.page-news {
  --news-rail: 226px;
  --news-gap: clamp(20px, 3vw, 40px);
}

/* ===== 页头 ===== */
.page-news .up-masthead {
  padding: clamp(26px, 4.5vw, 62px) 0 clamp(22px, 3vw, 44px);
}

.page-news .crumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-news .crumb a:hover,
.page-news .crumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-news .up-masthead__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-news .up-title {
  margin: 14px 0 18px;
  font-size: clamp(29px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
}

.page-news .up-masthead__lead .lede {
  max-width: 56ch;
  color: var(--mist);
}

.page-news .up-facts {
  display: grid;
  gap: 18px;
  padding: 22px 0 0 22px;
  border-left: 2px solid var(--line);
}

.page-news .up-facts__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
}

.page-news .up-facts__num {
  font-size: clamp(20px, 2.4vw, 26px);
  color: var(--coral);
  letter-spacing: 0.02em;
}

.page-news .up-facts__label {
  font-size: 13.5px;
  color: var(--mist);
  letter-spacing: 0.02em;
}

/* ===== 区块标题组 ===== */
.page-news .up-sec-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px 26px;
  align-items: start;
}

.page-news .up-sec-head__body .prose {
  max-width: 62ch;
  color: var(--mist);
}

.page-news .up-h2 {
  margin: 0 0 12px;
  font-size: clamp(23px, 3.3vw, 36px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink-strong);
}

.page-news .up-sec-head__media {
  margin: 0;
  aspect-ratio: 4 / 3;
}

.page-news .up-sec-head__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-m);
}

/* ===== 01 条目流水 ===== */
.page-news .up-stream {
  position: relative;
  padding: clamp(34px, 5.5vw, 78px) 0 clamp(30px, 4vw, 56px);
  overflow: hidden;
}

.page-news .up-stream__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-news .up-stream__bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  mask-image: linear-gradient(180deg, transparent, #000 26%, #000 74%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 26%, #000 74%, transparent);
}

.page-news .up-stream > .wrap {
  position: relative;
  z-index: 1;
}

.page-news .up-stream__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-news .up-filter {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-news .up-seg {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .up-seg .seg__btn {
  font-size: 13.5px;
  white-space: nowrap;
}

.page-news .up-seg .seg__btn[aria-pressed="true"] {
  border-color: var(--cyan);
  color: var(--ink-strong);
  background: var(--glass);
}

.page-news .up-filter__note {
  color: var(--mist);
  max-width: 34ch;
}

.page-news .up-filter__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, 0.45);
}

.page-news .up-filter__note a:hover,
.page-news .up-filter__note a:focus-visible {
  border-bottom-color: var(--cyan);
}

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

.page-news .up-item {
  position: relative;
  display: grid;
  gap: 9px;
  padding: clamp(18px, 2.3vw, 26px) 0 clamp(18px, 2.3vw, 26px) 16px;
  border-bottom: 1px solid var(--line);
}

.page-news .up-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18%;
  bottom: 18%;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(31, 169, 230, 0));
  opacity: 0;
  transition: opacity .28s var(--ease);
}

.page-news .up-item:hover::before,
.page-news .up-item:focus-within::before {
  opacity: 1;
}

.page-news .up-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
}

.page-news .up-item__cat {
  color: var(--blue);
}

.page-news .up-item__when {
  color: var(--mist);
  opacity: 0.8;
}

.page-news .up-item__title {
  margin: 0;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-strong);
}

.page-news .up-item__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ===== 水波分隔 ===== */
.page-news .up-wave {
  position: relative;
  height: 26px;
  margin: clamp(8px, 2vw, 20px) 0;
}

.page-news .up-wave::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(53, 240, 208, 0.4) 1.5px, transparent 2.2px);
  background-size: 26px 26px;
  background-position: 0 50%;
  mask-image: linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 22%, #000 78%, transparent);
}

/* ===== 02 时间线 ===== */
.page-news .up-time {
  padding: clamp(34px, 5vw, 74px) 0;
}

.page-news .up-time__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.5vw, 44px);
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-news .up-tl__list {
  display: flex;
  gap: 16px;
  margin: 0;
  padding: 4px 4px 16px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-news .up-tl__item {
  position: relative;
  flex: 0 0 min(272px, 76vw);
  scroll-snap-align: start;
  padding: 20px 20px 22px 34px;
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, rgba(11, 37, 54, 0.92), rgba(6, 18, 31, 0.6));
  border: 1px solid var(--line);
  transition: border-color .28s var(--ease), transform .28s var(--ease);
}

.page-news .up-tl__item:hover {
  border-color: rgba(53, 240, 208, 0.45);
  transform: translateY(-2px);
}

.page-news .up-tl__item::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 30px;
  bottom: 24px;
  width: 2px;
  background: var(--line);
}

.page-news .up-tl__item::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--deep-2);
  border: 2px solid var(--line);
  transition: background .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease);
}

.page-news .up-tl__item.is-in::after {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 240, 208, 0.16);
}

.page-news .up-tl__item--done.is-in::after {
  background: var(--coral);
  border-color: var(--coral);
  box-shadow: 0 0 0 4px rgba(255, 107, 74, 0.18);
}

.page-news .up-tl__time {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--blue);
  margin-bottom: 10px;
}

.page-news .up-tl__item .tl__title {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-strong);
}

.page-news .up-tl__item .tl__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .up-time__media {
  margin: 0;
  aspect-ratio: 3 / 2;
}

.page-news .up-time__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-m);
}

/* ===== 03 赛季专题 ===== */
.page-news .up-topics {
  padding: clamp(30px, 4.5vw, 64px) 0 clamp(38px, 5vw, 80px);
}

.page-news .up-topics__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.2vw, 24px);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-news .up-topics__side {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
}

.page-news .up-topic {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-news .up-topic--feature {
  overflow: hidden;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(31, 169, 230, 0.14), rgba(6, 18, 31, 0.7));
}

.page-news .up-topic__media {
  margin: 0;
  aspect-ratio: 16 / 9;
}

.page-news .up-topic__media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .up-topic__body {
  display: grid;
  gap: 12px;
  padding: 4px clamp(18px, 2.4vw, 26px) clamp(20px, 2.6vw, 28px);
}

.page-news .up-topic__tag {
  font-size: 12.5px;
  letter-spacing: 0.09em;
  color: var(--cyan);
}

.page-news .up-topic__title {
  margin: 0;
  color: var(--ink-strong);
}

.page-news .up-topic .card__text {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .up-topic .btn {
  justify-self: start;
  margin-top: 4px;
}

/* ===== 04 投稿与纠错 ===== */
.page-news .up-feedback {
  padding: clamp(30px, 4.5vw, 66px) 0 clamp(48px, 6vw, 92px);
}

.page-news .up-feedback__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: clamp(24px, 3.4vw, 44px);
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(255, 107, 74, 0.16), transparent 58%),
    linear-gradient(150deg, rgba(11, 37, 54, 0.9), rgba(6, 18, 31, 0.72));
}

.page-news .up-feedback__index {
  display: block;
}

.page-news .up-feedback__body .prose {
  max-width: 64ch;
  color: var(--mist);
}

.page-news .up-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-news .up-topics__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .up-topics__side {
    align-content: start;
  }

  .page-news .up-feedback__inner {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-news .up-masthead__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-news .up-sec-head {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 300px);
    gap: 18px 34px;
  }

  .page-news .up-sec-head--plain {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .page-news .up-time__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .up-sec-head--plain + .up-topics__grid,
  .page-news .up-sec-head--plain + .up-time__grid {
    margin-top: clamp(26px, 3.4vw, 44px);
  }
}

@media (min-width: 1000px) {
  .page-news .up-stream__body {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: var(--news-gap);
    align-items: start;
  }

  .page-news .up-filter {
    position: sticky;
    top: calc(var(--bar-h) + 26px);
  }

  .page-news .up-seg {
    flex-direction: column;
    align-items: stretch;
  }

  .page-news .up-seg .seg__btn {
    text-align: left;
    white-space: normal;
  }
}

@media (min-width: 1240px) {
  .page-news .up-tl__item {
    flex-basis: 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .up-item::before,
  .page-news .up-tl__item,
  .page-news .up-tl__item::after,
  .page-news .crumb a {
    transition: none;
  }

  .page-news .up-tl__item:hover {
    transform: none;
  }

  .page-news .up-tl__item::after {
    opacity: 1;
  }

  .page-news .up-tl__item.is-in::after {
    background: var(--cyan);
    border-color: var(--cyan);
  }
}