.page-news {
  --news-gap: clamp(18px, 2.4vw, 32px);
  --news-pad: clamp(22px, 2.8vw, 34px);
  padding-bottom: clamp(56px, 8vw, 110px);
}

.page-news .container {
  width: var(--shell);
  margin-inline: auto;
}

/* ---------- Hero ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(28px, 4vw, 56px) 0 clamp(26px, 3.6vw, 46px);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-mid) 18%, var(--line-mid) 82%, transparent);
}

.page-news .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-news .news-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-news .news-hero h1 {
  margin: 14px 0 18px;
  font-size: var(--fs-1);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 16ch;
}

.page-news .news-hero-lead {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-6);
  line-height: 1.8;
  color: var(--muted);
}

.page-news .news-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-news .news-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.page-news .fact-num {
  font-size: var(--fs-5);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-news .fact-label {
  font-size: var(--fs-8);
  color: var(--muted);
  letter-spacing: 0.08em;
}

.page-news .news-hero-note {
  display: none;
}

/* ---------- 主体分栏 ---------- */
.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
  align-items: start;
}

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

.page-news .news-rail {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .news-rail .rail-list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-news .news-rail .rail-list li {
  flex: 0 0 auto;
  margin: 0;
  list-style: none;
}

.page-news .news-rail .chapter-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-8);
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-news .news-rail .rail-link {
  display: block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: rgba(14, 21, 48, 0.55);
  font-size: var(--fs-8);
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-news .news-rail .rail-link:hover,
.page-news .news-rail .rail-link:focus-visible {
  color: var(--ink);
  border-color: var(--line-galaxy);
}

.page-news .news-rail .rail-link[aria-current="true"] {
  color: var(--ink);
  border-color: var(--line-cyan);
  background: rgba(53, 224, 208, 0.10);
}

/* ---------- 区块通用 ---------- */
.page-news .news-section {
  padding: clamp(36px, 5vw, 62px) 0;
  border-top: 1px solid var(--line);
}

.page-news .news-section:first-child {
  border-top: 0;
  padding-top: clamp(30px, 4vw, 46px);
}

.page-news .news-section .section-title {
  margin-top: 10px;
}

.page-news .news-section .section-note {
  max-width: 58ch;
}

/* ---------- 本季版本速览 ---------- */
.page-news .season-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 38px);
  align-items: start;
}

.page-news .season-copy {
  padding: var(--news-pad);
  background: rgba(14, 21, 48, 0.72);
  border: 1px solid var(--line);
  border-left: 3px solid var(--galaxy);
}

.page-news .season-version-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin: 0 0 22px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}

.page-news .season-version {
  margin: 0;
  font-size: var(--fs-5);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-news .season-points {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .season-points li {
  margin: 0;
  padding-left: 16px;
  border-left: 1px solid var(--line-mid);
}

.page-news .point-label {
  display: inline-block;
  margin-bottom: 6px;
  font-size: var(--fs-8);
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-news .season-points p {
  margin: 0;
  font-size: var(--fs-7);
  line-height: 1.8;
  color: var(--ink);
}

.page-news .season-action {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  font-size: var(--fs-7);
  line-height: 1.8;
  color: var(--muted);
}

.page-news .season-action .mono {
  display: inline-block;
  margin-right: 10px;
  font-size: var(--fs-8);
  letter-spacing: 0.16em;
}

.page-news .season-figure {
  margin: 0;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 12% 8%, rgba(123, 77, 255, 0.24), transparent 62%),
    radial-gradient(110% 80% at 88% 92%, rgba(53, 224, 208, 0.16), transparent 60%),
    var(--nebula);
}

.page-news .season-figure img,
.page-news .notes-figure img,
.page-news .card-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .season-figure .media-caption {
  display: block;
  padding: 10px 14px;
  font-size: var(--fs-8);
  letter-spacing: 0.1em;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 筛选条 ---------- */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 10px;
  margin-bottom: clamp(20px, 3vw, 32px);
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: rgba(14, 21, 48, 0.6);
}

.page-news .filter-label {
  margin-right: 6px;
  font-size: var(--fs-8);
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-news .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-8);
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line-mid);
  background: rgba(7, 11, 27, 0.5);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-news .filter-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--muted);
  flex: 0 0 auto;
}

.page-news .filter-chip:hover,
.page-news .filter-chip:focus-visible {
  border-color: var(--line-cyan);
  transform: translateY(-2px);
}

.page-news .filter-chip--structure::before { background: #7B4DFF; }
.page-news .filter-chip--index::before { background: #C4577A; }
.page-news .filter-chip--terminal::before { background: #35E0D0; }
.page-news .filter-chip--account::before { background: #9A86E8; }
.page-news .filter-chip--service::before { background: #F2C063; }

/* ---------- 季度分隔 ---------- */
.page-news .quarter + .quarter {
  margin-top: clamp(28px, 4vw, 46px);
}

.page-news .quarter-rail {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-news .quarter-num {
  font-size: clamp(30px, 4.2vw, 50px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: 0.02em;
  color: rgba(123, 77, 255, 0.66);
}

.page-news .quarter-name {
  font-size: var(--fs-8);
  letter-spacing: 0.24em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-news .quarter-rule {
  flex: 1 1 auto;
  min-width: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--line-mid), rgba(154, 166, 196, 0.04));
}

/* ---------- 卡片流 ---------- */
.page-news .post-grid {
  column-count: 1;
  column-gap: clamp(18px, 2.2vw, 30px);
  column-rule: 1px solid var(--line);
}

.page-news .post-card {
  position: relative;
  display: block;
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
  margin: 0 0 clamp(18px, 2.2vw, 28px);
  padding: clamp(18px, 2.2vw, 24px);
  background: var(--nebula);
  border: 1px solid var(--line);
  transition: border-color 220ms var(--ease), background-color 220ms var(--ease);
}

.page-news .post-card::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 2px;
  background: var(--galaxy);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 240ms var(--ease), background-color 240ms var(--ease);
}

.page-news .post-card:hover,
.page-news .post-card:focus-within {
  border-color: var(--line-cyan);
  background: #121A38;
}

.page-news .post-card:hover::before,
.page-news .post-card:focus-within::before {
  transform: scaleY(1);
  background: var(--cyan);
}

.page-news .post-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: var(--fs-8);
  letter-spacing: 0.1em;
  border: 1px solid;
}

.page-news .post-tag--structure {
  color: #BCA9FF;
  border-color: rgba(123, 77, 255, 0.55);
  background: rgba(123, 77, 255, 0.16);
}

.page-news .post-tag--index {
  color: #EBA3B8;
  border-color: rgba(140, 43, 74, 0.7);
  background: rgba(140, 43, 74, 0.22);
}

.page-news .post-tag--terminal {
  color: #8FF3E9;
  border-color: rgba(53, 224, 208, 0.5);
  background: rgba(53, 224, 208, 0.13);
}

.page-news .post-tag--account {
  color: #B6A4F1;
  border-color: rgba(75, 46, 158, 0.85);
  background: rgba(75, 46, 158, 0.3);
}

.page-news .post-tag--service {
  color: #F7D79A;
  border-color: rgba(242, 192, 99, 0.5);
  background: rgba(242, 192, 99, 0.13);
}

.page-news .post-card .card-figure {
  margin: 16px 0 4px;
  border: 1px solid var(--line);
  background: rgba(7, 11, 27, 0.6);
}

.page-news .post-card .card-title {
  margin: 14px 0 10px;
  font-size: var(--fs-5);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.page-news .post-card .card-desc {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 16px;
  font-size: var(--fs-7);
  line-height: 1.75;
  color: var(--muted);
}

.page-news .post-meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: var(--fs-8);
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 栏目调整档案 ---------- */
.page-news .archive-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .archive-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 200ms var(--ease);
}

.page-news .archive-row:first-child {
  border-top: 1px solid var(--line);
}

.page-news .archive-row:hover {
  background: rgba(123, 77, 255, 0.08);
}

.page-news .archive-old {
  font-size: var(--fs-7);
  color: var(--muted);
  text-decoration: line-through;
}

.page-news .archive-arrow {
  font-size: var(--fs-8);
  color: var(--line-mid);
}

.page-news .archive-new {
  font-size: var(--fs-7);
  font-weight: 700;
  color: var(--cyan);
}

.page-news .archive-name {
  flex: 1 1 210px;
  min-width: 0;
  font-size: var(--fs-7);
  color: var(--ink);
}

.page-news .archive-ver {
  font-size: var(--fs-8);
  letter-spacing: 0.1em;
  color: var(--gold);
}

/* ---------- 使用观察笔记 ---------- */
.page-news .notes-figure {
  margin: 0 0 clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  background:
    radial-gradient(100% 120% at 20% 0%, rgba(53, 224, 208, 0.18), transparent 60%),
    radial-gradient(100% 120% at 80% 100%, rgba(123, 77, 255, 0.24), transparent 62%),
    var(--nebula);
}

.page-news .notes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .note {
  padding: var(--news-pad);
  background: var(--void);
}

.page-news .note-index {
  margin: 0 0 10px;
  font-size: var(--fs-8);
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-news .note-title {
  margin: 0 0 12px;
  font-size: var(--fs-5);
  line-height: 1.5;
}

.page-news .note-text {
  margin: 0;
  font-size: var(--fs-7);
  line-height: 1.8;
  color: var(--muted);
}

.page-news .notes-foot {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--wine);
  font-size: var(--fs-7);
  line-height: 1.8;
  color: var(--muted);
}

.page-news .notes-foot a {
  color: var(--galaxy);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .notes-foot a:hover {
  color: var(--cyan);
}

/* ---------- 回看与收藏 ---------- */
.page-news .steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-news .step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 0;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .step-title {
  display: block;
  font-size: var(--fs-6);
  font-weight: 700;
  color: var(--ink);
}

.page-news .step-desc {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-7);
  line-height: 1.8;
  color: var(--muted);
}

.page-news .step-desc a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .step-desc a:hover {
  color: var(--gold);
}

.page-news .follow-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .step {
    grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
}

@media (min-width: 768px) {
  .page-news .post-grid {
    column-count: 2;
  }

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

@media (min-width: 900px) {
  .page-news .season-panel {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-news .news-hero-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 48px;
  }

  .page-news .news-hero-note {
    display: block;
    margin: 4px 0 0;
    padding-right: 14px;
    border-right: 1px solid var(--line);
    writing-mode: vertical-rl;
    font-size: var(--fs-8);
    letter-spacing: 0.34em;
    color: var(--muted);
  }

  .page-news .news-layout {
    grid-template-columns: minmax(196px, 236px) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 70px);
  }

  .page-news .news-rail {
    position: sticky;
    top: 96px;
    align-self: start;
    padding: 0 0 0 18px;
    border-top: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-news .news-rail .rail-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .news-rail .rail-list li + li {
    margin-top: 6px;
  }

  .page-news .news-rail .rail-link {
    border-color: transparent;
    background: transparent;
    padding: 5px 0 5px 12px;
    position: relative;
  }

  .page-news .news-rail .rail-link::before {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    top: 50%;
    width: 6px;
    height: 1px;
    background: var(--line-mid);
    transform: translateY(-50%);
    transition: width 200ms var(--ease), background-color 200ms var(--ease);
  }

  .page-news .news-rail .rail-link:hover::before,
  .page-news .news-rail .rail-link[aria-current="true"]::before {
    width: 10px;
    background: var(--cyan);
  }

  .page-news .news-rail .rail-link[aria-current="true"] {
    background: transparent;
    border-color: transparent;
    color: var(--cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .post-card,
  .page-news .post-card::before,
  .page-news .filter-chip,
  .page-news .news-rail .rail-link,
  .page-news .archive-row {
    transition: none;
  }

  .page-news .filter-chip:hover,
  .page-news .filter-chip:focus-visible {
    transform: none;
  }
}