.page-news {
  --n-gap: clamp(16px, 2.4vw, 28px);
  --n-bar-ver: var(--gold);
  --n-bar-obs: var(--cyan);
  --n-bar-data: var(--cyan);
  --n-bar-doc: var(--magenta);
  color: var(--text);
  font-family: var(--font-sans);
}

.page-news .section-title {
  margin: 6px 0 10px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  font-weight: 700;
}

.page-news .news-sec-head {
  margin-bottom: clamp(20px, 3vw, 34px);
  padding-left: 16px;
  border-left: 2px solid var(--gold);
}

.page-news .news-sec-head__lead {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  position: relative;
  padding: clamp(24px, 4.5vw, 56px) 0 clamp(26px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(61, 224, 208, 0.07), rgba(11, 27, 58, 0) 72%),
    repeating-linear-gradient(90deg, rgba(30, 58, 107, 0.55) 0 1px, transparent 1px 72px);
  background-position: 0 0, 0 0;
}

.page-news .news-hero .breadcrumb {
  margin-bottom: 14px;
}

.page-news .news-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 5.4vw, 62px);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--text);
}

.page-news .news-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-news .news-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 84px;
}

.page-news .news-hero__num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-news .news-hero__lab {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 栏目导览 ---------- */

.page-news .news-guide {
  padding: clamp(34px, 5vw, 68px) 0;
}

.page-news .news-guide__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .news-guide__cell {
  padding: 20px 18px 22px;
  background: var(--ink-deep);
  transition: background 0.25s ease;
}

.page-news .news-guide__cell:hover {
  background: var(--panel);
}

.page-news .news-guide__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-news .news-guide__name {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-news .news-guide__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 更新列表 ---------- */

.page-news .news-stream-sec {
  padding: 0 0 clamp(34px, 5vw, 68px);
}

.page-news .news-stream {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--n-gap);
  align-items: start;
}

.page-news .news-stream__side {
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.page-news .news-stream__side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-news .news-stream__side .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .news-stream__side .filter-btn {
  padding: 7px 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.2;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-news .news-stream__side .filter-btn:hover {
  color: var(--text);
  border-color: var(--cyan);
}

.page-news .news-stream__side .filter-btn[aria-pressed="true"] {
  color: var(--ink-void);
  background: var(--gold);
  border-color: var(--gold);
}

.page-news .news-stream__side-note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .news-stream__items {
  min-width: 0;
}

.page-news .news-item {
  position: relative;
  margin: 0 0 var(--n-gap);
  padding: 18px 16px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: background 0.25s ease;
}

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

.page-news .news-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--n-bar, var(--gold));
}

.page-news .news-item:hover {
  background: #16305d;
}

.page-news .news-item--ver {
  --n-bar: var(--n-bar-ver);
}

.page-news .news-item--obs {
  --n-bar: var(--n-bar-obs);
}

.page-news .news-item--data {
  --n-bar: var(--n-bar-data);
}

.page-news .news-item--doc {
  --n-bar: var(--n-bar-doc);
}

.page-news .news-item--pinned {
  background-image:
    radial-gradient(circle at 88% 12%, rgba(245, 197, 66, 0.14), transparent 62%),
    linear-gradient(rgba(30, 58, 107, 0.42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 107, 0.42) 1px, transparent 1px);
  background-size: 100% 100%, 24px 24px, 24px 24px;
}

.page-news .news-item__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  min-width: 0;
}

.page-news .news-item__body {
  min-width: 0;
}

.page-news .news-item__label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--n-bar, var(--gold));
}

.page-news .news-item__pin {
  padding: 2px 7px;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--ink-void);
  background: var(--magenta);
}

.page-news .news-item__title {
  margin: 9px 0 6px;
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.005em;
  color: var(--text);
}

.page-news .news-item__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .news-item__excerpt {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  max-height: 3.5em;
  overflow: hidden;
  transition: max-height 0.4s ease, color 0.3s ease;
}

.page-news .news-item:hover .news-item__excerpt,
.page-news .news-item:focus-within .news-item__excerpt {
  max-height: 9em;
  color: var(--text);
}

.page-news .news-item__media {
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

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

/* ---------- 版本说明专区（浅色阅读面板） ---------- */

.page-news .news-version {
  padding: 0 0 clamp(34px, 5vw, 68px);
}

.page-news .news-version__panel {
  padding: clamp(22px, 3.4vw, 44px);
}

.page-news .news-version__kicker {
  color: #8a6a10;
}

.page-news .news-version__panel .section-title {
  color: var(--paper-ink);
}

.page-news .news-version__panel .prose {
  color: var(--paper-ink);
}

.page-news .news-version__panel .prose p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.82;
}

.page-news .news-version__panel .prose p:last-child {
  margin-bottom: 0;
}

.page-news .news-version__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 专题带 ---------- */

.page-news .news-series {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 5vw, 72px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-void);
}

.page-news .news-series__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  pointer-events: none;
}

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

.page-news .news-series__lead {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-series__track {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding-top: 22px;
}

.page-news .news-series__track::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: var(--line);
}

.page-news .news-series__node {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 16px 16px 18px;
  background: rgba(11, 27, 58, 0.86);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-news .news-series__node:hover {
  border-color: var(--cyan);
  background: rgba(18, 42, 85, 0.92);
}

.page-news .news-series__dot {
  position: absolute;
  top: -25px;
  left: 16px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
  transition: background 0.2s ease;
}

.page-news .news-series__node:hover .news-series__dot {
  background: var(--gold);
}

.page-news .news-series__step {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-news .news-series__name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}

.page-news .news-series__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 资料上新 ---------- */

.page-news .news-downloads {
  padding: clamp(34px, 5vw, 68px) 0 0;
}

.page-news .news-dl {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-news .news-dl__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px 18px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}

.page-news .news-dl__row:hover {
  background: rgba(18, 42, 85, 0.6);
}

.page-news .news-dl__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .news-dl__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.page-news .news-dl__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .news-dl__tag {
  justify-self: start;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
  border: 1px solid var(--gold);
}

.page-news .news-dl__foot {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .news-dl__link,
.page-news .news-help__link {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 197, 66, 0.45);
  transition: border-color 0.2s ease;
}

.page-news .news-dl__link:hover,
.page-news .news-help__link:hover {
  border-color: var(--gold);
}

/* ---------- 收尾 ---------- */

.page-news .news-help {
  padding: clamp(34px, 5vw, 68px) 0 clamp(42px, 6vw, 84px);
}

.page-news .news-help__box {
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(61, 224, 208, 0.08), transparent 58%),
    var(--ink-deep);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-news .news-help__text {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-news .news-help__more {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-news .news-guide__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .news-hero__num {
    font-size: 26px;
  }
}

@media (min-width: 760px) {
  .page-news .news-dl__row {
    grid-template-columns: 88px minmax(0, 1fr) minmax(0, 1.5fr) auto;
    align-items: center;
  }

  .page-news .news-series__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-news .news-series__node {
    border-right-width: 0;
  }

  .page-news .news-series__node:last-child {
    border-right-width: 1px;
  }
}

@media (min-width: 900px) {
  .page-news .news-stream {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 44px;
  }

  .page-news .news-stream__side {
    position: sticky;
    top: calc(var(--top-h) + 24px);
    padding-top: 4px;
    border-top: 0;
  }

  .page-news .news-stream__side .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .page-news .news-stream__side .filter-btn {
    text-align: left;
  }

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

  .page-news .news-item--media .news-item__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 250px);
    gap: 24px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-news .news-item:nth-child(3n + 2) {
    width: 94%;
    margin-left: 6%;
  }

  .page-news .news-item:nth-child(3n) {
    width: 97%;
    margin-left: 2%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-item__excerpt,
  .page-news .news-series__node,
  .page-news .news-series__dot,
  .page-news .news-guide__cell {
    transition: none;
  }
}