.page-news {
  --news-release: #C8702F;
  --news-catalog: #A5506A;
  --news-help: #2E9A8F;
  --news-compat: #5C5CB8;
  --news-rail-w: 210px;
  color: var(--db-text);
  padding-bottom: 8px;
}

/* ---------- 首屏说明带 ---------- */
.page-news .news-head {
  padding-top: 20px;
}

.page-news .news-banner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 20px;
  padding: 26px 20px 28px;
  background: linear-gradient(160deg, var(--db-ink-800) 0%, var(--db-ink-900) 62%);
  border: 1px solid var(--db-hairline);
  border-left: 3px solid var(--db-copper-500);
  box-shadow: var(--db-shadow-1);
}

.page-news .news-banner__text h1 {
  margin: 10px 0 0;
  font-size: clamp(26px, 6vw, 42px);
  line-height: 1.28;
  letter-spacing: 0.03em;
  font-weight: 900;
  color: var(--db-text);
}

.page-news .news-banner__lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--db-text-soft);
  max-width: 60ch;
}

.page-news .news-banner__meta {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-news .news-banner__meta li {
  font-size: 13px;
  line-height: 1.6;
  color: var(--db-muted);
  padding-left: 12px;
  border-left: 2px solid var(--db-hairline);
}

.page-news .news-banner__meta .db-mono {
  display: block;
  color: var(--db-copper-300);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-news .news-banner__figure {
  margin: 0;
  align-self: center;
  border: 1px solid var(--db-hairline-soft);
  background: var(--db-ink-700);
  overflow: hidden;
}

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

/* ---------- 列表与左栏 ---------- */
.page-news .news-log {
  padding-top: 40px;
}

.page-news .news-log__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-news .news-rail {
  border: 1px solid var(--db-hairline-soft);
  background: var(--db-ink-800);
  padding: 16px 16px 14px;
}

.page-news .news-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--db-muted);
  font-family: var(--db-mono);
  text-transform: uppercase;
}

.page-news .news-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-news .news-rail__list li {
  flex: 0 0 auto;
}

.page-news .news-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  font-size: 13px;
  color: var(--db-text-soft);
  text-decoration: none;
  border: 1px solid var(--db-hairline);
  border-left-width: 3px;
  background: rgba(232, 238, 245, 0.03);
  white-space: nowrap;
  transition: color 160ms ease-out, border-color 160ms ease-out, background 160ms ease-out;
}

.page-news .news-rail__link .db-mono {
  font-size: 11px;
  color: var(--db-muted);
}

.page-news .news-rail__link--release { border-left-color: var(--news-release); }
.page-news .news-rail__link--catalog { border-left-color: var(--news-catalog); }
.page-news .news-rail__link--help { border-left-color: var(--news-help); }
.page-news .news-rail__link--compat { border-left-color: var(--news-compat); }

.page-news .news-rail__link:hover,
.page-news .news-rail__link:focus-visible {
  color: var(--db-cyan-400);
  border-color: var(--db-cyan-400);
  background: rgba(53, 211, 209, 0.08);
}

.page-news .news-rail__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--db-muted);
}

/* ---------- 分类分组 ---------- */
.page-news .news-list {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-news .news-group {
  --group-color: var(--news-release);
  min-width: 0;
}

.page-news .news-group--release { --group-color: var(--news-release); }
.page-news .news-group--catalog { --group-color: var(--news-catalog); }
.page-news .news-group--help { --group-color: var(--news-help); }
.page-news .news-group--compat { --group-color: var(--news-compat); }

.page-news .news-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--group-color);
}

.page-news .news-group__title {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.08em;
  font-weight: 800;
  color: var(--db-text);
}

.page-news .news-group__count {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--db-muted);
}

/* ---------- 单条记录 ---------- */
.page-news .news-item {
  --item-color: var(--news-release);
  border-left: 3px solid var(--item-color);
  border-bottom: 1px solid var(--db-hairline-soft);
  background: linear-gradient(90deg, rgba(232, 238, 245, 0.045) 0%, rgba(232, 238, 245, 0) 72%);
  transition: background 180ms ease-out;
}

.page-news .news-item--release { --item-color: var(--news-release); }
.page-news .news-item--catalog { --item-color: var(--news-catalog); }
.page-news .news-item--help { --item-color: var(--news-help); }
.page-news .news-item--compat { --item-color: var(--news-compat); }

.page-news .news-item:hover {
  background: linear-gradient(90deg, rgba(232, 238, 245, 0.085) 0%, rgba(232, 238, 245, 0) 76%);
}

.page-news .news-item__head {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "time mark"
    "title mark";
  gap: 6px 14px;
  padding: 18px 16px 18px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .news-item__time {
  grid-area: time;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--db-muted);
}

.page-news .news-item__title {
  grid-area: title;
  font-size: 16px;
  line-height: 1.55;
  font-weight: 700;
  color: var(--db-text);
}

.page-news .news-item__mark {
  grid-area: mark;
  align-self: center;
  position: relative;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.page-news .news-item__mark::before,
.page-news .news-item__mark::after {
  content: "";
  position: absolute;
  background: var(--item-color);
  transition: transform 180ms ease-out, opacity 180ms ease-out;
}

.page-news .news-item__mark::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-news .news-item__mark::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-news .news-item[open] .news-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-news .news-item[open] .news-item__title {
  color: var(--db-copper-300);
}

.page-news .news-item__body {
  padding: 0 16px 20px 16px;
}

.page-news .news-item__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--db-text-soft);
}

.page-news .news-item__body p + p {
  margin-top: 10px;
}

.page-news .news-item__body a {
  color: var(--db-copper-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 160, 99, 0.5);
}

.page-news .news-item__body a:hover,
.page-news .news-item__body a:focus-visible {
  color: var(--db-cyan-400);
  border-bottom-color: var(--db-cyan-400);
}

.page-news .news-item__next {
  font-size: 13px;
  color: var(--db-muted);
}

/* ---------- 专题 ---------- */
.page-news .news-topics {
  padding-top: 44px;
}

.page-news .topic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 30px;
}

.page-news .topic-card {
  --topic-color: var(--db-copper-500);
  display: flex;
  flex-direction: column;
  background: var(--db-ink-800);
  border: 1px solid var(--db-hairline);
  border-top: 3px solid var(--topic-color);
  box-shadow: 9px 9px 0 -1px var(--db-ink-700), 9px 9px 0 0 var(--db-hairline-soft);
}

.page-news .topic-card--1 { --topic-color: var(--db-copper-500); }
.page-news .topic-card--2 { --topic-color: var(--news-help); }
.page-news .topic-card--3 { --topic-color: var(--db-cyan-400); }

.page-news .topic-card__media {
  margin: 0;
  border-bottom: 1px solid var(--db-hairline-soft);
  background: var(--db-ink-700);
  overflow: hidden;
}

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

.page-news .topic-card__body {
  padding: 20px 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-news .topic-card__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--topic-color);
}

.page-news .topic-card__title {
  margin: 0;
  font-size: 18px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--db-text);
}

.page-news .topic-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--db-text-soft);
}

.page-news .topic-card__eps {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-news .topic-card__eps li {
  font-size: 13px;
  line-height: 1.6;
  color: var(--db-muted);
  padding: 6px 10px;
  background: rgba(232, 238, 245, 0.04);
  border-left: 2px solid var(--topic-color);
}

.page-news .topic-card__eps .db-mono {
  margin-right: 8px;
  font-size: 11px;
  color: var(--db-copper-300);
}

/* ---------- 归档 ---------- */
.page-news .news-archive {
  padding-top: 44px;
}

.page-news .news-archive__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-news .news-archive__main p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--db-text-soft);
}

.page-news .news-archive__main a {
  color: var(--db-copper-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 160, 99, 0.5);
}

.page-news .news-archive__main a:hover,
.page-news .news-archive__main a:focus-visible {
  color: var(--db-cyan-400);
  border-bottom-color: var(--db-cyan-400);
}

.page-news .news-archive__steps {
  margin: 0;
  padding: 18px 18px 8px;
  list-style: none;
  display: grid;
  gap: 16px;
  background: linear-gradient(180deg, var(--db-wine-600) 0%, var(--db-ink-700) 100%);
  border: 1px solid var(--db-hairline);
}

.page-news .news-archive__steps li {
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--db-hairline);
}

.page-news .news-archive__steps li:last-child {
  border-bottom: 0;
  padding-bottom: 6px;
}

.page-news .news-archive__num {
  display: inline-block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--db-copper-300);
}

.page-news .news-archive__steps strong {
  display: block;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--db-text);
}

.page-news .news-archive__steps p {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--db-text-soft);
}

.page-news .news-archive__steps a {
  color: var(--db-copper-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 160, 99, 0.5);
}

/* ---------- 尾部行动 ---------- */
.page-news .news-cta {
  margin-top: 48px;
  border-top: 1px solid var(--db-hairline);
  background: linear-gradient(120deg, rgba(14, 58, 56, 0.85) 0%, rgba(16, 31, 51, 0.9) 60%, var(--db-ink-900) 100%);
}

.page-news .news-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 32px 0 40px;
}

.page-news .news-cta__title {
  margin: 0;
  font-size: clamp(20px, 4vw, 26px);
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--db-text);
}

.page-news .news-cta__text p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--db-text-soft);
  max-width: 52ch;
}

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

/* ---------- 平板起 ---------- */
@media (min-width: 700px) {
  .page-news .news-banner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 28px;
    padding: 32px 28px 34px;
    align-items: center;
  }

  .page-news .news-banner__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-news .news-item__head {
    grid-template-columns: 1fr auto auto;
    grid-template-areas: "title time mark";
    align-items: center;
    padding: 20px 22px 20px 20px;
  }

  .page-news .news-item__time {
    font-size: 12px;
    white-space: nowrap;
  }

  .page-news .news-item__body {
    padding: 0 22px 22px 20px;
  }

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

  .page-news .news-archive__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 40px;
  }

  .page-news .news-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 40px 0 48px;
  }
}

/* ---------- 桌面：左栏固定 ---------- */
@media (min-width: 980px) {
  .page-news .news-log {
    padding-top: 52px;
  }

  .page-news .news-log__grid {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--db-header-h) + 20px);
    padding: 18px 16px 16px;
  }

  .page-news .news-rail__list {
    display: grid;
    gap: 6px;
    overflow: visible;
  }

  .page-news .news-rail__link {
    justify-content: space-between;
    padding: 9px 10px;
    white-space: normal;
  }

  .page-news .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    align-items: start;
  }

  .page-news .topic-card--2 {
    transform: translateY(26px);
  }

  .page-news .topic-card--3 {
    transform: translateY(52px);
  }

  .page-news .news-topics {
    padding-bottom: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-item__mark::before,
  .page-news .news-item__mark::after,
  .page-news .news-rail__link {
    transition: none;
  }

  .page-news .topic-card--2,
  .page-news .topic-card--3 {
    transform: none;
  }
}