.page-news {
  --n-rail: 236px;
  --n-pad: clamp(18px, 2.2vw, 28px);
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 18px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.page-news .breadcrumb a {
  color: var(--orange-deep);
  text-decoration: none;
}
.page-news .breadcrumb a:hover {
  text-decoration: underline;
}
.page-news .breadcrumb__sep {
  color: var(--line-200);
}
.page-news .breadcrumb__current {
  color: var(--ink-700);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.page-news .ins-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.4vw, 44px) 0 clamp(40px, 5vw, 72px);
  border-bottom: 1px solid var(--line-200);
}
.page-news .ins-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: -140px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 26, 0.16), rgba(255, 107, 26, 0) 68%);
  pointer-events: none;
}
.page-news .ins-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}
@media (min-width: 960px) {
  .page-news .ins-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: start;
  }
}
.page-news .ins-hero__lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 4.6vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.page-news .ins-hero__lead .lead {
  margin: 18px 0 0;
  max-width: 62ch;
  color: var(--ink-700);
}
.page-news .ins-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.page-news .ins-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  border: 1px solid var(--line-200);
  border-radius: var(--r-full);
  background: var(--paper-0);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-700);
  font-variant-numeric: tabular-nums;
}
.page-news .ins-chip--solid {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
}

/* ---------- 首屏章节索引 ---------- */
.page-news .ins-index {
  border: 1px solid var(--line-200);
  border-radius: var(--r-m);
  background: var(--paper-0);
  box-shadow: var(--shadow-1);
  padding: clamp(18px, 2.2vw, 24px);
}
.page-news .ins-index__title {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.page-news .ins-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-news .ins-index__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 10px 10px 8px;
  border-radius: var(--r-s);
  text-decoration: none;
  color: var(--ink-700);
  font-size: 15px;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.page-news .ins-index__list a:hover,
.page-news .ins-index__list a:focus-visible {
  background: var(--paper-1);
  color: var(--orange-deep);
}
.page-news .ins-index__no {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 13px;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}
.page-news .ins-index__tx {
  min-width: 0;
}

/* ---------- 通用章节标题 ---------- */
.page-news .section {
  padding: clamp(52px, 6vw, 104px) 0;
}
.page-news .section--tight {
  padding: clamp(44px, 5vw, 84px) 0;
}
.page-news .section--paper {
  background: var(--paper-1);
}
.page-news .sec-head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(28px, 3.6vw, 52px);
}
@media (min-width: 780px) {
  .page-news .sec-head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: clamp(24px, 3vw, 48px);
    align-items: start;
  }
}
.page-news .sec-head__body {
  max-width: 68ch;
}
.page-news .sec-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(25px, 3.2vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.page-news .sec-head .lead {
  margin: 14px 0 0;
  color: var(--ink-700);
}
.page-news .chapter__num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(52px, 8vw, 104px);
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--line-200);
  font-variant-numeric: tabular-nums;
  user-select: none;
}
.page-news .chapter__num--solid {
  -webkit-text-stroke: 0;
  color: var(--orange);
}

/* ---------- 第3版变更总览 ---------- */
.page-news .change-grid {
  display: grid;
  gap: 18px;
}
@media (min-width: 860px) {
  .page-news .change-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}
.page-news .change-card {
  padding: var(--n-pad);
  border-radius: var(--r-m);
}
.page-news .change-card__flag {
  margin: 0 0 16px;
  display: inline-block;
  padding: 5px 13px;
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.page-news .change-card__flag--orange {
  background: rgba(255, 107, 26, 0.14);
  color: var(--orange-deep);
}
.page-news .change-card__flag--green {
  background: rgba(31, 157, 107, 0.14);
  color: var(--green-deep);
}

.page-news .tick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}
.page-news .tick-list li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-700);
}
.page-news .tick-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
}
.page-news .tick-list--green li::before {
  background: var(--green);
}

.page-news .note-line {
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--orange);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* ---------- 条目流 ---------- */
.page-news .feed {
  display: grid;
  gap: clamp(28px, 3.6vw, 48px);
}
@media (min-width: 1000px) {
  .page-news .feed {
    grid-template-columns: var(--n-rail) minmax(0, 1fr);
    align-items: start;
  }
  .page-news .feed__rail {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }
}
.page-news .feed__rail {
  display: grid;
  gap: 26px;
  align-content: start;
}
.page-news .feed__rail-title {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.page-news .feed__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-news .feed__tags .tag {
  cursor: pointer;
}
.page-news .feed__tags .tag[aria-pressed="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
  font-weight: 700;
}

.page-news .scale {
  list-style: none;
  margin: 0;
  padding: 0 0 0 4px;
  display: grid;
  gap: 4px;
  border-left: 1px solid var(--line-200);
}
.page-news .scale__item {
  position: relative;
  padding: 7px 0 7px 20px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--muted);
}
.page-news .scale__item .scale__dot {
  position: absolute;
  left: -5.5px;
  top: 15px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper-0);
  border: 2px solid var(--line-200);
}
.page-news .scale__item--done .scale__dot {
  border-color: var(--gold);
  background: var(--gold);
}
.page-news .scale__item--live {
  color: var(--ink-900);
  font-weight: 700;
}
.page-news .scale__item--live .scale__dot {
  border-color: var(--orange);
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.18);
}

.page-news .feed__banner {
  margin: 0 0 clamp(24px, 3vw, 36px);
  border-radius: var(--r-m);
}
.page-news .feed__banner .media__caption {
  margin-top: 10px;
}

.page-news .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
}
.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--orange) 48%, var(--green) 100%);
  opacity: 0.55;
}
.page-news .tl-item {
  position: relative;
  margin-bottom: 16px;
}
.page-news .tl-item:last-child {
  margin-bottom: 0;
}
.page-news .tl-node {
  position: absolute;
  left: -30px;
  top: 24px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper-0);
  border: 2px solid var(--orange);
  z-index: 1;
}
.page-news .tl-item--major .tl-node {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.16);
}
.page-news .tl-item[data-open] .tl-node {
  background: var(--gold);
  border-color: var(--gold);
}

.page-news .tl-card {
  border: 1px solid var(--line-200);
  border-radius: var(--r-m);
  background: var(--paper-0);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition: border-color var(--t-fast) var(--ease), transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}
.page-news .tl-card:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}
.page-news .tl-head {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "when star"
    "title star"
    "tags star";
  gap: 8px 14px;
  align-items: start;
  padding: clamp(16px, 2vw, 22px);
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}
.page-news .tl-head:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}
.page-news .tl-when {
  grid-area: when;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--orange-deep);
  font-variant-numeric: tabular-nums;
}
.page-news .tl-title {
  grid-area: title;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}
.page-news .tl-tags {
  grid-area: tags;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-news .tl-head .accordion__star {
  grid-area: star;
  align-self: start;
  margin-top: 4px;
}
.page-news .tl-panel {
  overflow: hidden;
}
.page-news .tl-panel > div {
  padding: 0 clamp(16px, 2vw, 22px) clamp(18px, 2vw, 22px);
  border-top: 1px solid var(--line-200);
  margin-top: 2px;
  padding-top: 16px;
}
.page-news .tl-panel p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-700);
}
.page-news .tl-panel p:last-child {
  margin-bottom: 0;
}
.page-news .tl-figure {
  margin: 14px clamp(16px, 2vw, 22px) 0;
  border-radius: var(--r-s);
}

/* ---------- 版本沿革 ---------- */
.page-news .versions {
  display: grid;
  gap: clamp(28px, 3.6vw, 48px);
}
@media (min-width: 980px) {
  .page-news .versions {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
  }
}
.page-news .versions__figure {
  margin: 0;
  border-radius: var(--r-m);
}
@media (min-width: 980px) {
  .page-news .versions__figure {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }
}
.page-news .versions__list {
  display: grid;
  gap: 14px;
}
.page-news .ver {
  border: 1px solid var(--line-200);
  border-radius: var(--r-m);
  background: var(--paper-0);
  box-shadow: var(--shadow-1);
  transition: border-color var(--t-fast) var(--ease);
}
.page-news .ver:hover {
  border-color: var(--orange);
}
.page-news .ver--live {
  border-color: rgba(255, 107, 26, 0.5);
}
.page-news .ver__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 2vw, 22px);
  padding: clamp(16px, 2vw, 22px);
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}
.page-news .ver__trigger:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}
.page-news .ver__num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--orange);
  font-variant-numeric: tabular-nums;
}
.page-news .ver--live .ver__num {
  -webkit-text-stroke: 0;
  color: var(--orange);
}
.page-news .ver[data-open] .ver__num {
  -webkit-text-stroke: 0;
  color: var(--orange);
}
.page-news .ver__head {
  display: grid;
  gap: 5px;
  min-width: 0;
}
.page-news .ver__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.35;
  color: var(--ink-900);
}
.page-news .ver__when {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.page-news .ver__panel {
  overflow: hidden;
}
.page-news .ver__panel > div {
  padding: 4px clamp(16px, 2vw, 22px) clamp(18px, 2vw, 24px);
}
.page-news .ver__goal {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-left: 2px solid var(--green);
  background: rgba(31, 157, 107, 0.07);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-700);
}
.page-news .ver__feel {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-700);
  font-weight: 600;
}

/* ---------- 帮助文档重写 ---------- */
.page-news .docs {
  display: grid;
  gap: clamp(26px, 3.4vw, 48px);
  align-items: start;
}
@media (min-width: 900px) {
  .page-news .docs {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}
.page-news .docs__body p {
  margin: 0 0 16px;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ink-700);
  max-width: 60ch;
}
.page-news .docs__body p:last-child {
  margin-bottom: 0;
}
.page-news .docs__figure {
  margin: 0;
  border-radius: var(--r-m);
}
.page-news .docs-progress {
  list-style: none;
  margin: clamp(28px, 3.4vw, 46px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-200);
}
.page-news .docs-progress__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line-200);
  font-size: 15.5px;
  color: var(--ink-700);
}
.page-news .docs-progress__mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--line-200);
  background: var(--paper-0);
}
.page-news .docs-progress__row--done .docs-progress__mark {
  background: var(--green);
  border-color: var(--green);
}
.page-news .docs-progress__row--doing .docs-progress__mark {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.16);
}
.page-news .docs-progress__name {
  min-width: 0;
  font-weight: 600;
  color: var(--ink-900);
}
.page-news .docs-progress__state {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-align: right;
}
.page-news .docs-progress__row--done .docs-progress__state {
  color: var(--green-deep);
}
.page-news .docs-progress__row--doing .docs-progress__state {
  color: var(--orange-deep);
}

/* ---------- 变更说明深色区 ---------- */
.page-news .ins-docs {
  background: linear-gradient(158deg, var(--ink-900) 0%, #1A1D24 100%);
  color: var(--paper-0);
  position: relative;
  overflow: hidden;
}
.page-news .ins-docs::before {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -160px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 1px dashed rgba(245, 183, 49, 0.28);
  pointer-events: none;
}
.page-news .ins-docs .wrap {
  position: relative;
  z-index: 1;
}
.page-news .ins-docs .chapter__num {
  -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.22);
  color: transparent;
}
.page-news .ins-docs .chapter__num--solid {
  -webkit-text-stroke: 0;
  color: var(--orange);
}
.page-news .ins-docs .sec-head h2 {
  color: var(--paper-0);
}
.page-news .ins-docs .sec-head .lead {
  color: rgba(251, 250, 247, 0.76);
}

.page-news .notes {
  display: grid;
  gap: 12px;
}
.page-news .notes__item {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, 0.04);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.page-news .notes__item:hover {
  border-color: var(--orange);
  background: rgba(255, 107, 26, 0.08);
}
.page-news .notes__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 22px);
  padding: clamp(15px, 1.9vw, 22px);
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}
.page-news .notes__trigger:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}
.page-news .notes__ver {
  display: inline-flex;
  align-items: center;
  padding: 6px 13px;
  border-radius: var(--r-full);
  background: var(--gold);
  color: var(--ink-900);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.page-news .notes__label {
  min-width: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper-0);
}
.page-news .notes__item[data-open] .notes__ver {
  background: var(--orange);
}
.page-news .notes__panel {
  overflow: hidden;
}
.page-news .notes__panel > div {
  padding: 2px clamp(15px, 1.9vw, 22px) clamp(18px, 2vw, 24px);
}
.page-news .notes__panel p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 250, 247, 0.8);
}
.page-news .notes__panel p:last-child {
  margin-bottom: 0;
}
.page-news .notes__hint {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--orange);
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(251, 250, 247, 0.72);
}

/* ---------- 反馈 ---------- */
.page-news .fb {
  display: grid;
  gap: 18px;
}
@media (min-width: 880px) {
  .page-news .fb {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
    align-items: stretch;
  }
}
.page-news .fb__card {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: var(--n-pad);
  border-radius: var(--r-m);
}
.page-news .fb__card p {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-700);
}
.page-news .card--ink.fb__card p {
  color: rgba(251, 250, 247, 0.82);
}
.page-news .fb__kicker {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--orange-deep);
}
.page-news .fb__kicker--light {
  color: var(--gold);
}
.page-news .fb__card .btn {
  justify-self: start;
  margin-top: 4px;
}
.page-news .fb__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}
.page-news .fb__note a {
  color: var(--orange-deep);
  font-weight: 600;
}

/* ---------- 媒体通用收束 ---------- */
.page-news .media img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: inherit;
  object-fit: cover;
}
.page-news .feed__banner img {
  aspect-ratio: 8 / 3;
}
.page-news .versions__figure img {
  aspect-ratio: 4 / 3;
}
.page-news .docs__figure img {
  aspect-ratio: 4 / 3;
}
.page-news .tl-figure img {
  aspect-ratio: 4 / 3;
}
.page-news .media__caption {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 560px) {
  .page-news .timeline {
    padding-left: 22px;
  }
  .page-news .tl-node {
    left: -22px;
    width: 13px;
    height: 13px;
    top: 22px;
  }
  .page-news .timeline::before {
    left: 6px;
  }
  .page-news .tl-head {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "when"
      "title"
      "tags";
  }
  .page-news .tl-head .accordion__star {
    position: absolute;
    right: 16px;
    top: 16px;
  }
  .page-news .tl-card {
    position: relative;
  }
  .page-news .docs-progress__row {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: 4px;
  }
  .page-news .docs-progress__state {
    grid-column: 2;
    text-align: left;
  }
  .page-news .ins-chip {
    font-size: 12px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .tl-card,
  .page-news .ver,
  .page-news .notes__item {
    transition: none;
  }
  .page-news .tl-card:hover {
    transform: none;
  }
}
</main>