/* ===== 版本动态页 /blog/ ===== */
.page-news {
  --news-rule: var(--hair);
  --news-rule-strong: rgba(11, 22, 34, 0.2);
  --news-accent: var(--signal-500);
  background: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-news .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--stone-500);
}

.page-news .crumbs__link {
  color: var(--ink-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.page-news .crumbs__link:hover,
.page-news .crumbs__link:focus-visible {
  color: var(--signal-700);
  border-bottom-color: var(--signal-500);
}

.page-news .crumbs__sep {
  color: var(--stone-500);
}

.page-news .crumbs__item--current {
  color: var(--ink-900);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(30px, 5vw, 60px) 0 clamp(44px, 7vw, 92px);
  isolation: isolate;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--hair-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hair-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 74%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 74%);
  pointer-events: none;
}

.page-news .news-hero__grid {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
}

.page-news .news-hero__title {
  margin: 16px 0 0;
  font-size: clamp(2.1rem, 5.4vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.04em;
}

.page-news .news-hero__lede {
  margin: 22px 0 0;
  max-width: 58ch;
  color: var(--ink-500);
}

.page-news .news-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 0;
}

/* ---------- 媒体占位 ---------- */
.page-news .media {
  margin: 0;
}

.page-news .media__frame {
  border: 1px solid var(--news-rule);
  background: var(--paper-200);
  overflow: hidden;
}

.page-news .media__inner {
  display: block;
}

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

.page-news .media__caption {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--stone-500);
}

/* ---------- 章节跳转 ---------- */
.page-news .news-jump {
  border-top: 1px solid var(--news-rule);
  border-bottom: 1px solid var(--news-rule);
  background: var(--paper-100);
}

.page-news .news-jump__inner {
  display: flex;
  gap: 4px;
  padding: 10px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-news .news-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-news .news-jump__link {
  flex: 0 0 auto;
  padding: 7px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-500);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.page-news .news-jump__link:hover,
.page-news .news-jump__link:focus-visible {
  color: var(--signal-700);
  border-color: rgba(232, 85, 31, 0.45);
  background: rgba(232, 85, 31, 0.06);
}

/* ---------- 章节骨架 ---------- */
.page-news .news-sec {
  padding: clamp(52px, 8vw, 104px) 0;
  scroll-margin-top: calc(var(--masthead-h) + 16px);
}

.page-news .sec-head {
  max-width: 68ch;
  margin-bottom: clamp(30px, 4vw, 52px);
}

.page-news .sec-head .label {
  display: inline-block;
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--signal-700);
}

.page-news .sec-head .h-section {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0.03em;
}

.page-news .sec-head .prose {
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-500);
}

.page-news .section--ink {
  background: var(--ink-900);
  color: var(--paper-100);
}

.page-news .section--ink .sec-head .label {
  color: var(--signal-500);
}

.page-news .section--ink .sec-head .prose {
  color: var(--on-dark);
}

.page-news .section--ink .media__frame {
  border-color: var(--hair-dark);
  background: var(--ink-700);
}

.page-news .section--ink .media__caption {
  color: var(--on-dark-soft);
}

.page-news .section--sand {
  background: var(--paper-200);
}

/* ---------- V4 主版本 ---------- */
.page-news .v4-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-news .v4-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .v4-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--hair-dark);
}

.page-news .v4-list__item:first-child {
  border-top: 1px solid var(--hair-dark);
}

.page-news .v4-list__num {
  padding-top: 5px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal-500);
  font-variant-numeric: tabular-nums;
}

.page-news .v4-list__title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper-100);
}

.page-news .v4-list__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--on-dark);
}

/* ---------- 更新条目 ---------- */
.page-news .log {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--news-rule-strong);
}

.page-news .log__item {
  display: grid;
  gap: 14px;
  padding: clamp(24px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--news-rule);
}

.page-news .log__side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.page-news .log__ver {
  font-size: clamp(1.4rem, 3.4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--ink-900);
  font-variant-numeric: tabular-nums;
  transition: color 0.24s var(--ease-out), transform 0.24s var(--ease-out);
}

.page-news .log__item:hover .log__ver {
  color: var(--signal-500);
  transform: translateX(3px);
}

.page-news .log__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 11px 3px 9px;
  border: 1px solid var(--news-rule);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-500);
  white-space: nowrap;
}

.page-news .log__tag::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.page-news .log__tag--entry {
  color: var(--signal-700);
  border-color: rgba(178, 58, 18, 0.34);
}

.page-news .log__tag--doc {
  color: var(--ink-500);
  border-color: var(--news-rule-strong);
}

.page-news .log__tag--perf {
  color: var(--moss-600);
  border-color: rgba(74, 107, 79, 0.34);
}

.page-news .log__tag--fix {
  color: var(--clay-500);
  border-color: rgba(176, 106, 74, 0.36);
}

.page-news .log__when {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stone-500);
}

.page-news .log__title {
  margin: 0 0 10px;
  font-size: clamp(1.02rem, 1.9vw, 1.22rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.page-news .log__title a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.page-news .log__title a:hover,
.page-news .log__title a:focus-visible {
  color: var(--signal-700);
  border-bottom-color: var(--signal-500);
}

.page-news .log__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-500);
}

.page-news .log__impact {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone-500);
}

.page-news .log__impact a,
.page-news .cadence-note a {
  color: var(--signal-700);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 85, 31, 0.45);
}

.page-news .log__impact a:hover,
.page-news .cadence-note a:hover {
  border-bottom-color: var(--signal-700);
}

.page-news .log__more {
  margin-top: 14px;
}

.page-news .log__more summary {
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--signal-700);
}

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

.page-news .log__more summary::before {
  content: "＋ ";
  font-size: 13px;
}

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

.page-news .log__more p {
  margin: 12px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--news-rule-strong);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

/* ---------- 改版答疑 ---------- */
.page-news .qa {
  border-top: 1px solid var(--news-rule-strong);
}

.page-news .qa__item {
  display: grid;
  gap: 12px;
  padding: clamp(22px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--news-rule);
}

.page-news .qa__q {
  margin: 0;
  font-size: clamp(1rem, 1.8vw, 1.12rem);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--ink-900);
}

.page-news .qa__q::before {
  content: "Q";
  display: inline-block;
  margin-right: 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal-500);
  vertical-align: 2px;
}

.page-news .qa__a {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* ---------- 运行表现 ---------- */
.page-news .perf-stats {
  list-style: none;
  margin: 0 0 clamp(32px, 4vw, 52px);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--news-rule);
  border: 1px solid var(--news-rule);
}

.page-news .perf-stat {
  background: var(--paper-100);
  padding: clamp(20px, 2.6vw, 28px);
}

.page-news .perf-stat__num {
  font-size: clamp(2rem, 4.6vw, 3rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  font-variant-numeric: tabular-nums;
}

.page-news .perf-stat__unit {
  margin-left: 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--signal-500);
}

.page-news .perf-stat__desc {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-500);
}

/* ---------- 发布节奏 ---------- */
.page-news .cadence-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 44px);
  background: var(--news-rule);
  border: 1px solid var(--news-rule);
}

.page-news .cadence-col {
  background: var(--paper-100);
  padding: clamp(22px, 3vw, 32px);
}

.page-news .cadence-col__k {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal-700);
}

.page-news .cadence-col h3 {
  margin: 0 0 14px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-news .cadence-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .cadence-col li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-500);
}

.page-news .cadence-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--ink-500);
}

.page-news .cadence-note {
  margin: clamp(24px, 3vw, 34px) 0 0;
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* ---------- 后续方向 ---------- */
.page-news .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .next-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--hair-dark);
}

.page-news .next-list__item:first-child {
  border-top: 1px solid var(--hair-dark);
}

.page-news .next-list__num {
  padding-top: 5px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal-500);
  font-variant-numeric: tabular-nums;
}

.page-news .next-list__title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper-100);
}

.page-news .next-list__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--on-dark);
}

.page-news .next-cta {
  margin-top: clamp(30px, 4vw, 46px);
  padding-top: 24px;
  border-top: 1px solid var(--hair-dark);
  max-width: 76ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--on-dark);
}

.page-news .next-cta a {
  color: var(--paper-100);
  text-decoration: none;
  border-bottom: 1px solid var(--signal-500);
  transition: color 0.2s var(--ease-out);
}

.page-news .next-cta a:hover,
.page-news .next-cta a:focus-visible {
  color: var(--signal-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .perf-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 800px) {
  .page-news .qa__item {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 34px;
    align-items: start;
  }

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

@media (min-width: 820px) {
  .page-news .log__item {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 12px 32px;
  }

  .page-news .log__side {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

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

  .page-news .v4-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-news .perf-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 819px) {
  .page-news .news-hero__title br {
    display: none;
  }

  .page-news .log__side {
    align-items: baseline;
  }

  .page-news .log__ver {
    margin-right: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .log__ver,
  .page-news .log__title a,
  .page-news .news-jump__link,
  .page-news .crumbs__link,
  .page-news .next-cta a {
    transition: none;
  }

  .page-news .log__item:hover .log__ver {
    transform: none;
  }
}