.page-news {
  background: var(--warm);
  color: var(--ink);
  overflow-x: hidden;
}

.page-news .wrap {
  width: 100%;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding: calc(var(--header-h) + clamp(24px, 5vw, 56px)) 0 clamp(36px, 6vw, 76px);
  background:
    linear-gradient(180deg, rgba(13, 27, 51, 0.04) 0%, rgba(250, 246, 239, 0) 62%),
    var(--warm);
}

.page-news .news-hero-grid {
  display: grid;
  gap: 28px;
  margin-top: 20px;
}

.page-news .news-hero-lead h1 {
  margin: 12px 0 0;
  font-size: clamp(2.1rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 14em;
}

.page-news .news-lede {
  margin: 18px 0 0;
  font-size: var(--fs-18);
  line-height: 1.75;
  color: var(--slate);
  max-width: 42em;
}

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

.page-news .news-hero-jump .btn {
  text-decoration: none;
}

/* 置顶版本块 */
.page-news .news-pin {
  background: var(--red);
  color: #fff;
  padding: 26px 22px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-news .news-pin-label {
  margin: 0;
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.78);
}

.page-news .news-pin-title {
  margin: 10px 0 0;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-news .news-pin-title .mono {
  font-size: 1.08em;
}

.page-news .news-pin-list {
  margin: 20px 0 0;
  display: grid;
  gap: 10px;
}

.page-news .news-pin-row {
  display: grid;
  grid-template-columns: 5.5em 1fr;
  gap: 10px;
  align-items: baseline;
  padding-top: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.page-news .news-pin-row dt {
  font-size: var(--fs-14);
  color: rgba(255, 255, 255, 0.78);
}

.page-news .news-pin-row dd {
  margin: 0;
  font-size: var(--fs-18);
  font-weight: 700;
}

.page-news .news-pin-row .path {
  color: #fff;
  border-bottom-color: var(--cyan);
  font-size: var(--fs-16);
}

.page-news .news-pin-note {
  margin: 18px 0 0;
  font-size: var(--fs-16);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.9);
}

.page-news .news-pin-link {
  display: inline-block;
  margin-top: 16px;
  font-size: var(--fs-16);
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  border-bottom: 3px solid var(--cyan);
  padding-bottom: 2px;
}

.page-news .news-pin-link:hover,
.page-news .news-pin-link:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 更新记录区 ---------- */
.page-news .news-log {
  padding: clamp(28px, 4vw, 52px) 0 clamp(36px, 6vw, 80px);
}

.page-news .news-log-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  padding-bottom: 16px;
  border-bottom: 4px solid var(--ink);
}

.page-news .news-log-title {
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-news .news-log-sub {
  margin: 0;
  font-size: var(--fs-16);
  color: var(--slate);
}

.page-news .news-log-sub .mono {
  color: var(--red);
  font-size: var(--fs-18);
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}

.page-news .news-filter-label {
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--slate);
  margin-right: 4px;
}

.page-news .news-chip {
  display: inline-block;
  padding: 7px 14px;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  border: 2px solid var(--ink);
  background: var(--paper);
  transition: background 160ms var(--ease), color 160ms var(--ease);
}

.page-news .news-chip:hover,
.page-news .news-chip:focus-visible {
  background: var(--ink);
  color: var(--warm);
}

.page-news .news-chip--ver:hover,
.page-news .news-chip--ver:focus-visible {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.page-news .news-chip--cat:hover,
.page-news .news-chip--cat:focus-visible {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

.page-news .news-chip--topic:hover,
.page-news .news-chip--topic:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-news .news-log-banner {
  margin-top: 26px;
  border-left: 6px solid var(--red);
  background: var(--ink);
}

.page-news .news-log-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 6;
  object-fit: cover;
  opacity: 0.9;
}

.page-news .news-log-grid {
  display: grid;
  gap: 32px;
  margin-top: 34px;
}

/* 左栏：时间刻度 */
.page-news .news-rail {
  display: none;
}

.page-news .news-rail-figure {
  margin: 0 0 24px;
}

.page-news .news-rail-nav {
  display: grid;
  gap: 2px;
  border-top: 4px solid var(--ink);
  padding-top: 14px;
}

.page-news .news-rail-title {
  margin: 0 0 8px;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--slate);
  letter-spacing: 0.06em;
}

.page-news .news-rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: var(--fs-16);
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  border-left: 3px solid var(--line);
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-news .news-rail-link .mono {
  color: var(--red);
  font-size: var(--fs-14);
}

.page-news .news-rail-link:hover,
.page-news .news-rail-link:focus-visible {
  background: var(--paper);
  border-left-color: var(--cyan);
}

/* 右栏：条目流 */
.page-news .news-stream {
  display: grid;
  gap: clamp(34px, 5vw, 58px);
}

.page-news .news-group-head {
  position: sticky;
  top: var(--header-h);
  z-index: 2;
  background: var(--warm);
  padding: 12px 0 14px;
  border-bottom: 2px solid var(--ink);
}

.page-news .news-group-kicker {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.06em;
}

.page-news .news-group-kicker .mono {
  font-size: var(--fs-14);
}

.page-news .news-group-title {
  margin: 6px 0 0;
  font-size: clamp(1.35rem, 4.2vw, 2rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-news .news-group-note {
  margin: 8px 0 0;
  font-size: var(--fs-16);
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-items {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.page-news .news-item {
  padding: 20px 20px 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: border-color 160ms var(--ease), transform 240ms var(--ease);
}

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.page-news .news-item-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .news-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: var(--fs-14);
  font-weight: 700;
  line-height: 1.5;
}

.page-news .news-tag--ver {
  background: var(--red);
  color: #fff;
}

.page-news .news-tag--cat {
  background: var(--amber);
  color: var(--ink);
}

.page-news .news-tag--topic {
  background: var(--cyan);
  color: var(--ink);
}

.page-news .news-when {
  font-size: var(--fs-14);
  color: var(--slate);
}

.page-news .news-item-title {
  margin: 12px 0 0;
  font-size: var(--fs-22);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-news .news-item-summary {
  margin: 8px 0 0;
  font-size: var(--fs-16);
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-more {
  margin-top: 10px;
}

.page-news .news-more > summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--cyan-deep);
  border-bottom: 2px solid transparent;
}

.page-news .news-more > summary::-webkit-details-marker {
  display: none;
}

.page-news .news-more > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-16);
  line-height: 1;
}

.page-news .news-more[open] > summary::after {
  content: "–";
}

.page-news .news-more > summary:hover,
.page-news .news-more > summary:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-news .news-more-body {
  padding: 10px 0 4px;
  border-top: 1px solid var(--line);
  margin-top: 8px;
}

.page-news .news-more-body p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 章节头 ---------- */
.page-news .news-sec-head {
  border-top: 4px solid var(--ink);
  padding-top: 16px;
  margin-bottom: 26px;
}

.page-news .news-sec-index {
  margin: 0;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.1em;
}

.page-news .news-sec-title {
  margin: 8px 0 0;
  font-size: clamp(1.6rem, 5vw, 2.5rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-news .news-sec-note {
  margin: 12px 0 0;
  max-width: 46em;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 目录调整记录 ---------- */
.page-news .news-catalog {
  padding: clamp(34px, 5vw, 68px) 0;
  background: var(--ink);
  color: var(--warm);
}

.page-news .news-catalog .news-sec-head {
  border-top-color: var(--red);
}

.page-news .news-catalog .news-sec-index {
  color: var(--cyan);
}

.page-news .news-catalog .news-sec-title {
  color: var(--warm);
}

.page-news .news-catalog .news-sec-note {
  color: rgba(250, 246, 239, 0.72);
}

.page-news .news-catalog-grid {
  display: grid;
  gap: 26px;
}

.page-news .news-catalog-figure {
  margin: 0;
}

.page-news .news-changes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .news-change {
  display: grid;
  gap: 8px;
  padding: 16px 16px 16px 18px;
  background: var(--ink-2);
  border-left: 4px solid var(--red);
}

.page-news .news-change-kind {
  justify-self: start;
  padding: 2px 9px;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--ink);
}

.page-news .news-change-kind--merge {
  background: var(--red);
  color: #fff;
}

.page-news .news-change-kind--rename {
  background: var(--amber);
}

.page-news .news-change-kind--add {
  background: var(--cyan);
}

.page-news .news-change-desc {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.65;
  color: rgba(250, 246, 239, 0.92);
}

.page-news .news-change-to {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

.page-news .news-change-label {
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-news .news-change-to .path {
  color: var(--warm);
  font-size: var(--fs-16);
}

/* ---------- 使用专题 ---------- */
.page-news .news-topics {
  padding: clamp(34px, 5vw, 68px) 0;
}

.page-news .news-topics-figure {
  margin: 0 0 26px;
}

.page-news .news-topic-grid {
  display: grid;
  gap: 16px;
}

.page-news .news-topic {
  padding: 22px 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--red);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  display: flex;
  flex-direction: column;
}

.page-news .news-topic-no {
  margin: 0;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--slate);
  letter-spacing: 0.08em;
}

.page-news .news-topic-title {
  margin: 8px 0 0;
  font-size: var(--fs-28);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-news .news-topic-body {
  margin: 10px 0 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--slate);
}

.page-news .news-topic-path {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

.page-news .news-topic-path .news-change-label {
  color: var(--cyan-deep);
}

.page-news .news-topic-path .path {
  font-size: var(--fs-16);
}

/* ---------- 更新节奏 ---------- */
.page-news .news-cadence {
  padding: clamp(34px, 5vw, 68px) 0 clamp(48px, 7vw, 96px);
  background: var(--warm);
}

.page-news .news-cadence-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 6px solid var(--ink);
}

.page-news .news-cadence-item {
  padding: 18px 18px 20px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-news .news-cadence-bar {
  display: inline-block;
  padding: 3px 12px;
  font-size: var(--fs-18);
  font-weight: 700;
  color: #fff;
  background: var(--ink);
}

.page-news .news-cadence-title {
  margin: 12px 0 0;
  font-size: var(--fs-22);
  font-weight: 900;
}

.page-news .news-cadence-body {
  margin: 8px 0 0;
  font-size: var(--fs-16);
  line-height: 1.7;
  color: var(--slate);
}

.page-news .news-cadence-foot {
  margin-top: 28px;
  padding: 22px 20px;
  background: var(--ink);
  color: var(--warm);
  display: grid;
  gap: 18px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-news .news-cadence-cta {
  margin: 0;
  font-size: var(--fs-18);
  line-height: 1.7;
}

.page-news .news-cadence-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .news-cadence-links .btn {
  text-decoration: none;
}

.page-news .news-cadence-links .btn-ghost {
  border-color: var(--warm);
  color: var(--warm);
}

.page-news .news-cadence-links .btn-ghost:hover,
.page-news .news-cadence-links .btn-ghost:focus-visible {
  background: var(--warm);
  color: var(--ink);
}

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

.page-news .figure-caption {
  margin-top: 8px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--slate);
}

.page-news .news-catalog .figure-caption {
  color: rgba(250, 246, 239, 0.66);
}

/* ---------- 聚焦态 ---------- */
.page-news a:focus-visible,
.page-news summary:focus-visible,
.page-news button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .news-topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .news-cadence-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-left: 0;
    border-top: 6px solid var(--ink);
    gap: 0;
  }

  .page-news .news-cadence-item {
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .page-news .news-cadence-item:last-child {
    border-right: 0;
  }

  .page-news .news-cadence-foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-news .news-change {
    grid-template-columns: 5.5em minmax(0, 1fr);
    align-items: start;
    gap: 6px 16px;
  }

  .page-news .news-change-to {
    grid-column: 2;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-pin {
    padding: 32px 28px;
  }

  .page-news .news-catalog-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 40px;
    align-items: start;
  }

  .page-news .news-catalog-figure {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 1080px) {
  .page-news .news-log-grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-news .news-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-news .news-items {
    padding-right: 6px;
  }
}

@media (max-width: 520px) {
  .page-news .path {
    white-space: normal;
  }

  .page-news .news-pin-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-news .news-group-head {
    position: static;
  }

  .page-news .news-pin {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-chip,
  .page-news .news-rail-link {
    transition: none;
  }

  .page-news .news-item:hover,
  .page-news .news-item:focus-within {
    transform: none;
  }
}