.page-news {
  --news-rule: 2px solid var(--ink-line);
  --news-hair: 1px solid var(--ink-line);
}

/* ---------- 页头 ---------- */
.page-news .news-masthead {
  padding: var(--gap-lg) 0 var(--gap-xl);
  border-bottom: var(--news-rule);
}

.page-news .news-masthead .eyebrow {
  margin: 0 0 var(--gap-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.14em;
  color: var(--neon-cyan);
}

.page-news .news-masthead__title {
  margin: 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-6);
  line-height: 1.14;
  color: var(--paper);
}

.page-news .news-masthead__lead {
  margin: var(--gap-md) 0 var(--gap-lg);
  max-width: 70ch;
  font-size: var(--fs-2);
  line-height: 1.85;
  color: var(--quiet-blue);
}

.page-news .news-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-sm);
  margin: 0;
  padding: 0;
}

.page-news .news-meta__cell {
  padding: var(--gap-sm) var(--gap-md);
  background: var(--ink-deep);
  border: var(--news-rule);
  box-shadow: var(--shadow-brut-sm);
}

.page-news .news-meta__cell dt {
  font-size: var(--fs-1);
  letter-spacing: 0.06em;
  color: var(--quiet-blue);
}

.page-news .news-meta__cell dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-3);
  color: var(--warm-gold);
}

/* ---------- 本期导读 ---------- */
.page-news .news-brief__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-lg);
  align-items: start;
}

.page-news .news-brief__list {
  list-style: none;
  margin: var(--gap-md) 0 0;
  padding: 0;
  display: grid;
  gap: var(--gap-sm);
}

.page-news .news-brief__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--gap-sm);
  padding-bottom: var(--gap-sm);
  border-bottom: var(--news-hair);
}

.page-news .news-brief__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-2);
  color: var(--magenta);
}

.page-news .news-brief__list p {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--quiet-blue);
}

/* ---------- 媒体容器通用 ---------- */
.page-news .media-frame {
  margin: 0;
  padding: 0;
  background: var(--ink-deep);
  border: var(--news-rule);
  box-shadow: var(--shadow-brut);
  overflow: hidden;
}

.page-news .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .media-frame__caption {
  padding: 10px var(--gap-sm);
  border-top: var(--news-hair);
  font-size: var(--fs-1);
  line-height: 1.6;
  color: var(--quiet-blue);
}

/* ---------- 条目索引区 ---------- */
.page-news .news-index__inner {
  position: relative;
}

.page-news .news-index .filter-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-news .news-index__split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-lg);
}

.page-news .news-index__intro {
  margin: 0 0 var(--gap-md);
  max-width: 68ch;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--quiet-blue);
}

.page-news .news-index__aside .aside-index {
  list-style: none;
  margin: var(--gap-sm) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .aside-index__item {
  border-bottom: var(--news-hair);
}

.page-news .news-tag-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0 10px 12px;
  border-left: 3px solid transparent;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
  color: var(--quiet-blue);
  cursor: pointer;
  transition: color 320ms cubic-bezier(.2,.7,.2,1), border-color 320ms cubic-bezier(.2,.7,.2,1);
}

.page-news .news-tag-link:hover {
  color: var(--paper);
  border-left-color: var(--magenta);
}

.page-news .news-index__aside .aside-note {
  margin: var(--gap-md) 0 0;
  font-size: var(--fs-1);
  line-height: 1.7;
  color: var(--quiet-blue);
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-xs);
}

.page-news .filter-chip {
  padding: 7px 14px;
  border: 1px solid var(--ink-line);
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
  color: var(--quiet-blue);
  cursor: pointer;
  transition: color 280ms cubic-bezier(.2,.7,.2,1), border-color 280ms cubic-bezier(.2,.7,.2,1), background-color 280ms cubic-bezier(.2,.7,.2,1);
}

.page-news .filter-chip:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

/* 条目 */
.page-news .news-entry-list {
  display: block;
  margin-top: var(--gap-md);
  border-top: var(--news-rule);
}

.page-news .news-entry {
  border-bottom: var(--news-hair);
}

.page-news .news-entry:nth-child(5n) {
  border-bottom: 3px solid var(--ink-line);
}

.page-news .news-entry__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px var(--gap-sm);
  align-items: baseline;
  padding: var(--gap-md) var(--gap-sm) var(--gap-md) var(--gap-sm);
  cursor: pointer;
  list-style: none;
  transition: background-color 320ms cubic-bezier(.2,.7,.2,1);
}

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

.page-news .news-entry__head:hover {
  background: var(--ink-deep);
}

.page-news .news-entry__issue {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--warm-gold);
}

.page-news .news-entry__title {
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .news-entry__chip {
  justify-self: start;
  white-space: nowrap;
  padding: 3px 10px;
  border: 1px solid var(--neon-cyan);
  border-radius: 999px;
  font-size: var(--fs-1);
  color: var(--neon-cyan);
}

.page-news .news-entry__body {
  padding: 0 var(--gap-sm) var(--gap-md) var(--gap-sm);
  border-left: 3px solid var(--magenta);
  margin-left: var(--gap-sm);
}

.page-news .news-entry__body p {
  margin: 0 0 var(--gap-sm);
  max-width: 72ch;
  font-size: var(--fs-2);
  line-height: 1.85;
  color: var(--quiet-blue);
}

.page-news .news-entry__body .news-entry__when {
  margin: var(--gap-sm) 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  color: var(--warm-gold);
}

.page-news .news-entry[open] .news-entry__head {
  background: var(--ink-deep);
}

.page-news .news-entry[open] .news-entry__title {
  color: var(--neon-cyan);
}

/* 纯 CSS 筛选 */
.page-news #tag-stats:checked ~ .news-index__split .filter-view .news-entry:not([data-tag="stats"]),
.page-news #tag-seg:checked ~ .news-index__split .filter-view .news-entry:not([data-tag="seg"]),
.page-news #tag-cat:checked ~ .news-index__split .filter-view .news-entry:not([data-tag="cat"]),
.page-news #tag-ver:checked ~ .news-index__split .filter-view .news-entry:not([data-tag="ver"]) {
  display: none;
}

.page-news #tag-stats:checked ~ .news-index__split .filter-chip[data-for="stats"],
.page-news #tag-seg:checked ~ .news-index__split .filter-chip[data-for="seg"],
.page-news #tag-cat:checked ~ .news-index__split .filter-chip[data-for="cat"],
.page-news #tag-ver:checked ~ .news-index__split .filter-chip[data-for="ver"] {
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  color: var(--ink-night);
}

.page-news #tag-stats:checked ~ .news-index__split .news-tag-link[data-for="stats"],
.page-news #tag-seg:checked ~ .news-index__split .news-tag-link[data-for="seg"],
.page-news #tag-cat:checked ~ .news-index__split .news-tag-link[data-for="cat"],
.page-news #tag-ver:checked ~ .news-index__split .news-tag-link[data-for="ver"] {
  color: var(--neon-cyan);
  border-left-color: var(--neon-cyan);
}

.page-news #tag-stats:focus-visible ~ .news-index__split .filter-chip[data-for="stats"],
.page-news #tag-seg:focus-visible ~ .news-index__split .filter-chip[data-for="seg"],
.page-news #tag-cat:focus-visible ~ .news-index__split .filter-chip[data-for="cat"],
.page-news #tag-ver:focus-visible ~ .news-index__split .filter-chip[data-for="ver"] {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* ---------- 分段轴 ---------- */
.page-news .news-segments {
  background: var(--ink-deep);
  border-top: var(--news-rule);
  border-bottom: var(--news-rule);
}

.page-news .news-segments__head {
  max-width: 66ch;
  margin-bottom: var(--gap-lg);
}

.page-news .news-segments__head p {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.85;
  color: var(--quiet-blue);
}

.page-news .news-segbar {
  display: flex;
  height: 76px;
  background: var(--ink-night);
  border: var(--news-rule);
  box-shadow: var(--shadow-brut);
  overflow: hidden;
}

.page-news .news-segbar__seg {
  flex: var(--seg, 1) 1 0;
  min-width: 0;
  position: relative;
  border-right: var(--news-hair);
}

.page-news .news-segbar__seg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--seg-top, transparent), transparent 78%);
}

.page-news .news-segbar__seg:nth-child(1) {
  --seg-top: rgba(53, 224, 214, 0.42);
}

.page-news .news-segbar__seg:nth-child(2) {
  --seg-top: rgba(53, 224, 214, 0.26);
}

.page-news .news-segbar__seg:nth-child(3) {
  --seg-top: rgba(242, 179, 61, 0.28);
}

.page-news .news-segbar__seg:nth-child(4) {
  --seg-top: rgba(255, 61, 139, 0.32);
  border-right: 0;
}

.page-news .news-segbar__legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-xs) var(--gap-md);
  list-style: none;
  margin: var(--gap-sm) 0 var(--gap-lg);
  padding: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
  color: var(--warm-gold);
}

/* ---------- 分类节奏图解 ---------- */
.page-news .news-diagram__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-lg);
  align-items: center;
}

.page-news .news-diagram__text p {
  margin: 0 0 var(--gap-md);
  max-width: 62ch;
  font-size: var(--fs-2);
  line-height: 1.85;
  color: var(--quiet-blue);
}

.page-news .news-diagram__link a {
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  color: var(--neon-cyan);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

/* ---------- 栏目标签体系 ---------- */
.page-news .news-taxonomy__intro {
  margin: 0;
  max-width: 68ch;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--quiet-blue);
}

.page-news .news-taxonomy__list {
  list-style: none;
  margin: var(--gap-lg) 0 0;
  padding: 0;
  border-top: var(--news-rule);
}

.page-news .news-taxonomy__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--gap-sm) var(--gap-md);
  align-items: baseline;
  padding: var(--gap-md) 0;
  border-bottom: var(--news-hair);
}

.page-news .news-taxonomy__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-4);
  color: var(--retro-orange);
}

.page-news .news-taxonomy__row h3 {
  margin: 0 0 6px;
  font-size: var(--fs-3);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-news .news-taxonomy__row p {
  margin: 0;
  max-width: 64ch;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--quiet-blue);
}

.page-news .news-taxonomy__cadence {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
  color: var(--neon-cyan);
}

/* ---------- 观察方法 ---------- */
.page-news .news-method__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-lg);
  align-items: start;
}

.page-news .news-method__body {
  padding: var(--gap-lg);
  background: var(--paper);
  border: var(--news-rule);
  box-shadow: var(--shadow-brut);
}

.page-news .news-method__body .panel__label {
  display: block;
  margin: 0 0 var(--gap-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.12em;
  color: var(--retro-orange);
}

.page-news .news-method__body .panel__title {
  margin: 0 0 var(--gap-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-5);
  line-height: 1.2;
  color: var(--body-ink);
}

.page-news .news-method__body p {
  margin: 0 0 var(--gap-md);
  max-width: 66ch;
  font-size: var(--fs-2);
  line-height: 1.85;
  color: var(--body-ink);
}

.page-news .news-method__more {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
}

.page-news .news-method__more a {
  color: var(--body-ink);
  text-decoration: underline;
  text-decoration-color: var(--retro-orange);
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

/* ---------- 线索与投稿 ---------- */
.page-news .news-submit__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-md);
  padding: var(--gap-lg);
  background: var(--ink-deep);
  border: var(--news-rule);
  box-shadow: var(--shadow-brut);
}

.page-news .news-submit__panel p {
  margin: 0;
  max-width: 66ch;
  font-size: var(--fs-2);
  line-height: 1.8;
  color: var(--quiet-blue);
}

.page-news .news-submit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-sm);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .news-entry__head {
    grid-template-columns: 92px minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--gap-md);
    padding-left: 0;
  }

  .page-news .news-entry__issue {
    grid-column: auto;
  }

  .page-news .news-entry__body {
    margin-left: 92px;
    padding-left: var(--gap-md);
  }
}

@media (min-width: 780px) {
  .page-news .news-taxonomy__row {
    grid-template-columns: 72px minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-news .news-taxonomy__cadence {
    grid-column: 3;
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-news .news-brief__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--gap-xl);
  }

  .page-news .news-diagram__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--gap-xl);
  }

  .page-news .news-method__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--gap-xl);
  }
}

@media (min-width: 960px) {
  .page-news .news-index__split {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: var(--gap-xl);
  }

  .page-news .news-index__aside {
    position: sticky;
    top: calc(var(--header-h) + var(--gap-md));
    align-self: start;
  }

  .page-news .news-submit__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--gap-xl);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition: none !important;
    animation: none !important;
  }
}

.page-news {
  --seg: transparent;
}