.page-news {
  position: relative;
  background:
    radial-gradient(520px 220px at 88% 2%, rgba(255, 122, 26, 0.08), transparent 70%),
    radial-gradient(480px 260px at 6% 46%, rgba(46, 255, 176, 0.05), transparent 70%),
    var(--bg);
  color: var(--near-white);
}

.page-news a {
  color: var(--link);
  text-decoration: none;
}

.page-news a:hover {
  color: var(--orange);
}

.page-news img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

/* ===== Hero ===== */
.page-news__hero {
  position: relative;
  display: grid;
  gap: 28px;
  padding: 32px 0 48px;
  overflow: hidden;
}

.page-news__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(56% 62% at 82% 0%, rgba(255, 122, 26, 0.2), transparent 68%),
    linear-gradient(90deg, rgba(31, 42, 68, 0.32) 1px, transparent 1px),
    linear-gradient(0deg, rgba(31, 42, 68, 0.32) 1px, transparent 1px);
  background-size: auto, 52px 52px, 52px 52px;
  pointer-events: none;
  z-index: 0;
  mask-image: linear-gradient(120deg, black 0%, rgba(0, 0, 0, 0.5) 55%, transparent 100%);
  -webkit-mask-image: linear-gradient(120deg, black 0%, rgba(0, 0, 0, 0.5) 55%, transparent 100%);
}

.page-news__hero > * {
  position: relative;
  z-index: 1;
}

.page-news .breadcrumb {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

.page-news .breadcrumb__link {
  color: var(--muted);
}

.page-news .breadcrumb__link:hover {
  color: var(--orange);
}

.page-news .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--border);
}

.page-news .breadcrumb__current {
  color: var(--near-white);
}

.page-news__title {
  margin: 16px 0 12px;
  font-size: 2.2rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 900px;
}

.page-news__lead {
  margin: 0 0 18px;
  max-width: 760px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

.page-news__hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  padding: 8px 14px 8px 10px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-pill);
  background: rgba(19, 28, 46, 0.5);
}

.page-news__hero-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(46, 255, 176, 0.45);
  animation: pn-pulse 2s infinite;
}

.page-news__hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news__hero-stat {
  flex: 1 1 140px;
  min-width: 140px;
  padding: 18px 16px 14px;
  background: linear-gradient(150deg, var(--card), rgba(19, 28, 46, 0.55));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-news__hero-stat:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 122, 26, 0.65);
}

.page-news__hero-stat--highlight {
  border-color: rgba(255, 122, 26, 0.6);
  box-shadow: 0 8px 30px rgba(255, 122, 26, 0.08);
}

.page-news__hero-stat .data-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--orange);
}

.page-news__hero-stat--highlight .data-number {
  color: var(--near-white);
}

.page-news__hero-stat--highlight .data-number__unit {
  color: var(--orange);
}

.page-news__hero-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ===== 公告区 ===== */
.page-news__announce {
  padding: 48px 0 20px;
  background: linear-gradient(180deg, transparent, rgba(13, 42, 68, 0.42) 24%, rgba(13, 42, 68, 0.2) 82%, transparent);
}

.page-news__announce-head {
  display: grid;
  gap: 18px;
  margin-bottom: 28px;
}

.page-news .section-title {
  margin: 10px 0 0;
  font-size: 1.6rem;
}

.page-news .section-title__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--orange);
  margin-right: 10px;
  letter-spacing: 0.08em;
  vertical-align: 0.18em;
}

.page-news__filterbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news__filter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  font-size: 0.86rem;
  color: var(--muted);
  background: rgba(19, 28, 46, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-news__filter:hover {
  color: var(--near-white);
  border-color: var(--orange);
  background: rgba(255, 122, 26, 0.08);
}

.page-news__announce-list {
  display: grid;
  gap: 16px;
}

/* ===== 公告卡片 ===== */
.news-card {
  position: relative;
  padding: 38px 18px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.25s ease;
}

.news-card:hover {
  border-color: rgba(255, 122, 26, 0.45);
}

.news-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--border);
}

.news-card--accent::before {
  background: var(--orange);
}

.news-card::after {
  content: "";
  position: absolute;
  top: 18px;
  right: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(46, 255, 176, 0.45);
  animation: pn-pulse 2s infinite;
}

.news-card__index {
  position: absolute;
  top: 14px;
  left: 18px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.news-card__grid {
  display: grid;
  gap: 16px;
}

.news-card__image {
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

.news-card__body {
  min-width: 0;
}

.news-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.news-card__time {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.news-card__title {
  margin: 0 0 8px;
  font-size: 1.12rem;
  line-height: 1.45;
  color: var(--near-white);
}

.news-card__summary {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.news-card__details {
  margin-top: 14px;
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}

.news-card__details summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  list-style: none;
  font-size: 0.85rem;
  color: var(--orange-soft);
  user-select: none;
}

.news-card__details summary::-webkit-details-marker {
  display: none;
}

.news-card__details summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
}

.news-card__details[open] summary::before {
  content: "−";
}

.news-card__details p {
  margin: 12px 0 0;
  padding: 14px 16px;
  background: rgba(10, 14, 26, 0.45);
  border-radius: var(--radius);
  color: var(--near-white);
  font-size: 0.89rem;
  line-height: 1.75;
}

/* ===== 版本时间线 ===== */
.page-news__versions {
  padding: 52px 0 20px;
}

.page-news__versions-grid {
  display: grid;
  gap: 24px;
}

.page-news__versions-index {
  position: relative;
  padding: 14px;
  background: rgba(19, 28, 46, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.page-news__versions-image {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
}

.pn-timeline {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px dashed var(--border);
  padding-top: 10px;
}

.pn-timeline__item {
  position: relative;
  margin: 0;
}

.pn-timeline__item::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 15px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 10px rgba(255, 122, 26, 0.32);
}

.pn-timeline__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0 9px 16px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
  border-radius: var(--radius);
}

.pn-timeline__link:hover {
  color: var(--near-white);
  background: rgba(255, 122, 26, 0.07);
}

.pn-timeline__year {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--orange-soft);
}

.pn-timeline__label {
  font-size: 0.9rem;
}

.page-news__versions-intro {
  margin-bottom: 20px;
}

.page-news__versions-lead {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 640px;
}

.pn-version-stack {
  display: grid;
  gap: 12px;
}

.pn-version-card {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.pn-version-card:hover {
  border-color: rgba(255, 122, 26, 0.5);
}

.pn-version-card__year {
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--orange);
}

.pn-version-card__title {
  margin: 0 0 5px;
  font-size: 1rem;
  color: var(--near-white);
}

.pn-version-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}

.pn-version-card--current {
  border-color: rgba(46, 255, 176, 0.55);
  background: linear-gradient(135deg, rgba(46, 255, 176, 0.07), var(--card));
}

.pn-version-card--current .pn-version-card__year {
  color: var(--green);
}

/* ===== 专题观察 ===== */
.page-news__features {
  padding: 56px 0 72px;
  background: linear-gradient(180deg, transparent, rgba(13, 42, 68, 0.3) 30%, transparent);
}

.page-news__features-head {
  margin-bottom: 8px;
}

.pn-feature {
  position: relative;
  display: grid;
  gap: 14px;
  margin-top: 24px;
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.pn-feature:hover {
  border-color: rgba(255, 122, 26, 0.5);
  box-shadow: 0 12px 40px rgba(10, 14, 26, 0.5);
}

.pn-feature::before {
  content: "◢";
  position: absolute;
  right: 16px;
  bottom: 10px;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--border);
  opacity: 0.6;
  pointer-events: none;
}

.pn-feature__figure {
  margin: 0;
}

.pn-feature__image {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.pn-feature__quote {
  position: absolute;
  top: 2px;
  right: 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 4.8rem;
  line-height: 1;
  color: rgba(255, 122, 26, 0.18);
  pointer-events: none;
  z-index: 0;
}

.pn-feature__body {
  position: relative;
  z-index: 1;
  padding: 4px 2px 0;
}

.pn-feature__title {
  margin: 12px 0 10px;
  font-size: 1.28rem;
  line-height: 1.4;
  color: var(--near-white);
}

.pn-feature__desc {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* ===== 保存按钮（纯 CSS 收藏切换） ===== */
.save-toggle {
  display: inline-flex;
  margin-top: 6px;
  cursor: pointer;
}

.save-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.save-toggle__saved {
  display: none;
}

.save-toggle input:checked ~ .save-toggle__default {
  display: none;
}

.save-toggle input:checked ~ .save-toggle__saved {
  display: inline-flex;
}

/* ===== 动画 ===== */
@keyframes pn-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(46, 255, 176, 0.45);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(46, 255, 176, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(46, 255, 176, 0);
  }
}

/* ===== 平板及以上 ===== */
@media (min-width: 768px) {
  .page-news__title {
    font-size: 3rem;
  }

  .page-news__lead {
    font-size: 1.08rem;
  }

  .page-news__announce {
    padding: 64px 0 32px;
  }

  .page-news__announce-head {
    grid-template-columns: 1fr auto;
    align-items: end;
    margin-bottom: 32px;
  }

  .news-card {
    padding: 44px 24px 24px;
  }

  .news-card--lead .news-card__grid {
    grid-template-columns: 240px 1fr;
    align-items: start;
  }

  .news-card--lead .news-card__image {
    width: 240px;
    height: 160px;
    object-fit: cover;
  }

  .news-card__title {
    font-size: 1.2rem;
  }

  .pn-version-stack .pn-version-card:nth-child(even) {
    transform: translateX(20px);
  }

  .pn-feature {
    grid-template-columns: 2fr 3fr;
    align-items: center;
    gap: 24px;
  }

  .pn-feature--secondary {
    grid-template-columns: 3fr 2fr;
  }

  .pn-feature--secondary .pn-feature__figure {
    order: 2;
  }

  .pn-feature__image {
    height: 100%;
    min-height: 240px;
    object-fit: cover;
  }

  .pn-feature__title {
    font-size: 1.4rem;
  }
}

/* ===== 桌面 ===== */
@media (min-width: 1024px) {
  .page-news__hero {
    grid-template-columns: 1.35fr 0.65fr;
    gap: 40px;
    padding: 56px 0 72px;
  }

  .page-news__hero-copy {
    padding-right: 40px;
  }

  .page-news__hero-stats {
    align-content: center;
    gap: 14px;
  }

  .page-news__hero-stat {
    min-width: 160px;
  }

  .page-news__versions {
    padding-top: 72px;
  }

  .page-news__versions-grid {
    grid-template-columns: 1fr 330px;
    gap: 30px;
  }

  .page-news__versions-index {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-news__versions-content {
    grid-column: 1;
    grid-row: 1;
  }

  .page-news__versions-image {
    height: 240px;
  }

  .pn-version-card {
    grid-template-columns: 110px 1fr;
  }

  .pn-version-stack .pn-version-card:nth-child(even) {
    transform: translateX(28px);
  }

  .page-news__features {
    padding-bottom: 96px;
  }

  .pn-feature {
    padding: 26px;
  }

  .pn-feature__quote {
    font-size: 6rem;
  }
}