.page-news {
  background: var(--c-frost);
  color: var(--c-navy);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(24px, 4vw, 46px) 0 clamp(40px, 6vw, 72px);
  overflow: hidden;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -34%;
  right: -16%;
  width: min(72vw, 780px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  pointer-events: none;
  background:
    radial-gradient(circle at 34% 34%, rgba(108, 75, 255, 0.16), transparent 60%),
    radial-gradient(circle at 68% 66%, rgba(33, 216, 206, 0.18), transparent 56%);
}

.page-news .news-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

@media (min-width: 1024px) {
  .page-news .news-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: end;
    gap: clamp(36px, 5vw, 72px);
  }
}

.page-news .news-hero h1 {
  margin: 14px 0 20px;
  max-width: 16em;
  font-size: clamp(30px, 5.4vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-news .news-hero .lede {
  max-width: 62ch;
  margin: 0 0 26px;
  font-size: clamp(15.5px, 1.4vw, 17px);
  line-height: 1.9;
  color: var(--c-slate);
}

.page-news .news-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .news-jump a {
  display: inline-block;
  padding: 10px 16px;
  font-size: 13px;
  line-height: 1;
  color: var(--c-navy);
  text-decoration: none;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-news .news-jump a:hover,
.page-news .news-jump a:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(33, 216, 206, 0.1);
}

.page-news .news-hero__side {
  display: flex;
  gap: clamp(16px, 2vw, 24px);
  align-items: stretch;
  padding: clamp(20px, 2.4vw, 28px);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(222, 234, 248, 0.85), rgba(244, 247, 251, 0.35));
}

.page-news .news-hero__vnote {
  flex: 0 0 auto;
  margin: 0;
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--c-glacier);
}

.page-news .news-facts {
  flex: 1 1 auto;
  display: grid;
  gap: 12px;
  align-content: start;
  margin: 0;
}

.page-news .news-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-news .news-facts__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-news .news-facts dt {
  font-size: 13px;
  color: var(--c-slate);
}

.page-news .news-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-deep-ice);
}

/* ---------- 章节容器 ---------- */
.page-news .news-block {
  padding: clamp(52px, 7vw, 92px) 0;
}

.page-news .news-block + .news-block {
  border-top: 1px solid var(--c-line-soft);
}

.page-news .news-banner,
.page-news .news-compare-figure,
.page-news .news-rail-figure,
.page-news .news-topic-figure {
  margin: clamp(20px, 3vw, 32px) 0 0;
}

.page-news .frost-frame img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .news-intro {
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-news .news-intro p {
  margin: 0;
}

/* ---------- 条目流 ---------- */
.page-news .news-filter {
  margin-top: clamp(22px, 3vw, 32px);
}

.page-news .news-feed {
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-news .feed-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "time tag"
    "main main";
  align-items: center;
  gap: 10px 14px;
  padding: 20px 2px;
  border-bottom: 1px solid var(--c-line-soft);
  transition: box-shadow var(--dur) var(--ease);
}

.page-news .feed-item:hover {
  box-shadow: inset 3px 0 0 var(--c-cyan);
}

.page-news .feed-item__time {
  grid-area: time;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-slate);
  white-space: nowrap;
}

.page-news .feed-item__main {
  grid-area: main;
  min-width: 0;
}

.page-news .feed-item__title {
  margin: 0 0 6px;
  font-size: clamp(16.5px, 1.9vw, 19px);
  line-height: 1.5;
  font-weight: 700;
  transition: color var(--dur) var(--ease);
}

.page-news .feed-item:hover .feed-item__title {
  color: var(--c-glacier);
}

.page-news .feed-item__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-slate);
}

.page-news .feed-tag {
  grid-area: tag;
  justify-self: end;
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  font-size: 12px;
  letter-spacing: 0.1em;
  white-space: nowrap;
  color: var(--c-deep-ice);
  background: var(--c-mist);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

@media (min-width: 860px) {
  .page-news .feed-item {
    grid-template-columns: 128px minmax(0, 1fr) 96px;
    grid-template-areas: "time main tag";
    align-items: start;
    gap: 26px;
    padding: 24px 12px 24px 0;
  }
}

/* ---------- 对照双栏 ---------- */
.page-news .news-segmented {
  margin-top: clamp(22px, 3vw, 32px);
}

.page-news .compare-stack {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-news .compare {
  display: grid;
  gap: 14px;
}

@media (min-width: 900px) {
  .page-news .compare {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(18px, 3vw, 34px);
  }
}

.page-news .compare__side {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-news .compare__ver {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-slate);
}

.page-news .compare__title {
  margin: 0;
  font-size: 17px;
  line-height: 1.5;
  font-weight: 700;
}

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

/* ---------- 专题 ---------- */
.page-news .topic-layout {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 32px);
}

@media (min-width: 900px) {
  .page-news .topic-layout {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }
}

.page-news .topic-list {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-news .topic-item {
  padding: 22px 22px 22px 24px;
  border-radius: var(--r-md);
  border-left: 3px solid var(--c-glacier);
  background: linear-gradient(140deg, rgba(222, 234, 248, 0.72), rgba(244, 247, 251, 0.4));
}

@media (min-width: 900px) {
  .page-news .topic-item:nth-child(2) {
    margin-left: clamp(0px, 3vw, 32px);
  }
  .page-news .topic-item:nth-child(3) {
    margin-left: clamp(0px, 6vw, 64px);
  }
}

.page-news .topic-item__meta {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-slate);
}

.page-news .topic-item__title {
  margin: 0 0 8px;
  font-size: clamp(19px, 2.2vw, 23px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-news .topic-item__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-slate);
}

/* ---------- 现场时间线 ---------- */
.page-news .rail {
  display: flex;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
  padding: 6px 2px 20px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-color: rgba(78, 155, 224, 0.45) transparent;
}

.page-news .rail:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

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

.page-news .rail::-webkit-scrollbar-thumb {
  background: rgba(78, 155, 224, 0.4);
  border-radius: 3px;
}

.page-news .rail__item {
  flex: 0 0 min(86vw, 290px);
  scroll-snap-align: start;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 20px 20px 22px;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-md);
  background: rgba(244, 247, 251, 0.92);
  box-shadow: 0 10px 24px -22px rgba(10, 29, 48, 0.55);
}

.page-news .rail__item:nth-child(even) {
  transform: translateY(10px);
}

.page-news .rail__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-glacier);
}

.page-news .rail__name {
  margin: 0;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 700;
}

.page-news .rail__time {
  margin: 0;
  font-size: 13px;
  color: var(--c-slate);
}

.page-news .rail__link {
  margin: 0;
  padding-top: 10px;
  font-size: 13px;
  color: var(--c-deep-ice);
  border-top: 1px dashed var(--c-line);
}

.page-news .rail__hint {
  margin: 0;
  font-size: 13px;
  color: var(--c-slate);
}

/* ---------- 筛选说明 ---------- */
.page-news .filter-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(20px, 3vw, 32px);
}

@media (min-width: 780px) {
  .page-news .filter-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-news .filter-card:nth-child(2) {
    margin-top: 30px;
  }
  .page-news .filter-card:nth-child(3) {
    margin-top: 60px;
  }
}

.page-news .filter-card {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(222, 234, 248, 0.66), rgba(244, 247, 251, 0.3));
}

.page-news .filter-card__num {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-violet);
}

.page-news .filter-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
}

.page-news .filter-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-slate);
}

/* ---------- 收尾 ---------- */
.page-news .news-callout {
  margin-top: clamp(30px, 4vw, 52px);
}

.page-news .news-callout p {
  margin: 0 0 10px;
}

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

.page-news .news-callout .btn {
  margin-top: 8px;
}

.page-news .news-close {
  margin: clamp(24px, 3vw, 36px) 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-slate);
}

.page-news .news-close a {
  color: var(--c-deep-ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news a:focus-visible,
.page-news button:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-news * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .page-news .rail__item:nth-child(even) {
    transform: none;
  }
}