.page-news {
  background: var(--ink);
  color: var(--warm);
}

/* ===== 首屏 ===== */
.page-news .ins-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(16px, 3vw, 30px) 0 clamp(28px, 5vw, 60px);
  background:
    radial-gradient(130% 100% at 92% -10%, rgba(45, 245, 212, .18), transparent 58%),
    radial-gradient(90% 80% at -12% 110%, rgba(255, 107, 44, .16), transparent 62%),
    var(--ink);
}

.page-news .ins-hero::before {
  content: "";
  position: absolute;
  top: -32%;
  right: -10%;
  width: 44%;
  height: 150%;
  background: linear-gradient(180deg, rgba(45, 245, 212, .12), rgba(255, 107, 44, .08));
  transform: rotate(9deg);
  pointer-events: none;
  z-index: 0;
}

.page-news .ins-hero .container {
  position: relative;
  z-index: 1;
}

.page-news .ins-hero__crumbs {
  margin-bottom: clamp(16px, 2.6vw, 26px);
}

.page-news .ins-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
}

.page-news .ins-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 8.6vw, 5.2rem);
  line-height: .98;
  letter-spacing: -.02em;
}

.page-news .ins-hero__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-news .ins-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.78;
}

.page-news .ins-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-news .ins-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--teal), var(--ink-2));
}

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

.page-news .ins-hero__figure {
  aspect-ratio: 16 / 11;
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}

.page-news .ins-hero__figcap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: rgba(8, 26, 46, .82);
  color: var(--cyan);
  font-size: .7rem;
  letter-spacing: .1em;
  border-top-right-radius: var(--radius-sm);
}

/* ===== 本期索引 ===== */
.page-news .ins-index {
  padding: clamp(22px, 3.4vw, 36px) 0 clamp(30px, 5vw, 52px);
  border-bottom: 1px solid var(--line);
  background: var(--ink-3);
}

.page-news .ins-index__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.page-news .ins-index__hint {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--steel);
}

.page-news .ins-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-news .ins-index__link {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  height: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(15, 43, 73, .62);
  text-decoration: none;
  color: var(--warm);
  transition: border-color .18s ease, transform .18s ease;
}

.page-news .ins-index__link:hover,
.page-news .ins-index__link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-news .ins-index__num {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--cyan);
  padding-top: 3px;
}

.page-news .ins-index__title {
  display: block;
  font-size: .97rem;
  font-weight: 600;
  line-height: 1.5;
}

.page-news .ins-index__time {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--steel);
}

/* ===== 目录主体 ===== */
.page-news .ins-list {
  padding: clamp(34px, 6vw, 76px) 0;
}

.page-news .ins-list__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-news .ins-section-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4.2vw, 2.7rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--warm);
}

.page-news .ins-list__note {
  margin: 0;
  color: var(--steel);
  font-size: .92rem;
  line-height: 1.75;
}

.page-news .ins-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}

.page-news .ins-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .ins-rail__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .86rem;
  color: var(--mist);
}

.page-news .ins-rail__item .mono {
  color: var(--cyan);
  font-size: .74rem;
}

.page-news .ins-rail__note {
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(11, 93, 91, .3);
  border: 1px solid rgba(45, 245, 212, .24);
  font-size: .86rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-news .ins-rail__note p {
  margin: 0 0 10px;
}

.page-news .ins-rail__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 245, 212, .45);
  font-weight: 600;
}

.page-news .ins-feed {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.page-news .ins-feed__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 6px;
}

.page-news .ins-card {
  position: relative;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(15, 43, 73, .94), rgba(8, 26, 46, .94));
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.page-news .ins-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 3px;
  background: var(--cyan);
  opacity: 0;
  transition: opacity .2s ease;
}

.page-news .ins-card:hover,
.page-news .ins-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: 0 16px 36px rgba(0, 0, 0, .32);
}

.page-news .ins-card:hover::before,
.page-news .ins-card:focus-within::before {
  opacity: 1;
}

.page-news .ins-card__body {
  padding: clamp(16px, 2.3vw, 24px);
}

.page-news .ins-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .ins-card__time {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .07em;
  color: var(--steel);
}

.page-news .ins-card__title {
  margin: 10px 0 0;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.42;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--warm);
}

.page-news .ins-card__summary {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  margin: 8px 0 0;
  color: var(--steel);
  font-size: .92rem;
  line-height: 1.74;
}

.page-news .ins-card:hover .ins-card__summary,
.page-news .ins-card:focus-within .ins-card__summary {
  -webkit-line-clamp: 8;
}

.page-news .ins-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  color: var(--cyan);
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
}

.page-news .ins-card__link span {
  display: inline-block;
  transition: transform .2s ease;
}

.page-news .ins-card__link:hover span,
.page-news .ins-card__link:focus-visible span {
  transform: translateX(4px);
}

.page-news .ins-card--feature {
  background: linear-gradient(150deg, rgba(11, 93, 91, .5), rgba(8, 26, 46, .95));
}

.page-news .ins-card__thumb {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(140deg, var(--teal), var(--ink-2));
}

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

/* ===== 第 3 轮同步观察 ===== */
.page-news .ins-round {
  padding: clamp(38px, 6vw, 80px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-3), rgba(8, 26, 46, .96));
}

.page-news .ins-round__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-news .ins-round__text {
  margin: 16px 0 0;
  max-width: 52ch;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.8;
}

.page-news .ins-round__dims {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-news .ins-round__dim {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-news .ins-round__dim:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .ins-round__dimnum {
  font-size: .76rem;
  color: var(--orange);
  padding-top: 3px;
}

.page-news .ins-round__dim strong {
  display: block;
  font-size: .98rem;
  color: var(--warm);
}

.page-news .ins-round__dim p {
  margin: 5px 0 0;
  color: var(--steel);
  font-size: .88rem;
  line-height: 1.7;
}

.page-news .ins-round__cta {
  margin-top: 24px;
}

.page-news .ins-round__media {
  aspect-ratio: 10 / 7;
  border-radius: var(--radius);
}

/* ===== 更新日志 ===== */
.page-news .ins-log {
  padding: clamp(38px, 6vw, 80px) 0;
}

.page-news .ins-log__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-news .ins-log__media {
  aspect-ratio: 4 / 3;
  margin-top: 22px;
}

.page-news .ins-log__note {
  margin: 16px 0 0;
  color: var(--steel);
  font-size: .88rem;
  line-height: 1.75;
}

.page-news .ins-log__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  position: relative;
}

.page-news .ins-log__list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(255, 107, 44, .55));
}

.page-news .ins-log__item {
  position: relative;
  padding-bottom: 22px;
}

.page-news .ins-log__item:last-child {
  padding-bottom: 0;
}

.page-news .ins-log__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
}

.page-news .ins-log__stage {
  display: block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-news .ins-log__title {
  display: block;
  margin-top: 5px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--warm);
}

.page-news .ins-log__text {
  margin: 6px 0 0;
  color: var(--steel);
  font-size: .9rem;
  line-height: 1.74;
}

/* ===== 订阅与投稿 ===== */
.page-news .ins-subscribe {
  padding: clamp(38px, 6vw, 80px) 0;
  background: var(--warm);
  color: var(--ink);
}

.page-news .ins-subscribe__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 38px);
  align-items: center;
}

.page-news .ins-subscribe .eyebrow {
  color: #0B5D5B;
}

.page-news .ins-subscribe__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.2vw, 2.8rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-news .ins-subscribe__text {
  margin: 16px 0 0;
  max-width: 54ch;
  color: #3E5266;
  font-size: 1rem;
  line-height: 1.78;
}

.page-news .ins-subscribe__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-news .ins-btn-ink {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  background: transparent;
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  transition: background .2s ease, color .2s ease;
}

.page-news .ins-btn-ink:hover,
.page-news .ins-btn-ink:focus-visible {
  background: var(--ink);
  color: var(--warm);
}

.page-news .ins-subscribe__note {
  margin: 18px 0 0;
  color: #586B7D;
  font-size: .86rem;
  line-height: 1.75;
}

.page-news .ins-subscribe__note a {
  color: #0B5D5B;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .ins-subscribe__panel {
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--warm);
  border-left: 4px solid var(--orange);
}

.page-news .ins-subscribe__panel-title {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-news .ins-subscribe__stats {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .ins-subscribe__stats li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-news .ins-subscribe__stats li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-news .ins-subscribe__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  line-height: 1;
  color: var(--cyan);
}

.page-news .ins-subscribe__label {
  font-size: .85rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-news .ins-subscribe__panel-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--signal);
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
}

.page-news .ins-subscribe__panel-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-news .ins-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-news .ins-card--feature {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-news .ins-card--feature .ins-card__thumb {
    aspect-ratio: auto;
    height: 100%;
    min-height: 220px;
  }
}

@media (min-width: 900px) {
  .page-news .ins-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-news .ins-list__head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: 32px;
  }

  .page-news .ins-round__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

  .page-news .ins-log__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-news .ins-subscribe__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1000px) {
  .page-news .ins-index__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-news .ins-shell {
    grid-template-columns: minmax(0, 230px) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .ins-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-news .ins-rail__list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .page-news .ins-rail__item {
    border-radius: var(--radius-sm);
    border-color: transparent;
    border-bottom-color: var(--line);
    padding: 10px 4px;
  }

  .page-news .ins-card--stagger {
    margin-left: clamp(18px, 3vw, 46px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .ins-card,
  .page-news .ins-index__link,
  .page-news .ins-card__link span,
  .page-news .ins-btn-ink {
    transition: none;
  }

  .page-news .ins-card:hover,
  .page-news .ins-card:focus-within,
  .page-news .ins-index__link:hover {
    transform: none;
  }
}
<<<END>>>