.page-news {
  --news-band-gap: clamp(16px, 2.2vw, 28px);
  --news-pad-y: clamp(22px, 3vw, 40px);
  --news-tick: rgba(169, 123, 255, 0.66);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-news .topic-hero {
  position: relative;
  padding: clamp(24px, 4vw, 56px) 0 clamp(24px, 3vw, 40px);
  background:
    radial-gradient(120% 94% at 10% -12%, rgba(109, 59, 245, 0.3), transparent 62%),
    linear-gradient(180deg, var(--ink-850), var(--ink-900));
}

.page-news .topic-hero__frame {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(158deg, rgba(28, 18, 54, 0.86), rgba(8, 6, 15, 0.92));
  padding: clamp(20px, 3.2vw, 44px);
  margin-top: clamp(14px, 2vw, 22px);
}

.page-news .topic-hero__frame::before,
.page-news .topic-hero__frame::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--news-tick);
}

.page-news .topic-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-news .topic-hero__frame::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}

.page-news .topic-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.page-news .topic-hero__title {
  font-size: clamp(1.9rem, 5.2vw, 3.4rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--white);
  margin: 0.5rem 0 0;
  max-width: 20ch;
}

.page-news .topic-hero__lead {
  margin: clamp(14px, 1.6vw, 20px) 0 0;
  max-width: 60ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--text);
}

.page-news .topic-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.4vw, 30px);
}

.page-news .topic-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .topic-fact {
  background: rgba(12, 9, 24, 0.94);
  padding: clamp(12px, 1.6vw, 18px);
}

.page-news .topic-fact__key {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-news .topic-fact__val {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  line-height: 1.1;
  color: var(--white);
}

.page-news .topic-fact__unit {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-left: 4px;
}

.page-news .topic-hero__scan {
  margin-top: clamp(20px, 2.6vw, 32px);
  height: 2px;
  background: linear-gradient(90deg, rgba(109, 59, 245, 0.95), rgba(55, 230, 217, 0.85) 55%, rgba(42, 27, 77, 0) 100%);
}

/* ---------- 图片框 ---------- */
.page-news .topic-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-850);
  overflow: hidden;
}

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

.page-news .topic-figure--band {
  margin-top: clamp(20px, 3vw, 34px);
}

.page-news .topic-figure--inline {
  margin-top: clamp(12px, 1.6vw, 18px);
}

.page-news .topic-figure__cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.06em;
  color: var(--text-dim);
  background: rgba(8, 6, 15, 0.85);
}

/* ---------- 筛选与主题带 ---------- */
.page-news .topic-filter-section {
  background: var(--ink-900);
}

.page-news .topic-filter__bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-news .topic-filter__bar .tagwall__btn {
  flex: 0 0 auto;
  white-space: nowrap;
}

.page-news .topic-bands {
  margin-top: clamp(22px, 3vw, 40px);
  border: 1px solid var(--line);
}

.page-news .topic-band {
  padding: var(--news-pad-y) clamp(16px, 2.4vw, 32px);
  background: var(--ink-900);
  border-top: 1px solid var(--line);
}

.page-news .topic-band:first-child {
  border-top: 0;
}

.page-news .topic-band--alt {
  background: var(--ink-800);
}

.page-news .topic-band:has(.topic-item.is-filtered) {
  display: none;
}

.page-news .topic-band__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: clamp(14px, 1.8vw, 24px);
}

.page-news .topic-band__num {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .topic-band__name {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-news .topic-band__note {
  flex: 1 1 220px;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-news .topic-band__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-band-gap);
}

.page-news .topic-item {
  position: relative;
  padding: clamp(15px, 2vw, 22px);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(28, 18, 54, 0.72), rgba(12, 9, 24, 0.9));
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-news .topic-item:hover,
.page-news .topic-item:focus-within {
  border-color: var(--neon);
  transform: translateY(-2px);
}

.page-news .topic-item--lead {
  border-color: rgba(169, 123, 255, 0.5);
  background: linear-gradient(150deg, rgba(109, 59, 245, 0.24), rgba(12, 9, 24, 0.94) 68%);
  box-shadow: var(--glow-neon);
}

.page-news .topic-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 10px;
}

.page-news .topic-item__num {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--neon-soft);
  text-shadow: 0 0 10px rgba(169, 123, 255, 0.35);
}

.page-news .topic-item--lead .topic-item__num {
  color: var(--gold);
  font-size: 0.95rem;
  text-shadow: var(--glow-gold);
}

.page-news .topic-item__when {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-news .topic-item__title {
  margin: 0;
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--white);
}

.page-news .topic-item--lead .topic-item__title {
  font-size: clamp(1.45rem, 2.8vw, 2.1rem);
  line-height: 1.2;
  color: var(--white);
}

.page-news .topic-item__text {
  margin: 10px 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text);
}

.page-news .topic-item--lead .topic-item__text {
  font-size: 1rem;
  max-width: 52ch;
}

/* ---------- 专题线索引 ---------- */
.page-news .topic-lines-section {
  background: var(--ink-850);
}

.page-news .topic-line-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news .topic-line {
  display: grid;
  grid-template-columns: 2.4rem 4rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.page-news .topic-line:hover {
  background: rgba(109, 59, 245, 0.08);
  padding-left: 10px;
}

.page-news .topic-line__no {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--neon-soft);
}

.page-news .topic-line__key {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-news .topic-line__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-news .topic-line__issue {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.06em;
  color: var(--text-dim);
  white-space: nowrap;
}

.page-news .topic-lines__foot {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 更新节奏 ---------- */
.page-news .topic-cadence-section {
  background: var(--ink-900);
}

.page-news .topic-cadence__grid {
  align-items: start;
}

.page-news .topic-cadence__body .section__head {
  margin-bottom: clamp(14px, 1.8vw, 22px);
}

.page-news .cadence-steps {
  list-style: none;
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .cadence-step {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  background: rgba(18, 12, 34, 0.72);
}

.page-news .cadence-step__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.page-news .cadence-step__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 900;
  color: var(--white);
}

.page-news .cadence-step__text {
  margin: 6px 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text);
}

.page-news .topic-cadence__aside {
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 系列回顾 ---------- */
.page-news .topic-archive-section {
  background: var(--ink-800);
}

.page-news .topic-archive__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-news .topic-archive__list {
  display: grid;
  gap: 12px;
}

.page-news .series {
  border: 1px solid var(--line);
  background: rgba(12, 9, 24, 0.82);
}

.page-news .series[open] {
  border-left: 2px solid var(--cyan);
}

.page-news .series__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-news .series__summary::-webkit-details-marker {
  display: none;
}

.page-news .series__summary::after {
  content: "展开";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-news .series[open] .series__summary::after {
  content: "收起";
}

.page-news .series__name {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--white);
}

.page-news .series__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-news .series__body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--line);
  animation: news-series-in 0.24s var(--ease);
}

.page-news .series__body p {
  margin: 14px 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text);
}

.page-news .series__issues {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-news .series__issues li {
  position: relative;
  padding-left: 14px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-news .series__issues li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 5px;
  height: 5px;
  background: var(--neon-soft);
}

@keyframes news-series-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 线索与投稿 ---------- */
.page-news .topic-pitch-section {
  background: var(--ink-900);
}

.page-news .topic-pitch {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
  padding: clamp(22px, 3vw, 38px);
  border: 1px solid var(--line);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(109, 59, 245, 0.2), transparent 60%),
    linear-gradient(160deg, rgba(28, 18, 54, 0.7), rgba(8, 6, 15, 0.92));
}

.page-news .topic-pitch .section__title {
  margin: 0.4rem 0 0;
}

.page-news .topic-pitch__text {
  margin: clamp(12px, 1.6vw, 18px) 0 0;
  max-width: 62ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--text);
}

.page-news .topic-pitch__side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .topic-band__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .topic-item--lead {
    grid-column: 1 / -1;
  }

  .page-news .topic-cadence__aside {
    margin-top: 0;
  }

  .page-news .topic-archive__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

@media (min-width: 960px) {
  .page-news .topic-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

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

  .page-news .topic-band__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .topic-band--lead .topic-band__list {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-news .topic-band--lead .topic-item--lead {
    grid-column: auto;
    grid-row: span 1;
  }

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

@media (max-width: 560px) {
  .page-news .topic-line {
    grid-template-columns: 2.2rem minmax(0, 1fr);
    row-gap: 4px;
  }

  .page-news .topic-line__key {
    grid-column: 2;
  }

  .page-news .topic-line__name {
    grid-column: 2;
  }

  .page-news .topic-line__issue {
    grid-column: 2;
    white-space: normal;
  }

  .page-news .topic-pitch {
    padding: 18px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .topic-item,
  .page-news .topic-line {
    transition: none;
  }

  .page-news .series__body {
    animation: none;
  }
}
<<<END>>>