.page-news {
  --obs-rail-w: 236px;
  --obs-gap: clamp(20px, 3vw, 42px);
  --obs-block-gap: clamp(36px, 5vw, 72px);
  display: block;
}

/* ---------- 首屏 ---------- */

.page-news .obs-hero {
  position: relative;
  padding: clamp(24px, 4vw, 52px) 0 clamp(18px, 2.4vw, 30px);
  border-bottom: 1px solid var(--line-600);
}

.page-news .obs-hero .eyebrow {
  color: var(--cyan-400);
}

.page-news .obs-hero h1 {
  margin: 16px 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6vw, 66px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper-50);
}

.page-news .obs-hero h1::after {
  content: "";
  display: block;
  width: 92px;
  height: 4px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--gold-500), var(--cyan-400));
}

.page-news .obs-lede {
  margin: 18px 0 0;
  max-width: 66ch;
  font-size: 16.5px;
  line-height: 1.86;
  color: var(--mist-300);
}

.page-news .obs-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist-500);
  text-transform: uppercase;
}

.page-news .obs-hero-meta li {
  position: relative;
  padding-left: 16px;
}

.page-news .obs-hero-meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  margin-top: -3px;
  background: var(--cyan-400);
  transform: rotate(45deg);
}

.page-news .obs-hero-anno {
  display: none;
  position: absolute;
  right: 0;
  top: clamp(24px, 4vw, 52px);
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--mist-500);
}

@media (min-width: 1024px) {
  .page-news .obs-hero-anno {
    display: block;
  }
}

.page-news .obs-banner {
  margin-top: clamp(20px, 3vw, 34px);
}

/* ---------- 主体栅格 ---------- */

.page-news .obs-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--obs-gap);
  align-items: start;
  padding-top: var(--obs-block-gap);
}

@media (min-width: 1024px) {
  .page-news .obs-layout {
    grid-template-columns: var(--obs-rail-w) minmax(0, 1fr);
  }
}

.page-news .obs-rail-note {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-600);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist-500);
}

@media (min-width: 1024px) {
  .page-news .obs-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

.page-news .obs-stream {
  display: grid;
  gap: var(--obs-block-gap);
  min-width: 0;
}

/* ---------- 通用标题组 ---------- */

.page-news .obs-section,
.page-news .obs-band {
  min-width: 0;
}

.page-news .obs-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--paper-50);
}

.page-news .obs-head .eyebrow {
  color: var(--gold-300);
}

/* ---------- 读法说明 ---------- */

.page-news .obs-read-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-600);
  border: 1px solid var(--line-600);
}

@media (min-width: 760px) {
  .page-news .obs-read-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .obs-read-item {
  background: var(--ink-900);
  padding: clamp(20px, 2.4vw, 30px);
}

.page-news .obs-read-num {
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--gold-500);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold-500);
}

.page-news .obs-read-item h3 {
  margin: 16px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.3;
  color: var(--paper-50);
}

.page-news .obs-read-item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist-300);
}

/* ---------- 复盘条目 ---------- */

.page-news .obs-filter {
  margin-top: clamp(22px, 3vw, 32px);
}

.page-news .obs-filter .chip {
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-news .obs-log {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-600);
}

.page-news .obs-log-item {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px) 0 clamp(18px, 2.4vw, 26px) clamp(16px, 2vw, 26px);
  border-bottom: 1px solid var(--line-600);
  transition: background-color 160ms ease;
}

.page-news .obs-log-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(24px, 3vw, 34px);
  width: 8px;
  height: 1px;
  background: var(--line-600);
  transition: width 160ms ease, background-color 160ms ease;
}

.page-news .obs-log-item:hover::before,
.page-news .obs-log-item:focus-within::before {
  width: 15px;
  background: var(--cyan-400);
}

.page-news .obs-log-item[hidden] {
  display: none;
}

.page-news .obs-log-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-500);
}

.page-news .obs-log-round {
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold-300);
}

.page-news .obs-log-item h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.32;
}

.page-news .obs-log-item h3 a {
  color: var(--paper-50);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-news .obs-log-item h3 a:hover,
.page-news .obs-log-item h3 a:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-news .obs-log-item p {
  margin: 0;
  max-width: 74ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--mist-300);
}

.page-news .obs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .obs-tags li {
  padding: 3px 11px;
  border: 1px solid var(--line-600);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist-300);
}

/* ---------- 纸色区块：走势还原 ---------- */

.page-news .obs-band--paper {
  background: var(--paper-50);
  color: var(--ink-900);
  padding: clamp(30px, 4.5vw, 56px) clamp(18px, 3vw, 46px);
  clip-path: polygon(0 18px, 100% 0, 100% calc(100% - 18px), 0 100%);
}

.page-news .obs-band--paper .eyebrow {
  color: var(--vermilion-500);
}

.page-news .obs-band--paper .obs-head h2 {
  color: var(--ink-900);
}

.page-news .obs-band--paper .obs-lede {
  color: var(--green-800);
}

.page-news .obs-band--paper .figure__caption {
  color: var(--green-800);
}

.page-news .obs-flow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 38px);
  margin-top: clamp(24px, 3vw, 38px);
}

@media (min-width: 900px) {
  .page-news .obs-flow-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

.page-news .obs-nodes {
  position: relative;
  padding-left: 24px;
}

.page-news .obs-nodes::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--vermilion-500), var(--paper-200) 34%, var(--paper-200));
}

.page-news .obs-node {
  position: relative;
  border-bottom: 1px solid var(--paper-200);
}

.page-news .obs-node::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 18px;
  width: 9px;
  height: 9px;
  background: var(--paper-50);
  border: 1px solid var(--gold-500);
  transform: rotate(45deg);
  transition: background-color 160ms ease, border-color 160ms ease;
}

.page-news .obs-node[open]::before {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-news .obs-node-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 14px 4px 14px 0;
  cursor: pointer;
  list-style: none;
}

.page-news .obs-node-summary::-webkit-details-marker {
  display: none;
}

.page-news .obs-node-time {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--vermilion-500);
}

.page-news .obs-node-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.35;
  color: var(--ink-900);
}

.page-news .obs-node-body {
  padding: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--green-800);
}

.page-news .obs-node-body p {
  margin: 0;
}

.page-news .obs-slice {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .obs-slice li {
  padding: 4px 10px;
  border: 1px solid var(--paper-200);
  border-radius: var(--radius);
  background: rgba(8, 20, 15, 0.04);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

/* ---------- 轮换与替补 ---------- */

.page-news .obs-rotation {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 38px);
  margin-top: clamp(24px, 3vw, 38px);
}

@media (min-width: 900px) {
  .page-news .obs-rotation {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

.page-news .obs-dim-title {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist-500);
}

.page-news .obs-dim-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-600);
  border: 1px solid var(--line-600);
}

.page-news .obs-dim-list > li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  background: var(--ink-900);
  padding: clamp(14px, 1.8vw, 18px);
}

.page-news .obs-dim-list .mono {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
}

.page-news .obs-dim-list h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.35;
  color: var(--paper-50);
}

.page-news .obs-dim-list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist-300);
}

/* ---------- 阵容变动表格 ---------- */

.page-news .obs-table-wrap {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-news .obs-table a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid var(--line-600);
  transition: color 160ms ease, border-color 160ms ease;
}

.page-news .obs-table a:hover,
.page-news .obs-table a:focus-visible {
  color: var(--gold-300);
  border-bottom-color: var(--gold-300);
}

/* ---------- 口径说明 ---------- */

.page-news .obs-method-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 42px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-news .obs-method-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

.page-news .obs-method-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .obs-method-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist-300);
}

.page-news .obs-method-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 1px;
  background: var(--gold-500);
}

.page-news .obs-source {
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-600);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist-500);
}

/* ---------- 图片与响应式收尾 ---------- */

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

.page-news .obs-band--paper .figure {
  margin: 0;
}

@media (max-width: 719px) {
  .page-news .obs-hero h1 {
    max-width: 100%;
  }

  .page-news .obs-node-summary {
    padding-right: 0;
  }

  .page-news .obs-band--paper {
    clip-path: polygon(0 10px, 100% 0, 100% calc(100% - 10px), 0 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .obs-log-item,
  .page-news .obs-log-item::before,
  .page-news .obs-node::before,
  .page-news .obs-log-item h3 a {
    transition: none;
  }
}