.page-news {
  padding-top: var(--header-space);
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-news .pn-hero {
  position: relative;
  padding-block: clamp(26px, 4.5vw, 50px) clamp(44px, 6vw, 76px);
}
.page-news .pn-hero::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  bottom: 0;
  width: clamp(84px, 18vw, 220px);
  height: 3px;
  background: var(--cyan);
  transform: skewX(-24deg);
  transform-origin: left bottom;
}
.page-news .pn-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 48px);
  margin-top: clamp(20px, 3vw, 30px);
}
.page-news .pn-hero__lead {
  min-width: 0;
}
.page-news .pn-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-news .pn-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6.4vw, 74px);
  line-height: 1.05;
  letter-spacing: .005em;
  margin: 12px 0 18px;
  text-wrap: balance;
}
.page-news .pn-hero__side {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--ink-800);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: 0 22px 48px -34px rgba(0, 0, 0, .95);
}
.page-news .pn-hero__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--text-dim);
}
.page-news .pn-hero__num {
  display: block;
  margin: 8px 0 0;
  font-size: clamp(52px, 9vw, 84px);
  line-height: .94;
  letter-spacing: -.02em;
  color: var(--amber);
}
.page-news .pn-hero__unit {
  display: block;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--text-dim);
}
.page-news .pn-hero__spark {
  display: block;
  width: 100%;
  height: 44px;
  margin-top: 16px;
}
.page-news .pn-hero__spark polyline {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.page-news .pn-hero__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

/* ---------- 章节通用 ---------- */
.page-news .pn-section {
  padding-block: clamp(46px, 6.5vw, 84px);
  border-top: 1px solid var(--line-soft);
}
.page-news .pn-section .ly-sechead {
  margin-bottom: clamp(22px, 3vw, 30px);
}
.page-news .ly-media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--ink-800);
  object-fit: cover;
}

/* ---------- 笔记列表 ---------- */
.page-news .pn-legend {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
}
.page-news .pn-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}
.page-news .pn-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 22px) clamp(0px, 1.4vw, 16px);
  border-bottom: 1px solid var(--line-soft);
  transition: background-color var(--ease), box-shadow var(--ease);
}
.page-news .pn-item:hover,
.page-news .pn-item:focus-within {
  background-color: rgba(31, 227, 192, .06);
  box-shadow: inset 2px 0 0 var(--cyan);
}
.page-news .pn-item__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--text-dim);
  transition: color var(--ease);
}
.page-news .pn-item:hover .pn-item__no {
  color: var(--cyan);
}
.page-news .pn-item__body {
  min-width: 0;
}
.page-news .pn-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.page-news .pn-item__when {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--text-dim);
}
.page-news .pn-item__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
  letter-spacing: .005em;
  margin: 8px 0 6px;
}
.page-news .pn-item__sum {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--text-dim);
  max-height: 3.52em;
  overflow: hidden;
  transition: max-height var(--ease-slow), color var(--ease);
}
.page-news .pn-item:hover .pn-item__sum,
.page-news .pn-item:focus-within .pn-item__sum {
  max-height: 12em;
  color: var(--text);
}

/* ---------- 数据解读专栏 ---------- */
.page-news .pn-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}
.page-news .pn-split__body {
  min-width: 0;
}
.page-news .pn-steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}
.page-news .pn-steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}
.page-news .pn-steps li:last-child {
  border-bottom: 1px solid var(--line-soft);
}
.page-news .pn-steps__n {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 4px;
}
.page-news .pn-steps__t {
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-dim);
}
.page-news .pn-split__link {
  margin: 24px 0 0;
}

/* ---------- 测试版实测 ---------- */
.page-news .pn-test {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}
.page-news .pn-test__body {
  min-width: 0;
}
.page-news .pn-adopt {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-news .pn-adopt li {
  position: relative;
  padding-left: 24px;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--text-dim);
}
.page-news .pn-adopt li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 12px;
  height: 2px;
  background: var(--cyan);
  transform: skewX(-24deg);
}
.page-news .pn-test__link {
  margin: 24px 0 0;
}

/* ---------- 版本更新记录 ---------- */
.page-news .pn-ver__fig {
  margin-bottom: clamp(24px, 3vw, 32px);
}
.page-news .pn-vers {
  display: grid;
  gap: 12px;
}
.page-news .pn-ver {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color var(--ease);
}
.page-news .pn-ver:hover,
.page-news .pn-ver[open] {
  border-color: rgba(31, 227, 192, .55);
}
.page-news .pn-ver summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 16px clamp(15px, 2.4vw, 22px);
  cursor: pointer;
  list-style: none;
}
.page-news .pn-ver summary::-webkit-details-marker {
  display: none;
}
.page-news .pn-ver__no {
  flex: none;
  min-width: 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--amber);
}
.page-news .pn-ver__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: .01em;
}
.page-news .pn-ver__when {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--text-dim);
}
.page-news .pn-ver summary::after {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-left: 6px;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--ease-slow);
}
.page-news .pn-ver[open] summary::after {
  transform: rotate(-135deg) translate(-2px, -2px);
}
.page-news .pn-ver__body {
  padding: 0 clamp(15px, 2.4vw, 22px) 20px;
  border-top: 1px solid var(--line-soft);
}
.page-news .pn-ver__body ul {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-news .pn-ver__body li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.74;
  color: var(--text-dim);
}
.page-news .pn-ver__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 9px;
  height: 1.5px;
  background: rgba(31, 227, 192, .7);
}
.page-news .pn-ver__foot {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--text-dim);
}
.page-news .pn-ver__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 227, 192, .4);
  transition: color var(--ease), border-color var(--ease);
}
.page-news .pn-ver__foot a:hover,
.page-news .pn-ver__foot a:focus-visible {
  color: var(--cyan-bright);
  border-bottom-color: var(--cyan-bright);
}

/* ---------- 专题系列 ---------- */
.page-news .pn-topic__fig {
  margin-bottom: clamp(24px, 3vw, 32px);
}
.page-news .pn-topics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.page-news .pn-topic {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 26px);
  background: var(--ink-800);
  transition: background-color var(--ease);
}
.page-news .pn-topic:hover {
  background: var(--ink-700);
}
.page-news .pn-topic__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--amber);
}
.page-news .pn-topic h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.25;
}
.page-news .pn-topic p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--text-dim);
}
.page-news .pn-topic__meta {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-dim);
}

/* ---------- 投稿与线索 ---------- */
.page-news .pn-guide {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}
.page-news .pn-guide > li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: clamp(18px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color var(--ease);
}
.page-news .pn-guide > li:hover {
  background-color: rgba(31, 227, 192, .05);
}
.page-news .pn-guide__n {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 4px;
}
.page-news .pn-guide__body {
  min-width: 0;
}
.page-news .pn-guide h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.3;
}
.page-news .pn-guide p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--text-dim);
}
.page-news .pn-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .pn-item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 0 22px;
    align-items: start;
  }
  .page-news .pn-item__no {
    padding-top: 6px;
  }
}

@media (min-width: 780px) {
  .page-news .pn-topics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .pn-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
  .page-news .pn-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
  .page-news .pn-test {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }
  .page-news .pn-guide > li {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 22px;
  }
}

@media (min-width: 1080px) {
  .page-news .pn-topics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .pn-item,
  .page-news .pn-item__sum,
  .page-news .pn-item__no,
  .page-news .pn-ver,
  .page-news .pn-ver summary::after,
  .page-news .pn-topic,
  .page-news .pn-guide > li {
    transition: none;
  }
}
</main>