.page-news {
  --pn-gap: clamp(20px, 3vw, 40px);
  --pn-card-bg: linear-gradient(150deg, rgba(20, 61, 49, 0.55), rgba(11, 15, 14, 0.25));
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-news .crumbs {
  padding-top: clamp(14px, 2.4vw, 26px);
}

.page-news img {
  max-width: 100%;
}

.page-news figure {
  margin: 0;
}

.page-news figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-news__hero {
  padding: clamp(18px, 3vw, 34px) 0 clamp(28px, 4vw, 52px);
}

.page-news__hero-grid {
  display: grid;
  gap: var(--pn-gap);
  align-items: end;
}

.page-news__hero-copy h1 {
  font-family: var(--font-condensed);
  font-size: clamp(42px, 10vw, 96px);
  line-height: 0.94;
  letter-spacing: -0.02em;
  margin: 10px 0 0;
  color: var(--fog);
}

.page-news__lead {
  max-width: 46ch;
  margin: 16px 0 0;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.72;
  color: var(--graphite);
}

.page-news__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-news__hero-figure {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius);
  position: relative;
}

.page-news__hero-figure::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 92px;
  height: 92px;
  background: var(--lime);
  opacity: 0.16;
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
  pointer-events: none;
}

/* ---------- 横向主题带 ---------- */
.page-news__focus {
  padding-top: clamp(24px, 4vw, 48px);
}

.page-news__bands {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
  margin-top: clamp(16px, 2.5vw, 26px);
}

.page-news__band {
  --band-accent: var(--amber);
  position: relative;
  display: grid;
  gap: 14px;
  padding: clamp(16px, 2.4vw, 24px);
  background: linear-gradient(115deg, rgba(232, 240, 234, 0.07), rgba(232, 240, 234, 0.02));
  border-left: 3px solid var(--band-accent);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-news__band--violet {
  --band-accent: var(--violet);
}

.page-news__band--blue {
  --band-accent: var(--blue);
}

.page-news__band::after {
  content: "";
  position: absolute;
  inset: 0 0 auto auto;
  width: 68px;
  height: 68px;
  background: var(--band-accent);
  opacity: 0.15;
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  pointer-events: none;
}

.page-news__band-figure {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 2px;
  background: var(--deep);
}

.page-news__band-no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--band-accent);
}

.page-news__band-body h3 {
  margin: 8px 0 0;
  font-family: var(--font-condensed);
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.25;
  color: var(--fog);
}

.page-news__band-body p:not(.page-news__band-no) {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
}

.page-news__band-link {
  justify-self: start;
  align-self: center;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--band-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 240, 234, 0.2);
  padding-bottom: 3px;
}

.page-news__band-link:hover,
.page-news__band-link:focus-visible {
  color: var(--fog);
  border-bottom-color: var(--band-accent);
}

/* ---------- 编辑台 ---------- */
.page-news__desk {
  padding-top: clamp(36px, 6vw, 76px);
}

.page-news__desk-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-news__index-title {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

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

.page-news__index-list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--fog);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-news__index-list a:hover,
.page-news__index-list a:focus-visible {
  color: var(--lime);
  padding-left: 6px;
}

.page-news__index-list span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--graphite);
}

.page-news__rail {
  margin-top: 20px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
}

.page-news__rail summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fog);
}

.page-news__rail summary::-webkit-details-marker {
  display: none;
}

.page-news__rail summary::after {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--lime);
}

.page-news__rail[open] summary::after {
  content: "－";
}

.page-news__rail[open] summary {
  margin-bottom: 10px;
}

.page-news__rail-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 9px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--graphite);
}

.page-news__rail-tag {
  display: inline-block;
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue);
}

.page-news__rail-note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--graphite);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

/* ---------- 筛选与条目流 ---------- */
.page-news__stage {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-content: flex-start;
  min-width: 0;
}

.page-news__stage-title {
  flex: 1 0 100%;
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-news__filter {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news__chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--graphite);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  user-select: none;
}

.page-news__chip:hover {
  border-color: var(--line-strong);
  color: var(--fog);
}

.page-news__filter:checked + .page-news__chip {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-news__filter:focus-visible + .page-news__chip {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-news__feed {
  flex: 1 0 100%;
  margin-top: clamp(10px, 2vw, 18px);
  border-top: 1px solid var(--line-strong);
}

.page-news__filter--version:checked ~ .page-news__feed .feed-item:not(.feed-item--version),
.page-news__filter--venue:checked ~ .page-news__feed .feed-item:not(.feed-item--venue),
.page-news__filter--data:checked ~ .page-news__feed .feed-item:not(.feed-item--data),
.page-news__filter--guide:checked ~ .page-news__feed .feed-item:not(.feed-item--guide),
.page-news__filter--notice:checked ~ .page-news__feed .feed-item:not(.feed-item--notice) {
  display: none;
}

.feed-item {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 6px 10px;
  padding: clamp(16px, 2.4vw, 22px) 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease, padding-left 0.2s ease;
}

.feed-item:hover {
  background: rgba(232, 240, 234, 0.04);
  padding-left: 10px;
}

.feed-item__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--graphite);
  padding-top: 3px;
}

.feed-item__body {
  min-width: 0;
}

.feed-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.feed-item__time {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--graphite);
}

.feed-item__title {
  margin: 8px 0 0;
  font-family: var(--font-condensed);
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.32;
  color: var(--fog);
}

.feed-item:hover .feed-item__no {
  color: var(--lime);
}

.feed-item__summary {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feed-item:hover .feed-item__summary,
.feed-item:focus-within .feed-item__summary {
  -webkit-line-clamp: 8;
}

/* ---------- 专题系列 ---------- */
.page-news__series {
  padding-top: clamp(40px, 6vw, 80px);
}

.page-news__series-intro {
  max-width: 56ch;
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
}

.page-news__series-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 82%);
  gap: 14px;
  margin-top: clamp(18px, 2.6vw, 26px);
  overflow-x: auto;
  padding: 2px 2px 14px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.series-card {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--pn-card-bg);
}

.series-card__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.series-card h3 {
  margin: 0;
  font-family: var(--font-condensed);
  font-size: 20px;
  line-height: 1.3;
  color: var(--fog);
}

.series-card p:not(.series-card__year) {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--graphite);
}

.series-card__link {
  margin-top: auto;
  padding-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
  text-decoration: none;
}

.series-card__link:hover,
.series-card__link:focus-visible {
  color: var(--fog);
}

/* ---------- 反馈 ---------- */
.page-news__feedback {
  padding-top: clamp(40px, 6vw, 80px);
}

.page-news__feedback-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.feedback-card {
  --fb-accent: var(--amber);
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-top: 2px solid var(--fb-accent);
  border-radius: var(--radius);
  background: var(--glass);
}

.feedback-card--blue {
  --fb-accent: var(--blue);
}

.feedback-card h3 {
  margin: 0;
  font-family: var(--font-condensed);
  font-size: 20px;
  color: var(--fog);
}

.feedback-card p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--graphite);
}

.feedback-card__contact {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fog) !important;
  word-break: break-all;
}

.feedback-card .btn {
  margin-top: 16px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news__band {
    grid-template-columns: 172px minmax(0, 1fr);
    align-items: center;
    column-gap: 20px;
  }

  .page-news__band-link {
    grid-column: 2;
  }

  .page-news__feedback-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news__hero-grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  }

  .page-news__hero-figure {
    aspect-ratio: 5 / 4;
  }

  .page-news__band {
    grid-template-columns: 200px minmax(0, 1fr) auto;
  }

  .page-news__band-link {
    grid-column: auto;
    justify-self: end;
  }

  .page-news__series-track {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow-x: visible;
    padding-bottom: 0;
  }
}

@media (min-width: 980px) {
  .page-news__desk-grid {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-news__index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .feed-item {
    grid-template-columns: 2.6rem minmax(0, 1fr);
    gap: 6px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news__index-list a,
  .feed-item,
  .page-news__chip,
  .page-news__band-link {
    transition: none;
  }
}