.page-news {
  --news-pad: 20px;
  background: var(--paper);
  color: var(--gray);
}

.page-news__crumb {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px 24px 0;
}

.page-news__intro {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 48px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: end;
}

.page-news__intro-copy {
  min-width: 0;
}

.page-news__title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 30px;
  line-height: 1.25;
  color: var(--ink);
  margin: 8px 0 16px;
  letter-spacing: -0.01em;
}

.page-news__lead {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.75;
  color: var(--gray);
  max-width: 720px;
  margin: 0 0 8px;
}

.page-news__extra {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
  margin: 0;
}

.page-news__extra a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news__intro-figure {
  background: var(--ink);
  color: var(--white);
  padding: 24px;
  border-left: 4px solid var(--gold);
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  overflow: hidden;
}

.page-news__intro-figure::after {
  content: "";
  position: absolute;
  right: -20px;
  top: -20px;
  width: 90px;
  height: 90px;
  border: 2px solid rgba(201, 160, 99, 0.35);
  transform: rotate(45deg);
}

.page-news__intro-num {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-news__intro-label {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
}

.page-news__intro-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sky);
}

.page-news__route {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-news__index {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 16px;
}

.page-news__index-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 12px;
}

.page-news__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}

.page-news__index-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-news__index-list a:hover,
.page-news__index-list a:focus-visible {
  color: var(--blue);
  border-bottom-color: var(--orange);
}

.page-news__index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
}

.page-news__feed {
  display: flex;
  flex-direction: column;
  gap: 72px;
  min-width: 0;
}

.page-news__section {
  padding-top: 36px;
}

.page-news__section .section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-bottom: 20px;
}

.page-news__section .section-index {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--orange);
  letter-spacing: 0.06em;
}

.page-news__section h2 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 24px;
  color: var(--ink);
  margin: 0;
}

.page-news__batch {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--blue);
  background: var(--sky);
  padding: 3px 8px;
  letter-spacing: 0.08em;
  border-radius: 2px;
}

.page-news__section-img {
  margin: 0 0 28px;
  border-radius: 6px;
  overflow: hidden;
}

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

.page-news__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.page-news__item {
  padding: 22px 0 22px 16px;
  border-bottom: 1px solid var(--sky);
  position: relative;
}

.page-news__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 3px;
  background: linear-gradient(180deg, var(--orange), var(--gold));
  opacity: 0.75;
}

.page-news__item--batch-divider {
  border-bottom: 1px dashed var(--orange);
}

.page-news__item--batch-divider::after {
  content: "";
  position: absolute;
  right: 12px;
  top: -1px;
  width: 44%;
  height: 1px;
  background: repeating-linear-gradient(
    45deg,
    var(--orange),
    var(--orange) 4px,
    transparent 4px,
    transparent 8px
  );
}

.page-news__item-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 8px;
}

.page-news__item-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.04em;
}

.page-news__item h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-news__item p {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0 0 6px;
}

.page-news__details {
  margin-top: 6px;
}

.page-news__details summary {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  cursor: pointer;
  border-bottom: 1px dashed var(--blue);
}

.page-news__details summary:hover,
.page-news__details summary:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-news__details[open] summary {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

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

.page-news__section--versions {
  background: var(--white);
  padding: 36px 20px 24px;
  border-radius: 6px;
  border-top: 3px solid var(--gold);
}

.page-news__versions {
  display: grid;
  gap: 16px;
}

.page-news__version-card {
  background: var(--white);
  border-left: 4px solid var(--gold);
  border-radius: 6px;
  padding: 20px;
}

.page-news__version-card:nth-child(1) {
  border-left-color: var(--orange);
}

.page-news__version-card:nth-child(2) {
  border-left-color: var(--green);
}

.page-news__version-card:nth-child(3) {
  border-left-color: var(--gold);
}

.page-news__version-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 700;
  color: var(--ink);
  margin-right: 12px;
  line-height: 1;
}

.page-news__version-card h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  margin: 12px 0 8px;
}

.page-news__version-card p {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
}

.page-news__section--season {
  background: var(--light-gold);
  padding: 36px 20px 24px;
  border-radius: 6px;
}

.page-news__grid2 {
  display: grid;
  gap: 20px;
}

.page-news__topic-card {
  background: var(--paper);
  padding: 20px;
  border-radius: 6px;
}

.page-news__topic-card h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  margin: 12px 0 8px;
}

.page-news__topic-card p {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
}

.page-news__observe-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-news__observe-list li {
  background: var(--white);
  border: 1px solid var(--sky);
  border-top: 3px solid var(--green);
  padding: 20px;
  border-radius: 6px;
}

.page-news__observe-list h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  margin: 12px 0 8px;
}

.page-news__observe-list p {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0;
}

.page-news__section--subscribe {
  background: var(--ink);
  padding: 36px 20px 40px;
  border-radius: 6px;
  color: var(--white);
}

.page-news__section--subscribe .section-head h2 {
  color: var(--white);
}

.page-news__section--subscribe .section-index {
  color: var(--gold);
}

.page-news__section--subscribe .page-news__batch {
  background: rgba(255, 255, 255, 0.12);
  color: var(--gold);
}

.page-news__subscribe-box {
  background: var(--white);
  border: 1px solid var(--sky);
  border-radius: 6px;
  padding: 20px;
  margin-top: 16px;
}

.page-news__subscribe-box h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
  margin: 0 0 10px;
}

.page-news__subscribe-box p {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0 0 14px;
}

.page-news__subscribe-box--dark {
  background: var(--white);
}

.page-news__subscribe-box--dark h3 {
  color: var(--ink);
}

.page-news__subscribe-box--dark p {
  color: var(--gray);
}

.page-news__back-top {
  display: inline-block;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--blue);
  text-decoration: none;
  border: 1px solid var(--sky);
  padding: 8px 16px;
  border-radius: 4px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  align-self: flex-start;
}

.page-news__back-top:hover,
.page-news__back-top:focus-visible {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}

.page-news .tag--blue {
  background: var(--blue);
  color: var(--white);
}

@media (min-width: 768px) {
  .page-news__intro {
    grid-template-columns: 1fr 260px;
    gap: 40px;
    padding-top: 56px;
  }

  .page-news__title {
    font-size: 38px;
  }

  .page-news__route {
    grid-template-columns: 230px 1fr;
    gap: 52px;
  }

  .page-news__index {
    position: sticky;
    top: 96px;
    align-self: start;
    border-bottom: none;
    border-left: 2px solid var(--ink);
    padding: 0 0 0 24px;
  }

  .page-news__index-list {
    flex-direction: column;
    gap: 6px;
  }

  .page-news__index-list a {
    font-size: 15px;
  }

  .page-news__versions {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news__grid2 {
    grid-template-columns: 1fr 1fr;
  }

  .page-news__observe-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news__section--versions,
  .page-news__section--season,
  .page-news__section--subscribe {
    padding-left: 28px;
    padding-right: 28px;
  }
}

@media (min-width: 1024px) {
  .page-news__intro {
    gap: 64px;
  }

  .page-news__feed {
    gap: 96px;
  }

  .page-news__section-img {
    margin-bottom: 32px;
  }
}