.page-news {
  --news-body: rgba(10, 12, 16, .74);
  --news-num-w: 140px;
  display: block;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- hero ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(22px, 4vw, 40px) 0 clamp(48px, 7vw, 88px);
  background:
    radial-gradient(90% 130% at 92% -20%, rgba(45, 99, 245, .28) 0%, rgba(45, 99, 245, 0) 58%),
    radial-gradient(70% 100% at 4% 120%, rgba(233, 178, 60, .14) 0%, rgba(233, 178, 60, 0) 60%),
    linear-gradient(168deg, #0A0C10 0%, #12151C 52%, #161A21 100%);
  color: var(--on-dark);
  overflow: hidden;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(233, 178, 60, .55), transparent);
}

.page-news .news-hero .container {
  position: relative;
  z-index: 1;
}

.page-news .news-hero .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(28px, 5vw, 48px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--on-dark-faint);
}

.page-news .news-hero .crumbs a {
  color: var(--on-dark-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-news .news-hero .crumbs a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-news .news-hero .crumbs [aria-current="page"] {
  color: var(--gold);
}

.page-news .crumb-sep {
  color: var(--on-dark-faint);
}

.page-news .news-hero .eyebrow {
  color: var(--volt-soft);
}

.page-news .news-hero .h-display {
  margin: 14px 0 0;
  color: var(--on-dark);
}

.page-news .news-hero .lede {
  max-width: 60ch;
  margin: 18px 0 0;
  color: var(--on-dark-soft);
}

/* ---------- 速览条 ---------- */
.page-news .brief-bar {
  position: relative;
  margin-top: clamp(34px, 5vw, 58px);
  display: grid;
  gap: 22px;
  padding: clamp(20px, 3vw, 30px) clamp(18px, 3vw, 34px);
  border: 1px solid var(--line-dark-2);
  border-radius: 3px;
  background: linear-gradient(180deg, rgba(246, 243, 236, .055), rgba(246, 243, 236, .012));
}

.page-news .brief-side {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-news .brief-stamp {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-news .brief-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 0 rgba(233, 178, 60, .55);
  animation: newsPulse 2.4s cubic-bezier(.2, .7, .2, 1) infinite;
}

@keyframes newsPulse {
  0% { box-shadow: 0 0 0 0 rgba(233, 178, 60, .55); }
  70% { box-shadow: 0 0 0 10px rgba(233, 178, 60, 0); }
  100% { box-shadow: 0 0 0 0 rgba(233, 178, 60, 0); }
}

.page-news .brief-title {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.4;
  color: var(--on-dark);
}

.page-news .brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .brief-list li {
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-dark-soft);
}

.page-news .brief-idx {
  display: inline-block;
  margin-right: 9px;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold);
  vertical-align: 1px;
}

@media (min-width: 900px) {
  .page-news .brief-bar {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 0 44px;
    align-items: start;
  }
  .page-news .brief-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }
  .page-news .brief-list li {
    padding: 0 22px;
    border-left: 1px solid var(--line-dark);
  }
  .page-news .brief-list li:first-child {
    padding-left: 0;
    border-left: 0;
  }
  .page-news .brief-list li:last-child {
    padding-right: 0;
  }
}

/* ---------- 日志流 ---------- */
.page-news .log-stream {
  padding: clamp(44px, 7vw, 92px) 0 clamp(20px, 4vw, 36px);
  background: var(--paper);
}

.page-news .filter-input {
  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 .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 30px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}

.page-news .filter-key {
  margin-right: 6px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mute);
}

.page-news .filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink);
  cursor: pointer;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease), color var(--t) var(--ease);
}

.page-news .filter-chip:hover {
  border-color: var(--gold);
  color: var(--gold-deep);
}

.page-news #lf-all:checked ~ .filter-bar label[for="lf-all"],
.page-news #lf-version:checked ~ .filter-bar label[for="lf-version"],
.page-news #lf-guide:checked ~ .filter-bar label[for="lf-guide"],
.page-news #lf-access:checked ~ .filter-bar label[for="lf-access"] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--on-dark);
}

.page-news #lf-version:checked ~ .filter-bar label[for="lf-version"] {
  border-color: var(--gold);
  background: rgba(233, 178, 60, .16);
  color: var(--gold-deep);
}

.page-news #lf-guide:checked ~ .filter-bar label[for="lf-guide"] {
  border-color: var(--volt);
  background: rgba(45, 99, 245, .1);
  color: var(--volt-deep);
}

.page-news #lf-access:checked ~ .filter-bar label[for="lf-access"] {
  border-color: var(--mute);
  background: rgba(110, 116, 128, .1);
  color: var(--ink);
}

.page-news #lf-all:focus-visible ~ .filter-bar label[for="lf-all"],
.page-news #lf-version:focus-visible ~ .filter-bar label[for="lf-version"],
.page-news #lf-guide:focus-visible ~ .filter-bar label[for="lf-guide"],
.page-news #lf-access:focus-visible ~ .filter-bar label[for="lf-access"] {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-news #lf-version:checked ~ .g-guide,
.page-news #lf-version:checked ~ .g-access,
.page-news #lf-guide:checked ~ .g-version,
.page-news #lf-guide:checked ~ .g-access,
.page-news #lf-access:checked ~ .g-version,
.page-news #lf-access:checked ~ .g-guide {
  display: none;
}

/* ---------- 分组 ---------- */
.page-news .log-group {
  padding-top: clamp(34px, 5vw, 60px);
  scroll-margin-top: 96px;
}

.page-news .log-group + .log-group {
  margin-top: clamp(40px, 6vw, 76px);
  border-top: 1px solid var(--rule);
}

.page-news .log-head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-news .log-code {
  display: block;
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--mute);
}

.page-news .log-head .h-section {
  margin: 0 0 12px;
}

.page-news .log-intro {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--news-body);
}

.page-news .group-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

@media (min-width: 860px) {
  .page-news .log-head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 38ch);
    align-items: end;
    gap: 0 56px;
  }
  .page-news .log-code {
    grid-column: 1 / -1;
  }
  .page-news .log-head .h-section {
    margin-bottom: 0;
  }
  .page-news .log-intro {
    padding-bottom: 6px;
  }
}

/* ---------- 列表 ---------- */
.page-news .log-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .log-list::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--rule);
}

.page-news .log-item {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 22px 34px 22px 20px;
  transition: background var(--t) var(--ease);
}

.page-news .log-item + .log-item,
.page-news .log-item + .log-break,
.page-news .log-break + .log-item {
  border-top: 1px solid var(--rule);
}

.page-news .log-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform var(--t-slow) var(--ease);
  z-index: 1;
}

.page-news .log-item::after {
  content: "→";
  position: absolute;
  right: 12px;
  top: 26px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--gold);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-news .log-item:hover {
  background: #FFFBEF;
}

.page-news .log-item:hover::before,
.page-news .log-item:focus-within::before {
  transform: scaleY(1);
}

.page-news .log-item:hover::after,
.page-news .log-item:focus-within::after {
  opacity: 1;
  transform: translateX(0);
}

.page-news .log-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.page-news .log-num {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ink);
}

.page-news .log-tag {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.6;
}

.page-news .log-tag--version { color: var(--gold-deep); }
.page-news .log-tag--guide { color: var(--volt-deep); }
.page-news .log-tag--access { color: var(--mute); }

.page-news .log-when {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mute);
}

.page-news .log-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-news .log-text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--news-body);
}

.page-news .log-break {
  padding: 22px 20px 22px 20px;
}

.page-news .log-break .figure {
  margin: 0;
}

@media (min-width: 768px) {
  .page-news .log-item {
    grid-template-columns: var(--news-num-w) minmax(0, 1fr);
    gap: 0 30px;
    align-items: start;
    padding: 26px 42px 26px 28px;
  }
  .page-news .log-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-top: 2px;
  }
  .page-news .log-item::after {
    right: 12px;
    top: 30px;
  }
  .page-news .log-break {
    padding: 26px 24px 26px 28px;
  }
}

/* ---------- 专题系列 ---------- */
.page-news .topic-band {
  padding: clamp(48px, 7vw, 96px) 0 clamp(40px, 6vw, 72px);
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  color: var(--on-dark);
  overflow: hidden;
}

.page-news .topic-band .eyebrow {
  color: var(--volt-soft);
}

.page-news .topic-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-news .topic-head .h-section {
  margin: 12px 0 0;
  color: var(--on-dark);
}

.page-news .topic-lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-dark-soft);
}

.page-news .topic-rail {
  list-style: none;
  display: flex;
  gap: 18px;
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 4px clamp(32px, 8vw, 132px) 24px clamp(20px, 5vw, 72px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-deep) rgba(226, 220, 206, .14);
}

.page-news .topic-rail > li {
  flex: 0 0 min(78vw, 316px);
  scroll-snap-align: start;
  display: flex;
}

.page-news .topic-rail::-webkit-scrollbar {
  height: 5px;
}

.page-news .topic-rail::-webkit-scrollbar-track {
  background: rgba(226, 220, 206, .14);
  border-radius: 3px;
}

.page-news .topic-rail::-webkit-scrollbar-thumb {
  background: var(--gold-deep);
  border-radius: 3px;
}

.page-news .topic-rail::-webkit-scrollbar-thumb:hover {
  background: var(--gold);
}

.page-news .topic-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 330px;
  padding: 18px;
  border: 1px solid var(--line-dark-2);
  border-radius: 3px;
  background: linear-gradient(180deg, rgba(246, 243, 236, .06), rgba(246, 243, 236, .015));
  text-decoration: none;
  color: inherit;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-news .topic-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-news .topic-fig {
  margin: 0 0 16px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.page-news .topic-idx {
  display: block;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-news .topic-name {
  margin: 8px 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--on-dark);
}

.page-news .topic-desc {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark-soft);
}

.page-news .topic-go {
  margin-top: auto;
  display: block;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--volt-soft);
  transition: color var(--t) var(--ease);
}

.page-news .topic-card:hover .topic-go {
  color: var(--gold);
}

/* ---------- 归档 ---------- */
.page-news .archive {
  padding: clamp(44px, 7vw, 92px) 0 clamp(52px, 8vw, 104px);
  background: var(--paper);
}

.page-news .archive-frame {
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: #FFFFFF;
  box-shadow: var(--sh-1);
  overflow: hidden;
}

.page-news .archive-side {
  padding: clamp(24px, 3vw, 38px);
  background: linear-gradient(160deg, var(--ink-2) 0%, var(--ink) 100%);
  color: var(--on-dark);
}

.page-news .archive-kicker {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-news .archive-side .h-section {
  margin: 0 0 14px;
  color: var(--on-dark);
}

.page-news .archive-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--on-dark-soft);
}

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

.page-news .archive-row + .archive-row {
  border-top: 1px solid var(--rule);
}

.page-news .archive-row a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 18px;
  row-gap: 3px;
  padding: 16px clamp(20px, 3vw, 34px);
  text-decoration: none;
  color: var(--ink);
  transition: background var(--t) var(--ease);
}

.page-news .archive-row a:hover {
  background: #FFFBEF;
}

.page-news .arc-name {
  grid-column: 1;
  grid-row: 1;
  font-size: 15.5px;
  font-weight: 700;
  transition: color var(--t) var(--ease);
}

.page-news .archive-row a:hover .arc-name {
  color: var(--gold-deep);
}

.page-news .arc-range {
  grid-column: 1;
  grid-row: 2;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mute);
}

.page-news .arc-count {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--gold-deep);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-news .archive-row a:hover .arc-count,
.page-news .archive-row a:focus-visible .arc-count {
  opacity: 1;
  transform: translateX(0);
}

.page-news .archive-row a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

@media (min-width: 900px) {
  .page-news .archive-frame {
    display: grid;
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .brief-pulse {
    animation: none;
  }
  .page-news .log-item::before,
  .page-news .log-item::after,
  .page-news .arc-count,
  .page-news .topic-card {
    transition: none;
  }
  .page-news .topic-card:hover {
    transform: none;
  }
}