/* ============================================================
   专题中心 /topics/
   作用域：.page-news
   ============================================================ */

.page-news {
  --news-rail-w: 14rem;
  --news-gap: clamp(1.75rem, 3.5vw, 3.25rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

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

.page-news a:focus-visible {
  outline: 2px solid var(--ls-cyan);
  outline-offset: 3px;
  border-radius: var(--ls-r-sm);
}

/* ---------- 面包屑 ---------- */
.page-news .news-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  padding: clamp(1.1rem, 2.5vw, 1.75rem) 0 .5rem;
  font-family: var(--ls-font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--ls-slate);
}

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

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

.page-news .news-crumb__sep {
  color: var(--ls-moss);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2.25rem, 5vw, 3.75rem);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: clamp(80px, 15vw, 210px);
  height: 3px;
  border-radius: var(--ls-pill);
  background: linear-gradient(90deg, transparent, var(--ls-volt));
}

.page-news .news-hero h1 {
  margin: .85rem 0 0;
  font-size: clamp(2rem, 5.4vw, 3.3rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--ls-cream);
}

.page-news .news-hero__lead {
  margin: 1.1rem 0 0;
  max-width: 48ch;
  font-size: clamp(1rem, .5vw + .92rem, 1.12rem);
  line-height: 1.78;
  color: var(--ls-slate);
}

.page-news .news-hero__spots {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.5rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
  font-size: .88rem;
  color: var(--ls-slate);
}

.page-news .news-hero__spots li {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
}

.page-news .news-hero__spots .ls-num {
  font-size: 1.2rem;
  letter-spacing: -.01em;
  color: var(--ls-volt);
}

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

.page-news .news-media {
  margin: 0 0 clamp(1.25rem, 3vw, 1.75rem);
  position: relative;
  border-radius: var(--ls-r-lg);
  overflow: hidden;
  border: 1px solid var(--ls-line);
}

.page-news .news-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(122deg, rgba(53, 230, 218, .16), transparent 46%, rgba(255, 210, 74, .1));
}

.page-news .news-media img {
  width: 100%;
  object-fit: cover;
}

@media (min-width: 1024px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(2rem, 4vw, 4rem);
  }
}

/* ---------- 双栏骨架 ---------- */
.page-news .news-layout {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
}

.page-news .news-rail {
  display: none;
}

@media (min-width: 1024px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: var(--news-gap);
  }

  .page-news .news-rail {
    display: block;
    position: sticky;
    top: 1.75rem;
  }
}

.page-news .news-rail__caption {
  margin: 0 0 .8rem;
  font-family: var(--ls-font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ls-slate);
}

.page-news .news-rail__nav {
  display: flex;
  flex-direction: column;
  gap: .15rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.page-news .news-rail__nav a {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .5rem .7rem .5rem .85rem;
  border-left: 2px solid transparent;
  border-radius: 0 var(--ls-r-sm) var(--ls-r-sm) 0;
  font-size: .9rem;
  color: var(--ls-slate);
  text-decoration: none;
  transition: color var(--ls-dur) var(--ls-ease),
              background var(--ls-dur) var(--ls-ease),
              border-color var(--ls-dur) var(--ls-ease),
              padding-left var(--ls-dur) var(--ls-ease);
}

.page-news .news-rail__nav a:hover,
.page-news .news-rail__nav a:focus-visible {
  color: var(--ls-cream);
  background: var(--ls-track);
  border-left-color: var(--ls-cyan);
  padding-left: 1.05rem;
}

.page-news .news-rail__nav .ls-num {
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--ls-cyan);
}

.page-news .news-rail__note {
  margin: 1.6rem 0 0;
  padding: .9rem 1rem;
  border-radius: var(--ls-r-md);
  border: 1px solid var(--ls-line);
  background: var(--ls-track);
  font-size: .82rem;
  line-height: 1.75;
  color: var(--ls-slate);
}

/* ---------- 章节 ---------- */
.page-news .news-section {
  padding-block: clamp(2.25rem, 5vw, 3.5rem);
  border-top: 1px solid var(--ls-line);
  scroll-margin-top: calc(var(--ls-bar-h) + 1rem);
}

.page-news .news-section:first-child {
  border-top: 0;
  padding-top: 0;
}

@media (min-width: 1024px) {
  .page-news .news-section {
    scroll-margin-top: 1.75rem;
  }
}

.page-news .news-section__head {
  margin-bottom: clamp(1.4rem, 3vw, 2.1rem);
}

.page-news .news-section__head h2 {
  margin: .65rem 0 0;
  font-size: clamp(1.5rem, 3.1vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--ls-cream);
}

.page-news .news-section__lead {
  margin: .85rem 0 0;
  max-width: 58ch;
  font-size: .97rem;
  line-height: 1.78;
  color: var(--ls-slate);
}

/* ---------- 头条条目 ---------- */
.page-news .news-feature {
  position: relative;
  padding: clamp(1.2rem, 2.8vw, 1.9rem);
  border-radius: var(--ls-r-lg);
  border: 1px solid var(--ls-line);
  background:
    linear-gradient(148deg, rgba(53, 230, 218, .09), rgba(11, 20, 36, .94) 58%);
  overflow: hidden;
}

.page-news .news-feature::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: clamp(70px, 12vw, 140px);
  height: 2px;
  background: linear-gradient(90deg, var(--ls-cyan), transparent);
}

.page-news .news-feature__tag {
  margin: 0;
  font-family: var(--ls-font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--ls-volt);
}

.page-news .news-feature h3 {
  margin: .75rem 0 0;
  font-size: clamp(1.32rem, 2.7vw, 1.85rem);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--ls-cream);
}

.page-news .news-feature h3 a {
  color: inherit;
  text-decoration: none;
  transition: color var(--ls-dur) var(--ls-ease);
}

.page-news .news-feature h3 a:hover,
.page-news .news-feature h3 a:focus-visible {
  color: var(--ls-cyan);
}

.page-news .news-feature p {
  margin: .85rem 0 0;
  max-width: 66ch;
  font-size: .96rem;
  line-height: 1.78;
  color: var(--ls-slate);
}

/* ---------- 条目列表 ---------- */
.page-news .news-list {
  margin-top: clamp(1rem, 2.5vw, 1.6rem);
}

.page-news .news-item {
  padding: clamp(1rem, 2.2vw, 1.35rem) .85rem;
  border-bottom: 1px solid var(--ls-line);
  border-radius: var(--ls-r-sm);
  transition: background var(--ls-dur) var(--ls-ease),
              border-color var(--ls-dur) var(--ls-ease);
}

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  background: rgba(11, 20, 36, .78);
  border-bottom-color: rgba(53, 230, 218, .4);
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem .75rem;
  margin-bottom: .45rem;
}

.page-news .news-item__idx {
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--ls-cyan);
}

.page-news .news-item__phase {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--ls-slate);
}

.page-news .news-item h3 {
  margin: 0;
  font-size: clamp(1.02rem, 1.7vw, 1.2rem);
  font-weight: 600;
  line-height: 1.38;
  color: var(--ls-cream);
}

.page-news .news-item h3 a {
  color: inherit;
  text-decoration: none;
}

.page-news .news-item h3 a:hover,
.page-news .news-item h3 a:focus-visible {
  color: var(--ls-cyan);
}

.page-news .news-item__desc {
  margin: .5rem 0 0;
  max-width: 68ch;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ls-slate);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
}

.page-news .news-item:hover .news-item__desc,
.page-news .news-item:focus-within .news-item__desc {
  -webkit-line-clamp: 12;
  line-clamp: 12;
}

/* ---------- 对照笔记 ---------- */
.page-news .news-diffs {
  display: grid;
  gap: clamp(.9rem, 2.2vw, 1.35rem);
}

@media (min-width: 760px) {
  .page-news .news-diffs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-news .news-diff {
  padding: clamp(1.05rem, 2.4vw, 1.5rem);
  border-radius: var(--ls-r-md);
  border: 1px solid var(--ls-line);
  background: var(--ls-track);
  transition: transform var(--ls-dur) var(--ls-ease),
              border-color var(--ls-dur) var(--ls-ease);
}

.page-news .news-diff:hover,
.page-news .news-diff:focus-within {
  transform: translateY(-2px);
  border-color: rgba(53, 230, 218, .45);
}

.page-news .news-diff__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
}

.page-news .news-diff__no {
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--ls-slate);
}

.page-news .news-diff h3 {
  margin: .7rem 0 .9rem;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ls-cream);
}

.page-news .news-diff__pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: .5rem;
  padding: .85rem .9rem;
  border-radius: var(--ls-r-sm);
  border: 1px dashed var(--ls-line-strong);
  background: rgba(5, 7, 14, .7);
}

.page-news .news-diff__cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .2rem;
  text-align: center;
}

.page-news .news-diff__val {
  font-size: clamp(1.15rem, 2.8vw, 1.6rem);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--ls-clay);
}

.page-news .news-diff__cell--new .news-diff__val {
  color: var(--ls-volt);
}

.page-news .news-diff__tag {
  font-family: var(--ls-font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--ls-slate);
}

.page-news .news-diff__arrow {
  font-size: 1rem;
  color: var(--ls-cyan);
}

.page-news .news-diff__delta {
  display: inline-flex;
  align-items: center;
  margin: .8rem 0 0;
  padding: .18rem .65rem;
  border-radius: var(--ls-pill);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--ls-ink);
  background: var(--ls-volt);
}

.page-news .news-diff__desc {
  margin: .75rem 0 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--ls-slate);
}

/* ---------- 冰雪赛季 ---------- */
.page-news .news-ice {
  display: grid;
  gap: clamp(.9rem, 2vw, 1.25rem);
}

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

.page-news .news-ice__item {
  position: relative;
  padding: 1.15rem 1.25rem 1.35rem;
  border-radius: var(--ls-r-md);
  border: 1px solid var(--ls-line);
  background: linear-gradient(158deg, rgba(53, 230, 218, .09), rgba(11, 20, 36, .94));
  overflow: hidden;
  transition: transform var(--ls-dur) var(--ls-ease),
              border-color var(--ls-dur) var(--ls-ease);
}

.page-news .news-ice__item:hover,
.page-news .news-ice__item:focus-within {
  transform: translateY(-2px);
  border-color: rgba(53, 230, 218, .4);
}

.page-news .news-ice__item::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -42%;
  width: 62%;
  height: 92%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(53, 230, 218, .18), transparent 66%);
}

.page-news .news-ice__no {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--ls-cyan);
}

.page-news .news-ice__name {
  position: relative;
  margin: .55rem 0 0;
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--ls-cream);
}

.page-news .news-ice__desc {
  position: relative;
  margin: .6rem 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--ls-slate);
}

/* ---------- 栏目索引 ---------- */
.page-news .news-archive {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-archive__row {
  display: grid;
  gap: .4rem .9rem;
  align-items: baseline;
  padding: .95rem .2rem;
  border-bottom: 1px solid var(--ls-line);
  transition: padding-left var(--ls-dur) var(--ls-ease),
              border-color var(--ls-dur) var(--ls-ease);
}

.page-news .news-archive__row:first-child {
  border-top: 1px solid var(--ls-line);
}

.page-news .news-archive__row:hover {
  padding-left: .7rem;
  border-bottom-color: rgba(53, 230, 218, .35);
}

@media (min-width: 760px) {
  .page-news .news-archive__row {
    grid-template-columns: 9.5rem 8.5rem minmax(0, 1fr);
  }
}

.page-news .news-archive__name {
  font-size: .98rem;
  font-weight: 600;
  color: var(--ls-cream);
}

.page-news .news-archive__desc {
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--ls-slate);
}

/* ---------- 行动区 ---------- */
.page-news .news-callout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.1rem;
  margin-top: clamp(1.6rem, 3.5vw, 2.4rem);
  padding: clamp(1.15rem, 2.6vw, 1.7rem);
  border-radius: var(--ls-r-lg);
  border: 1px solid var(--ls-line-strong);
  background: linear-gradient(108deg, rgba(53, 230, 218, .12), rgba(5, 7, 14, .72) 62%);
}

.page-news .news-callout__text h3 {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--ls-cream);
}

.page-news .news-callout__text p {
  margin: .5rem 0 0;
  max-width: 46ch;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--ls-slate);
}

.page-news .news-callout__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

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

  .page-news .news-diff:hover,
  .page-news .news-ice__item:hover {
    transform: none;
  }
}
</PAGE_CSS>