.page-news {
  --news-cut: 16px;
  --news-line: 1px solid var(--trench);
  padding-bottom: 96px;
  color: var(--text-on-dark);
}

.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-top: 22px;
  font-size: 13px;
  color: var(--mist);
}

.page-news .breadcrumb .mono {
  color: var(--trench);
}

.page-news .breadcrumb__link {
  color: var(--data);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-news .breadcrumb__link:hover,
.page-news .breadcrumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 报头 */
.page-news .news-head {
  position: relative;
  margin: 22px 0 56px;
  padding: 26px 0 32px;
  border-top: 1px solid var(--trench);
  border-bottom: 1px solid var(--trench);
}

.page-news .news-head::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--trench);
}

.page-news .news-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 18px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-news .news-head__title {
  margin: 0 0 18px;
  max-width: 22ch;
  font-size: clamp(30px, 6.6vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-news .news-head__lead {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--data);
}

.page-news .news-head__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-head__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--mist);
}

.page-news .news-head__facts .mono {
  font-size: 22px;
  font-weight: 600;
  color: var(--cyan);
}

/* 本期目录 */
.page-news .issue {
  margin-bottom: 64px;
  padding: 24px 20px;
  border: var(--news-line);
  background: var(--dive);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--news-cut)), calc(100% - var(--news-cut)) 100%, 0 100%);
}

.page-news .issue__inner {
  display: grid;
  gap: 26px;
}

.page-news .issue__title {
  margin: 14px 0 12px;
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -.005em;
  color: var(--paper);
}

.page-news .issue__byline {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .issue__notes {
  display: grid;
  margin: 22px 0 26px;
  padding: 0;
  list-style: none;
}

.page-news .issue__notes li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--trench);
  font-size: 15px;
  line-height: 1.6;
  color: var(--data);
}

.page-news .issue__notes .mono {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

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

.page-news .issue__media img,
.page-news .note-band__media img,
.page-news .logbook__media img,
.page-news .bulletin__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--trench);
  object-fit: cover;
}

/* 条目流 */
.page-news .feed {
  margin-bottom: 72px;
}

.page-news .feed__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 20px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--trench);
}

.page-news .feed__hint {
  margin: 0;
  font-size: 13px;
  color: var(--mist);
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.page-news .filter-btn {
  padding: 7px 15px;
  font: inherit;
  font-size: 14px;
  line-height: 1.2;
  color: var(--data);
  background: transparent;
  border: 1px solid var(--trench);
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-news .filter-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-news .filter-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--abyss);
}

.page-news .feed__list {
  display: grid;
}

.page-news .feed__item {
  display: grid;
  gap: 8px;
  padding: 18px 2px;
  border-bottom: 1px solid var(--trench);
  transition: transform .18s var(--ease);
}

.page-news .feed__item:hover {
  transform: translateX(4px);
}

.page-news .feed__num {
  padding-top: 2px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

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

.page-news .feed__tag {
  display: inline-block;
  padding: 5px 10px;
  font-size: 11px;
  line-height: 1;
  letter-spacing: .08em;
  color: var(--abyss);
  background: var(--cyan);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
}

.page-news .feed__tag--preview {
  background: var(--cyan-deep);
  color: var(--abyss);
}

.page-news .feed__tag--log {
  background: var(--data);
  color: var(--abyss);
}

.page-news .feed__tag--notice {
  background: var(--coral);
  color: var(--abyss);
}

.page-news .feed__time {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-news .feed__title {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .feed__item:hover .feed__title,
.page-news .feed__item:focus-within .feed__title {
  text-decoration: underline;
  text-decoration-color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 5px;
}

.page-news .feed__sum {
  margin: 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-news .feed__more {
  margin-top: 8px;
}

.page-news .feed__more summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
}

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

.page-news .feed__more summary::before {
  content: "+";
  font-family: var(--font-mono);
}

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

.page-news .feed__more summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .feed__more p {
  margin: 12px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan-deep);
  font-size: 14px;
  line-height: 1.72;
  color: var(--data);
}

/* 旁注说明带 */
.page-news .note-band {
  display: grid;
  gap: 22px;
  margin: 0 0 72px;
  padding: 22px;
  border: 1px solid var(--trench);
  background: var(--dive);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-news .note-band__media {
  margin: 0;
}

.page-news .note-band__text p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--data);
}

.page-news .note-band__text p:last-child {
  margin-bottom: 0;
  color: var(--mist);
}

/* 版本日志 */
.page-news .logbook {
  margin-bottom: 72px;
}

.page-news .logbook__head {
  margin-bottom: 24px;
}

.page-news .logbook__body {
  display: grid;
  gap: 28px;
}

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

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

.page-news .logline__item {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--trench);
}

.page-news .logline__item:last-child {
  padding-bottom: 4px;
}

.page-news .logline__item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -5px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-news .logline__stage {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-news .logline__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .logline__text {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

/* 编辑部通告 */
.page-news .bulletin {
  display: grid;
  gap: 26px;
  margin-bottom: 72px;
  padding-top: 32px;
  border-top: 1px solid var(--trench);
}

.page-news .bulletin__list {
  display: grid;
  gap: 18px;
  margin: 18px 0 24px;
  padding: 0;
  list-style: none;
}

.page-news .bulletin__list li {
  padding-left: 14px;
  border-left: 2px solid var(--trench);
  transition: border-color .18s var(--ease);
}

.page-news .bulletin__list li:hover {
  border-left-color: var(--cyan);
}

.page-news .bulletin__list h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-news .bulletin__list p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

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

/* 归档 */
.page-news .archive {
  padding-top: 30px;
  border-top: 1px solid var(--trench);
}

.page-news .archive__grid {
  display: grid;
  gap: 16px;
  margin: 22px 0 26px;
}

.page-news .archive__col {
  padding: 20px 18px;
  border: 1px solid var(--trench);
  background: var(--dive);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-news .archive__col h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-news .archive__col p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-news .archive__cadence {
  margin: 0 0 26px;
  max-width: 74ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--data);
}

.page-news .archive__cadence a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-deep);
}

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

.page-news .archive__back {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--trench);
  padding-bottom: 3px;
}

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

@media (min-width: 640px) {
  .page-news .issue__notes li {
    grid-template-columns: 78px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-news .feed__item {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 28px;
  }

  .page-news .feed__num {
    text-align: right;
  }

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

@media (min-width: 900px) {
  .page-news .issue {
    padding: 40px 36px;
  }

  .page-news .issue__inner {
    grid-template-columns: 1.1fr .9fr;
    gap: 44px;
    align-items: start;
  }

  .page-news .note-band {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 32px;
    align-items: center;
    padding: 30px;
  }

  .page-news .logbook__body {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 44px;
    align-items: start;
  }

  .page-news .bulletin {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 48px;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .feed__item,
  .page-news .filter-btn,
  .page-news .bulletin__list li {
    transition: none;
  }

  .page-news .feed__item:hover {
    transform: none;
  }
}
<<<END>>>