/* ===== 趋势观察 · 页面专属样式 ===== */

.page-news {
  --news-gap: clamp(28px, 4.5vw, 56px);
  --news-aside-w: 320px;
  background: var(--ink-900);
  color: var(--text);
  overflow-x: hidden;
}

/* ---------- 页头 ---------- */
.page-news .news-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(44px, 7vw, 92px) 0 clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.42;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  pointer-events: none;
}

.page-news .news-hero__crumb {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-news .news-hero__eyebrow {
  margin: 0 0 14px;
}

.page-news .news-hero h1 {
  margin: 0 0 22px;
  max-width: 15ch;
  font-size: clamp(30px, 6vw, 58px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.015em;
}

.page-news .news-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--text);
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  font-size: 12.5px;
  color: var(--muted);
}

.page-news .news-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-news .news-hero__meta b {
  font-size: 19px;
  font-weight: 700;
  color: var(--mint);
}

/* ---------- 主体栅格 ---------- */
.page-news .news-body {
  padding: var(--news-gap) 0 clamp(48px, 8vw, 96px);
}

.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
}

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

/* ---------- 头条观察 ---------- */
.page-news .lead-story {
  position: relative;
}

.page-news .lead-story__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 93%, 0 100%);
}

.page-news .lead-story__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: brightness(0.6) saturate(0.85);
}

.page-news .lead-story__media::after {
  content: "";
  position: absolute;
  inset: -22% -8% -8%;
  background: linear-gradient(186deg, rgba(10, 26, 47, 0) 36%, rgba(10, 26, 47, 0.92) 86%);
  transform: rotate(-6deg);
  transform-origin: 0 100%;
  pointer-events: none;
}

.page-news .lead-story__media::before {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  top: 56%;
  height: 1px;
  z-index: 1;
  background: linear-gradient(90deg, transparent, var(--mint), transparent);
  transform: rotate(-6deg);
  opacity: 0.55;
  pointer-events: none;
}

.page-news .lead-story__panel {
  position: relative;
  z-index: 2;
  margin: calc(-1 * clamp(30px, 5vw, 70px)) 0 0;
  padding: clamp(22px, 3.4vw, 38px) clamp(20px, 3.4vw, 36px);
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-left: 4px solid var(--mint);
}

.page-news .lead-story__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-news .lead-story__when {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.page-news .lead-story__panel h2 {
  margin: 14px 0 16px;
  font-size: clamp(25px, 4.4vw, 52px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-news .lead-story__panel p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
  max-width: 68ch;
}

.page-news .lead-figures {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 22px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-news .lead-figures li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-news .lead-figures b {
  font-size: 20px;
  font-weight: 700;
  color: var(--mint);
  letter-spacing: 0.02em;
}

.page-news .lead-figures span {
  font-size: 12.5px;
  color: var(--muted);
}

/* ---------- 条目流 ---------- */
.page-news .entry-feed {
  margin-top: clamp(42px, 6vw, 76px);
}

.page-news .entry-feed__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-news .entry-feed__head h2 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-news .entry-feed__head span {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* ---------- 分类筛选 ---------- */
.page-news .filter-bar {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 10px;
}

.page-news .filter-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-news .filter-chip {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-news .filter-chip:hover {
  color: var(--text);
  border-color: var(--muted);
}

.page-news .filter-input:checked + .filter-chip {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--ink-900);
  font-weight: 700;
}

.page-news .filter-input:focus-visible + .filter-chip {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-news:has(#tf-race:checked) .entry:not([data-cat="race"]),
.page-news:has(#tf-panel:checked) .entry:not([data-cat="panel"]),
.page-news:has(#tf-help:checked) .entry:not([data-cat="help"]),
.page-news:has(#tf-partner:checked) .entry:not([data-cat="partner"]) {
  display: none;
}

/* ---------- 单条条目 ---------- */
.page-news .entry {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding: 20px 14px 20px 18px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s var(--ease);
}

.page-news .entry:hover {
  background: rgba(22, 50, 75, 0.5);
}

.page-news .entry__strip {
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  background: var(--deep-muted);
  transition: width 0.18s var(--ease);
}

.page-news .entry:hover .entry__strip {
  width: 6px;
}

.page-news .entry--race .entry__strip {
  background: var(--mint);
}

.page-news .entry--panel .entry__strip {
  background: var(--mint-soft);
}

.page-news .entry--help .entry__strip {
  background: var(--amber);
}

.page-news .entry--partner .entry__strip {
  background: var(--deep-muted);
}

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

.page-news .entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px 12px;
  margin-bottom: 9px;
}

.page-news .entry__tag {
  padding: 3px 8px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-news .entry__tag--race {
  color: var(--mint);
}

.page-news .entry__tag--panel {
  color: var(--mint-soft);
}

.page-news .entry__tag--help {
  color: var(--amber);
}

.page-news .entry__tag--partner {
  color: var(--deep-muted);
}

.page-news .entry__when {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.page-news .entry__title {
  margin: 0 0 7px;
  font-size: clamp(16.5px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.45;
}

.page-news .entry__text {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

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

.page-news .entry__thumb img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: brightness(0.82) saturate(0.9);
}

/* ---------- 展开更多 ---------- */
.page-news .more-entries {
  margin-top: 8px;
}

.page-news .more-entries summary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  padding: 9px 16px;
  border: 1px dashed var(--line);
  color: var(--mint);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  cursor: pointer;
  list-style: none;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-news .more-entries summary::-webkit-details-marker {
  display: none;
}

.page-news .more-entries summary::after {
  content: "+";
  font-size: 14px;
  line-height: 1;
  transition: transform 0.2s var(--ease);
}

.page-news .more-entries[open] summary::after {
  transform: rotate(45deg);
}

.page-news .more-entries summary:hover {
  border-color: var(--mint);
  background: rgba(0, 240, 192, 0.08);
}

.page-news .more-entries summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ---------- 侧栏 ---------- */
.page-news .news-aside {
  display: flex;
  flex-direction: column;
  gap: 22px;
  min-width: 0;
}

.page-news .news-aside__fig {
  margin: 0;
  border: 1px solid var(--line);
}

.page-news .archive {
  padding: 20px;
  background: var(--panel);
  border-top: 2px solid var(--mint);
}

.page-news .archive__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-news .archive__lead {
  margin: 0 0 16px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

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

.page-news .archive__item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 3px 10px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
}

.page-news .archive__no {
  font-size: 12px;
  color: var(--mint);
  letter-spacing: 0.02em;
}

.page-news .archive__name {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .archive__digest {
  grid-column: 2;
  font-size: 12px;
  line-height: 1.62;
  color: var(--deep-muted);
}

.page-news .archive__more {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .aside-cta {
  padding: 20px;
  border: 1px solid var(--amber);
  background: rgba(255, 138, 61, 0.08);
}

.page-news .aside-cta p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text);
}

/* ---------- 选题来源 ---------- */
.page-news .tip-source {
  padding: clamp(36px, 6vw, 76px) 0;
  background: var(--ink-850);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .tip-source__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-news .tip-source__intro h2 {
  margin: 14px 0 16px;
  font-size: clamp(23px, 3.4vw, 36px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 18ch;
}

.page-news .tip-source__intro p {
  margin: 0 0 12px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.page-news .tip-source__note {
  font-size: 13.5px;
  color: var(--muted);
}

.page-news .tip-source__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .tip-source__item {
  display: flex;
  gap: 12px;
  padding: 15px 16px;
  background: var(--card);
  border-left: 3px solid var(--amber);
}

.page-news .tip-source__num {
  flex: none;
  padding-top: 2px;
  font-size: 12px;
  color: var(--amber-soft);
  letter-spacing: 0.04em;
}

.page-news .tip-source__text h3 {
  margin: 0 0 5px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.page-news .tip-source__text p {
  margin: 0 0 8px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-news .tip-source__text .link {
  font-size: 13px;
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 420px) {
  .page-news .news-hero h1 {
    max-width: none;
    font-size: 28px;
  }

  .page-news .lead-story__panel h2 {
    font-size: 23px;
  }

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

  .page-news .archive__digest {
    grid-column: 1;
  }
}

/* ---------- 中屏：条目左右分栏 ---------- */
@media (min-width: 720px) {
  .page-news .entry {
    grid-template-columns: minmax(0, 1fr) 168px;
    align-items: start;
    padding: 22px 16px 22px 22px;
  }

  .page-news .entry__strip {
    top: 22px;
    bottom: 22px;
  }

  .page-news .entry__thumb {
    grid-column: 2;
  }
}

@media (min-width: 860px) {
  .page-news .tip-source__grid {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 52px;
    align-items: start;
  }
}

/* ---------- 桌面：正文 + 固定侧栏 ---------- */
@media (min-width: 1024px) {
  .page-news .news-layout {
    grid-template-columns: minmax(0, 1fr) var(--news-aside-w);
    align-items: start;
  }

  .page-news .news-aside {
    position: sticky;
    top: 88px;
  }

  .page-news .lead-story__panel {
    margin-right: clamp(0px, 5vw, 64px);
  }

  .page-news .entry__thumb {
    width: 100%;
  }
}

@media (min-width: 1320px) {
  .page-news {
    --news-aside-w: 360px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .entry,
  .page-news .entry__strip,
  .page-news .filter-chip,
  .page-news .more-entries summary,
  .page-news .more-entries summary::after {
    transition: none;
  }
}
<<<END>>>