/* ============ 改版更新记录页 · 专属样式 ============ */

.page-news {
  --pn-gap: 44px;
  --pn-line-gold: rgba(232, 180, 74, 0.22);
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-news .shell {
  width: 100%;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-bottom: 26px;
}

.page-news .breadcrumb a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease);
}

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

.page-news .breadcrumb span[aria-current="page"] {
  color: var(--text-dim);
}

.page-news .crumb-sep {
  color: rgba(154, 160, 174, 0.5);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(88px, 12vw, 148px) 0 0;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(110% 70% at 82% 0%, rgba(91, 63, 209, 0.22), transparent 62%),
    radial-gradient(80% 55% at 4% 6%, rgba(232, 180, 74, 0.12), transparent 66%),
    var(--ink);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), rgba(53, 224, 214, 0.6), transparent);
  opacity: 0.5;
}

.page-news .hero-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-news .hero-copy .display {
  margin: 14px 0 0;
  font-size: clamp(34px, 8vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 18px) 100%, 0 100%);
}

.page-news .hero-copy .lead {
  margin: 22px 0 0;
  max-width: 40ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-news .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-news .hero-figure {
  aspect-ratio: 16 / 7;
  border: 1px solid var(--pn-line-gold);
  box-shadow: var(--shadow-2);
  background: var(--panel);
}

.page-news .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .hero-stats {
  list-style: none;
  margin: 56px 0 0;
  padding: 30px 0 52px;
  border-top: 1px solid var(--line);
  gap: 24px 16px;
}

.page-news .hero-stats .stat-value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-news .hero-stats .stat-label {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

/* ---------- 分区底色 ---------- */
.page-news .n-cream {
  background: var(--cream);
  color: var(--text-brown);
}

.page-news .n-dark {
  background: var(--ink);
  color: var(--text);
}

.page-news .n-cream .section-head .h2,
.page-news .n-cream .section-head .lead {
  color: var(--text-brown);
}

.page-news .n-cream .section-head .lead {
  color: var(--text-brown-dim);
}

.page-news .n-cream .eyebrow {
  color: var(--gold-deep);
  border-color: rgba(192, 138, 46, 0.42);
}

/* ---------- 阅读方式 ---------- */
.page-news .read-steps {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-cream);
}

.page-news .read-step {
  display: grid;
  grid-template-columns: 58px 1fr;
  grid-template-areas:
    "idx title"
    "idx text";
  gap: 6px 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-cream);
}

.page-news .read-idx {
  grid-area: idx;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.1;
  color: var(--gold-deep);
}

.page-news .read-step__title {
  grid-area: title;
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text-brown);
}

.page-news .read-step__text {
  grid-area: text;
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-brown-dim);
  max-width: 60ch;
}

.page-news .read-foot {
  margin: 34px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-brown-dim);
}

.page-news .read-foot .link-arrow {
  color: var(--gold-deep);
}

.page-news .read-foot .link-arrow:hover {
  color: var(--violet);
}

/* ---------- 时间轴 ---------- */
.page-news .tl-list {
  list-style: none;
  margin: 52px 0 0;
  padding: 0;
  display: grid;
  gap: var(--pn-gap);
}

.page-news .tl-item {
  position: relative;
  padding-left: 40px;
}

.page-news .tl-item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: calc(-1 * var(--pn-gap));
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(232, 180, 74, 0.55), rgba(232, 180, 74, 0.12));
}

.page-news .tl-item:last-child::before {
  bottom: auto;
  height: 26px;
}

.page-news .tl-dot {
  position: absolute;
  left: 0;
  top: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px rgba(232, 180, 74, 0.14);
  transition: box-shadow 0.28s var(--ease), background 0.28s var(--ease);
}

.page-news .tl-item:hover .tl-dot {
  background: var(--cyan);
  box-shadow: 0 0 0 7px rgba(53, 224, 214, 0.18);
}

.page-news .tl-card {
  background: linear-gradient(180deg, rgba(26, 29, 39, 0.96), rgba(13, 14, 19, 0.96));
  border: 1px solid var(--pn-line-gold);
  border-left: 2px solid var(--gold);
  padding: 26px 22px 28px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-news .tl-card:hover {
  transform: translateX(5px);
  border-color: rgba(232, 180, 74, 0.5);
}

.page-news .tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.page-news .tl-ver {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-news .tl-title {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 29px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--cream);
}

.page-news .tl-figure {
  margin: 22px 0 0;
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(154, 160, 174, 0.18);
  background: var(--panel);
}

.page-news .tl-figure .media-frame__caption {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-news .tl-pairs {
  display: grid;
  gap: 1px;
  margin-top: 24px;
  background: var(--pn-line-gold);
  border: 1px solid var(--pn-line-gold);
}

.page-news .tl-pair {
  background: var(--panel);
  padding: 18px 18px 20px;
}

.page-news .tl-pair__label {
  margin: 0 0 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gold-deep);
}

.page-news .tl-pair__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--text);
}

.page-news .tl-card .link-arrow {
  display: inline-block;
  margin-top: 22px;
  color: var(--cyan);
  font-size: 15px;
}

.page-news .tl-card .link-arrow:hover {
  color: var(--gold);
}

/* ---------- 标签板 ---------- */
.page-news .tag-board {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-cream);
  border: 1px solid var(--line-cream);
}

.page-news .tag-board__item {
  background: var(--cream);
  padding: 26px 22px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news .tag-board__item .tag {
  align-self: flex-start;
}

.page-news .tag-board__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-brown);
}

.page-news .tag-board__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-brown-dim);
}

.page-news .tag-board__meta {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-cream);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold-deep);
}

/* 奶油底上的标签配色微调 */
.page-news .n-cream .tag {
  border-color: rgba(36, 28, 23, 0.18);
  color: var(--text-brown);
}

.page-news .n-cream .tag--violet {
  background: rgba(91, 63, 209, 0.14);
  border-color: rgba(91, 63, 209, 0.34);
  color: #42309E;
}

.page-news .n-cream .tag--orange {
  background: rgba(226, 84, 42, 0.14);
  border-color: rgba(226, 84, 42, 0.34);
  color: #A93A15;
}

.page-news .n-cream .tag--cyan {
  background: rgba(20, 138, 132, 0.14);
  border-color: rgba(20, 138, 132, 0.34);
  color: #0E6B66;
}

/* ---------- 历史索引 ---------- */
.page-news .hist-wrap {
  display: grid;
  gap: 34px;
  margin-top: 42px;
}

.page-news .hist-figure {
  aspect-ratio: 4 / 3;
  border: 1px solid rgba(154, 160, 174, 0.16);
  background: var(--panel);
  margin: 0;
}

.page-news .hist-body {
  display: grid;
  gap: 30px;
}

.page-news .hist-group__title {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-news .hist-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pn-line-gold);
}

.page-news .hist-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 5px 12px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(154, 160, 174, 0.18);
  font-size: 14.5px;
}

.page-news .hist-code {
  flex: 0 0 56px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-news .hist-name {
  flex: 1 1 190px;
  color: var(--text);
  line-height: 1.6;
}

.page-news .hist-tag {
  flex: 0 0 auto;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gold-deep);
  padding: 2px 8px;
  border: 1px solid rgba(232, 180, 74, 0.3);
}

.page-news .hist-row:hover .hist-name {
  color: var(--cyan);
}

/* ---------- 尾部引导 ---------- */
.page-news .n-tail {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 90% 100%, rgba(91, 63, 209, 0.2), transparent 65%),
    var(--panel);
}

.page-news .tail-bar {
  display: grid;
  gap: 20px;
  align-items: center;
}

.page-news .tail-copy .h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--cream);
}

.page-news .tail-text {
  margin: 8px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-dim);
  max-width: 56ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .tl-pairs {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .tl-pair:last-child {
    grid-column: 1 / -1;
  }

  .page-news .tag-board {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .hist-body {
    grid-template-columns: 1fr 1fr;
    gap: 34px;
  }
}

@media (min-width: 1024px) {
  .page-news .hero-grid {
    grid-template-columns: 1.02fr 0.98fr;
    gap: 58px;
  }

  .page-news .tl-item {
    padding-left: 56px;
  }

  .page-news .tl-item::before {
    left: 6px;
  }

  .page-news .tl-card {
    padding: 34px 34px 36px;
  }

  .page-news .tl-figure {
    aspect-ratio: 16 / 9;
  }

  .page-news .hist-wrap {
    grid-template-columns: 0.72fr 1.28fr;
    gap: 48px;
    align-items: start;
  }

  .page-news .hist-figure {
    position: sticky;
    top: 96px;
  }

  .page-news .tag-board {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-news .read-steps {
    max-width: 900px;
  }

  .page-news .tail-bar {
    grid-template-columns: 1fr auto;
    gap: 40px;
  }
}

@media (max-width: 420px) {
  .page-news .hero-copy .display {
    font-size: 30px;
  }

  .page-news .tl-card {
    padding: 20px 16px 22px;
  }

  .page-news .tl-title {
    font-size: 19px;
  }

  .page-news .hero-stats {
    gap: 22px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .tl-card,
  .page-news .tl-dot,
  .page-news .hist-name {
    transition: none;
  }

  .page-news .tl-card:hover {
    transform: none;
  }
}