.page-news {
  display: block;
  padding-bottom: clamp(48px, 8vw, 96px);
  color: var(--text);
}

.page-news .news-head {
  padding-block: clamp(22px, 4vw, 42px) clamp(4px, 1vw, 10px);
}

.page-news .head-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-news .head-jump a {
  display: inline-block;
  padding: 6px 0;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 163, 191, 0.4);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-news .head-jump a:hover,
.page-news .head-jump a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 本期头条 ---------- */
.page-news .headline {
  position: relative;
  display: grid;
  gap: 22px;
  margin-top: clamp(24px, 4vw, 46px);
}

.page-news .headline-copy {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 44px);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 107, 0, 0.3);
  background:
    radial-gradient(120% 90% at 88% 12%, rgba(242, 193, 78, 0.18), transparent 62%),
    linear-gradient(142deg, var(--ink-700), var(--ink-900));
  box-shadow: var(--shadow-card);
}

.page-news .headline-copy::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, var(--orange), var(--gold) 52%, transparent);
}

.page-news .headline-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--gold);
  border: 1px solid rgba(242, 193, 78, 0.5);
  border-radius: 999px;
  padding: 5px 12px;
}

.page-news .headline-copy h2 {
  display: inline-block;
  margin: 18px 0 0;
  padding: 10px 26px 10px 18px;
  background: var(--orange);
  color: var(--ink-900);
  font-size: clamp(1.24rem, 3.6vw, 1.85rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  clip-path: polygon(0 0, 100% 0, calc(100% - 18px) 100%, 0 100%);
}

.page-news .headline-lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .headline-points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  counter-reset: hp;
  display: grid;
  gap: 14px;
}

.page-news .headline-points li {
  position: relative;
  counter-increment: hp;
  padding-left: 46px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .headline-points li strong {
  color: var(--text);
  font-weight: 700;
}

.page-news .headline-points li::before {
  content: "0" counter(hp);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  border: 1px solid rgba(242, 193, 78, 0.45);
  border-radius: 6px;
  padding: 3px 6px;
}

.page-news .headline-copy .btn {
  margin-top: 26px;
}

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

/* ---------- 通用区块头 ---------- */
.page-news .sec-head {
  max-width: 40em;
}

.page-news .sec-head h2 {
  margin: 10px 0 0;
  font-size: clamp(1.5rem, 4.2vw, 2.05rem);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-news .sec-head p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 变更记录 ---------- */
.page-news .logs,
.page-news .series,
.page-news .monthly,
.page-news .backtrack {
  margin-top: clamp(52px, 8vw, 92px);
}

.page-news .legend-fig {
  margin: 26px 0 0;
}

.page-news .log-board {
  margin-top: 26px;
}

.page-news .log-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.page-news .log-filters label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 15px;
  border: 1px solid rgba(143, 163, 191, 0.35);
  border-radius: 999px;
  font-size: 13px;
  color: var(--mist);
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
}

.page-news .log-filters label::before {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--dot, var(--mist));
}

.page-news .log-filters label[for="lf-all"] { --dot: linear-gradient(90deg, var(--gold), var(--jade) 45%, var(--coral)); }
.page-news .log-filters label[for="lf-struct"] { --dot: var(--gold); }
.page-news .log-filters label[for="lf-channel"] { --dot: var(--jade); }
.page-news .log-filters label[for="lf-content"] { --dot: var(--paper-2); }
.page-news .log-filters label[for="lf-tag"] { --dot: var(--orange); }
.page-news .log-filters label[for="lf-perf"] { --dot: var(--orange-2); }
.page-news .log-filters label[for="lf-feedback"] { --dot: var(--coral); }

.page-news .log-filters label:hover {
  transform: translateY(-2px);
  border-color: var(--orange);
  color: var(--text);
}

.page-news #lf-all:focus-visible ~ .log-filters label[for="lf-all"],
.page-news #lf-struct:focus-visible ~ .log-filters label[for="lf-struct"],
.page-news #lf-channel:focus-visible ~ .log-filters label[for="lf-channel"],
.page-news #lf-content:focus-visible ~ .log-filters label[for="lf-content"],
.page-news #lf-tag:focus-visible ~ .log-filters label[for="lf-tag"],
.page-news #lf-perf:focus-visible ~ .log-filters label[for="lf-perf"],
.page-news #lf-feedback:focus-visible ~ .log-filters label[for="lf-feedback"] {
  outline: 2px solid var(--orange-2);
  outline-offset: 3px;
}

.page-news #lf-struct:checked ~ .log-filters label[for="lf-struct"],
.page-news #lf-channel:checked ~ .log-filters label[for="lf-channel"],
.page-news #lf-content:checked ~ .log-filters label[for="lf-content"],
.page-news #lf-tag:checked ~ .log-filters label[for="lf-tag"],
.page-news #lf-perf:checked ~ .log-filters label[for="lf-perf"],
.page-news #lf-feedback:checked ~ .log-filters label[for="lf-feedback"] {
  background: var(--dot);
  border-color: transparent;
  color: var(--ink-900);
  font-weight: 700;
}

.page-news #lf-struct:checked ~ .log-list .log-card:not([data-cat="struct"]),
.page-news #lf-channel:checked ~ .log-list .log-card:not([data-cat="channel"]),
.page-news #lf-content:checked ~ .log-list .log-card:not([data-cat="content"]),
.page-news #lf-tag:checked ~ .log-list .log-card:not([data-cat="tag"]),
.page-news #lf-perf:checked ~ .log-list .log-card:not([data-cat="perf"]),
.page-news #lf-feedback:checked ~ .log-list .log-card:not([data-cat="feedback"]) {
  display: none;
}

.page-news .log-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-news .log-card {
  display: grid;
  gap: 10px;
  padding: 18px 18px 18px 16px;
  background: var(--ink-700);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-news .log-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.page-news .log-card[data-cat="struct"] { border-left-color: var(--gold); }
.page-news .log-card[data-cat="channel"] { border-left-color: var(--jade); }
.page-news .log-card[data-cat="content"] { border-left-color: var(--paper-2); }
.page-news .log-card[data-cat="tag"] { border-left-color: var(--orange); }
.page-news .log-card[data-cat="perf"] { border-left-color: var(--orange-2); }
.page-news .log-card[data-cat="feedback"] { border-left-color: var(--coral); }

.page-news .log-when {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

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

.page-news .cat-tag {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid currentColor;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-news .cat-tag[data-cat="channel"] { color: var(--jade); }
.page-news .cat-tag[data-cat="content"] { color: var(--paper-2); }
.page-news .cat-tag[data-cat="tag"] { color: var(--orange); }
.page-news .cat-tag[data-cat="perf"] { color: var(--orange-2); }
.page-news .cat-tag[data-cat="feedback"] { color: var(--coral); }

.page-news .log-id {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-news .log-body h3 {
  margin: 12px 0 0;
  font-size: clamp(1.05rem, 3.2vw, 1.28rem);
  line-height: 1.45;
  color: #ffffff;
}

.page-news .impact {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-news .impact strong {
  color: var(--orange-2);
  font-weight: 600;
}

.page-news .log-more {
  margin-top: 12px;
  padding-top: 8px;
  border-top: 1px dashed rgba(143, 163, 191, 0.3);
}

.page-news .log-more summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  list-style: none;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--orange-2);
}

.page-news .log-more summary::-webkit-details-marker {
  display: none;
}

.page-news .log-more summary::after {
  content: "＋";
  margin-left: 8px;
  font-family: var(--font-mono);
}

.page-news .log-more[open] summary::after {
  content: "－";
}

.page-news .log-more p {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--text);
}

/* ---------- 专题系列 ---------- */
.page-news .series-rail {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  padding: 4px 2px 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--orange) rgba(143, 163, 191, 0.2);
}

.page-news .series-rail::-webkit-scrollbar {
  height: 8px;
}

.page-news .series-rail::-webkit-scrollbar-track {
  background: rgba(143, 163, 191, 0.18);
  border-radius: 999px;
}

.page-news .series-rail::-webkit-scrollbar-thumb {
  background: var(--orange);
  border-radius: 999px;
}

.page-news .series-card {
  position: relative;
  flex: 0 0 min(310px, 84vw);
  scroll-snap-align: start;
  padding: 16px 16px 20px;
  border-radius: var(--radius);
  border-top: 3px solid var(--orange);
  background: var(--ink-700);
}

.page-news .series-card[data-series="channel"] { border-top-color: var(--jade); }
.page-news .series-card[data-series="handbook"] { border-top-color: var(--gold); }

.page-news .series-card + .series-card::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 46%;
  width: 16px;
  border-top: 1px dashed rgba(242, 193, 78, 0.5);
}

.page-news .series-card .figure {
  margin: 0;
}

.page-news .series-idx {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-news .series-card h3 {
  margin: 8px 0 0;
  font-size: 1.18rem;
  line-height: 1.4;
  color: #ffffff;
}

.page-news .series-card p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-news .series-order {
  padding-left: 12px;
  border-left: 2px solid rgba(255, 107, 0, 0.5);
  color: var(--text);
}

.page-news .series-link {
  display: inline-block;
  margin-top: 14px;
  padding: 8px 0;
  color: var(--orange-2);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 148, 64, 0.5);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-news .series-link:hover,
.page-news .series-link:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
}

/* ---------- 月度摘要 ---------- */
.page-news .month-grid {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-news .month-card {
  padding: 20px;
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--brown);
  box-shadow: var(--shadow-card);
}

.page-news .mon-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: #9c5810;
}

.page-news .month-card h3 {
  margin: 10px 0 0;
  font-size: 1.08rem;
  line-height: 1.45;
  color: var(--brown);
}

.page-news .month-card p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: #4a3a30;
}

/* ---------- 回溯路径 ---------- */
.page-news .bt-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-news .bt-card {
  padding: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(143, 163, 191, 0.3);
  background: var(--ink-700);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-news .bt-card:hover {
  border-color: rgba(255, 107, 0, 0.6);
  transform: translateY(-3px);
}

.page-news .bt-card h3 {
  margin: 0;
  font-size: 1.1rem;
  color: #ffffff;
}

.page-news .bt-card p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .bt-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--orange-2);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 148, 64, 0.5);
}

.page-news .bt-link:hover,
.page-news .bt-link:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
}

.page-news .bt-follow {
  margin-top: 22px;
  padding: 22px;
  border-left: 4px solid var(--orange);
  border-radius: var(--radius-sm);
  background: linear-gradient(118deg, rgba(255, 107, 0, 0.16), rgba(11, 30, 58, 0.9) 62%);
}

.page-news .bt-follow p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-news .bt-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .month-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-news .headline {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 30px;
    margin-top: clamp(30px, 4vw, 52px);
  }

  .page-news .headline-fig {
    margin-top: 34px;
  }

  .page-news .log-card {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 18px;
    padding: 22px 24px 22px 20px;
  }

  .page-news .log-when {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.32em;
    padding-right: 14px;
    justify-self: start;
    border-right: 1px dashed rgba(143, 163, 191, 0.32);
  }

  .page-news .series-card {
    flex-basis: 330px;
  }
}

@media (min-width: 1120px) {
  .page-news .headline {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

  .page-news .log-list {
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .log-card,
  .page-news .bt-card,
  .page-news .log-filters label {
    transition: none;
  }

  .page-news .log-card:hover,
  .page-news .bt-card:hover,
  .page-news .log-filters label:hover {
    transform: none;
  }
}