.page-news {
  --glass-bg: rgba(240, 247, 255, 0.045);
  --glass-border: rgba(240, 247, 255, 0.09);
  --glass-strong: rgba(13, 22, 53, 0.72);
  --speed-line: linear-gradient(90deg, transparent, var(--neon-green) 35%, var(--signal-orange) 75%, transparent);

  position: relative;
  background: var(--deep-space);
  color: var(--text-glow);
  overflow-x: hidden;
  padding-bottom: 64px;
}

.page-news .container {
  margin-inline: auto;
}

.page-news::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--speed-line);
  opacity: 0.8;
  z-index: 1;
}

.page-news .breadcrumb {
  margin: 28px 0 20px;
}

.page-news [id] {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

/* ===== Hero 首屏 ===== */
.page-news__hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
  padding: 12px 0 36px;
}

.page-news__hero-kicker {
  margin: 0 0 12px;
  font: 700 13px/1.4 var(--font-body);
  letter-spacing: 0.22em;
  color: var(--neon-green);
  text-transform: uppercase;
}

.page-news__hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(34px, 6vw, 56px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--text-glow);
}

.page-news__hero h1 span {
  display: block;
  margin-top: 8px;
  font-size: 0.52em;
  font-weight: 600;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

.page-news__hero-desc {
  margin: 18px 0 0;
  max-width: 600px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-muted);
}

.page-news__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-news__hero-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--deep-space-3);
}

.page-news__hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 40%, rgba(57, 255, 20, 0.08) 60%, transparent);
  pointer-events: none;
}

.page-news__hero-media img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 240px;
  object-fit: cover;
}

/* ===== 公告栏 ===== */
.page-news__notice-wrap {
  margin: 8px 0 36px;
}

.page-news__notice {
  position: relative;
  background: linear-gradient(135deg, rgba(57, 255, 20, 0.1), rgba(255, 110, 64, 0.06));
  border: 1px solid var(--border-grid);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--signal-orange);
  overflow: hidden;
}

.page-news__notice::after {
  content: '';
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(57, 255, 20, 0.12), transparent 70%);
  pointer-events: none;
}

.page-news__notice::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--signal-orange), var(--neon-green));
  transform-origin: left;
  animation: pageNewsNoticeSlide 3s ease-in-out infinite;
  z-index: 1;
}

@keyframes pageNewsNoticeSlide {
  0%, 60% {
    transform: scaleX(0);
    opacity: 0;
  }
  80% {
    transform: scaleX(1);
    opacity: 1;
  }
  100% {
    transform: scaleX(1);
    opacity: 1;
  }
}

.page-news__notice-head {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  flex-wrap: wrap;
}

.page-news__notice-head::-webkit-details-marker {
  display: none;
}

.page-news__notice-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: var(--neon-green);
  color: var(--deep-space);
  font: 700 12px/1.4 var(--font-body);
  border-radius: var(--radius-pill);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.page-news__notice-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--deep-space);
  animation: pageNewsPulse 1.6s infinite;
}

@keyframes pageNewsPulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.7);
  }
}

.page-news__notice-title {
  flex: 1;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-glow);
  min-width: 180px;
}

.page-news__notice-toggle {
  position: relative;
  font-size: 13px;
  color: var(--ink-muted);
}

.page-news__notice-toggle::after {
  content: '展开详情';
  padding-left: 6px;
  color: var(--signal-orange);
  font-weight: 600;
}

.page-news__notice[open] .page-news__notice-toggle::after {
  content: '收起';
}

.page-news__notice-body {
  padding: 0 20px 24px;
}

.page-news__notice-body p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-muted);
}

.page-news__notice-body ul {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-news__notice-body li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-glow);
}

.page-news__notice-body li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 2px;
  background: var(--neon-green);
}

.page-news__notice-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-news__notice-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--signal-orange);
  text-decoration: none;
  transition: color 0.25s;
}

.page-news__notice-link:hover {
  color: var(--neon-green);
}

/* ===== 分类筛选 ===== */
.page-news__filter-bar {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 48px 0 20px;
}

.page-news__filter-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-glow);
}

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

.page-news__filter {
  display: inline-block;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--ink-muted);
  font: 600 14px/1.2 var(--font-body);
  text-decoration: none;
  transition: border-color 0.25s, color 0.25s, transform 0.25s, background 0.25s;
}

.page-news__filter:hover {
  color: var(--neon-green);
  border-color: var(--neon-green);
  transform: translateY(-2px);
}

.page-news__filter.is-active {
  background: var(--neon-green);
  border-color: var(--neon-green);
  color: var(--deep-space);
  box-shadow: 0 0 18px rgba(57, 255, 20, 0.3);
}

/* ===== 瀑布流文章列表 ===== */
.page-news__masonry {
  column-count: 1;
  column-gap: 22px;
}

.page-news__card {
  break-inside: avoid;
  position: relative;
  margin: 0 0 22px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-news__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--speed-line);
  opacity: 0;
  transform: translateX(-20%);
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 2;
}

.page-news__card::after {
  content: '';
  position: absolute;
  right: -18px;
  bottom: -18px;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, transparent 47%, rgba(255, 110, 64, 0.12) 48%, transparent 60%);
  pointer-events: none;
  transform: translateY(6px);
  transition: transform 0.3s ease;
}

.page-news__card:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 20, 0.45);
  box-shadow: 0 12px 40px var(--shadow-deep);
}

.page-news__card:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.page-news__card:hover::after {
  transform: translateY(0);
}

.page-news__card:target {
  border-color: var(--neon-green);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.25);
}

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

.page-news__card-body {
  padding: 18px 18px 22px;
}

.page-news__card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.page-news__card-date {
  font-size: 12px;
  color: var(--ink-muted);
  white-space: nowrap;
}

.page-news__card h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-glow);
}

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

.page-news__card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--signal-orange);
  text-decoration: none;
  transition: gap 0.25s;
}

.page-news__card-link:hover {
  gap: 10px;
}

/* ===== 热门内容 ===== */
.page-news__popular {
  margin-top: 48px;
  padding: 36px 24px;
  background: var(--warm-paper);
  border-radius: var(--radius-lg);
  color: var(--deep-space);
}

.page-news__popular-head {
  margin-bottom: 24px;
}

.page-news__popular-kicker {
  margin: 0 0 10px;
  font: 700 13px/1.4 var(--font-body);
  letter-spacing: 0.22em;
  color: var(--signal-orange);
  text-transform: uppercase;
}

.page-news__popular h2 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 700;
  color: var(--deep-space);
}

.page-news__popular-head p {
  margin: 0;
  max-width: 560px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(10, 17, 40, 0.72);
}

.page-news__popular-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-news__pop-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--deep-space);
}

.page-news__pop-card img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.65;
}

.page-news__pop-body {
  padding: 18px 18px 20px;
}

.page-news__pop-label {
  display: inline-block;
  padding: 4px 12px;
  background: var(--neon-green);
  color: var(--deep-space);
  font: 700 12px/1.4 var(--font-body);
  border-radius: var(--radius-pill);
}

.page-news__pop-body h3 {
  margin: 12px 0 14px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-glow);
}

.page-news__pop-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--neon-green);
  text-decoration: none;
  transition: gap 0.25s;
}

.page-news__pop-link:hover {
  gap: 12px;
}

.page-news__pop-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  background: rgba(10, 17, 40, 0.04);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-news__pop-list li + li {
  border-top: 1px solid rgba(10, 17, 40, 0.1);
}

.page-news__pop-list a {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 16px;
  color: var(--deep-space);
  text-decoration: none;
  transition: background 0.25s ease, padding-left 0.25s ease;
}

.page-news__pop-list a:hover {
  background: rgba(57, 255, 20, 0.14);
  padding-left: 22px;
}

.page-news__pop-num {
  font: 700 14px/1 var(--font-head);
  color: var(--signal-orange);
}

.page-news__pop-arrow {
  font-size: 16px;
  color: var(--signal-orange);
}

/* ===== 底部交叉导航 ===== */
.page-news__bottom-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 40px;
}

.page-news__bottom-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--deep-space-2);
  border: 1px solid var(--glass-border);
  text-decoration: none;
  transition: border-color 0.25s, transform 0.25s;
}

.page-news__bottom-link span {
  font-size: 13px;
  color: var(--ink-muted);
}

.page-news__bottom-link strong {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-glow);
}

.page-news__bottom-link:hover {
  border-color: var(--neon-green);
  transform: translateY(-2px);
}

/* ===== 响应式增强 ===== */
@media (min-width: 641px) {
  .page-news__hero {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
  }

  .page-news__notice-head {
    padding: 20px 28px;
  }

  .page-news__notice-body {
    padding: 0 28px 28px;
  }

  .page-news__filter-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-news__masonry {
    column-count: 2;
  }

  .page-news__popular {
    padding: 40px 36px;
  }

  .page-news__popular-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: stretch;
  }

  .page-news__bottom-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 961px) {
  .page-news__masonry {
    column-count: 3;
  }

  .page-news__pop-card {
    display: flex;
    flex-direction: column;
  }

  .page-news__pop-card .page-news__pop-body {
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .page-news__pop-link {
    margin-top: auto;
  }

  .page-news__notice-wrap {
    margin-bottom: 12px;
  }
}