.page-news {
  --news-gap: clamp(18px, 2.6vw, 32px);
  --news-node: 16px;
  --news-rail: clamp(34px, 3.4vw, 48px);
  overflow-x: hidden;
}

/* ---------- 封面 ---------- */

.page-news .news-cover {
  position: relative;
  padding: clamp(26px, 5vw, 60px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 2px solid var(--line);
  background: var(--bg);
}

.page-news .news-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 92% at 84% -6%, rgba(200, 255, 60, 0.1), transparent 56%),
    radial-gradient(86% 76% at 6% 108%, rgba(49, 217, 255, 0.09), transparent 62%),
    linear-gradient(180deg, rgba(17, 26, 35, 0.85), transparent 42%);
}

.page-news .news-cover > .shell {
  position: relative;
  z-index: 1;
}

.page-news .news-cover .breadcrumbs {
  margin-bottom: clamp(20px, 3.4vw, 38px);
}

.page-news .news-cover__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

.page-news .news-cover__rail {
  display: grid;
  gap: 12px;
  align-content: start;
  padding-left: 12px;
  border-left: 2px solid var(--accent);
}

.page-news .news-cover__rail .note {
  margin: 0;
}

.page-news .news-cover__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-cover__jump a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-news .news-cover__jump a:hover,
.page-news .news-cover__jump a:focus-visible {
  border-bottom-color: var(--accent-2);
}

.page-news .news-cover__title {
  margin: 0 0 18px;
  line-height: 0.96;
}

.page-news .news-cover__lede {
  max-width: 46ch;
  margin: 0 0 16px;
}

.page-news .news-cover__prose {
  max-width: 52ch;
  margin: 0;
}

.page-news .news-cover__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding-top: clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--line);
}

.page-news .news-fact {
  display: grid;
  gap: 4px;
}

.page-news .news-fact dt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-news .news-fact dd {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

/* ---------- 章节头 ---------- */

.page-news .news-block {
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-news .news-block__head {
  max-width: 68ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-news .news-block__head .section__num {
  margin: 0 0 10px;
}

.page-news .news-block__title {
  margin: 0 0 14px;
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--text);
}

.page-news .news-block__lede {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
}

/* ---------- 标签地图 ---------- */

.page-news .news-tagmap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

.page-news .news-tagcard {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  transition: border-color 260ms var(--ease), box-shadow 260ms var(--ease);
}

.page-news .news-tagcard:hover {
  border-color: var(--accent);
  box-shadow: 6px 6px 0 0 rgba(200, 255, 60, 0.14);
}

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

.page-news .news-tagcard__media .media__img {
  filter: saturate(0.72) contrast(1.06);
}

.page-news .news-tagcard__body {
  display: grid;
  gap: 10px;
}

.page-news .news-tagcard__name {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text);
}

.page-news .news-tagcard__body .prose {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

/* ---------- 标签徽标 ---------- */

.page-news .news-flag {
  display: inline-flex;
  align-items: center;
  align-self: start;
  padding: 3px 10px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  line-height: 1.6;
  white-space: nowrap;
}

.page-news .news-flag--report { color: var(--accent-2); }
.page-news .news-flag--data { color: var(--data); }
.page-news .news-flag--version { color: var(--accent); }
.page-news .news-flag--feature { color: var(--muted); }

/* ---------- 筛选 ---------- */

.page-news .news-filter {
  margin-bottom: clamp(22px, 3.4vw, 34px);
  gap: 8px;
  flex-wrap: wrap;
}

.page-news .news-chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.page-news .news-chip[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- 时间轴列表 ---------- */

.page-news .news-stream {
  position: relative;
  margin: 0;
  padding: 0 0 0 calc(var(--news-rail) * 0.66);
  list-style: none;
  display: grid;
  gap: clamp(16px, 2.2vw, 26px);
}

.page-news .news-stream::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-2), var(--accent) 52%, var(--line));
  opacity: 0.72;
}

.page-news .news-stream__item {
  position: relative;
  padding: clamp(15px, 2vw, 22px);
  border: 1px solid var(--line);
  background: var(--surface);
  transition: transform 260ms var(--ease), border-color 260ms var(--ease), box-shadow 260ms var(--ease);
}

.page-news .news-stream__item:hover,
.page-news .news-stream__item:focus-within {
  transform: translateX(4px);
  border-color: var(--accent-2);
  box-shadow: -6px 0 0 0 rgba(49, 217, 255, 0.18);
}

.page-news .news-stream__item[hidden] {
  display: none;
}

.page-news .news-stream__node {
  position: absolute;
  left: calc(var(--news-rail) * -0.66 + 2px);
  top: 20px;
  width: var(--news-node);
  height: var(--news-node);
  box-sizing: border-box;
  border: 2px solid var(--line);
  background: var(--bg);
  transition: box-shadow 240ms var(--ease);
}

.page-news .news-stream__item:hover .news-stream__node,
.page-news .news-stream__item:focus-within .news-stream__node {
  box-shadow: 0 0 0 4px rgba(200, 255, 60, 0.16);
}

.page-news .news-stream__item[data-tag="report"] .news-stream__node {
  background: #31D9FF;
  border-color: #31D9FF;
}

.page-news .news-stream__item[data-tag="data"] .news-stream__node {
  background: transparent;
  border-color: #FF8B3D;
  border-width: 3px;
}

.page-news .news-stream__item[data-tag="version"] .news-stream__node {
  background: #C8FF3C;
  border-color: #C8FF3C;
}

.page-news .news-stream__item[data-tag="feature"] .news-stream__node {
  width: 14px;
  height: 4px;
  top: 26px;
  background: var(--muted);
  border: 0;
}

.page-news .news-stream__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 12px;
}

.page-news .news-stream__when {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-news .news-stream__title {
  margin: 0 0 10px;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-news .news-stream__summary {
  margin: 0;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .news-stream__trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-news .news-stream__trigger:hover,
.page-news .news-stream__trigger:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.page-news .news-stream__item .accordion__body p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 图例 ---------- */

.page-news .news-legend {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-news .news-legend__axis {
  display: flex;
  justify-content: center;
  padding: 14px 0;
  border: 1px solid var(--line);
  background: var(--bg-alt);
}

.page-news .news-legend__axis svg {
  display: block;
  height: auto;
  max-width: 100%;
}

.page-news .news-legend__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-legend__row {
  display: grid;
  grid-template-columns: 20px minmax(96px, auto) 1fr;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .news-legend__row:first-child {
  border-top: 1px solid var(--line);
}

.page-news .news-swatch {
  width: 14px;
  height: 14px;
  box-sizing: border-box;
}

.page-news .news-swatch--report { background: #31D9FF; }
.page-news .news-swatch--data { border: 3px solid #FF8B3D; }
.page-news .news-swatch--version { background: #C8FF3C; }
.page-news .news-swatch--feature { width: 14px; height: 4px; background: var(--muted); }
.page-news .news-swatch--now { width: 4px; height: 18px; background: var(--text); }

.page-news .news-legend__name {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text);
}

.page-news .news-legend__desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 回访路径 ---------- */

.page-news .news-routes {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

.page-news .news-route {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-top-width: 3px;
  border-top-style: solid;
  background: var(--bg);
}

.page-news .news-route--a { border-top-color: var(--accent-2); }
.page-news .news-route--b { border-top-color: var(--accent); }
.page-news .news-route--c { border-top-color: var(--data); }

.page-news .news-route__tag {
  margin: 0;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-news .news-route__name {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
}

.page-news .news-route .prose {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.page-news .news-route .btn {
  justify-self: start;
  margin-top: 4px;
}

/* ---------- 共建 ---------- */

.page-news .news-contribute {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  padding: clamp(22px, 4vw, 44px);
  border: 2px solid var(--line);
  background:
    linear-gradient(135deg, rgba(200, 255, 60, 0.07), transparent 46%),
    var(--bg-alt);
}

.page-news .news-contribute__text .section__num {
  margin: 0 0 10px;
}

.page-news .news-contribute__text .news-block__title {
  margin-bottom: 14px;
}

.page-news .news-contribute__text .prose {
  margin: 0;
  max-width: 56ch;
  color: var(--muted);
}

.page-news .news-contribute__cta {
  display: grid;
  gap: 14px;
  align-content: center;
}

.page-news .news-contribute__cta .note {
  margin: 0;
}

.page-news .news-contribute__quiet {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 200ms var(--ease);
}

.page-news .news-contribute__quiet:hover,
.page-news .news-contribute__quiet:focus-visible {
  border-bottom-color: var(--accent-2);
}

/* ---------- 桌面栅格 ---------- */

@media (min-width: 768px) {
  .page-news .news-cover__grid {
    grid-template-columns: minmax(150px, 1fr) 2.7fr;
    gap: clamp(28px, 4vw, 56px);
  }

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

  .page-news .news-stream {
    padding-left: var(--news-rail);
  }

  .page-news .news-stream::before {
    left: 11px;
  }

  .page-news .news-stream__node {
    left: calc(var(--news-rail) - 40px);
    left: 4px;
  }

  .page-news .news-legend {
    grid-template-columns: 88px 1fr;
  }
}

@media (min-width: 900px) {
  .page-news .news-tagmap {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-news .news-tagmap__cell--a { grid-column: span 7; }
  .page-news .news-tagmap__cell--b { grid-column: span 5; }
  .page-news .news-tagmap__cell--c { grid-column: span 5; }
  .page-news .news-tagmap__cell--d { grid-column: span 7; }

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

  .page-news .news-contribute {
    grid-template-columns: 1.7fr 1fr;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-news .news-routes .news-route--b {
    transform: translateY(14px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-stream__item,
  .page-news .news-tagcard,
  .page-news .news-stream__node,
  .page-news .news-stream__trigger {
    transition: none;
  }

  .page-news .news-stream__item:hover,
  .page-news .news-stream__item:focus-within,
  .page-news .news-routes .news-route--b {
    transform: none;
  }
}