.page-news {
  --news-serif: Georgia, "Songti SC", "STSong", "SimSun", serif;
  --news-violet: #9a8cff;
  --news-mint: #5ee0c4;
  background: var(--space-navy);
}

.page-news .breadcrumbs {
  padding-top: 28px;
}

.page-news .news-hero {
  position: relative;
  padding: 44px 0 40px;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.page-news .news-hero__kicker {
  display: inline-block;
  color: var(--gold);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  margin-bottom: 14px;
  padding-left: 18px;
  position: relative;
}

.page-news .news-hero__kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bright-cyan);
  transform: translateY(-50%);
}

.page-news .news-hero h1 {
  font-family: var(--font-heading);
  font-size: var(--h1-size);
  line-height: 1.18;
  color: var(--text-primary);
  max-width: 19em;
  margin-bottom: 18px;
}

.page-news .news-hero > p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 62ch;
  margin: 0;
}

.page-news .news-hero::after {
  content: "";
  display: block;
  width: 140px;
  height: 4px;
  background: var(--glow-gradient);
  border-radius: 4px;
  margin-top: 28px;
}

.page-news .news-layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 8px;
}

.page-news .filter-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-news .news-sidebar {
  background: var(--surface-alt);
  border: 3px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 24px 20px 20px;
  box-shadow: var(--shadow-hard);
}

.page-news .news-sidebar__heading {
  font-family: var(--font-heading);
  font-size: var(--h3-size);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border-subtle);
}

.page-news .filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .filter-label {
  display: block;
  flex: 1 1 calc(50% - 10px);
  min-width: 108px;
  padding: 12px 16px;
  border: 2px solid var(--border-subtle);
  border-radius: 999px;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: center;
  cursor: pointer;
  user-select: none;
  background: transparent;
  transition: border-color var(--transition), color var(--transition), background var(--transition), box-shadow var(--transition);
}

.page-news .filter-label:hover {
  border-color: var(--gold);
  color: var(--gold-light);
}

.page-news #filter-all:checked ~ .news-sidebar .filter-label[for="filter-all"],
.page-news #filter-announcement:checked ~ .news-sidebar .filter-label[for="filter-announcement"],
.page-news #filter-rules:checked ~ .news-sidebar .filter-label[for="filter-rules"],
.page-news #filter-tutorial:checked ~ .news-sidebar .filter-label[for="filter-tutorial"],
.page-news #filter-version:checked ~ .news-sidebar .filter-label[for="filter-version"] {
  background: var(--glow-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
}

.page-news .news-sidebar__note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 2px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-news .news-sidebar__note p {
  margin: 0;
}

.page-news .news-stream {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-news .news-stream__header {
  padding-bottom: 14px;
  border-bottom: 3px solid var(--border-subtle);
  margin-bottom: 4px;
}

.page-news .news-stream__header h2 {
  font-family: var(--font-heading);
  font-size: var(--h2-size);
  color: var(--text-primary);
  margin: 0;
}

.page-news .news-stream__header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin: 6px 0 0;
}

.page-news .news-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--surface-alt);
  border: 3px solid var(--border-subtle);
  border-left: 6px solid var(--bright-cyan);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.22);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.page-news .news-card[data-category="rules"] {
  border-left-color: var(--gold);
}

.page-news .news-card[data-category="tutorial"] {
  border-left-color: var(--news-violet);
}

.page-news .news-card[data-category="version"] {
  border-left-color: var(--news-mint);
}

.page-news .news-card:hover {
  transform: translateY(-2px);
}

.page-news .news-card[data-category="announcement"]:hover {
  border-color: var(--bright-cyan);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.18), 10px 10px 0 rgba(0, 0, 0, 0.22);
}

.page-news .news-card[data-category="rules"]:hover {
  border-color: var(--gold);
  box-shadow: 0 0 24px rgba(240, 185, 11, 0.18), 10px 10px 0 rgba(0, 0, 0, 0.22);
}

.page-news .news-card[data-category="tutorial"]:hover {
  border-color: var(--news-violet);
  box-shadow: 0 0 24px rgba(154, 140, 255, 0.18), 10px 10px 0 rgba(0, 0, 0, 0.22);
}

.page-news .news-card[data-category="version"]:hover {
  border-color: var(--news-mint);
  box-shadow: 0 0 24px rgba(94, 224, 196, 0.18), 10px 10px 0 rgba(0, 0, 0, 0.22);
}

.page-news .news-card__content {
  min-width: 0;
}

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

.page-news .news-card__tag {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1.5px solid var(--bright-cyan);
  color: var(--bright-cyan);
  background: rgba(0, 229, 255, 0.07);
}

.page-news .news-card__tag--rules {
  border-color: var(--gold);
  color: var(--gold-light);
  background: rgba(240, 185, 11, 0.08);
}

.page-news .news-card__tag--tutorial {
  border-color: var(--news-violet);
  color: #beb4ff;
  background: rgba(154, 140, 255, 0.08);
}

.page-news .news-card__tag--version {
  border-color: var(--news-mint);
  color: #7cefc6;
  background: rgba(94, 224, 196, 0.08);
}

.page-news .news-card__time {
  color: var(--text-secondary);
  font-size: 0.84rem;
  letter-spacing: 0.05em;
}

.page-news .news-card__title {
  font-family: var(--news-serif);
  font-size: 1.45rem;
  line-height: 1.38;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  margin: 12px 0 8px;
}

.page-news .news-card__title a {
  color: inherit;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.page-news .news-card__title a:hover {
  color: var(--bright-cyan);
  border-bottom-color: var(--bright-cyan);
}

.page-news .news-card__excerpt {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
  margin: 0;
}

.page-news .news-card__details {
  margin-top: 12px;
  border-top: 2px solid var(--border-subtle);
  padding-top: 12px;
}

.page-news .news-card__details summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--bright-cyan);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.page-news .news-card__details summary::after {
  content: "+";
  font-size: 1.2rem;
  line-height: 1;
}

.page-news .news-card__details[open] summary {
  color: var(--gold-light);
}

.page-news .news-card__details[open] summary::after {
  content: "–";
}

.page-news .news-card__details summary span:last-child {
  display: none;
}

.page-news .news-card__details[open] summary span:first-child {
  display: none;
}

.page-news .news-card__details[open] summary span:last-child {
  display: inline;
}

.page-news .news-card__full {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  padding: 12px 0 2px;
}

.page-news .news-card__full p {
  margin: 0;
}

.page-news .news-card__cover {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 14px;
  border: 2px solid var(--border-subtle);
}

.page-news .news-card--with-cover .news-card__cover {
  order: -1;
}

.page-news #filter-announcement:checked ~ .news-stream .news-card:not([data-category="announcement"]),
.page-news #filter-rules:checked ~ .news-stream .news-card:not([data-category="rules"]),
.page-news #filter-tutorial:checked ~ .news-stream .news-card:not([data-category="tutorial"]),
.page-news #filter-version:checked ~ .news-stream .news-card:not([data-category="version"]) {
  display: none;
}

.page-news .topic-rules {
  position: relative;
  overflow: hidden;
  margin-top: 64px;
  background: linear-gradient(135deg, rgba(26, 27, 75, 0.95) 0%, rgba(18, 21, 43, 0.9) 55%, rgba(0, 229, 255, 0.14) 100%);
  border: 3px solid var(--border-subtle);
  border-radius: calc(var(--radius) + 8px);
  padding: 36px 28px;
  box-shadow: var(--shadow-hard);
}

.page-news .topic-rules::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -50px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.28) 0%, transparent 70%);
  pointer-events: none;
}

.page-news .topic-rules__shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-news .topic-rules__lead p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0 0 14px;
  max-width: 42ch;
}

.page-news .topic-rules__lead .btn {
  margin-top: 8px;
}

.page-news .topic-kicker {
  display: inline-block;
  background: rgba(240, 185, 11, 0.12);
  border: 1.5px solid var(--gold);
  color: var(--gold-light);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.page-news .topic-rules__lead h2,
.page-news .topic-billing__head h2 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  line-height: 1.3;
  color: var(--text-primary);
  margin: 0 0 16px;
}

.page-news .topic-rules__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news .topic-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 16px;
  border: 2px solid var(--border-subtle);
  border-radius: 16px;
  background: rgba(11, 14, 26, 0.55);
  text-decoration: none;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.page-news .topic-item:hover {
  border-color: var(--gold);
  box-shadow: 0 0 18px rgba(240, 185, 11, 0.16);
  transform: translateY(-2px);
}

.page-news .topic-item__num {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gold);
  min-width: 2ch;
  padding-top: 2px;
}

.page-news .topic-item__body h3 {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  color: var(--text-primary);
  margin: 0 0 6px;
}

.page-news .topic-item__body p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

.page-news .topic-billing {
  position: relative;
  overflow: hidden;
  margin-top: 64px;
  background: var(--surface-alt);
  border: 3px solid var(--border-subtle);
  border-radius: calc(var(--radius) + 8px);
  padding: 36px 28px;
}

.page-news .topic-billing::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 6px;
  background: var(--glow-gradient);
}

.page-news .topic-billing__head {
  max-width: 42ch;
}

.page-news .topic-billing__head p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0;
}

.page-news .billing-steps {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-news .billing-step {
  padding: 24px 18px;
  border: 2px solid var(--border-subtle);
  border-radius: 16px;
  background: var(--space-navy);
  position: relative;
}

.page-news .billing-step__mark {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1;
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  background-image: linear-gradient(135deg, var(--bright-cyan), var(--gold-light));
}

.page-news .billing-step h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin: 12px 0 6px;
}

.page-news .billing-step p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

.page-news .topic-billing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

@media (min-width: 768px) {
  .page-news .billing-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news .topic-rules__lead {
    padding-right: 24px;
  }
}

@media (min-width: 960px) {
  .page-news .news-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 48px;
  }

  .page-news .news-sidebar {
    flex: 0 0 300px;
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }

  .page-news .news-stream {
    flex: 1;
    min-width: 0;
    background-image: linear-gradient(180deg, rgba(0, 229, 255, 0.02) 0%, transparent 30%, rgba(26, 27, 75, 0.18) 65%, rgba(0, 229, 255, 0.03) 100%);
    background-size: 100% 220%;
    background-attachment: fixed;
  }

  .page-news .filter-label {
    flex: 1 1 100%;
  }

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

  .page-news .news-card--with-cover {
    display: grid;
    grid-template-columns: 1fr 280px;
    align-items: center;
    gap: 28px;
  }

  .page-news .news-card--with-cover .news-card__cover {
    order: initial;
    border-radius: 14px;
  }

  .page-news .topic-rules__shell {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
  }

  .page-news .topic-rules,
  .page-news .topic-billing {
    padding: 44px 40px;
  }
}