.page-news {
  --news-rail-w: 292px;
  --news-line: rgba(138, 147, 172, 0.3);
  --news-panel: rgba(34, 16, 70, 0.45);
  --news-shadow: 6px 6px 0 var(--black);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-news .news-masthead {
  position: relative;
  padding-top: 26px;
}
.page-news .news-masthead::before {
  content: "";
  position: absolute;
  inset: -40px -60px 0;
  background:
    radial-gradient(720px 340px at 78% 0%, rgba(18, 225, 195, 0.17), transparent 70%),
    radial-gradient(600px 300px at 4% 22%, rgba(255, 122, 26, 0.13), transparent 72%);
  pointer-events: none;
  z-index: 0;
}
.page-news .news-masthead > .container {
  position: relative;
  z-index: 1;
}
.page-news .news-masthead__grid {
  display: grid;
  gap: 30px;
  align-items: end;
}
.page-news .news-masthead h1 {
  margin: 14px 0 18px;
  font-size: clamp(34px, 7.2vw, 66px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-news .news-masthead .lede {
  max-width: 34em;
  font-size: 17px;
  line-height: 1.72;
  color: var(--text);
}
.page-news .news-masthead .cluster {
  margin-top: 24px;
}
.page-news .news-masthead__figure {
  margin: 0;
  border: 3px solid var(--teal);
  box-shadow: 8px 8px 0 var(--black);
}
.page-news .news-masthead__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-news .media-frame__caption {
  padding: 8px 2px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

/* ---------- 专栏导览 ---------- */
.page-news .news-guide h2 {
  margin: 10px 0 0;
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.page-news .news-guide__grid {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}
.page-news .news-guide__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border: 2px solid var(--news-line);
  background: var(--news-panel);
  transition: border-color var(--dur-mid) var(--ease),
              box-shadow var(--dur-mid) var(--ease),
              transform var(--dur-mid) var(--ease);
}
.page-news .news-guide__item:hover,
.page-news .news-guide__item:focus-within {
  border-color: var(--teal);
  box-shadow: var(--news-shadow);
  transform: translate(-2px, -2px);
}
.page-news .news-guide__item .idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}
.page-news .news-guide__item h3 {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.2;
}
.page-news .news-guide__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(232, 236, 245, 0.78);
}
.page-news .news-guide__jump {
  margin-top: auto;
  padding-top: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  align-self: flex-start;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-news .news-guide__jump:hover,
.page-news .news-guide__jump:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 左索引 + 右列表 ---------- */
.page-news .news-split__grid {
  display: grid;
  gap: 34px;
}
.page-news .news-rail {
  border-top: 3px solid var(--orange);
  padding-top: 16px;
}
.page-news .news-rail__title {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--slate);
}
.page-news .news-rail__list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}
.page-news .news-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}
.page-news .news-rail__list a .idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}
.page-news .news-rail__list a:hover,
.page-news .news-rail__list a:focus-visible,
.page-news .news-rail__list a[aria-current="true"] {
  border-left-color: var(--teal);
  background: rgba(18, 225, 195, 0.09);
  color: #ffffff;
}
.page-news .news-rail__meta {
  margin-top: 22px;
  padding: 16px;
  border: 2px solid var(--news-line);
  display: grid;
  gap: 8px;
}
.page-news .news-rail__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate);
}
.page-news .news-rail__note .mono {
  color: var(--teal);
  font-weight: 700;
}

.page-news .news-feed__head h2 {
  margin: 10px 0 22px;
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.page-news .news-list {
  display: grid;
  gap: 14px;
}
.page-news .news-item {
  border: 2px solid var(--news-line);
  background: rgba(11, 16, 38, 0.72);
  transition: border-color var(--dur-mid) var(--ease),
              box-shadow var(--dur-mid) var(--ease);
}
.page-news .news-item:hover {
  border-color: var(--teal);
  box-shadow: var(--news-shadow);
}
.page-news .news-item[open] {
  border-color: var(--orange);
}
.page-news .news-item > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}
.page-news .news-item > summary::-webkit-details-marker {
  display: none;
}
.page-news .news-item > summary:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: -3px;
}
.page-news .news-item__time {
  flex: 0 0 72px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
}
.page-news .news-item__title {
  flex: 1 1 300px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}
.page-news .news-item__tags {
  flex: 0 0 auto;
  margin-left: auto;
}
.page-news .news-item__excerpt {
  margin: 0;
  padding: 0 18px 18px;
  max-width: 62em;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(232, 236, 245, 0.78);
}

/* ---------- 专题系列 ---------- */
.page-news .news-series {
  padding-top: 92px;
  background: linear-gradient(180deg, rgba(34, 16, 70, 0.78) 0%, rgba(11, 16, 38, 0) 58%);
  clip-path: polygon(0 44px, 100% 0, 100% 100%, 0 100%);
}
.page-news .news-series h2 {
  margin: 10px 0 0;
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.page-news .news-series__list {
  margin-top: 30px;
  display: grid;
  gap: 32px;
}
.page-news .news-series__item {
  display: grid;
  gap: 20px;
  padding: 20px;
  border: 3px solid var(--news-line);
  background: rgba(11, 16, 38, 0.62);
}
.page-news .news-series__figure {
  margin: 0;
  border: 2px solid var(--teal-soft);
  overflow: hidden;
  background: var(--violet);
}
.page-news .news-series__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news .news-series__figure.media-frame--square img { aspect-ratio: 1 / 1; }
.page-news .news-series__figure.media-frame--wide img { aspect-ratio: 7 / 4; }
.page-news .news-series__figure.media-frame--tall img { aspect-ratio: 3 / 4; }

.page-news .news-series__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-news .news-series__body .idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}
.page-news .news-series__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}
.page-news .news-series__body h3 {
  margin: 0;
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.page-news .news-series__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(232, 236, 245, 0.8);
}
.page-news .news-series__body .punch {
  margin-top: 4px;
}
.page-news .news-series__body .tag {
  align-self: flex-start;
}
.page-news .news-series__link {
  align-self: flex-start;
  margin-top: 2px;
  font-size: 13px;
  font-weight: 700;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-news .news-series__link:hover,
.page-news .news-series__link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 新访客先读 ---------- */
.page-news .news-starter {
  color: var(--ink);
}
.page-news .news-starter .section-label {
  color: var(--violet);
}
.page-news .news-starter h2 {
  margin: 10px 0 0;
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-news .news-starter__list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-news .news-starter__item {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-top: 2px solid rgba(11, 16, 38, 0.16);
}
.page-news .news-starter__item:last-child {
  border-bottom: 2px solid rgba(11, 16, 38, 0.16);
}
.page-news .news-starter__item .idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}
.page-news .news-starter__item h3 {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}
.page-news .news-starter__item p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.7;
  color: #3d4662;
}
.page-news .news-starter__link {
  justify-self: start;
  font-size: 13px;
  font-weight: 700;
  color: var(--violet);
  text-decoration: none;
  border-bottom: 2px solid var(--orange-soft);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-news .news-starter__link:hover,
.page-news .news-starter__link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 更新与归档 ---------- */
.page-news .news-archive__grid {
  display: grid;
  gap: 30px;
}
.page-news .news-archive__lead h2 {
  margin: 10px 0 16px;
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.page-news .news-archive__lead p {
  margin: 0 0 16px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(232, 236, 245, 0.82);
}
.page-news .news-archive__lead .btn {
  margin-top: 8px;
}
.page-news .news-archive__stats {
  margin: 0;
  border-top: 3px solid var(--orange);
}
.page-news .news-archive__stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 2px;
  border-bottom: 2px dashed var(--news-line);
}
.page-news .news-archive__stat dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--slate);
}
.page-news .news-archive__stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--teal);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .news-guide__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .news-item__excerpt {
    padding-left: 106px;
  }
  .page-news .news-starter__item {
    grid-template-columns: 64px minmax(0, 1fr);
    align-items: start;
    gap: 4px 20px;
  }
  .page-news .news-starter__link {
    grid-column: 2;
  }
}

@media (min-width: 900px) {
  .page-news .news-item:nth-child(3n + 2) {
    width: 88%;
  }
  .page-news .news-item:nth-child(3n + 3) {
    width: 94%;
    margin-left: 6%;
  }
  .page-news .news-archive__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-news .news-masthead__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: 48px;
  }
  .page-news .news-series__item {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 34px;
    padding: 26px;
    align-items: start;
  }
  .page-news .news-series__item:nth-child(even) .news-series__figure {
    order: 2;
  }
  .page-news .news-guide__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-news .news-split__grid {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
  .page-news .news-rail {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-guide__item,
  .page-news .news-item,
  .page-news .news-guide__jump,
  .page-news .news-rail__list a,
  .page-news .news-series__link,
  .page-news .news-starter__link {
    transition: none;
  }
  .page-news .news-guide__item:hover,
  .page-news .news-guide__item:focus-within {
    transform: none;
  }
}