.page-news {
  --pn-hair: rgba(60, 71, 68, .42);
  --pn-hair-dark: rgba(243, 238, 228, .18);
  --pn-soft: rgba(243, 238, 228, .78);
  overflow-x: clip;
}

/* ---------- 页头 ---------- */
.page-news .breadcrumb {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-news .page-news__intro {
  padding: clamp(2rem, 6vw, 4.5rem) 0 clamp(2.5rem, 6vw, 5rem);
}

.page-news .page-news__kicker {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-news .page-news__kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--moss);
  flex: none;
}

.page-news .page-news__title {
  margin: .9rem 0 1.25rem;
  max-width: 17em;
  font-size: clamp(2rem, 6.2vw, 4.2rem);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-news .page-news__lede {
  max-width: 34em;
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--rock-mid);
}

/* ---------- 通用小节标题 ---------- */
.page-news .sec-head {
  max-width: 44em;
}

.page-news .sec-head .index-label {
  display: block;
  margin: 0 0 .7rem;
  color: var(--moss);
}

.page-news .sec-head .headline {
  margin: 0;
  color: var(--ink);
}

.page-news .sec-head__lede {
  margin: 1rem 0 0;
  color: var(--rock-mid);
}

/* ---------- 头条专题 ---------- */
.page-news .lead-story {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-news .lead-story__fig {
  margin: 0;
}

.page-news .lead-story__tag {
  display: block;
  margin: 0 0 1rem;
  color: var(--amber);
}

.page-news .lead-story__title {
  margin: 0 0 1.25rem;
  max-width: 13em;
  color: var(--moon);
}

.page-news .lead-story__sum {
  max-width: 33em;
  margin: 0 0 1rem;
  line-height: 1.8;
  color: var(--pn-soft);
}

.page-news .lead-story__body .btn {
  margin-top: 1.25rem;
}

@media (min-width: 900px) {
  .page-news .lead-story {
    grid-template-columns: 7fr 5fr;
    gap: clamp(2rem, 4vw, 3.75rem);
  }
}

/* ---------- 栏目分类条 ---------- */
.page-news .cat-strip {
  list-style: none;
  display: grid;
  gap: 1.25rem;
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  padding: 0;
}

@media (min-width: 620px) {
  .page-news .cat-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-news .cat-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

.page-news .cat-card {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: 1.25rem 1.25rem 1.5rem;
  background: var(--rock);
  border: 2px solid var(--rock-mid);
  box-shadow: var(--shadow-hard);
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-news .cat-card:hover,
.page-news .cat-card:focus-within {
  border-color: var(--amber);
  box-shadow: var(--shadow-hard-hover);
}

.page-news .cat-card__bar {
  display: block;
  width: 46px;
  height: 6px;
  margin-bottom: .35rem;
}

.page-news .cat-card--amber .cat-card__bar { background: var(--amber); }
.page-news .cat-card--moss  .cat-card__bar { background: var(--moss); }
.page-news .cat-card--cyan  .cat-card__bar { background: var(--cyan); }
.page-news .cat-card--clay  .cat-card__bar { background: var(--clay); }

.page-news .cat-card__name {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--moon);
}

.page-news .cat-card__desc {
  margin: 0;
  font-size: .9063rem;
  line-height: 1.7;
  color: var(--pn-soft);
}

.page-news .cat-card__freq {
  margin: auto 0 0;
  padding-top: .85rem;
  border-top: 1px solid var(--pn-hair-dark);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

/* ---------- 条目列表 ---------- */
.page-news .news-list {
  list-style: none;
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-news .news-item {
  position: relative;
  display: grid;
  gap: 1rem;
  padding: clamp(1.5rem, 3.5vw, 2.5rem) 0;
  border-bottom: 1px solid var(--pn-hair);
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--amber);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--ease);
}

.page-news .news-item:hover::before,
.page-news .news-item:focus-within::before {
  transform: scaleY(1);
}

@media (min-width: 820px) {
  .page-news .news-item {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
    padding-left: 1.5rem;
  }
}

.page-news .news-item__aside {
  display: flex;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 820px) {
  .page-news .news-item__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: .9rem;
  }
}

.page-news .news-item__no {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--stone);
  transition: color var(--ease);
}

.page-news .news-item:hover .news-item__no {
  color: var(--amber);
}

.page-news .news-item__cat {
  display: inline-block;
  padding: .3rem .65rem;
  font-size: .6875rem;
  letter-spacing: .12em;
  line-height: 1.2;
  white-space: nowrap;
}

.page-news .news-item__cat--amber { background: var(--amber); color: var(--ink); }
.page-news .news-item__cat--moss  { background: var(--moss);  color: var(--paper); }
.page-news .news-item__cat--cyan  { background: var(--rock-mid); color: var(--cyan); }
.page-news .news-item__cat--clay  { background: var(--clay);  color: var(--paper); }

.page-news .news-item__main {
  min-width: 0;
}

.page-news .news-item__time {
  display: flex;
  align-items: center;
  gap: .625rem;
  margin: 0 0 .65rem;
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--stone);
}

.page-news .news-item__time::before {
  content: "";
  width: 2px;
  height: 14px;
  background: var(--moss);
  flex: none;
}

.page-news .news-item__title {
  margin: 0 0 .75rem;
  max-width: 26em;
  font-size: clamp(1.0625rem, 2.2vw, 1.4375rem);
  font-weight: 600;
  line-height: 1.32;
  color: var(--ink);
}

.page-news .news-item__sum {
  margin: 0;
  max-width: 34em;
  font-size: .9688rem;
  line-height: 1.78;
  color: var(--rock-mid);
}

.page-news .news-item__fig {
  margin: 1.5rem 0 0;
  max-width: 34em;
}

@media (min-width: 1040px) {
  .page-news .news-item--feature .news-item__fig {
    max-width: 30em;
  }
}

/* ---------- 专题系列 ---------- */
.page-news .series {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

@media (min-width: 900px) {
  .page-news .series {
    grid-template-columns: 6fr 5fr;
  }
}

.page-news .series__tag {
  display: block;
  margin: 0 0 1rem;
  color: var(--amber);
}

.page-news .series__title {
  margin: 0 0 1.1rem;
  color: var(--moon);
}

.page-news .series__lede {
  max-width: 32em;
  margin: 0 0 1.5rem;
  line-height: 1.8;
  color: var(--pn-soft);
}

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

.page-news .issue-list {
  list-style: none;
  margin: clamp(2.25rem, 5vw, 3.5rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--pn-hair-dark);
}

.page-news .issue {
  display: grid;
  gap: .3rem 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--pn-hair-dark);
  transition: border-color var(--ease);
}

.page-news .issue:hover {
  border-color: var(--amber);
}

@media (min-width: 640px) {
  .page-news .issue {
    grid-template-columns: 128px minmax(0, 1fr);
    align-items: baseline;
  }
}

.page-news .issue__no {
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-news .issue__title {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--moon);
}

/* ---------- 观察方法与延伸 ---------- */
.page-news .method {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

@media (min-width: 900px) {
  .page-news .method {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

.page-news .method .index-label {
  display: block;
  margin: 0 0 .7rem;
  color: var(--moss);
}

.page-news .method__main .headline {
  margin: 0;
  color: var(--ink);
}

.page-news .method__list {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-news .method__list li {
  position: relative;
  max-width: 34em;
  padding-left: 1.5rem;
  line-height: 1.78;
  color: var(--rock-mid);
}

.page-news .method__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 10px;
  height: 2px;
  background: var(--clay);
}

.page-news .method__side {
  display: grid;
  gap: 1.5rem;
}

.page-news .method__note {
  margin: .5rem 0 0;
  line-height: 1.75;
}

.page-news .method__note a {
  color: var(--clay);
  text-decoration: underline;
  text-underline-offset: .22em;
}

.page-news .method__links {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 1.1rem 0 0;
}

/* ---------- 收束 ---------- */
.page-news .closing {
  display: grid;
  justify-items: start;
  gap: 1.1rem;
  margin-top: clamp(3rem, 8vw, 6rem);
  padding-top: clamp(2rem, 5vw, 3rem);
  border-top: 2px solid var(--ink);
}

.page-news .closing__mark {
  font-family: var(--font-mono);
  font-size: clamp(2.75rem, 12vw, 7.5rem);
  font-weight: 300;
  line-height: .9;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--stone);
}

.page-news .closing__note {
  margin: 0;
  max-width: 32em;
  line-height: 1.75;
  color: var(--rock-mid);
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item::before,
  .page-news .news-item__no,
  .page-news .cat-card,
  .page-news .issue {
    transition: none;
  }
}