.page-news {
  overflow-x: clip;
}

/* ===== 页面头图 ===== */
.page-news .news-page-head {
  position: relative;
  background: var(--deep-green);
  color: var(--white);
  padding: clamp(28px, 6vw, 72px) 0 48px;
}

.page-news .news-page-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.045) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.045) 50%, rgba(255, 255, 255, 0.045) 75%, transparent 75%, transparent);
  background-size: 16px 16px;
  pointer-events: none;
}

.page-news .news-page-head .container,
.page-news .page-head-grid {
  position: relative;
  z-index: 1;
}

.page-news .news-page-head .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-fast);
}

.page-news .news-page-head .breadcrumb a:hover {
  color: var(--white);
}

.page-news .news-page-head .breadcrumb-sep {
  color: var(--signal-orange);
}

.page-news .news-page-head .breadcrumb [aria-current="page"] {
  color: var(--champion-gold);
  font-weight: 600;
}

.page-news .page-head-copy .section-eyebrow {
  color: var(--champion-gold);
}

.page-news .page-title {
  font-size: clamp(2.2rem, 6vw, 4.8rem);
  margin: 10px 0 18px;
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.page-news .page-sub {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0;
}

.page-news .page-head-grid {
  display: grid;
  gap: 24px;
  margin-top: 32px;
  align-items: end;
}

.page-news .page-head-media {
  border: 1px solid rgba(255, 255, 255, 0.35);
}

/* ===== 章节通用行 ===== */
.page-news .section-heading-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.page-news .section-heading-row .section-note {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted-sage);
  line-height: 1.6;
}

/* ===== 筛选控制 ===== */
.page-news .filter-controls {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  padding: 12px;
  background: var(--white);
  border: 1px solid var(--mist-green);
  border-top: 3px solid var(--deep-green);
}

.page-news .filter-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.page-news .filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--deep-green);
  background: transparent;
  color: var(--deep-green);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-fast), color var(--duration-fast) var(--ease-fast), border-color var(--duration-fast) var(--ease-fast);
}

.page-news .filter-btn::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal-orange);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-fast);
}

.page-news .filter-input:checked + .filter-btn {
  background: var(--deep-green);
  color: var(--white);
  border-color: var(--deep-green);
}

.page-news .filter-input:checked + .filter-btn::before {
  opacity: 1;
}

.page-news .filter-input:focus-visible + .filter-btn {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.page-news .filter-count {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 2px 5px;
  border: 1px solid currentColor;
  border-radius: 2px;
  letter-spacing: 0.08em;
}

.page-news .filter-input:checked + .filter-btn .filter-count {
  color: var(--champion-gold);
  border-color: var(--champion-gold);
}

/* ===== 筛选逻辑 ===== */
.page-news #news-filter-data:checked ~ .news-list .news-item:not([data-category="data"]),
.page-news #news-filter-build:checked ~ .news-list .news-item:not([data-category="build"]),
.page-news #news-filter-season:checked ~ .news-list .news-item:not([data-category="season"]) {
  display: none;
}

/* ===== 更新列表 ===== */
.page-news .news-filter-panel {
  margin-top: 4px;
}

.page-news .news-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid transparent;
}

.page-news .news-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  padding: 24px 8px 24px 14px;
  border-bottom: 1px solid var(--mist-green);
  border-left: 3px solid transparent;
  background: var(--paper);
  transition: border-left-color var(--duration-fast) var(--ease-fast), background var(--duration-fast) var(--ease-fast);
}

.page-news .news-item:hover {
  border-left-color: var(--signal-orange);
  background: var(--white);
}

.page-news .news-item.is-featured {
  border-left-color: var(--champion-gold);
  background: var(--white);
}

.page-news .news-item-index {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted-sage);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.page-news .news-item-index::before {
  content: "> ";
  color: var(--signal-orange);
  font-weight: 700;
}

.page-news .news-item.is-featured .news-item-index::before {
  color: var(--champion-gold);
}

.page-news .news-item-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.page-news .news-item-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-news .news-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-news .news-item-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: var(--deep-green);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.page-news .news-item.is-featured .news-item-tag {
  background: var(--mid-green);
}

.page-news .news-item-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted-sage);
  letter-spacing: 0.05em;
}

.page-news .news-item-title {
  font-size: clamp(1rem, 2.4vw, 1.375rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}

.page-news .news-item-excerpt {
  font-size: 0.875rem;
  line-height: 1.7;
  color: #1A2620;
  margin: 2px 0 0;
}

.page-news .news-item-more {
  margin-top: 6px;
}

.page-news .news-item-more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--signal-orange);
  user-select: none;
}

.page-news .news-item-more summary::-webkit-details-marker {
  display: none;
}

.page-news .news-item-more summary::before {
  content: "▸";
  transition: transform var(--duration-fast) var(--ease-fast);
  display: inline-block;
}

.page-news .news-item-more[open] summary::before {
  transform: rotate(90deg);
}

.page-news .news-item-more summary:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.page-news .news-item-summary {
  margin-top: 14px;
  padding: 16px 18px;
  background: var(--mist-green);
  border-left: 3px solid var(--deep-green);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ink);
}

.page-news .news-item-summary p {
  margin: 0 0 8px;
}

.page-news .news-item-summary p:last-child {
  margin-bottom: 0;
  color: var(--muted-sage);
  font-size: 0.8125rem;
}

.page-news .news-item-media {
  order: -1;
}

/* ===== 版本索引 ===== */
.page-news .news-version-section {
  background: var(--deep-green);
  color: var(--white);
}

.page-news .news-version-section .section-eyebrow {
  color: var(--champion-gold);
}

.page-news .news-version-section .section-title {
  color: var(--white);
}

.page-news .news-version-section .section-note {
  color: rgba(255, 255, 255, 0.78);
}

.page-news .version-layout {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-news .version-table-wrap {
  background: var(--white);
  border-top: 3px solid var(--signal-orange);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14);
  overflow-x: auto;
}

.page-news .version-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  line-height: 1.6;
  background: var(--white);
}

.page-news .version-table th {
  background: var(--deep-green);
  color: var(--white);
  text-align: left;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 12px 16px;
  white-space: nowrap;
}

.page-news .version-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--mist-green);
  vertical-align: top;
}

.page-news .version-table tbody tr:nth-child(even) td {
  background: #F7F9F7;
}

.page-news .version-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--signal-orange);
}

.page-news .version-foot {
  padding: 18px 16px 4px;
  background: var(--white);
  font-size: 0.875rem;
  line-height: 1.8;
}

.page-news .version-foot p {
  margin: 0 0 6px;
}

.page-news .version-foot a {
  color: var(--deep-green);
  font-weight: 700;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color var(--duration-fast) var(--ease-fast);
}

.page-news .version-foot a:hover {
  color: var(--signal-orange);
}

.page-news .version-media {
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ===== 更新原则 ===== */
.page-news .news-principle-section {
  background: var(--paper);
}

.page-news .principle-head {
  display: grid;
  gap: 20px;
  align-items: end;
}

.page-news .principle-media {
  border: 1px solid var(--mist-green);
}

.page-news .principle-grid {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.page-news .principle-card {
  position: relative;
  padding: 28px 24px 24px;
  background: var(--white);
  border: 1px solid var(--mist-green);
  border-top: 3px solid var(--deep-green);
  transition: border-color var(--duration-fast) var(--ease-fast), transform var(--duration-fast) var(--ease-fast);
}

.page-news .principle-card:hover {
  border-color: var(--signal-orange);
  transform: translateY(-2px);
}

.page-news .principle-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--signal-orange);
  letter-spacing: 0.08em;
}

.page-news .principle-card h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .principle-card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: #1A2620;
}

/* ===== 媒体占位规范 ===== */
.page-news .page-head-media::before,
.page-news .news-item-media::before,
.page-news .version-media::before,
.page-news .principle-media::before {
  display: none;
}

.page-news .page-head-media img,
.page-news .news-item-media img,
.page-news .version-media img,
.page-news .principle-media img {
  position: static;
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .news-item-media img {
  border: 1px solid var(--mist-green);
}

/* ===== 平板 ≥768px ===== */
@media (min-width: 768px) {
  .page-news .page-head-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    gap: 40px;
  }

  .page-news .section-heading-row {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }

  .page-news .section-heading-row .section-note {
    max-width: 340px;
    text-align: right;
  }

  .page-news .filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .page-news .news-item {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 20px;
    padding: 32px 16px 32px 20px;
  }

  .page-news .news-item.is-featured .news-item-body {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    gap: 28px;
    align-items: start;
  }

  .page-news .news-item.is-featured .news-item-media {
    order: 0;
    grid-row: 1;
  }

  .page-news .news-item.is-featured .news-item-text {
    grid-row: 1;
  }

  .page-news .version-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
    gap: 40px;
  }

  .page-news .principle-head {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
  }

  .page-news .principle-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

/* ===== 桌面 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-news .news-page-head {
    padding-bottom: 64px;
  }

  .page-news .page-sub {
    font-size: 1.0625rem;
  }

  .page-news .filter-controls {
    padding: 16px 20px;
  }

  .page-news .news-item {
    padding-top: 36px;
    padding-bottom: 36px;
  }

  .page-news .news-item-title {
    font-size: 1.25rem;
  }

  .page-news .version-table th,
  .page-news .version-table td {
    padding: 16px 20px;
  }

  .page-news .version-foot {
    padding-left: 20px;
    padding-right: 20px;
  }

  .page-news .principle-card {
    padding: 32px 28px 28px;
  }
}