/* ============ 页面根作用域 ============ */
.page-news {
  --accent: var(--lava);
  --news-gap: clamp(16px, 2.6vw, 32px);
  --news-rule: rgba(138, 147, 160, 0.26);
  --news-brass: rgba(185, 138, 75, 0.42);
  --news-pad: clamp(18px, 2.8vw, 30px);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  padding: clamp(24px, 4vw, 52px) var(--pad-x) clamp(48px, 7vw, 96px);
  overflow-x: clip;
}

.page-news .news-wrap {
  max-width: var(--wrap);
  margin-inline: auto;
}

.page-news .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--stone);
  margin: 0;
}

.page-news .section-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 8px 0 0;
}

/* ============ 首屏刊头 ============ */
.page-news .news-masthead {
  padding-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--news-rule);
}

.page-news .news-masthead .crumb {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-news .news-masthead .eyebrow {
  color: var(--lava);
}

.page-news .news-masthead h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-display);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 14px 0 20px;
  max-width: 17ch;
}

.page-news .news-lede {
  max-width: 60ch;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--mist);
  margin: 0 0 clamp(20px, 3vw, 28px);
}

.page-news .news-masthead__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ============ 常设系列横向带 ============ */
.page-news .news-series {
  padding-top: clamp(32px, 5vw, 60px);
}

.page-news .series-band {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px 2px 16px;
  margin: 18px -2px 0;
  scrollbar-width: thin;
}

.page-news .series-card {
  flex: 0 0 80%;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--news-pad);
  background: var(--night);
  border: 1px solid var(--news-rule);
  border-radius: var(--r-md);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .series-card:hover,
.page-news .series-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--lava);
}

.page-news .series-card--terra { border-top: 3px solid var(--terra); }
.page-news .series-card--cyan  { border-top: 3px solid var(--cyan); }
.page-news .series-card--moss  { border-top: 3px solid var(--moss); }
.page-news .series-card--brass { border-top: 3px solid var(--brass); }

.page-news .series-card__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--stone);
  margin: 0;
}

.page-news .series-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-h3);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0;
}

.page-news .series-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-news .series-card__foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--news-brass);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

/* ============ 系列跳转条 ============ */
.page-news .news-filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: clamp(20px, 3vw, 32px) 2px 10px;
  margin: 0 -2px;
  scrollbar-width: thin;
}

.page-news .filter-chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--news-rule);
  background: transparent;
  color: var(--mist);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.page-news .filter-chip:hover {
  border-color: var(--lava);
  color: var(--paper);
}

.page-news .filter-chip:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .filter-chip.is-on {
  background: var(--lava);
  border-color: var(--lava);
  color: var(--ink);
  font-weight: 700;
}

.page-news .filter-chip--terra:hover { border-color: var(--terra); }
.page-news .filter-chip--cyan:hover  { border-color: var(--cyan); }
.page-news .filter-chip--moss:hover  { border-color: var(--moss); }
.page-news .filter-chip--brass:hover { border-color: var(--brass); }

/* ============ 主区 + 右侧节奏栏 ============ */
.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding-top: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--news-rule);
}

.page-news .news-feed .section-head {
  margin-bottom: clamp(14px, 2vw, 22px);
}

/* ============ 条目流 ============ */
.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-news .entry {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px) 0;
  border-bottom: 1px solid var(--news-brass);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .entry:hover,
.page-news .entry:focus-within {
  transform: translateY(-4px);
  border-color: var(--lava);
}

.page-news .entry--terra { --accent: var(--terra); }
.page-news .entry--cyan  { --accent: var(--cyan); }
.page-news .entry--moss  { --accent: var(--moss); }
.page-news .entry--brass { --accent: var(--brass); }

.page-news .entry--feature {
  padding: clamp(20px, 2.6vw, 30px) clamp(18px, 2.4vw, 28px);
  margin-bottom: clamp(18px, 2.4vw, 28px);
  background: rgba(18, 41, 63, 0.55);
  border: 1px solid var(--news-rule);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-md);
}

.page-news .entry--feature:hover,
.page-news .entry--feature:focus-within {
  border-color: var(--line-brass);
  border-left-color: var(--accent);
}

.page-news .entry__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-news .entry__tag {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--paper);
  background: rgba(5, 13, 22, 0.7);
  border-left: 3px solid var(--accent);
  border-radius: 3px;
}

.page-news .entry__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--stone);
  white-space: nowrap;
}

.page-news .entry__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-news .entry--feature .entry__title {
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.34;
}

.page-news .entry__title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-news .entry__title a:hover {
  color: var(--lava);
}

.page-news .entry__title a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 3px;
}

.page-news .entry__sum {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .entry--feature .entry__sum {
  font-size: 16px;
}

/* 折叠摘要 */
.page-news .entry__fold {
  margin-top: 14px;
}

.page-news .entry__fold > summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 3px 0;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
  border-bottom: 1px dashed currentColor;
}

.page-news .entry__fold > summary::-webkit-details-marker {
  display: none;
}

.page-news .entry__fold > summary::after {
  content: "＋";
  font-size: 13px;
  line-height: 1;
}

.page-news .entry__fold[open] > summary::after {
  content: "－";
}

.page-news .entry__fold > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .entry__body {
  margin-top: 14px;
  padding: 14px 18px;
  background: rgba(5, 13, 22, 0.5);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.page-news .entry__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--mist);
}

/* ============ 右侧更新频率栏 ============ */
.page-news .news-rhythm {
  align-self: start;
  padding: var(--news-pad);
  background: rgba(18, 41, 63, 0.5);
  border: 1px solid var(--news-rule);
  border-radius: var(--r-md);
}

.page-news .news-rhythm__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 8px 0 18px;
}

.page-news .rhythm-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-news .rhythm-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 10px;
}

.page-news .rhythm-item--terra { --accent: var(--terra); }
.page-news .rhythm-item--cyan  { --accent: var(--cyan); }
.page-news .rhythm-item--moss  { --accent: var(--moss); }
.page-news .rhythm-item--brass { --accent: var(--brass); }

.page-news .rhythm-item__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--paper);
}

.page-news .rhythm-item__freq {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--stone);
  text-align: right;
  white-space: nowrap;
}

.page-news .rhythm-dots {
  grid-column: 1 / -1;
  display: block;
  width: 100%;
  height: 6px;
  color: var(--accent);
}

.page-news .news-rhythm__note {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--news-brass);
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

/* ============ 深度版块 ============ */
.page-news .deep {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  padding-block: clamp(36px, 5vw, 68px);
  border-top: 1px solid var(--news-rule);
}

.page-news .deep--transfer { --accent: var(--terra); }
.page-news .deep--weekly   { --accent: var(--cyan); }
.page-news .deep--visual   { --accent: var(--moss); }
.page-news .deep--log      { --accent: var(--brass); }

.page-news .deep__media {
  overflow: hidden;
  background: var(--night);
  border: 1px solid var(--news-brass);
  border-radius: var(--r-lg);
}

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

.page-news .deep__body .eyebrow {
  color: var(--accent);
}

.page-news .deep__body h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 10px 0 18px;
}

.page-news .deep__body p {
  margin: 0 0 14px;
  max-width: 62ch;
  color: var(--mist);
}

.page-news .deep__points {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news .deep__points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-news .deep__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.page-news .deep__body .btn {
  margin-top: 22px;
}

/* 版本日志时间线 */
.page-news .log-line {
  list-style: none;
  margin: 22px 0 0;
  padding: 0 0 0 20px;
  border-left: 1px solid var(--news-brass);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-news .log-line li {
  position: relative;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-news .log-line li::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 0.55em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--brass);
}

.page-news .log-line strong {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--stone);
}

/* ============ 合作区块 ============ */
.page-news .collab {
  margin-top: clamp(40px, 6vw, 80px);
  padding: clamp(28px, 4vw, 52px) clamp(20px, 3vw, 44px);
  background: linear-gradient(135deg, var(--night) 0%, rgba(11, 27, 43, 0.55) 100%);
  border: 1px solid var(--news-brass);
  border-radius: var(--r-lg);
}

.page-news .collab h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 10px 0 14px;
}

.page-news .collab__lede {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 62ch;
  color: var(--mist);
}

.page-news .collab__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-bottom: clamp(24px, 3vw, 34px);
}

.page-news .collab__card {
  padding: 18px 20px;
  background: rgba(5, 13, 22, 0.5);
  border: 1px solid var(--news-rule);
  border-radius: var(--r-md);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .collab__card:hover,
.page-news .collab__card:focus-within {
  transform: translateY(-4px);
  border-color: var(--lava);
}

.page-news .collab__card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-news .collab__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-news .collab__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-news .collab__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

/* ============ 渐进显现 ============ */
.page-news .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 340ms var(--ease), transform 340ms var(--ease);
}

.page-news .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-news .series-card {
    flex: 0 0 46%;
  }

  .page-news .collab__grid {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
}

@media (min-width: 760px) {
  .page-news .news-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 2.6vw, 34px);
  }

  .page-news .entry--feature {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-news .series-band {
    display: grid;
    grid-template-columns: 1.18fr 1fr 1fr 0.88fr;
    gap: 16px;
    overflow: visible;
    padding-bottom: 6px;
  }

  .page-news .series-card {
    flex: none;
    scroll-snap-align: none;
  }
}

@media (min-width: 1000px) {
  .page-news .news-layout {
    grid-template-columns: minmax(0, 1fr) 252px;
    gap: clamp(32px, 4vw, 60px);
  }

  .page-news .news-rhythm {
    position: sticky;
    top: 24px;
  }
}

@media (min-width: 880px) {
  .page-news .deep {
    grid-template-columns: 1.32fr 1fr;
    align-items: start;
  }

  .page-news .deep--flip {
    grid-template-columns: 1fr 1.32fr;
  }

  .page-news .deep--flip .deep__media {
    order: -1;
  }

  .page-news .deep__media--tall {
    align-self: stretch;
  }

  .page-news .deep__media--tall img {
    height: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }

  .page-news .reveal {
    opacity: 1;
    transform: none;
  }
}