.page-news {
  --news-pad: 20px;
  --news-line-soft: rgba(201, 214, 226, 0.16);
  background: var(--base);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-news .news-layout {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 24px var(--news-pad) 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

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

.page-news .news-context {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .news-context a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-news .news-context a:hover,
.page-news .news-context a:focus-visible {
  border-bottom-color: var(--line-signal);
}

/* ---------- 头条 ---------- */
.page-news .news-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding: 8px 0 var(--block);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(100%, 520px);
  height: 200px;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: linear-gradient(to bottom left, #000, transparent 70%);
  mask-image: linear-gradient(to bottom left, #000, transparent 70%);
  pointer-events: none;
}

.page-news .news-hero__text {
  position: relative;
  padding-left: 16px;
}

.page-news .news-hero__text::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--signal), rgba(0, 229, 199, 0));
}

.page-news .news-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 7vw, 54px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 14px 0 18px;
  color: var(--paper);
}

.page-news .news-hero__lede {
  max-width: 34em;
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.86);
}

.page-news .news-hero__meta {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--diff);
}

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

/* 头条差异卡 */
.page-news .news-brief {
  position: relative;
  padding: 22px;
  background: var(--surface);
}

.page-news .news-brief__title {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--paper);
}

.page-news .news-brief__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .diffpairs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .diffpair {
  display: grid;
  gap: 6px;
  padding: 12px 14px;
  border-left: 3px solid var(--diff);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  background: rgba(7, 30, 51, 0.55);
}

.page-news .diffpair__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-news .diffpair__old,
.page-news .diffpair__new {
  display: block;
  font-size: 14px;
  line-height: 1.6;
}

.page-news .diffpair__old {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: rgba(138, 160, 180, 0.5);
}

.page-news .diffpair__new {
  color: var(--paper);
  border-left: 2px solid var(--signal);
  padding-left: 10px;
  margin-left: -1px;
}

.page-news .diffpair__ver {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  padding: 1px 6px;
  border-radius: var(--r-pill);
  background: rgba(201, 214, 226, 0.12);
  color: var(--muted);
}

.page-news .diffpair__new .diffpair__ver {
  background: rgba(0, 229, 199, 0.14);
  color: var(--signal);
}

/* ---------- 时间轴图 ---------- */
.page-news .news-timeline {
  margin: 0 0 var(--block);
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line-strong);
}

.page-news .news-timeline .figure__media img,
.page-news .news-logfigure .figure__media img,
.page-news .reminder-figure .figure__media img,
.page-news .diffcard__figure .figure__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 通用章节 ---------- */
.page-news .news-sec {
  padding: var(--block) 0;
  border-top: 1px solid var(--news-line-soft);
}

.page-news .news-sec .section__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 12px 0 14px;
}

.page-news .news-sec .section__lede {
  max-width: 46em;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 247, 250, 0.78);
}

/* ---------- 分类卡 ---------- */
.page-news .taglist {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-news .tagcard {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  border-radius: var(--r-card);
  border: 1px solid var(--line-strong);
  background: rgba(18, 58, 94, 0.55);
  transition: border-color 240ms ease, transform 240ms ease;
}

.page-news .tagcard:hover {
  border-color: var(--line-signal);
  transform: translateY(-2px);
}

.page-news .tagcard__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.8);
}

.page-news .tagcard__count {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-news .tagcard--iter { border-top: 2px solid var(--signal); }
.page-news .tagcard--adapt { border-top: 2px solid var(--diff); }
.page-news .tagcard--maint { border-top: 2px solid var(--muted); }
.page-news .tagcard--notice { border-top: 2px solid var(--mint); }

.page-news .tagpill {
  align-self: flex-start;
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  white-space: nowrap;
}

.page-news .tagpill--iter {
  color: var(--signal);
  background: rgba(0, 229, 199, 0.12);
  border: 1px solid var(--line-signal);
}

.page-news .tagpill--adapt {
  color: var(--diff);
  background: rgba(255, 122, 61, 0.14);
  border: 1px solid rgba(255, 122, 61, 0.4);
}

.page-news .tagpill--maint {
  color: var(--muted);
  background: rgba(138, 160, 180, 0.12);
  border: 1px solid var(--line-strong);
}

.page-news .tagpill--notice {
  color: var(--mint);
  background: rgba(124, 243, 228, 0.1);
  border: 1px solid rgba(124, 243, 228, 0.36);
}

/* ---------- 日志条目 ---------- */
.page-news .loglist {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  border-top: 1px solid var(--news-line-soft);
}

.page-news .logitem {
  border-bottom: 1px solid var(--news-line-soft);
}

.page-news .logitem__box > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-news .logitem__box > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--signal);
}

.page-news .logitem__box[open] > summary::after {
  content: "−";
}

.page-news .logitem__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--base);
  background: var(--signal);
  border-radius: 4px;
  padding: 2px 7px;
  letter-spacing: 0.04em;
}

.page-news .logitem__title {
  flex: 1 1 220px;
  min-width: 0;
  font-size: 16px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--paper);
  transition: color 200ms ease;
}

.page-news .logitem__box > summary:hover .logitem__title,
.page-news .logitem__box[open] > summary .logitem__title {
  color: var(--mint);
}

.page-news .logitem__time {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.page-news .logitem__body {
  padding: 0 0 20px 4px;
  border-left: 1px solid var(--line-signal);
  margin-left: 4px;
}

.page-news .logitem__body p {
  margin: 0 0 10px;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 247, 250, 0.8);
}

.page-news .logitem__body p:last-child {
  margin-bottom: 0;
}

.page-news .news-logfigure {
  margin: 36px 0 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-news .news-logfigure .figure__caption {
  padding: 12px 16px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(7, 30, 51, 0.6);
}

/* ---------- 差异摘要 ---------- */
.page-news .diffgrid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-news .diffcard {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px;
  background: var(--surface);
}

.page-news .diffcard__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.35;
  font-weight: 600;
  color: var(--paper);
}

.page-news .diffcard__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.8);
}

.page-news .diffcard__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid var(--line-signal);
  padding-bottom: 3px;
}

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

.page-news .diffcard--figure {
  background: rgba(18, 58, 94, 0.7);
}

.page-news .diffcard__figure {
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-news .diffcard__figure .figure__caption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 更新节奏 ---------- */
.page-news .cadence {
  margin-top: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-news .cadence__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-news .cadence__text {
  margin: 0 0 20px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 247, 250, 0.8);
}

.page-news .remindlist {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .remindlist__item {
  padding: 12px 16px;
  border-radius: var(--r-card);
  border: 1px solid var(--line-strong);
  background: rgba(7, 30, 51, 0.5);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 247, 250, 0.82);
}

.page-news .remindlist__key {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mint);
}

.page-news .cadence__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .cadence__side {
  display: grid;
  gap: 24px;
}

.page-news .ruler {
  position: relative;
  padding: 4px 0 4px 26px;
  border-left: 1px solid var(--line-strong);
}

.page-news .ruler__hint {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-news .ruler__node {
  position: relative;
  margin: 0;
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.page-news .ruler__node::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 13px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--base);
  border: 1px solid var(--line-strong);
}

.page-news .ruler__node--now {
  color: var(--signal);
}

.page-news .ruler__node--now::before {
  background: var(--signal);
  border-color: var(--signal);
  box-shadow: 0 0 0 4px rgba(0, 229, 199, 0.16);
}

.page-news .reminder-figure {
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-news .reminder-figure .figure__caption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 归档 ---------- */
.page-news .archive {
  margin-top: 32px;
  display: grid;
  gap: 14px;
}

.page-news .archive__group {
  border: 1px solid var(--line-strong);
  border-radius: var(--r-card);
  background: rgba(18, 58, 94, 0.45);
  overflow: hidden;
}

.page-news .archive__group[open] {
  border-color: var(--line-signal);
}

.page-news .archive__group > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .archive__ver {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--signal);
}

.page-news .archive__range {
  flex: 1 1 160px;
  min-width: 0;
  font-size: 13px;
  color: var(--muted);
}

.page-news .archive__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mint);
}

.page-news .archive__list {
  list-style: none;
  margin: 0;
  padding: 0 20px 18px;
  display: grid;
  gap: 10px;
}

.page-news .archive__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding-left: 14px;
  position: relative;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 247, 250, 0.82);
}

.page-news .archive__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--diff);
}

.page-news .archive__tag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  padding: 1px 9px;
  white-space: nowrap;
}

.page-news .archive__foot {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .archive__foot a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid var(--line-signal);
}

.page-news .archive__foot a:hover,
.page-news .archive__foot a:focus-visible {
  color: var(--signal);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-news .taglist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .news-layout {
    padding-left: 32px;
    padding-right: 32px;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: start;
  }

  .page-news .cadence {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 40px;
  }

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

@media (min-width: 1024px) {
  .page-news .news-layout {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 40px;
    padding-top: 32px;
  }

  .page-news .taglist {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-news .news-brief {
    padding: 26px;
  }
}

@media (min-width: 1280px) {
  .page-news .news-layout {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .tagcard {
    transition: border-color 240ms ease;
  }

  .page-news .tagcard:hover {
    transform: none;
  }
}

/* 说明：以上为主体 HTML 与页面专属 CSS，页面作用域为 .page-news。 */