.page-news {
  --news-line: rgba(168, 218, 220, 0.22);
  --news-line-strong: rgba(168, 218, 220, 0.42);
  --news-line-ink: rgba(7, 30, 43, 0.14);
  --news-glow: rgba(79, 209, 197, 0.16);
  --news-warm: rgba(255, 138, 61, 0.13);

  position: relative;
  background:
    radial-gradient(1100px 560px at 84% -6%, var(--news-glow), transparent 62%),
    radial-gradient(820px 480px at 4% 8%, var(--news-warm), transparent 60%),
    var(--bg-base);
  color: var(--text);
  overflow-x: clip;
}

.page-news > .shell {
  padding-block: clamp(1rem, 2.5vw, 2rem) clamp(3rem, 7vw, 5.5rem);
}

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

.page-news .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .section {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}

/* ---------- 首屏 ---------- */
.page-news .news-mast {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: clamp(1rem, 2.5vw, 1.75rem);
}

.page-news .news-mast__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.85rem, 5.4vw, 3.15rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0.55rem 0 0.85rem;
  color: var(--paper);
}

.page-news .news-mast__text {
  margin: 0;
  max-width: 46ch;
  color: var(--text-soft);
  line-height: 1.75;
  font-size: clamp(0.94rem, 1.6vw, 1.02rem);
}

.page-news .news-mast__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.1rem;
}

.page-news .news-mast__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.35rem;
}

.page-news .news-mast__media {
  border: 1px solid var(--news-line);
  border-radius: 2px;
  overflow: hidden;
  box-shadow: var(--shadow-panel);
  background: rgba(7, 30, 43, 0.4);
}

.page-news .news-mast__media .media__caption {
  color: var(--text-dim);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  padding: 0.5rem 0.75rem 0.6rem;
}

/* ---------- 专题目录 ---------- */
.page-news .topic-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: 1fr;
}

.page-news .topic-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.35rem 1.25rem 1.4rem;
  background: var(--paper);
  color: var(--navy);
  border: 1px solid var(--news-line-ink);
  border-top: 3px solid var(--cyan);
  border-radius: 2px;
  box-shadow: var(--shadow-panel);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-top-color 0.25s ease;
}

.page-news .topic-card:hover,
.page-news .topic-card:focus-within {
  transform: translateY(-4px);
  border-top-color: var(--orange);
  box-shadow: var(--shadow-raise);
}

.page-news .topic-card__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--river);
  opacity: 0.72;
}

.page-news .topic-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.page-news .topic-card__desc {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.7;
  color: rgba(7, 30, 43, 0.72);
}

.page-news .topic-card__count {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: rgba(7, 30, 43, 0.55);
}

.page-news .topic-card__count strong {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--river);
}

.page-news .topic-card__link {
  margin-top: auto;
  padding-top: 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--river);
  text-decoration: none;
  border-bottom: 1px dashed rgba(11, 79, 108, 0.35);
  align-self: flex-start;
}

.page-news .topic-card__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 条目列表与筛选 ---------- */
.page-news .feed-filter {
  position: relative;
}

.page-news .feed-filter__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.page-news .filter-bar {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.9rem;
  scrollbar-width: none;
}

.page-news .filter-bar::-webkit-scrollbar {
  display: none;
}

.page-news .filter-bar .chip {
  flex: 0 0 auto;
  cursor: pointer;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--news-line);
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text-soft);
  background: transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-news .filter-bar .chip:hover {
  border-color: var(--cyan);
  color: var(--paper);
}

.page-news #ft-all:checked ~ .filter-bar label[for="ft-all"],
.page-news #ft-data:checked ~ .filter-bar label[for="ft-data"],
.page-news #ft-product:checked ~ .filter-bar label[for="ft-product"],
.page-news #ft-case:checked ~ .filter-bar label[for="ft-case"],
.page-news #ft-guide:checked ~ .filter-bar label[for="ft-guide"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--navy);
  font-weight: 600;
}

.page-news #ft-data:checked ~ .feed .feed__item:not([data-cat="data"]),
.page-news #ft-product:checked ~ .feed .feed__item:not([data-cat="product"]),
.page-news #ft-case:checked ~ .feed .feed__item:not([data-cat="case"]),
.page-news #ft-guide:checked ~ .feed .feed__item:not([data-cat="guide"]) {
  display: none;
}

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

.page-news .feed__item {
  border-bottom: 1px solid var(--news-line);
}

.page-news .entry {
  position: relative;
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) auto;
  gap: 0.35rem 0.9rem;
  align-items: start;
  padding: 1.15rem 0.6rem 1.2rem 0.75rem;
  transition: background 0.25s ease;
}

.page-news .entry::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.28s ease;
}

.page-news .entry:hover,
.page-news .entry:focus-within {
  background: rgba(79, 209, 197, 0.06);
}

.page-news .entry:hover::before,
.page-news .entry:focus-within::before {
  transform: scaleY(1);
}

.page-news .entry__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  padding-top: 0.2rem;
}

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

.page-news .entry__label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.4rem;
}

.page-news .entry__time {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-news .entry__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(0.98rem, 2.2vw, 1.1rem);
  line-height: 1.5;
  color: var(--paper);
}

.page-news .entry__more {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}

.page-news .entry:hover .entry__more,
.page-news .entry:focus-within .entry__more {
  grid-template-rows: 1fr;
}

.page-news .entry__more > p {
  overflow: hidden;
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-news .entry__arrow {
  font-size: 1rem;
  color: var(--cyan);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  padding-top: 0.15rem;
}

.page-news .entry:hover .entry__arrow,
.page-news .entry:focus-within .entry__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- 案例战报 ---------- */
.page-news .cases-banner {
  border: 1px solid var(--news-line);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 0 1.25rem;
  background: rgba(7, 30, 43, 0.36);
}

.page-news .cases-banner .media__caption {
  color: var(--text-dim);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  padding: 0.5rem 0.75rem 0.6rem;
}

.page-news .case-deck {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: 1fr;
}

.page-news .case-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.2rem 1.15rem 1.25rem;
  background: var(--paper);
  color: var(--navy);
  border: 1px solid var(--news-line-ink);
  border-left: 4px solid var(--yellow);
  border-radius: 2px;
  box-shadow: 4px 4px 0 rgba(242, 201, 76, 0.18), var(--shadow-panel);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-news .case-card:hover,
.page-news .case-card:focus-within {
  transform: translateY(-3px);
  box-shadow: 8px 8px 0 rgba(242, 201, 76, 0.24), var(--shadow-panel);
}

.page-news .case-card > .tag {
  align-self: flex-start;
}

.page-news .case-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.page-news .case-card__facts {
  margin: 0;
  display: grid;
  gap: 0.55rem;
}

.page-news .case-card__row {
  display: grid;
  gap: 0.15rem;
}

.page-news .case-card__row dt {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--river);
  opacity: 0.8;
}

.page-news .case-card__row dd {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.68;
  color: rgba(7, 30, 43, 0.76);
}

.page-news .case-card .fold {
  margin-top: auto;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--news-line-ink);
}

.page-news .case-card .fold__summary {
  cursor: pointer;
  list-style: none;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--river);
}

.page-news .case-card .fold__summary::-webkit-details-marker {
  display: none;
}

.page-news .case-card .fold__summary::after {
  content: " ＋";
  color: var(--orange);
}

.page-news .case-card .fold[open] .fold__summary::after {
  content: " －";
}

.page-news .case-card .fold__body p {
  margin: 0.55rem 0 0;
  font-size: 0.83rem;
  line-height: 1.7;
  color: rgba(7, 30, 43, 0.7);
}

.page-news .cases-foot {
  margin: 1.25rem 0 0;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-news .cases-foot a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

/* ---------- 数据观察 ---------- */
.page-news .obs-layout {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.page-news .obs-media {
  margin: 0;
  border: 1px solid var(--news-line);
  border-radius: 2px;
  overflow: hidden;
  background: rgba(7, 30, 43, 0.36);
}

.page-news .obs-media .media__caption {
  color: var(--text-dim);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  padding: 0.5rem 0.75rem 0.6rem;
}

.page-news .obs-side {
  display: grid;
  gap: 1.1rem;
  align-content: start;
}

.page-news .obs-plot {
  width: 100%;
  height: auto;
  display: block;
  background: rgba(11, 79, 108, 0.32);
  border: 1px solid var(--news-line);
  border-radius: 2px;
}

.page-news .obs-plot__label {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--text-dim);
  letter-spacing: 0.06em;
}

.page-news .obs-plot__label--now {
  fill: var(--orange);
}

.page-news .obs-metrics {
  border: 1px solid var(--news-line);
  border-radius: 2px;
  padding: 0.95rem 1rem 1.05rem;
  background: rgba(15, 61, 62, 0.5);
}

.page-news .obs-metrics__list {
  list-style: none;
  margin: 0.6rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-news .obs-metrics__list li {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--news-line);
  border-radius: 2px;
  color: var(--text-soft);
  background: rgba(79, 209, 197, 0.07);
}

.page-news .obs-bars {
  display: grid;
  gap: 0.6rem;
  padding: 1rem 1.05rem 1.15rem;
  border: 1px solid var(--news-line);
  border-left: 3px solid var(--orange);
  border-radius: 2px;
  background: rgba(7, 30, 43, 0.42);
}

.page-news .obs-bars .data-figure {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.page-news .obs-bars .data-figure__value {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--cyan);
  line-height: 1;
}

.page-news .obs-bars .data-figure__unit {
  font-size: 0.9rem;
  color: var(--cyan);
}

.page-news .obs-bars .data-figure__label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-left: 0.35rem;
}

.page-news .obs-bars .data-bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(168, 218, 220, 0.14);
  overflow: hidden;
}

.page-news .obs-bars .data-bar__fill {
  display: block;
  height: 100%;
  width: calc(var(--v, 0) * 1%);
  background: linear-gradient(90deg, var(--shallow), var(--cyan));
  border-radius: inherit;
}

.page-news .obs-note {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-news .obs-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

/* ---------- 使用指南 ---------- */
.page-news .guide-layout {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.page-news .guide-media {
  margin: 0;
  border: 1px solid var(--news-line);
  border-radius: 2px;
  overflow: hidden;
  background: rgba(7, 30, 43, 0.36);
}

.page-news .guide-media .media__caption {
  color: var(--text-dim);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  padding: 0.5rem 0.75rem 0.6rem;
}

.page-news .guide-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  counter-reset: none;
}

.page-news .guide-step {
  position: relative;
  padding: 1rem 1.1rem 1.05rem 1.1rem;
  background: rgba(244, 247, 245, 0.05);
  border: 1px solid var(--news-line);
  border-radius: 2px;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.page-news .guide-step:hover {
  background: rgba(79, 209, 197, 0.08);
  border-color: var(--news-line-strong);
}

.page-news .guide-step__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-news .guide-step__title {
  margin: 0.35rem 0 0.4rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .guide-step p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 订阅与回访 ---------- */
.page-news .follow-panel {
  display: grid;
  gap: 1.1rem;
  padding: clamp(1.3rem, 3.5vw, 2.2rem);
  border: 1px solid var(--news-line-strong);
  border-radius: 2px;
  background:
    linear-gradient(140deg, rgba(11, 79, 108, 0.72), rgba(15, 61, 62, 0.92)),
    var(--river);
  box-shadow: var(--shadow-panel);
}

.page-news .follow-panel h2 {
  margin: 0.4rem 0 0.7rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.4rem, 3.6vw, 2.05rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-news .follow-panel__lede p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-news .follow-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-news .follow-panel__meta {
  list-style: none;
  margin: 0;
  padding: 0.9rem 0 0;
  border-top: 1px dashed rgba(168, 218, 220, 0.32);
  display: grid;
  gap: 0.35rem;
}

.page-news .follow-panel__meta li {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .case-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-mast {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
    gap: 2.75rem;
  }

  .page-news .obs-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 1.75rem;
    align-items: start;
  }

  .page-news .guide-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 1.75rem;
    align-items: start;
  }

  .page-news .guide-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .follow-panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    gap: 1.5rem 2.5rem;
  }

  .page-news .follow-panel__meta {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1080px) {
  .page-news .topic-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .entry {
    grid-template-columns: 3.2rem minmax(0, 1fr) 2rem;
    padding: 1.35rem 0.9rem 1.4rem 1rem;
  }
}

@media (max-width: 699px) {
  .page-news .entry__more {
    grid-template-rows: 1fr;
  }

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

  .page-news .entry {
    grid-template-columns: 2.2rem minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .topic-card,
  .page-news .case-card,
  .page-news .entry,
  .page-news .entry__more,
  .page-news .entry__arrow,
  .page-news .entry::before,
  .page-news .guide-step {
    transition: none;
  }

  .page-news .topic-card:hover,
  .page-news .case-card:hover {
    transform: none;
  }
}

.page-news {
  --v: 1rem;
}