/* ============================================
   page-news · 趋势观察
   作用域限定：.page-news
   ============================================ */

.page-news {
  --news-gap: clamp(14px, 2vw, 20px);
  --news-pad: clamp(16px, 2.4vw, 24px);
  --news-cut: 16px;
  display: block;
  overflow-x: clip;
}

.page-news .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏：主题声明区 ---------- */
.page-news .news-hero {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4.5vw, 52px) 0 clamp(18px, 3vw, 30px);
}

.page-news .news-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-news .news-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 7.2vw, 60px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-news .news-hero h1::after {
  content: "";
  display: block;
  width: 88px;
  height: 4px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--amber) 0%, var(--cyan) 100%);
}

.page-news .news-hero .lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 关键读数带 ---------- */
.page-news .news-metrics {
  list-style: none;
  margin: 8px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - var(--news-cut)) 0, 100% var(--news-cut), 100% 100%, var(--news-cut) 100%, 0 calc(100% - var(--news-cut)));
}

.page-news .news-metrics li {
  display: grid;
  gap: 3px;
  padding: 14px 16px;
  background: var(--ink-900);
}

.page-news .news-metrics b {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-news .news-metrics span {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 封面图 ---------- */
.page-news .news-cover {
  margin-block: clamp(8px, 2vw, 18px) clamp(26px, 4.5vw, 52px);
}

.page-news .news-figure {
  margin: 0;
  aspect-ratio: 12 / 5;
}

/* ---------- 区块通用 ---------- */
.page-news .news-block {
  display: grid;
  gap: 0;
  padding-block: clamp(30px, 5vw, 58px);
  border-top: 1px solid var(--hair);
}

.page-news .block-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 30px);
  max-width: 76ch;
}

.page-news .block-head .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-news .block-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.08;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-news .block-head p:not(.eyebrow) {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-news .block-note {
  margin: clamp(16px, 2.5vw, 24px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .block-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
}

.page-news .block-note a:hover,
.page-news .block-note a:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber);
}

/* ---------- 01 入口变更日志 ---------- */
.page-news .log {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .log__item {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 16px 18px 16px 20px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--ink-700);
  clip-path: polygon(0 0, calc(100% - var(--news-cut)) 0, 100% var(--news-cut), 100% 100%, var(--news-cut) 100%, 0 calc(100% - var(--news-cut)));
  transition: transform .25s var(--ease), border-left-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-news .log__item:hover,
.page-news .log__item:focus-within {
  transform: translateY(-3px);
  border-left-color: var(--amber);
  box-shadow: 0 16px 34px rgba(4, 10, 26, .52);
}

.page-news .log__time {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--cyan-mist);
}

.page-news .log__body {
  display: grid;
  gap: 6px;
}

.page-news .log__body h3 {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.42;
  color: var(--paper);
}

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

.page-news .log__item .tag {
  justify-self: start;
}

/* ---------- 02 排查案例 ---------- */
.page-news .case-shell {
  display: block;
}

.page-news .case-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(14px, 2.4vw, 20px);
}

.page-news .case-chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .03em;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-news .case-chip input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}

.page-news .case-chip:hover {
  color: var(--paper);
  border-color: var(--cyan);
}

.page-news .case-chip:has(input:focus-visible) {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .case-chip:has(input:checked) {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-900);
  font-weight: 700;
}

.page-news .case-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
}

.page-news .case-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: var(--news-pad);
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--ink-700);
  clip-path: polygon(0 0, calc(100% - var(--news-cut)) 0, 100% var(--news-cut), 100% 100%, var(--news-cut) 100%, 0 calc(100% - var(--news-cut)));
  transition: transform .25s var(--ease), border-left-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-news .case-card:hover,
.page-news .case-card:focus-within {
  transform: translateY(-3px);
  border-left-color: var(--cyan);
  box-shadow: 0 16px 34px rgba(4, 10, 26, .52);
}

.page-news .case-card .tag {
  justify-self: start;
}

.page-news .case-card__title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.42;
  color: var(--paper);
}

.page-news .case-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-news .case-card__meta {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cyan-mist);
}

.page-news .case-card--feature {
  grid-column: 1 / -1;
}

.page-news .case-figure {
  margin: 0;
  aspect-ratio: 3 / 2;
}

.page-news .case-card__body {
  display: grid;
  gap: 10px;
  align-content: start;
}

/* 纯 CSS 标签筛选 */
.page-news .case-shell:has(#filter-app:checked) .case-card:not(.case-card--app),
.page-news .case-shell:has(#filter-login:checked) .case-card:not(.case-card--login),
.page-news .case-shell:has(#filter-off:checked) .case-card:not(.case-card--off) {
  display: none;
}

/* ---------- 03 版本发布 ---------- */
.page-news .rel-layout {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
}

.page-news .rel-figure {
  margin: 0;
  aspect-ratio: 8 / 5;
}

.page-news .rel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-news .rel-item {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 2px 0 2px 22px;
  border-left: 2px solid var(--line);
}

.page-news .rel-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  border-radius: 50%;
}

.page-news .rel-item:last-child {
  border-left-color: transparent;
}

.page-news .rel-ver {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-news .rel-item h3 {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.42;
  color: var(--paper);
}

.page-news .rel-item p:not(.rel-ver) {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 04 回访与收藏 ---------- */
.page-news .fav-layout {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-news .fav-figure {
  margin: 0;
  aspect-ratio: 7 / 4;
}

.page-news .fav-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
}

.page-news .fav-points li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--ink-700);
  clip-path: polygon(0 0, calc(100% - var(--news-cut)) 0, 100% var(--news-cut), 100% 100%, var(--news-cut) 100%, 0 calc(100% - var(--news-cut)));
  transition: transform .25s var(--ease), border-left-color .25s var(--ease);
}

.page-news .fav-points li:hover {
  transform: translateY(-3px);
  border-left-color: var(--amber);
}

.page-news .fav-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-news .fav-points h3 {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.42;
  color: var(--paper);
}

.page-news .fav-points p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 收尾行动区 ---------- */
.page-news .news-cta {
  display: grid;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 48px);
  padding: clamp(22px, 3.4vw, 38px);
  background:
    linear-gradient(135deg, rgba(255, 179, 0, .14) 0%, rgba(0, 229, 255, .09) 100%),
    var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-news .news-cta .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-news .news-cta h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-news .news-cta p:not(.eyebrow) {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--muted);
}

.page-news .news-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

/* ---------- 图片容器微调 ---------- */
.page-news .img-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

/* ---------- 键盘焦点可见 ---------- */
.page-news a:focus-visible,
.page-news .case-chip:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============================================
   媒体查询
   ============================================ */
@media (min-width: 640px) {
  .page-news .news-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-news .log__item {
    grid-template-columns: 112px minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 18px;
    padding: 18px 22px;
  }

  .page-news .log__time {
    align-self: center;
  }

  .page-news .log__item .tag {
    align-self: center;
    justify-self: end;
  }

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

  .page-news .case-card--feature {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    column-gap: 22px;
  }

  .page-news .case-card--feature .case-figure {
    grid-row: 1;
  }
}

@media (min-width: 960px) {
  .page-news .rel-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
    align-items: start;
    column-gap: clamp(24px, 4vw, 44px);
  }

  .page-news .fav-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: center;
    column-gap: clamp(24px, 4vw, 44px);
  }

  .page-news .news-hero {
    gap: 20px;
  }
}

@media (min-width: 1180px) {
  .page-news .case-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .case-card--feature {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .log__item,
  .page-news .case-card,
  .page-news .fav-points li {
    transition: none;
  }

  .page-news .log__item:hover,
  .page-news .case-card:hover,
  .page-news .fav-points li:hover {
    transform: none;
  }
}