.page-news {
  --pn-cut: 18px;
  --pn-line: rgba(58, 58, 69, .14);
  --pn-line-dark: rgba(201, 203, 218, .2);
  --pn-card-top: rgba(75, 46, 131, .5);
  --pn-card-bottom: rgba(27, 19, 48, .92);
}

.page-news *,
.page-news *::before,
.page-news *::after {
  box-sizing: border-box;
}

.page-news .tt-section {
  overflow: hidden;
}

/* ---------- 索引头 ---------- */

.page-news .news-intro {
  padding-top: 40px;
}

.page-news .news-intro__grid {
  display: grid;
  gap: 26px;
  margin: 20px 0 30px;
}

.page-news .news-intro__copy h1 {
  font-family: var(--tt-font-display);
  font-weight: 900;
  font-size: clamp(31px, 7vw, 58px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--tt-purple);
  margin: 12px 0 16px;
  text-shadow: 0 0 30px rgba(75, 46, 131, .18);
}

.page-news .news-intro__copy .tt-lead {
  max-width: 44ch;
}

.page-news .news-intro__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  margin: 24px 0 0;
  padding: 0;
}

.page-news .news-intro__facts li {
  font-size: 14px;
  line-height: 1.5;
  color: var(--tt-stone);
  padding-left: 12px;
  border-left: 2px solid rgba(193, 116, 63, .55);
}

.page-news .news-intro__facts strong {
  display: block;
  font-family: var(--tt-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 21px;
  font-weight: 700;
  color: var(--tt-purple);
  letter-spacing: .01em;
}

.page-news .news-flip {
  position: relative;
  padding: 22px 20px 24px;
  color: var(--tt-cream);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(37, 224, 208, .18), transparent 60%),
    linear-gradient(158deg, #2c1c52 0%, var(--tt-night) 78%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pn-cut)), calc(100% - var(--pn-cut)) 100%, 0 100%);
}

.page-news .news-flip::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image:
    radial-gradient(circle at 16% 20%, rgba(37, 224, 208, .5) 0 1.5px, transparent 2px),
    radial-gradient(circle at 74% 66%, rgba(242, 180, 65, .45) 0 1.5px, transparent 2px),
    radial-gradient(circle at 42% 90%, rgba(255, 107, 87, .4) 0 1.5px, transparent 2px);
  background-size: 120px 120px, 160px 160px, 200px 200px;
}

.page-news .news-flip > * {
  position: relative;
  z-index: 1;
}

.page-news .news-flip__cap {
  display: block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--tt-neon);
  margin-bottom: 14px;
}

.page-news .news-flip__row {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.page-news .news-flip__d {
  position: relative;
  font-family: var(--tt-font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(60px, 17vw, 86px);
  line-height: .94;
  color: var(--tt-gold);
  background: rgba(11, 7, 22, .72);
  border: 1px solid rgba(242, 180, 65, .42);
  border-radius: 12px;
  padding: 6px 18px 8px;
  text-shadow: 0 0 26px rgba(242, 180, 65, .5);
}

.page-news .news-flip__d::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 50%;
  height: 1px;
  background: rgba(0, 0, 0, .55);
}

.page-news .news-flip__u {
  font-family: var(--tt-font-display);
  font-weight: 900;
  font-size: clamp(24px, 6vw, 34px);
  color: var(--tt-cream);
  padding-bottom: 8px;
}

.page-news .news-flip__note {
  display: block;
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--tt-silver);
}

.page-news .news-intro__figure {
  margin: 0;
}

.page-news .tt-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 章节头 ---------- */

.page-news .news-sec-head {
  max-width: 620px;
  margin-bottom: 26px;
}

.page-news .news-sec-head h2,
.page-news .news-digest__copy h2,
.page-news .news-archive__main h2,
.page-news .news-feedback h2 {
  font-family: var(--tt-font-display);
  font-weight: 900;
  font-size: clamp(25px, 5.4vw, 40px);
  line-height: 1.2;
  margin: 10px 0 12px;
}

.page-news .news-sec-head h2 {
  color: var(--tt-cream);
}

.page-news .news-sec-head__sub {
  font-size: 16px;
  line-height: 1.8;
  color: var(--tt-silver);
  margin: 0;
}

/* ---------- 筛选条 ---------- */

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.page-news .news-filter .tt-chip {
  font-family: inherit;
  font-size: 13px;
  letter-spacing: .04em;
  padding: 8px 15px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--tt-silver);
  background: rgba(246, 241, 231, .06);
  border: 1px solid var(--pn-line-dark);
  transition: transform .28s var(--tt-ease), background .28s var(--tt-ease), color .28s var(--tt-ease);
}

.page-news .news-filter .tt-chip:hover {
  transform: translateY(-2px);
  color: var(--tt-cream);
  border-color: rgba(37, 224, 208, .5);
}

.page-news .news-filter .tt-chip[aria-pressed="true"] {
  background: var(--tt-neon);
  border-color: var(--tt-neon);
  color: var(--tt-night);
  font-weight: 700;
}

.page-news .news-filter .tt-chip:focus-visible {
  outline: 2px solid var(--tt-gold);
  outline-offset: 3px;
}

/* ---------- 时间轴列表 ---------- */

.page-news .news-log-wrap {
  padding-bottom: 56px;
}

.page-news .news-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
}

.page-news .news-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--tt-neon) 0%, var(--tt-gold) 46%, var(--tt-coral) 100%);
  opacity: .55;
}

.page-news .news-item {
  position: relative;
  margin-bottom: 22px;
}

.page-news .news-item[hidden] {
  display: none;
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--tt-night);
  border: 2px solid var(--tt-neon);
  box-shadow: 0 0 0 4px rgba(37, 224, 208, .14);
  z-index: 2;
}

.page-news .news-card {
  position: relative;
  padding: 20px 18px 22px;
  color: var(--tt-cream);
  background: linear-gradient(162deg, var(--pn-card-top), var(--pn-card-bottom));
  border: 1px solid var(--pn-line-dark);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--pn-cut) 100%, 0 calc(100% - var(--pn-cut)));
  transition: transform .38s var(--tt-ease), border-color .38s var(--tt-ease), background .38s var(--tt-ease);
}

.page-news .news-card:hover,
.page-news .news-card:focus-within {
  transform: translateX(8px);
  border-color: rgba(37, 224, 208, .55);
  background: linear-gradient(162deg, rgba(75, 46, 131, .68), rgba(27, 19, 48, .96));
}

.page-news .news-card__figure {
  margin: 0 0 16px;
}

.page-news .news-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.page-news .news-card__time {
  position: relative;
  font-family: var(--tt-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--tt-night);
  background: var(--tt-gold);
  padding: 4px 10px;
  border-radius: 4px;
  transition: transform .38s var(--tt-ease);
}

.page-news .news-card__time::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 50%;
  width: 8px;
  height: 8px;
  background: inherit;
  transform: translateY(-50%) rotate(45deg);
}

.page-news .news-card:hover .news-card__time,
.page-news .news-card:focus-within .news-card__time {
  transform: translateX(2px);
}

.page-news .news-card__title {
  font-family: var(--tt-font-display);
  font-weight: 900;
  font-size: clamp(19px, 4.4vw, 25px);
  line-height: 1.35;
  color: #fff;
  margin: 0 0 10px;
}

.page-news .news-card__sum {
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(246, 241, 231, .84);
  margin: 0;
}

.page-news .news-card__scope {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--pn-line-dark);
  font-size: 13px;
  line-height: 1.7;
  color: var(--tt-silver);
}

.page-news .news-card__scope-k {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border-radius: 3px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--tt-night);
  background: var(--tt-coral);
  font-weight: 700;
}

.page-news .news-card__more {
  margin-top: 14px;
}

.page-news .news-card__more > summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--tt-neon);
  list-style: none;
}

.page-news .news-card__more > summary::-webkit-details-marker {
  display: none;
}

.page-news .news-card__more > summary::before {
  content: "+";
  font-family: var(--tt-font-mono);
  font-size: 15px;
  color: var(--tt-gold);
}

.page-news .news-card__more[open] > summary::before {
  content: "–";
}

.page-news .news-card__more > summary:focus-visible {
  outline: 2px solid var(--tt-gold);
  outline-offset: 3px;
}

.page-news .news-card__more .tt-details__body {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(246, 241, 231, .78);
}

.page-news .news-card__more ul {
  margin: 0;
  padding-left: 18px;
}

.page-news .news-card__more li {
  margin-bottom: 7px;
}

.page-news .news-card__more li:last-child {
  margin-bottom: 0;
}

.page-news .news-card__more li::marker {
  color: var(--tt-neon);
}

/* ---------- 本期一图读懂 ---------- */

.page-news .news-digest {
  padding-bottom: 54px;
}

.page-news .news-digest__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-news .news-digest__figure {
  margin: 0;
}

.page-news .news-digest__copy h2 {
  color: var(--tt-purple);
}

.page-news .news-digest__list {
  list-style: none;
  margin: 20px 0 26px;
  padding: 0;
}

.page-news .news-digest__list li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pn-line);
}

.page-news .news-digest__list li:first-child {
  border-top: 1px solid var(--pn-line);
}

.page-news .news-digest__no {
  font-family: var(--tt-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--tt-clay);
}

.page-news .news-digest__list h3 {
  font-family: var(--tt-font-display);
  font-size: 19px;
  font-weight: 900;
  color: var(--tt-stone);
  margin: 0 0 6px;
}

.page-news .news-digest__list p {
  font-size: 15px;
  line-height: 1.8;
  color: #4d4d59;
  margin: 0;
}

/* ---------- 分类回看 ---------- */

.page-news .news-archive {
  padding-bottom: 56px;
}

.page-news .news-archive__grid {
  display: grid;
  gap: 30px;
}

.page-news .news-archive__main h2 {
  color: var(--tt-cream);
}

.page-news .news-archive__lead {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(246, 241, 231, .8);
  margin: 0 0 24px;
}

.page-news .news-archive__cards {
  display: grid;
  gap: 14px;
}

.page-news .news-archive__card {
  padding: 18px 18px 20px;
  transition: transform .34s var(--tt-ease);
}

.page-news .news-archive__card:hover {
  transform: translateY(-4px) rotate(-.5deg);
}

.page-news .news-archive__figure {
  margin: 0;
}

/* ---------- 内容反馈 ---------- */

.page-news .news-feedback {
  padding-bottom: 56px;
}

.page-news .news-feedback h2 {
  color: var(--tt-purple);
}

.page-news .news-feedback__text {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.9;
  color: #4d4d59;
  margin: 0;
}

.page-news .news-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 16px;
}

.page-news .news-feedback__note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--tt-stone);
  opacity: .82;
  margin: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .news-list {
    padding-left: 36px;
  }

  .page-news .news-list::before {
    left: 7px;
  }

  .page-news .news-item::before {
    left: -36px;
    top: 32px;
  }

  .page-news .news-card {
    padding: 26px 26px 28px;
  }

  .page-news .news-archive__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-news .news-digest__list li {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-news .news-intro__grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, .78fr);
    align-items: end;
    gap: 44px;
    margin: 26px 0 36px;
  }

  .page-news .news-flip {
    padding: 26px 24px 28px;
  }

  .page-news .news-digest__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 48px;
  }
}

@media (min-width: 980px) {
  .page-news .news-archive__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .news-archive__figure {
    position: sticky;
    top: 96px;
  }

  .page-news .news-card {
    padding: 30px 32px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .news-card__time,
  .page-news .news-filter .tt-chip,
  .page-news .news-archive__card {
    transition: none;
  }

  .page-news .news-card:hover,
  .page-news .news-card:focus-within,
  .page-news .news-archive__card:hover,
  .page-news .news-filter .tt-chip:hover {
    transform: none;
  }
}