.page-news {
  --numcol: 52px;
  --tl-line: 1px solid var(--line);
  --news-graphite-band: rgba(27, 38, 42, .55);
}

@media (min-width: 768px) {
  .page-news {
    --numcol: 78px;
  }
}

/* ---------- 报头 ---------- */

.page-news .news-masthead {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-masthead::before {
  content: "";
  position: absolute;
  top: -45%;
  right: -14%;
  width: 60%;
  height: 200%;
  background: linear-gradient(150deg, rgba(63, 224, 206, .12), rgba(63, 98, 128, .16) 46%, transparent 74%);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
  z-index: 0;
}

.page-news .news-masthead::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 84px;
  height: 4px;
  background: var(--cyan);
  pointer-events: none;
}

.page-news .news-masthead__inner {
  position: relative;
  z-index: 1;
}

.page-news .news-masthead__title {
  margin: 10px 0 0;
  font-size: clamp(34px, 8.6vw, 74px);
  line-height: .98;
  letter-spacing: -.035em;
  font-weight: 700;
  color: var(--cream);
}

.page-news .news-masthead__lead {
  max-width: 68ch;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--text);
}

.page-news .news-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 42px;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-news .news-stats__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 96px;
}

.page-news .news-stats__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1;
  letter-spacing: 0;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-news .news-stats__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

/* ---------- 时间线 ---------- */

.page-news .news-timeline {
  padding: clamp(40px, 7vw, 76px) 0 clamp(24px, 4vw, 40px);
}

.page-news .news-timeline__head {
  display: grid;
  gap: 14px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 900px) {
  .page-news .news-timeline__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 34ch);
    align-items: end;
    gap: 40px;
  }
}

.page-news .news-timeline__title {
  margin: 8px 0 0;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.08;
  letter-spacing: -.03em;
  color: var(--cream);
}

.page-news .news-timeline__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-news .tl-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 34px;
  padding: 0;
  list-style: none;
}

.page-news .tl {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .tl__item {
  display: grid;
  grid-template-columns: var(--numcol) minmax(0, 1fr);
  padding-bottom: 44px;
}

.page-news .tl__item:last-child {
  padding-bottom: 0;
}

.page-news .tl__rail {
  position: relative;
  border-right: var(--tl-line);
  padding: 3px 14px 0 0;
  text-align: right;
}

.page-news .tl__rail::after {
  content: "";
  position: absolute;
  top: 12px;
  right: -3px;
  width: 5px;
  height: 5px;
  background: var(--mist);
}

.page-news .tl__item--lead .tl__rail::after {
  top: 16px;
  right: -4px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
}

.page-news .tl__round {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  letter-spacing: 0;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

.page-news .tl__unit {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--mist);
  opacity: .75;
}

.page-news .tl__item--lead .tl__round {
  font-size: clamp(30px, 6vw, 50px);
  color: var(--cyan);
}

.page-news .tl__card {
  min-width: 0;
  padding-left: 20px;
}

@media (min-width: 768px) {
  .page-news .tl__card {
    padding-left: 26px;
  }
}

.page-news .tl__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
}

.page-news .tl__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-news .tl__tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
}

.page-news .tl__tag--observe {
  color: var(--text);
}

.page-news .tl__tag--compare {
  color: var(--cyan);
}

.page-news .tl__tag--explain {
  color: var(--blue);
  filter: brightness(1.5);
}

.page-news .tl__tag--version {
  color: var(--orange);
}

.page-news .tl__when {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

.page-news .tl__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: -.01em;
  font-weight: 600;
  color: var(--cream);
}

.page-news .tl__item--lead .tl__title {
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.22;
  letter-spacing: -.025em;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.page-news .tl__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .tl__item--lead .tl__text {
  font-size: clamp(15px, 1.5vw, 16.5px);
}

.page-news .tl__item--lead .tl__text:first-of-type {
  color: var(--cream);
}

.page-news .tl__fields {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  margin: 16px 0 0;
}

.page-news .tl__fields span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mist);
  border: 1px solid var(--line);
  padding: 4px 9px;
}

.page-news .tl__more {
  margin: 14px 0 0;
}

.page-news .link-more {
  display: inline-block;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 206, .45);
  padding-bottom: 2px;
  transition: border-color .2s var(--ease);
}

.page-news .link-more:hover {
  border-color: var(--cyan);
}

.page-news .tl__inset {
  margin: 18px 0 0;
  max-width: 560px;
}

.page-news .tl__media {
  grid-column: 2;
  margin: 20px 0 0;
  padding-left: 20px;
}

@media (min-width: 768px) {
  .page-news .tl__media {
    padding-left: 26px;
  }
}

@media (min-width: 1024px) {
  .page-news .tl__item--lead {
    grid-template-columns: var(--numcol) minmax(0, 1fr) 340px;
  }

  .page-news .tl__item--lead .tl__media {
    grid-column: 3;
    margin-top: 2px;
    padding-left: 0;
    margin-left: 26px;
  }
}

/* ---------- 标签说明 ---------- */

.page-news .news-tags {
  background: linear-gradient(180deg, rgba(27, 38, 42, .6), rgba(13, 31, 26, 0));
}

.page-news .news-tags__head {
  max-width: 62ch;
  margin-bottom: 34px;
}

.page-news .news-tags__title {
  margin: 8px 0 0;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.12;
  letter-spacing: -.03em;
  color: var(--cream);
}

.page-news .news-tags__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .tagrows {
  display: grid;
  gap: 0;
}

.page-news .tagrow {
  display: grid;
  gap: 12px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.page-news .tagrow:last-child {
  border-bottom: 1px solid var(--line);
}

@media (min-width: 840px) {
  .page-news .tagrow {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 0 36px;
    padding: 30px 0;
  }
}

.page-news .tagrow__name {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-news .tagrow__dot {
  background: var(--text);
  flex: none;
}

.page-news .tagrow__dot--cyan {
  background: var(--cyan);
}

.page-news .tagrow__dot--orange {
  background: var(--orange);
}

.page-news .tagrow__name h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-news .tagrow__body p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .tagrow__figure {
  margin: 20px 0 0;
  max-width: 480px;
}

/* ---------- 专题系列 ---------- */

.page-news .news-series {
  padding: clamp(44px, 7vw, 80px) 0;
}

.page-news .news-series__head {
  max-width: 62ch;
  margin-bottom: 32px;
}

.page-news .news-series__title {
  margin: 8px 0 0;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.12;
  letter-spacing: -.03em;
  color: var(--cream);
}

.page-news .news-series__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .series {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 880px) {
  .page-news .series {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .series__item {
  background: var(--ink);
  padding: 26px 22px 32px;
}

.page-news .series__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--orange);
  margin-bottom: 16px;
}

.page-news .series__title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--cream);
}

.page-news .series__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 归档 ---------- */

.page-news .news-archive {
  background: linear-gradient(180deg, rgba(27, 38, 42, .55), rgba(13, 31, 26, 0));
}

.page-news .news-archive__head {
  margin-bottom: 28px;
}

.page-news .news-archive__title {
  margin: 8px 0 0;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.12;
  letter-spacing: -.03em;
  color: var(--cream);
}

.page-news .news-archive__grid {
  display: grid;
  gap: 34px;
}

@media (min-width: 940px) {
  .page-news .news-archive__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

.page-news .arcs {
  border-top: 1px solid var(--line);
}

.page-news .arc {
  border-bottom: 1px solid var(--line);
}

.page-news .arc__sum {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

.page-news .arc__sum::-webkit-details-marker {
  display: none;
}

.page-news .arc__sum::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  flex: none;
}

.page-news .arc[open] .arc__sum::after {
  content: "–";
}

.page-news .arc__sum:hover .arc__name {
  color: var(--cyan);
}

.page-news .arc__name {
  font-size: 17px;
  font-weight: 600;
  color: var(--cream);
  transition: color .2s var(--ease);
}

.page-news .arc__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
  margin-left: auto;
  padding-right: 14px;
  text-align: right;
}

.page-news .arc__body {
  padding: 0 0 20px;
}

.page-news .arc__body p {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .news-refresh {
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  padding: 24px 22px 26px;
  background: var(--graphite);
}

.page-news .news-refresh__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-news .news-refresh__text {
  margin: 0 0 20px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .news-refresh__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news .news-refresh__list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .news-refresh__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
  padding-top: 2px;
}

.page-news .news-refresh__v {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-news .news-refresh__more {
  margin: 0;
}

/* ---------- 通用收尾 ---------- */

.page-news .figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--graphite);
}

.page-news .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.72) contrast(1.04) brightness(.92);
}

.page-news .figure--16x9 {
  aspect-ratio: 16 / 9;
}

.page-news .figure--4x3 {
  aspect-ratio: 4 / 3;
}

.page-news .figure--1x1 {
  aspect-ratio: 1 / 1;
}

@media (prefers-reduced-motion: reduce) {
  .page-news .link-more,
  .page-news .arc__sum,
  .page-news .arc__name {
    transition: none;
  }
}