.page-news {
  --news-gap: clamp(64px, 8vw, 128px);
  --news-tl: clamp(20px, 3vw, 36px);
  position: relative;
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  position: relative;
  padding-top: clamp(28px, 4.5vw, 60px);
  overflow: hidden;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -16%;
  width: min(60vw, 660px);
  aspect-ratio: 1 / 1;
  background: linear-gradient(150deg, rgba(124, 92, 255, .26), rgba(34, 224, 210, .08) 52%, transparent 72%);
  transform: rotate(-16deg);
  pointer-events: none;
  z-index: 0;
}

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

.page-news .news-hero__head {
  max-width: 800px;
  margin-top: clamp(20px, 3vw, 36px);
}

.page-news .news-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 9vw, 88px);
  line-height: 1.02;
  letter-spacing: .08em;
  color: var(--text);
}

.page-news .news-hero__lead {
  margin: 22px 0 0;
  max-width: 640px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text-muted);
}

.page-news .news-hero__media {
  position: relative;
  margin-top: clamp(34px, 5vw, 62px);
  z-index: 1;
}

.page-news .news-hero__media img {
  display: block;
  width: 100%;
  height: clamp(210px, 36vw, 450px);
  object-fit: cover;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ---------- 索引带 ---------- */

.page-news .news-index {
  position: sticky;
  top: 56px;
  z-index: 20;
  background: rgba(5, 7, 14, .9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-index__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  min-height: 56px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-news .news-index__inner::-webkit-scrollbar {
  display: none;
}

.page-news .news-index__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--text-muted);
  opacity: .7;
}

.page-news .news-index__list {
  display: flex;
  gap: clamp(2px, .8vw, 10px);
  flex: none;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-index__list a {
  display: block;
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color .3s var(--ease), border-color .3s var(--ease);
}

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

/* ---------- 条目列表 ---------- */

.page-news .news-feed {
  margin: clamp(24px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-news .news-item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: clamp(10px, 1.6vw, 24px);
  padding: clamp(18px, 2.4vw, 28px) clamp(8px, 1.4vw, 18px);
  border-bottom: 1px solid var(--line);
  transition: background-color .35s var(--ease);
}

.page-news .news-item__no {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-muted);
  opacity: .65;
  transition: color .3s var(--ease), opacity .3s var(--ease);
}

.page-news .news-item__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
}

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

.page-news .news-item__title {
  margin: 0;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 500;
  line-height: 1.5;
  color: var(--text);
  transition: color .3s var(--ease);
}

.page-news .news-item__sum {
  margin: 8px 0 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-muted);
}

@media (hover: hover) {
  .page-news .news-item:hover {
    background: linear-gradient(90deg, rgba(34, 224, 210, .07), rgba(12, 20, 36, .55) 46%, transparent);
  }

  .page-news .news-item:hover .news-item__no {
    color: var(--cyan);
    opacity: 1;
  }

  .page-news .news-item:hover .news-item__title {
    color: var(--starwhite);
  }
}

/* ---------- 赛程表小课堂 ---------- */

.page-news .news-classroom {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-news .news-classroom__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-news .news-qa-list {
  margin-top: clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-news .news-qa {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .news-qa > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text);
  transition: color .3s var(--ease);
}

.page-news .news-qa > summary::-webkit-details-marker {
  display: none;
}

.page-news .news-qa > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
}

.page-news .news-qa[open] > summary::after {
  content: "−";
}

.page-news .news-qa > summary:hover {
  color: var(--cyan);
}

.page-news .news-qa__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--text-muted);
}

.page-news .news-qa__a {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-news .news-classroom__more {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 14px;
}

/* ---------- 专题系列 ---------- */

.page-news .news-series {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-news .news-series__card {
  position: relative;
  padding: clamp(22px, 2.6vw, 32px);
  border: 1px solid transparent;
  border-radius: 2px;
  background:
    linear-gradient(var(--ink-800), var(--ink-800)) padding-box,
    linear-gradient(140deg, var(--violet), var(--cyan) 58%, rgba(27, 39, 64, .5)) border-box;
}

.page-news .news-series__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--cyan);
}

.page-news .news-series__title {
  margin: 14px 0 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 500;
  line-height: 1.45;
  color: var(--text);
}

.page-news .news-series__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-news .news-series__meta {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--text-muted);
  opacity: .85;
}

.page-news .news-series__media {
  margin: clamp(28px, 4vw, 50px) 0 0;
}

.page-news .news-series__media img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 版本迭代记录 ---------- */

.page-news .news-timeline {
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: 0 0 0 var(--news-tl);
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-news .news-timeline > li {
  position: relative;
  padding-bottom: clamp(24px, 3vw, 38px);
}

.page-news .news-timeline > li:last-child {
  padding-bottom: 0;
}

.page-news .news-timeline > li::before {
  content: "";
  position: absolute;
  top: 7px;
  left: calc(-1 * var(--news-tl) - 4px);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 224, 210, .12);
}

.page-news .news-timeline__ver {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-news .news-timeline__title {
  margin: 10px 0 0;
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 500;
  line-height: 1.45;
  color: var(--text);
}

.page-news .news-timeline__text {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-news .news-releases__media {
  margin: clamp(30px, 4vw, 48px) 0 0;
}

.page-news .news-releases__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-news .news-releases__more {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 14px;
}

/* ---------- 投稿与线索 ---------- */

.page-news .news-contribute {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  margin-top: clamp(24px, 3.5vw, 42px);
}

.page-news .news-contribute .panel {
  padding: clamp(22px, 2.4vw, 30px);
}

.page-news .news-contribute__label {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--text-muted);
}

.page-news .news-contribute .panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-news .news-contribute__more {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-news .link-inline {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 210, .4);
  transition: border-color .3s var(--ease);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-news .news-item {
    grid-template-columns: 3.6rem minmax(0, 1fr);
  }
}

@media (min-width: 860px) {
  .page-news .news-series {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .news-contribute {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .news-contribute .panel:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-news .news-classroom {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-news .news-contribute {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .news-contribute .panel:last-child {
    grid-column: auto;
  }
}

@media (max-width: 520px) {
  .page-news .news-hero h1 {
    letter-spacing: .04em;
  }

  .page-news .news-index {
    top: 0;
  }

  .page-news .news-item__sum {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}