.page-news {
  --cat-delivery: var(--c-cyan);
  --cat-batch: var(--c-amber);
  --cat-install: var(--c-jade);
  --cat-warranty: var(--c-scale);
  --cat-desk: var(--c-alert);
  --rail-index-w: 2.25rem;
  --sec-gap: clamp(32px, 5vw, 64px);
}

/* ---------- 首屏框景 ---------- */
.page-news .topics-hero {
  padding-top: clamp(18px, 3vw, 32px);
}

.page-news .topics-hero__frame {
  position: relative;
  margin-top: 18px;
  padding: clamp(22px, 4vw, 46px) clamp(18px, 4vw, 44px);
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 92% -10%, rgba(89, 227, 208, 0.12), transparent 58%),
    linear-gradient(180deg, rgba(16, 38, 58, 0.92), rgba(10, 26, 42, 0.94));
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.page-news .topics-hero__frame::before,
.page-news .topics-hero__frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 9px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--c-scale) 0 1px,
    transparent 1px 15px
  );
  opacity: 0.42;
  pointer-events: none;
}

.page-news .topics-hero__frame::before {
  top: 0;
}

.page-news .topics-hero__frame::after {
  bottom: 0;
}

.page-news .topics-hero__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-scale);
}

.page-news .topics-hero__title {
  margin: 16px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(27px, 5.6vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.012em;
  color: var(--c-paper);
  max-width: 20ch;
}

.page-news .topics-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-scale);
}

.page-news .topics-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 26px 0 0;
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  background: var(--line-color);
  overflow: hidden;
}

.page-news .topics-hero__meta-item {
  background: rgba(22, 50, 75, 0.72);
  padding: 11px 13px;
  display: grid;
  gap: 4px;
}

.page-news .topics-hero__meta-item dt {
  font-size: 12px;
  color: var(--c-scale);
  letter-spacing: 0.04em;
}

.page-news .topics-hero__meta-item dd {
  margin: 0;
  font-size: 15px;
  color: var(--c-amber);
}

@media (min-width: 720px) {
  .page-news .topics-hero__meta {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

/* ---------- 双列骨架 + 左侧进度轴 ---------- */
.page-news .topics-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding-block: clamp(26px, 4vw, 52px);
}

.page-news .topics-axis {
  display: none;
}

@media (min-width: 960px) {
  .page-news .topics-layout {
    grid-template-columns: 172px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-news .topics-axis {
    display: block;
    position: sticky;
    top: 96px;
  }
}

.page-news .topics-axis__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  position: relative;
  display: grid;
  gap: 26px;
}

.page-news .topics-axis__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line-color);
}

.page-news .topics-axis__step {
  position: relative;
  display: grid;
  gap: 3px;
}

.page-news .topics-axis__step::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1px solid var(--c-scale);
  background: var(--c-deep);
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-news .topics-axis__step.is-active::before {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-news .topics-axis__index {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-scale);
  text-decoration: none;
  transition: color 200ms var(--ease);
}

.page-news .topics-axis__step.is-active .topics-axis__index,
.page-news .topics-axis__index:hover {
  color: var(--c-cyan);
}

.page-news .topics-axis__index:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 2px;
}

.page-news .topics-axis__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-scale);
}

/* ---------- 章节骨架 ---------- */
.page-news .topics-sec {
  position: relative;
  padding-top: var(--sec-gap);
}

.page-news .topics-sec:first-of-type {
  padding-top: 0;
}

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

.page-news .topics-sec + .topics-sec::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 68px;
  height: 8px;
  background: var(--c-amber);
  opacity: 0.82;
}

.page-news .chapter-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 14px;
}

.page-news .chapter-head__index {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
}

.page-news .chapter-head__title {
  margin: 0;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-paper);
}

.page-news .topics-sec__lede {
  margin: 0 0 24px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-scale);
}

.page-news .topics-sec__footnote {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-news .topics-sec__footnote a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(89, 227, 208, 0.4);
}

.page-news .topics-sec__footnote a:hover {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 01 分类色带 ---------- */
.page-news .cat-band {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-news .cat-band__item {
  border-left: 4px solid var(--cat-color, var(--c-scale));
  background: var(--c-panel);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background-color 140ms var(--ease);
}

.page-news .cat-band__item:hover {
  background: var(--c-raised);
}

.page-news .cat-band__item--delivery { --cat-color: var(--cat-delivery); }
.page-news .cat-band__item--batch    { --cat-color: var(--cat-batch); }
.page-news .cat-band__item--install  { --cat-color: var(--cat-install); }
.page-news .cat-band__item--warranty { --cat-color: var(--cat-warranty); }
.page-news .cat-band__item--desk     { --cat-color: var(--cat-desk); }

.page-news .cat-band__link {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--c-paper);
}

.page-news .cat-band__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 2px;
}

.page-news .cat-band__code {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cat-color, var(--c-scale));
}

.page-news .cat-band__name {
  font-size: 16px;
  font-weight: 700;
}

.page-news .cat-band__count {
  font-size: 22px;
  line-height: 1.1;
  color: var(--c-paper);
}

.page-news .cat-band__unit {
  font-size: 12px;
  color: var(--c-scale);
  margin-left: 3px;
}

.page-news .cat-band__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-scale);
}

@media (min-width: 600px) {
  .page-news .cat-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-news .cat-band {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-news .cat-band__link {
    grid-template-rows: auto auto auto 1fr;
  }
}

/* ---------- 02 轨道列表 ---------- */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.page-news .filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--c-paper);
  background: var(--c-raised);
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  text-decoration: none;
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-news .filter-chip:hover {
  color: var(--c-amber);
  border-color: var(--c-amber-deep);
}

.page-news .filter-chip:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.page-news .rail-group {
  --cat-color: var(--c-scale);
  margin-bottom: 34px;
  scroll-margin-top: 96px;
}

.page-news .rail-group--delivery { --cat-color: var(--cat-delivery); }
.page-news .rail-group--batch    { --cat-color: var(--cat-batch); }
.page-news .rail-group--install  { --cat-color: var(--cat-install); }
.page-news .rail-group--warranty { --cat-color: var(--cat-warranty); }
.page-news .rail-group--desk     { --cat-color: var(--cat-desk); }

.page-news .rail-group__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 2px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--cat-color, var(--c-scale));
  font-size: 15px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-news .rail-group__title::before {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--cat-color, var(--c-scale));
}

.page-news .rail-group__count {
  margin-left: auto;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-scale);
}

.page-news .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .rail-item {
  display: grid;
  grid-template-columns: var(--rail-index-w) minmax(0, 1fr);
  gap: 10px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-color);
}

.page-news .rail-item__index {
  position: relative;
  padding-left: 10px;
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-scale);
}

.page-news .rail-item__index::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 3px;
  border-radius: 1px;
  background: var(--cat-color, var(--c-scale));
  opacity: 0.85;
}

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

.page-news .rail-item__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-news .rail-item__title a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-news .rail-item__title a:hover {
  color: var(--cat-color, var(--c-cyan));
  border-bottom-color: currentColor;
}

.page-news .rail-item__title a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 2px;
}

.page-news .rail-item__summary {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-scale);
}

.page-news .rail-item__thumb {
  margin-top: 12px;
  max-width: 300px;
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-raised);
}

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

.page-news .rail-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: 10px;
}

.page-news .rail-item__time {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--c-sand);
}

.page-news .rail-item__ref {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-scale);
}

.page-news .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: none;
  display: inline-block;
}

.page-news .status-dot--cyan { background: var(--c-cyan); }
.page-news .status-dot--amber { background: var(--c-amber); }
.page-news .status-dot--jade { background: var(--c-jade); }

/* ---------- 03 重点条目 ---------- */
.page-news .spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding: clamp(16px, 3vw, 28px);
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  background: var(--c-panel);
}

.page-news .spotlight__title {
  margin: 12px 0 10px;
  font-size: clamp(18px, 2.6vw, 24px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-paper);
}

.page-news .spotlight__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-scale);
}

.page-news .spotlight__points {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-news .spotlight__points li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-sand);
}

.page-news .spotlight__points .mono {
  flex: none;
  width: 16px;
  color: var(--c-batch, var(--c-amber));
  font-size: 12px;
  padding-top: 3px;
}

.page-news .spotlight__guide {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-color);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-scale);
}

.page-news .spotlight__guide a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(89, 227, 208, 0.4);
  margin-left: 4px;
}

.page-news .spotlight__guide a:hover {
  border-bottom-color: var(--c-cyan);
}

.page-news .spotlight__figure {
  margin: 0;
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-raised);
}

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

.page-news .figure__caption {
  padding: 10px 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-scale);
  border-top: 1px solid var(--line-color);
}

@media (min-width: 880px) {
  .page-news .spotlight {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: start;
    gap: 30px;
  }

  .page-news .spotlight__figure {
    margin-top: 8px;
  }
}

.page-news .spotlight-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-news .spotlight-list__item {
  padding: 16px 18px;
  border: 1px solid var(--line-color);
  border-left: 4px solid var(--c-amber);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(16, 38, 58, 0.72);
}

.page-news .spotlight-list__title {
  margin: 10px 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-news .spotlight-list__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-scale);
}

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

/* ---------- 04 归档与检索 ---------- */
.page-news .archive-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-news .archive-card {
  padding: 16px 18px;
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  background: var(--c-panel);
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-news .archive-card__label {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-amber);
}

.page-news .archive-card__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-news .archive-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-scale);
}

@media (min-width: 760px) {
  .page-news .archive-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .rail-segments {
  margin-top: 26px;
  padding: clamp(16px, 3vw, 24px);
  border: 1px solid var(--line-color);
  border-radius: var(--radius);
  background: rgba(10, 26, 42, 0.6);
}

.page-news .rail-segments__title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-news .rail-segments__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-color);
}

.page-news .rail-segments__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 0 12px 14px;
  border-bottom: 1px solid var(--line-color);
  position: relative;
}

.page-news .rail-segments__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--c-scale);
  opacity: 0.7;
}

.page-news .rail-segments__item:last-child::before {
  background: var(--c-cyan);
  opacity: 1;
}

.page-news .rail-segments__range {
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--c-paper);
}

.page-news .rail-segments__note {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-scale);
}

.page-news .rail-segments__foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
}

@media (min-width: 700px) {
  .page-news .rail-segments__item {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

/* ---------- 05 核对入口 ---------- */
.page-news .topics-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line-color);
  border-left: 4px solid var(--c-jade);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--glass-strong);
}

.page-news .topics-cta__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-news .topics-cta__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-news .topics-cta__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-sand);
}

.page-news .topics-cta__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-jade);
}

.page-news .topics-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-start;
}

@media (min-width: 800px) {
  .page-news .topics-cta {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 28px;
  }
}

/* ---------- 通用细节 ---------- */
.page-news .muted {
  color: var(--c-scale);
}

.page-news .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

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

.page-news :focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.page-news {
  --c-batch: currentColor;
}