.page-news {
  --news-line: 1px solid var(--ink-600);
  --news-line-paper: 1px solid rgba(100, 116, 139, 0.3);
  --news-ghost: rgba(59, 227, 220, 0.3);
}

/* ---------- 首屏 ---------- */

.page-news .news-lead {
  display: grid;
  gap: 20px;
  margin-top: 24px;
}

.page-news .news-lead__rail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.page-news .news-lead__dots {
  width: 8px;
  height: 96px;
  background-image: radial-gradient(var(--cyan-400) 1.5px, transparent 1.6px);
  background-size: 8px 18px;
  opacity: 0.55;
}

.page-news .news-lead__main {
  min-width: 0;
}

.page-news .news-lead__main h1 {
  margin: 14px 0 0;
  font-size: clamp(1.9rem, 6.4vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-news .news-lead__main .lede {
  margin: 18px 0 0;
  max-width: 62ch;
}

.page-news .news-lead__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 条目流 ---------- */

.page-news .news-feed__head {
  margin-bottom: 22px;
}

.page-news .news-feed__title {
  margin: 0;
  font-size: clamp(1.25rem, 2.6vw, 1.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-news .news-feed__note {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 14px 0;
  border-top: var(--news-line);
  border-bottom: var(--news-line);
  margin-bottom: 8px;
}

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

.page-news .filter__btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--ink-600);
  color: var(--slate-300);
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.06em;
  padding: 7px 14px;
  cursor: pointer;
  border-radius: 0;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-news .filter__btn:hover {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
}

.page-news .filter__btn[aria-pressed="true"],
.page-news .filter__btn.is-active {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  color: var(--ink-950);
  font-weight: 700;
}

.page-news .filter__btn:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 2px;
}

.page-news .filter__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate-300);
}

.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .news-item {
  position: relative;
  min-width: 0;
  padding: 26px 0 26px 16px;
  border-left: 1px solid var(--ink-600);
  border-bottom: var(--news-line);
}

.page-news .news-item:last-child {
  border-bottom: none;
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 1px;
  background: var(--cyan-400);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s var(--ease);
}

.page-news .news-item:hover::before,
.page-news .news-item:focus-within::before {
  transform: scaleY(1);
}

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

.page-news .news-item__no {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4.6vw, 2.9rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--news-ghost);
  margin-bottom: 8px;
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-news .news-item__when {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--slate-300);
}

.page-news .news-item__title {
  margin: 0;
  font-size: clamp(1.1rem, 2.6vw, 1.45rem);
  font-weight: 800;
  line-height: 1.36;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-news .news-item__sum {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-news .news-item__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--cyan-400);
  text-decoration: none;
}

.page-news .news-item__more span {
  transition: transform 0.3s var(--ease);
}

.page-news .news-item__more:hover span {
  transform: translateX(4px);
}

.page-news .news-item--top {
  border-left-color: var(--cyan-400);
}

.page-news .news-item--top .news-item__grid {
  display: grid;
  gap: 24px;
}

.page-news .news-item--top .news-item__title {
  font-size: clamp(1.5rem, 4.6vw, 2.7rem);
  line-height: 1.18;
}

.page-news .news-item__figure {
  margin: 0;
  min-width: 0;
}

/* ---------- 通用区块头 ---------- */

.page-news .news-sec-head {
  max-width: 780px;
  margin-bottom: 30px;
}

.page-news .news-sec-head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper-100);
}

.page-news .news-sec-lede {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--slate-300);
}

.page-news .news-sec-head--paper h2 {
  color: var(--ink-950);
}

.page-news .news-sec-head--paper .news-sec-lede {
  color: var(--slate-600);
}

.page-news .news-sec-head--paper .kicker {
  color: var(--cyan-700);
}

/* ---------- 版本迭代 ---------- */

.page-news .news-version-grid {
  display: grid;
  gap: 30px;
}

.page-news .news-version-fig {
  margin: 0;
  min-width: 0;
}

.page-news .version-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .version-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 18px;
  padding: 20px 0;
  border-top: var(--news-line);
}

.page-news .version-row:last-child {
  border-bottom: var(--news-line);
}

.page-news .version-row__no {
  font-size: clamp(1.6rem, 4.4vw, 2.5rem);
  line-height: 1;
  color: var(--cyan-400);
  letter-spacing: -0.03em;
}

.page-news .version-row__main {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
}

.page-news .version-row__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper-100);
}

.page-news .version-row__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

/* ---------- 栏目上新 ---------- */

.page-news .news-columns {
  display: grid;
  gap: 30px;
}

.page-news .news-columns__fig {
  margin: 0;
  min-width: 0;
}

.page-news .news-columns__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .news-columns__list li {
  padding: 18px 0;
  border-top: var(--news-line);
}

.page-news .news-columns__list li:last-child {
  border-bottom: var(--news-line);
}

.page-news .news-columns__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper-100);
}

.page-news .news-columns__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--slate-300);
}

/* ---------- 内容节奏（暖纸底） ---------- */

.page-news .rhythm-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .rhythm-item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-top: var(--news-line-paper);
}

.page-news .rhythm-item:last-child {
  border-bottom: var(--news-line-paper);
}

.page-news .rhythm-item__phase {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--cyan-700);
}

.page-news .rhythm-item__body {
  min-width: 0;
}

.page-news .rhythm-item h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink-950);
}

.page-news .rhythm-item p {
  margin: 8px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-600);
}

/* ---------- 编辑手记 ---------- */

.page-news .news-notes {
  display: grid;
  gap: 30px;
}

.page-news .news-notes__list {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-news .note-card {
  margin: 0;
  padding: 20px 22px;
  border-left: 2px solid var(--orange-500);
  background: var(--ink-800);
}

.page-news .note-card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--paper-100);
}

.page-news .note-card footer {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--slate-300);
}

.page-news .news-notes__fig {
  margin: 0;
  min-width: 0;
}

/* ---------- 往期回看 ---------- */

.page-news .news-archive {
  display: grid;
  gap: 32px;
}

.page-news .news-archive__head {
  min-width: 0;
}

.page-news .news-archive__head h2 {
  margin: 12px 0 0;
  color: var(--paper-100);
}

.page-news .news-archive__lede {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--slate-300);
}

.page-news .news-archive__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-news .news-coord {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 227, 220, 0.35);
}

.page-news .news-coord::before {
  content: "◀";
  font-size: 9px;
}

.page-news .news-archive__groups {
  min-width: 0;
}

.page-news .news-archive__group {
  border-top: var(--news-line);
}

.page-news .news-archive__group:last-child {
  border-bottom: var(--news-line);
}

.page-news .news-archive__group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--paper-100);
}

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

.page-news .news-archive__group summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-news .news-archive__group[open] summary::after {
  content: "−";
}

.page-news .news-archive__group .note-list {
  margin: 0 0 18px;
  padding-bottom: 4px;
}

.page-news .news-archive__group .note-list__item {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

/* ---------- 图片兜底 ---------- */

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

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-news .news-item {
    padding: 30px 0 30px 24px;
  }

  .page-news .rhythm-item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 8px 22px;
  }

  .page-news .rhythm-item__phase {
    padding-top: 4px;
  }
}

@media (min-width: 900px) {
  .page-news .news-lead {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 40px;
    margin-top: 36px;
  }

  .page-news .news-lead__dots {
    height: 190px;
  }

  .page-news .news-sec-head {
    margin-bottom: 40px;
  }

  .page-news .news-version-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-columns {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-notes {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-archive {
    grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-news .news-item--top .news-item__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 40px;
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-news .news-list > .news-item:nth-child(3) {
    padding-left: 48px;
  }

  .page-news .news-list > .news-item:nth-child(5) {
    padding-left: 76px;
  }

  .page-news .news-list > .news-item:nth-child(7) {
    padding-left: 104px;
  }
}

@media (max-width: 699px) {
  .page-news .news-br {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item::before,
  .page-news .news-item__more span,
  .page-news .filter__btn {
    transition: none;
  }

  .page-news .news-item::before {
    transform: scaleY(1);
    background: var(--ink-600);
  }

  .page-news .news-item__more:hover span {
    transform: none;
  }
}