.page-news {
  --news-filter-width: 220px;
  --news-card-pad: clamp(1rem, 2.2vw, 1.5rem);
}

.page-news img {
  max-width: 100%;
  height: auto;
}

.page-news .breadcrumb {
  padding-top: 1.25rem;
  padding-bottom: 0;
}

/* ===== 首屏 ===== */
.page-news .news-masthead {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-line);
  background:
    radial-gradient(circle at 82% 20%, rgba(122, 59, 255, 0.24), transparent 34%),
    radial-gradient(circle at 8% 86%, rgba(245, 184, 46, 0.12), transparent 30%),
    linear-gradient(135deg, var(--navy-panel) 0%, var(--navy-deep) 66%);
}

.page-news .news-masthead__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  padding-block: 2.5rem 2rem;
}

.page-news .news-masthead__kicker {
  margin-bottom: 1rem;
}

.page-news .news-masthead__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-news .news-masthead__site {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.5em;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-news .news-masthead__sep {
  display: none;
}

.page-news .news-masthead__lede {
  max-width: 46rem;
  margin: 0 0 1.6rem;
  color: var(--slate);
  font-size: 1rem;
  line-height: 1.8;
}

.page-news .news-masthead__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-news .news-masthead__visual {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
}

.page-news .news-masthead__visual img,
.page-news .news-download__visual img,
.page-news .news-guide__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 章节通用 ===== */
.page-news .chapter {
  padding-block: 3.5rem 1rem;
  scroll-margin-top: 5.5rem;
}

.page-news .chapter__head {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-line);
}

.page-news .chapter__no {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1.2px var(--gold);
}

.page-news .chapter__title h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--paper);
}

.page-news .chapter__title p {
  margin: 0;
  color: var(--slate);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== 编辑目录筛选 ===== */
.page-news .news-dir {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-news .news-filter__radio {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
  outline: none;
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.page-news .news-filter__heading {
  flex: 0 0 100%;
  margin: 0.25rem 0 0.1rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-news .news-filter__item {
  display: inline-flex;
  align-items: center;
  min-height: 2.15rem;
  padding: 0.35rem 0.95rem;
  border: 1px solid var(--border-line);
  border-radius: 999px;
  background: rgba(18, 27, 62, 0.6);
  color: var(--slate);
  font-size: 0.875rem;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-news .news-filter__item:hover {
  border-color: var(--gold);
  color: var(--paper);
}

.page-news .news-filter__divider {
  flex-basis: 100%;
  height: 1px;
  margin: 0.35rem 0;
  background: var(--border-line);
}

.page-news .news-filter__link {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.15rem;
  font-size: 0.875rem;
  color: var(--slate);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-news .news-filter__link:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-news #nf-all:checked ~ .news-filter label[for="nf-all"],
.page-news #nf-version:checked ~ .news-filter label[for="nf-version"],
.page-news #nf-feature:checked ~ .news-filter label[for="nf-feature"],
.page-news #nf-mobile:checked ~ .news-filter label[for="nf-mobile"],
.page-news #nf-download:checked ~ .news-filter label[for="nf-download"],
.page-news #nf-review:checked ~ .news-filter label[for="nf-review"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy-deep);
  font-weight: 700;
  box-shadow: var(--shadow-gold);
}

.page-news #nf-version:checked ~ .news-list .news-item:not([data-cat="version"]),
.page-news #nf-feature:checked ~ .news-list .news-item:not([data-cat="feature"]),
.page-news #nf-mobile:checked ~ .news-list .news-item:not([data-cat="mobile"]),
.page-news #nf-download:checked ~ .news-list .news-item:not([data-cat="download"]),
.page-news #nf-review:checked ~ .news-list .news-item:not([data-cat="review"]) {
  display: none;
}

.page-news .news-dir:has(#nf-all:focus-visible) label[for="nf-all"],
.page-news .news-dir:has(#nf-version:focus-visible) label[for="nf-version"],
.page-news .news-dir:has(#nf-feature:focus-visible) label[for="nf-feature"],
.page-news .news-dir:has(#nf-mobile:focus-visible) label[for="nf-mobile"],
.page-news .news-dir:has(#nf-download:focus-visible) label[for="nf-download"],
.page-news .news-dir:has(#nf-review:focus-visible) label[for="nf-review"] {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ===== 文章索引列表 ===== */
.page-news .news-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-item {
  margin: 0;
  overflow: hidden;
  background: var(--navy-panel);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-news .news-item:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow-gold);
}

.page-news .news-item__details {
  display: block;
}

.page-news .news-item__summary {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  gap: 0.85rem;
  align-items: center;
  padding: var(--news-card-pad);
  cursor: pointer;
  list-style: none;
}

.page-news .news-item__summary::-webkit-details-marker {
  display: none;
}

.page-news .news-item__index {
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--gold);
}

.page-news .news-item__title {
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .news-item__meta {
  grid-column: 2;
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 0.55rem;
}

.page-news .news-item__arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  font-size: 0.9rem;
  color: var(--gold);
  border: 1px solid var(--border-line);
  border-radius: 50%;
  transition: transform var(--t-mid), border-color var(--t-fast), background var(--t-fast), color var(--t-fast);
}

.page-news .news-item__details[open] .news-item__arrow {
  transform: rotate(45deg);
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy-deep);
}

.page-news .news-item__excerpt {
  padding: 1rem var(--news-card-pad) var(--news-card-pad);
  color: var(--slate);
  font-size: 0.925rem;
  line-height: 1.75;
  border-top: 1px dashed var(--border-line);
}

.page-news .news-item__excerpt p {
  margin: 0 0 0.9rem;
}

.page-news .btn--sm {
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
}

/* ===== 栏目下载专题 ===== */
.page-news .news-download {
  position: relative;
  padding-block: 3.5rem 3rem;
  border-top: 2px solid var(--gold);
  border-bottom: 1px solid var(--border-line);
  background:
    radial-gradient(circle at 18% 10%, rgba(228, 67, 138, 0.18), transparent 30%),
    radial-gradient(circle at 85% 85%, rgba(122, 59, 255, 0.16), transparent 32%),
    var(--navy-panel);
}

.page-news .news-download .chapter__no {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  font-size: 4rem;
  opacity: 0.7;
  -webkit-text-stroke-color: rgba(245, 184, 46, 0.32);
}

.page-news .news-download__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.page-news .news-download__content h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--paper);
}

.page-news .news-download__content > p {
  margin: 0 0 1.4rem;
  color: var(--slate);
  line-height: 1.75;
}

.page-news .news-download__data {
  display: grid;
  gap: 1px;
  overflow: hidden;
  background: var(--border-line);
  border: 1px solid var(--border-line);
  border-radius: 12px;
}

.page-news .news-download__data .data-row {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  padding: 0.8rem 1rem;
  background: var(--navy-deep);
}

.page-news .news-download__data .data-row__label {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-news .news-download__data .data-row__value {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--paper);
  word-break: break-word;
}

.page-news .news-download__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-news .news-download__visual {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
}

/* ===== 功能使用指南 ===== */
.page-news .news-guide {
  padding-block: 3.5rem 3rem;
  scroll-margin-top: 5.5rem;
}

.page-news .news-guide__list {
  display: grid;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-guide__card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: var(--news-card-pad);
  background: var(--navy-panel);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
  transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-news .news-guide__card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-soft);
  box-shadow: var(--shadow-gold);
}

.page-news .news-guide__card-content {
  min-width: 0;
}

.page-news .news-guide__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-news .news-guide__card h3 {
  margin: 0.35rem 0 0.6rem;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--paper);
}

.page-news .news-guide__card-content > p {
  margin: 0;
  color: var(--slate);
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-news .news-guide__steps {
  display: grid;
  gap: 0.4rem;
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  color: var(--paper);
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-news .news-guide__steps li::marker {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--gold);
}

.page-news .news-guide__visual {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
  background: var(--navy-deep);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-card);
}

.page-news .news-guide__visual--svg {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background:
    radial-gradient(circle at 24% 18%, rgba(245, 184, 46, 0.14), transparent 38%),
    var(--navy-deep);
}

.page-news .news-guide__visual--svg svg {
  width: 100%;
  height: auto;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 860px) {
  .page-news .news-masthead {
    min-height: 500px;
  }

  .page-news .news-masthead__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 3.5rem;
    padding-block: 4rem;
  }

  .page-news .news-masthead__title {
    font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  }

  .page-news .news-masthead__visual {
    align-self: center;
  }

  .page-news .news-dir {
    grid-template-columns: var(--news-filter-width) minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: start;
  }

  .page-news .news-filter {
    position: sticky;
    top: 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.4rem;
    padding: 1rem 0;
  }

  .page-news .news-filter__heading {
    margin-top: 0.4rem;
  }

  .page-news .news-filter__item {
    width: fit-content;
  }

  .page-news .news-filter__divider {
    margin: 0.5rem 0;
  }

  .page-news .news-item__summary {
    grid-template-columns: 1.75rem minmax(0, 1fr) auto;
  }

  .page-news .news-item__meta {
    grid-column: auto;
    justify-self: end;
  }

  .page-news .news-download__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 3rem;
  }

  .page-news .news-download .chapter__no {
    font-size: 5rem;
  }

  .page-news .news-guide__card {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: center;
    padding: 1.75rem;
  }

  .page-news .news-guide__card--reverse .news-guide__visual {
    order: -1;
  }
}