/* ===== 页面专属 CSS — .page-news ===== */
.page-news {
  --news-red: #E63946;
  --news-orange: #F4A261;
  --news-blue: #1D3557;
  --news-silver: #C0C0C0;
  --news-bg-card: rgba(11, 12, 16, 0.72);
  --news-border-glow: rgba(230, 57, 70, 0.25);
  --news-timeline-width: 3px;
  --news-node-size: 14px;

  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--color-bg-dark);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: var(--line-height-body, 1.6);
  padding: 0 0 3rem 0;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-news__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  background: linear-gradient(135deg, rgba(230,57,70,0.08), rgba(244,162,97,0.04));
  border-bottom: 1px solid rgba(192,192,192,0.12);
  flex-wrap: wrap;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.page-news__breadcrumb-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
  font-weight: 500;
}

.page-news__breadcrumb-link:hover {
  color: var(--news-red);
}

.page-news__breadcrumb-sep {
  color: var(--news-silver);
  opacity: 0.5;
}

.page-news__breadcrumb-current {
  color: var(--color-text-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* ---------- Hero ---------- */
.page-news__hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  padding: 2.5rem 1.25rem 1.5rem;
  box-sizing: border-box;
}

.page-news__hero-text {
  position: relative;
  z-index: 2;
  text-align: center;
  margin-bottom: 1.5rem;
}

.page-news__hero-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: clamp(2.2rem, 8vw, 4.5rem);
  letter-spacing: var(--letter-spacing-heading);
  margin: 0 0 0.5rem 0;
  background: var(--gradient-highlight);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  line-height: 1.15;
}

.page-news__hero-sub {
  font-size: clamp(0.95rem, 2.5vw, 1.35rem);
  color: var(--color-text-secondary);
  letter-spacing: 0.2em;
  margin: 0;
  font-weight: 400;
  border-top: 2px solid rgba(230,57,70,0.3);
  border-bottom: 2px solid rgba(230,57,70,0.3);
  display: inline-block;
  padding: 0.4rem 1rem;
  backdrop-filter: blur(2px);
}

.page-news__hero-visual {
  position: relative;
  width: 100%;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(230,57,70,0.15);
}

.page-news__hero-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  object-position: center 30%;
}

.page-news__hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,12,16,0.6) 0%, transparent 50%, rgba(11,12,16,0.3) 100%);
  pointer-events: none;
}

/* ---------- 通用 Section ---------- */
.page-news__section {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  padding: 2.5rem 1.25rem;
  box-sizing: border-box;
}

.page-news__section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.5rem;
  border-bottom: 2px solid rgba(192,192,192,0.15);
  padding-bottom: 0.75rem;
  flex-wrap: wrap;
}

.page-news__section-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: clamp(1.6rem, 5vw, 2.6rem);
  letter-spacing: var(--letter-spacing-heading);
  margin: 0;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.page-news__section-badge {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--news-silver);
  background: rgba(192,192,192,0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  border: 1px solid rgba(192,192,192,0.2);
  text-transform: uppercase;
}

.page-news__section-footer {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(192,192,192,0.1);
  flex-wrap: wrap;
  justify-content: center;
}

/* ---------- 时间轴容器 ---------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-left: 0;
}

.timeline__line {
  display: none;
}

/* ---------- 时间轴卡片 (移动端优先) ---------- */
.timeline__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 1rem;
  border-left: 4px solid var(--news-red);
  scroll-margin-top: 5rem;
}

.timeline__card[data-category="brand"] {
  border-left-color: var(--news-red);
}

.timeline__card[data-category="feature"] {
  border-left-color: var(--news-blue);
}

.timeline__card[data-category="insight"] {
  border-left-color: var(--news-orange);
}

.timeline__node {
  display: none;
}

.timeline__content {
  padding: 1.5rem;
  border-radius: 1rem;
  background: var(--news-bg-card);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(192,192,192,0.12);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline__content:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(230,57,70,0.18);
}

.timeline__card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.timeline__card-category {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.2rem 0.75rem;
  border-radius: 20px;
  background: rgba(230,57,70,0.15);
  color: var(--news-red);
  border: 1px solid rgba(230,57,70,0.3);
}

.timeline__card-category[data-category="brand"] {
  background: rgba(230,57,70,0.15);
  color: var(--news-red);
  border-color: rgba(230,57,70,0.3);
}

.timeline__card-category[data-category="feature"] {
  background: rgba(29,53,87,0.25);
  color: #6d9dc5;
  border-color: rgba(29,53,87,0.4);
}

.timeline__card-category[data-category="insight"] {
  background: rgba(244,162,97,0.18);
  color: var(--news-orange);
  border-color: rgba(244,162,97,0.3);
}

.timeline__card-date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.timeline__card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  letter-spacing: 0.04em;
  margin: 0 0 0.75rem 0;
  color: var(--color-text-primary);
  line-height: 1.3;
}

.timeline__card-body {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.timeline__card-summary {
  margin: 0 0 0.5rem 0;
}

.timeline__card-full {
  display: block;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(192,192,192,0.1);
}

.timeline__card-full p {
  margin: 0 0 0.75rem 0;
}

/* :target 展开逻辑：默认隐藏全文收起状态 */
.timeline__card .timeline__card-full {
  display: none;
}

.timeline__card .timeline__card-close {
  display: none;
}

.timeline__card .timeline__card-toggle {
  display: inline-flex;
}

.timeline__card:target .timeline__card-full {
  display: block;
}

.timeline__card:target .timeline__card-close {
  display: inline-flex;
}

.timeline__card:target .timeline__card-toggle {
  display: none;
}

.timeline__card-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 0.75rem;
  margin: 1rem 0 0 0;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.timeline__card-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

.timeline__card-actions .btn {
  font-size: 0.8rem;
  padding: 0.4rem 1.2rem;
  border-radius: 30px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.25s ease;
}

.timeline__card-actions .btn--outline {
  background: transparent;
  border: 1px solid var(--news-silver);
  color: var(--color-text-secondary);
}

.timeline__card-actions .btn--outline:hover {
  border-color: var(--news-red);
  color: var(--color-text-primary);
  background: rgba(230,57,70,0.08);
}

/* ---------- 网格区域 (行业观察) ---------- */
.page-news__section--grid {
  padding-top: 0.5rem;
}

.page-news__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.grid-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  scroll-margin-top: 5rem;
  border-radius: 1rem;
  overflow: hidden;
}

.grid-card__visual {
  border-radius: 1rem 1rem 0 0;
  overflow: hidden;
  max-height: 240px;
}

.grid-card__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 240px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.grid-card:hover .grid-card__img {
  transform: scale(1.03);
}

.grid-card__content {
  padding: 1.5rem;
  border-radius: 0 0 1rem 1rem;
  background: var(--news-bg-card);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(192,192,192,0.12);
  border-top: none;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.grid-card__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}

.grid-card__category {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  background: rgba(244,162,97,0.18);
  color: var(--news-orange);
  border: 1px solid rgba(244,162,97,0.3);
}

.grid-card__category[data-category="insight"] {
  background: rgba(244,162,97,0.18);
  color: var(--news-orange);
  border-color: rgba(244,162,97,0.3);
}

.grid-card__date {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.grid-card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.8vw, 1.5rem);
  letter-spacing: 0.03em;
  margin: 0 0 0.6rem 0;
  color: var(--color-text-primary);
  line-height: 1.3;
}

.grid-card__body {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.grid-card__summary {
  margin: 0 0 0.4rem 0;
}

.grid-card__full {
  display: none;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(192,192,192,0.1);
}

.grid-card__full p {
  margin: 0;
}

.grid-card__actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.grid-card__actions .btn {
  font-size: 0.8rem;
  padding: 0.4rem 1.2rem;
  border-radius: 30px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all 0.25s ease;
}

.grid-card__actions .btn--outline {
  background: transparent;
  border: 1px solid var(--news-silver);
  color: var(--color-text-secondary);
}

.grid-card__actions .btn--outline:hover {
  border-color: var(--news-red);
  color: var(--color-text-primary);
  background: rgba(230,57,70,0.08);
}

/* :target 逻辑 for grid-card */
.grid-card .grid-card__full {
  display: none;
}

.grid-card .grid-card__close {
  display: none;
}

.grid-card .grid-card__toggle {
  display: inline-flex;
}

.grid-card:target .grid-card__full {
  display: block;
}

.grid-card:target .grid-card__close {
  display: inline-flex;
}

.grid-card:target .grid-card__toggle {
  display: none;
}

/* ---------- scroll-reveal 支持 ---------- */
.page-news .scroll-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.page-news .scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 桌面端 (768px+) ---------- */
@media (min-width: 768px) {
  .page-news__breadcrumb {
    padding: 1rem 2rem;
  }

  .page-news__hero {
    padding: 3rem 2rem 2rem;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
  }

  .page-news__hero-text {
    text-align: left;
    margin-bottom: 0;
    flex: 0 0 auto;
  }

  .page-news__hero-visual {
    flex: 1 1 55%;
    max-width: 65%;
  }

  .page-news__hero-img {
    max-height: 260px;
  }

  .page-news__section {
    padding: 3rem 2rem;
  }

  /* ---------- 时间轴 桌面端 ---------- */
  .timeline {
    padding-left: 2.5rem;
    position: relative;
  }

  .timeline__line {
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--news-timeline-width);
    background: linear-gradient(180deg, var(--news-red), var(--news-orange), var(--news-blue));
    border-radius: 10px;
    opacity: 0.5;
  }

  .timeline__card {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
    padding-left: 2.5rem;
    border-left: none;
    position: relative;
  }

  .timeline__card::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 2rem;
    width: 1.8rem;
    height: var(--news-timeline-width);
    background: var(--news-silver);
    opacity: 0.3;
    border-radius: 4px;
  }

  .timeline__node {
    display: block;
    position: absolute;
    left: calc(-2.5rem - var(--news-node-size) / 2 + var(--news-timeline-width) / 2);
    top: 1.8rem;
    width: var(--news-node-size);
    height: var(--news-node-size);
    border-radius: 50%;
    background: var(--news-red);
    border: 3px solid var(--color-bg-dark);
    box-shadow: 0 0 0 3px rgba(230,57,70,0.25);
    z-index: 1;
    flex-shrink: 0;
  }

  .timeline__card[data-category="brand"] .timeline__node {
    background: var(--news-red);
    box-shadow: 0 0 0 3px rgba(230,57,70,0.25);
  }

  .timeline__card[data-category="feature"] .timeline__node {
    background: var(--news-blue);
    box-shadow: 0 0 0 3px rgba(29,53,87,0.3);
  }

  .timeline__card[data-category="insight"] .timeline__node {
    background: var(--news-orange);
    box-shadow: 0 0 0 3px rgba(244,162,97,0.25);
  }

  .timeline__content {
    flex: 1;
    max-width: 85%;
  }

  .timeline__card-img {
    max-width: 70%;
  }

  /* ---------- 网格 桌面端 ---------- */
  .page-news__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .grid-card {
    flex-direction: column;
  }

  .grid-card__visual {
    max-height: 200px;
  }

  .grid-card__img {
    max-height: 200px;
  }
}

/* ---------- 大屏幕 (1200px+) ---------- */
@media (min-width: 1200px) {
  .page-news__hero {
    padding: 4rem 2rem 2.5rem;
  }

  .page-news__section {
    padding: 4rem 2rem;
  }

  .timeline__content {
    max-width: 78%;
  }

  .timeline__card-img {
    max-width: 60%;
  }

  .page-news__grid {
    gap: 2.5rem;
  }
}

/* ---------- reduced-motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .scroll-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .timeline__content,
  .grid-card__img,
  .grid-card {
    transition: none;
    transform: none;
  }

  .timeline__content:hover {
    transform: none;
  }

  .grid-card:hover .grid-card__img {
    transform: none;
  }
}

.page-news {
  --line-height-body: 1.6;
}