.page-news{
  --news-rail-w:252px;
  --news-rule:rgba(59,242,228,.16);
  --news-rule-soft:rgba(255,255,255,.085);
  color:var(--paper-100);
}

/* 面包屑 */
.page-news .breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 clamp(22px,3vw,38px);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--slate-400);
}
.page-news .breadcrumbs a{
  color:inherit;
  text-decoration:none;
  transition:color .16s;
}
.page-news .breadcrumbs a:hover{color:var(--cy-400);}
.page-news .breadcrumbs [aria-current="page"]{color:var(--cy-400);}

/* 首屏 */
.page-news .news-hero__grid{
  display:grid;
  gap:clamp(26px,4vw,52px);
  align-items:end;
}
@media (min-width:1024px){
  .page-news .news-hero__grid{
    grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  }
}
.page-news .display.news-hero__title{
  font-size:clamp(36px,4.6vw + 8px,74px);
  line-height:.98;
  letter-spacing:-.02em;
  font-weight:200;
  margin:16px 0 0;
  max-width:14ch;
}
.page-news .news-hero__lede{
  margin:20px 0 0;
  max-width:46ch;
}
.page-news .news-hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:clamp(22px,3vw,34px);
}
.page-news .news-hero__media{margin:0;}

/* 分类条 */
.page-news .news-channels{
  border-top:1px solid var(--news-rule);
  border-bottom:1px solid var(--news-rule);
  background:var(--ds-850);
}
.page-news .news-channels__inner{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:14px;
  padding-bottom:12px;
}
@media (min-width:900px){
  .page-news .news-channels__inner{
    flex-direction:row;
    align-items:center;
    gap:36px;
  }
}
.page-news .news-channels__label{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cy-600);
  white-space:nowrap;
}
.page-news .news-channels__list{
  display:flex;
  gap:22px;
  margin:0;
  padding:0 0 4px;
  list-style:none;
  overflow-x:auto;
  scrollbar-width:thin;
}
.page-news .news-channel{
  display:block;
  padding:4px 0 6px;
  white-space:nowrap;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--slate-400);
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color .16s,border-color .16s;
}
.page-news .news-channel:hover{
  color:var(--paper-100);
  border-bottom-color:var(--cy-600);
}
.page-news .news-channel.is-active{
  color:var(--cy-400);
  font-weight:700;
  border-bottom-color:var(--cy-400);
}

/* 本期重点 */
.page-news .news-alerts__head{
  max-width:64ch;
  margin-bottom:clamp(24px,3vw,40px);
}
.page-news .news-alerts__title{
  margin:12px 0 14px;
  font-size:clamp(26px,2.4vw + 12px,40px);
  line-height:1.18;
  letter-spacing:-.01em;
}
.page-news .news-alerts__list{
  display:grid;
  gap:16px;
  border:0;
}
@media (min-width:900px){
  .page-news .news-alerts__list{
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:20px;
  }
}
.page-news .alert-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin:0;
  padding:22px 22px 18px;
  background:var(--ds-850);
  border:1px solid var(--news-rule);
  border-left:3px solid var(--ember-500);
  border-radius:0;
}
.page-news .alert-card__flag{
  align-self:flex-start;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  color:var(--ink-900);
  background:var(--ember-500);
  clip-path:polygon(0 0,100% 0,100% 62%,calc(100% - 8px) 100%,0 100%);
}
.page-news .alert-card__title{
  margin:0;
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  color:var(--paper-100);
}
.page-news .alert-card__meta{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--slate-400);
}
.page-news .alert-card .accordion__trigger{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  width:100%;
  margin-top:auto;
  padding:12px 0 0;
  background:none;
  border:0;
  border-top:1px solid var(--news-rule);
  color:var(--cy-400);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  cursor:pointer;
  transition:color .16s;
}
.page-news .alert-card .accordion__trigger:hover{color:var(--paper-100);}
.page-news .alert-card .accordion__body{
  padding-top:10px;
  font-size:14px;
  line-height:1.8;
  color:var(--slate-400);
}
.page-news .alert-card .accordion__body p{margin:0 0 10px;}
.page-news .alert-card .accordion__body p:last-child{margin-bottom:0;}

/* 主体：左侧索引 + 长列表 */
.page-news .news-stream__grid{
  display:grid;
  gap:clamp(30px,4vw,56px);
}
@media (min-width:1024px){
  .page-news .news-stream__grid{
    grid-template-columns:var(--news-rail-w) minmax(0,1fr);
    align-items:start;
  }
  .page-news .news-rail{
    position:sticky;
    top:96px;
  }
}
.page-news .news-rail{
  border-top:1px solid var(--news-rule-soft);
  padding-top:18px;
}
.page-news .news-rail__title{margin:0 0 14px;}
.page-news .news-rail__list{
  margin:0;
  padding:0;
  list-style:none;
  border-top:1px solid var(--news-rule-soft);
}
.page-news .news-rail__list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:11px 0;
  border-bottom:1px solid var(--news-rule-soft);
  font-size:14px;
  color:var(--slate-400);
  text-decoration:none;
  transition:color .16s,padding-left .16s;
}
.page-news .news-rail__list a::after{
  content:"›";
  font-family:var(--font-mono);
  color:var(--cy-600);
}
.page-news .news-rail__list a:hover{
  color:var(--cy-400);
  padding-left:6px;
}
.page-news .news-rail__note{
  margin-top:24px;
  padding:16px;
  border:1px solid var(--news-rule);
  background:var(--ds-850);
}
.page-news .news-rail__note p{
  margin:0 0 10px;
  font-size:13px;
  line-height:1.75;
  color:var(--slate-400);
}
.page-news .news-rail__note-title{
  font-family:var(--font-mono);
  font-size:11px !important;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cy-400) !important;
}
.page-news .news-rail__note .index-note{margin:0;}

.page-news .news-stream__head{
  margin-bottom:clamp(18px,2.4vw,28px);
}
.page-news .news-stream__title{
  margin:10px 0 0;
  font-size:clamp(26px,2.6vw + 12px,42px);
  line-height:1.16;
  letter-spacing:-.01em;
}
.page-news .topic-list{
  margin:0;
  padding:0;
  list-style:none;
}

/* 列表条目 */
.page-news .topic-item{
  display:grid;
  gap:14px;
  padding:clamp(20px,2.4vw,30px) 0;
  border-top:1px solid var(--news-rule-soft);
  transition:background-color .16s;
}
@media (min-width:768px){
  .page-news .topic-item{
    grid-template-columns:104px minmax(0,1fr);
    gap:clamp(18px,2.6vw,36px);
  }
}
.page-news .topic-item__date{
  display:flex;
  flex-direction:column;
  gap:4px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
  color:var(--slate-400);
}
.page-news .topic-item__phase{
  font-size:13px;
  color:var(--cy-400);
}
.page-news .topic-item__mark{
  margin-top:4px;
  padding-top:6px;
  border-top:1px solid var(--news-rule);
  color:var(--slate-400);
}
.page-news .topic-item__main{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:10px;
  min-width:0;
}
.page-news .topic-tag{
  --tag:var(--cy-400);
  display:inline-block;
  padding:4px 10px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--tag);
  border:1px solid var(--tag);
  background:transparent;
  clip-path:none;
  transition:clip-path .16s,background-color .16s,color .16s;
}
.page-news .topic-tag--change{--tag:var(--ember-500);}
.page-news .topic-tag--review{--tag:var(--cy-400);}
.page-news .topic-tag--method{--tag:var(--paper-300);}
.page-news .topic-tag--digest{--tag:var(--cy-600);}
.page-news .topic-tag--project{--tag:var(--slate-400);}
.page-news .topic-item:hover .topic-tag,
.page-news .topic-item:focus-within .topic-tag{
  clip-path:polygon(0 0,100% 0,100% 64%,calc(100% - 10px) 100%,0 100%);
  background:var(--tag);
  color:var(--ink-900);
  border-color:var(--tag);
}
.page-news .topic-item__title{
  margin:0;
  font-size:clamp(18px,1.2vw + 12px,23px);
  line-height:1.5;
  font-weight:600;
  color:var(--paper-100);
  letter-spacing:-.005em;
}
.page-news .topic-item__desc{
  margin:0;
  font-size:15px;
  line-height:1.85;
  color:var(--slate-400);
  max-width:58ch;
}
.page-news .topic-figure{
  width:100%;
  max-width:520px;
  margin:6px 0 0;
}
.page-news .topic-item__more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding-bottom:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cy-400);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:border-color .16s,color .16s;
}
.page-news .topic-item__more::after{
  content:"→";
  transition:transform .16s;
}
.page-news .topic-item__more:hover{
  border-bottom-color:var(--cy-400);
}
.page-news .topic-item__more:hover::after{transform:translateX(4px);}

/* 列表中的窄幅说明 */
.page-news .stream-note{
  display:grid;
  gap:10px;
  margin:0;
  padding:20px 22px;
  border:1px solid var(--news-rule);
  border-left:3px solid var(--cy-600);
  background:linear-gradient(90deg,rgba(59,242,228,.07),rgba(59,242,228,0) 72%);
}
.page-news .stream-note .eyebrow{color:var(--cy-600);}
.page-news .stream-note__text{
  margin:0;
  font-size:15px;
  line-height:1.85;
  color:var(--slate-400);
  max-width:62ch;
}

/* 邮件摘要（暖纸区） */
.page-news .news-digest__head{
  max-width:60ch;
  margin-bottom:clamp(24px,3vw,40px);
}
.page-news .news-digest__head .eyebrow{color:#0F7C75;}
.page-news .news-digest__title{
  margin:12px 0 12px;
  font-size:clamp(26px,2.4vw + 12px,40px);
  line-height:1.18;
  color:var(--ink-900);
}
.page-news .news-digest__lede{
  margin:0;
  font-size:16px;
  line-height:1.85;
  color:var(--muted-paper);
  max-width:52ch;
}
.page-news .news-digest__grid{
  display:grid;
  gap:clamp(18px,2.4vw,26px);
}
@media (min-width:900px){
  .page-news .news-digest__grid{
    grid-template-columns:minmax(0,320px) minmax(0,1fr) minmax(0,1fr);
    align-items:start;
  }
}
.page-news .news-digest__media{margin:0;}
.page-news .digest-card{
  padding:22px;
  border:1px solid var(--paper-300);
  background:rgba(255,255,255,.34);
}
.page-news .digest-card__title{
  margin:0 0 14px;
  font-size:19px;
  line-height:1.45;
  color:var(--ink-900);
  font-weight:700;
}
.page-news .digest-card__list{
  margin:0;
  padding:0;
  list-style:none;
}
.page-news .digest-card__list li{
  display:grid;
  grid-template-columns:34px minmax(0,1fr);
  gap:8px;
  padding:10px 0;
  border-top:1px solid var(--paper-300);
  font-size:14px;
  line-height:1.7;
  color:var(--muted-paper);
}
.page-news .digest-card__list li:first-child{border-top:0;}
.page-news .digest-card__num{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:#0F7C75;
  padding-top:3px;
}
.page-news .digest-card p{
  margin:0;
  font-size:15px;
  line-height:1.85;
  color:var(--muted-paper);
}
.page-news .digest-card__more{
  display:inline-block;
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:#0F7C75;
  text-decoration:none;
  border-bottom:1px solid #0F7C75;
  padding-bottom:2px;
}
.page-news .digest-card__more:hover{color:var(--ink-900);border-bottom-color:var(--ink-900);}

/* 投稿与纠错 */
.page-news .news-feedback__grid{
  display:grid;
  gap:clamp(26px,3.4vw,48px);
}
@media (min-width:960px){
  .page-news .news-feedback__grid{
    grid-template-columns:minmax(0,7fr) minmax(0,5fr);
    align-items:start;
  }
}
.page-news .news-feedback__title{
  margin:12px 0 16px;
  font-size:clamp(24px,2.2vw + 12px,36px);
  line-height:1.2;
}
.page-news .news-feedback__panel{
  padding:22px;
  border:1px solid var(--news-rule);
  background:var(--ds-850);
}
.page-news .feedback-steps{
  margin:0;
  padding:0;
  list-style:none;
  border-top:1px solid var(--news-rule-soft);
}
.page-news .feedback-steps li{
  display:grid;
  grid-template-columns:36px minmax(0,1fr);
  gap:10px;
  padding:14px 0;
  border-bottom:1px solid var(--news-rule-soft);
  font-size:14px;
  line-height:1.8;
  color:var(--slate-400);
}
.page-news .feedback-steps__num{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cy-400);
  padding-top:3px;
}
.page-news .news-feedback__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:20px;
}

/* 窄屏收口 */
@media (max-width:767px){
  .page-news .news-hero__title{max-width:100%;}
  .page-news .topic-figure{max-width:100%;}
  .page-news .news-channels__list{gap:16px;}
}
</main>