.page-news {
  --news-radius: 2px;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-news .news-hero {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  padding-block: clamp(1.25rem, 4vw, 2.5rem) clamp(2rem, 5vw, 3.5rem);
  align-items: end;
}

.page-news .news-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 7.2vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 0;
  color: var(--white);
  max-width: 18ch;
}

.page-news .news-hero .lede {
  margin-top: 1rem;
  max-width: 60ch;
}

.page-news .news-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 4vw, 2.5rem);
  margin-top: clamp(1.25rem, 3vw, 2rem);
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-news .hero-stat {
  display: grid;
  gap: 0.2rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--cyan);
}

.page-news .hero-stat__num {
  font-size: clamp(1.6rem, 5vw, 2.3rem);
  font-weight: 700;
  color: var(--yellow);
  line-height: 1;
}

.page-news .hero-stat__label {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-news .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-news .news-hero__media {
  margin: 0;
  min-width: 0;
}

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

/* 档案索引主区 + 右侧粘性目录 */
.page-news .archive-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.page-news .archive-main {
  min-width: 0;
}

.page-news .archive-aside {
  min-width: 0;
}

.page-news .toc-card {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.9rem;
}

.page-news .toc-card__title {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--orange-soft);
}

.page-news .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-news .toc-link {
  display: block;
  padding: 0.45rem 0;
  color: var(--white);
  text-decoration: none;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--line-soft);
  transition: color var(--dur) ease-out, border-color var(--dur) ease-out;
}

.page-news .toc-link:hover,
.page-news .toc-link:focus-visible {
  color: var(--yellow);
  border-bottom-color: var(--orange);
}

.page-news .toc-meta {
  display: grid;
  gap: 0.35rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--line-soft);
}

.page-news .toc-meta__line {
  margin: 0;
  font-size: 0.8rem;
  color: var(--mist);
}

.page-news .toc-meta__line .mono {
  color: var(--yellow);
  font-weight: 700;
  margin-right: 0.3rem;
}

.page-news .toc-copy {
  width: 100%;
  justify-content: center;
}

/* 顶部目录条 */
.page-news .filter-strip {
  display: grid;
  gap: 0.6rem;
  padding-bottom: clamp(1.25rem, 3vw, 2rem);
  border-bottom: 1px solid var(--line);
}

.page-news .filter-strip__label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--mist);
  text-transform: uppercase;
}

.page-news .filter-list {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.35rem;
  scrollbar-width: thin;
}

.page-news .filter-chip {
  flex: 0 0 auto;
  padding: 0.45rem 1.1rem 0.45rem 0.9rem;
  background: var(--ink-800);
  border: 1px solid var(--line);
  color: var(--white);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: background var(--dur) ease-out, color var(--dur) ease-out;
}

.page-news .filter-chip:hover,
.page-news .filter-chip:focus-visible {
  background: var(--orange);
  color: var(--ink-900);
  border-color: var(--orange);
}

.page-news .section {
  padding-top: clamp(2rem, 5vw, 3.5rem);
}

.page-news .section--tight {
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-news .section-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.6vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 0;
  color: var(--white);
  max-width: 22ch;
}

.page-news .section-head .lede {
  margin-top: 0.85rem;
  max-width: 62ch;
}

.page-news .case-figure {
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
}

.page-news .scene-figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  max-width: 420px;
}

/* 案例行 */
.page-news .case-list {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news .case-item {
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  transition: border-color var(--dur) ease-out, background var(--dur) ease-out;
}

.page-news .case-item:hover {
  border-left-color: var(--orange);
  background: rgba(13, 33, 54, 0.55);
}

.page-news .case-item details {
  padding: 0.2rem 0 0.2rem 0.6rem;
}

.page-news .case-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 0.7rem;
  padding: 0.85rem 0;
  cursor: pointer;
  list-style: none;
  color: var(--white);
}

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

.page-news .case-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--cyan);
  line-height: 1;
}

.page-news .case-item details[open] summary::after {
  content: "−";
  color: var(--yellow);
}

.page-news .case-item__no {
  background: var(--orange);
  color: var(--ink-900);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.18rem 0.45rem;
}

.page-news .case-item__title {
  flex: 1 1 14ch;
  min-width: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 3.2vw, 1.18rem);
  line-height: 1.4;
  letter-spacing: -0.005em;
}

.page-news .case-item details[open] .case-item__title {
  color: var(--yellow);
}

.page-news .case-item__body {
  padding: 0 0 1.1rem;
  max-width: 66ch;
}

.page-news .case-item__body p {
  margin: 0;
  color: var(--mist);
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-news .case-item__fields {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-news .case-item__fields li {
  font-size: 0.72rem;
  color: var(--cyan);
  border: 1px dashed var(--line);
  padding: 0.22rem 0.55rem;
  letter-spacing: 0.02em;
}

/* 动态主题带 */
.page-news .feed-band {
  position: relative;
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 14px));
}

.page-news .feed-band img {
  width: 100%;
  aspect-ratio: 16 / 8;
}

.page-news .feed-band__label {
  position: absolute;
  left: 0;
  bottom: 0;
  background: var(--ink-900);
  color: var(--yellow);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.75rem;
}

.page-news .feed-list {
  list-style: none;
  margin: clamp(1rem, 3vw, 1.75rem) 0 0;
  padding: 0;
}

.page-news .feed-item {
  display: grid;
  gap: 0.4rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-soft);
}

.page-news .feed-item__meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.page-news .feed-item__time {
  font-size: 0.74rem;
  color: var(--yellow);
  letter-spacing: 0.06em;
}

.page-news .feed-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 3vw, 1.15rem);
  line-height: 1.45;
  color: var(--white);
}

.page-news .feed-item__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
  max-width: 64ch;
}

/* 场景索引 */
.page-news .scene-grid {
  display: grid;
  gap: 0.85rem;
  margin-top: clamp(1.25rem, 3vw, 1.75rem);
}

.page-news .scene-card {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.3rem;
  transition: transform var(--dur) ease-out, border-color var(--dur) ease-out;
}

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

.page-news .scene-card__count {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--yellow);
  line-height: 1;
}

.page-news .scene-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.02rem;
  color: var(--white);
  letter-spacing: 0.01em;
}

.page-news .scene-card__desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .section-tail {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  font-size: 0.92rem;
  color: var(--mist);
  line-height: 1.8;
}

.page-news .section-tail a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .section-tail a:hover,
.page-news .section-tail a:focus-visible {
  color: var(--yellow);
}

/* 引用与合作 */
.page-news .coop-band {
  background: linear-gradient(115deg, var(--ink-800) 0%, var(--ink-700) 100%);
  border-left: 4px solid var(--orange);
  padding: clamp(1.25rem, 4vw, 2.25rem);
  display: grid;
  gap: 0.75rem;
}

.page-news .coop-band h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.4vw, 2.1rem);
  line-height: 1.2;
  color: var(--white);
}

.page-news .coop-band p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .coop-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

/* 更新提醒 */
.page-news .ask-card {
  padding: clamp(1.25rem, 4vw, 2rem);
  display: grid;
  gap: 0.75rem;
  color: var(--ink-900);
}

.page-news .ask-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 4.2vw, 1.9rem);
  line-height: 1.2;
  color: var(--ink-900);
}

.page-news .ask-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ink-700);
  max-width: 62ch;
}

.page-news .ask-card .eyebrow {
  color: var(--orange);
}

.page-news .ask-card__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  padding: 0.75rem 0;
  border-top: 1px solid rgba(7, 19, 31, 0.18);
  border-bottom: 1px solid rgba(7, 19, 31, 0.18);
}

.page-news .ask-card__row .contact-row__label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--ink-700);
}

.page-news .ask-card__row .contact-row__value {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-900);
  word-break: break-all;
}

.page-news .ask-card .copy-btn {
  border-color: var(--ink-700);
  color: var(--ink-900);
}

.page-news .ask-card .copy-btn:hover,
.page-news .ask-card .copy-btn:focus-visible {
  background: var(--ink-900);
  color: var(--yellow);
  border-color: var(--ink-900);
}

.page-news .ask-card__note {
  font-size: 0.85rem;
  color: var(--ink-700);
}

.page-news .ask-card__note a {
  color: var(--ink-900);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .ask-card__note a:hover,
.page-news .ask-card__note a:focus-visible {
  color: var(--orange);
}

@media (min-width: 640px) {
  .page-news .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .filter-strip__label {
    margin-bottom: 0.15rem;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-news .archive-layout {
    grid-template-columns: minmax(0, 1fr) 236px;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-news .archive-aside {
    position: sticky;
    top: 6rem;
  }

  .page-news .case-item details {
    padding-left: 0.9rem;
  }

  .page-news .feed-item {
    grid-template-columns: 1fr;
    padding: 1.15rem 0;
  }
}

@media (min-width: 1100px) {
  .page-news .scene-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .scene-card:first-child {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .scene-card:hover {
    transform: none;
  }

  .page-news .filter-chip,
  .page-news .toc-link,
  .page-news .case-item {
    transition: none;
  }
}