.page-news {
  background: var(--ink-900);
  color: var(--paper-100);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-news .breadcrumb {
  padding-block: 18px 0;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(20px, 3vw, 40px) 0 clamp(32px, 5vw, 64px);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(58% 46% at 84% 4%, rgba(124, 107, 255, 0.22), transparent 70%),
    radial-gradient(42% 40% at 4% 92%, rgba(43, 245, 192, 0.12), transparent 72%),
    repeating-linear-gradient(112deg, rgba(30, 42, 68, 0.9) 0 1px, transparent 1px 72px);
}

.page-news .news-hero-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  min-width: 0;
}

.page-news .news-h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 8vw, 4.8rem);
  line-height: 0.96;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-news .news-h1-hl {
  display: inline-block;
  color: var(--sig-400);
}

.page-news .news-hero-text {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--haze-400);
}

.page-news .news-hero-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 头条板 ---------- */
.page-news .headline-board {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-news .headline-main {
  position: relative;
  display: grid;
  gap: 18px;
  min-width: 0;
  padding: clamp(16px, 2.4vw, 24px);
  border-left: 3px solid var(--sig-400);
  background: linear-gradient(155deg, rgba(18, 28, 51, 0.95), rgba(10, 17, 34, 0.85));
  box-shadow: 0 18px 40px -28px rgba(0, 0, 0, 0.9);
}

.page-news .headline-main::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88px;
  height: 2px;
  background: var(--sig-400);
}

.page-news .headline-thumb {
  overflow: hidden;
  border: 1px solid var(--line-500);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-news .headline-thumb img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-news .headline-copy {
  min-width: 0;
}

.page-news .headline-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.page-news .headline-phase {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--haze-400);
}

.page-news .headline-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  line-height: 1.12;
  color: var(--paper-100);
}

.page-news .headline-text {
  margin: 10px 0 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--haze-400);
}

.page-news .headline-side {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-news .headline-mini {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--line-500);
  border-left: 3px solid var(--act-400);
  background: rgba(10, 17, 34, 0.7);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-news .headline-mini:nth-child(2) {
  border-left-color: var(--violet-500);
}

.page-news .headline-mini:hover {
  background: rgba(18, 28, 51, 0.92);
  border-color: var(--line-500);
  border-left-color: var(--sig-400);
}

.page-news .mini-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper-100);
}

.page-news .mini-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--haze-400);
}

/* ---------- 分类标签 ---------- */
.page-news .news-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.1em;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.page-news .news-tag--update {
  color: var(--sig-400);
  background: rgba(43, 245, 192, 0.08);
}

.page-news .news-tag--column {
  color: var(--act-400);
  background: rgba(255, 138, 61, 0.08);
}

.page-news .news-tag--watch {
  color: var(--violet-500);
  background: rgba(124, 107, 255, 0.1);
}

.page-news .news-tag--topic {
  color: var(--cream-050);
  background: rgba(243, 239, 230, 0.08);
}

/* ---------- 条目流 ---------- */
.page-news .news-feed {
  padding-block: clamp(32px, 5vw, 64px) clamp(32px, 5vw, 56px);
}

.page-news .feed-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  min-width: 0;
}

.page-news .feed-index {
  padding: 16px;
  border: 1px solid var(--line-500);
  border-top: 2px solid var(--sig-400);
  background: rgba(10, 17, 34, 0.6);
}

.page-news .feed-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--haze-400);
}

.page-news .feed-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .feed-index-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px;
  font-size: 0.95rem;
  color: var(--paper-100);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-news .feed-index-list a:hover,
.page-news .feed-index-list a:focus-visible {
  background: rgba(43, 245, 192, 0.08);
  border-left-color: var(--sig-400);
  color: var(--sig-400);
}

.page-news .idx-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--sig-700);
}

.page-news .feed-index-note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-500);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--haze-400);
}

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

.page-news .feed-head {
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-news .feed-group {
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line-500);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-news .feed-group + .feed-group {
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-news .feed-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 12px 18px;
  margin-bottom: 14px;
}

.page-news .feed-group-num {
  flex: 0 0 auto;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--sig-400);
  border: 1px solid var(--sig-700);
}

.page-news .feed-group-titles {
  flex: 1 1 220px;
  min-width: 0;
}

.page-news .feed-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  line-height: 1.15;
  color: var(--paper-100);
}

.page-news .feed-group-desc {
  margin: 4px 0 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--haze-400);
}

.page-news .feed-group-media {
  flex: 0 0 auto;
  width: 150px;
  max-width: 42%;
  overflow: hidden;
  border: 1px solid var(--line-500);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-news .feed-group-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-news .topic-banner {
  margin-bottom: 18px;
  overflow: hidden;
  border: 1px solid var(--line-500);
  border-left: 3px solid var(--cream-050);
}

.page-news .topic-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 条目行 ---------- */
.page-news .story-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .story-item + .story-item {
  border-top: 1px solid var(--line-500);
}

.page-news .story-item details {
  display: block;
}

.page-news .story-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 15px 8px 15px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.18s var(--ease);
}

.page-news .story-item summary::-webkit-details-marker {
  display: none;
}

.page-news .story-item summary::marker {
  content: "";
}

.page-news .story-item summary:hover {
  background-color: rgba(43, 245, 192, 0.05);
}

.page-news .story-num {
  flex: 0 0 auto;
  min-width: 20px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--sig-700);
}

.page-news .story-title {
  flex: 1 1 260px;
  min-width: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper-100);
  transition: color 0.18s var(--ease);
}

.page-news .story-item summary:hover .story-title {
  color: var(--sig-400);
}

.page-news .story-phase {
  flex: 0 0 auto;
  margin-left: auto;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--haze-400);
  border: 1px solid var(--line-500);
  white-space: nowrap;
}

.page-news .story-item summary::after {
  content: "";
  flex: 0 0 auto;
  align-self: center;
  width: 7px;
  height: 7px;
  margin-left: 2px;
  border-right: 1.5px solid var(--haze-400);
  border-bottom: 1.5px solid var(--haze-400);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-news .story-item details[open] summary::after {
  transform: rotate(-135deg);
  border-color: var(--sig-400);
}

.page-news .story-body {
  padding: 0 8px 18px 38px;
}

.page-news .story-body p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--haze-400);
}

/* ---------- 回访节奏 ---------- */
.page-news .news-rhythm {
  padding-block: clamp(36px, 5vw, 64px);
  border-top: 1px solid var(--line-500);
  border-bottom: 1px solid var(--line-500);
  background: linear-gradient(180deg, rgba(10, 17, 34, 0.9), rgba(5, 9, 18, 0.9));
}

.page-news .rhythm-grid {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
}

.page-news .rhythm-card {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: clamp(18px, 3vw, 24px);
  background: var(--ink-900);
}

.page-news .rhythm-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--haze-400);
}

.page-news .rhythm-value {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3.4vw, 1.9rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--sig-400);
}

.page-news .rhythm-text {
  margin: 4px 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--haze-400);
}

/* ---------- 往期归档 ---------- */
.page-news .news-archive {
  padding-block: clamp(36px, 5vw, 64px) 0;
}

.page-news .archive-list {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .archive-item {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 16px 18px;
  border: 1px solid var(--line-500);
  border-left: 3px solid var(--violet-500);
  background: rgba(10, 17, 34, 0.65);
}

.page-news .archive-stage {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cream-050);
}

.page-news .archive-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--haze-400);
}

.page-news .archive-link {
  justify-self: start;
  margin-top: 4px;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--sig-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 192, 0.35);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-news .archive-link:hover,
.page-news .archive-link:focus-visible {
  border-bottom-color: var(--sig-400);
  color: var(--paper-100);
}

.page-news .archive-foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--haze-400);
}

.page-news .archive-foot a {
  color: var(--sig-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (max-width: 480px) {
  .page-news .story-body {
    padding-left: 8px;
  }

  .page-news .story-phase {
    margin-left: 0;
  }

  .page-news .feed-group-media {
    width: 118px;
  }
}

@media (min-width: 760px) {
  .page-news .headline-main {
    grid-template-columns: minmax(0, 236px) minmax(0, 1fr);
    align-items: center;
  }

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

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

@media (min-width: 960px) {
  .page-news .news-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-news .feed-grid {
    grid-template-columns: 232px minmax(0, 1fr);
  }

  .page-news .feed-index {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-news .rhythm-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 1200px) {
  .page-news .feed-group-media {
    width: 190px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .headline-mini,
  .page-news .story-item summary,
  .page-news .story-title,
  .page-news .story-item summary::after,
  .page-news .feed-index-list a,
  .page-news .archive-link {
    transition: none;
  }
}