, 34, 70, .94));
  border: 1px solid rgba(140, 147, 166, .26);
  box-shadow: 6px 6px 0 rgba(9, 15, 34, .5);
  padding: clamp(16px, 2.4vw, 24px);
  transition: transform .16s var(--ease), border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.page-news .news-card:hover,
.page-news .news-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(227, 178, 60, .6);
  box-shadow: 6px 10px 0 rgba(9, 15, 34, .5);
}
.page-news .news-card__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 12px;
}
.page-news .news-card__when {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .06em;
  color: var(--mist);
}
.page-news .series-tag {
  display: inline-block;
  padding: 1px 9px;
  border: 1px solid currentColor;
  border-radius: 2px;
  background: rgba(16, 27, 59, .55);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  line-height: 1.7;
  letter-spacing: .1em;
}
.page-news .series-tag--intro { color: var(--turquoise); }
.page-news .series-tag--advanced { color: var(--gold); }
.page-news .series-tag--trouble { color: #ec6a55; }
.page-news .series-tag--ui { color: var(--news-clay-ink); }

.page-news .news-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--t-20);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-news .news-card__excerpt {
  margin: 10px 0 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: var(--t-16);
  line-height: 1.8;
  color: var(--mist);
}
.page-news .news-card__figure {
  margin: 14px 0 0;
  border: 1px solid var(--news-hair);
  overflow: hidden;
}
.page-news .news-card__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news .news-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(140, 147, 166, .26);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .04em;
  color: var(--mist);
}

/* 侧栏索引 */
.page-news .news-index {
  border: 1px solid rgba(227, 178, 60, .34);
  background: linear-gradient(180deg, rgba(27, 42, 85, .92), rgba(16, 27, 59, .92));
  padding: clamp(16px, 2.4vw, 22px);
}
.page-news .news-index__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .16em;
  color: var(--gold);
}
.page-news .series-index {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news .series-index__item + .series-index__item {
  border-top: 1px dashed rgba(140, 147, 166, .24);
}
.page-news .series-index__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 2px;
  font-size: var(--t-16);
  color: var(--paper);
  text-decoration: none;
  transition: color .16s var(--ease), padding-left .16s var(--ease);
}
.page-news .series-index__link:hover,
.page-news .series-index__link:focus-visible {
  color: var(--barley);
  padding-left: 8px;
}
.page-news .series-index__count {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  line-height: 1.8;
  padding: 0 8px;
  border: 1px solid rgba(227, 178, 60, .4);
  border-radius: 999px;
  color: var(--gold);
}
.page-news .index-stat {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(227, 178, 60, .3);
}
.page-news .index-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--t-28);
  line-height: 1.15;
  color: var(--barley);
}
.page-news .index-stat__label {
  display: block;
  margin-top: 8px;
  font-size: var(--t-13);
  line-height: 1.8;
  color: var(--mist);
}

/* 版本记录 */
.page-news .version-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 32px);
}
.page-news .version-figure {
  margin: 0;
  border: 1px solid var(--news-hair);
  background: var(--ink);
  overflow: hidden;
}
.page-news .version-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news .version-list {
  min-width: 0;
  display: grid;
  gap: 12px;
  align-content: start;
}
.page-news .version-item {
  border: 1px solid rgba(140, 147, 166, .28);
  background: rgba(27, 42, 85, .72);
  transition: border-color .16s var(--ease);
}
.page-news .version-item[open] {
  border-color: rgba(227, 178, 60, .5);
}
.page-news .version-item__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}
.page-news .version-item__summary::-webkit-details-marker {
  display: none;
}
.page-news .version-item__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--t-18);
  line-height: 1;
  color: var(--gold);
}
.page-news .version-item[open] .version-item__summary::after {
  content: "−";
}
.page-news .version-item__summary:focus-visible {
  outline: 2px solid var(--turquoise);
  outline-offset: 2px;
}
.page-news .version-item__ver {
  font-family: var(--font-mono);
  font-size: var(--t-13);
  letter-spacing: .06em;
  color: var(--barley);
}
.page-news .version-item__title {
  font-size: var(--t-16);
  line-height: 1.6;
  color: var(--paper);
}
.page-news .version-item__state {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  line-height: 1.7;
  padding: 1px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
  color: var(--turquoise);
}
.page-news .version-item__state--watch {
  color: var(--gold);
}
.page-news .version-item__body {
  padding: 14px 16px 18px;
  border-top: 1px dashed rgba(140, 147, 166, .26);
}
.page-news .version-item__body p {
  margin: 0 0 10px;
  font-size: var(--t-16);
  line-height: 1.85;
  color: var(--mist);
}
.page-news .version-item__body ul {
  margin: 0;
  padding-left: 18px;
}
.page-news .version-item__body li {
  font-size: var(--t-16);
  line-height: 1.9;
  color: var(--paper);
}
.page-news .version-item__body li::marker {
  color: var(--gold);
}

/* 专题系列 */
.page-news .series-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(20px, 3vw, 32px);
}
.page-news .series-card {
  border: 1px solid rgba(140, 147, 166, .26);
  border-top: 3px solid var(--turquoise);
  background: rgba(27, 42, 85, .7);
  padding: 16px;
  transition: transform .16s var(--ease), background-color .16s var(--ease);
}
.page-news .series-card:hover {
  transform: translateY(-4px);
}
.page-news .series-card--advanced { border-top-color: var(--gold); }
.page-news .series-card--trouble { border-top-color: var(--crimson); }
.page-news .series-card--ui { border-top-color: var(--clay); }
.page-news .series-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--t-18);
  line-height: 1.5;
  color: var(--paper);
}
.page-news .series-card__text {
  margin: 8px 0 0;
  font-size: var(--t-16);
  line-height: 1.8;
  color: var(--mist);
}
.page-news .series-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
  border: 1px solid var(--news-hair);
  overflow: hidden;
}
.page-news .series-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 栏目一览与订阅 */
.page-news .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(20px, 3vw, 32px);
}
.page-news .channel-group + .channel-group {
  margin-top: 18px;
}
.page-news .channel-group__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .16em;
  color: var(--gold);
}
.page-news .channel-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-news .channel-links a {
  display: inline-block;
  padding: 7px 14px;
  font-size: var(--t-16);
  color: var(--paper);
  text-decoration: none;
  border: 1px solid rgba(140, 147, 166, .32);
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}
.page-news .channel-links a:hover,
.page-news .channel-links a:focus-visible {
  color: var(--barley);
  border-color: rgba(227, 178, 60, .6);
  background: rgba(27, 42, 85, .7);
}

.page-news .newsletter {
  position: relative;
  border: 1px solid rgba(227, 178, 60, .34);
  background: linear-gradient(160deg, rgba(217, 58, 43, .16), rgba(23, 163, 152, .12) 55%, rgba(27, 42, 85, .92));
  padding: clamp(18px, 2.6vw, 26px);
}
.page-news .newsletter::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--crimson) 0 16px,
    var(--gold) 16px 32px,
    var(--turquoise) 32px 48px,
    var(--clay) 48px 64px
  );
  opacity: .85;
}
.page-news .newsletter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--t-20);
  line-height: 1.45;
  color: var(--paper);
}
.page-news .newsletter__text {
  margin: 12px 0 0;
  font-size: var(--t-16);
  line-height: 1.85;
  color: var(--mist);
}
.page-news .newsletter .btn {
  margin-top: 18px;
}

/* 响应式 */
@media (min-width: 620px) {
  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .news-sec__title {
    font-size: var(--t-44);
  }
}

@media (min-width: 900px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
  .page-news .news-hero__title {
    font-size: var(--t-72);
  }
  .page-news .version-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-news .channel-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-news .tl-item:nth-child(odd) {
    padding-right: 12%;
  }
  .page-news .tl-item:nth-child(3n) {
    padding-right: 5%;
  }
}

@media (min-width: 980px) {
  .page-news .news-body {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
  }
  .page-news .news-index {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }
}

@media (min-width: 1140px) {
  .page-news .series-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .series-card,
  .page-news .series-index__link,
  .page-news .channel-links a,
  .page-news .breadcrumb a {
    transition: none;
  }
  .page-news .news-card:hover,
  .page-news .series-card:hover {
    transform: none;
  }
}