/* ===== 文章中心 · 页面专属样式 ===== */
.page-news {
  --news-accent: var(--primary-green);
  --news-dot-size: 12px;
  --news-line-width: 2px;
  --news-card-radius: 8px;
  --news-transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  color: var(--text-primary);
  background: var(--surface-dark);
  min-height: 100vh;
}

/* ---------- Hero ---------- */
.page-news .news-hero {
  position: relative;
  width: 100%;
  height: 340px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-news .hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: brightness(0.35) saturate(1.1);
  z-index: 0;
}

.page-news .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 26, 46, 0.85) 0%, rgba(0, 230, 118, 0.15) 100%);
  z-index: 1;
}

.page-news .hero-text {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--spacing-lg);
  max-width: var(--container-max);
  width: 100%;
}

.page-news .breadcrumb {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 3;
  font-size: 0.8rem;
  font-family: var(--font-body);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-news .breadcrumb a {
  color: var(--primary-green);
  text-decoration: none;
  transition: color var(--news-transition);
}

.page-news .breadcrumb a:hover {
  color: var(--accent-orange);
}

.page-news .breadcrumb .sep {
  color: var(--border-light);
}

.page-news .hero-title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  line-height: 1.15;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
  letter-spacing: -0.02em;
}

.page-news .hero-desc {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---------- Filter ---------- */
.page-news .news-filter-area {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-sm);
  display: flex;
  justify-content: center;
}

.page-news .news-filter-area input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}

.page-news .filter-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.page-news .filter-label {
  display: inline-block;
  padding: 6px 18px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--surface-card);
  border: 1px solid var(--border-light);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--news-transition);
  user-select: none;
}

.page-news .filter-label:hover {
  border-color: var(--primary-green);
  color: var(--text-primary);
}

/* 选中高亮 */
.page-news #filter-all:checked ~ .filter-labels .filter-label[data-filter="all"],
.page-news #filter-update:checked ~ .filter-labels .filter-label[data-filter="update"],
.page-news #filter-analysis:checked ~ .filter-labels .filter-label[data-filter="analysis"],
.page-news #filter-guide:checked ~ .filter-labels .filter-label[data-filter="guide"] {
  color: var(--surface-dark);
  background: var(--primary-green);
  border-color: var(--primary-green);
  box-shadow: 0 0 20px rgba(0, 230, 118, 0.25);
}

/* ---------- 筛选逻辑：控制卡片显隐 ---------- */
.page-news #filter-update:checked ~ .news-content .timeline-card:not([data-tag="update"]),
.page-news #filter-analysis:checked ~ .news-content .timeline-card:not([data-tag="analysis"]),
.page-news #filter-guide:checked ~ .news-content .timeline-card:not([data-tag="guide"]) {
  display: none;
}

/* ---------- 内容区 ---------- */
.page-news .news-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md) var(--spacing-xl);
}

/* ---------- 时间线章节 ---------- */
.page-news .timeline-section {
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.page-news .section-title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.01em;
}

.page-news .title-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary-green);
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(0, 230, 118, 0.4);
}

/* ---------- 时间线容器 ---------- */
.page-news .timeline {
  position: relative;
  padding-left: 28px;
}

/* 竖线 */
.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: var(--news-line-width);
  background: linear-gradient(180deg, var(--primary-green) 0%, rgba(0, 230, 118, 0.1) 100%);
  border-radius: 2px;
}

/* ---------- 时间线卡片 ---------- */
.page-news .timeline-card {
  position: relative;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--news-transition);
}

/* 圆点 */
.page-news .timeline-dot {
  position: absolute;
  left: -22px;
  top: 20px;
  width: var(--news-dot-size);
  height: var(--news-dot-size);
  border-radius: 50%;
  background: var(--accent-orange);
  border: 2px solid var(--surface-dark);
  box-shadow: 0 0 0 2px var(--accent-orange), 0 0 16px rgba(255, 109, 0, 0.2);
  flex-shrink: 0;
  z-index: 1;
  transition: all var(--news-transition);
}

.page-news .timeline-card:hover .timeline-dot {
  transform: scale(1.25);
  box-shadow: 0 0 0 2px var(--accent-orange), 0 0 28px rgba(255, 109, 0, 0.4);
}

/* ---------- 卡片内容 ---------- */
.page-news .card-content {
  flex: 1;
  min-width: 0;
  background: var(--surface-card);
  border: 1px solid var(--border-light);
  border-radius: var(--news-card-radius);
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
  transition: all var(--news-transition);
  position: relative;
  overflow: hidden;
}

.page-news .timeline-card:hover .card-content {
  border-color: rgba(0, 230, 118, 0.25);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), inset 0 0 0 1px rgba(0, 230, 118, 0.06);
  transform: translateY(-2px);
}

/* 标签 */
.page-news .card-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 10px;
  border-radius: 100px;
  margin-bottom: 8px;
  background: rgba(255, 109, 0, 0.12);
  color: var(--accent-orange);
  border: 1px solid rgba(255, 109, 0, 0.2);
}

.page-news .tag-update {
  background: rgba(0, 230, 118, 0.10);
  color: var(--primary-green);
  border-color: rgba(0, 230, 118, 0.2);
}

.page-news .tag-analysis {
  background: rgba(0, 230, 118, 0.10);
  color: var(--primary-green);
  border-color: rgba(0, 230, 118, 0.2);
}

.page-news .tag-guide {
  background: rgba(255, 109, 0, 0.12);
  color: var(--accent-orange);
  border-color: rgba(255, 109, 0, 0.2);
}

/* 图标 */
.page-news .card-icon {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: 6px;
  float: right;
  margin: 0 0 8px 12px;
  shape-outside: margin-box;
  opacity: 0.85;
  transition: opacity var(--news-transition);
  border: 1px solid var(--border-light);
}

.page-news .timeline-card:hover .card-icon {
  opacity: 1;
}

/* 标题 */
.page-news .card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  margin: 0 0 6px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

/* 摘要（默认可见，短） */
.page-news .card-summary {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0 0 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: all var(--news-transition);
}

/* 完整内容（悬停展开） */
.page-news .card-full {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease, opacity 0.3s ease, margin 0.3s ease;
  opacity: 0;
}

.page-news .timeline-card:hover .card-full {
  max-height: 260px;
  opacity: 1;
  margin-top: 6px;
}

.page-news .timeline-card:hover .card-summary {
  -webkit-line-clamp: unset;
  color: var(--text-primary);
}

/* 卡片内链接 */
.page-news .card-link {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--primary-green);
  text-decoration: none;
  margin-top: 4px;
  transition: color var(--news-transition), gap var(--news-transition);
  position: relative;
}

.page-news .card-link::after {
  content: " ›";
  transition: margin-left 0.2s;
}

.page-news .card-link:hover {
  color: var(--accent-orange);
}

.page-news .card-link:hover::after {
  margin-left: 4px;
}

/* ---------- 带图片的卡片特殊处理 ---------- */
.page-news .card-figure {
  margin: 12px 0 4px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface-dark);
  border: 1px solid var(--border-light);
  transition: border-color var(--news-transition);
}

.page-news .card-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.page-news .card-figure figcaption {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--text-secondary);
  padding: 4px 10px 6px;
  background: rgba(11, 26, 46, 0.6);
  text-align: center;
  letter-spacing: 0.03em;
}

.page-news .timeline-card:hover .card-figure img {
  transform: scale(1.02);
}

.page-news .timeline-card:hover .card-figure {
  border-color: rgba(0, 230, 118, 0.15);
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 768px) {
  .page-news .news-hero {
    height: 400px;
  }

  .page-news .breadcrumb {
    left: 32px;
    top: 24px;
    font-size: 0.9rem;
  }

  .page-news .news-filter-area {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-md);
  }

  .page-news .filter-label {
    padding: 8px 24px;
    font-size: 0.9rem;
  }

  .page-news .news-content {
    padding: 0 var(--spacing-lg) var(--spacing-xl);
  }

  .page-news .timeline {
    padding-left: 44px;
  }

  .page-news .timeline::before {
    left: 10px;
  }

  .page-news .timeline-dot {
    left: -34px;
    top: 24px;
    width: 16px;
    height: 16px;
  }

  .page-news .card-content {
    padding: var(--spacing-lg);
  }

  .page-news .card-title {
    font-size: 1.25rem;
  }

  .page-news .card-icon {
    width: 60px;
    height: 60px;
  }

  .page-news .card-full {
    font-size: 0.95rem;
  }

  .page-news .timeline-card--with-media .card-content {
    display: flow-root;
  }

  .page-news .card-figure {
    max-width: 360px;
  }

  .page-news .card-figure img {
    max-height: 220px;
    object-fit: cover;
  }

  /* 更宽敞的卡片悬停效果 */
  .page-news .timeline-card:hover .card-content {
    transform: translateY(-4px) scale(1.005);
    box-shadow: 0 12px 44px rgba(0, 0, 0, 0.4), inset 0 0 0 1px rgba(0, 230, 118, 0.08);
  }
}

@media (min-width: 1024px) {
  .page-news .hero-title {
    font-size: 3.2rem;
  }

  .page-news .news-content {
    padding: 0 var(--spacing-xl) var(--spacing-xl);
  }

  .page-news .timeline-section {
    margin-bottom: calc(var(--spacing-xl) * 1.5);
  }

  .page-news .timeline-card {
    margin-bottom: calc(var(--spacing-lg) * 1.2);
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-news .card-full {
    max-height: none;
    opacity: 1;
    margin-top: 6px;
  }

  .page-news .card-summary {
    -webkit-line-clamp: unset;
  }

  .page-news .timeline-card:hover .card-content {
    transform: none;
  }

  .page-news .card-figure img {
    transform: none !important;
  }

  .page-news .timeline-dot {
    transform: none !important;
  }
}

/* ---------- 窄屏安全 ---------- */
@media (max-width: 420px) {
  .page-news .news-hero {
    height: 280px;
  }

  .page-news .hero-text {
    padding: var(--spacing-md);
  }

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

  .page-news .hero-desc {
    font-size: 0.85rem;
  }

  .page-news .timeline {
    padding-left: 22px;
  }

  .page-news .timeline-dot {
    left: -18px;
    width: 10px;
    height: 10px;
  }

  .page-news .card-content {
    padding: 12px;
  }

  .page-news .card-icon {
    width: 40px;
    height: 40px;
    margin: 0 0 6px 8px;
  }

  .page-news .card-title {
    font-size: 0.95rem;
  }

  .page-news .card-summary {
    font-size: 0.82rem;
  }

  .page-news .card-full {
    font-size: 0.82rem;
  }

  .page-news .filter-label {
    font-size: 0.75rem;
    padding: 5px 12px;
  }
}