.page-news {
  --news-gap: 28px;
  --news-rail-w: 232px;
  --news-max: 1240px;
  background:
    radial-gradient(120% 60% at 8% 0%, rgba(58, 42, 90, .38) 0%, rgba(26, 15, 46, 0) 62%),
    var(--c-purple);
  color: var(--c-white);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  isolation: isolate;
  padding: 108px 0 60px;
  overflow: hidden;
}

.page-news .news-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-news .news-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% 40%;
  opacity: .26;
  filter: saturate(.72);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(11, 8, 18, .74) 0%, rgba(26, 15, 46, .55) 46%, rgba(26, 15, 46, .96) 100%),
    linear-gradient(102deg, rgba(11, 8, 18, .86) 0%, rgba(11, 8, 18, .18) 58%, rgba(201, 162, 75, .12) 100%);
}

.page-news .news-hero__inner {
  position: relative;
}

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

.page-news .news-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--c-white);
  max-width: 15ch;
  margin: 14px 0 0;
}

.page-news .news-hero__lede {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--c-grey);
}

.page-news .news-hero__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-hero__tabs .tag {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(36, 22, 64, .62);
  color: var(--c-grey);
  font-size: 13px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: border-color var(--dur) ease, color var(--dur) ease, background var(--dur) ease;
}

.page-news .news-hero__tabs .tag:hover,
.page-news .news-hero__tabs .tag:focus-visible {
  border-color: var(--c-gold);
  color: var(--c-gold-lite);
  background: rgba(201, 162, 75, .1);
}

.page-news .news-hero__tabs .tag--gold {
  border-color: rgba(201, 162, 75, .6);
  color: var(--c-gold-lite);
}

/* ---------- 主体骨架 ---------- */
.page-news .news-body {
  padding: 12px 0 96px;
}

.page-news .news-body .grid--aside {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

/* ---------- 左侧系列索引 ---------- */
.page-news .news-rail {
  display: none;
}

.page-news .news-rail__label {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--c-gold);
  margin: 0 0 18px;
  text-transform: uppercase;
}

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

.page-news .news-rail .rail__item {
  position: relative;
  padding-left: 20px;
}

.page-news .news-rail .rail__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-line);
  transition: background var(--dur) ease, box-shadow var(--dur) ease;
}

.page-news .news-rail .rail__item::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 21px;
  bottom: -14px;
  width: 1px;
  background: var(--c-line);
}

.page-news .news-rail .rail__item:last-child::after {
  display: none;
}

.page-news .news-rail .rail__link {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  color: var(--c-grey);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.page-news .news-rail .rail__link:hover,
.page-news .news-rail .rail__link:focus-visible {
  color: var(--c-white);
}

.page-news .news-rail .rail__link.is-active {
  color: var(--c-gold-lite);
  font-weight: 600;
}

.page-news .news-rail .rail__item:has(.rail__link.is-active)::before {
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 75, .16);
}

.page-news .news-rail__foot {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.85;
  color: var(--c-grey);
}

.page-news .news-rail__foot a {
  color: var(--c-gold-lite);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 75, .42);
}

.page-news .news-rail__foot a:hover,
.page-news .news-rail__foot a:focus-visible {
  border-color: var(--c-gold);
}

/* ---------- 章节 ---------- */
.page-news .news-section {
  padding: 26px 0 8px;
  scroll-margin-top: 84px;
}

.page-news .news-section + .news-section {
  margin-top: 52px;
  padding-top: 44px;
  border-top: 1px solid rgba(58, 42, 90, .7);
}

.page-news .news-section .section__head {
  margin-bottom: 30px;
}

.page-news .news-section .section-title {
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--c-white);
  margin: 10px 0 0;
  max-width: 22ch;
}

.page-news .news-section .section-lede {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-grey);
}

/* ---------- 文章卡片 ---------- */
.page-news .column-card {
  border: 1px solid var(--c-line);
  border-radius: var(--rad);
  background: linear-gradient(168deg, rgba(36, 22, 64, .96) 0%, rgba(26, 15, 46, .92) 100%);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform var(--dur) ease, border-color var(--dur) ease;
}

.page-news .column-card:hover {
  transform: translateY(-4px);
  border-color: rgba(201, 162, 75, .48);
}

.page-news .column-card__body {
  padding: 22px 22px 24px;
}

.page-news .column-card--lead {
  margin-bottom: 22px;
}

.page-news .column-card--lead .column-card__body {
  padding: 24px 22px 28px;
}

.page-news .column-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .06em;
}

.page-news .column-card__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.42;
  letter-spacing: -.005em;
  color: var(--c-white);
  margin: 0 0 10px;
}

.page-news .column-card--lead .column-card__title {
  font-size: clamp(21px, 2.8vw, 29px);
  max-width: 24ch;
}

.page-news .column-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--c-grey);
}

.page-news .column-card__text + .column-card__text {
  margin-top: 12px;
}

.page-news .column-card__media {
  border-bottom: 1px solid var(--c-line);
}

.page-news .column-card__media .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .column-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

/* ---------- 分类观察 ---------- */
.page-news .observe-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-news .observe-figure {
  margin: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--rad);
  overflow: hidden;
  background: rgba(11, 8, 18, .7);
}

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

.page-news .observe-figure .media-frame__caption,
.page-news .scene-figure .media-frame__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--c-line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--c-grey);
}

.page-news .observe-notes {
  display: grid;
  gap: 20px;
}

.page-news .observe-note {
  position: relative;
  padding-left: 18px;
  border-left: 2px solid rgba(201, 162, 75, .32);
}

.page-news .observe-note__title {
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-white);
  margin: 0 0 8px;
}

.page-news .observe-note__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.86;
  color: var(--c-grey);
}

.page-news .cloud-wrap {
  margin-top: 32px;
  padding: 22px 20px;
  border: 1px dashed rgba(58, 42, 90, .9);
  border-radius: var(--rad);
  background: rgba(11, 8, 18, .42);
}

.page-news .cloud-wrap__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-grey);
}

.page-news .cloud-wrap__list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .cloud-tag {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--c-grey);
  border-color: rgba(58, 42, 90, .95);
}

.page-news .cloud-tag--lg {
  font-size: 14px;
  color: var(--c-gold-lite);
  border-color: rgba(201, 162, 75, .45);
}

/* ---------- 帮助更新 ---------- */
.page-news .update-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-news .update-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-news .update-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .06em;
}

.page-news .update-item__title {
  font-family: var(--font-display);
  font-size: clamp(16.5px, 2vw, 20px);
  line-height: 1.48;
  color: var(--c-white);
  margin: 0 0 8px;
}

.page-news .update-item__text {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.86;
  color: var(--c-grey);
}

.page-news .news-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 用户场景 ---------- */
.page-news .scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-news .scene-card {
  position: relative;
  padding: 24px 22px 26px;
  border: 1px solid var(--c-line);
  border-radius: var(--rad);
  background: linear-gradient(150deg, rgba(26, 15, 46, .9) 0%, rgba(11, 8, 18, .82) 100%);
  transition: border-color var(--dur) ease, transform var(--dur) ease;
}

.page-news .scene-card:hover {
  transform: translateY(-4px);
  border-color: rgba(201, 162, 75, .42);
}

.page-news .scene-card__num {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--c-gold);
}

.page-news .scene-card__title {
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.5;
  color: var(--c-white);
  margin: 0 0 10px;
}

.page-news .scene-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.86;
  color: var(--c-grey);
}

.page-news .scene-figure {
  margin: 28px 0 0;
  border: 1px solid var(--c-line);
  border-radius: var(--rad);
  overflow: hidden;
  background: rgba(11, 8, 18, .7);
}

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

/* ---------- 更新节奏 ---------- */
.page-news .cadence {
  padding: 26px 20px 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--rad);
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(201, 162, 75, .12) 0%, rgba(36, 22, 64, 0) 60%),
    rgba(36, 22, 64, .82);
}

.page-news .cadence__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin: 0;
}

.page-news .cadence__item {
  padding-top: 16px;
  border-top: 1px solid rgba(58, 42, 90, .85);
}

.page-news .cadence__label {
  display: block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-grey);
  margin-bottom: 8px;
}

.page-news .cadence__num {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--c-gold-lite);
  line-height: 1.3;
}

.page-news .cadence__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--c-grey);
}

.page-news .cadence__foot {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(58, 42, 90, .85);
  font-size: 14px;
  line-height: 1.9;
  color: var(--c-grey);
}

.page-news .cadence__foot a {
  color: var(--c-gold-lite);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 75, .42);
}

.page-news .cadence__foot a:hover,
.page-news .cadence__foot a:focus-visible {
  border-color: var(--c-gold);
}

/* ---------- 显现动效 ---------- */
.page-news .reveal {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .page-news .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .4s ease, transform .4s ease;
  }

  .page-news .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 窄屏保护 ---------- */
@media (max-width: 420px) {
  .page-news .news-hero {
    padding: 92px 0 48px;
  }

  .page-news .column-card__body,
  .page-news .column-card--lead .column-card__body {
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-news .cadence {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-news .cloud-wrap {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 680px) {
  .page-news .column-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

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

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

  .page-news .news-body {
    padding-bottom: 110px;
  }
}

/* ---------- 桌面：左侧索引 + 右侧错层内容 ---------- */
@media (min-width: 960px) {
  .page-news .news-hero {
    padding: 148px 0 86px;
  }

  .page-news .news-hero__inner {
    max-width: var(--news-max);
  }

  .page-news .news-hero__title {
    max-width: 16ch;
  }

  .page-news .news-body .grid--aside {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: 72px;
  }

  .page-news .news-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-news .column-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .column-stack > *:nth-child(2) {
    margin-top: 42px;
  }

  .page-news .column-stack > *:nth-child(3) {
    margin-top: 18px;
  }

  .page-news .observe-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
    align-items: start;
  }

  .page-news .scene-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-news .scene-grid > *:nth-child(2) {
    margin-top: 36px;
  }

  .page-news .cadence__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }

  .page-news .news-section {
    padding-top: 34px;
  }

  .page-news .news-section + .news-section {
    margin-top: 72px;
    padding-top: 58px;
  }
}