.page-news {
  --news-gap: clamp(24px, 4vw, 48px);
  --news-line: rgba(168, 216, 206, 0.16);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: clamp(56px, 9vw, 112px);
  -webkit-font-smoothing: antialiased;
}

.page-news .news-crumb {
  padding-top: clamp(18px, 3.2vw, 34px);
}

.page-news .kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-news .kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.page-news h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  text-wrap: balance;
}

/* ---------- 首屏 ---------- */

.page-news .intro {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 56px) 0 clamp(36px, 5.5vw, 68px);
}

.page-news .intro::before {
  content: "";
  position: absolute;
  inset: -30% -25% auto 30%;
  height: 165%;
  background:
    radial-gradient(58% 68% at 72% 18%, rgba(63, 242, 208, 0.2), transparent 70%),
    radial-gradient(48% 58% at 18% 82%, rgba(255, 107, 53, 0.16), transparent 72%);
  transform: skewY(-9deg);
  pointer-events: none;
}

.page-news .intro::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(63, 242, 208, 0.55), rgba(255, 209, 102, 0.35), transparent 78%);
  pointer-events: none;
}

.page-news .intro-grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 56px);
}

.page-news .intro h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 4.2rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 16px 0 18px;
  max-width: 15em;
  text-wrap: balance;
}

.page-news .intro-text {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(242, 247, 244, 0.82);
}

.page-news .intro-stats {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: 18px 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--news-line);
}

.page-news .stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .stat-row .stat-figure {
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 2.4vw, 1.65rem);
  font-weight: 700;
  letter-spacing: 0;
  color: var(--yellow);
}

.page-news .stat-figure .unit {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 主体三栏 ---------- */

.page-news .news-shell {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding-top: clamp(24px, 4vw, 44px);
}

/* 分类索引 */

.page-news .cat-rail {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-news .rail-title {
  margin: 0;
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-news .rail-hint {
  margin: 0;
  max-width: 24ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .cat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.page-news .cat-input,
.page-news .topic-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
}

.page-news .cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: rgba(242, 247, 244, 0.78);
  cursor: pointer;
  transition: color 160ms var(--ease), background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-news .cat-chip .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

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

.page-news .cat-input:focus-visible + .cat-chip {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news:has(#cat-all:checked) label[for="cat-all"],
.page-news:has(#cat-ob:checked) label[for="cat-ob"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-deep);
}

.page-news:has(#cat-ver:checked) label[for="cat-ver"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-deep);
}

.page-news:has(#cat-use:checked) label[for="cat-use"] {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--ink-deep);
}

.page-news:has(#cat-culture:checked) label[for="cat-culture"] {
  background: var(--mist);
  border-color: var(--mist);
  color: var(--ink-deep);
}

/* 筛选：依赖 :has，不支持时全部条目照常呈现 */

.page-news:has(#cat-ob:checked) :is(.feature, .entry-card):not([data-cat="ob"]),
.page-news:has(#cat-ver:checked) :is(.feature, .entry-card):not([data-cat="ver"]),
.page-news:has(#cat-use:checked) :is(.feature, .entry-card):not([data-cat="use"]),
.page-news:has(#cat-culture:checked) :is(.feature, .entry-card):not([data-cat="culture"]) {
  display: none;
}

.page-news:has(.cat-input:not(#cat-all):checked) .entry-break {
  display: none;
}

/* 特写 */

.page-news .feature {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: clamp(330px, 58vw, 460px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--ink-deep);
  margin-bottom: clamp(30px, 5vw, 54px);
}

.page-news .feature-media {
  position: absolute;
  inset: 0;
}

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

.page-news .feature-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(3, 23, 18, 0.18) 0%, rgba(3, 23, 18, 0.9) 74%),
    linear-gradient(90deg, rgba(3, 23, 18, 0.72) 0%, rgba(3, 23, 18, 0) 62%);
}

.page-news .feature-body {
  position: relative;
  padding: clamp(20px, 4vw, 40px);
  max-width: 60ch;
}

.page-news .feature-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 2.6rem);
  line-height: 1.24;
  margin: 12px 0 12px;
  text-wrap: balance;
}

.page-news .feature .entry-summary {
  color: rgba(242, 247, 244, 0.82);
}

.page-news .feature .entry-meta {
  color: rgba(242, 247, 244, 0.68);
}

/* 标签与元信息 */

.page-news .entry-tag {
  display: inline-flex;
  align-items: center;
  margin: 0;
  padding: 4px 10px;
  border-radius: 2px;
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  background: rgba(63, 242, 208, 0.14);
  color: var(--cyan);
}

.page-news .entry-tag[data-tag="ver"] {
  background: rgba(255, 107, 53, 0.16);
  color: var(--orange-soft);
}

.page-news .entry-tag[data-tag="use"] {
  background: rgba(255, 209, 102, 0.16);
  color: var(--yellow);
}

.page-news .entry-tag[data-tag="culture"] {
  background: rgba(159, 247, 230, 0.14);
  color: var(--mist);
}

.page-news .entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-news .entry-meta .sep {
  color: rgba(168, 216, 206, 0.4);
}

/* 列表 */

.page-news .stream-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
}

.page-news .stream-head h2 {
  margin: 0;
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
}

.page-news .stream-head p {
  margin: 0;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-news .entry-card {
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news .entry-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.3vw, 1.35rem);
  line-height: 1.45;
  margin: 10px 0 8px;
  text-wrap: balance;
}

.page-news .entry-summary {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(242, 247, 244, 0.72);
}

.page-news .entry-more {
  margin-top: 10px;
  border-top: 1px dashed rgba(168, 216, 206, 0.18);
  padding-top: 6px;
}

.page-news .entry-more > summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

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

.page-news .entry-more > summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--orange);
}

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

.page-news .entry-more > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .entry-more p {
  margin: 6px 0 4px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 247, 244, 0.64);
}

.page-news .entry-break {
  margin: clamp(22px, 3.6vw, 34px) 0;
}

.page-news .entry-break img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 3px;
}

.page-news .entry-break figcaption {
  margin-top: 8px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* 右栏注释 */

.page-news .margin-notes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 18px 20px;
  align-content: start;
  padding-top: 16px;
  border-top: 1px solid var(--line-strong);
}

.page-news .note-block {
  display: grid;
  gap: 3px;
}

.page-news .note-label {
  margin: 0;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .note-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--yellow);
}

.page-news .note-copy {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(242, 247, 244, 0.6);
}

.page-news .to-top {
  grid-column: 1 / -1;
  justify-self: start;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 242, 208, 0.4);
  padding-bottom: 2px;
}

.page-news .to-top:hover {
  color: var(--mist);
}

/* ---------- 专题 ---------- */

.page-news .topics {
  margin-top: clamp(48px, 7vw, 88px);
  padding-top: clamp(30px, 5vw, 52px);
  border-top: 1px solid var(--line-strong);
}

.page-news .topics-lead {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 247, 244, 0.72);
}

.page-news .topic-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 clamp(20px, 3.5vw, 32px);
}

.page-news .topic-tab {
  display: grid;
  gap: 2px;
  min-width: 148px;
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  background: rgba(168, 216, 206, 0.05);
  cursor: pointer;
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease);
}

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

.page-news .topic-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-news .topic-name {
  font-family: var(--font-label);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-news:has(#topic-a:checked) label[for="topic-a"],
.page-news:has(#topic-b:checked) label[for="topic-b"],
.page-news:has(#topic-c:checked) label[for="topic-c"] {
  background: rgba(63, 242, 208, 0.12);
  border-color: var(--cyan);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-news .topic-input:focus-visible + .topic-tab {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .topic-panel {
  display: none;
  gap: clamp(20px, 3.4vw, 40px);
  padding-left: clamp(14px, 3vw, 26px);
  border-left: 2px solid rgba(63, 242, 208, 0.45);
}

.page-news .topic-panel[data-topic="a"] {
  display: grid;
}

.page-news:has(.topic-input:checked) .topic-panel {
  display: none;
}

.page-news:has(#topic-a:checked) .topic-panel[data-topic="a"],
.page-news:has(#topic-b:checked) .topic-panel[data-topic="b"],
.page-news:has(#topic-c:checked) .topic-panel[data-topic="c"] {
  display: grid;
}

.page-news .topic-intro h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  line-height: 1.4;
  margin: 0 0 8px;
}

.page-news .topic-intro p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(242, 247, 244, 0.7);
}

.page-news .topic-media {
  margin: 16px 0 0;
}

.page-news .topic-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
  border-radius: 3px;
}

.page-news .topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  align-content: start;
}

.page-news .topic-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--news-line);
  font-size: 15px;
  line-height: 1.6;
}

.page-news .topic-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.page-news .topic-item {
  min-width: 0;
  color: rgba(242, 247, 244, 0.86);
}

.page-news .topic-time {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- 编辑方法 ---------- */

.page-news .method {
  margin-top: clamp(48px, 8vw, 92px);
  padding: clamp(34px, 6vw, 64px) 0;
  background: var(--ink-deep);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}

.page-news .method-grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-news .method-media {
  margin: 0;
}

.page-news .method-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 3px;
}

.page-news .method-lead {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 247, 244, 0.74);
}

.page-news .method-points {
  display: grid;
  gap: 18px;
  margin: 26px 0 0;
}

.page-news .method-points > div {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid rgba(63, 242, 208, 0.35);
}

.page-news .method-points dt {
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-news .method-points dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(242, 247, 244, 0.72);
}

/* ---------- 结尾入口 ---------- */

.page-news .cta-band {
  display: grid;
  gap: 24px;
  margin-top: clamp(44px, 7vw, 80px);
  padding: clamp(26px, 5vw, 46px);
  border: 1px solid rgba(63, 242, 208, 0.3);
  border-radius: 4px;
  background:
    linear-gradient(135deg, rgba(63, 242, 208, 0.1), rgba(255, 107, 53, 0.08)),
    var(--ink-deep);
}

.page-news .cta-copy p {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 247, 244, 0.76);
}

.page-news .cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
}

.page-news .cta-link {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 242, 208, 0.4);
  padding-bottom: 2px;
}

.page-news .cta-link:hover {
  color: var(--mist);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .topic-panel {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

@media (min-width: 900px) {
  .page-news .intro-grid {
    grid-template-columns: minmax(0, 7.5fr) minmax(0, 4fr);
    align-items: end;
  }

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

  .page-news .cta-band {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-news .news-shell {
    grid-template-columns: 186px minmax(0, 1fr) 196px;
    align-items: start;
  }

  .page-news .cat-rail {
    position: sticky;
    top: calc(var(--nav-h) + 28px);
  }

  .page-news .margin-notes {
    position: sticky;
    top: calc(var(--nav-h) + 28px);
    grid-template-columns: 1fr;
  }

  .page-news .cat-chips {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: flex-start;
  }

  .page-news .cat-chip {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (min-width: 1200px) {
  .page-news .news-shell {
    grid-template-columns: 200px minmax(0, 1fr) 220px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .cat-chip,
  .page-news .topic-tab {
    transition: none;
  }
}