.page-news {
  background: var(--c-blue-950);
  color: var(--c-text);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  padding: clamp(22px, 3vw, 36px) 0 clamp(30px, 4vw, 48px);
  border-bottom: 2px solid var(--c-line);
}

.page-news .news-hero__main .yk-kicker {
  margin-bottom: 12px;
}

.page-news .news-hero__main .yk-title {
  max-width: 16em;
}

.page-news .news-hero__main .yk-lead {
  max-width: 40em;
  margin-top: 16px;
}

.page-news .news-hero__panel {
  border: 2px solid var(--c-line);
  border-left: 4px solid var(--c-orange);
  background: var(--c-blue-900);
  padding: 18px 20px;
  box-shadow: var(--shadow-hard);
}

.page-news .news-hero__stats {
  margin: 0;
  display: grid;
  gap: 16px;
}

.page-news .news-hero__stat {
  border-left: 2px solid var(--c-cyan-600);
  padding-left: 12px;
}

.page-news .news-hero__stat dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}

.page-news .news-hero__stat dd {
  margin: 5px 0 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-white);
}

@media (min-width: 900px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: end;
    gap: 48px;
  }
}

/* ---------- 主布局 ---------- */
.page-news .news-layout {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  padding-top: clamp(30px, 4vw, 52px);
}

.page-news .news-layout > * {
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-news .news-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 左侧分类索引 ---------- */
.page-news .news-index {
  border-top: 3px solid var(--c-cyan);
  padding-top: 14px;
}

.page-news .news-index .yk-annotation {
  margin-bottom: 12px;
}

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

@media (min-width: 560px) and (max-width: 999px) {
  .page-news .news-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px;
  }
}

.page-news .news-index__link {
  display: block;
  padding: 9px 12px;
  border-left: 2px solid var(--c-line);
  color: var(--c-muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-news .news-index__link:hover {
  color: var(--c-white);
  border-left-color: var(--c-cyan-600);
}

.page-news .news-index__link[aria-current="true"] {
  color: var(--c-cyan);
  border-left-color: var(--c-cyan);
  background: rgba(45, 226, 230, 0.08);
  font-weight: 700;
}

.page-news .news-index__note {
  margin: 18px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--c-line);
  background: var(--c-blue-900);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-news .news-index__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 230, 0.45);
}

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

@media (min-width: 1000px) {
  .page-news .news-index {
    position: sticky;
    top: calc(var(--header-offset) + 24px);
  }
}

/* ---------- 章节 ---------- */
.page-news .news-section {
  scroll-margin-top: calc(var(--header-offset) + 20px);
}

.page-news .news-section + .news-section {
  margin-top: clamp(44px, 5vw, 76px);
}

.page-news .news-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  margin-bottom: clamp(20px, 2.4vw, 30px);
  border-bottom: 2px solid var(--c-line);
}

.page-news .news-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--c-white);
}

.page-news .news-section__count {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
  white-space: nowrap;
}

/* ---------- 置顶专题 ---------- */
.page-news .news-feature {
  border: 2px solid var(--c-line);
  background: linear-gradient(158deg, var(--c-blue-800) 0%, var(--c-blue-900) 64%);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-news .news-figure {
  margin: 0;
  background: var(--c-blue-900);
  border: 2px solid var(--c-line);
}

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

.page-news .news-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-news .news-figure--feature {
  border: 0;
  border-bottom: 2px solid var(--c-line);
}

.page-news .news-feature__body {
  padding: clamp(20px, 3vw, 34px);
}

.page-news .news-feature__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 16px;
}

.page-news .news-feature__phase {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-orange);
}

.page-news .news-feature__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-white);
}

.page-news .news-feature__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-news .news-feature__threads {
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  margin-top: 24px;
}

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

.page-news .news-thread {
  background: var(--c-blue-950);
  padding: 16px 16px 18px;
}

.page-news .news-thread__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-news .news-thread p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-text);
}

/* ---------- 笔记列表 ---------- */
.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--c-line);
}

.page-news .news-item {
  position: relative;
  display: grid;
  grid-template-areas:
    "tag time"
    "body body";
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-news .news-item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 2px;
  background: var(--c-cyan);
  transition: width 0.25s ease;
}

.page-news .news-item:hover::after {
  width: 100%;
}

.page-news .news-item__tag {
  grid-area: tag;
}

.page-news .news-item__body {
  grid-area: body;
  min-width: 0;
}

.page-news .news-item__time {
  grid-area: time;
  align-self: center;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-muted);
}

.page-news .news-item__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.6vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-white);
}

.page-news .news-item__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}

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

.page-news .news-item__more summary {
  display: inline-block;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
}

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

.page-news .news-item__more summary::before {
  content: "+ ";
}

.page-news .news-item__more[open] summary::before {
  content: "− ";
}

.page-news .news-item__more p {
  margin: 10px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--c-cyan-600);
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-text);
}

@media (min-width: 760px) {
  .page-news .news-item {
    grid-template-areas: "tag .page-news time";
    grid-template-columns: 128px minmax(0, 1fr) 124px;
    gap: 0 26px;
    align-items: start;
    padding: 24px 0;
  }

  .page-news .news-item__time {
    padding-top: 4px;
    align-self: start;
  }
}

/* ---------- 双栏图文 ---------- */
.page-news .news-split {
  display: grid;
  gap: clamp(22px, 3vw, 32px);
}

.page-news .news-split > * {
  min-width: 0;
}

@media (min-width: 900px) {
  .page-news .news-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .news-split--flip .news-split__figure {
    order: -1;
  }
}

.page-news .news-split__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-news .news-points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .news-points li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-cyan);
  background: var(--c-blue-900);
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-text);
}

.page-news .news-points__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-orange);
}

/* ---------- 版本日志 ---------- */
.page-news .news-figure--wide {
  margin-top: 24px;
  margin-bottom: clamp(26px, 3vw, 38px);
}

.page-news .news-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  position: relative;
}

.page-news .news-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-cyan) 0%, var(--c-cyan-600) 40%, var(--c-line) 100%);
}

.page-news .news-timeline__node {
  position: relative;
  padding-bottom: 26px;
}

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

.page-news .news-timeline__node::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 5px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--c-cyan);
  background: var(--c-blue-950);
}

.page-news .news-timeline__node.is-current::before {
  border-color: var(--c-orange);
  background: var(--c-orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.22);
}

.page-news .news-timeline__phase {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-news .news-timeline__node.is-current .news-timeline__phase {
  color: var(--c-orange);
}

.page-news .news-timeline__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--c-white);
}

.page-news .news-timeline__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------- 选题建议 ---------- */
.page-news .news-cta {
  display: grid;
  gap: 24px;
  padding: clamp(24px, 4vw, 44px);
  border: 2px solid var(--c-cyan);
  background:
    repeating-linear-gradient(135deg, rgba(45, 226, 230, 0.05) 0 10px, transparent 10px 20px),
    var(--c-blue-900);
}

.page-news .news-cta__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-white);
}

.page-news .news-cta__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-news .news-cta__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-news .news-cta__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 230, 0.45);
}

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

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

@media (min-width: 860px) {
  .page-news .news-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 36px;
  }

  .page-news .news-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
}
<<<END>>>