.page-news {
  --news-rail-w: 12.5rem;
  --news-gap: clamp(1.5rem, 4vw, 3.25rem);
  display: block;
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

/* ---------- 报头 ---------- */
.page-news .news-masthead {
  position: relative;
  overflow: hidden;
  padding: clamp(1.75rem, 6vw, 4rem) 0 clamp(1.5rem, 4vw, 2.5rem);
  background: var(--paper);
}

.page-news .masthead-light {
  position: absolute;
  top: -30%;
  right: -14%;
  width: 82%;
  height: 172%;
  background: linear-gradient(100deg, rgba(240, 194, 100, 0.30), rgba(240, 194, 100, 0.06) 46%, rgba(200, 138, 40, 0) 74%);
  transform: skewX(-14deg);
  pointer-events: none;
  opacity: 0;
  animation: news-doorlight 620ms var(--ease) 60ms forwards;
}

@keyframes news-doorlight {
  from { opacity: 0; transform: skewX(-14deg) translateX(-10px); }
  to   { opacity: 0.92; transform: skewX(-14deg) translateX(0); }
}

.page-news .masthead-inner {
  position: relative;
  z-index: 1;
}

.page-news .masthead-kicker {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 1.15rem 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  color: var(--cinnabar);
}

.page-news .masthead-kicker .num {
  font-size: 0.86rem;
  color: var(--cinnabar);
}

.page-news .news-title {
  margin: 0;
  max-width: 15em;
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(1.9rem, 6.2vw, 3.9rem);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-news .news-lede {
  max-width: 44rem;
  margin: 1.15rem 0 0;
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-news .masthead-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.page-news .masthead-meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
}

.page-news .masthead-meta .num {
  font-size: 1.15rem;
  color: var(--cinnabar);
}

/* ---------- 主体门框栅格 ---------- */
.page-news .news-layout {
  display: grid;
  gap: var(--news-gap);
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

@media (min-width: 960px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 侧栏 ---------- */
.page-news .news-rail {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 0.75rem 0;
}

@media (min-width: 960px) {
  .page-news .news-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.75rem);
    border-top: none;
    border-bottom: none;
    border-left: 2px solid var(--rule);
    padding: 0 0 0 1rem;
  }
}

.page-news .news-rail .rail-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
}

.page-news .news-rail .rail-list {
  display: grid;
  gap: 0.2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (max-width: 959px) {
  .page-news .news-rail .rail-list {
    grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
    gap: 0.35rem;
  }
}

.page-news .news-rail .rail-link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.35rem 0.15rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--fast) var(--ease);
}

.page-news .news-rail .rail-link .num {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--rule);
  transition: color var(--fast) var(--ease);
}

.page-news .news-rail .rail-link:hover {
  color: var(--cinnabar);
}

.page-news .news-rail .rail-link:hover .num {
  color: var(--cinnabar);
}

.page-news .news-rail .rail-link[aria-current="true"] {
  color: var(--cinnabar);
  font-weight: 600;
  box-shadow: inset 2px 0 0 var(--cinnabar);
  padding-left: 0.6rem;
}

.page-news .news-rail .rail-link[aria-current="true"] .num {
  color: var(--cinnabar);
}

.page-news .news-rail .rail-link:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-news .rail-note {
  margin-top: 1.15rem;
  padding: 0.85rem 0.9rem;
  background: var(--paper-edge);
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-news .rail-note-title {
  margin: 0 0 0.25rem;
  font-weight: 600;
  color: var(--ink);
}

.page-news .rail-note a {
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* ---------- 章节 ---------- */
.page-news .news-section {
  padding: clamp(1.75rem, 4.5vw, 2.75rem) 0 clamp(2rem, 5vw, 3.25rem);
  border-top: 1px solid var(--rule);
}

.page-news .news-section:first-child {
  border-top: none;
  padding-top: 0;
}

.page-news .news-section .section-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--cinnabar);
}

.page-news .news-section .section-title {
  margin: 0.3rem 0 0.7rem;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.3rem, 3.4vw, 1.95rem);
  line-height: 1.32;
  color: var(--ink);
}

.page-news .news-section .section-lede {
  max-width: 46rem;
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------- 图 ---------- */
.page-news .figure {
  margin: 0;
}

.page-news .figure-frame {
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--paper-edge);
}

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

.page-news .figure-cap {
  margin: 0.6rem 0 0;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

.page-news .matrix-figure,
.page-news .mobile-figure,
.page-news .columns-figure {
  margin-top: 1.6rem;
}

/* ---------- 三步 ---------- */
.page-news .steps {
  display: grid;
  gap: 1rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 720px) {
  .page-news .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.4rem;
  }
}

.page-news .step {
  position: relative;
  padding: 1.15rem 1.15rem 1.25rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: 6px 6px 0 rgba(232, 225, 211, 0.9);
}

.page-news .step-num {
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--cinnabar);
}

.page-news .step-title {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.page-news .step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 对照索引表 ---------- */
.page-news .vtable {
  margin-top: 1.6rem;
  border: 1px solid var(--rule);
  background: var(--paper);
}

.page-news .vtable-head,
.page-news .vrow {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1.15fr) minmax(0, 1fr) minmax(0, 1fr) 3.4rem;
}

.page-news .vtable-head {
  background: var(--paper-edge);
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-news .vtable-head span {
  padding: 0.6rem 0.75rem;
}

.page-news .vrow {
  border-bottom: 1px solid var(--rule);
  transition: background var(--fast) var(--ease);
}

.page-news .vrow:hover {
  background: rgba(180, 69, 46, 0.035);
}

.page-news .vrow:target {
  background: rgba(180, 69, 46, 0.05);
}

.page-news .vrow:target .vcell--ver {
  box-shadow: inset 3px 0 0 var(--cinnabar);
}

.page-news .vcell {
  min-width: 0;
  padding: 0.9rem 0.75rem;
  border-left: 1px solid var(--rule);
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-news .vcell:first-child {
  border-left: none;
}

.page-news .vcell--ver {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.page-news .vcell--ver .vnum {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--cinnabar);
}

.page-news .vcell--ver em {
  font-style: normal;
  font-size: 0.76rem;
  color: var(--ink-soft);
}

.page-news .vcell--act {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding-top: 1rem;
}

.page-news .v-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.9rem;
  height: 1.9rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  cursor: pointer;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-news .v-toggle::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform var(--fast) var(--ease);
}

.page-news .v-toggle:hover {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}

.page-news .v-toggle[aria-expanded="true"] {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
  background: rgba(180, 69, 46, 0.06);
}

.page-news .v-toggle[aria-expanded="true"]::before {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-news .v-toggle:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-news .v-toggle-text {
  display: none;
  margin-left: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.76rem;
}

.page-news .vpanel {
  display: none;
  padding: 0.95rem 1.05rem 1.15rem;
  background: var(--paper-edge);
  border-bottom: 1px solid var(--rule);
}

.page-news .vpanel:not([hidden]),
.page-news .vpanel.is-open {
  display: block;
}

.page-news .vpanel p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-news .vpanel-list {
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
}

.page-news .vpanel-list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--ink);
}

.page-news .vpanel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.42rem;
  height: 1px;
  background: var(--celadon);
}

@media (max-width: 767px) {
  .page-news .vtable-head {
    display: none;
  }

  .page-news .vrow {
    grid-template-columns: minmax(0, 1fr);
    padding: 0.9rem 0 1rem;
  }

  .page-news .vrow:target .vcell--ver {
    box-shadow: none;
  }

  .page-news .vrow:target {
    box-shadow: inset 3px 0 0 var(--cinnabar);
  }

  .page-news .vcell {
    border-left: none;
    padding: 0.3rem 0.95rem;
  }

  .page-news .vcell--ver {
    flex-direction: row;
    align-items: baseline;
    gap: 0.55rem;
    padding-top: 0;
    padding-bottom: 0.55rem;
  }

  .page-news .vcell--fn::before { content: "功能差异 · "; }
  .page-news .vcell--path::before { content: "路径变化 · "; }
  .page-news .vcell--mob::before { content: "移动端适配 · "; }

  .page-news .vcell--fn::before,
  .page-news .vcell--path::before,
  .page-news .vcell--mob::before {
    color: var(--cinnabar);
    font-size: 0.75rem;
    letter-spacing: 0.06em;
  }

  .page-news .vcell--act {
    justify-content: flex-start;
    padding-left: 0.95rem;
    padding-top: 0.55rem;
  }

  .page-news .v-toggle {
    width: auto;
    height: 2rem;
    padding: 0 0.7rem;
  }

  .page-news .v-toggle-text {
    display: inline;
  }
}

/* ---------- 移动端更新 ---------- */
.page-news .mob-groups {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.7rem;
}

@media (min-width: 900px) {
  .page-news .mob-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.6rem 2.25rem;
  }
}

.page-news .mob-group {
  padding: 1.05rem 1.1rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--rule);
}

.page-news .mob-group:nth-child(odd) {
  border-top-color: var(--cinnabar);
}

.page-news .mob-group:nth-child(even) {
  border-top-color: var(--celadon);
}

.page-news .mob-group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}

.page-news .mob-group-head .label {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.page-news .mob-count {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-news .mob-list {
  margin: 0;
  padding: 0 0 0 1.15rem;
  list-style: none;
  border-left: 1px solid var(--rule);
}

.page-news .mob-item {
  position: relative;
  padding-bottom: 1.1rem;
}

.page-news .mob-item:last-child {
  padding-bottom: 0;
}

.page-news .mob-item::before {
  content: "";
  position: absolute;
  left: -1.15rem;
  top: 0.5rem;
  width: 0.55rem;
  height: 0.55rem;
  transform: translateX(-50%);
  background: var(--paper);
  border: 1px solid var(--cinnabar);
  border-radius: 50%;
  box-sizing: border-box;
}

.page-news .mob-group:nth-child(even) .mob-item::before {
  border-color: var(--celadon);
}

.page-news .mob-when {
  margin: 0 0 0.18rem;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.1em;
  color: var(--celadon);
}

.page-news .mob-title {
  margin: 0 0 0.28rem;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.page-news .mob-desc {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 专栏 ---------- */
.page-news .col-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.7rem;
}

@media (min-width: 640px) {
  .page-news .col-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }
}

.page-news .col-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.1rem 1.1rem 1.05rem;
  background: var(--paper-edge);
  border-top: 2px solid var(--cinnabar);
}

.page-news .col-card--version { border-top-color: var(--cinnabar); }
.page-news .col-card--entry  { border-top-color: var(--celadon); }
.page-news .col-card--mobile { border-top-color: var(--amber); }
.page-news .col-card--scope  { border-top-color: var(--indigo); }

.page-news .col-num {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-news .col-num .num {
  font-size: 0.9rem;
  color: var(--cinnabar);
}

.page-news .col-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--ink);
}

.page-news .col-text {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.82;
  color: var(--ink-soft);
}

.page-news .col-link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 0.6rem;
  font-size: 0.84rem;
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--fast) var(--ease);
}

.page-news .col-link:hover {
  color: var(--ink);
}

.page-news .col-link:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 3px;
}

/* ---------- 回看 ---------- */
.page-news .news-split {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.7rem;
}

@media (min-width: 820px) {
  .page-news .news-split {
    grid-template-columns: minmax(0, 1fr) 14rem;
    gap: 2.25rem;
    align-items: start;
  }
}

.page-news .revisit-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.page-news .revisit-item {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.92rem;
  line-height: 1.88;
  color: var(--ink-soft);
}

.page-news .revisit-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 0.9rem;
  height: 1px;
  background: var(--cinnabar);
}

.page-news .revisit-item a {
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-news .revisit-item a:hover {
  color: var(--ink);
}

.page-news .revisit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

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

.page-news .split-aside .figure-frame {
  border-color: var(--rule);
}

@media (min-width: 820px) {
  .page-news .split-aside .figure-frame img {
    max-height: 26rem;
  }
}