.page-news {
  --pn-gap: clamp(20px, 4vw, 40px);
  --pn-radius: 2px;
  color: var(--ink);
  background: var(--paper);
}

.page-news .kicker {
  margin: 0 0 10px;
}

.page-news .container {
  width: 100%;
}

/* ---------- 首屏 ---------- */
.page-news .pn-hero {
  padding-block: clamp(26px, 4vw, 46px) clamp(34px, 6vw, 68px);
  background: linear-gradient(158deg, var(--copper-soft) 0%, rgba(216, 232, 225, 0.35) 34%, var(--paper) 72%);
  border-bottom: 1px solid var(--line);
}

.page-news .pn-hero__grid {
  display: grid;
  gap: var(--pn-gap);
  align-items: center;
}

.page-news .pn-hero h1 {
  margin: 0;
  font-size: clamp(29px, 5.4vw, 52px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--copper-deep);
}

.page-news .pn-lede {
  margin: 16px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  max-width: 46ch;
  color: var(--ink);
}

.page-news .pn-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-news .pn-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-strong);
}

.page-news .pn-hero__facts dt {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.page-news .pn-hero__facts dd {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 22px);
  letter-spacing: 0.04em;
  font-weight: 700;
  color: var(--copper);
}

.page-news .pn-hero__figure {
  margin: 0;
}

.page-news .pn-hero__figure img,
.page-news .pn-tags__figure img,
.page-news .pn-week__lead img,
.page-news .pn-helpband img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 标签分类 ---------- */
.page-news .pn-tags {
  background: var(--paper-card);
  border-bottom: 1px solid var(--line);
}

.page-news .pn-tags__grid {
  display: grid;
  gap: var(--pn-gap);
}

.page-news .pn-tags h2,
.page-news .pn-axis h2,
.page-news .pn-history h2,
.page-news .pn-source h2 {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--copper-deep);
}

.page-news .pn-tags__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
  max-width: 52ch;
}

.page-news .pn-tags__figure {
  margin: 22px 0 0;
}

.page-news .pn-tags__panel {
  align-self: start;
}

.page-news .pn-taglist {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 16px;
  list-style: none;
  background: var(--copper-soft);
  border: 1px solid var(--line);
  border-radius: var(--pn-radius);
}

.page-news .pn-taglist a.tag {
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.page-news .pn-taglist a.tag:hover,
.page-news .pn-taglist a.tag:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px -8px rgba(20, 82, 70, 0.6);
}

.page-news .pn-taglist__count {
  margin-left: 6px;
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.06em;
  opacity: 0.75;
}

.page-news .pn-tags__hint {
  margin-top: 18px;
  padding: 16px 18px;
  background: var(--paper);
  border-left: 3px solid var(--gold);
}

.page-news .pn-tags__hint p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- 周次主轴 ---------- */
.page-news .pn-axis {
  padding-block: clamp(30px, 5vw, 60px);
}

.page-news .pn-axis__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: start;
}

.page-news .pn-rail {
  border: 1px solid var(--line);
  border-top: 3px solid var(--copper);
  background: var(--paper-card);
  padding: 18px 18px 20px;
  border-radius: var(--pn-radius);
  box-shadow: var(--shadow-card);
}

.page-news .pn-rail__title {
  font-size: 13px !important;
  letter-spacing: 0.12em;
  color: var(--fog) !important;
  font-weight: 600 !important;
  margin: 0 0 16px !important;
}

.page-news .pn-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2px;
  border-left: 2px solid var(--line-strong);
}

.page-news .pn-rail__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 16px;
}

.page-news .pn-rail__list li:last-child {
  margin-bottom: 0;
}

.page-news .pn-rail__list li::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper-card);
  border: 2px solid var(--copper);
}

.page-news .pn-rail__list li.is-current::before {
  background: var(--gold);
  border-color: var(--gold);
}

.page-news .pn-rail__list a {
  font-size: 14px;
  font-weight: 600;
  color: var(--copper-deep);
  text-decoration: none;
}

.page-news .pn-rail__list a:hover,
.page-news .pn-rail__list a:focus-visible {
  color: var(--copper);
  text-decoration: underline;
}

.page-news .pn-rail__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fog);
}

.page-news .pn-rail__jump {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--indigo);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

/* ---------- 帮助文档条带 ---------- */
.page-news .pn-helpband {
  display: grid;
  gap: 14px;
  margin: 0 0 20px;
  padding: 14px;
  background: var(--copper-deep);
  color: var(--paper);
  border-radius: var(--pn-radius);
  box-shadow: var(--shadow-lift);
}

.page-news .pn-helpband img {
  border: 1px solid rgba(247, 243, 232, 0.28);
}

.page-news .pn-helpband__text {
  display: grid;
  gap: 6px;
  font-size: 13.5px;
  line-height: 1.7;
}

.page-news .pn-helpband__index {
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: 0.1em;
  color: var(--gold-bright);
  line-height: 1;
}

.page-news .pn-helpband__text strong {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-news .pn-helpband__text a {
  justify-self: start;
  margin-top: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  padding-bottom: 1px;
}

/* ---------- 周次折叠块 ---------- */
.page-news .pn-week {
  margin-bottom: 16px;
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--copper);
  border-radius: var(--pn-radius);
  box-shadow: var(--shadow-card);
  scroll-margin-top: 90px;
}

.page-news .pn-week[open] {
  border-top-color: var(--gold);
  box-shadow: var(--shadow-lift);
}

.page-news .pn-week__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .pn-week__head::after {
  content: "展开";
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog);
}

.page-news .pn-week[open] .pn-week__head::after {
  content: "收起";
  color: var(--copper);
}

.page-news .pn-week__no {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--copper-deep);
}

.page-news .pn-week__count {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--fog);
}

.page-news .pn-week__body {
  padding: 4px 18px 18px;
}

.page-news .pn-week__lead {
  margin: 0 0 6px;
}

/* ---------- 条目 ---------- */
.page-news .pn-entries {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .pn-entry {
  display: grid;
  gap: 8px;
  padding: 18px 4px 16px;
  border-top: 1px dashed var(--line);
  scroll-margin-top: 100px;
}

.page-news .pn-entry:target {
  background: var(--copper-soft);
  box-shadow: inset 3px 0 0 var(--gold);
  padding-left: 12px;
}

.page-news .pn-entry__tags {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  gap: 6px;
}

.page-news .pn-entry__title {
  margin: 0;
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 700;
  line-height: 1.36;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .pn-entry__desc {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--ink);
}

.page-news .pn-entry__link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--indigo);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  padding-bottom: 1px;
}

.page-news .pn-entry__link:hover,
.page-news .pn-entry__link:focus-visible {
  color: var(--copper);
  border-bottom-color: var(--copper);
}

/* ---------- 历史版本 ---------- */
.page-news .pn-history {
  padding-block: clamp(34px, 5.5vw, 62px);
  background: var(--copper-deep);
  color: var(--paper);
}

.page-news .pn-history__head {
  display: grid;
  gap: 14px;
  margin-bottom: 26px;
}

.page-news .pn-history h2 {
  color: var(--paper);
}

.page-news .pn-history .kicker {
  color: var(--gold-bright);
}

.page-news .pn-history__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  max-width: 54ch;
  color: rgba(247, 243, 232, 0.82);
}

.page-news .pn-cards {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-news .pn-card {
  flex: 0 0 min(78vw, 290px);
  scroll-snap-align: start;
  padding: 18px 18px 20px;
  background: rgba(247, 243, 232, 0.06);
  border: 1px solid rgba(247, 243, 232, 0.22);
  border-radius: var(--pn-radius);
}

.page-news .pn-card:first-child {
  flex-basis: min(86vw, 330px);
  background: rgba(199, 154, 46, 0.14);
  border-color: var(--gold);
}

.page-news .pn-card__ver {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 30px;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--gold-bright);
  line-height: 1;
}

.page-news .pn-card__row {
  margin: 0 0 8px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 243, 232, 0.88);
}

.page-news .pn-card__row span {
  display: block;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(247, 243, 232, 0.55);
  margin-bottom: 2px;
}

.page-news .pn-card__link {
  display: inline-block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  padding-bottom: 1px;
}

/* ---------- 记录来源 ---------- */
.page-news .pn-source {
  padding-block: clamp(32px, 5vw, 62px);
}

.page-news .pn-source__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-news .pn-source__copy p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 54ch;
}

.page-news .pn-source__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-news .pn-source__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .pn-source__list li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-news .pn-source__list li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .pn-source__num {
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0.04em;
  font-weight: 700;
  color: var(--copper);
}

.page-news .pn-source__list strong {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .pn-source__list p {
  margin: 5px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .pn-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .pn-helpband {
    grid-template-columns: 168px minmax(0, 1fr);
    align-items: center;
    gap: 18px;
  }

  .page-news .pn-card {
    flex-basis: 280px;
  }
}

@media (min-width: 900px) {
  .page-news .pn-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: clamp(28px, 4vw, 54px);
  }

  .page-news .pn-tags__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-news .pn-tags__panel {
    position: sticky;
    top: 24px;
  }

  .page-news .pn-axis__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(24px, 3.6vw, 46px);
  }

  .page-news .pn-rail {
    position: sticky;
    top: 24px;
  }

  .page-news .pn-helpband {
    grid-template-columns: 200px minmax(0, 1fr);
  }

  .page-news .pn-entry {
    grid-template-columns: 132px minmax(0, 1fr);
    column-gap: 20px;
    align-items: start;
  }

  .page-news .pn-history__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 28px;
  }

  .page-news .pn-cards {
    gap: 18px;
  }

  .page-news .pn-source__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.94fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 1120px) {
  .page-news .pn-axis__grid {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .page-news .pn-card {
    flex-basis: 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .pn-taglist a.tag,
  .page-news .pn-entry,
  .page-news .pn-card {
    transition: none;
  }

  .page-news .pn-taglist a.tag:hover,
  .page-news .pn-taglist a.tag:focus-visible {
    transform: none;
  }

  .page-news .pn-cards {
    scroll-behavior: auto;
  }
}