.page-news {
  --news-num-col: 3.5rem;
  --news-pad-x: clamp(0.25rem, 1.6vw, 1.5rem);
  --news-ring: 0 0 0 1px var(--line);
}

/* ---------- 封面 ---------- */
.page-news .news-cover {
  position: relative;
  padding: clamp(1.5rem, 4vw, 3rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  background:
    radial-gradient(120% 95% at 6% 0%, rgba(14, 143, 143, 0.11), transparent 58%),
    radial-gradient(95% 85% at 98% 10%, rgba(232, 128, 31, 0.12), transparent 60%);
}

.page-news .news-cover__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

.page-news .news-cover__title {
  margin: 0.65rem 0 1rem;
  font-size: clamp(2.6rem, 7.5vw, 5rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-news .page-lede {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.85;
  color: var(--ink);
}

.page-news .news-cover__side {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.page-news .news-cover__side-label {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-news .news-cover__version {
  margin: 0.35rem 0 0.75rem;
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--amber-deep);
}

.page-news .news-cover__side-text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-news .news-cover__grid {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
  }
}

/* ---------- 索引与筛选 ---------- */
.page-news .news-index {
  padding-block: clamp(2.25rem, 5vw, 3.5rem) 0;
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-news .news-index .filter-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  margin: 1.5rem 0 0;
  padding: 0.65rem 0;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-entries {
  border-top: 1px solid var(--line);
}

.page-news .news-entry {
  position: relative;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 5rem);
}

.page-news .news-entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--amber);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 320ms var(--ease);
}

.page-news .news-entry:hover::before,
.page-news .news-entry[data-open]::before {
  transform: scaleY(1);
}

.page-news .news-entry__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.35rem 0.9rem;
  width: 100%;
  padding: clamp(1.15rem, 3vw, 1.85rem) var(--news-pad-x);
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: background-color 280ms var(--ease);
}

.page-news .news-entry__trigger:hover {
  background: rgba(255, 255, 255, 0.5);
}

.page-news .news-entry__num {
  grid-row: 1 / span 1;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--line);
  transition: color 280ms var(--ease);
}

.page-news .news-entry:hover .news-entry__num,
.page-news .news-entry[data-open] .news-entry__num {
  color: var(--amber);
}

.page-news .news-entry__body {
  display: block;
  min-width: 0;
}

.page-news .news-entry__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.55rem;
}

.page-news .news-entry__tag {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--silver);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .news-entry[data-category="v4"] .news-entry__tag {
  border-color: var(--teal);
  color: var(--teal);
}

.page-news .news-entry[data-category="perf"] .news-entry__tag {
  border-color: var(--amber);
  color: var(--amber-deep);
}

.page-news .news-entry[data-category="docs"] .news-entry__tag {
  border-color: var(--ink);
  color: var(--ink);
}

.page-news .news-entry[data-category="mobile"] .news-entry__tag {
  border-color: var(--muted);
  color: var(--muted);
  background: transparent;
}

.page-news .news-entry__stage {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-news .news-entry__title {
  display: block;
  font-size: clamp(1.125rem, 2.4vw, 1.375rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-news .news-entry__excerpt {
  display: block;
  margin-top: 0.5rem;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-entry__more {
  position: relative;
  align-self: center;
  width: 1.5rem;
  height: 1.5rem;
  flex: none;
}

.page-news .news-entry__more::before,
.page-news .news-entry__more::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform 280ms var(--ease), background-color 280ms var(--ease);
}

.page-news .news-entry__more::before {
  width: 14px;
  height: 2px;
}

.page-news .news-entry__more::after {
  width: 2px;
  height: 14px;
}

.page-news .news-entry[data-open] .news-entry__more::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-news .news-entry[data-open] .news-entry__more::before {
  background: var(--amber);
}

.page-news .news-entry__panel {
  padding: 0 var(--news-pad-x) clamp(1.35rem, 3vw, 2rem);
  margin-left: 0;
}

.page-news .news-entry__panel p {
  margin: 0;
  padding-top: 1rem;
  max-width: 68ch;
  border-top: 1px dashed var(--line);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.has-js .page-news .news-entry__panel {
  display: none;
}

.has-js .page-news .news-entry[data-open] .news-entry__panel {
  display: block;
}

@media (min-width: 720px) {
  .page-news .news-entry__trigger {
    grid-template-columns: var(--news-num-col) minmax(0, 1fr) auto;
    gap: 0 1.25rem;
  }

  .page-news .news-entry__panel {
    padding-left: calc(var(--news-num-col) + 1.25rem + var(--news-pad-x));
  }
}

/* ---------- V4 公告要点 ---------- */
.page-news .news-v4 {
  padding-block: clamp(3rem, 7vw, 5rem);
}

.page-news .news-v4__figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--silver);
}

.page-news .news-v4__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: v4count;
  border-top: 1px solid var(--line);
}

.page-news .news-v4__list li {
  counter-increment: v4count;
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  gap: 0.35rem 1rem;
  padding: clamp(1.15rem, 2.6vw, 1.6rem) 0;
  border-bottom: 1px solid var(--line);
}

.page-news .news-v4__list li::before {
  content: "0" counter(v4count);
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--amber-deep);
}

.page-news .news-v4__list h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-news .news-v4__list p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 性能专题 ---------- */
.page-news .news-perf {
  padding-block: clamp(3rem, 7vw, 5rem);
}

.page-news .news-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 1px;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-news .news-stats__item {
  padding: clamp(1.15rem, 3vw, 1.85rem);
  background: var(--silver);
}

.page-news .news-stats__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 4.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-news .news-stats__unit {
  margin-left: 0.15em;
  font-size: 0.5em;
  font-weight: 700;
  color: var(--amber-deep);
}

.page-news .news-stats__label {
  margin: 0.6rem 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .news-perf__figure {
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: #ffffff;
}

.page-news .news-perf__cols {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.page-news .news-perf__cols h3 {
  margin: 0 0 0.5rem;
  padding-top: 0.9rem;
  border-top: 2px solid var(--teal);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink);
}

.page-news .news-perf__cols p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--ink);
}

@media (min-width: 820px) {
  .page-news .news-perf__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 移动端专题 ---------- */
.page-news .news-mobile {
  padding-block: clamp(3rem, 7vw, 5rem);
}

.page-news .news-mobile__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-news .news-mobile__main p {
  margin: 0 0 1.1rem;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-news .news-mobile__main p:last-child {
  margin-bottom: 0;
}

.page-news .news-mobile__side {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--silver);
}

.page-news .news-mobile__side-title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber-deep);
}

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

.page-news .news-mobile__list li {
  position: relative;
  padding: 0.65rem 0 0.65rem 1.1rem;
  border-bottom: 1px dashed var(--line);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--ink);
}

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

.page-news .news-mobile__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.3rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

@media (min-width: 860px) {
  .page-news .news-mobile__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

/* ---------- 帮助文档 ---------- */
.page-news .news-docs {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2.5rem, 6vw, 4rem) clamp(3rem, 7vw, 5rem);
  align-items: center;
}

.page-news .news-docs .figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--silver);
}

.page-news .news-docs__text .section-title {
  margin: 0.5rem 0 1rem;
}

.page-news .news-docs__text p {
  margin: 0 0 1rem;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-news .news-docs__text p:last-child {
  margin-bottom: 0;
}

@media (min-width: 860px) {
  .page-news .news-docs {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

/* ---------- 阶段归档 ---------- */
.page-news .news-track-band {
  padding-block: clamp(3rem, 7vw, 5rem);
}

.page-news .news-track__cover {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 clamp(2rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: #ffffff;
}

.page-news .news-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(230px, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  border-top: 2px solid var(--line);
  -webkit-overflow-scrolling: touch;
}

.page-news .news-track__item {
  position: relative;
  scroll-snap-align: start;
  padding: 2.25rem 1.5rem 2rem 0;
  border-right: 1px dashed var(--line);
}

.page-news .news-track__item:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-news .news-track__marker {
  position: absolute;
  left: 0;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: var(--silver);
}

.page-news .news-track__item--done .news-track__marker {
  background: var(--ink);
  border: 2px solid var(--ink);
}

.page-news .news-track__item--now .news-track__marker {
  background: var(--silver);
  border: 3px solid var(--amber);
}

.page-news .news-track__stage {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-news .news-track__item--now .news-track__stage {
  color: var(--amber-deep);
}

.page-news .news-track__note {
  margin: 0 0 0.9rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 后续计划 ---------- */
.page-news .news-plan {
  padding-block: clamp(3rem, 7vw, 5rem) clamp(3.5rem, 8vw, 6rem);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-news .news-plan__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 clamp(2rem, 5vw, 3rem);
}

.page-news .news-plan__item {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--silver);
  transition: border-color 280ms var(--ease), transform 280ms var(--ease);
}

.page-news .news-plan__item:hover {
  border-color: var(--amber);
  transform: translateY(-2px);
}

.page-news .news-plan__num {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--amber-deep);
}

.page-news .news-plan__item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-news .news-plan__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-plan__visit {
  padding: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  border-top: 1px solid var(--line);
}

.page-news .news-plan__visit-text {
  margin: 0 0 1.1rem;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-news .news-plan__links {
  display: grid;
  gap: 0.65rem 2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

/* ---------- 图片自适应 ---------- */
.page-news .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .figure__caption {
  padding: 0.85rem clamp(1rem, 2.5vw, 1.5rem) 1rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
  background: var(--silver);
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-entry::before,
  .page-news .news-entry__num,
  .page-news .news-entry__trigger,
  .page-news .news-entry__more::before,
  .page-news .news-entry__more::after,
  .page-news .news-plan__item {
    transition: none !important;
  }

  .page-news .news-plan__item:hover {
    transform: none;
  }
}