.page-news {
  --news-pad: clamp(18px, 4vw, 40px);
  --news-gap: clamp(14px, 2vw, 22px);
  position: relative;
  padding-bottom: clamp(56px, 9vw, 110px);
  background:
    radial-gradient(900px 520px at 84% -6%, rgba(34, 224, 214, 0.09), transparent 62%),
    radial-gradient(680px 420px at 4% 18%, rgba(255, 185, 60, 0.05), transparent 60%);
}

.page-news a {
  color: var(--c-accent-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 243, 236, 0.32);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-news a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.page-news__masthead-wrap {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-news__masthead {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(22px, 3.4vw, 40px);
  align-items: end;
}

.page-news__pulse {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 16px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

.page-news__pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(34, 224, 214, 0.16);
}

.page-news__title {
  margin: 0 0 clamp(16px, 2vw, 22px);
  max-width: 17ch;
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 60px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.page-news__lede {
  margin: 0 0 22px;
  max-width: 40em;
  font-size: clamp(15px, 1.35vw, 17px);
  line-height: 1.85;
  color: var(--c-muted);
}

.page-news__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news__badge {
  display: inline-block;
  padding: 5px 13px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-news__badge--accent {
  border-color: rgba(34, 224, 214, 0.45);
  background: rgba(34, 224, 214, 0.09);
  color: var(--c-accent-soft);
}

.page-news__badge--data {
  border-color: rgba(255, 185, 60, 0.42);
  background: rgba(255, 185, 60, 0.08);
  color: var(--c-data);
}

.page-news__badge--alert {
  border-color: rgba(255, 77, 157, 0.42);
  background: rgba(255, 77, 157, 0.08);
  color: var(--c-alert);
}

.page-news__masthead-fig {
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-surface);
}

.page-news__masthead-fig img,
.page-news__figure img,
.page-news__entry-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news__masthead-fig figcaption,
.page-news__figure figcaption {
  padding: 12px 18px 14px;
  border-top: 1px solid var(--c-line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-news__section {
  margin-top: clamp(56px, 8vw, 108px);
}

.page-news__head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-news .section-head__title {
  color: var(--c-text);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(22px, 3.1vw, 36px);
  line-height: 1.24;
  margin: 0 0 12px;
  max-width: 22ch;
}

.page-news .section-head__desc {
  color: var(--c-muted);
  font-size: clamp(14.5px, 1.3vw, 16px);
  line-height: 1.85;
  max-width: 46em;
  margin: 0;
}

.page-news .section-head__idx {
  display: block;
  font-size: 13px;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

/* ---- 栏目筛选与条目列表 ---- */
.page-news__board {
  position: relative;
}

.page-news__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-news__list-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  margin-bottom: 10px;
}

.page-news__list-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.page-news__list-sub {
  margin: 0;
  font-size: 13px;
  color: var(--c-muted);
}

.page-news__filters-note {
  margin: 0 0 20px;
  max-width: 52em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--c-line);
}

.page-news__pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color var(--t-fast), border-color var(--t-fast), background-color var(--t-fast), transform var(--t-fast);
}

.page-news__pill:hover {
  color: var(--c-text);
  border-color: var(--c-accent-soft);
  transform: translateY(-1px);
}

.page-news__pill-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-data);
}

#news-all:checked ~ .page-news__filters label[for="news-all"],
#news-ver:checked ~ .page-news__filters label[for="news-ver"],
#news-rule:checked ~ .page-news__filters label[for="news-rule"],
#news-zone:checked ~ .page-news__filters label[for="news-zone"],
#news-notice:checked ~ .page-news__filters label[for="news-notice"],
#news-data:checked ~ .page-news__filters label[for="news-data"] {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: var(--c-bg);
  font-weight: 700;
}

#news-all:checked ~ .page-news__filters label[for="news-all"] .page-news__pill-num,
#news-ver:checked ~ .page-news__filters label[for="news-ver"] .page-news__pill-num,
#news-rule:checked ~ .page-news__filters label[for="news-rule"] .page-news__pill-num,
#news-zone:checked ~ .page-news__filters label[for="news-zone"] .page-news__pill-num,
#news-notice:checked ~ .page-news__filters label[for="news-notice"] .page-news__pill-num,
#news-data:checked ~ .page-news__filters label[for="news-data"] .page-news__pill-num {
  color: var(--c-bg);
  opacity: 0.72;
}

#news-ver:checked ~ .page-news__list .page-news__item:not([data-cat="ver"]),
#news-rule:checked ~ .page-news__list .page-news__item:not([data-cat="rule"]),
#news-zone:checked ~ .page-news__list .page-news__item:not([data-cat="zone"]),
#news-notice:checked ~ .page-news__list .page-news__item:not([data-cat="notice"]),
#news-data:checked ~ .page-news__list .page-news__item:not([data-cat="data"]) {
  display: none;
}

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

.page-news__item {
  border-bottom: 1px solid var(--c-line);
}

.page-news__entry {
  display: block;
}

.page-news__entry-head {
  display: grid;
  grid-template-columns: clamp(34px, 3.2vw, 50px) minmax(0, 1fr) auto;
  gap: var(--news-gap);
  align-items: start;
  padding: clamp(20px, 2.6vw, 28px) 6px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--t-fast);
}

.page-news__entry-head::-webkit-details-marker {
  display: none;
}

.page-news__entry-head:hover {
  background: rgba(34, 224, 214, 0.04);
}

.page-news__item[data-cat="data"] .page-news__entry-head {
  background-image: repeating-linear-gradient(-24deg, transparent 0 13px, rgba(34, 224, 214, 0.06) 13px 14px);
}

.page-news__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-data);
  padding-top: 4px;
}

.page-news__entry-main {
  display: block;
  min-width: 0;
}

.page-news__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-news__cat {
  display: inline-block;
  padding: 4px 11px;
  border: 1px solid rgba(34, 224, 214, 0.42);
  border-radius: var(--r-pill);
  background: rgba(34, 224, 214, 0.08);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.03em;
  color: var(--c-accent-soft);
}

.page-news__item[data-cat="rule"] .page-news__cat {
  border-color: rgba(255, 185, 60, 0.42);
  background: rgba(255, 185, 60, 0.09);
  color: var(--c-data);
}

.page-news__item[data-cat="data"] .page-news__cat {
  border-color: rgba(255, 77, 157, 0.44);
  background: rgba(255, 77, 157, 0.09);
  color: var(--c-alert);
}

.page-news__item[data-cat="notice"] .page-news__cat {
  border-color: rgba(74, 222, 128, 0.38);
  background: rgba(74, 222, 128, 0.09);
  color: var(--c-ok);
}

.page-news__time {
  font-size: 12.5px;
  color: var(--c-muted);
}

.page-news__entry-title {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--c-text);
}

.page-news__entry-desc {
  display: block;
  max-width: 48em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-news__more {
  align-self: start;
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  font-size: 12.5px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--c-accent-soft);
  transition: border-color var(--t-fast), color var(--t-fast);
}

.page-news__entry-head:hover .page-news__more {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.page-news__more-close {
  display: none;
}

.page-news__entry[open] .page-news__more-open {
  display: none;
}

.page-news__entry[open] .page-news__more-close {
  display: inline;
}

.page-news__entry-body {
  padding: 0 6px clamp(22px, 2.6vw, 30px) calc(clamp(34px, 3.2vw, 50px) + var(--news-gap));
}

.page-news__points {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 54em;
}

.page-news__points li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-news__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--c-accent);
}

.page-news__entry-fig {
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--r-soft);
  overflow: hidden;
}

/* ---- 版本脉络 ---- */
.page-news__version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 44px);
  align-items: start;
}

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

.page-news__tl-item {
  display: grid;
  grid-template-columns: clamp(70px, 8vw, 96px) minmax(0, 1fr);
  gap: clamp(14px, 2vw, 24px);
  padding-bottom: clamp(24px, 3vw, 36px);
}

.page-news__tl-mark {
  position: relative;
  padding-left: 18px;
}

.page-news__tl-mark::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--c-accent);
  border-radius: 50%;
  background: var(--c-bg);
}

.page-news__tl-mark::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 22px;
  bottom: -18px;
  width: 1px;
  background: var(--c-line);
}

.page-news__tl-item:last-child .page-news__tl-mark::after {
  display: none;
}

.page-news__tl-ver {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 1.7vw, 19px);
  color: var(--c-data);
}

.page-news__tl-time {
  display: block;
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-news__tl-body h3 {
  margin: 0 0 10px;
  font-size: clamp(16px, 1.85vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--c-text);
}

.page-news__tl-body p {
  margin: 0 0 10px;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-news__tl-body ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-news__tl-body ul li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-news__tl-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 1px;
  background: var(--c-accent-soft);
}

.page-news__figure {
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-surface);
}

/* ---- 规则解读 ---- */
.page-news__rules-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 48px);
  align-items: start;
}

.page-news__cats {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.page-news__cat-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: clamp(12px, 2vw, 22px);
  align-items: baseline;
  padding: 16px 2px;
  border-bottom: 1px solid var(--c-line);
}

.page-news__cat-name {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--c-data);
}

.page-news__cat-desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-news__rules-tail {
  margin: 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-muted);
}

/* ---- 回溯与联系 ---- */
.page-news__follow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 26px);
}

.page-news__follow-card {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  background: var(--c-surface);
  transition: border-color var(--t-base), transform var(--t-base);
}

.page-news__follow-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
}

.page-news__follow-card--contact {
  background:
    linear-gradient(180deg, rgba(34, 224, 214, 0.06), transparent 62%),
    var(--c-surface);
}

.page-news__follow-card h3 {
  margin: 0 0 14px;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-text);
}

.page-news__follow-card p {
  margin: 0 0 14px;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-news__follow-btn {
  display: inline-flex;
  align-items: center;
  margin-top: 4px;
}

.page-news__contact {
  margin: 0 0 18px;
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 10px clamp(12px, 2vw, 20px);
}

.page-news__contact dt {
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--c-muted);
}

.page-news__contact dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text);
  overflow-wrap: anywhere;
}

.page-news__contact dd a {
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-news__contact-note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-news__contact-note:last-child {
  margin-bottom: 0;
}

@media (min-width: 760px) {
  .page-news__follow-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 1000px) {
  .page-news__masthead {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-news__version-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-news__rules-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }

  .page-news__figure--rules {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }
}

@media (max-width: 700px) {
  .page-news__entry-head {
    grid-template-columns: 30px minmax(0, 1fr);
  }

  .page-news__more {
    grid-column: 2;
    justify-self: start;
    margin-top: 12px;
  }

  .page-news__entry-body {
    padding-left: 30px;
  }

  .page-news__tl-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-left: 22px;
  }

  .page-news__tl-mark {
    padding-left: 0;
  }

  .page-news__tl-mark::before {
    left: -22px;
    top: 4px;
  }

  .page-news__tl-mark::after {
    left: -18px;
    top: 20px;
    bottom: -22px;
  }

  .page-news__cat-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-news__contact {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .page-news__contact dd {
    margin-bottom: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news__pill,
  .page-news__follow-card,
  .page-news__entry-head,
  .page-news__more,
  .page-news a {
    transition: none;
  }

  .page-news__pill:hover,
  .page-news__follow-card:hover {
    transform: none;
  }
}