.page-news {
  --news-gap: clamp(24px, 4vw, 60px);
  --news-line: rgba(11, 58, 98, .12);
  --news-rail-w: minmax(280px, 336px);
  background: var(--af-mist);
  color: var(--af-ink-800);
  font-family: var(--af-font);
  overflow-x: hidden;
}

/* ---------- 报头 ---------- */
.page-news .news-masthead {
  position: relative;
  padding: clamp(30px, 6vw, 72px) 0 clamp(20px, 3vw, 32px);
  background: linear-gradient(180deg, var(--af-blue-100) 0%, rgba(232, 241, 248, 0) 100%);
  overflow: hidden;
}

.page-news .news-masthead::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -90px;
  width: clamp(200px, 32vw, 440px);
  height: clamp(200px, 32vw, 440px);
  background: var(--af-coral-200);
  border-radius: 44% 56% 52% 48% / 50% 44% 56% 50%;
  opacity: .6;
  pointer-events: none;
}

.page-news .news-masthead__inner {
  position: relative;
  z-index: 1;
}

.page-news .news-masthead__kicker {
  margin: 18px 0 6px;
  color: var(--af-blue-500);
}

.page-news .news-masthead__title {
  margin: 0 0 16px;
  color: var(--af-blue-900);
  letter-spacing: -0.035em;
  line-height: .98;
}

.page-news .news-masthead__lede {
  max-width: 62ch;
  color: var(--af-ink-800);
}

.page-news .news-masthead__rail {
  height: 5px;
  margin-top: clamp(22px, 4vw, 40px);
  background: linear-gradient(90deg, var(--af-blue-700) 0%, var(--af-blue-500) 34%, var(--af-mint-500) 64%, var(--af-coral-600) 100%);
}

/* ---------- 头条观察 ---------- */
.page-news .news-lead {
  padding: clamp(28px, 5vw, 60px) 0 clamp(8px, 2vw, 16px);
}

.page-news .news-lead__card {
  border-radius: var(--af-radius);
  overflow: hidden;
  background: var(--af-blue-900);
  box-shadow: 0 30px 70px -40px rgba(7, 40, 74, .65);
}

.page-news .news-lead__media {
  position: relative;
  margin: 0;
  display: block;
}

.page-news .news-lead__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-news .news-lead__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(178deg, rgba(7, 40, 74, .10) 22%, rgba(7, 40, 74, .62) 62%, rgba(7, 40, 74, .93) 100%);
}

.page-news .news-lead__overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: clamp(20px, 4vw, 48px);
  display: grid;
  gap: 10px;
}

.page-news .news-lead__flag {
  color: var(--af-coral-200);
}

.page-news .news-lead__title {
  margin: 0;
  color: #fff;
  font-size: clamp(24px, 3.8vw, 44px);
  line-height: 1.14;
  max-width: 24ch;
  font-weight: 700;
}

.page-news .news-lead__body {
  padding: clamp(22px, 4vw, 46px);
  display: grid;
  gap: 16px;
}

.page-news .news-lead__body .af-body {
  color: rgba(255, 255, 255, .85);
  margin: 0;
}

.page-news .news-lead__points {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, .85);
}

.page-news .news-lead__points li::marker {
  color: var(--af-mint-500);
}

/* ---------- 双列主体 ---------- */
.page-news .news-layout {
  display: grid;
  gap: var(--news-gap);
  padding: clamp(28px, 5vw, 64px) 0 clamp(20px, 4vw, 48px);
}

.page-news .news-rail {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  align-content: start;
}

.page-news .news-index__title,
.page-news .news-head__title,
.page-news .news-brief__title {
  margin: 8px 0 0;
  color: var(--af-blue-900);
}

.page-news .news-head {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-news .news-head__lede {
  margin: 10px 0 0;
  max-width: 54ch;
}

/* 栏目索引 */
.page-news .news-index__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .news-index__item {
  position: relative;
  padding: 16px 18px 16px 20px;
  background: #fff;
  border-radius: 14px;
  border-left: 4px solid var(--af-blue-500);
  box-shadow: 0 14px 30px -26px rgba(7, 40, 74, .6);
  transition: transform .3s var(--af-ease), border-color .3s var(--af-ease);
}

.page-news .news-index__item:nth-child(2) {
  border-left-color: var(--af-coral-600);
}

.page-news .news-index__item:nth-child(3) {
  border-left-color: var(--af-mint-500);
}

.page-news .news-index__item:nth-child(4) {
  border-left-color: var(--af-gold-500);
}

.page-news .news-index__item:hover {
  transform: translateX(4px);
}

.page-news .news-index__no {
  color: var(--af-stone-600);
}

.page-news .news-index__name {
  margin: 4px 0 6px;
  font-size: 19px;
  line-height: 1.3;
  color: var(--af-blue-900);
}

.page-news .news-index__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--af-stone-600);
}

.page-news .news-index__meta {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--af-blue-700);
}

.page-news .news-index__meta .af-num {
  color: var(--af-coral-600);
}

/* 数据简报 */
.page-news .news-brief {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--af-radius);
  background: linear-gradient(150deg, var(--af-blue-900) 0%, var(--af-blue-700) 100%);
  color: #fff;
  overflow: hidden;
}

.page-news .news-brief::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  background: var(--af-coral-600);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  opacity: .9;
}

.page-news .news-brief__kicker {
  color: var(--af-coral-200);
  position: relative;
}

.page-news .news-brief__title {
  color: #fff;
  position: relative;
}

.page-news .news-brief__list {
  margin: 20px 0 0;
  display: grid;
  gap: 16px;
}

.page-news .news-brief__rowhead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-news .news-brief__label {
  font-size: 13px;
  color: rgba(255, 255, 255, .74);
}

.page-news .news-brief__value {
  font-family: var(--af-mono);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -.02em;
  color: #fff;
}

.page-news .news-brief__note {
  margin: 6px 0 0;
  font-size: 12px;
  color: rgba(255, 255, 255, .6);
}

.page-news .news-meter {
  margin-top: 8px;
  height: 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .16);
  overflow: hidden;
}

.page-news .news-meter i {
  display: block;
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--af-mint-500) 0%, var(--af-coral-600) 100%);
}

.page-news .news-brief__media {
  margin: 22px 0 0;
}

.page-news .news-brief__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 12px;
}

/* 条目列表 */
.page-news .news-feed {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--news-line);
}

.page-news .news-feed__item {
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-bottom: 1px solid var(--news-line);
  display: grid;
  gap: 8px;
}

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

.page-news .news-feed__meta .af-index {
  color: var(--af-blue-700);
}

.page-news .news-feed__title {
  margin: 0;
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.4;
  color: var(--af-blue-900);
  font-weight: 700;
  transition: color .25s var(--af-ease);
}

.page-news .news-feed__item:hover .news-feed__title {
  color: var(--af-blue-500);
}

.page-news .news-feed__excerpt {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--af-stone-600);
  max-width: 68ch;
}

/* ---------- 专题系列 ---------- */
.page-news .news-topics {
  padding: clamp(36px, 6vw, 78px) 0;
  background: var(--af-blue-100);
}

.page-news .news-topics__viewport {
  overflow: hidden;
}

.page-news .news-topics__track {
  list-style: none;
  margin: 0;
  padding: 4px var(--af-gutter) 26px;
  display: flex;
  gap: clamp(14px, 2vw, 24px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  cursor: grab;
  -webkit-overflow-scrolling: touch;
}

.page-news .news-topics__track[data-dragging] {
  cursor: grabbing;
}

.page-news .news-topics__card {
  flex: 0 0 min(320px, 80vw);
  scroll-snap-align: start;
  background: #fff;
  border-radius: var(--af-radius);
  padding: clamp(20px, 2.6vw, 28px);
  display: grid;
  gap: 12px;
  align-content: start;
  box-shadow: 0 20px 44px -34px rgba(7, 40, 74, .7);
  border-top: 4px solid var(--af-mint-500);
}

.page-news .news-topics__card:nth-child(2) {
  border-top-color: var(--af-coral-600);
}

.page-news .news-topics__card:nth-child(3) {
  border-top-color: var(--af-gold-500);
}

.page-news .news-topics__card--wide {
  flex: 0 0 min(500px, 88vw);
  grid-template-rows: auto 1fr;
}

.page-news .news-topics__media {
  margin: 0 0 4px;
}

.page-news .news-topics__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 12px;
}

.page-news .news-topics__no {
  color: var(--af-stone-600);
}

.page-news .news-topics__name {
  margin: 6px 0 8px;
  font-size: 22px;
  line-height: 1.25;
  color: var(--af-blue-900);
}

.page-news .news-topics__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--af-ink-800);
}

.page-news .news-topics__order {
  margin: 12px 0 0;
  font-family: var(--af-mono);
  font-size: 12px;
  letter-spacing: -.01em;
  color: var(--af-coral-600);
}

/* ---------- 投稿与线索 ---------- */
.page-news .news-submit {
  position: relative;
  padding: clamp(40px, 6vw, 88px) 0 clamp(48px, 7vw, 96px);
  background: linear-gradient(155deg, var(--af-blue-900) 0%, var(--af-blue-700) 100%);
  color: #fff;
  overflow: hidden;
}

.page-news .news-submit::after {
  content: "";
  position: absolute;
  bottom: -120px;
  left: -80px;
  width: clamp(220px, 34vw, 420px);
  height: clamp(220px, 34vw, 420px);
  border-radius: 50%;
  background: rgba(47, 183, 154, .18);
  pointer-events: none;
}

.page-news .news-submit__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 56px);
  align-items: center;
}

.page-news .news-submit__kicker {
  color: var(--af-coral-200);
}

.page-news .news-submit__title {
  margin: 8px 0 16px;
  color: #fff;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.2;
  max-width: 24ch;
}

.page-news .news-submit__body {
  margin: 0 0 18px;
  color: rgba(255, 255, 255, .85);
  max-width: 60ch;
}

.page-news .news-submit__list {
  margin: 0 0 26px;
  color: rgba(255, 255, 255, .85);
}

.page-news .news-submit__list li::marker {
  color: var(--af-coral-600);
}

.page-news .news-submit__cta {
  display: inline-flex;
}

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

.page-news .news-submit__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  border-radius: var(--af-radius);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .news-submit__inner {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
  }
}

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

  .page-news .news-topics__track {
    padding-left: max(var(--af-gutter), calc((100vw - var(--af-shell)) / 2 + var(--af-gutter)));
    padding-right: max(var(--af-gutter), calc((100vw - var(--af-shell)) / 2 + var(--af-gutter)));
  }
}

@media (max-width: 699px) {
  .page-news .news-masthead::after {
    width: 180px;
    height: 180px;
    top: -50px;
    right: -60px;
  }

  .page-news .news-lead__title {
    max-width: none;
  }

  .page-news .news-feed__excerpt {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-index__item,
  .page-news .news-feed__title {
    transition: none;
  }

  .page-news .news-index__item:hover {
    transform: none;
  }
}