/* ============================================
   坐标日志 / 页面专属样式
   作用域：.page-news
   ============================================ */

.page-news {
  --rail-w: 252px;
  --tick: rgba(11, 59, 90, 0.16);
  --stream-gap: 34px;
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

.page-news [id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* ---------- 栏目标识 ---------- */

.page-news .news-masthead {
  position: relative;
  padding: calc(var(--header-h) + 40px) 0 0;
  background:
    repeating-linear-gradient(
      90deg,
      var(--grid-line) 0 1px,
      transparent 1px 84px
    ),
    linear-gradient(180deg, rgba(11, 59, 90, 0.055), rgba(253, 251, 247, 0) 68%),
    var(--paper);
}

.page-news .news-masthead .breadcrumb {
  margin-bottom: 30px;
}

.page-news .masthead-text {
  max-width: 780px;
}

.page-news .masthead-text h1 {
  margin: 16px 0 20px;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.028em;
  font-weight: 900;
  color: var(--blue);
  max-width: 16ch;
  text-wrap: balance;
}

.page-news .masthead-lede {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink);
}

.page-news .masthead-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* 数据条 */

.page-news .news-ledger {
  list-style: none;
  margin: 46px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--grid);
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
}

.page-news .news-ledger__item {
  background: var(--paper);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-news .news-ledger__v {
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 700;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-news .news-ledger__item:first-child .news-ledger__v {
  color: var(--orange);
}

.page-news .news-ledger__k {
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray);
}

/* 头图 */

.page-news .masthead-figure {
  margin: 44px 0 0;
}

.page-news .masthead-figure .figure__media {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  overflow: hidden;
}

.page-news .masthead-figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .figure__img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主分屏：左筛选刻度 + 右条目流 ---------- */

.page-news .news-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  padding-top: 60px;
  padding-bottom: 84px;
}

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

.page-news .rail-ruler {
  height: 9px;
  margin-bottom: 20px;
  border-top: 1px solid var(--tick);
  background-image: repeating-linear-gradient(
    90deg,
    var(--tick) 0 1px,
    transparent 1px 16px
  );
}

.page-news .rail-title {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 600;
}

.page-news .filter-group {
  border-top: 1px solid var(--grid);
  padding: 16px 0 18px;
}

.page-news .filter-group__title {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--gray);
}

.page-news .filter-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-news .filter-chip {
  appearance: none;
  display: inline-block;
  margin: 0;
  padding: 5px 11px;
  border: 1px solid var(--grid);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--gray);
  cursor: pointer;
  transition:
    border-color 180ms var(--ease),
    background-color 180ms var(--ease),
    color 180ms var(--ease);
}

.page-news .filter-chip:hover {
  border-color: var(--orange);
  color: var(--blue);
}

.page-news .filter-chip:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

.page-news .filter-chip[aria-pressed="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--paper);
}

.page-news .rail-note {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--grid);
  font-size: 13px;
  line-height: 1.72;
  color: var(--gray);
}

.page-news .rail-note a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 180ms var(--ease);
}

.page-news .rail-note a:hover {
  color: var(--orange);
}

/* ---------- 条目流 ---------- */

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

.page-news .stream-head {
  margin-bottom: 12px;
}

.page-news .stream-head h2 {
  margin: 10px 0 12px;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--blue);
  font-weight: 900;
}

.page-news .stream-lede {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

.page-news .entry-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  counter-reset: entry;
}

.page-news .entry {
  position: relative;
  padding: 24px 0 24px 20px;
  border-bottom: 1px solid var(--grid);
}

.page-news .entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 30px;
  width: 2px;
  height: 8px;
  background: var(--grid);
  transition:
    height 220ms var(--ease),
    background-color 220ms var(--ease);
}

.page-news .entry:hover::before,
.page-news .entry:focus-within::before {
  height: 30px;
  background: var(--orange);
}

.page-news .entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.page-news .entry__cat {
  padding: 2px 8px;
  border: 1px solid rgba(255, 107, 53, 0.42);
  border-radius: 3px;
  color: var(--orange);
  font-weight: 600;
}

.page-news .entry__coord {
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--blue-light);
  color: var(--blue);
}

.page-news .entry__time {
  color: var(--gray);
}

.page-news .entry__time::before {
  content: "·";
  margin-right: 6px;
  color: var(--grid);
}

.page-news .entry__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: -0.012em;
  font-weight: 700;
  color: var(--blue);
  transition: color 180ms var(--ease);
}

.page-news .entry:hover .entry__title {
  color: var(--orange);
}

.page-news .entry__sum {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

/* 后半段条目更舒展 */

.page-news .entry--lead {
  padding-top: 32px;
  padding-bottom: 32px;
}

.page-news .entry--lead .entry__title {
  font-size: 21px;
  line-height: 1.42;
}

.page-news .entry--lead .entry__sum {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  max-width: 62ch;
}

/* ---------- 全宽专题卡（节奏停顿） ---------- */

.page-news .feature-card {
  position: relative;
  margin: 34px 0;
  padding: 30px 24px 28px;
  background: var(--cream);
  border: 2px solid var(--blue);
  border-radius: var(--radius);
}

.page-news .feature-card::after {
  content: "";
  position: absolute;
  right: -2px;
  top: -2px;
  width: 46px;
  height: 46px;
  border-top: 2px solid var(--orange);
  border-right: 2px solid var(--orange);
  border-radius: 0 var(--radius) 0 0;
  pointer-events: none;
}

.page-news .feature-card__title {
  margin: 12px 0 12px;
  font-size: clamp(20px, 3.4vw, 27px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--blue);
  font-weight: 900;
  max-width: 24ch;
}

.page-news .feature-card__lede {
  margin: 0 0 18px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-news .feature-card__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: color 180ms var(--ease);
}

.page-news .feature-card__link:hover {
  color: var(--blue);
}

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

/* ---------- 行业坐标索引 ---------- */

.page-news .news-index {
  background: var(--cream);
  padding: 72px 0 80px;
  border-top: 1px solid var(--grid);
}

.page-news .news-index .section-head h2,
.page-news .news-series .section-head h2,
.page-news .news-versions .section-head h2 {
  margin: 10px 0 14px;
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.024em;
  color: var(--blue);
  font-weight: 900;
  max-width: 22ch;
}

.page-news .section-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--gray);
}

.page-news .index-figure {
  margin: 34px 0 0;
  max-width: 620px;
}

.page-news .index-figure .figure__media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--grid);
}

.page-news .index-wall {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-news .index-cell {
  position: relative;
  padding: 18px 18px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(11, 59, 90, 0.1);
  background: rgba(11, 59, 90, 0.04);
  transition:
    border-color 220ms var(--ease),
    transform 220ms var(--ease);
}

.page-news .index-cell[data-density="mid"] {
  background: rgba(11, 59, 90, 0.085);
}

.page-news .index-cell[data-density="high"] {
  background: rgba(11, 59, 90, 0.145);
}

.page-news .index-cell::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  height: 2px;
  width: 34px;
  background: var(--orange);
}

.page-news .index-cell[data-density="mid"]::before {
  width: 54px;
}

.page-news .index-cell[data-density="high"]::before {
  width: 78px;
}

.page-news .index-cell:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}

.page-news .index-cell__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.page-news .index-cell__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--blue);
}

.page-news .index-cell__count {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-news .index-cell[data-density="high"] .index-cell__count {
  color: var(--orange);
}

.page-news .index-cell__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-news .index-cell__tags li {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  padding: 3px 8px;
  border-radius: 3px;
  background: rgba(253, 251, 247, 0.72);
  color: var(--gray);
}

/* ---------- 长期专题 ---------- */

.page-news .news-series {
  padding: 76px 0 84px;
  background: var(--paper);
}

.page-news .series-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: end;
}

.page-news .series-figure {
  margin: 0;
  max-width: 340px;
}

.page-news .series-figure .figure__media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--grid);
}

.page-news .series-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-news .series-card {
  display: flex;
  flex-direction: column;
  padding: 26px 22px 22px;
  background: var(--paper);
  border: 1px solid var(--grid);
  border-top: 3px solid var(--blue);
  border-radius: 0 0 var(--radius) var(--radius);
  transition:
    border-color 220ms var(--ease),
    background-color 220ms var(--ease);
}

.page-news .series-card:hover {
  border-color: var(--orange);
  border-top-color: var(--orange);
  background: var(--cream);
}

.page-news .series-card__head {
  margin-bottom: 12px;
}

.page-news .series-card__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  font-weight: 600;
}

.page-news .series-card__title {
  margin: 8px 0 10px;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--blue);
}

.page-news .series-card__meta {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-news .series-card__desc {
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--gray);
}

.page-news .series-card .panel {
  margin-top: auto;
}

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

.page-news .series-list li {
  position: relative;
  padding: 9px 0 9px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  border-bottom: 1px dashed var(--grid);
}

.page-news .series-list li:last-child {
  border-bottom: 0;
}

.page-news .series-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

/* ---------- 版本时间轴 ---------- */

.page-news .news-versions {
  padding: 76px 0 88px;
  background:
    linear-gradient(180deg, rgba(11, 59, 90, 0.035), rgba(11, 59, 90, 0) 40%),
    var(--cream);
  border-top: 1px solid var(--grid);
}

.page-news .versions-figure {
  margin: 36px 0 0;
}

.page-news .versions-figure .figure__media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--grid);
}

.page-news .timeline {
  list-style: none;
  margin: 46px 0 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--tick);
}

.page-news .timeline__item {
  position: relative;
  padding-bottom: 40px;
}

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

.page-news .timeline__node {
  position: absolute;
  left: -27px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--cream);
}

.page-news .timeline__item:not(:first-child) .timeline__node {
  background: var(--paper);
  border: 2px solid var(--blue);
  width: 9px;
  height: 9px;
}

.page-news .timeline__ver {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 10px;
}

.page-news .timeline__item:first-child .timeline__ver {
  color: var(--orange);
  font-weight: 600;
}

.page-news .timeline__title {
  margin: 0 0 10px;
  font-size: clamp(18px, 3.4vw, 22px);
  line-height: 1.4;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--blue);
  max-width: 30ch;
}

.page-news .timeline__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--gray);
}

/* ---------- 订阅与投稿 ---------- */

.page-news .news-subscribe {
  padding: 76px 0 92px;
  background: var(--blue-deep);
}

.page-news .subscribe-panel {
  padding: 36px 24px 34px;
  border: 1px solid rgba(253, 251, 247, 0.16);
  border-radius: var(--radius-lg);
  background: rgba(253, 251, 247, 0.03);
}

.page-news .subscribe-panel__lead .label {
  color: rgba(253, 251, 247, 0.62);
}

.page-news .subscribe-panel__lead h2 {
  margin: 12px 0 16px;
  font-size: clamp(24px, 4.8vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.024em;
  font-weight: 900;
  color: var(--paper);
  max-width: 22ch;
}

.page-news .subscribe-panel__lead p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.84;
  color: rgba(253, 251, 247, 0.78);
}

.page-news .subscribe-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-news .subscribe-ways {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(253, 251, 247, 0.14);
  border-top: 1px solid rgba(253, 251, 247, 0.14);
  border-bottom: 1px solid rgba(253, 251, 247, 0.14);
}

.page-news .subscribe-way {
  background: var(--blue-deep);
  padding: 24px 20px 26px;
}

.page-news .subscribe-way__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  font-weight: 600;
  margin-bottom: 12px;
}

.page-news .subscribe-way__title {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--paper);
}

.page-news .subscribe-way p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(253, 251, 247, 0.72);
}

/* ---------- 响应式：平板 ---------- */

@media (min-width: 640px) {
  .page-news .news-ledger {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

  .page-news .subscribe-panel {
    padding: 44px 36px 42px;
  }
}

/* ---------- 响应式：桌面分屏 ---------- */

@media (min-width: 960px) {
  .page-news .news-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 0 60px;
    align-items: start;
    padding-top: 74px;
    padding-bottom: 104px;
  }

  .page-news .rail-sticky {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    max-height: calc(100vh - var(--header-h) - 52px);
    overflow-y: auto;
    padding-right: 4px;
  }

  .page-news .series-head {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
  }

  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
    margin-top: 52px;
  }

  .page-news .index-wall {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }

  .page-news .index-figure {
    max-width: 700px;
  }

  .page-news .timeline {
    padding-left: 28px;
  }

  .page-news .timeline__node {
    left: -33px;
  }

  .page-news .entry {
    padding-left: 26px;
  }

  .page-news .entry--lead .entry__title {
    font-size: 23px;
  }
}

@media (min-width: 1200px) {
  .page-news .news-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 0 76px;
  }

  .page-news .index-wall {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .series-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .series-card__title {
    font-size: 18px;
  }
}