/* =========================================================
   专题中心 /topics/  ·  页面专属样式
   作用域：.page-news
   ========================================================= */

.page-news {
  --news-ink-soft: #4E4238;
  --news-line: var(--steel);
  background: var(--night);
  color: var(--text);
}

.page-news [id^="topic-"] {
  scroll-margin-top: 88px;
}

/* ---------- 首屏 ---------- */
.page-news .news-mast {
  padding-top: clamp(14px, 3vw, 34px);
  padding-bottom: clamp(30px, 5vw, 62px);
}

.page-news .news-mast .m6-crumbs {
  margin-bottom: clamp(18px, 3vw, 34px);
}

.page-news .news-mast__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

@media (min-width: 940px) {
  .page-news .news-mast__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }
}

.page-news .news-mast__title {
  max-width: 20ch;
  text-wrap: balance;
}

.page-news .news-mast__lede {
  max-width: 46ch;
  margin-top: 20px;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: var(--text);
  opacity: 0.86;
}

.page-news .news-mast__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

/* 更新概况面板 */
.page-news .news-board {
  background: var(--cabin);
  clip-path: var(--cut);
  padding: clamp(20px, 2.4vw, 28px);
}

.page-news .news-board__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-news .news-board__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--steel);
}

.page-news .news-board__list li:last-child {
  border-bottom: 0;
}

.page-news .news-board__k {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-news .news-board__v {
  font-size: 15px;
  color: var(--cyan);
}

.page-news .news-board__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--steel);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 横向专题索引 ---------- */
.page-news .news-indexband {
  border-top: 1px solid var(--steel);
  border-bottom: 1px solid var(--steel);
  background: linear-gradient(90deg, rgba(56, 242, 224, 0.06), rgba(7, 11, 20, 0) 60%);
}

.page-news .news-index {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-news .news-index__label {
  flex: 0 0 auto;
  color: var(--cyan);
}

.page-news .news-index__track {
  display: flex;
  gap: 8px;
  flex: 1 1 auto;
  min-width: 0;
  list-style: none;
  margin: 0;
  padding: 4px 0 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-news .news-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 15px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--slate);
  border: 1px solid var(--steel);
  clip-path: var(--cut-xs);
  transition: color 0.22s var(--ease), background-color 0.22s var(--ease),
    border-color 0.22s var(--ease);
}

.page-news .news-index__link:hover,
.page-news .news-index__link:focus-visible {
  color: var(--night);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-news .news-index__no {
  font-family: var(--mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  opacity: 0.7;
}

/* ---------- 通用区块标题 ---------- */
.page-news .news-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-news .news-head__lede {
  margin-top: 16px;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: var(--text);
  opacity: 0.82;
}

.page-news .news-paper .news-head__lede {
  color: var(--news-ink-soft);
  opacity: 1;
}

/* ---------- 图片容器 ---------- */
.page-news .news-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: var(--cut);
  background: var(--cabin);
}

.page-news .news-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .news-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0) 45%, rgba(7, 11, 20, 0.55) 100%);
}

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

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

.page-news .news-figure--std {
  aspect-ratio: 3 / 2;
}

.page-news .news-figure--rule {
  aspect-ratio: 3 / 2;
  margin-bottom: clamp(26px, 4vw, 44px);
}

@media (min-width: 820px) {
  .page-news .news-figure--rule {
    aspect-ratio: 3 / 1;
  }
}

.page-news .news-figure__cap {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 01 本期主打 ---------- */
.page-news .news-feature {
  display: grid;
  gap: clamp(20px, 2.6vw, 32px);
  padding-bottom: clamp(26px, 3.4vw, 42px);
  border-bottom: 1px solid rgba(36, 28, 23, 0.18);
}

@media (min-width: 920px) {
  .page-news .news-feature {
    grid-template-columns: 8fr 4fr;
    align-items: center;
  }
}

.page-news .news-feature__body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--news-ink-soft);
}

.page-news .news-feature__body .m6-h3 {
  margin-top: 14px;
}

.page-news .news-feature__meta {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed rgba(36, 28, 23, 0.22);
  font-size: 13px;
  color: rgba(36, 28, 23, 0.62);
}

.page-news .news-feature__meta .m6-num {
  font-size: 20px;
  color: var(--ink);
}

.page-news .news-feature__pair {
  display: grid;
  gap: clamp(20px, 2.6vw, 32px);
  margin-top: clamp(26px, 3.4vw, 44px);
}

@media (min-width: 760px) {
  .page-news .news-feature__pair {
    grid-template-columns: 1fr 1fr;
  }
}

.page-news .news-mini {
  position: relative;
  padding: 22px 22px 24px;
  background: rgba(255, 255, 255, 0.5);
  clip-path: var(--cut);
}

.page-news .news-mini::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 42px;
  background: var(--orange);
}

.page-news .news-mini .m6-h3 {
  margin-top: 14px;
}

.page-news .news-mini p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--news-ink-soft);
}

.page-news .news-mini__meta {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 16px;
  font-size: 13px;
  color: rgba(36, 28, 23, 0.62);
}

.page-news .news-mini__meta .m6-num {
  font-size: 18px;
  color: var(--ink);
}

/* ---------- 02 替补贡献 ---------- */
.page-news .news-board-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

@media (min-width: 940px) {
  .page-news .news-board-grid {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }
}

.page-news .news-board-grid__aside {
  position: relative;
}

@media (min-width: 940px) {
  .page-news .news-board-grid__aside {
    position: sticky;
    top: 96px;
  }
}

.page-news .news-filter {
  margin-bottom: 8px;
}

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

.page-news .news-item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 20px 0;
  border-bottom: 1px solid var(--news-line);
  transition: background-color 0.22s var(--ease);
}

@media (min-width: 720px) {
  .page-news .news-item {
    grid-template-columns: 42px 1fr 104px;
    gap: 22px;
    align-items: start;
  }
}

.page-news .news-item:hover {
  background: rgba(14, 22, 38, 0.6);
}

.page-news .news-item__no {
  font-family: var(--mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  padding-top: 3px;
}

.page-news .news-item__title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(16px, 1.35vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-news .news-item__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-news .news-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  opacity: 0.55;
  transition: opacity 0.22s var(--ease);
}

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

.page-news .news-item__tags span {
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
  border: 1px solid var(--steel);
  clip-path: var(--cut-xs);
}

.page-news .news-item:hover .news-item__tags span {
  color: var(--cyan);
  border-color: rgba(56, 242, 224, 0.45);
}

.page-news .news-item__tags .m6-num {
  color: var(--lime);
}

.page-news .news-heat {
  grid-column: 2;
  display: flex;
  gap: 3px;
  width: 104px;
  margin-top: 8px;
}

@media (min-width: 720px) {
  .page-news .news-heat {
    grid-column: 3;
    justify-self: end;
    margin-top: 6px;
  }
}

.page-news .news-heat .m6-heat__cell {
  flex: 1 1 0;
  height: 14px;
}

/* ---------- 03 阵容观察 ---------- */
.page-news .news-grid2 {
  display: grid;
  gap: 0 clamp(24px, 3vw, 40px);
}

@media (min-width: 800px) {
  .page-news .news-grid2 {
    grid-template-columns: 1fr 1fr;
  }
}

.page-news .news-brief {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 4px 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--news-line);
  transition: border-color 0.22s var(--ease);
}

.page-news .news-brief:hover {
  border-bottom-color: var(--cyan);
}

.page-news .news-brief__no {
  grid-row: span 2;
  font-family: var(--mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
  padding-top: 4px;
}

.page-news .news-brief__title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(15.5px, 1.25vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
}

.page-news .news-brief__desc {
  grid-column: 2;
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 04 规则解读 ---------- */
.page-news .news-rules {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-news .news-rule {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 20px 0 22px;
}

.page-news .news-rule::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 46px;
  bottom: -4px;
  width: 1px;
  background: repeating-linear-gradient(
    180deg,
    rgba(166, 50, 110, 0.55) 0 5px,
    rgba(166, 50, 110, 0) 5px 11px
  );
}

.page-news .news-rule:last-child::before {
  display: none;
}

.page-news .news-rule__step {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  background: var(--magenta);
  clip-path: var(--cut-xs);
}

.page-news .news-rule__title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(15.5px, 1.25vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

.page-news .news-rule__body p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--news-ink-soft);
}

/* ---------- 05 版本记录 ---------- */
.page-news .news-version {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

@media (min-width: 900px) {
  .page-news .news-version {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }
}

.page-news .news-version__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 2px solid var(--steel);
}

.page-news .news-version__item {
  position: relative;
  padding: 0 0 26px 26px;
}

.page-news .news-version__item:last-child {
  padding-bottom: 4px;
}

.page-news .news-version__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 7px;
  width: 12px;
  height: 12px;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-news .news-version__k {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
  border: 1px solid rgba(214, 255, 61, 0.35);
  padding: 2px 8px;
  clip-path: var(--cut-xs);
}

.page-news .news-version__title {
  margin: 12px 0 0;
  font-family: var(--sans);
  font-size: clamp(15.5px, 1.25vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
}

.page-news .news-version__item p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 06 怎么追更新 ---------- */
.page-news .news-cols {
  display: grid;
  gap: clamp(18px, 2.4vw, 28px);
}

@media (min-width: 780px) {
  .page-news .news-cols {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-news .news-col-card {
  display: flex;
  flex-direction: column;
  padding: 24px 22px 22px;
  background: rgba(255, 255, 255, 0.55);
  clip-path: var(--cut);
}

.page-news .news-col-card__k {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--magenta);
}

.page-news .news-col-card__title {
  margin: 12px 0 0;
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-news .news-col-card p {
  margin: 12px 0 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--news-ink-soft);
}

.page-news .news-col-card .m6-btn--link {
  margin-top: auto;
  align-self: flex-start;
}

.page-news .news-follow__foot {
  max-width: 62ch;
  margin: clamp(28px, 3.6vw, 44px) 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(36, 28, 23, 0.18);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--news-ink-soft);
}

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

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-index__link,
  .page-news .news-item,
  .page-news .news-item__tags,
  .page-news .news-brief {
    transition: none;
  }
}