.page-news {
  --chg-rail: 96px;
  --chg-version: var(--gold);
  --chg-index: var(--celadon);
  --chg-adapt: var(--gold-soft);
  --chg-faq: #D4604F;
  --chg-hair: rgba(42, 64, 85, 0.9);
  background: var(--ink);
  color: var(--body);
  font-family: var(--sans);
  overflow-x: hidden;
}

.page-news .section-title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(25px, 3.4vw, 36px);
  line-height: 1.3;
  letter-spacing: 0.06em;
  color: var(--paper);
  margin: 12px 0 0;
}

.page-news .eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-news .eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: currentColor;
  flex: none;
}

.page-news .lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--body);
}

.page-news .prose {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body);
}

.page-news .mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.page-news .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--sans);
  font-size: 15px;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}

.page-news .btn--gold {
  background: var(--gold);
  border: 1px solid var(--gold);
  color: #0A1420;
}

.page-news .btn--gold:hover {
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.page-news .btn--ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--gold-soft);
}

.page-news .btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* 首屏 */
.chg-hero {
  position: relative;
  padding: clamp(28px, 4.6vw, 60px) 0 clamp(32px, 4.6vw, 60px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(200, 160, 60, 0.1), transparent 62%),
    var(--ink);
}

.chg-hero-inner {
  display: grid;
  gap: 34px;
}

.chg-hero-copy h1 {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(33px, 5vw, 62px);
  line-height: 1.14;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.chg-hero-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--celadon);
}

.chg-hero-meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.chg-hero-meta li span {
  color: var(--gold);
}

.chg-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.chg-hero-art {
  margin: 0;
  position: relative;
}

.chg-hero-art img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.chg-hero-art::before,
.chg-hero-art::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold);
  opacity: 0.8;
}

.chg-hero-art::before {
  top: -5px;
  left: -5px;
  border-right: 0;
  border-bottom: 0;
}

.chg-hero-art::after {
  bottom: 26px;
  right: -5px;
  border-left: 0;
  border-top: 0;
}

.chg-caption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--celadon);
}

/* 速览 */
.chg-summary {
  padding: clamp(32px, 4.4vw, 60px) 0;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.chg-summary-head {
  display: grid;
  gap: 16px;
  margin-bottom: 30px;
}

.chg-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
}

.chg-stat {
  padding: 20px 16px 22px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.chg-stat:nth-child(2n + 1) {
  border-left: 0;
}

.chg-stat-num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.chg-stat-label {
  display: block;
  margin-top: 12px;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.chg-stat-note {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--celadon);
}

/* 条目列表 */
.chg-list {
  padding: clamp(32px, 4.4vw, 64px) 0;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.chg-list-head {
  margin-bottom: 26px;
}

.chg-list-figure {
  margin: 0 0 36px;
}

.chg-list-figure img,
.chg-types-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.chg-timeline {
  position: relative;
}

.chg-batch {
  padding-bottom: 34px;
}

.chg-batch:last-child {
  padding-bottom: 0;
}

.chg-batch-inner {
  display: grid;
  gap: 14px;
}

.chg-scale {
  display: flex;
  align-items: baseline;
  gap: 12px;
  position: relative;
}

.chg-scale-batch {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.chg-scale-time {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--celadon);
}

.chg-batch-head {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

.chg-batch-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(19px, 2.3vw, 25px);
  letter-spacing: 0.06em;
  color: var(--paper);
}

.chg-batch-note {
  margin: 10px 0 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--celadon);
}

.chg-group {
  margin-top: 28px;
}

.chg-group:first-of-type {
  margin-top: 0;
}

.chg-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--chg-hair);
}

.chg-group-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.chg-group-count {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--celadon);
}

.chg-items {
  display: grid;
  gap: 14px;
}

.chg-item {
  position: relative;
  padding: 15px 16px 16px;
  background: var(--ink-2);
  border-left: 3px solid var(--line);
  border-radius: var(--radius);
  transition: background var(--ease), transform var(--ease);
}

.chg-item:hover {
  background: var(--ink-3);
  transform: translateY(-2px);
}

.chg-item--version {
  border-left-color: var(--chg-version);
}

.chg-item--index {
  border-left-color: var(--chg-index);
}

.chg-item--adapt {
  border-left-color: var(--chg-adapt);
}

.chg-item--faq {
  border-left-color: var(--chg-faq);
}

.chg-item-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.chg-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  border-radius: 1px;
  border: 1px solid transparent;
}

.chg-tag--version {
  color: var(--gold);
  background: rgba(200, 160, 60, 0.12);
  border-color: rgba(200, 160, 60, 0.38);
}

.chg-tag--index {
  color: var(--celadon);
  background: rgba(126, 154, 148, 0.12);
  border-color: rgba(126, 154, 148, 0.42);
}

.chg-tag--adapt {
  color: var(--gold-soft);
  background: rgba(235, 214, 155, 0.1);
  border-color: rgba(235, 214, 155, 0.35);
}

.chg-tag--faq {
  color: var(--chg-faq);
  background: rgba(179, 57, 44, 0.16);
  border-color: rgba(179, 57, 44, 0.5);
}

.chg-item-module {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--celadon);
}

.chg-item-title {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.chg-item-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--body);
}

.chg-item-impact {
  margin: 10px 0 0;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--celadon);
}

/* 往期批次折叠 */
.chg-details {
  border-top: 1px solid var(--line);
}

.chg-details > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

.chg-details > summary::-webkit-details-marker {
  display: none;
}

.chg-details > summary:hover .chg-batch-title {
  color: var(--gold-soft);
}

.chg-toggle {
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 1px;
}

.chg-toggle::after {
  content: "展开";
}

.chg-details[open] .chg-toggle {
  color: var(--celadon);
  border-color: var(--line);
}

.chg-details[open] .chg-toggle::after {
  content: "收起";
}

.chg-details > .chg-batch-body {
  padding-top: 4px;
}

/* 分类说明 */
.chg-types {
  padding: clamp(32px, 4.4vw, 64px) 0;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.chg-types-figure {
  margin: 0 0 30px;
}

.chg-types-grid {
  display: grid;
  gap: 18px;
}

.chg-type-card {
  padding: 22px 20px 22px;
  background: var(--ink-2);
  border-radius: var(--radius);
  border-top: 3px solid var(--line);
}

.chg-type-card--version {
  border-top-color: var(--chg-version);
}

.chg-type-card--index {
  border-top-color: var(--chg-index);
}

.chg-type-card--adapt {
  border-top-color: var(--chg-adapt);
}

.chg-type-card--faq {
  border-top-color: var(--chg-faq);
}

.chg-type-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.chg-type-name {
  margin: 0;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.chg-type-count {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--celadon);
}

.chg-type-body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--body);
}

.chg-type-rule {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--chg-hair);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--celadon);
}

.chg-type-rule span {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* 对照关系 */
.chg-mapping {
  padding: clamp(32px, 4.4vw, 64px) 0;
  border-bottom: 1px solid var(--line);
  background: var(--ink-2);
}

.chg-mapping-inner {
  display: grid;
  gap: 28px;
}

.chg-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.chg-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
}

.chg-table-caption {
  caption-side: top;
  text-align: left;
  padding-bottom: 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--celadon);
}

.chg-table th {
  text-align: left;
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--celadon);
  background: var(--ink-3);
  border: 1px solid var(--line);
}

.chg-table tbody th {
  background: transparent;
  padding: 13px 14px;
}

.chg-table td {
  padding: 13px 14px;
  line-height: 1.72;
  color: var(--body);
  border: 1px solid var(--line);
  vertical-align: top;
}

.chg-table tbody tr:hover td,
.chg-table tbody tr:hover th {
  background: rgba(20, 43, 63, 0.65);
}

.chg-mini {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  border-radius: 1px;
  border: 1px solid transparent;
  white-space: nowrap;
}

.chg-mini--version {
  color: var(--gold);
  border-color: rgba(200, 160, 60, 0.4);
  background: rgba(200, 160, 60, 0.12);
}

.chg-mini--index {
  color: var(--celadon);
  border-color: rgba(126, 154, 148, 0.42);
  background: rgba(126, 154, 148, 0.12);
}

.chg-mini--adapt {
  color: var(--gold-soft);
  border-color: rgba(235, 214, 155, 0.35);
  background: rgba(235, 214, 155, 0.1);
}

.chg-mini--faq {
  color: var(--chg-faq);
  border-color: rgba(179, 57, 44, 0.5);
  background: rgba(179, 57, 44, 0.16);
}

/* 季度基线：暖白纸 */
.chg-baseline {
  padding: clamp(36px, 5vw, 74px) 0;
  background: var(--paper);
  color: #25313D;
  border-top: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
}

.chg-baseline-inner {
  display: grid;
  gap: 30px;
}

.chg-baseline-figure {
  margin: 0;
}

.chg-baseline-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid #C9BFA8;
}

.chg-baseline-caption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: #6C7566;
}

.page-news .chg-baseline .eyebrow {
  color: #9A7420;
}

.chg-baseline-title {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(25px, 3.4vw, 36px);
  line-height: 1.28;
  letter-spacing: 0.06em;
  color: #0C1722;
}

.chg-baseline-lede {
  margin: 16px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.88;
  color: #3C4A57;
}

.chg-baseline-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.chg-baseline-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0 14px;
  border-top: 1px solid #D8CEB9;
}

.chg-baseline-num {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: #9A7420;
  padding-top: 4px;
}

.chg-baseline-item h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  letter-spacing: 0.06em;
  color: #0C1722;
}

.chg-baseline-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: #41505E;
}

.chg-baseline-link {
  display: inline-block;
  margin-top: 24px;
  padding-bottom: 3px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: #8A6511;
  text-decoration: none;
  border-bottom: 1px solid #C4A96A;
  transition: color var(--ease), border-color var(--ease);
}

.chg-baseline-link:hover {
  color: #5E4408;
  border-bottom-color: #8A6511;
}

/* 提醒 */
.chg-alert {
  padding: clamp(32px, 4.4vw, 64px) 0;
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.chg-alert-head {
  max-width: 46em;
}

.chg-steps {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.chg-step {
  padding: 2px 0 2px 18px;
  border-left: 1px solid var(--line);
}

.chg-step-num {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.chg-step h3 {
  margin: 10px 0 8px;
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.chg-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--body);
}

.chg-alert-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
  margin-top: 32px;
  padding-top: 26px;
  border-top: 1px dashed var(--chg-hair);
}

.chg-inline-link {
  font-size: 14.5px;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 160, 60, 0.5);
  padding-bottom: 2px;
  transition: color var(--ease), border-color var(--ease);
}

.chg-inline-link:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

@media (min-width: 700px) {
  .chg-summary-head {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: end;
    gap: 40px;
  }

  .chg-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .chg-stat:nth-child(2n + 1) {
    border-left: 1px solid var(--line);
  }

  .chg-stat:nth-child(4n + 1) {
    border-left: 0;
  }

  .chg-types-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .chg-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 860px) {
  .chg-hero-inner {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: end;
    gap: 56px;
  }

  .chg-batch-inner {
    grid-template-columns: var(--chg-rail) minmax(0, 1fr);
    gap: 30px;
  }

  .chg-scale {
    display: block;
    padding-right: 18px;
    text-align: right;
  }

  .chg-scale::before {
    content: "";
    position: absolute;
    top: -34px;
    bottom: -34px;
    right: 0;
    width: 1px;
    background: repeating-linear-gradient(
      to bottom,
      var(--celadon) 0 5px,
      transparent 5px 11px
    );
    opacity: 0.42;
  }

  .chg-batch:first-child .chg-scale::before {
    top: 12px;
  }

  .chg-batch:last-child .chg-scale::before {
    bottom: 0;
  }

  .chg-scale::after {
    content: "";
    position: absolute;
    top: 9px;
    right: -4px;
    width: 9px;
    height: 9px;
    background: var(--gold);
  }

  .chg-scale-batch {
    display: block;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.34em;
    margin: 0 0 14px auto;
  }

  .chg-scale-time {
    display: block;
    margin-top: 12px;
  }
}

@media (min-width: 960px) {
  .chg-mapping-inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
    gap: 48px;
  }

  .chg-baseline-inner {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
    gap: 56px;
  }
}

@media (min-width: 1180px) {
  .chg-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .chg-item,
  .page-news .btn,
  .page-news .chg-baseline-link,
  .page-news .chg-inline-link {
    transition: none;
  }

  .page-news .chg-item:hover {
    transform: none;
  }
}