.page-news {
  --news-panel-clip: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  position: relative;
  background: var(--bg-deep);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
}

.page-news__hero {
  position: relative;
  overflow: hidden;
  padding: 28px 20px 36px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(rgba(46, 64, 83, 0.22) 1px, transparent 1px) 0 0 / 26px 26px,
    radial-gradient(circle at 82% 18%, rgba(138, 43, 226, 0.36), transparent 46%),
    var(--bg-deep);
}

.page-news__hero::after {
  content: "";
  position: absolute;
  right: -36px;
  top: 14px;
  width: 190px;
  height: 190px;
  background: repeating-linear-gradient(-45deg, rgba(57, 255, 20, 0.10) 0 8px, transparent 8px 16px);
  clip-path: polygon(40% 0, 100% 0, 100% 60%, 60% 100%, 0 100%, 0 40%);
  pointer-events: none;
  z-index: 0;
}

.page-news__hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
}

.page-news .breadcrumbs {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.page-news .breadcrumbs a {
  color: var(--blue);
  text-decoration: none;
}

.page-news .breadcrumbs a:hover {
  color: var(--lime);
}

.page-news .breadcrumbs__sep {
  margin: 0 8px;
  color: var(--muted);
}

.page-news__eyebrow {
  margin-bottom: 8px;
}

.page-news__hero .page-news__eyebrow {
  color: var(--lime);
}

.page-news__title {
  margin: 0 0 14px;
  font-family: var(--font-headline);
  font-size: 1.75rem;
  line-height: 1.28;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.page-news__lead {
  max-width: 700px;
  margin: 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--muted);
}

.page-news__layout {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 20px 44px;
}

.page-news__rail {
  display: none;
}

.page-news__section {
  scroll-margin-top: 96px;
  padding: 8px 0 44px;
  border-bottom: 1px dashed var(--line);
}

.page-news__section:last-of-type {
  border-bottom: none;
}

.page-news .section-title {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.3;
}

.page-news__section-head {
  margin-bottom: 22px;
}

.page-news .eyebrow {
  margin: 0 0 6px;
  font-size: 0.8125rem;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.page-news__figure {
  margin: 0 0 26px;
  overflow: hidden;
  background: var(--bg-ocean);
  clip-path: var(--news-panel-clip);
}

.page-news__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news__figure--wide .page-news__img {
  aspect-ratio: 16 / 9;
}

.page-news__figure--normal .page-news__img {
  aspect-ratio: 3 / 2;
}

.page-news__figure--bookmark .page-news__img {
  aspect-ratio: 2 / 1;
}

.page-news__feed {
  position: relative;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
}

.page-news__feed::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent) 0%, var(--accent) 22%, var(--line) 60%, transparent 100%);
}

.page-news__feed-item {
  position: relative;
  margin: 0;
  padding: 0 0 30px;
}

.page-news__feed-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 14px;
  width: 14px;
  height: 14px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: var(--bg-deep);
  border: 3px solid var(--blue);
  box-shadow: 0 0 0 2px var(--bg-deep);
}

.page-news__feed-item--latest::before {
  border-color: var(--lime);
  box-shadow: 0 0 0 2px var(--bg-deep), 0 0 14px rgba(57, 255, 20, 0.55);
}

.page-news__feed-item:last-child {
  padding-bottom: 4px;
}

.page-news__item-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.page-news__tag {
  display: inline-block;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
}

.page-news__tag--version {
  color: var(--lime);
  border-color: rgba(57, 255, 20, 0.45);
}

.page-news__tag--event {
  color: var(--yellow);
  border-color: rgba(255, 215, 0, 0.45);
}

.page-news__tag--service {
  color: var(--blue);
  border-color: rgba(30, 144, 255, 0.45);
}

.page-news__tag--system {
  color: var(--accent);
  border-color: rgba(138, 43, 226, 0.55);
}

.page-news__item-time {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.page-news__item-title {
  margin: 0 0 4px;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ink);
}

.page-news__details {
  margin-top: 8px;
}

.page-news__details summary {
  display: inline-block;
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--blue);
  cursor: pointer;
  list-style: none;
}

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

.page-news__details summary::before {
  content: "+ ";
  color: var(--lime);
}

.page-news__details[open] summary::before {
  content: "− ";
}

.page-news__details p {
  margin: 8px 0 0;
  padding: 12px 16px;
  background: var(--bg-ocean);
  border-left: 2px solid var(--accent);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news__changelog {
  position: relative;
  padding-left: 22px;
}

.page-news__changelog::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--accent) 0 10px, transparent 10px 18px);
}

.page-news__version {
  position: relative;
  padding: 0 0 30px;
  background-image: repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.02) 0 6px, transparent 6px 12px);
}

.page-news__version::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 10px;
  width: 14px;
  height: 14px;
  border-radius: 2px;
  transform: rotate(45deg);
  background: var(--bg-deep);
  border: 2px solid var(--lime);
}

.page-news__version-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.page-news__version-badge {
  display: inline-block;
  padding: 4px 10px 4px 14px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--bg-deep);
  background: var(--lime);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.page-news__version-badge--lime {
  background: var(--lime);
  color: var(--bg-deep);
}

.page-news__version-badge--yellow {
  background: var(--yellow);
  color: var(--bg-deep);
}

.page-news__version-badge--blue {
  background: var(--blue);
  color: var(--bg-deep);
}

.page-news__version-badge--accent {
  background: var(--accent);
  color: var(--ink);
}

.page-news__version-title {
  margin: 0 0 6px;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ink);
}

.page-news__version-desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news__rule-alert {
  position: relative;
  margin: 0 0 24px;
  padding: 18px 18px 18px 20px;
  background:
    repeating-linear-gradient(-45deg, rgba(255, 215, 0, 0.08) 0 8px, transparent 8px 16px),
    var(--bg-ocean);
  border-left: 4px solid var(--yellow);
  clip-path: var(--news-panel-clip);
}

.page-news__rule-alert__title {
  margin: 0 0 6px;
  font-family: var(--font-headline);
  font-size: 1.125rem;
  font-weight: 900;
  color: var(--yellow);
}

.page-news__rule-alert p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-news__rule-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}

.page-news__rule-item:last-child {
  border-bottom: none;
}

.page-news__rule-item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news__steps {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-news__step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--line);
}

.page-news__step:last-child {
  border-bottom: none;
}

.page-news__step-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--lime);
  position: relative;
}

.page-news__step-num::after {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  margin-top: 6px;
  background: var(--accent);
}

.page-news__step-body h3 {
  margin: 0 0 6px;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--ink);
}

.page-news__step-body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news__bookmark-tip {
  margin: 0;
  padding: 14px 16px;
  background: var(--bg-ocean);
  border-left: 2px solid var(--lime);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news__related {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-news .btn {
  text-decoration: none;
}

.page-news__content {
  min-width: 0;
}

@media (min-width: 900px) {
  .page-news__hero {
    padding: 48px 28px 60px;
  }

  .page-news__title {
    font-size: 2.5rem;
    line-height: 1.2;
  }

  .page-news__lead {
    font-size: 1.125rem;
  }

  .page-news__layout {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 44px;
    padding: 52px 28px 72px;
  }

  .page-news__rail {
    display: block;
    position: sticky;
    top: 96px;
    align-self: start;
    padding: 20px 16px;
    background: var(--bg-ocean);
    clip-path: var(--news-panel-clip);
  }

  .page-news__rail-title {
    margin: 0 0 12px;
    padding-bottom: 10px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.1em;
    color: var(--muted);
    border-bottom: 1px dashed var(--line);
  }

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

  .page-news__rail-link {
    display: block;
    padding: 9px 12px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
  }

  .page-news__rail-link:hover,
  .page-news__rail-link.is-active {
    color: var(--ink);
    border-left-color: var(--lime);
    background: linear-gradient(90deg, rgba(57, 255, 20, 0.08), transparent);
  }

  .page-news__rail-signal {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px dashed var(--line);
  }

  .page-news__signal {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--lime);
  }

  .page-news__section {
    padding-bottom: 56px;
  }

  .page-news__feed-item {
    padding-bottom: 36px;
  }

  .page-news__version {
    padding-bottom: 36px;
  }
}