/* ========== 观察报告（/reports/） ========== */
.page-news {
  --news-accent: var(--cyan-400);
  --news-rule: var(--line-600);
  position: relative;
  background: var(--ink-950);
  color: var(--text-hi);
}

/* ---------- 顶部阅读进度线 ---------- */
.page-news .news-progress {
  position: fixed;
  z-index: 30;
  top: var(--topbar-h);
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-400), var(--cyan-700) 58%, var(--violet-500));
  transform: scaleX(var(--progress, 0));
  transform-origin: 0 50%;
  opacity: .9;
  pointer-events: none;
}

/* ---------- 框景首屏 ---------- */
.page-news .news-hero {
  padding-top: clamp(20px, 4vw, 44px);
  padding-bottom: clamp(26px, 5vw, 56px);
}

.page-news .news-hero__box {
  position: relative;
  margin-top: 20px;
  padding: clamp(22px, 4vw, 46px);
  border: 1px solid var(--news-rule);
  background: linear-gradient(158deg, rgba(17, 28, 46, .86), rgba(5, 10, 20, .18) 72%);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-news .news-hero__box::before,
.page-news .news-hero__box::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--line-600) 0 1px, transparent 1px 14px);
  opacity: .75;
  pointer-events: none;
}
.page-news .news-hero__box::before { top: 9px; }
.page-news .news-hero__box::after { bottom: 9px; }

.page-news .news-hero__title {
  margin: 12px 0 16px;
  max-width: 22ch;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(26px, 5.2vw, 46px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--text-hi);
}

.page-news .news-hero__lead {
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-mid);
}

.page-news .news-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--news-rule);
  list-style: none;
}
.page-news .news-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.page-news .news-hero__stats .num {
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan-400);
}
.page-news .news-hero__stats span:last-child {
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--text-mid);
}

.page-news .news-hero__media {
  margin: clamp(22px, 4vw, 38px) 0 0;
}

/* ---------- 通用图片 ---------- */
.page-news img.media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 章节标题 ---------- */
.page-news .news-sec-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 42px);
}
.page-news .news-sec-head h2 {
  margin: 10px 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.28;
  color: var(--text-hi);
}
.page-news .news-sec-head .prose {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-mid);
}

/* ---------- 三个系列 ---------- */
.page-news .series-grid {
  display: grid;
  gap: 26px;
}
.page-news .series-item {
  position: relative;
  padding-top: 20px;
  border-top: 1px solid var(--news-rule);
}
.page-news .series-item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--accent, var(--cyan-400));
  transform: skewX(-32deg);
  transform-origin: 0 0;
}
.page-news .series-item__num {
  margin: 0;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--accent, var(--cyan-400));
}
.page-news .series-item h3 {
  margin: 8px 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-hi);
}
.page-news .series-item p:last-child {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-news .news-inline-figure {
  margin: clamp(30px, 5vw, 52px) 0 0;
  max-width: 680px;
}

/* ---------- 筛选轨道 + 列表 ---------- */
.page-news .report-layout {
  display: grid;
  gap: 26px;
}

.page-news .filter-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  align-content: flex-start;
}
.page-news .filter-rail__title {
  flex: 0 0 100%;
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--cyan-400);
}
.page-news .filter-rail__title:first-child { margin-top: 0; }

.page-news .filter-link {
  display: inline-block;
  padding: 7px 0 7px 13px;
  border-left: 2px solid var(--line-600);
  font-family: var(--font-head);
  font-size: 14px;
  line-height: 1.3;
  color: var(--text-mid);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              background-color var(--dur-fast) var(--ease);
}
.page-news .filter-link:hover,
.page-news .filter-link:focus-visible {
  color: var(--text-hi);
  border-left-color: var(--cyan-700);
  background: rgba(41, 231, 214, .05);
}
.page-news .filter-link:target {
  color: var(--cyan-400);
  border-left-color: var(--cyan-400);
  background: rgba(41, 231, 214, .08);
}

.page-news .news-rail-figure {
  flex: 0 0 100%;
  margin: 14px 0 0;
}

/* 前端筛选：地址片段变化即时生效，无脚本时全部条目照常可读 */
.page-news:has(#f-round:target) .report:not([data-series="round"]),
.page-news:has(#f-data:target) .report:not([data-series="data"]),
.page-news:has(#f-prod:target) .report:not([data-series="prod"]) {
  display: none;
}

/* ---------- 条目列表 ---------- */
.page-news .report-list {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.page-news:has(#s-reads:target) .report {
  order: var(--rk, 99);
}

.page-news .report-list__figure {
  margin: 0 0 4px;
}

.page-news .report {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) 18px;
  gap: 12px;
  padding: 22px 0 24px;
  background: var(--ink-950);
  transition: background-color var(--dur-base) var(--ease);
}
.page-news .report::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(94deg, transparent 0 6%, var(--line-600) 6% 94%, transparent 94%);
}
.page-news .report-list .report:last-child::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(94deg, transparent 0 6%, var(--line-600) 6% 94%, transparent 94%);
}
.page-news .report:hover,
.page-news .report:focus-within {
  background: var(--ink-900);
}

.page-news .report__idx {
  padding-top: 2px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(15px, 2.2vw, 21px);
  line-height: 1.3;
  letter-spacing: .04em;
  color: var(--cyan-700);
}

.page-news .report__main { min-width: 0; }

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

.page-news .chip--round,
.page-news .chip--data,
.page-news .chip--prod {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--line-600);
  border-radius: 2px;
  background: transparent;
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: .06em;
  white-space: nowrap;
}
.page-news .chip--round { color: var(--cyan-400); border-color: rgba(41, 231, 214, .36); }
.page-news .chip--data { color: var(--amber-500); border-color: rgba(255, 176, 32, .36); }
.page-news .chip--prod { color: var(--violet-500); border-color: rgba(124, 107, 255, .42); }

.page-news .report__time {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--text-mid);
}

.page-news .report__title {
  margin: 9px 0 10px;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(16px, 2.3vw, 19px);
  line-height: 1.45;
  color: var(--text-hi);
}

.page-news .report__digest {
  margin: 0;
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-news .report__arrow {
  align-self: center;
  position: relative;
  width: 16px;
  height: 1px;
  background: var(--cyan-400);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}
.page-news .report__arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 6px;
  height: 6px;
  border-top: 1px solid var(--cyan-400);
  border-right: 1px solid var(--cyan-400);
  transform: rotate(45deg);
}
.page-news .report:hover .report__arrow,
.page-news .report:focus-within .report__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- 阅读建议 ---------- */
.page-news .reading-steps {
  display: grid;
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-news .reading-steps li {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 4px 0 4px 18px;
}
.page-news .reading-steps li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-400), rgba(41, 231, 214, 0) 92%);
  transform: skewX(-14deg);
  transform-origin: 0 0;
}
.page-news .reading-steps .num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--cyan-400);
}
.page-news .reading-steps h3 {
  margin: 0 0 7px;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.45;
  color: var(--text-hi);
}
.page-news .reading-steps p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.82;
  color: var(--text-mid);
}

/* ---------- 投稿与纠错 ---------- */
.page-news .feedback {
  position: relative;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--news-rule);
  background: linear-gradient(150deg, rgba(255, 176, 32, .07), rgba(5, 10, 20, 0) 62%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}
.page-news .feedback h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 27px);
  line-height: 1.28;
  color: var(--text-hi);
}
.page-news .feedback .prose {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-mid);
}
.page-news .feedback .meta-line {
  margin: 14px 0 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--text-mid);
}
.page-news .feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 0;
}

/* ---------- 回到顶部 ---------- */
.page-news .to-top {
  position: fixed;
  right: 16px;
  bottom: 76px;
  z-index: 35;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-600);
  background: rgba(10, 18, 32, .88);
  color: var(--cyan-400);
  font-family: var(--font-num);
  font-size: 15px;
  line-height: 1;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
  transition: background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.page-news .to-top:hover,
.page-news .to-top:focus-visible {
  background: var(--ink-800);
  border-color: var(--cyan-700);
}

/* ---------- 768px 以上恢复双栏与竖排筛选 ---------- */
@media (min-width: 768px) {
  .page-news .news-progress { top: 0; }

  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .page-news .report-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-news .filter-rail {
    display: block;
  }
  .page-news .filter-rail__title {
    margin: 26px 0 12px;
  }
  .page-news .filter-rail__title:first-child { margin-top: 0; }

  .page-news .filter-link {
    display: block;
    padding: 9px 12px 9px 16px;
  }

  .page-news .news-rail-figure {
    margin-top: 30px;
  }

  .page-news .report {
    grid-template-columns: 40px minmax(0, 1fr) 22px;
    gap: 16px;
    padding: 26px 0 28px;
  }

  .page-news .to-top { bottom: 26px; right: 22px; }
}

@media (min-width: 1024px) {
  .page-news .report-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 58px;
  }
  .page-news .report {
    grid-template-columns: 52px minmax(0, 1fr) 24px;
    padding: 30px 0 32px;
  }
  .page-news .report__digest { font-size: 15px; }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .report,
  .page-news .report__arrow,
  .page-news .filter-link,
  .page-news .to-top {
    transition-duration: 120ms;
  }
  .page-news .report__arrow {
    transform: none;
  }
  .page-news .report:hover .report__arrow,
  .page-news .report:focus-within .report__arrow {
    transform: none;
  }
}

.page-news {
  --accent: transparent;
  --progress: inherit;
  --rk: inherit;
}