.page-news {
  --news-dim: #9AA4B8;
  --news-title-dim: #B9C1CF;
  --news-rule: 1px solid var(--line);
  --news-gap: clamp(16px, 3vw, 32px);
  --news-rail: clamp(72px, 9vw, 132px);
}

/* ============ 首屏 ============ */
.page-news .news-open {
  padding: clamp(24px, 5vw, 56px) 0 clamp(18px, 3vw, 32px);
}
.page-news .news-open .crumbs {
  margin-bottom: clamp(20px, 4vw, 40px);
}
.page-news .news-open__grid {
  display: grid;
  gap: 16px;
}
.page-news .news-open__title {
  margin: 0;
  font-family: var(--f-sans);
  font-weight: 900;
  font-size: var(--h-display);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 16ch;
}
.page-news .news-open__lede {
  max-width: 60ch;
  color: var(--news-dim);
  margin: 0;
}
.page-news .news-open__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: 8px 0 0;
  padding-top: 20px;
  border-top: var(--news-rule);
}
.page-news .news-open__cell {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}
.page-news .news-open__meta dt {
  font-size: var(--t-12);
  letter-spacing: 0.16em;
  color: var(--news-dim);
}
.page-news .news-open__meta dd {
  margin: 0;
  font-size: var(--t-18);
  color: var(--ink);
}

/* ============ 迭代节奏横幅 ============ */
.page-news .news-banner {
  margin: 0;
}
.page-news .news-banner__frame {
  position: relative;
  overflow: hidden;
  border-top: var(--news-rule);
  border-bottom: var(--news-rule);
  background: var(--space-blue);
}
.page-news .news-banner__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
  opacity: 0.9;
}
.page-news .news-banner__glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 90% at 18% 30%, rgba(226, 112, 58, 0.28), transparent 70%),
    radial-gradient(55% 80% at 82% 70%, rgba(51, 220, 198, 0.24), transparent 72%),
    linear-gradient(180deg, rgba(10, 16, 32, 0) 40%, rgba(10, 16, 32, 0.78) 100%);
}
.page-news .news-banner__cap {
  display: block;
  padding: 12px var(--gutter) 0;
  font-size: var(--t-12);
  letter-spacing: 0.08em;
  color: var(--news-dim);
}

/* ============ 通用区块 ============ */
.page-news .section {
  padding: clamp(40px, 6vw, 76px) 0;
}
.page-news .section-title {
  color: var(--news-title-dim);
  transition: color 0.25s var(--ease);
}
.page-news [data-spy].is-current .section-title,
.page-news .section-title:hover {
  color: var(--ink);
}
.page-news .lede {
  color: var(--news-dim);
  max-width: 66ch;
}

/* ============ 本期速览 ============ */
.page-news .news-brief__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 30px);
}
.page-news .news-brief__head .section-title {
  margin: 0;
}
.page-news .news-brief__stamp {
  font-size: var(--t-12);
  letter-spacing: 0.12em;
  color: var(--electric-cyan);
}
.page-news .news-brief__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-news .news-brief__cell {
  position: relative;
  padding: 20px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.page-news .news-brief__cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--jbo-terracotta), var(--electric-cyan));
}
.page-news .news-brief__k {
  display: block;
  font-size: var(--t-12);
  letter-spacing: 0.18em;
  color: var(--news-dim);
}
.page-news .news-brief__v {
  margin: 10px 0 8px;
  font-size: var(--t-24);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
}
.page-news .news-brief__d {
  margin: 0;
  font-size: var(--t-14);
  line-height: 1.7;
  color: var(--news-dim);
}

/* ============ 条目流 ============ */
.page-news .news-stream__head {
  margin-bottom: clamp(24px, 4vw, 44px);
}
.page-news .news-cycles {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}
.page-news .news-cycle {
  display: grid;
  gap: 12px;
}
.page-news .news-cycle__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.page-news .news-cycle__stamp {
  margin: 0;
  font-size: var(--t-14);
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--electric-cyan);
}
.page-news .news-cycle__rel {
  font-size: var(--t-12);
  color: var(--news-dim);
}
.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: var(--news-rule);
  display: grid;
}
.page-news .news-item {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 18px 0;
}
.page-news .news-item::before {
  content: "";
  position: absolute;
  left: -22.5px;
  top: 26px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--slate-mineral);
  box-shadow: 0 0 0 1px var(--line);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-news .news-item:hover::before,
.page-news .news-item:focus-within::before {
  background: var(--electric-cyan);
  box-shadow: 0 0 0 1px var(--electric-cyan), 0 0 14px rgba(51, 220, 198, 0.6);
}
.page-news .news-item__body {
  min-width: 0;
}
.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.page-news .news-tag {
  display: inline-flex;
  align-items: center;
}
.page-news .news-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 7px;
  border-radius: 50%;
  flex: none;
}
.page-news .news-dot--ver { background: var(--electric-cyan); }
.page-news .news-dot--env { background: var(--moss-green); }
.page-news .news-dot--guide { background: var(--jbo-terracotta); }
.page-news .news-dot--mobile { background: var(--signal-magenta); }
.page-news .news-dot--column { background: var(--amber-tick); }
.page-news .news-item__ref {
  font-size: var(--t-12);
  color: var(--news-dim);
  letter-spacing: 0.08em;
}
.page-news .news-item__title {
  margin: 0 0 8px;
  font-size: var(--t-18);
  font-weight: 700;
  line-height: 1.5;
  color: var(--news-title-dim);
  transition: color 0.18s var(--ease);
}
.page-news .news-item:hover .news-item__title,
.page-news .news-item:focus-within .news-item__title {
  color: var(--ink);
}
.page-news .news-item__sum {
  margin: 0;
  font-size: var(--t-14);
  line-height: 1.78;
  color: var(--news-dim);
  max-width: 68ch;
}
.page-news .news-copy {
  justify-self: start;
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 7px 14px;
  font-size: var(--t-12);
  letter-spacing: 0.08em;
  color: var(--news-dim);
  cursor: pointer;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
}
.page-news .news-copy:hover,
.page-news .news-copy:focus-visible {
  border-color: var(--electric-cyan);
  color: var(--electric-cyan);
  outline: none;
}
.page-news .news-copy.is-copied {
  border-color: var(--moss-green);
  color: var(--moss-green);
}

/* 同步说明 */
.page-news .news-note {
  margin-top: clamp(32px, 5vw, 60px);
  display: grid;
  gap: 20px;
}
.page-news .news-note__title {
  margin: 0 0 10px;
  font-size: var(--t-24);
  font-weight: 700;
  color: var(--ink);
}
.page-news .news-note__text p {
  margin: 0 0 16px;
  font-size: var(--t-14);
  line-height: 1.78;
  color: var(--news-dim);
  max-width: 60ch;
}

/* ============ 图片容器 ============ */
.page-news .news-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-panel);
  box-shadow: var(--shadow-soft);
}
.page-news .news-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news .news-figure figcaption {
  padding: 12px 16px;
  font-size: var(--t-12);
  line-height: 1.7;
  color: var(--news-dim);
  border-top: var(--news-rule);
}

/* ============ 指南变更 ============ */
.page-news .news-guide__grid {
  display: grid;
  gap: 26px;
}
.page-news .news-changes {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.page-news .news-change {
  display: grid;
  gap: 6px;
  padding-left: 16px;
  border-left: 2px solid var(--electric-cyan);
}
.page-news .news-change--amber { border-left-color: var(--amber-tick); }
.page-news .news-change--moss { border-left-color: var(--moss-green); }
.page-news .news-change--orange { border-left-color: var(--jbo-terracotta); }
.page-news .news-change__stamp {
  font-size: var(--t-12);
  letter-spacing: 0.12em;
  color: var(--news-dim);
}
.page-news .news-change__title {
  margin: 0;
  font-size: var(--t-18);
  font-weight: 700;
  color: var(--ink);
}
.page-news .news-change__desc {
  margin: 0;
  font-size: var(--t-14);
  line-height: 1.75;
  color: var(--news-dim);
}

/* ============ 适配清单 ============ */
.page-news .news-env__grid {
  display: grid;
  gap: 26px;
}
.page-news .news-env__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-news .news-env__list li {
  padding: 14px 16px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.page-news .news-env__k {
  display: block;
  font-size: var(--t-12);
  letter-spacing: 0.16em;
  color: var(--electric-cyan);
  margin-bottom: 6px;
}
.page-news .news-env__list p {
  margin: 0;
  font-size: var(--t-14);
  line-height: 1.75;
  color: var(--news-dim);
}

/* ============ 版本分层 ============ */
.page-news .news-layers__body {
  margin-top: clamp(20px, 3vw, 32px);
}
.page-news .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-news .tab {
  appearance: none;
  font-family: var(--f-sans);
  font-size: var(--t-14);
  font-weight: 500;
  padding: 10px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--news-dim);
  cursor: pointer;
  transition: color 0.16s var(--ease), background 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-news .tab:hover {
  color: var(--ink);
  border-color: var(--electric-cyan);
}
.page-news .tab[aria-selected="true"] {
  background: var(--electric-cyan);
  border-color: var(--electric-cyan);
  color: var(--void-navy);
}
.page-news .news-panel {
  margin-top: 22px;
  padding: 22px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.page-news .news-panel[hidden] {
  display: none;
}
.page-news .news-panel h3 {
  margin: 0 0 10px;
  font-size: var(--t-24);
  font-weight: 700;
  color: var(--ink);
}
.page-news .news-panel p {
  margin: 0;
  font-size: var(--t-14);
  line-height: 1.78;
  color: var(--news-dim);
  max-width: 66ch;
}
.page-news .news-panel ul {
  margin: 14px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: var(--t-14);
  line-height: 1.75;
  color: var(--news-dim);
}
.page-news .news-layers__tail {
  margin: 18px 0 0;
  font-size: var(--t-14);
  line-height: 1.75;
  color: var(--news-dim);
  padding-left: 14px;
  border-left: 2px solid var(--hairline-blue);
}

/* ============ 回看与反馈 ============ */
.page-news .news-back__grid {
  display: grid;
  gap: 26px;
}
.page-news .news-back__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.page-news .news-back__title {
  margin: 0 0 6px;
  font-size: var(--t-18);
  font-weight: 700;
  color: var(--ink);
}
.page-news .news-back__list p {
  margin: 0;
  font-size: var(--t-14);
  line-height: 1.75;
  color: var(--news-dim);
  max-width: 62ch;
}
.page-news .news-back__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-news .news-back__panel {
  padding: 24px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}
.page-news .news-back__panel-k {
  margin: 0 0 16px;
  font-size: var(--t-12);
  letter-spacing: 0.2em;
  color: var(--ash-gray);
}
.page-news .news-back__contact {
  margin: 0;
  display: grid;
  gap: 14px;
}
.page-news .news-back__contact dt {
  font-size: var(--t-12);
  letter-spacing: 0.14em;
  color: var(--news-dim);
  margin-bottom: 4px;
}
.page-news .news-back__contact dd {
  margin: 0;
  font-size: var(--t-14);
  color: var(--ink);
  overflow-wrap: anywhere;
}
.page-news .news-back__panel-note {
  margin: 20px 0 14px;
  padding-top: 16px;
  border-top: var(--news-rule);
  font-size: var(--t-12);
  line-height: 1.75;
  color: var(--news-dim);
}
.page-news .news-back__panel-link {
  font-size: var(--t-14);
  color: var(--electric-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 220, 198, 0.4);
  transition: border-color 0.16s var(--ease);
}
.page-news .news-back__panel-link:hover {
  border-bottom-color: var(--electric-cyan);
}

/* ============ 窄屏到宽屏 ============ */
@media (min-width: 700px) {
  .page-news .news-open__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-news .news-brief__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-news .news-note {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }
  .page-news .news-item {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 20px;
  }
  .page-news .news-copy {
    grid-column: 2;
    grid-row: 1;
    margin-top: 4px;
  }
}

@media (min-width: 900px) {
  .page-news .news-cycle {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 0 30px;
  }
  .page-news .news-cycle__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-top: 18px;
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-news .news-guide__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(30px, 5vw, 64px);
  }
  .page-news .news-guide__text {
    order: 1;
  }
  .page-news .news-figure--guide {
    order: 2;
  }
  .page-news .news-env__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: clamp(30px, 5vw, 60px);
  }
  .page-news .news-env__text {
    order: 2;
  }
  .page-news .news-figure--env {
    order: 1;
  }
  .page-news .news-back__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (max-width: 480px) {
  .page-news .news-list {
    padding-left: 14px;
  }
  .page-news .news-item::before {
    left: -18.5px;
    top: 24px;
  }
  .page-news .news-open__title {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news * {
    transition: none !important;
    animation: none !important;
  }
}