/* ===== 趋势观察 / news ===== */
.page-news {
  --news-panel: rgba(19, 28, 68, 0.62);
  --news-cyan-soft: rgba(34, 211, 238, 0.12);
  --news-purple-soft: rgba(167, 139, 250, 0.14);
  --news-track: clamp(20px, 3.4vw, 38px);
}

.page-news .news-crumb {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-news .news-open {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-news .news-open__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--yy-gap);
}

.page-news .news-open__intro {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(22px, 3.6vw, 42px);
  border: 1px solid var(--yy-line);
  border-radius: var(--yy-radius);
  background:
    linear-gradient(148deg, rgba(34, 211, 238, 0.16) 0%, rgba(167, 139, 250, 0.12) 44%, rgba(10, 18, 48, 0) 76%),
    var(--yy-indigo-soft);
}

.page-news .news-open__intro::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -46%;
  width: 62%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.26), rgba(34, 211, 238, 0) 70%);
  z-index: -1;
  pointer-events: none;
}

.page-news .news-open__intro .yy-h1 {
  margin: 14px 0 0;
}

.page-news .news-open__intro .yy-lead {
  margin: 16px 0 0;
  max-width: 38em;
  color: var(--yy-muted);
}

.page-news .news-open__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-news .news-open__panel {
  padding: clamp(18px, 2.6vw, 28px);
}

.page-news .news-open__panel-kicker {
  margin: 0 0 14px;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--yy-muted);
}

.page-news .news-index {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.page-news .news-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: var(--yy-radius-sm);
  color: var(--yy-text);
  text-decoration: none;
  font-size: 0.95rem;
  transition:
    background var(--yy-fast) var(--yy-ease),
    border-color var(--yy-fast) var(--yy-ease),
    transform var(--yy-fast) var(--yy-ease);
}

.page-news .news-index__link:hover,
.page-news .news-index__link:focus-visible {
  background: var(--news-cyan-soft);
  border-color: rgba(34, 211, 238, 0.35);
  transform: translateX(4px);
}

.page-news .news-index__num {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--yy-cyan);
}

.page-news .news-metrics {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--yy-line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
}

.page-news .news-metrics__row {
  margin: 0;
}

.page-news .news-metrics dt {
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--yy-muted);
}

.page-news .news-metrics dd {
  margin: 5px 0 0;
  font-size: 0.95rem;
  color: var(--yy-text);
}

.page-news .news-metrics__num {
  font-size: 1.25rem;
  color: var(--yy-cyan);
}

/* ---------- 动态列表 ---------- */
.page-news .news-head {
  max-width: 780px;
}

.page-news .news-head .yy-lead {
  margin-top: 12px;
  color: var(--yy-muted);
}

.page-news .news-feed__hero {
  margin: 0 0 clamp(20px, 3vw, 32px);
  border: 1px solid var(--yy-line);
  border-radius: var(--yy-radius);
  overflow: hidden;
  background: var(--yy-indigo-soft);
  aspect-ratio: 16 / 9;
}

.page-news .news-feed__hero .yy-media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .news-feed__hero .yy-media__cap {
  padding: 10px 14px;
  font-size: 0.8rem;
  color: var(--yy-muted);
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 18px;
  padding: 12px 14px;
  margin-bottom: clamp(20px, 3vw, 32px);
  border: 1px solid var(--yy-line);
  border-radius: var(--yy-radius);
  background: var(--news-panel);
}

.page-news .news-filter__chips {
  margin: 0;
}

.page-news .news-filter__hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--yy-muted);
}

.page-news .news-feed__list {
  position: relative;
  margin: 0;
  padding: 0 0 0 var(--news-track);
  list-style: none;
  border-left: 1px solid var(--yy-line);
}

.page-news .news-item {
  position: relative;
  padding-bottom: clamp(16px, 2.4vw, 26px);
}

.page-news .news-item:last-child {
  padding-bottom: 0;
}

.page-news .news-item__node {
  position: absolute;
  top: 12px;
  left: calc(var(--news-track) * -1 - 5px);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--yy-cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.14);
}

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

.page-news .news-item__card {
  padding: clamp(16px, 2.2vw, 24px);
  transition:
    border-color var(--yy-mid) var(--yy-ease),
    transform var(--yy-mid) var(--yy-ease);
}

.page-news .news-item__card:hover {
  border-color: rgba(34, 211, 238, 0.34);
  transform: translateY(-2px);
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
}

.page-news .news-item__title {
  margin: 0 0 8px;
  line-height: 1.5;
}

.page-news .news-item__summary {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--yy-muted);
}

.page-news .news-tag--docs {
  color: var(--yy-purple);
  background: var(--news-purple-soft);
  border-color: rgba(167, 139, 250, 0.4);
}

.page-news .news-tag--version {
  color: var(--yy-cyan-deep);
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.36);
}

.page-news .news-item__more {
  margin-top: 14px;
  border-top: 1px dashed var(--yy-line);
}

.page-news .news-item__more .yy-accordion__trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 0 4px;
  background: none;
  border: 0;
  color: var(--yy-cyan);
  font: inherit;
  font-size: 0.86rem;
  text-align: left;
  cursor: pointer;
  transition: color var(--yy-fast) var(--yy-ease);
}

.page-news .news-item__more .yy-accordion__trigger:hover,
.page-news .news-item__more .yy-accordion__trigger:focus-visible {
  color: var(--yy-text);
}

.page-news .news-item__more .yy-accordion__meta {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--yy-muted);
}

.page-news .news-item__more .yy-accordion__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-left: auto;
  color: currentColor;
}

.page-news .news-item__more .yy-accordion__icon::before,
.page-news .news-item__more .yy-accordion__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
  border-radius: 2px;
  transition:
    transform var(--yy-fast) var(--yy-ease),
    opacity var(--yy-fast) var(--yy-ease);
}

.page-news .news-item__more .yy-accordion__icon::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-news .news-item__more .yy-accordion__icon::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-news .news-item__more .yy-accordion__trigger[aria-expanded="true"] .yy-accordion__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-news .news-item__more .yy-accordion__body {
  padding: 4px 0 6px;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--yy-muted);
}

.page-news .news-item__more .yy-accordion__body p {
  margin: 0 0 8px;
}

.page-news .news-item__more .yy-accordion__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 专题系列 ---------- */
.page-news .news-topics__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--yy-gap);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-news .news-topic {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

.page-news .news-topic__media {
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--yy-line);
  border-radius: 0;
  overflow: hidden;
  background: var(--yy-indigo-soft);
  aspect-ratio: 3 / 2;
}

.page-news .news-topic__media .yy-media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .news-topic__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  padding: clamp(18px, 2.4vw, 26px);
}

.page-news .news-topic__meta {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--yy-cyan);
}

.page-news .news-topic__body .yy-h3 {
  margin: 0;
}

.page-news .news-topic__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--yy-muted);
}

.page-news .news-topic__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-news .news-topic__list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--yy-text);
}

.page-news .news-topic__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--yy-cyan);
}

.page-news .news-topic__facts {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-news .news-topic__fact {
  margin: 0;
  display: grid;
  gap: 4px;
    padding-bottom: 10px;
  border-bottom: 1px solid var(--yy-line);
}

.page-news .news-topic__fact:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-news .news-topic__fact dt {
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--yy-muted);
}

.page-news .news-topic__fact dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--yy-text);
}

.page-news .news-topic__body .yy-btn {
  align-self: flex-start;
  margin-top: 4px;
}

/* ---------- 更新节奏 ---------- */
.page-news .news-cadence__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-news .news-cadence__item {
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--yy-cyan);
}

.page-news .news-cadence__item:nth-child(2) {
  border-left-color: var(--yy-purple);
}

.page-news .news-cadence__item:nth-child(3) {
  border-left-color: var(--yy-green);
}

.page-news .news-cadence__item:nth-child(4) {
  border-left-color: var(--yy-orange);
}

.page-news .news-cadence__num {
  margin: 0 0 6px;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--yy-muted);
}

.page-news .news-cadence__item .yy-h3 {
  margin: 0 0 8px;
}

.page-news .news-cadence__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--yy-muted);
}

/* ---------- 延伸入口 ---------- */
.page-news .news-next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--yy-gap);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-news .news-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--yy-line);
  border-radius: var(--yy-radius);
  background: var(--news-panel);
  color: var(--yy-text);
  text-decoration: none;
  transition:
    border-color var(--yy-mid) var(--yy-ease),
    background var(--yy-mid) var(--yy-ease),
    transform var(--yy-mid) var(--yy-ease);
}

.page-news .news-next__card:hover,
.page-news .news-next__card:focus-visible {
  border-color: rgba(34, 211, 238, 0.45);
  background: linear-gradient(150deg, rgba(34, 211, 238, 0.12), rgba(167, 139, 250, 0.08));
  transform: translateY(-3px);
}

.page-news .news-next__idx {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--yy-cyan);
}

.page-news .news-next__card .yy-h3 {
  margin: 0;
}

.page-news .news-next__card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--yy-muted);
}

.page-news .news-next__contact {
  margin-top: clamp(22px, 3.4vw, 34px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--yy-line);
  border-radius: var(--yy-radius);
  background:
    linear-gradient(120deg, rgba(251, 146, 60, 0.12), rgba(10, 18, 48, 0) 62%),
    var(--yy-indigo-soft);
}

.page-news .news-next__contact-text {
  margin: 0 0 16px;
  max-width: 46em;
  line-height: 1.85;
  color: var(--yy-text);
}

.page-news .news-contact {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-news .news-contact__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-news .news-contact__key {
  min-width: 4.5em;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--yy-muted);
}

.page-news .news-contact__val {
  font-size: 1rem;
  color: var(--yy-text);
  word-break: break-all;
}

.page-news .news-contact__copy {
  margin-left: auto;
}

.page-news .news-contact__note {
  margin: 14px 0 0;
  font-size: 0.84rem;
  color: var(--yy-muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-news .news-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-news .news-cadence__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .news-metrics {
    gap: 18px 22px;
  }
}

@media (min-width: 880px) {
  .page-news .news-topics__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
  .page-news .news-topic--nav {
    grid-column: span 7;
  }
  .page-news .news-topic--docs {
    grid-column: span 5;
  }
  .page-news .news-topic--version {
    grid-column: span 5;
  }
  .page-news .news-topic--help {
    grid-column: span 7;
  }
  .page-news .news-topic--nav .news-topic__media,
  .page-news .news-topic--help .news-topic__media {
    aspect-ratio: 16 / 9;
  }
}

@media (min-width: 900px) {
  .page-news .news-open__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    align-items: start;
  }
  .page-news .news-open__panel {
    position: sticky;
    top: calc(var(--yy-header-h) + 20px);
  }
}

@media (min-width: 1024px) {
  .page-news .news-cadence__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-news .news-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-index__link,
  .page-news .news-item__card,
  .page-news .news-next__card {
    transition: none;
    transform: none;
  }
}