.page-news {
  --news-line: rgba(30, 58, 110, 0.55);
  --news-gold-line: rgba(232, 182, 90, 0.42);
  --news-tint: rgba(63, 224, 208, 0.07);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding: 30px 0 0;
}

.page-news .hero-grid {
  display: grid;
  gap: 22px;
  margin-top: 22px;
}

@media (min-width: 960px) {
  .page-news .hero-grid {
    grid-template-columns: minmax(0, 7.4fr) minmax(0, 4.6fr);
    gap: 48px;
    align-items: end;
  }
}

.page-news .hero-main h1 {
  margin: 10px 0 0;
}

.page-news .hero-main .lead {
  margin: 18px 0 0;
  max-width: 62ch;
}

.page-news .hero-side {
  display: grid;
  gap: 12px;
  align-content: start;
  border-left: 1px solid var(--line);
  padding-left: 18px;
}

@media (max-width: 959px) {
  .page-news .hero-side {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 16px;
  }
}

.page-news .hero-side-link a {
  color: var(--accent);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.4);
}

.page-news .hero-side-link a:hover {
  color: var(--accent-soft);
  border-color: var(--accent-soft);
}

.page-news .hero-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 26px;
  padding: 12px 0;
  border-top: 1px solid var(--news-line);
  border-bottom: 1px solid var(--news-line);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .news-banner {
  margin: 28px 0 0;
}

.page-news .media-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ---------- 章节基线 ---------- */
.page-news .chapter {
  padding: 52px 0;
}

.page-news .chapter + .chapter {
  border-top: 1px solid var(--news-line);
}

.page-news .cols {
  display: grid;
  gap: 26px;
}

@media (min-width: 960px) {
  .page-news .cols {
    grid-template-columns: minmax(0, 3.6fr) minmax(0, 8.4fr);
    gap: 54px;
  }
}

.page-news .rail {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-news .rail .headline {
  margin: 0;
}

.page-news .rail .note {
  margin: 0;
}

/* ---------- 01 栏目导读 ---------- */
.page-news .tag-guide {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--news-line);
  border: 1px solid var(--news-line);
}

@media (min-width: 720px) {
  .page-news .tag-guide {
    grid-template-columns: 1fr 1fr;
  }
}

.page-news .tag-card {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 22px 20px 24px;
  background: var(--bg-1);
  transition: background 0.22s ease;
}

.page-news .tag-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gold);
  opacity: 0.78;
}

.page-news .tag-card:hover {
  background: var(--bg-2);
}

.page-news .tag-card-title {
  margin: 0;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.page-news .tag-card-text {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-news .tag-card-meta {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
}

/* ---------- 02 更新列表 ---------- */
.page-news .stream-grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 1000px) {
  .page-news .stream-grid {
    grid-template-columns: minmax(0, 3.2fr) minmax(0, 8.8fr);
    gap: 52px;
  }

  .page-news .stream-rail {
    position: sticky;
    top: 92px;
    align-self: start;
  }
}

.page-news .stream-rail {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-news .stream-rail .headline {
  margin: 0;
}

.page-news .stream-rail .note {
  margin: 0;
}

.page-news .tagbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.page-news .tag {
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.02em;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-news .tag:hover {
  color: var(--text);
  border-color: var(--accent-soft);
}

.page-news .tag.is-active {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: var(--accent);
}

.page-news .stream-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--news-line);
}

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

.page-news .entry-head {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  gap: 6px 14px;
  align-items: start;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
}

.page-news .entry-head::-webkit-details-marker {
  display: none;
}

.page-news .entry-index {
  grid-column: 1;
  grid-row: 1;
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.page-news .entry-title {
  grid-column: 2;
  grid-row: 1;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--text);
  transition: color 0.2s ease;
}

.page-news .entry-flags {
  grid-column: 2;
  grid-row: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.page-news .entry-tag {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
  border: 1px solid var(--news-gold-line);
  border-radius: var(--radius);
  padding: 2px 8px;
}

.page-news .entry-time {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .entry-head:hover .entry-title,
.page-news .entry[open] .entry-title {
  color: var(--accent-soft);
}

.page-news .entry-body {
  padding: 0 2px 22px 3.4em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-news .entry-body p {
  margin: 0 0 12px;
}

.page-news .entry-body p:last-child {
  margin-bottom: 0;
}

.page-news .entry-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.4);
  padding-bottom: 1px;
}

.page-news .entry-link:hover {
  color: var(--accent-soft);
  border-color: var(--accent-soft);
}

@media (max-width: 599px) {
  .page-news .entry-head {
    grid-template-columns: 1.9em minmax(0, 1fr);
  }

  .page-news .entry-title {
    font-size: 17px;
  }

  .page-news .entry-body {
    padding-left: 0;
  }
}

/* ---------- 03 使用指引 ---------- */
.page-news .howto-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .howto {
  display: grid;
  gap: 10px;
  padding: 20px 22px 22px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.page-news .howto:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lift);
}

.page-news .howto-title {
  margin: 0;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.page-news .howto-text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-news .howto-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--accent-soft);
}

.page-news .howto-steps li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-news .step-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent);
  font-size: 12px;
  line-height: 1;
}

/* ---------- 04 专题回顾 ---------- */
.page-news .series-cols {
  display: grid;
  gap: 28px;
}

@media (min-width: 960px) {
  .page-news .series-cols {
    grid-template-columns: minmax(0, 8.2fr) minmax(0, 3.8fr);
    gap: 54px;
  }
}

.page-news .series-main > .lead {
  margin: 16px 0 0;
  max-width: 62ch;
}

.page-news .series-banner {
  margin: 26px 0 0;
}

.page-news .series-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-news .series-side .note {
  margin: 0;
}

.page-news .series-cta {
  margin: 6px 0 0;
}

.page-news .stack-list {
  display: grid;
  gap: 26px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .stack-item {
  position: relative;
}

.page-news .stack-card {
  position: relative;
  padding: 22px 24px 24px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  box-shadow: 11px 11px 0 -2px rgba(5, 11, 26, 0.9), 11px 11px 0 -1px var(--news-line);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.page-news .stack-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 15px 15px 0 -2px rgba(5, 11, 26, 0.9), 15px 15px 0 -1px var(--accent);
}

.page-news .stack-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 8px;
}

.page-news .stack-no {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-news .stack-title {
  margin: 0;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.page-news .stack-text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 05 回看与订阅 ---------- */
.page-news .follow-grid {
  display: grid;
  gap: 30px;
}

@media (min-width: 900px) {
  .page-news .follow-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 54px;
  }
}

.page-news .follow-intro {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-news .follow-intro .headline,
.page-news .follow-intro .lead,
.page-news .follow-intro .note {
  margin: 0;
}

.page-news .follow-cards {
  display: grid;
  gap: 16px;
}

@media (min-width: 720px) {
  .page-news .follow-cards {
    grid-template-columns: 1fr 1fr;
  }
}

.page-news .follow-card {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px 20px;
  background: var(--bg-1);
  border: 1px solid var(--line);
}

.page-news .follow-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), rgba(63, 224, 208, 0));
}

.page-news .follow-card h3 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.page-news .follow-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .follow-card .btn {
  justify-self: start;
}

.page-news .follow-mail {
  word-break: break-all;
}

.page-news .copy-btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-align: left;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ghost);
  color: var(--accent);
  cursor: pointer;
  word-break: break-all;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-news .copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent-soft);
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 479px) {
  .page-news .chapter {
    padding: 40px 0;
  }

  .page-news .hero-strip {
    gap: 6px 16px;
    font-size: 11px;
  }

  .page-news .stack-card {
    padding: 18px 16px 20px;
    box-shadow: 7px 7px 0 -2px rgba(5, 11, 26, 0.9), 7px 7px 0 -1px var(--news-line);
  }
}