.page-news {
  --news-rail-w: 216px;
  --news-blue-soft: #E4EAF2;
  --news-green-soft: #DCEAE5;
  --news-warn-soft: #F3DDD8;
  display: block;
}

/* ---------- 刊头 ---------- */
.page-news .news-head {
  padding: clamp(22px, 4.5vw, 44px) 0 clamp(20px, 4vw, 36px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-head h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 22ch;
}

.page-news .news-lede {
  margin: 16px 0 0;
  max-width: 44ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-news .news-stats {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
}

.page-news .news-stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  border-left: 2px solid var(--signal);
  padding-left: 10px;
}

.page-news .stat-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-news .stat-lbl {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 布局 ---------- */
.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(24px, 4vw, 44px) 0 clamp(52px, 8vw, 96px);
}

.page-news .news-flow {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  min-width: 0;
}

/* ---------- 左栏 ---------- */
.page-news .news-rail {
  border: 1px solid var(--line);
  background: var(--card);
  padding: 18px 16px;
}

.page-news .rail-issue {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.page-news .rail-sub {
  margin: 6px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-news .rail-nav {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-news .rail-nav ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .rail-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 120ms var(--ease), border-color 120ms var(--ease), color 120ms var(--ease);
}

.page-news .rail-nav a:hover,
.page-news .rail-nav a:focus-visible {
  background: var(--signal-soft);
  border-left-color: var(--signal);
  color: var(--ink);
}

.page-news .rail-idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--signal-deep);
}

.page-news .rail-legend {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-news .rail-legend-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .rail-legend ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-news .rail-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-2);
}

.page-news .dot {
  width: 10px;
  height: 10px;
  flex: none;
  display: inline-block;
  background: var(--muted);
}

.page-news .dot--method { background: var(--signal); }
.page-news .dot--param { background: var(--ink); }
.page-news .dot--scene { background: var(--pass); }
.page-news .dot--version { background: var(--muted); }

/* ---------- 章节通用 ---------- */
.page-news .section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 10px;
}

.page-news .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 2.8vw, 30px);
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.2;
}

.page-news .section-head .index-code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}

.page-news .sec-note {
  margin: 12px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .sec-tail {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-news .sec-tail a,
.page-news .subscribe-note a {
  color: var(--signal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 本期导读 ---------- */
.page-news .lead-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--line);
  background: var(--card);
}

.page-news .lead-card {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(22px, 3.6vw, 38px);
}

.page-news .lead-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal);
}

.page-news .lead-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-news .lead-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-top: 20px;
  border-top: 1px solid rgba(247, 242, 232, 0.16);
}

.page-news .lead-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-news .lead-no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--signal);
  padding-top: 4px;
}

.page-news .lead-list h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 700;
  line-height: 1.35;
}

.page-news .lead-list h3 a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 31, 0.55);
  transition: border-color 140ms var(--ease), color 140ms var(--ease);
}

.page-news .lead-list h3 a:hover,
.page-news .lead-list h3 a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-news .lead-list p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(247, 242, 232, 0.76);
}

.page-news .lead-figure {
  margin: 0;
  min-height: 230px;
  background: var(--ink-2);
}

/* ---------- 图容器 ---------- */
.page-news .news-figure {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--card);
}

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

.page-news .news-figure--wide {
  margin: 20px 0 0;
}

.page-news .news-figure--compact {
  margin: 20px 0 0;
}

.page-news .media-cap {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
  background: var(--card);
}

/* ---------- 筛选条 ---------- */
.page-news .filter-bar--news {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shade-top);
}

.page-news .filter-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 4px;
}

.page-news .filter-bar--news .chip {
  font-family: var(--font-body);
  font-size: 13.5px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-2);
  cursor: pointer;
  transition: background 120ms var(--ease), color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-news .filter-bar--news .chip:hover {
  background: var(--signal-soft);
  border-color: var(--signal-soft);
}

.page-news .filter-bar--news .chip[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

/* ---------- 文章卡 ---------- */
.page-news .post-list {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-news .post-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--muted);
  padding: 16px 18px 18px;
  transition: background 120ms var(--ease), border-color 120ms var(--ease);
}

.page-news .post-card:hover {
  background: #fffefb;
}

.page-news .post-card[hidden] {
  display: none;
}

.page-news .post-card--method { border-top-color: var(--signal); }
.page-news .post-card--param { border-top-color: var(--ink); }
.page-news .post-card--scene { border-top-color: var(--pass); }
.page-news .post-card--version { border-top-color: var(--muted); }

.page-news .post-meta {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  color: var(--ink-2);
  background: var(--line);
}

.page-news .tag--method { background: var(--signal-soft); color: var(--signal-deep); }
.page-news .tag--param { background: var(--news-blue-soft); color: var(--ink-2); }
.page-news .tag--scene { background: var(--news-green-soft); color: var(--pass); }
.page-news .tag--version { background: var(--news-warn-soft); color: var(--warn); }

.page-news .post-time {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .post-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
  letter-spacing: -0.005em;
}

.page-news .post-summary {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.page-news .post-more {
  margin-top: 12px;
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

.page-news .post-more summary {
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--signal-deep);
}

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

.page-news .post-more summary::after {
  content: " ＋";
}

.page-news .post-more[open] summary::after {
  content: " －";
}

.page-news .post-more p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* 分组递减：越往下卡片越短 */
.page-news .post-list--lg .post-title { font-size: clamp(18px, 2.2vw, 22px); }
.page-news .post-list--lg .post-card { padding: 20px 22px 22px; }

.page-news .post-list--md .post-title { font-size: clamp(17px, 1.9vw, 19px); }
.page-news .post-list--md .post-summary { font-size: 14.5px; }

.page-news .post-list--sm .post-title { font-size: 16px; }
.page-news .post-list--sm .post-summary { font-size: 14px; -webkit-line-clamp: 2; }

/* ---------- 版本动态 ---------- */
.page-news .version-wrap {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-news .version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-left: 2px solid var(--line);
}

.page-news .version-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0 16px 18px;
  position: relative;
}

.page-news .version-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 22px;
  width: 12px;
  height: 12px;
  background: var(--signal);
}

.page-news .v-code {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.04em;
}

.page-news .v-time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .version-item h3 {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-news .version-item p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-2);
}

/* ---------- 订阅 ---------- */
.page-news .subscribe-card {
  margin-top: 20px;
  background: var(--ink);
  color: var(--paper);
  border-top: 3px solid var(--signal);
  padding: clamp(22px, 3.6vw, 38px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-news .subscribe-copy h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.3;
  color: var(--paper);
}

.page-news .subscribe-copy p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 242, 232, 0.78);
  max-width: 42ch;
}

.page-news .subscribe-note {
  font-size: 13.5px !important;
}

.page-news .subscribe-note a {
  color: var(--signal);
}

.page-news .sub-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(247, 242, 232, 0.66);
  margin-bottom: 8px;
}

.page-news .sub-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .sub-input {
  flex: 1 1 180px;
  min-width: 0;
  background: rgba(247, 242, 232, 0.06);
  border: 1px solid rgba(247, 242, 232, 0.3);
  color: var(--card);
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.page-news .sub-input::placeholder {
  color: rgba(247, 242, 232, 0.42);
}

.page-news .sub-input:focus-visible,
.page-news .sub-btn:focus-visible,
.page-news .filter-bar--news .chip:focus-visible,
.page-news .rail-nav a:focus-visible,
.page-news .lead-list h3 a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-news .sub-btn {
  flex: none;
}

.page-news .sub-hint {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(247, 242, 232, 0.6);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .lead-grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  }

  .page-news .post-list--scene {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .version-wrap {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-news .news-figure--compact {
    margin-top: 8px;
  }
}

@media (min-width: 960px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .news-rail {
    position: sticky;
    top: 116px;
  }

  .page-news .subscribe-card {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
    align-items: start;
  }

  .page-news .post-list--lg {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .post-list--lg .post-card:first-child {
    grid-column: 1 / -1;
  }

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

@media (min-width: 1180px) {
  .page-news .news-head h1 {
    max-width: 24ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .post-card,
  .page-news .rail-nav a,
  .page-news .filter-bar--news .chip {
    transition: none;
  }
}
</main>