/* ===== 观察报告 / page-news ===== */

.page-news .rpt-head {
  position: relative;
  padding-block: 26px 46px;
  border-bottom: 1px solid var(--line-400);
}

.page-news .rpt-head-grid {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-news .rpt-head-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(36, 64, 95, .5) 1px, transparent 1px);
  background-size: 80px 100%;
  background-position: -1px 0;
  pointer-events: none;
}

.page-news .rpt-head-grid > * {
  position: relative;
  z-index: 1;
}

@media (min-width: 900px) {
  .page-news .rpt-head-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
  }
}

.page-news .rpt-head-copy .eyebrow {
  margin: 0;
}

.page-news .rpt-head h1 {
  margin: 12px 0 0;
  font-size: var(--f-3xl);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--text-primary);
  max-width: 15em;
}

.page-news .rpt-head .serif-line {
  margin: 16px 0 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: var(--f-sm);
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 34em;
}

.page-news .rpt-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-400);
}

@media (min-width: 640px) {
  .page-news .rpt-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .rpt-meta dt {
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-news .rpt-meta dd {
  margin: 5px 0 0;
  font-family: var(--mono);
  font-size: var(--f-xs);
  line-height: 1.5;
  color: var(--text-primary);
}

.page-news .rpt-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-news .rpt-head-media {
  margin: 0;
}

/* ---- 索引条 + 条目列表 ---- */

.page-news .rpt-body {
  padding-block: 44px 0;
}

.page-news .rpt-layout {
  display: grid;
  gap: 34px;
}

@media (min-width: 960px) {
  .page-news .rpt-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
}

.page-news .rpt-rail {
  border-top: 2px solid var(--vermilion-500);
  padding-top: 14px;
}

@media (min-width: 960px) {
  .page-news .rpt-rail {
    position: sticky;
    top: calc(var(--header-space) + 18px);
  }
}

.page-news .rail-head {
  margin: 0 0 10px;
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-news .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line-400);
}

.page-news .rail-link {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: var(--f-sm);
  line-height: 1.4;
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .rail-link::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--vermilion-500);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform .2s var(--ease);
}

.page-news .rail-link:hover,
.page-news .rail-link:focus-visible {
  color: var(--text-primary);
  background: var(--ink-800);
}

.page-news .rail-link:hover::before,
.page-news .rail-link:focus-visible::before {
  transform: scaleY(1);
}

.page-news .rail-count {
  font-family: var(--mono);
  font-size: var(--f-2xs);
  color: var(--gold-400);
  white-space: nowrap;
}

.page-news .rail-note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-400);
  font-size: var(--f-2xs);
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---- 阶段分组 ---- */

.page-news .stage {
  margin-bottom: 54px;
  scroll-margin-top: calc(var(--header-space) + 24px);
}

.page-news .stage:last-of-type {
  margin-bottom: 40px;
}

.page-news .stage-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line-400);
}

.page-news .stage-num {
  font-family: var(--mono);
  font-weight: 500;
  font-size: var(--f-xl);
  line-height: 1;
  color: var(--gold-400);
  letter-spacing: -.02em;
}

.page-news .stage-num::after {
  content: "";
  display: inline-block;
  width: 14px;
  height: 2px;
  margin-left: 12px;
  vertical-align: middle;
  background: var(--vermilion-500);
  transform: skewX(-12deg);
}

.page-news .stage:target .stage-num {
  color: var(--vermilion-500);
  font-weight: 700;
}

.page-news .stage-title {
  margin: 0;
  font-size: var(--f-lg);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--text-primary);
}

.page-news .stage-count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: var(--f-2xs);
  letter-spacing: .04em;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ---- 条目 ---- */

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

.page-news .rec {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 10px 16px 0;
  border-bottom: 1px solid var(--line-400);
  outline: none;
  cursor: default;
  transition: background-color .18s var(--ease);
}

@media (min-width: 780px) {
  .page-news .rec {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 22px;
    padding: 20px 14px 20px 4px;
  }
}

.page-news .rec:hover {
  background: var(--ink-800);
}

.page-news .rec:focus-visible {
  background: var(--ink-800);
  box-shadow: inset 2px 0 0 var(--vermilion-500);
}

.page-news .rec-no {
  font-family: var(--mono);
  font-size: var(--f-xs);
  font-variant-numeric: tabular-nums;
  text-align: right;
  letter-spacing: .02em;
  color: var(--text-muted);
  padding-top: 4px;
}

.page-news .rec-main {
  min-width: 0;
}

.page-news .rec-kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 7px;
}

.page-news .rec-stage {
  font-family: var(--mono);
  font-size: var(--f-2xs);
  letter-spacing: .04em;
  color: var(--text-muted);
  white-space: nowrap;
}

.page-news .rec-title {
  margin: 0;
  font-size: var(--f-md);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.005em;
  color: var(--text-primary);
}

.page-news .rec-body {
  margin: 9px 0 0;
  font-size: var(--f-sm);
  line-height: 1.75;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow: hidden;
  transition: color .18s var(--ease);
}

.page-news .rec:focus .rec-body,
.page-news .rec:focus-visible .rec-body,
.page-news .rec:focus-within .rec-body {
  display: block;
  -webkit-line-clamp: unset;
  line-clamp: unset;
  overflow: visible;
  color: var(--text-primary);
}

/* ---- 列表底部装饰带 ---- */

.page-news .rpt-strip {
  margin: 4px 0 56px;
}

/* ---- 专题系列 ---- */

.page-news .features {
  background: var(--ink-800);
  border-top: 1px solid var(--line-400);
  border-bottom: 1px solid var(--line-400);
  padding-block: 52px;
}

.page-news .feat-grid {
  display: grid;
  gap: 32px;
}

@media (min-width: 900px) {
  .page-news .feat-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 52px;
    align-items: center;
  }
}

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

.page-news .feat-title {
  margin: 10px 0 0;
  font-size: var(--f-2xl);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--text-primary);
}

.page-news .feat-intro {
  margin: 14px 0 0;
  font-size: var(--f-sm);
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 40em;
}

.page-news .feat-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-400);
}

.page-news .feat-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-400);
}

@media (min-width: 720px) {
  .page-news .feat-item {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
  }
}

.page-news .feat-no {
  font-family: var(--mono);
  font-size: var(--f-2xs);
  letter-spacing: .06em;
  color: var(--gold-400);
  padding-top: 4px;
}

.page-news .feat-text h3 {
  margin: 0;
  font-size: var(--f-sm);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-primary);
}

.page-news .feat-text p {
  margin: 6px 0 0;
  font-size: var(--f-xs);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-news .feat-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: var(--f-xs);
  letter-spacing: .04em;
  color: var(--vermilion-500);
  text-decoration: none;
  border: 1px solid var(--vermilion-500);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background-color .18s var(--ease), color .18s var(--ease);
  white-space: nowrap;
}

.page-news .feat-link:hover,
.page-news .feat-link:focus-visible {
  background: var(--vermilion-500);
  color: var(--ink-950);
}

/* ---- 归档说明 ---- */

.page-news .archive {
  padding-block: 52px;
}

.page-news .arch-grid {
  display: grid;
  gap: 32px;
}

@media (min-width: 900px) {
  .page-news .arch-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
}

.page-news .arch-title {
  margin: 10px 0 0;
  font-size: var(--f-xl);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--text-primary);
}

.page-news .arch-copy > p {
  margin: 16px 0 0;
  font-size: var(--f-sm);
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 34em;
}

.page-news .arch-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-400);
}

.page-news .arch-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-400);
}

@media (min-width: 560px) {
  .page-news .arch-list li {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
  }
}

.page-news .arch-key {
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--gold-400);
  white-space: nowrap;
}

.page-news .arch-val {
  font-size: var(--f-xs);
  line-height: 1.65;
  color: var(--text-primary);
}

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

/* ---- 相关栏目 ---- */

.page-news .rpt-links {
  padding-block: 28px 44px;
  border-top: 1px solid var(--line-400);
}

.page-news .rpt-links-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
}

.page-news .rpt-links-label {
  font-size: var(--f-2xs);
  letter-spacing: .08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-news .rpt-links a {
  font-size: var(--f-sm);
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--line-400);
  padding-bottom: 2px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-news .rpt-links a:hover,
.page-news .rpt-links a:focus-visible {
  color: var(--vermilion-500);
  border-bottom-color: var(--vermilion-500);
}

/* ---- 无障碍：减弱动效 ---- */

@media (prefers-reduced-motion: reduce) {
  .page-news .rail-link,
  .page-news .rail-link::before,
  .page-news .rec,
  .page-news .rec-body,
  .page-news .feat-link,
  .page-news .rpt-links a {
    transition: none;
  }
}