.page-news {
  --pn-gap: clamp(48px, 7vw, 96px);
  --pn-drawer: 236px;
  --pn-card: linear-gradient(180deg, rgba(19, 38, 58, .62), rgba(14, 29, 44, .38));
  display: block;
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(84px, 12vw, 144px) 0 clamp(28px, 4vw, 48px);
}

.page-news .news-hero .crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-news .hero-frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(24px, 4vw, 54px);
  background:
    radial-gradient(120% 150% at 84% -10%, rgba(63, 224, 208, .14), transparent 58%),
    radial-gradient(90% 120% at 4% 110%, rgba(255, 138, 60, .10), transparent 60%),
    linear-gradient(180deg, rgba(19, 38, 58, .82), rgba(10, 22, 34, .68));
  box-shadow:
    0 30px 70px -40px rgba(5, 16, 26, .95),
    inset 0 0 0 1px rgba(5, 16, 26, .55);
  overflow: hidden;
}

.page-news .hero-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(124, 138, 153, .07) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(124, 138, 153, .07) 0 1px, transparent 1px 48px);
  pointer-events: none;
}

.page-news .frame-mark {
  position: absolute;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--idx);
  padding: 4px 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
  background: rgba(5, 16, 26, .6);
}

.page-news .frame-mark-a {
  top: 14px;
  left: 18px;
}

.page-news .frame-mark-b {
  top: 14px;
  right: 18px;
}

.page-news .hero-frame .kicker {
  position: relative;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-news .hero-frame h1 {
  position: relative;
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--paper);
  max-width: 18ch;
}

.page-news .hero-frame .lede {
  position: relative;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  color: rgba(242, 239, 231, .82);
}

.page-news .hero-meta {
  position: relative;
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-news .hero-meta li {
  background: rgba(10, 22, 34, .8);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news .meta-key {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--idx);
  text-transform: uppercase;
}

.page-news .meta-val {
  font-size: 17px;
  font-weight: 600;
  color: var(--cyan);
}

/* ---------- 重点更新 ---------- */
.page-news .news-top {
  padding: var(--pn-gap) 0 clamp(40px, 6vw, 72px);
}

.page-news .section-head {
  max-width: 66ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-news .section-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.14;
  color: var(--paper);
}

.page-news .section-head p {
  margin: 12px 0 0;
  color: var(--rock);
}

.page-news .top-grid {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  grid-template-columns: 1fr;
}

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

.page-news .top-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 20px 20px 20px 18px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan);
  border-radius: var(--r-md);
  background: var(--pn-card);
  box-shadow: 0 22px 46px -38px rgba(5, 16, 26, .95);
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}

.page-news .top-item:hover {
  transform: translateY(-4px);
  border-color: var(--cyan-deep);
}

.page-news .top-no {
  font-size: 22px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-news .top-body h3 {
  margin: 0;
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: var(--paper);
  line-height: 1.45;
}

.page-news .top-body p {
  margin: 10px 0 14px;
  color: rgba(242, 239, 231, .76);
  font-size: 15px;
}

.page-news .top-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(19, 38, 58, .5);
}

.page-news .top-figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}

.page-news .top-figure .figure-caption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--rock);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 抽屉式列表 ---------- */
.page-news .news-feed {
  padding: clamp(40px, 6vw, 76px) 0 var(--pn-gap);
  border-top: 1px solid var(--line-soft);
}

.page-news .feed-layout {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  grid-template-columns: 1fr;
}

.page-news .feed-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

.page-news .feed-rail::-webkit-scrollbar {
  display: none;
}

.page-news .rail-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: rgba(19, 38, 58, .55);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: background .24s var(--ease), border-color .24s var(--ease), color .24s var(--ease);
}

.page-news .rail-tab-no {
  font-size: 12px;
  color: var(--idx);
}

.page-news .rail-tab:hover {
  border-color: var(--cyan-deep);
}

.page-news .rail-tab.is-active {
  background: rgba(110, 138, 94, .34);
  border-color: var(--cyan);
  color: var(--paper);
}

.page-news .rail-tab.is-active .rail-tab-no {
  color: var(--cyan);
}

.page-news .rail-note {
  display: none;
}

.page-news .feed-group {
  scroll-margin-top: 120px;
}

.page-news .feed-group + .feed-group {
  margin-top: clamp(34px, 5vw, 58px);
}

.page-news .group-head {
  margin-bottom: 18px;
  padding-left: 16px;
  border-left: 2px solid var(--cyan-deep);
}

.page-news .group-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.24rem, 2vw, 1.62rem);
  color: var(--paper);
}

.page-news .group-head p {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--rock);
  max-width: 58ch;
}

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

.page-news .feed-item {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 18px 18px 22px;
  margin-bottom: 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--pn-card);
  box-shadow: 0 20px 44px -38px rgba(5, 16, 26, .95);
  transition: transform .26s var(--ease), border-color .26s var(--ease);
}

.page-news .feed-item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(63, 224, 208, 0));
}

.page-news .feed-item:hover {
  transform: translateY(-3px);
  border-color: var(--cyan-deep);
}

.page-news .feed-no {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--idx);
  padding-top: 3px;
}

.page-news .feed-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-news .feed-meta .chip {
  font-size: 12px;
  letter-spacing: .06em;
  background: rgba(110, 138, 94, .3);
  border: 1px solid var(--cyan-deep);
  color: var(--paper);
}

.page-news .feed-time {
  font-size: 12px;
  color: var(--idx);
  letter-spacing: .05em;
}

.page-news .feed-body h4 {
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.5;
  color: var(--paper);
}

.page-news .feed-body > p {
  margin: 10px 0 0;
  font-size: 15px;
  color: rgba(242, 239, 231, .76);
  max-width: 62ch;
}

.page-news .feed-more {
  margin-top: 12px;
}

.page-news .feed-more > summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--cyan);
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  transition: background .24s var(--ease);
}

.page-news .feed-more > summary::-webkit-details-marker {
  display: none;
}

.page-news .feed-more > summary::before {
  content: "+";
  font-size: 14px;
  line-height: 1;
}

.page-news .feed-more[open] > summary::before {
  content: "–";
}

.page-news .feed-more > summary:hover {
  background: rgba(18, 151, 140, .16);
}

.page-news .feed-more p {
  margin: 12px 0 0;
  padding: 14px 16px;
  font-size: 14.5px;
  color: rgba(242, 239, 231, .74);
  background: rgba(5, 16, 26, .5);
  border-left: 2px solid var(--amber);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  max-width: 66ch;
}

.page-news .feed-back {
  margin: clamp(26px, 4vw, 40px) 0 0;
  text-align: right;
}

.page-news .back-top {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--idx);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 3px;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

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

/* ---------- 横向图像带 ---------- */
.page-news .news-banner {
  padding: 0 0 clamp(40px, 6vw, 72px);
}

.page-news .banner-figure {
  margin: 0;
  position: relative;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: rgba(10, 22, 34, .7);
  overflow: hidden;
}

.page-news .banner-figure img {
  display: block;
  width: 100%;
  height: clamp(180px, 26vw, 320px);
  object-fit: cover;
  opacity: .9;
}

.page-news .banner-figure .figure-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px clamp(16px, 4vw, 40px);
  font-size: 13px;
  color: rgba(242, 239, 231, .82);
  background: linear-gradient(180deg, rgba(10, 22, 34, 0), rgba(5, 16, 26, .86));
}

/* ---------- 版本说明归档 ---------- */
.page-news .news-archive {
  position: relative;
  padding: var(--pn-gap) 0;
  background: var(--paper);
  color: var(--ink);
  border-top: 2px solid var(--clay);
  border-bottom: 2px solid var(--clay);
}

.page-news .news-archive .section-head h2 {
  color: var(--ink);
}

.page-news .news-archive .section-head p {
  color: rgba(10, 22, 34, .68);
}

.page-news .news-archive .kicker {
  color: var(--clay);
}

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

.page-news .archive-figure {
  margin: 0;
  border: 1px solid rgba(196, 113, 74, .5);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(10, 22, 34, .9);
  max-width: 320px;
}

.page-news .archive-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-news .archive-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(10, 22, 34, .18);
}

.page-news .archive-line {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(10, 22, 34, .14);
  transition: background .24s var(--ease);
}

.page-news .archive-line:hover {
  background: rgba(196, 113, 74, .08);
}

.page-news .archive-key {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--clay);
}

.page-news .archive-body h3 {
  margin: 0;
  font-size: 1.02rem;
  color: var(--ink);
}

.page-news .archive-body p {
  margin: 6px 0 0;
  font-size: 14.5px;
  color: rgba(10, 22, 34, .7);
  max-width: 60ch;
}

.page-news .archive-cta {
  margin: clamp(22px, 3vw, 32px) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .news-archive .btn-ghost {
  border-color: rgba(10, 22, 34, .32);
  color: var(--ink);
  background: transparent;
}

.page-news .news-archive .btn-ghost:hover {
  border-color: var(--clay);
  background: rgba(196, 113, 74, .12);
}

/* ---------- 订阅与提醒 ---------- */
.page-news .news-sub {
  padding: var(--pn-gap) 0;
}

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

.page-news .sub-card {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3.4vw, 40px);
  background:
    radial-gradient(110% 130% at 90% 0%, rgba(255, 138, 60, .12), transparent 60%),
    var(--pn-card);
  box-shadow: inset 0 0 0 1px rgba(5, 16, 26, .5);
}

.page-news .sub-card h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.15;
  color: var(--paper);
}

.page-news .sub-card > p {
  margin: 12px 0 0;
  color: rgba(242, 239, 231, .78);
  max-width: 60ch;
}

.page-news .sub-points {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .sub-points li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: rgba(5, 16, 26, .42);
}

.page-news .sub-points .mono {
  font-size: 13px;
  color: var(--cyan);
  padding-top: 3px;
}

.page-news .sub-points h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--paper);
}

.page-news .sub-points p {
  margin: 6px 0 0;
  font-size: 14.5px;
  color: rgba(242, 239, 231, .72);
}

.page-news .sub-note {
  font-size: 14px;
  color: var(--rock);
  border-left: 2px solid var(--amber);
  padding-left: 14px;
}

.page-news .sub-note .mono {
  color: var(--paper);
  word-break: break-all;
}

.page-news .sub-cta {
  margin: clamp(20px, 3vw, 28px) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .sub-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(19, 38, 58, .5);
}

.page-news .sub-figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}

.page-news .sub-figure .figure-caption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--rock);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .hero-meta {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news .archive-line {
    grid-template-columns: 96px 1fr;
    gap: 20px;
    align-items: start;
  }

  .page-news .archive-key {
    padding-top: 4px;
  }
}

@media (min-width: 900px) {
  .page-news .top-grid {
    grid-template-columns: 1.3fr .7fr;
    align-items: start;
  }

  .page-news .feed-layout {
    grid-template-columns: var(--pn-drawer) minmax(0, 1fr);
  }

  .page-news .feed-rail {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
    position: sticky;
    top: 116px;
    align-self: start;
  }

  .page-news .rail-tab {
    border-radius: var(--r-md);
    border-left: 2px solid transparent;
    padding: 12px 14px;
  }

  .page-news .rail-tab.is-active {
    border-left-color: var(--cyan);
  }

  .page-news .rail-note {
    display: block;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--line-soft);
  }

  .page-news .rail-note .mono {
    font-size: 12px;
    color: var(--idx);
    margin: 0 0 10px;
  }

  .page-news .rail-link {
    font-size: 13px;
    color: var(--cyan);
    text-decoration: none;
    border-bottom: 1px solid var(--line);
    padding-bottom: 2px;
  }

  .page-news .feed-item:nth-child(even) {
    margin-left: 16px;
  }

  .page-news .archive-grid {
    grid-template-columns: .32fr .68fr;
    align-items: start;
  }

  .page-news .sub-grid {
    grid-template-columns: 1.15fr .85fr;
    align-items: stretch;
  }
}

@media (min-width: 1180px) {
  .page-news .hero-frame h1 {
    max-width: 22ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .top-item,
  .page-news .feed-item,
  .page-news .rail-tab,
  .page-news .feed-more > summary {
    transition: none;
  }

  .page-news .top-item:hover,
  .page-news .feed-item:hover {
    transform: none;
  }
}