.page-news {
  --pn-line: rgba(30, 58, 90, 0.6);
  --pn-line-soft: rgba(30, 58, 90, 0.38);
  --pn-card: rgba(13, 36, 64, 0.94);
  --pn-card-2: rgba(10, 29, 51, 0.94);
  --pn-cyan-soft: rgba(22, 224, 212, 0.14);
  color: var(--c-mist);
  background: var(--c-deep);
}

/* ---------- 首屏 ---------- */

.page-news .pulse-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(26px, 4.6vw, 58px) 0 clamp(24px, 3.6vw, 46px);
  border-bottom: 1px solid var(--pn-line);
  background:
    radial-gradient(118% 88% at 86% -6%, rgba(22, 224, 212, 0.17), transparent 60%),
    radial-gradient(80% 70% at 2% 112%, rgba(90, 99, 255, 0.13), transparent 62%),
    linear-gradient(180deg, #061527 0%, #0a1d33 100%);
}

.page-news .pulse-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(30, 58, 90, 0.34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 90, 0.34) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(122% 92% at 72% 0%, #000 0%, transparent 78%);
  mask-image: radial-gradient(122% 92% at 72% 0%, #000 0%, transparent 78%);
  pointer-events: none;
}

.page-news .pulse-hero .breadcrumb {
  margin-bottom: 8px;
  font-size: 13px;
}

.page-news .pulse-hero .breadcrumb a {
  color: var(--c-steel);
  text-decoration: none;
  transition: color 200ms var(--ease-out);
}

.page-news .pulse-hero .breadcrumb a:hover,
.page-news .pulse-hero .breadcrumb a:focus-visible {
  color: var(--c-cyan);
}

.page-news .eyebrow {
  margin: 14px 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-news .pulse-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(27px, 4.6vw, 52px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--c-white);
}

.page-news .pulse-hero h1::after {
  content: "";
  display: block;
  width: 78px;
  height: 3px;
  margin-top: 18px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-cyan), rgba(22, 224, 212, 0));
}

.page-news .pulse-hero .lede {
  max-width: 60ch;
  margin: 16px 0 0;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.78;
  color: var(--c-mist);
}

.page-news .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 720px) {
  .page-news .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }
}

.page-news .hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 13px;
  border: 1px solid var(--pn-line);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(13, 36, 64, 0.82), rgba(6, 21, 39, 0.72));
}

.page-news .hero-stats .num {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-cyan);
}

.page-news .hs-label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--c-steel);
}

/* ---------- 看板布局 ---------- */

.page-news .pulse-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: clamp(28px, 4.4vw, 54px) 0 clamp(40px, 6vw, 72px);
}

@media (min-width: 1000px) {
  .page-news .pulse-board {
    grid-template-columns: 234px minmax(0, 1fr);
    gap: 46px;
  }
}

.page-news .pn-rail {
  padding: 16px;
  border: 1px solid var(--pn-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(13, 36, 64, 0.76), rgba(6, 21, 39, 0.62));
}

@media (min-width: 1000px) {
  .page-news .pn-rail {
    position: sticky;
    top: 106px;
    align-self: start;
  }
}

.page-news .pn-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

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

@media (min-width: 1000px) {
  .page-news .pn-rail-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }
}

.page-news .pn-rail-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--c-mist);
  text-decoration: none;
  transition: background 240ms var(--ease-out), border-color 240ms var(--ease-out), color 240ms var(--ease-out);
}

.page-news .pn-rail-link:hover,
.page-news .pn-rail-link:focus-visible {
  background: var(--pn-cyan-soft);
  border-color: rgba(22, 224, 212, 0.4);
  color: var(--c-cyan);
}

.page-news .pn-rail-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-steel);
  transition: color 240ms var(--ease-out);
}

.page-news .pn-rail-link:hover .pn-rail-index {
  color: var(--c-cyan);
}

.page-news .pn-rail-note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--pn-line-soft);
}

.page-news .pn-rail-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--c-steel);
}

.page-news .pn-rail-note .pn-rail-note-title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-steel);
}

/* ---------- 条目流 ---------- */

.page-news .stream {
  display: flex;
  flex-direction: column;
  gap: clamp(30px, 4vw, 52px);
  min-width: 0;
}

.page-news .stream-block {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-news .block-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--pn-line);
}

.page-news .block-head::before {
  content: "";
  flex: none;
  width: 22px;
  height: 8px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-cyan), rgba(22, 224, 212, 0.12));
}

.page-news .block-title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--c-white);
}

.page-news .pn-media {
  margin: 0 0 18px;
  border: 1px solid var(--pn-line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--c-ink-2);
}

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

.page-news .pn-media .media-caption {
  padding: 8px 12px;
  border-top: 1px solid var(--pn-line-soft);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-steel);
}

/* ---------- 折叠条目 ---------- */

.page-news .pulse-item {
  position: relative;
  margin: 0 0 8px;
  border: 1px solid var(--pn-line);
  border-radius: 10px;
  background: linear-gradient(180deg, var(--pn-card), var(--pn-card-2));
  transition: border-color 220ms var(--ease-out);
}

.page-news .pulse-item::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  border-radius: 10px 10px 0 0;
  background: linear-gradient(90deg, var(--c-cyan), rgba(22, 224, 212, 0));
  opacity: 0;
  transition: opacity 220ms var(--ease-out);
}

.page-news .pulse-item:hover {
  border-color: rgba(22, 224, 212, 0.42);
}

.page-news .pulse-item:hover::before,
.page-news .pulse-item[open]::before {
  opacity: 1;
}

.page-news .pulse-item--top {
  border-color: rgba(255, 138, 60, 0.5);
  animation: pn-breathe 3.6s ease-in-out infinite;
}

.page-news .pulse-item--top::before {
  background: linear-gradient(90deg, var(--c-orange), rgba(255, 138, 60, 0));
  opacity: 1;
}

.page-news .pulse-item > summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 13px 15px;
  min-width: 0;
  cursor: pointer;
  list-style: none;
}

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

.page-news .pulse-item > summary::marker {
  content: none;
}

.page-news .pulse-item > summary::after {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  margin-left: 2px;
  border-right: 1.6px solid var(--c-steel);
  border-bottom: 1.6px solid var(--c-steel);
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform 180ms var(--ease-out), border-color 220ms var(--ease-out);
}

.page-news .pulse-item[open] > summary::after {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--c-cyan);
}

.page-news .cat-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.page-news .cat-dot--update {
  background: var(--c-cyan);
  box-shadow: 0 0 8px rgba(22, 224, 212, 0.55);
}

.page-news .cat-dot--feature {
  background: var(--c-violet);
  box-shadow: 0 0 8px rgba(90, 99, 255, 0.5);
}

.page-news .cat-dot--note {
  background: var(--c-green);
  box-shadow: 0 0 8px rgba(125, 240, 106, 0.45);
}

.page-news .cat-dot--tip {
  background: var(--c-orange);
  box-shadow: 0 0 8px rgba(255, 138, 60, 0.45);
}

.page-news .item-title {
  flex: 1 1 220px;
  min-width: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-mist);
  transition: color 220ms var(--ease-out);
}

.page-news .pulse-item[open] .item-title,
.page-news .pulse-item:hover .item-title {
  color: var(--c-white);
}

.page-news .item-ver {
  flex: none;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
  background: rgba(22, 224, 212, 0.1);
}

.page-news .pulse-item .tag {
  flex: none;
}

.page-news .spark {
  display: none;
}

@media (min-width: 720px) {
  .page-news .spark {
    display: block;
    flex: none;
    width: 62px;
    height: 22px;
  }
}

.page-news .item-detail {
  padding: 12px 15px 15px;
  border-top: 1px solid var(--pn-line-soft);
  animation: pn-fade 200ms var(--ease-out);
}

.page-news .item-detail p {
  max-width: 64ch;
  margin: 0 0 9px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-steel);
}

.page-news .item-detail p:last-child {
  margin-bottom: 0;
}

.page-news .item-detail a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(22, 224, 212, 0.35);
  padding-bottom: 1px;
  transition: border-color 220ms var(--ease-out);
}

.page-news .item-detail a:hover,
.page-news .item-detail a:focus-visible {
  border-color: var(--c-cyan);
}

/* ---------- 订阅与反馈 ---------- */

.page-news .follow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 760px) {
  .page-news .follow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-news .follow-card {
  padding: 18px;
  border: 1px solid var(--pn-line);
  border-radius: 10px;
  background: linear-gradient(180deg, var(--pn-card), var(--pn-card-2));
}

.page-news .follow-card--accent {
  border-color: rgba(22, 224, 212, 0.36);
  background: linear-gradient(180deg, rgba(22, 224, 212, 0.09), rgba(13, 36, 64, 0.94));
}

.page-news .follow-card h3 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-white);
}

.page-news .follow-card p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-steel);
}

.page-news .follow-card p:last-child {
  margin-bottom: 0;
}

/* ---------- 动效 ---------- */

@keyframes pn-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes pn-breathe {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 138, 60, 0);
  }
  50% {
    box-shadow: 0 0 0 3px rgba(255, 138, 60, 0.13);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .pulse-item--top {
    animation: none;
  }
  .page-news .item-detail {
    animation: none;
  }
}