/* ==========================================================
   变动专栏 /column/ · 页面专属样式
   作用域：.page-news
   ========================================================== */

.page-news {
  --rail-w: 238px;
  --feed-gap: 36px;
  --cut-angle: 12deg;
  padding-bottom: 6vh;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  padding: 22px 0 0;
}

.page-news .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
}

.page-news .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-news .breadcrumb-list a {
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease;
}

.page-news .breadcrumb-list a:hover,
.page-news .breadcrumb-list a:focus-visible {
  color: var(--cyan);
}

.page-news .breadcrumb-list [aria-current="page"] {
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: 18px;
  padding: clamp(30px, 4.8vw, 58px) clamp(20px, 4vw, 54px) clamp(26px, 3.8vw, 46px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  box-shadow: var(--shadow-soft);
}

.page-news .news-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-news .news-hero-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.6) contrast(1.12);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(120% 92% at 88% 4%, rgba(42, 27, 74, .78) 0%, rgba(42, 27, 74, 0) 58%),
    linear-gradient(104deg, rgba(4, 20, 15, .96) 0%, rgba(4, 20, 15, .8) 46%, rgba(4, 20, 15, .44) 100%);
}

.page-news .news-hero > *:not(.news-hero-bg) {
  position: relative;
  z-index: 2;
}

.page-news .news-title {
  margin: 14px 0 0;
  font-size: clamp(34px, 6vw, 60px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-news .news-lede {
  max-width: 60ch;
  margin: 18px 0 0;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .hero-meta li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan-deep);
}

.page-news .hero-key {
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-news .hero-val {
  font-family: var(--font-mono);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

/* ---------- 主体栅格 ---------- */
.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-news .news-rail,
.page-news .news-feed {
  min-width: 0;
}

.page-news .rail-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-news .rail-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-news .rail-note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 筛选按钮 ---------- */
.page-news .filter-bar {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.page-news .filter-bar::-webkit-scrollbar {
  height: 6px;
}

.page-news .filter-bar::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: var(--radius-pill);
}

.page-news .filter-btn {
  flex: 0 0 auto;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  white-space: nowrap;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-news .filter-btn:hover {
  color: var(--text);
  border-color: var(--cyan-deep);
}

.page-news .filter-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-deep);
  font-weight: 700;
}

/* ---------- 焦点条目 ---------- */
.page-news .focus-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-news .focus-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-2);
  transition: border-color .25s ease, filter .25s ease;
}

.page-news .focus-card:hover {
  border-color: var(--cyan-deep);
  filter: brightness(1.06);
}

.page-news .focus-flag {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 2;
  padding: 6px 20px 6px 24px;
  background: var(--coral);
  color: #22090A;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  transform: skewX(calc(var(--cut-angle) * -1));
  transform-origin: right top;
  border-bottom-left-radius: 12px;
}

.page-news .focus-flag > span {
  display: inline-block;
  transform: skewX(var(--cut-angle));
  font-weight: 700;
}

.page-news .focus-media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.page-news .focus-media img {
  display: block;
  width: 100%;
  height: 148px;
  object-fit: cover;
  filter: saturate(.85);
}

.page-news .focus-card--lead .focus-media img {
  height: 208px;
}

.page-news .focus-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .focus-title {
  margin: 0;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-news .focus-sum {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-news .focus-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-news .spark {
  flex: 0 0 auto;
  width: 96px;
  height: 26px;
}

.page-news .spark polyline {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-news .focus-note {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 条目流 ---------- */
.page-news .feed-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin: 42px 0 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-news .feed-title {
  margin: 0;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-news .feed-count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-news .entry-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .entry-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color .25s ease;
}

.page-news .entry-item:hover {
  background-color: rgba(43, 245, 200, .035);
}

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

.page-news .entry-main {
  min-width: 0;
}

.page-news .entry-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}

.page-news .entry-time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.page-news .entry-title {
  margin: 0;
  font-size: 17px;
  line-height: 1.48;
  font-weight: 650;
  color: var(--text);
}

.page-news .entry-sum {
  max-width: 68ch;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-news .entry-note {
  max-width: 68ch;
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cyan-deep);
  opacity: .82;
  transition: opacity .25s ease;
}

/* 列表换气注脚 */
.page-news .breath-note {
  margin: 28px 0;
  padding: 15px 18px;
  border-left: 3px solid var(--coral);
  border-radius: 0 10px 10px 0;
  background: linear-gradient(90deg, rgba(255, 107, 74, .12), rgba(255, 107, 74, 0) 74%);
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* 筛选隐藏（渐进增强） */
.page-news [data-filter-item].is-hidden {
  display: none;
}

/* ---------- 专题系列 ---------- */
.page-news .topics-head {
  display: grid;
  gap: 16px;
  margin-top: 8px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.page-news .topics-head .section-title {
  margin: 10px 0 0;
  font-size: clamp(22px, 3.4vw, 29px);
  line-height: 1.26;
  font-weight: 750;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-news .topics-lede {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .topic-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.page-news .topic-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--indigo);
  border-radius: var(--radius);
  background: var(--ink-2);
}

.page-news .topic-card--media {
  border-top-color: var(--cyan-deep);
}

.page-news .topic-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--coral-soft);
}

.page-news .topic-title {
  margin: 0;
  font-size: 18px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--text);
}

.page-news .topic-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-news .topic-rule {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cyan-deep);
}

.page-news .topic-media {
  margin: 0 0 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.page-news .topic-media img {
  display: block;
  width: 100%;
  height: 156px;
  object-fit: cover;
  filter: saturate(.8);
}

/* ---------- 订阅入口 ---------- */
.page-news .sub-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 6px;
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(58, 20, 32, .8) 0%, rgba(10, 35, 28, 0) 62%),
    var(--ink-2);
}

.page-news .sub-title {
  margin: 10px 0 0;
  font-size: clamp(21px, 3.2vw, 27px);
  line-height: 1.28;
  font-weight: 750;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-news .sub-body {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .sub-meta {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--cyan-deep);
}

.page-news .sub-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-news .sub-links {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .sub-links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 200, .35);
}

.page-news .sub-links a:hover {
  color: var(--text);
  border-bottom-color: var(--text);
}

.page-news .sub-media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  align-self: center;
}

.page-news .sub-media img {
  display: block;
  width: 100%;
  height: 190px;
  object-fit: cover;
  filter: saturate(.85);
}

/* ==========================================================
   平板与桌面
   ========================================================== */
@media (min-width: 760px) {
  .page-news .focus-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .focus-card--lead {
    grid-column: 1 / -1;
  }

  .page-news .focus-card--lead .focus-sum {
    max-width: 72ch;
  }

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

  .page-news .topic-card--media {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-news .news-layout {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: var(--feed-gap);
    align-items: start;
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--header-space) + 18px);
  }

  .page-news .filter-bar {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .filter-btn {
    width: 100%;
    text-align: left;
  }

  .page-news .focus-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-news .focus-card--lead {
    grid-column: span 6;
  }

  .page-news .focus-card {
    grid-column: span 3;
  }

  .page-news .topics-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, .85fr);
    align-items: end;
    gap: 40px;
  }

  .page-news .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .topic-card--media {
    grid-column: auto;
  }

  .page-news .sub-card {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 36px;
    align-items: center;
  }

  .page-news .sub-media img {
    height: 240px;
  }

  /* 悬停披露来源口径 */
  .page-news .entry-note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
  }

  .page-news .entry-item:hover .entry-note,
  .page-news .entry-item:focus-within .entry-note {
    max-height: 72px;
    opacity: .82;
  }
}

@media (min-width: 1200px) {
  .page-news .focus-card--lead {
    flex-direction: row;
    align-items: stretch;
    gap: 26px;
    padding: 30px 28px 24px;
  }

  .page-news .focus-card--lead .focus-media {
    flex: 0 0 38%;
    order: 2;
  }

  .page-news .focus-card--lead .focus-media img {
    height: 100%;
    min-height: 210px;
  }

  .page-news .focus-card--lead .focus-meta,
  .page-news .focus-card--lead .focus-title,
  .page-news .focus-card--lead .focus-sum,
  .page-news .focus-card--lead .focus-foot {
    order: 1;
  }

  .page-news .focus-card--lead .focus-foot {
    order: 3;
    flex-basis: 100%;
  }

  .page-news .entry-item {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 20px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    animation: none !important;
    transition: none !important;
  }
}
<<<END>>>