/* ===== 云上动态 / page-news ===== */

.page-news {
  display: block;
  color: var(--c-cloud);
  --news-hair: var(--c-grid);
  --news-cyan-line: rgba(51, 240, 208, 0.34);
}

/* ---------- 报头 ---------- */

.page-news .news-masthead {
  position: relative;
  padding: clamp(28px, 6vw, 54px) 0 clamp(26px, 5vw, 46px);
  border-bottom: 1px solid var(--news-hair);
  overflow: hidden;
}

.page-news .news-masthead::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 46%;
  height: 180%;
  background: linear-gradient(150deg, rgba(51, 240, 208, 0.13), rgba(77, 139, 255, 0.06) 55%, rgba(6, 11, 28, 0));
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-news .news-masthead::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(240px, 46%);
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan), rgba(51, 240, 208, 0));
}

.page-news .news-masthead h1 {
  position: relative;
  margin: clamp(16px, 3vw, 26px) 0 0;
  font-size: clamp(2.1rem, 8vw, 4.5rem);
  line-height: 1.03;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-news .news-lede {
  position: relative;
  margin: clamp(16px, 3vw, 24px) 0 0;
  max-width: 40ch;
  font-size: var(--fs-3);
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------- 置顶更新 ---------- */

.page-news .news-pin {
  padding-block: clamp(34px, 7vw, 76px);
}

.page-news .news-pin-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-news .news-pin-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 14px 0 0;
}

.page-news .news-pin-title {
  margin: 16px 0 0;
  font-size: clamp(1.45rem, 4.4vw, 2.35rem);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.015em;
}

.page-news .news-pin-text {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: var(--fs-3);
  line-height: 1.78;
  color: var(--c-muted);
}

.page-news .news-pin-points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 44ch;
}

.page-news .news-pin-points li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-2);
  line-height: 1.72;
  color: var(--c-muted);
}

.page-news .news-pin-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 9px;
  height: 1px;
  background: var(--c-cyan);
}

.page-news .news-pin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 0;
}

.page-news .news-pin-media {
  position: relative;
  margin: 0;
  border: 1px solid var(--news-hair);
  background: var(--c-deep);
  overflow: hidden;
}

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

.page-news .news-pin-media::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 56px;
  background: linear-gradient(180deg, rgba(6, 11, 28, 0), rgba(6, 11, 28, 0.86));
  pointer-events: none;
}

/* ---------- 更新索引 ---------- */

.page-news .news-stream {
  padding-block: clamp(36px, 7vw, 78px);
  border-top: 1px solid var(--news-hair);
  background: linear-gradient(180deg, rgba(13, 21, 48, 0.55), rgba(6, 11, 28, 0));
}

.page-news .news-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--news-hair);
}

.page-news .news-tab {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border: 1px solid var(--news-hair);
  border-radius: var(--radius);
  font-size: var(--fs-2);
  color: var(--c-muted);
  text-decoration: none;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background 160ms var(--ease);
}

.page-news .news-tab:hover,
.page-news .news-tab:focus-visible {
  border-color: var(--c-cyan);
  color: var(--c-cloud);
}

.page-news .news-tab.is-on {
  border-color: var(--c-cyan);
  background: var(--c-cyan);
  color: var(--c-void);
  font-weight: 700;
}

.page-news .news-more {
  position: relative;
}

.page-news .news-more-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
}

.page-news .news-feed {
  display: block;
  border-top: 1px solid var(--news-hair);
  margin-top: -1px;
}

.page-news .news-item {
  border-bottom: 1px solid var(--news-hair);
  border-left: 2px solid transparent;
  transition: border-left-color 180ms var(--ease), background 180ms var(--ease);
}

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  border-left-color: var(--c-cyan);
  background: rgba(13, 21, 48, 0.72);
}

.page-news .news-detail > summary {
  list-style: none;
  cursor: pointer;
}

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

.page-news .news-detail > summary::marker {
  content: "";
}

.page-news .news-row {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "tag time"
    "title title";
  gap: 9px 12px;
  align-items: center;
  padding: 14px 12px 14px 14px;
  transition: transform 200ms var(--ease);
}

.page-news .news-item:hover .news-row {
  transform: translateX(4px);
}

.page-news .news-row .tag {
  grid-area: tag;
  justify-self: start;
}

.page-news .news-time {
  grid-area: time;
  justify-self: end;
  font-family: var(--f-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.02em;
  color: var(--c-muted);
  white-space: nowrap;
}

.page-news .news-title {
  grid-area: title;
  font-size: var(--fs-3);
  font-weight: 700;
  line-height: 1.46;
  letter-spacing: -0.01em;
}

.page-news .news-summary {
  margin: 0;
  padding: 0 14px 18px;
  max-width: 68ch;
  font-size: var(--fs-2);
  line-height: 1.78;
  color: var(--c-muted);
}

.page-news .news-media-item {
  margin: 0;
  border-bottom: 1px solid var(--news-hair);
  background: var(--c-deep);
}

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

.page-news .news-media-item .media-caption {
  padding: 12px 14px 16px;
  font-size: var(--fs-1);
  color: var(--c-muted);
  line-height: 1.6;
}

.page-news .news-item--extra {
  display: none;
}

.page-news .news-more-input:checked ~ .news-feed .news-item--extra {
  display: block;
}

.page-news .news-more-input:checked ~ .news-more-btn {
  display: none;
}

.page-news .news-more-btn {
  display: block;
  margin-top: 22px;
  padding: 14px 20px;
  background: var(--c-orange);
  color: #1a0a02;
  font-size: var(--fs-2);
  font-weight: 800;
  letter-spacing: 0.02em;
  text-align: center;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: opacity 160ms var(--ease), transform 160ms var(--ease);
}

.page-news .news-more-btn:hover {
  opacity: 0.88;
}

.page-news .news-more-btn:active {
  transform: translateY(1px);
}

.page-news .news-more-input:focus-visible ~ .news-more-btn {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

/* ---------- 专题系列 ---------- */

.page-news .news-series {
  padding-block: clamp(44px, 8vw, 92px);
  border-top: 1px solid var(--news-hair);
}

.page-news .series-grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 44px);
}

.page-news .series-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--news-hair);
  border-top: 2px solid var(--c-cyan);
  background: var(--c-deep);
  border-radius: var(--radius);
  transition: transform 200ms var(--ease), border-top-color 200ms var(--ease);
}

.page-news .series-card:hover {
  transform: translateY(-3px);
  border-top-color: var(--c-orange);
}

.page-news .series-card--lead {
  border-top-color: var(--c-orange);
}

.page-news .series-card--lead:hover {
  border-top-color: var(--c-cyan);
}

.page-news .series-media {
  margin: 0;
  overflow: hidden;
  background: var(--c-void);
}

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

.page-news .series-body {
  padding: clamp(20px, 3vw, 30px);
}

.page-news .series-index {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--news-cyan-line);
  border-radius: var(--radius);
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.page-news .series-title {
  margin: 14px 0 0;
  font-size: clamp(1.25rem, 3vw, 1.65rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-news .series-text {
  margin: 14px 0 0;
  font-size: var(--fs-2);
  line-height: 1.82;
  color: var(--c-muted);
}

.page-news .series-fit {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--news-hair);
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--c-cloud);
}

/* ---------- 订阅与查询 ---------- */

.page-news .news-signup {
  padding-block: clamp(44px, 8vw, 92px);
  border-top: 1px solid var(--news-hair);
  background: linear-gradient(180deg, rgba(13, 21, 48, 0.5), rgba(6, 11, 28, 0));
}

.page-news .news-banner {
  margin: 0 0 clamp(26px, 4vw, 44px);
  border: 1px solid var(--news-hair);
  background: var(--c-deep);
  overflow: hidden;
}

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

.page-news .signup-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-news .signup-block {
  border-left: 2px solid var(--c-cyan);
  padding-left: clamp(16px, 3vw, 24px);
}

.page-news .signup-block--alt {
  border-left-color: var(--c-orange);
}

.page-news .signup-title {
  margin: 12px 0 0;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.01em;
}

.page-news .signup-text {
  margin: 14px 0 0;
  max-width: 42ch;
  font-size: var(--fs-2);
  line-height: 1.82;
  color: var(--c-muted);
}

.page-news .signup-text a {
  color: var(--c-cyan);
}

.page-news .signup-mail {
  margin: 18px 0 0;
  font-size: var(--fs-3);
  letter-spacing: 0.02em;
  color: var(--c-cloud);
  word-break: break-all;
}

.page-news .copy-btn {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  padding: 10px 16px;
  border: 1px solid var(--c-cyan);
  border-radius: var(--radius);
  background: transparent;
  color: var(--c-cyan);
  font-family: var(--f-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-news .copy-btn:hover {
  background: var(--c-cyan);
  color: var(--c-void);
}

.page-news .copy-btn[data-copied="true"] {
  border-color: var(--c-orange);
  background: var(--c-orange);
  color: var(--c-void);
}

.page-news .signup-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 0;
}

.page-news .signup-foot {
  margin: 20px 0 0;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--c-muted);
}

.page-news .signup-foot a {
  color: var(--c-cyan);
}

.page-news .signup-top {
  margin: 20px 0 0;
  font-family: var(--f-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.06em;
}

.page-news .signup-top a {
  color: var(--c-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--news-hair);
  padding-bottom: 2px;
}

.page-news .signup-top a:hover {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .series-card--lead {
    grid-column: 1 / -1;
  }

  .page-news .series-card--lead .series-body {
    padding: clamp(24px, 3.4vw, 34px);
  }
}

@media (min-width: 860px) {
  .page-news .news-pin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
  }

  .page-news .news-row {
    grid-template-columns: minmax(96px, auto) minmax(0, 1fr) 76px;
    grid-template-areas: "tag title time";
    gap: 22px;
    padding: 15px 16px 15px 18px;
  }

  .page-news .news-title {
    font-size: var(--fs-3);
  }

  .page-news .news-summary {
    padding-left: 158px;
  }

  .page-news .news-media-item .media-caption {
    padding-left: 158px;
  }

  .page-news .news-more-btn {
    width: auto;
    min-width: 220px;
    margin-left: auto;
    margin-right: auto;
  }

  .page-news .signup-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 1040px) {
  .page-news .series-grid {
    grid-template-columns: 1.55fr 1fr 1fr;
    align-items: stretch;
  }

  .page-news .series-card--lead {
    grid-column: auto;
  }

  .page-news .series-card--lead .series-media img {
    min-height: 260px;
    object-fit: cover;
  }
}

@media (max-width: 480px) {
  .page-news .news-masthead::before {
    width: 78%;
  }

  .page-news .news-pin-title {
    font-size: 1.4rem;
  }

  .page-news .news-pin-points li,
  .page-news .news-summary,
  .page-news .series-text,
  .page-news .signup-text {
    font-size: var(--fs-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-row,
  .page-news .news-item,
  .page-news .series-card,
  .page-news .news-more-btn,
  .page-news .copy-btn,
  .page-news .news-tab {
    transition: none;
  }

  .page-news .news-item:hover .news-row,
  .page-news .series-card:hover {
    transform: none;
  }
}