.page-news {
  --news-side: 224px;
  --news-line: 1px solid var(--grid);
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: 76px;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  background: var(--ink-900);
  color: var(--paper);
  overflow: hidden;
  isolation: isolate;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(124, 143, 163, 0.18) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(124, 143, 163, 0.18) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: clamp(26px, 5vw, 62px);
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  z-index: 1;
  pointer-events: none;
}

.page-news .news-hero__inner {
  position: relative;
  z-index: 2;
  padding-top: clamp(26px, 5vw, 46px);
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-news .news-hero .crumbs {
  font-size: 13px;
  color: var(--mist);
}

.page-news .news-hero .crumbs a {
  color: var(--copper-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(224, 181, 127, 0.4);
}

.page-news .news-hero .crumbs a:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

.page-news .news-hero .crumbs .crumbs__sep {
  margin: 0 8px;
  color: var(--ink-500);
}

.page-news .news-hero .eyebrow {
  margin-top: clamp(24px, 4vw, 40px);
  color: var(--copper-light);
  letter-spacing: 0.18em;
  font-size: 11.5px;
}

.page-news .news-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(27px, 5.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--white);
  max-width: 20ch;
}

.page-news .news-hero .lede {
  margin-top: clamp(16px, 2.4vw, 24px);
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.85;
  color: rgba(246, 242, 233, 0.82);
  max-width: 62ch;
}

.page-news .news-hero__facts {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: clamp(16px, 2.4vw, 22px) 0 0;
  border-top: 1px solid rgba(124, 143, 163, 0.32);
  display: flex;
  flex-wrap: wrap;
  gap: 14px clamp(22px, 5vw, 56px);
}

.page-news .news-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.page-news .news-hero__fact .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper-light);
}

.page-news .news-hero__fact span:last-child {
  font-size: 15px;
  color: var(--paper);
  line-height: 1.5;
}

/* ---------- 双栏主体 ---------- */
.page-news .news-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 56px);
  padding-top: clamp(32px, 5vw, 58px);
}

.page-news .news-stream {
  min-width: 0;
}

.page-news .news-stream > * + * {
  margin-top: clamp(46px, 6vw, 86px);
}

/* ---------- 左侧分类索引 ---------- */
.page-news .news-side {
  min-width: 0;
}

.page-news .side-label {
  color: var(--copper);
  letter-spacing: 0.18em;
  font-size: 11.5px;
  margin-bottom: 12px;
}

.page-news .cat-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
}

.page-news .cat-nav__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 13px;
  background: var(--white);
  border: 1px solid var(--grid);
  color: var(--ink-700);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color var(--ease), color var(--ease), background-color var(--ease);
}

.page-news .cat-nav__item:hover,
.page-news .cat-nav__item:focus-visible {
  border-color: var(--copper);
  color: var(--copper);
}

.page-news .cat-nav__count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--mist);
}

.page-news .cat-nav__item:hover .cat-nav__count {
  color: var(--copper);
}

.page-news .side-note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--copper);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-news .side-cta {
  margin-top: 16px;
}

/* ---------- 章节标题 ---------- */
.page-news .sec-head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 3.1vw, 31px);
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--ink-900);
}

.page-news .sec-head .eyebrow {
  color: var(--copper);
  letter-spacing: 0.16em;
  font-size: 11.5px;
}

.page-news .sec-lede {
  margin-top: 12px;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
  max-width: 60ch;
}

/* ---------- 通用图像容器 ---------- */
.page-news .media {
  position: relative;
  overflow: hidden;
  background: var(--ink-700);
  border: 1px solid var(--grid);
}

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

.page-news .media--r169 { aspect-ratio: 16 / 9; }
.page-news .media--r53 { aspect-ratio: 5 / 3; }
.page-news .media--r127 { aspect-ratio: 12 / 7; }
.page-news .media--r11 { aspect-ratio: 1 / 1; }

/* ---------- 置顶公告 ---------- */
.page-news .announce-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  background: var(--white);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--copper);
  padding: clamp(20px, 3vw, 34px);
}

.page-news .announce-card .eyebrow {
  color: var(--signal);
  letter-spacing: 0.16em;
  font-size: 11.5px;
}

.page-news .announce-card h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.9vw, 29px);
  line-height: 1.32;
  color: var(--ink-900);
}

.page-news .announce-card__lede {
  margin-top: 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .announce-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-news .announce-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-700);
}

.page-news .announce-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 12px;
  height: 2px;
  background: var(--copper);
}

.page-news .announce-card__hint {
  margin-top: 18px;
  padding-left: 12px;
  border-left: 2px solid var(--celadon);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-news .announce-card__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-news .announce-card__media {
  align-self: stretch;
}

/* ---------- 更新日志 ---------- */
.page-news .log-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
  align-items: end;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-news .entry-list {
  border-bottom: var(--news-line);
}

.page-news .entry {
  border-top: var(--news-line);
}

.page-news .entry__row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 15px 2px 15px 0;
  list-style: none;
  cursor: pointer;
  transition: background-color var(--ease);
}

.page-news .entry__row::-webkit-details-marker { display: none; }
.page-news .entry__row::marker { content: ""; }

.page-news .entry__row::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 22px;
  width: 6px;
  height: 6px;
  background: var(--signal);
  opacity: 0;
  transition: opacity var(--ease);
}

.page-news .entry__row:hover::before,
.page-news .entry[open] .entry__row::before {
  opacity: 1;
}

.page-news .entry__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--copper);
}

.page-news .entry__title {
  flex: 1 1 240px;
  min-width: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-700);
  transition: color var(--ease);
}

.page-news .entry__row:hover .entry__title,
.page-news .entry[open] .entry__title {
  color: var(--copper);
}

.page-news .entry__time {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.page-news .entry__panel {
  padding: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  max-width: 68ch;
}

.page-news .entry__impact {
  margin-top: 12px;
  padding-left: 11px;
  border-left: 2px solid var(--copper);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--ink-500);
}

/* ---------- 栏目与内容更新 ---------- */
.page-news .col-list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.2vw, 22px);
}

.page-news .col-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--grid);
  padding: clamp(18px, 2.4vw, 26px) clamp(18px, 2.6vw, 28px);
  transition: transform var(--ease), border-color var(--ease);
}

.page-news .col-item:hover {
  transform: translateY(-2px);
  border-color: var(--copper);
}

.page-news .col-item__dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 3px;
  background: var(--celadon);
}

.page-news .col-item__body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-900);
}

.page-news .col-item__body p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text);
  max-width: 66ch;
}

.page-news .col-item__time {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 跨端与体验进展 ---------- */
.page-news .news-cross {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--paper);
  padding: clamp(24px, 3.6vw, 44px);
  isolation: isolate;
}

.page-news .news-cross::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(124, 143, 163, 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(124, 143, 163, 0.14) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.page-news .news-cross > * {
  position: relative;
  z-index: 1;
}

.page-news .news-cross .eyebrow {
  color: var(--copper-light);
  letter-spacing: 0.16em;
  font-size: 11.5px;
}

.page-news .news-cross h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 3.1vw, 30px);
  line-height: 1.3;
  color: var(--white);
}

.page-news .cross-lede {
  margin-top: 14px;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(246, 242, 233, 0.82);
  max-width: 60ch;
}

.page-news .cross-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(22px, 3vw, 32px);
  background: rgba(124, 143, 163, 0.28);
  border: 1px solid rgba(124, 143, 163, 0.28);
}

.page-news .cross-col {
  background: var(--ink-900);
  padding: clamp(16px, 2.4vw, 26px);
}

.page-news .cross-col__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper-light);
}

.page-news .cross-col--mob .cross-col__label {
  color: var(--celadon);
}

.page-news .cross-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-news .cross-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(246, 242, 233, 0.86);
}

.page-news .cross-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 9px;
  height: 9px;
  border-left: 1px solid var(--copper);
  border-bottom: 1px solid var(--copper);
}

.page-news .cross-col--mob .cross-list li::before {
  border-color: var(--celadon);
}

.page-news .news-cross__figure {
  margin-top: clamp(20px, 3vw, 30px);
  border-color: rgba(124, 143, 163, 0.32);
}

.page-news .media__caption,
.page-news .cross-foot {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(246, 242, 233, 0.62);
}

/* ---------- 运营观察专题 ---------- */
.page-news .feature-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
}

.page-news .feature-track {
  display: flex;
  gap: var(--gap);
  margin-top: clamp(20px, 3vw, 30px);
  padding: 4px 0 16px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.page-news .feature-track:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 4px;
}

.page-news .feature-card {
  flex: 0 0 min(80vw, 292px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--white);
  border: 1px solid var(--grid);
  border-top: 2px solid var(--copper);
  padding: 18px;
  transition: transform var(--ease), border-color var(--ease);
}

.page-news .feature-card:hover {
  transform: translateY(-2px);
  border-color: var(--copper);
}

.page-news .feature-card__cover {
  display: flex;
  align-items: flex-end;
  height: 86px;
  padding: 10px 12px;
  background: linear-gradient(135deg, var(--ink-700) 0%, var(--ink-900) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper-light);
}

.page-news .feature-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-news .feature-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text);
}

.page-news .feature-card__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 后续更新 ---------- */
.page-news .follow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-news .follow-card {
  display: flex;
  flex-direction: column;
  gap: 11px;
  background: var(--white);
  border: 1px solid var(--grid);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-news .follow-card__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-news .follow-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-news .follow-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text);
}

.page-news .follow-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

.page-news .follow-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--grid);
}

.page-news .follow-mail {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-700);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px solid var(--copper);
}

.page-news .follow-mail:hover {
  color: var(--copper);
}

.page-news .follow-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
}

/* ---------- 回到顶部 ---------- */
.page-news .backtop {
  position: fixed;
  right: clamp(12px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  background: var(--ink-900);
  color: var(--paper);
  border: 1px solid var(--copper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background-color var(--ease), color var(--ease);
}

.page-news .backtop:hover,
.page-news .backtop:focus-visible {
  background: var(--copper);
  color: var(--white);
}

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

  .page-news .follow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .col-item {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    column-gap: 20px;
  }

  .page-news .col-item__body {
    grid-column: 1;
  }

  .page-news .col-item__time {
    grid-column: 2;
    text-align: right;
    padding-top: 2px;
  }
}

@media (min-width: 860px) {
  .page-news .announce-card {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
  }

  .page-news .log-head {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.78fr);
  }

  .page-news .feature-intro {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
  }
}

@media (min-width: 900px) {
  .page-news .news-body {
    grid-template-columns: var(--news-side) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .news-side {
    position: sticky;
    top: 22px;
  }

  .page-news .cat-nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-top: var(--news-line);
  }

  .page-news .cat-nav__item {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    width: 100%;
    padding: 11px 2px;
    background: transparent;
    border: 0;
    border-bottom: var(--news-line);
  }

  .page-news .cat-nav__item:hover {
    background: transparent;
    padding-left: 6px;
  }

  .page-news .follow-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition: none !important;
    animation: none !important;
  }

  .page-news .col-item:hover,
  .page-news .feature-card:hover {
    transform: none;
  }
}