.page-news {
  --pn-series-line: rgba(124, 255, 224, 0.5);
  --pn-on-dark: rgba(242, 237, 228, 0.76);
  padding-bottom: clamp(48px, 8vw, 120px);
  color: var(--ak-ink);
}

/* ---------- 面包屑 ---------- */
.page-news .ak-crumbs {
  margin: 0 0 clamp(24px, 5vw, 44px);
}
.page-news .ak-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--ak-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ak-sage);
}
.page-news .ak-crumbs li + li::before {
  content: "/";
  margin-right: 0.6em;
  color: var(--ak-sage);
}
.page-news .ak-crumbs a {
  color: var(--ak-ink);
  text-decoration: none;
  border-bottom: 2px solid var(--ak-cyan);
}
.page-news .ak-crumbs a:hover {
  color: var(--ak-teal);
}

/* ---------- 首屏 ---------- */
.page-news__hero {
  padding-top: clamp(20px, 4vw, 40px);
  padding-bottom: clamp(34px, 6vw, 76px);
}
.page-news__hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 60px);
  align-items: end;
}
.page-news__title {
  margin: 14px 0 0;
  font-family: var(--ak-font-display);
  font-weight: 200;
  font-size: clamp(32px, 6vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.03em;
}
.page-news__lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 48ch;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.8;
  color: var(--ak-ink-soft);
}
.page-news__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-news__pulse {
  border: 2px solid var(--ak-ink);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
  background: var(--ak-night);
  color: var(--ak-cream);
  padding: clamp(20px, 3vw, 30px);
}
.page-news__pulse-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 20px;
  padding: 0;
  list-style: none;
}
.page-news__pulse-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(242, 237, 228, 0.16);
}
.page-news__pulse-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-news__pulse-num {
  font-family: var(--ak-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1;
  color: var(--ak-cyan);
}
.page-news__pulse-label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--pn-on-dark);
}
.page-news__pulse-viz {
  display: block;
  width: 100%;
  height: 54px;
  color: var(--ak-cyan);
}

/* ---------- 标签索引 + 条目流 ---------- */
.page-news__feed-section {
  padding-bottom: clamp(20px, 4vw, 40px);
}
.page-news__filters {
  position: relative;
}
.page-news__filter-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-news__board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
}

.page-news__index {
  display: grid;
  gap: 12px;
}
.page-news__index-title {
  margin: 0;
  font-family: var(--ak-font-display);
  font-weight: 300;
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: 0.01em;
}
.page-news__index-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ak-ink-soft);
}
.page-news__chips {
  display: grid;
  gap: 10px;
  margin-top: 4px;
}
.page-news__chip {
  display: grid;
  gap: 3px;
  padding: 12px 16px;
  border: 2px solid var(--ak-ink);
  border-radius: 12px;
  background: var(--ak-cream-2);
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}
.page-news__chip:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--ak-shadow-sm);
}
.page-news__chip-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.page-news__chip-desc {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ak-ink-soft);
}

#pn-f-all:checked ~ .page-news__board .page-news__chip[for="pn-f-all"],
#pn-f-season:checked ~ .page-news__board .page-news__chip[for="pn-f-season"],
#pn-f-version:checked ~ .page-news__board .page-news__chip[for="pn-f-version"],
#pn-f-data:checked ~ .page-news__board .page-news__chip[for="pn-f-data"],
#pn-f-device:checked ~ .page-news__board .page-news__chip[for="pn-f-device"] {
  background: var(--ak-green);
  color: var(--ak-cyan);
  box-shadow: var(--ak-shadow-sm);
}
#pn-f-all:checked ~ .page-news__board .page-news__chip[for="pn-f-all"] .page-news__chip-desc,
#pn-f-season:checked ~ .page-news__board .page-news__chip[for="pn-f-season"] .page-news__chip-desc,
#pn-f-version:checked ~ .page-news__board .page-news__chip[for="pn-f-version"] .page-news__chip-desc,
#pn-f-data:checked ~ .page-news__board .page-news__chip[for="pn-f-data"] .page-news__chip-desc,
#pn-f-device:checked ~ .page-news__board .page-news__chip[for="pn-f-device"] .page-news__chip-desc {
  color: var(--ak-cyan-soft);
}

#pn-f-season:checked ~ .page-news__board .page-news__item:not([data-cat~="season"]),
#pn-f-version:checked ~ .page-news__board .page-news__item:not([data-cat~="version"]),
#pn-f-data:checked ~ .page-news__board .page-news__item:not([data-cat~="data"]),
#pn-f-device:checked ~ .page-news__board .page-news__item:not([data-cat~="device"]) {
  display: none;
}

.page-news__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-news__item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(22px, 3vw, 34px) 0;
  border-top: 2px solid var(--ak-ink);
}
.page-news__item:last-child {
  border-bottom: 2px solid var(--ak-ink);
}
.page-news__item-no {
  padding-top: 4px;
  font-family: var(--ak-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ak-sage);
}
.page-news__item-body {
  min-width: 0;
}
.page-news__item-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--ak-font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--ak-sage);
}
.page-news__tag {
  display: inline-block;
  padding: 4px 11px;
  border: 1.5px solid var(--ak-ink);
  border-radius: 999px;
  font-family: var(--ak-font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ak-ink);
  background: var(--ak-cream-2);
}
.page-news__tag--season {
  background: var(--ak-cyan-soft);
}
.page-news__tag--version {
  background: var(--ak-amber);
}
.page-news__tag--data {
  background: var(--ak-cyan);
}
.page-news__tag--device {
  background: var(--ak-cream);
  border-color: var(--ak-orange);
}
.page-news__item-title {
  margin: 0 0 10px;
  font-family: var(--ak-font-display);
  font-weight: 300;
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.38;
  letter-spacing: -0.01em;
}
.page-news__item-sum {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ak-ink-soft);
}
.page-news__thumb {
  margin-top: 18px;
  max-width: 540px;
  border: 2px solid var(--ak-ink);
  border-radius: 12px;
  overflow: hidden;
  background: var(--ak-green);
  box-shadow: var(--ak-shadow-sm);
}
.page-news__thumb img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 专题系列 ---------- */
.page-news__series {
  margin-top: clamp(36px, 6vw, 72px);
  padding: clamp(46px, 8vw, 92px) 0;
  border-top: 2px solid var(--ak-ink);
  border-bottom: 2px solid var(--ak-ink);
  background: var(--ak-night);
  color: var(--ak-cream);
}
.page-news__series-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}
.page-news__series-title {
  margin: 10px 0 0;
  font-family: var(--ak-font-display);
  font-weight: 200;
  font-size: clamp(28px, 4.5vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ak-cream);
}
.page-news__series-intro {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--pn-on-dark);
}
.page-news__series-figure {
  border: 2px solid var(--ak-ink);
  border-radius: 12px;
  overflow: hidden;
  background: var(--ak-green);
  box-shadow: 6px 6px 0 rgba(0, 245, 212, 0.35);
}
.page-news__series-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news__series-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(236px, 292px);
  gap: 18px;
  margin-top: clamp(26px, 4vw, 44px);
  padding: 4px 4px 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.page-news__series-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 20px;
  border: 2px solid var(--pn-series-line);
  border-radius: var(--ak-radius);
  background: var(--ak-green);
  scroll-snap-align: start;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.page-news__series-card:hover {
  border-color: var(--ak-cyan);
  transform: translateY(-3px);
}
.page-news__series-no {
  margin: 0;
  font-family: var(--ak-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ak-cyan);
}
.page-news__series-card h3 {
  margin: 0;
  font-family: var(--ak-font-display);
  font-weight: 300;
  font-size: 19px;
  line-height: 1.42;
  color: var(--ak-cream);
}
.page-news__series-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--pn-on-dark);
}

/* ---------- 编辑精选 ---------- */
.page-news__picks {
  padding-top: clamp(46px, 7vw, 90px);
}
.page-news__picks-title {
  margin: 12px 0 0;
  font-family: var(--ak-font-display);
  font-weight: 200;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.page-news__picks-lede {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ak-ink-soft);
}
.page-news__picks-list {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}
.page-news__pick {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px;
  border: 2px solid var(--ak-ink);
  border-radius: var(--ak-radius);
  background: var(--ak-cream-2);
  box-shadow: var(--ak-shadow-sm);
}
.page-news__pick-no {
  font-family: var(--ak-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ak-teal);
}
.page-news__pick h3 {
  margin: 0;
  font-family: var(--ak-font-display);
  font-weight: 400;
  font-size: 18px;
  line-height: 1.46;
}
.page-news__pick p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--ak-ink-soft);
}
.page-news__pick-tag {
  display: inline-block;
  justify-self: start;
  margin-top: 2px;
  padding: 3px 10px;
  border: 1.5px solid var(--ak-ink);
  border-radius: 999px;
  font-family: var(--ak-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ak-ink);
  background: var(--ak-cream);
}

/* ---------- 更新与回看 ---------- */
.page-news__follow {
  padding-top: clamp(46px, 7vw, 90px);
}
.page-news__follow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
  align-items: start;
}
.page-news__follow-title {
  margin: 12px 0 0;
  font-family: var(--ak-font-display);
  font-weight: 200;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.page-news__follow p {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--ak-ink-soft);
}
.page-news__follow-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 34px);
}
.page-news__follow-side {
  padding: clamp(22px, 3vw, 32px);
  border: 2px solid var(--ak-ink);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
  background: var(--ak-night);
  color: var(--ak-cream);
}
.page-news__follow-steps {
  display: grid;
  gap: 16px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: pnstep;
}
.page-news__follow-steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--pn-on-dark);
}
.page-news__follow-steps li::before {
  counter-increment: pnstep;
  content: counter(pnstep, decimal-leading-zero);
  padding-top: 3px;
  font-family: var(--ak-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ak-cyan);
}

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .page-news__index {
    position: static;
  }
  .page-news__index-note {
    display: none;
  }
  .page-news__chips {
    display: flex;
    gap: 10px;
    margin-top: 2px;
    padding: 4px 2px 12px;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .page-news__chips::-webkit-scrollbar {
    display: none;
  }
  .page-news__chip {
    flex: 0 0 auto;
    min-width: 152px;
  }
  .page-news__chip-desc {
    font-size: 11.5px;
  }
  .page-news__series-track {
    grid-auto-columns: minmax(220px, 78vw);
  }
}

@media (min-width: 900px) {
  .page-news__hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
  .page-news__board {
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
  }
  .page-news__index {
    position: sticky;
    top: 96px;
  }
  .page-news__series-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  }
  .page-news__picks-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-news__follow-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
}

@media (min-width: 1180px) {
  .page-news__item:nth-child(even) {
    padding-left: clamp(0px, 4vw, 56px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news__chip,
  .page-news__series-card,
  .page-news__thumb {
    transition: none;
  }
  .page-news__chip:hover,
  .page-news__series-card:hover {
    transform: none;
  }
}