.page-news {
  --news-gap: clamp(14px, 2.1vw, 26px);
  --news-radius: 10px;
  position: relative;
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 6vw, 88px);
  background:
    radial-gradient(1150px 540px at 88% -8%, rgba(139, 92, 246, 0.14), transparent 62%),
    radial-gradient(880px 460px at 3% 4%, rgba(34, 211, 238, 0.075), transparent 58%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-night) 42%, var(--bg-deep) 100%);
}

.page-news .news-crumbs {
  padding-top: clamp(16px, 2.6vw, 28px);
}

.page-news .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-news .crumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--text-faint);
}

.page-news .crumbs-list a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-news .crumbs-list a:hover,
.page-news .crumbs-list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-news .crumbs-list [aria-current="page"] {
  color: var(--text);
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  padding: clamp(18px, 3vw, 34px) 0 clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--text);
  text-wrap: balance;
}

.page-news .news-hero-lede {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-news .news-pulse {
  display: grid;
  gap: 16px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--violet);
  border-radius: var(--news-radius);
  background: linear-gradient(150deg, rgba(17, 28, 46, 0.9), rgba(10, 18, 32, 0.5));
  box-shadow: 0 18px 44px rgba(5, 8, 15, 0.55);
}

.page-news .news-pulse .data-figure {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.page-news .news-pulse .data-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-news .news-pulse .data-label {
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--text-dim);
}

@media (min-width: 960px) {
  .page-news .news-hero .shell {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.92fr);
    grid-template-areas:
      "eyebrow pulse"
      "title pulse"
      "lede pulse";
    column-gap: clamp(28px, 5vw, 76px);
    row-gap: 16px;
    align-items: start;
  }

  .page-news .news-hero .eyebrow { grid-area: eyebrow; }
  .page-news .news-hero h1 { grid-area: title; }
  .page-news .news-hero-lede { grid-area: lede; }
  .page-news .news-pulse { grid-area: pulse; align-self: center; }
}

/* ---------- 索引 + 条目流 + 侧栏 ---------- */

.page-news .news-board {
  padding: clamp(28px, 4.4vw, 56px) 0 clamp(20px, 3vw, 36px);
}

.page-news .board-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 42px);
}

.page-news .news-lines-index {
  position: relative;
  padding-top: 14px;
}

.page-news .news-lines-index::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 2px;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
}

.page-news .news-lines-note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-faint);
}

.page-news .line-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .line-item {
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--line);
  border-radius: 7px;
  background: linear-gradient(90deg, rgba(17, 28, 46, 0.82), rgba(17, 28, 46, 0.3));
  transition: transform 0.18s ease, border-color 0.18s ease, border-left-color 0.18s ease;
}

.page-news .line-item:hover {
  transform: translateY(-2px);
  border-color: var(--line);
  border-left-color: var(--violet);
}

.page-news .line-freq {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--text-faint);
}

.page-news .line-desc {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* 条目流 */

.page-news .news-stream .section-head {
  margin-bottom: 12px;
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 12px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-news .filter-btn {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  padding: 6px 13px;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

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

.page-news .filter-btn.is-active {
  color: #ffffff;
  background: var(--violet);
  border-color: var(--violet);
  box-shadow: 0 0 0 3px var(--violet-soft);
}

.page-news .stream-count {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

.page-news .stream-count [data-filter-count] {
  color: var(--cyan);
  font-weight: 700;
}

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

.page-news .stream-item {
  border-bottom: 1px solid var(--line-soft);
  position: relative;
  transition: background 0.18s ease;
}

.page-news .stream-item:first-child::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(34, 211, 238, 0.08));
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.42);
}

.page-news .stream-item:hover {
  background: rgba(17, 28, 46, 0.55);
}

.page-news .stream-item .disclosure {
  width: 100%;
}

.page-news .stream-item summary {
  display: grid;
  grid-template-columns: 3.6rem auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 15px 14px 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .stream-item summary::marker {
  content: "";
}

.page-news .stream-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .stream-time {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--text-faint);
  white-space: nowrap;
}

.page-news .stream-title {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text);
  min-width: 0;
}

.page-news .stream-item summary .tag {
  justify-self: start;
  white-space: nowrap;
}

.page-news .disclosure-body {
  padding: 0 16px 18px 16px;
  font-size: 14px;
  line-height: 1.82;
  color: var(--text-dim);
  max-width: 38em;
}

.page-news .stream-item details[open] summary {
  background: rgba(139, 92, 246, 0.07);
}

/* 侧栏 */

.page-news .news-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-news .side-panel {
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  background: var(--panel-soft);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-news .side-panel:hover {
  border-color: rgba(139, 92, 246, 0.6);
  box-shadow: 0 14px 34px rgba(5, 8, 15, 0.55);
}

.page-news .side-panel .panel-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(90deg, rgba(139, 92, 246, 0.14), rgba(139, 92, 246, 0));
}

.page-news .side-panel .panel-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-news .side-panel .panel-body {
  padding: 14px 16px 18px;
  font-size: 13px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-news .side-panel .panel-body p {
  margin: 0 0 12px;
}

.page-news .dot-matrix {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin: 4px 0 12px;
}

.page-news .dot-matrix .dot {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 3px;
  background: rgba(52, 211, 153, 0.34);
  border: 1px solid rgba(52, 211, 153, 0.46);
}

.page-news .dot-matrix .dot.is-warn {
  background: rgba(249, 115, 22, 0.26);
  border-color: rgba(249, 115, 22, 0.66);
}

.page-news .dot-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--text-faint);
}

.page-news .legend-key {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  margin-right: 4px;
}

.page-news .legend-key.is-ok {
  background: rgba(52, 211, 153, 0.55);
  border: 1px solid rgba(52, 211, 153, 0.7);
}

.page-news .legend-key.is-warn {
  background: rgba(249, 115, 22, 0.42);
  border: 1px solid rgba(249, 115, 22, 0.8);
}

.page-news .side-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .back-to-latest {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  text-decoration: none;
  padding: 8px 2px;
  border-bottom: 1px solid var(--line);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-news .back-to-latest::before {
  content: "↑";
  color: var(--cyan);
}

.page-news .back-to-latest:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

@media (min-width: 1000px) {
  .page-news .board-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--news-gap);
  }

  .page-news .news-lines-index { grid-column: 1 / 4; }
  .page-news .news-stream { grid-column: 4 / 10; }
  .page-news .news-side {
    grid-column: 10 / 13;
    position: sticky;
    top: 108px;
    align-self: start;
  }
}

/* ---------- 四条内容线详解 ---------- */

.page-news .news-lines-detail {
  padding: clamp(30px, 4.6vw, 60px) 0 clamp(20px, 3vw, 36px);
}

.page-news .line-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 32px);
  margin-top: clamp(18px, 2.6vw, 32px);
}

.page-news .line-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-soft);
  border-radius: var(--news-radius);
  background: linear-gradient(160deg, rgba(17, 28, 46, 0.86), rgba(10, 18, 32, 0.55));
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-news .line-card:hover {
  transform: translateY(-2px);
  border-color: rgba(139, 92, 246, 0.65);
  box-shadow: 0 16px 40px rgba(5, 8, 15, 0.6);
}

.page-news .line-card .media-frame {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg-night);
}

.page-news .line-card .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-news .line-card-body {
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
}

.page-news .line-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-news .line-card h3::before {
  content: "";
  flex: 0 0 auto;
  width: 18px;
  height: 2px;
  background: var(--cyan);
}

.page-news .line-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.page-news .meta-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--text-dim);
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.page-news .line-card p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-dim);
}

.page-news .line-card-link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-news .line-card-link:hover {
  border-bottom-color: var(--cyan);
}

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

  .page-news .line-card:nth-child(even) {
    margin-top: clamp(24px, 4vw, 58px);
  }
}

/* ---------- 每月打磨与巡检 ---------- */

.page-news .news-maintenance {
  padding: clamp(30px, 4.6vw, 60px) 0 clamp(20px, 3vw, 36px);
}

.page-news .maint-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(18px, 2.6vw, 30px);
}

.page-news .maint-card {
  padding: 20px 18px 20px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 28, 46, 0.5);
  transition: border-top-color 0.2s ease, transform 0.2s ease;
}

.page-news .maint-card:hover {
  transform: translateY(-2px);
  border-top-color: var(--orange);
}

.page-news .maint-idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--orange);
  margin-bottom: 12px;
}

.page-news .maint-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-news .maint-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

@media (min-width: 720px) {
  .page-news .maint-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-news .maint-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 订阅 ---------- */

.page-news .news-subscribe {
  padding: clamp(24px, 3.6vw, 44px) 0 clamp(8px, 1.6vw, 18px);
}

.page-news .sub-panel {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--news-radius);
  background:
    linear-gradient(135deg, rgba(139, 92, 246, 0.14), rgba(34, 211, 238, 0.07) 52%, rgba(5, 8, 15, 0) 82%),
    var(--panel-soft);
}

.page-news .sub-copy p {
  margin: 12px 0 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-dim);
}

.page-news .sub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-news .sub-contact {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 14px;
  align-content: start;
  padding-top: 4px;
}

.page-news .sub-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  align-self: center;
}

.page-news .sub-value {
  font-size: 13px;
  color: var(--text);
  word-break: break-all;
}

@media (min-width: 880px) {
  .page-news .sub-panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: center;
    column-gap: clamp(28px, 5vw, 72px);
  }
}

/* ---------- 显现 ---------- */

.page-news [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.page-news [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-news [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-news .line-item,
  .page-news .line-card,
  .page-news .maint-card,
  .page-news .side-panel {
    transition: none;
  }
}

@media (max-width: 420px) {
  .page-news .stream-item summary {
    grid-template-columns: 3.2rem auto minmax(0, 1fr);
    gap: 8px;
    padding: 14px 10px 14px 14px;
  }

  .page-news .stream-title {
    font-size: 14px;
  }

  .page-news .disclosure-body {
    padding: 0 12px 16px 14px;
    font-size: 13.5px;
  }
}