.page-news {
  --news-gap: clamp(18px, 2.4vw, 30px);
}

/* ============ HERO ============ */
.page-news .news-hero {
  position: relative;
  padding: clamp(40px, 6vw, 84px) 0 clamp(36px, 5.5vw, 76px);
  background: linear-gradient(140deg, var(--ink) 0%, var(--ink-3) 55%, var(--ink-2) 100%);
  overflow: hidden;
}
.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: -25%;
  right: -10%;
  width: 58%;
  height: 165%;
  background: linear-gradient(200deg, rgba(30, 107, 255, 0.22) 0%, rgba(56, 214, 255, 0.07) 42%, transparent 72%);
  transform: skewX(-14deg);
  pointer-events: none;
}
.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--cyan) 40%, var(--orange) 75%, transparent 100%);
  opacity: 0.55;
}
.page-news .news-hero .container {
  position: relative;
  z-index: 1;
}
.page-news .news-hero .breadcrumbs {
  margin-bottom: clamp(24px, 4vw, 40px);
}
.page-news .news-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: end;
}
.page-news .news-hero-main h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.1rem, 6.2vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 14px 0 18px;
  max-width: 15ch;
}
.page-news .news-hero-main .lede {
  max-width: 58ch;
  color: var(--text-soft);
  font-size: clamp(0.95rem, 1.1vw, 1.06rem);
  line-height: 1.78;
}
.page-news .news-hero-main .eyebrow {
  color: var(--cyan);
}

.page-news .news-cadence {
  border: 1px solid var(--line-dark);
  border-left: 2px solid var(--orange);
  background: rgba(17, 27, 46, 0.6);
  backdrop-filter: blur(6px);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.page-news .cadence-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 14px;
}
.page-news .news-cadence ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-news .news-cadence li {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--text-soft);
}
.page-news .news-cadence li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-news .news-cadence li span:first-child {
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.04em;
  color: var(--amber);
}

/* ============ 日志列表 ============ */
.page-news .news-filter-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 40px);
  margin-top: clamp(26px, 4vw, 44px);
}
.page-news .news-filter-rail .cadence-label {
  margin-bottom: 12px;
}
.page-news .news-filter-rail .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-news .news-filter-rail .filter-btn {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  padding: 8px 14px;
  border-radius: 4px;
  border: 1px solid var(--line-dark);
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.page-news .news-filter-rail .filter-btn:hover {
  border-color: var(--blue);
  color: var(--paper);
}
.page-news .news-filter-rail .filter-btn[aria-pressed="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}
.page-news .news-filter-rail .filter-status {
  margin: 14px 0 0;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-news .news-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}
.page-news .log-card {
  border: 1px solid var(--line-dark);
  background: var(--ink-2);
  border-radius: var(--radius);
  padding: clamp(18px, 2.1vw, 26px);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-news .log-card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-1);
}
.page-news .log-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.page-news .log-num {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.04em;
}
.page-news .log-time {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--text-mute);
}
.page-news .tag--data {
  background: rgba(56, 214, 255, 0.14);
  color: var(--cyan);
  border: 1px solid rgba(56, 214, 255, 0.38);
}
.page-news .log-card h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.24rem, 2vw, 1.55rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 10px;
}
.page-news .log-card > p {
  margin: 0 0 14px;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--text-soft);
}
.page-news .log-card .disclosure {
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}
.page-news .log-card .disclosure summary {
  list-style: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.page-news .log-card .disclosure summary::-webkit-details-marker {
  display: none;
}
.page-news .log-card .disclosure summary::before {
  content: "+";
  color: var(--orange);
  font-size: 0.95rem;
  line-height: 1;
}
.page-news .log-card .disclosure[open] summary::before {
  content: "−";
}
.page-news .log-card .disclosure-body {
  margin-top: 10px;
  font-size: 0.89rem;
  line-height: 1.75;
  color: var(--text-mute);
}

/* ============ 版本时间线 ============ */
.page-news .news-timeline {
  position: relative;
  overflow: hidden;
}
.page-news .news-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(160deg, rgba(30, 107, 255, 0.12), transparent 68%);
  pointer-events: none;
}
.page-news .news-timeline .container {
  position: relative;
  z-index: 1;
}
.page-news .timeline-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(26px, 4vw, 42px);
}
.page-news .timeline-axis {
  width: 100%;
  height: auto;
  display: block;
  max-width: 560px;
}
.page-news .axis-labels {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  fill: var(--text-mute);
  text-anchor: middle;
}
.page-news .timeline-note {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--text-mute);
}
.page-news .timeline-items {
  --tl-pad: clamp(18px, 2.6vw, 28px);
  padding-left: var(--tl-pad);
  border-left: 1px solid var(--line-dark);
}
.page-news .timeline-item {
  position: relative;
  padding-bottom: clamp(22px, 3vw, 32px);
}
.page-news .timeline-item:last-child {
  padding-bottom: 0;
}
.page-news .timeline-item::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-pad) * -1 - 4px);
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(30, 107, 255, 0.16);
}
.page-news .timeline-item[data-current]::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 26, 0.22);
}
.page-news .version-tag {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.page-news .timeline-item[data-current] .version-tag {
  color: var(--amber);
}
.page-news .timeline-item h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.12rem, 1.8vw, 1.38rem);
  line-height: 1.2;
  color: var(--paper);
  margin: 0 0 8px;
}
.page-news .timeline-item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--text-soft);
  max-width: 56ch;
}
.page-news .timeline-media {
  margin: clamp(28px, 4vw, 48px) 0 0;
}

/* ============ 通道适配（浅色） ============ */
.page-news .news-channel .eyebrow {
  color: var(--blue-deep);
}
.page-news .news-channel h2 {
  color: var(--ink);
}
.page-news .news-channel .lede {
  color: var(--text-on-light);
}
.page-news .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 42px);
  margin-top: clamp(26px, 4vw, 40px);
}
.page-news .channel-media {
  margin: 0;
}
.page-news .channel-records {
  display: grid;
  gap: 14px;
}
.page-news .channel-record {
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--line-ink);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
}
.page-news .channel-time {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.05em;
  color: var(--blue-deep);
}
.page-news .channel-record h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.08rem;
  line-height: 1.24;
  color: var(--ink);
  margin: 0 0 6px;
}
.page-news .channel-record p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-on-light);
}

/* ============ 体验优化 ============ */
.page-news .service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  margin-top: clamp(26px, 4vw, 42px);
  align-items: start;
}
.page-news .service-items {
  display: grid;
}
.page-news .service-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line-dark);
}
.page-news .service-item:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-news .service-index {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--orange);
  padding-top: 3px;
  letter-spacing: 0.04em;
}
.page-news .service-item h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.08rem, 1.7vw, 1.28rem);
  line-height: 1.24;
  color: var(--paper);
  margin: 0 0 6px;
}
.page-news .service-item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--text-soft);
}
.page-news .service-media {
  margin: 0;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

/* ============ 专题与订阅 ============ */
.page-news .topic-band {
  position: relative;
  margin-top: clamp(26px, 4vw, 42px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
}
.page-news .topic-band-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  pointer-events: none;
}
.page-news .topic-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-news .topic-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: rgba(11, 15, 20, 0.72);
  backdrop-filter: blur(4px);
}
.page-news .topic-label {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 3px;
  color: var(--ink);
  background: var(--amber);
}
.page-news .topic-label--blue {
  background: var(--blue);
  color: var(--paper);
}
.page-news .topic-label--cyan {
  background: var(--cyan);
  color: var(--ink);
}
.page-news .topic-label--orange {
  background: var(--orange);
  color: var(--ink);
}
.page-news .topic-label--violet {
  background: var(--violet);
  color: var(--paper);
}
.page-news .topic-card h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.05rem, 1.7vw, 1.24rem);
  line-height: 1.25;
  color: var(--paper);
  margin: 0;
}
.page-news .topic-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-soft);
}
.page-news .topic-card .link-arrow {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.77rem;
  letter-spacing: 0.04em;
}

.page-news .news-subscribe {
  margin-top: clamp(26px, 3.6vw, 42px);
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--line-dark);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: rgba(17, 27, 46, 0.5);
}
.page-news .news-subscribe .mono {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-news .news-subscribe > p:not(.mono) {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--text-soft);
}
.page-news .news-subscribe-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-news .news-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .log-card:nth-child(even) {
    margin-top: clamp(22px, 3vw, 40px);
  }
  .page-news .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-hero-grid {
    grid-template-columns: 1.55fr 0.92fr;
  }
  .page-news .news-filter-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }
  .page-news .news-filter-rail {
    position: sticky;
    top: 96px;
    padding-right: 24px;
    border-right: 1px solid var(--line-dark);
  }
  .page-news .news-filter-rail .filter-bar {
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
  }
  .page-news .news-filter-rail .filter-btn {
    text-align: left;
  }
  .page-news .channel-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
  .page-news .service-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
  }
  .page-news .timeline-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.25fr);
    align-items: start;
  }
  .page-news .timeline-visual {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1180px) {
  .page-news .topic-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-news .news-cadence li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .page-news .news-subscribe-actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .log-card,
  .page-news .news-filter-rail .filter-btn {
    transition: color 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease);
  }
}
</main>