.page-news {
  --news-line: rgba(11, 34, 57, .16);
  --news-soft: rgba(11, 34, 57, .05);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-news .news-masthead {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--paper);
  padding: clamp(24px, 5vw, 50px) 0 clamp(34px, 6vw, 68px);
}

.page-news .news-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(168, 230, 225, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 230, 225, .08) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}

.page-news .news-masthead::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -14%;
  width: 58%;
  height: 190%;
  background: var(--signal);
  opacity: .13;
  transform: skewX(-15deg);
  pointer-events: none;
}

.page-news .news-masthead .shell {
  position: relative;
  z-index: 1;
}

.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  color: rgba(252, 250, 246, .68);
}

.page-news .breadcrumb a {
  color: var(--aqua);
  text-decoration: none;
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-news .news-masthead__grid {
  display: grid;
  gap: clamp(18px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-news .news-masthead .eyebrow {
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .2em;
  margin: 0;
}

.page-news .news-masthead h1 {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(2rem, 5.8vw, 4rem);
  line-height: 1.06;
  letter-spacing: -.015em;
  margin: 14px 0 0;
  max-width: 15em;
}

.page-news .news-masthead .lead {
  color: rgba(252, 250, 246, .84);
  font-size: clamp(.95rem, 1.6vw, 1.06rem);
  line-height: 1.85;
  margin: 0;
}

.page-news .news-masthead__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 20px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid rgba(168, 230, 225, .3);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--aqua);
}

.page-news .news-masthead__meta li {
  position: relative;
  padding-left: 12px;
}

.page-news .news-masthead__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 6px;
  height: 1px;
  background: var(--signal);
}

/* ---------- 主体两栏 ---------- */
.page-news .news-body {
  display: grid;
  gap: clamp(20px, 4vw, 46px);
  padding: clamp(30px, 5vw, 58px) 0 clamp(44px, 7vw, 86px);
}

.page-news .news-index {
  border-top: 3px solid var(--deep);
  padding-top: 14px;
}

.page-news .news-index__title {
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--muted);
  margin: 0 0 10px;
}

.page-news .news-index__link {
  display: block;
  padding: 9px 0 9px 14px;
  border-left: 2px solid var(--news-line);
  color: var(--ink);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: .95rem;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, padding-left .2s ease;
}

.page-news .news-index__link:hover,
.page-news .news-index__link:focus-visible,
.page-news .news-index__link[aria-current="true"],
.page-news .news-index__link[aria-current="location"] {
  border-left-color: var(--signal);
  color: var(--deep);
  padding-left: 20px;
}

.page-news .news-index__link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ---------- 章节 ---------- */
.page-news .news-section {
  padding-top: clamp(24px, 4vw, 42px);
  scroll-margin-top: calc(var(--header-h) + 18px);
}

.page-news .news-section + .news-section {
  margin-top: clamp(26px, 5vw, 50px);
  border-top: 1px solid var(--news-line);
}

.page-news .news-section .eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--signal);
  margin: 0;
}

.page-news .news-section .section-title {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.4vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -.012em;
  color: var(--deep);
  margin: 10px 0 0;
}

.page-news .news-section .body-copy {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 本季头条 ---------- */
.page-news .news-headline {
  display: grid;
  gap: 26px;
  background: var(--sand);
  border-left: 4px solid var(--warm);
  padding: clamp(20px, 4vw, 38px);
}

.page-news .news-headline__stamp {
  display: inline-block;
  margin: 14px 0 0;
  padding: 4px 10px;
  background: var(--deep);
  color: var(--aqua);
  font-size: .72rem;
  letter-spacing: .1em;
}

.page-news .news-headline__points {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .news-headline__points li {
  position: relative;
  padding-left: 20px;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--ink);
}

.page-news .news-headline__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 8px;
  background: var(--signal);
}

.page-news .news-headline__actions,
.page-news .news-split__actions,
.page-news .news-steps__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-news .news-headline__media,
.page-news .news-split__media {
  margin: 0;
  overflow: hidden;
}

.page-news .news-headline__media img,
.page-news .news-split__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 动态列表 ---------- */
.page-news .news-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  counter-reset: newsitem;
}

.page-news .news-item {
  padding: clamp(16px, 3vw, 24px) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news .news-item:first-child {
  border-top: 1px solid var(--news-line);
}

.page-news .news-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-news .news-tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .05em;
  padding: 3px 9px;
  white-space: nowrap;
}

.page-news .news-tag--version {
  background: var(--signal);
  color: var(--deep);
}

.page-news .news-tag--doc {
  background: var(--aqua);
  color: var(--deep);
}

.page-news .news-tag--mobile {
  background: var(--panel);
  color: var(--paper);
}

.page-news .news-tag--route {
  background: var(--paper);
  color: var(--deep);
  border: 1px solid var(--deep);
}

.page-news .news-tag--notice {
  background: var(--peach);
  color: var(--ink);
}

.page-news .news-time {
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-news .news-item__title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  line-height: 1.4;
  color: var(--deep);
  margin: 0;
}

.page-news .news-item--lead .news-item__title {
  font-size: clamp(1.3rem, 3.1vw, 1.9rem);
  font-weight: 800;
  line-height: 1.28;
}

.page-news .news-item__desc {
  margin: 8px 0 0;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--ink);
  opacity: .82;
  max-width: 44em;
}

/* ---------- 图文分栏 ---------- */
.page-news .news-split {
  display: grid;
  gap: 24px;
}

.page-news .news-split__actions {
  margin-top: 20px;
}

/* ---------- 适配问题 ---------- */
.page-news .news-issue {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .news-issue li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-top: 14px;
  border-top: 1px dashed var(--news-line);
}

.page-news .news-issue__no {
  font-size: .8rem;
  color: var(--warm);
  letter-spacing: .06em;
  padding-top: 2px;
}

.page-news .news-issue__title {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--deep);
  margin: 0;
}

.page-news .news-issue__desc {
  margin: 6px 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--ink);
  opacity: .82;
}

/* ---------- 六步路线 ---------- */
.page-news .news-section--sand {
  background: var(--sand);
  border-top: 0;
  padding: clamp(22px, 4vw, 36px);
}

.page-news .news-steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .news-steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 16px;
  background: var(--paper);
  border-top: 2px solid var(--deep);
}

.page-news .news-steps__idx {
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--signal);
}

.page-news .news-steps__title {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1rem;
  color: var(--deep);
  margin: 0;
}

.page-news .news-steps__desc {
  margin: 6px 0 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--ink);
  opacity: .82;
}

/* ---------- 更新节奏 ---------- */
.page-news .news-cadence {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-news .news-cadence li {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--news-line);
}

.page-news .news-cadence__key {
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--signal);
  align-self: start;
  padding-top: 3px;
}

.page-news .news-cadence__val {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 移动端导航形态 ---------- */
@media (max-width: 999px) {
  .page-news .news-index {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    border-top-width: 2px;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .page-news .news-index__title {
    display: none;
  }

  .page-news .news-index__link {
    flex: 0 0 auto;
    border: 1px solid var(--news-line);
    border-left-width: 1px;
    border-radius: 999px;
    padding: 7px 14px;
    font-size: .85rem;
    white-space: nowrap;
  }

  .page-news .news-index__link:hover,
  .page-news .news-index__link:focus-visible,
  .page-news .news-index__link[aria-current="true"],
  .page-news .news-index__link[aria-current="location"] {
    border-color: var(--signal);
    background: var(--aqua);
    padding-left: 14px;
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 760px) {
  .page-news .news-steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 860px) {
  .page-news .news-masthead__grid {
    grid-template-columns: 6fr 5fr;
    align-items: end;
  }

  .page-news .news-headline {
    grid-template-columns: 1.1fr .9fr;
    align-items: start;
    gap: 34px;
  }

  .page-news .news-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: start;
    gap: 34px;
  }

  .page-news .news-split--flip .news-split__text {
    order: 2;
  }

  .page-news .news-split--flip .news-split__media {
    order: 1;
  }
}

@media (min-width: 1000px) {
  .page-news .news-body {
    grid-template-columns: 188px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-news .news-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

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