/* ============================================================
   专题中心 / page-news
   ============================================================ */

.page-news {
  --news-rad: 3px;
  --news-fig-gap: 30px;
}

.page-news section[id] {
  scroll-margin-top: calc(var(--head-h) + 12px);
}

/* ---------------- 首屏 ---------------- */

.page-news .news-hero {
  position: relative;
  padding: 22px 0 40px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-news .news-hero__glow {
  position: absolute;
  top: -180px;
  right: -140px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle at center, rgba(53, 224, 214, 0.2) 0%, rgba(53, 224, 214, 0) 68%);
  pointer-events: none;
}

.page-news .news-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-news .news-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 31px;
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-news .news-hero__title span {
  display: block;
}

.page-news .news-hero__title .is-accent {
  color: var(--cyan);
}

.page-news .news-hero__lead {
  margin: 18px 0 0;
  max-width: 32em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--slate);
}

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

/* 首屏侧栏：本期一览 */

.page-news .news-side {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--news-rad);
  box-shadow: var(--shadow-soft);
}

.page-news .news-side__title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--cyan-soft);
}

.page-news .news-side__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-news .news-side__row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 10px;
}

.page-news .news-side__key {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-news .news-side__val {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------------- 章节索引 ---------------- */

.page-news .sec-index {
  position: sticky;
  top: var(--head-h);
  z-index: 5;
  background: rgba(11, 27, 43, 0.94);
  border-bottom: 1px solid var(--line);
}

.page-news .sec-index__inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-news .sec-index__inner::-webkit-scrollbar {
  display: none;
}

.page-news .sec-index__link {
  flex: 0 0 auto;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  color: var(--slate);
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-news .sec-index__link:hover,
.page-news .sec-index__link:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--cyan);
}

.page-news .sec-index__link[data-active] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------------- 通用章节 ---------------- */

.page-news .news-sec {
  position: relative;
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .news-sec:last-of-type {
  border-bottom: 0;
}

.page-news .news-sec__head {
  max-width: 58ch;
  margin-bottom: 28px;
}

.page-news .news-sec__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 23px;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-news .news-sec__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------------- 本期导览 ---------------- */

.page-news .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news .toc-list__item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.page-news .toc-list__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-news .toc-list__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .toc-list__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

/* ---------------- 图框 ---------------- */

.page-news .news-fig {
  margin: var(--news-fig-gap) 0 0;
}

.page-news .frame--21x9 img,
.page-news .frame--16x9 img,
.page-news .frame--4x3 img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------------- 四类栏目 ---------------- */

.page-news .cat-list {
  display: grid;
  gap: 0;
}

.page-news .cat {
  display: grid;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.page-news .cat:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .cat__aside {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-news .cat__tag {
  justify-self: start;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.06em;
  color: var(--cyan-soft);
}

.page-news .cat__tag--b {
  color: var(--cyan);
  border-color: rgba(53, 224, 214, 0.5);
}

.page-news .cat__tag--c {
  color: var(--orange);
  border-color: rgba(255, 138, 61, 0.55);
}

.page-news .cat__tag--d {
  color: var(--slate);
  border-color: var(--line);
}

.page-news .cat__for {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-news .cat__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-news .cat__items li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
}

.page-news .cat__items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

/* ---------------- 往期回看 ---------------- */

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

.page-news .archive__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 10px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-news .archive__row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-news .archive__no {
  grid-column: 1;
  grid-row: 1 / 3;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--slate);
}

.page-news .archive__body {
  grid-column: 2;
  grid-row: 1;
}

.page-news .archive__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .archive__sum {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

.page-news .archive__when {
  grid-column: 2;
  grid-row: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-news .archive__row--now .archive__no {
  color: var(--cyan);
}

.page-news .archive__row--now .archive__title {
  color: var(--cyan-soft);
}

.page-news .archive__row--now .archive__when {
  color: var(--orange);
}

/* ---------------- 更新节奏 ---------------- */

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

.page-news .cadence__item {
  position: relative;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-news .cadence__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .cadence__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--slate);
}

/* ---------------- 读者追问 ---------------- */

.page-news .qa {
  display: grid;
  gap: 18px;
}

.page-news .qa__item {
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange-deep);
  border-radius: var(--news-rad);
}

.page-news .qa__q {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .qa__a {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

/* ---------------- 动手用起来 ---------------- */

.page-news .apply {
  display: grid;
  gap: 34px;
}

.page-news .apply__main .news-sec__title {
  margin-top: 10px;
}

.page-news .apply__text {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-news .apply__links {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .apply__links a {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--news-rad);
  text-decoration: none;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-news .apply__links a:hover,
.page-news .apply__links a:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 224, 214, 0.07);
}

.page-news .apply__arw {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--cyan);
}

.page-news .apply__links strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
}

.page-news .apply__links em {
  display: block;
  margin-top: 2px;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--slate);
}

.page-news .apply__fig {
  align-self: start;
}

/* ---------------- 自适应 ---------------- */

@media (min-width: 640px) {
  .page-news .news-hero__title {
    font-size: 40px;
  }

  .page-news .news-hero__lead {
    font-size: 17px;
  }

  .page-news .news-sec__title {
    font-size: 26px;
  }

  .page-news .toc-list__item {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 18px;
  }
}

@media (min-width: 820px) {
  .page-news .archive__row {
    grid-template-columns: 86px minmax(0, 1fr) 92px;
    column-gap: 32px;
    align-items: baseline;
    padding: 22px 0;
  }

  .page-news .archive__no {
    grid-column: 1;
    grid-row: 1;
    font-size: 26px;
  }

  .page-news .archive__body {
    grid-column: 2;
    grid-row: 1;
  }

  .page-news .archive__when {
    grid-column: 3;
    grid-row: 1;
    text-align: right;
  }

  .page-news .cat {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 34px;
    padding: 28px 0;
  }

  .page-news .qa {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 1024px) {
  .page-news .news-hero {
    padding: 34px 0 54px;
  }

  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.6fr);
    gap: 56px;
    align-items: start;
  }

  .page-news .news-hero__title {
    font-size: 52px;
  }

  .page-news .news-sec {
    padding: 62px 0;
  }

  .page-news .news-sec__head {
    margin-bottom: 34px;
  }

  .page-news .news-sec__title {
    font-size: 32px;
  }

  .page-news .toc-list__item {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 20px 0;
  }

  .page-news .toc-list__title {
    font-size: 18px;
  }

  .page-news .cadence {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .cadence__item {
    padding: 28px 24px 0 0;
  }

  .page-news .cadence__item::before {
    content: "";
    position: absolute;
    left: 0;
    top: -4.5px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ink);
    border: 1px solid var(--cyan);
  }

  .page-news .apply {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
    gap: 52px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .sec-index__link,
  .page-news .apply__links a {
    transition: none;
  }
}