/* ============================================
   news.css — 产品动态/新闻页面专属样式
   ============================================ */

/* ════════════════════════════════════════════
   Hero — 蓝色渐变大横幅
   ════════════════════════════════════════════ */
.news-hero {
  position: relative;
  padding: calc(var(--header-height) + 60px) 0 60px;
  overflow: hidden;
  background: linear-gradient(135deg, #0033a0 0%, #1456d6 40%, #3a87e8 80%, #5fb3f5 100%);
  min-height: 340px;
  display: flex;
  align-items: center;
}

.news-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* Subtle dot grid */
.news-hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.12) 1px, transparent 1px);
  background-size: 36px 36px;
}

/* Wave / blob shapes */
.news-hero-wave {
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 80px;
  overflow: hidden;
}

.news-hero-wave svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* Floating sparkles */
.news-hero-sparkle {
  position: absolute;
  border-radius: 50%;
  background: white;
  opacity: 0.2;
  animation: newsSparkle 3s ease-in-out infinite;
}
.news-hero-sparkle:nth-child(1) { width: 8px; height: 8px; top: 20%; right: 35%; animation-delay: 0s; }
.news-hero-sparkle:nth-child(2) { width: 5px; height: 5px; top: 60%; right: 25%; animation-delay: 0.8s; }
.news-hero-sparkle:nth-child(3) { width: 10px; height: 10px; top: 35%; right: 15%; animation-delay: 1.6s; }
.news-hero-sparkle:nth-child(4) { width: 6px; height: 6px; top: 70%; right: 42%; animation-delay: 0.4s; }

@keyframes newsSparkle {
  0%, 100% { opacity: 0.15; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(1.4); }
}

.news-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-8);
  align-items: center;
}

.news-hero-content {}

.news-hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 900;
  color: white;
  line-height: 1.15;
  margin-bottom: var(--spacing-6);
  letter-spacing: 0.02em;
}

.news-hero-tagline {
  display: inline-flex;
  align-items: center;
  padding: 10px 28px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-size: var(--font-size-md);
  color: white;
  letter-spacing: 0.02em;
}

/* Decorative visual on right */
.news-hero-visual {
  width: 280px;
  height: 200px;
  position: relative;
  flex-shrink: 0;
}

.nhv-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.15);
}
.nhv-ring-1 { width: 200px; height: 200px; top: 0; right: 0; }
.nhv-ring-2 { width: 140px; height: 140px; top: 30px; right: 30px; border-color: rgba(255,255,255,0.25); }
.nhv-ring-3 { width: 80px; height: 80px; top: 60px; right: 60px; border-color: rgba(255,255,255,0.4); }

.nhv-center {
  position: absolute;
  top: 50%; right: 80px;
  transform: translate(50%, -50%);
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nhv-center svg {
  width: 24px; height: 24px;
  stroke: white;
}

.nhv-card {
  position: absolute;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-md);
  padding: var(--spacing-3) var(--spacing-4);
  white-space: nowrap;
}

.nhv-card-1 { top: 10px; left: 0; }
.nhv-card-2 { bottom: 20px; right: 0; }

.nhv-card-text {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.9);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nhv-dot {
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: white;
  opacity: 0.6;
}
.nhv-dot-1 { top: 15%; left: 8%; }
.nhv-dot-2 { top: 60%; right: 5%; }
.nhv-dot-3 { bottom: 20%; left: 20%; }

/* ════════════════════════════════════════════
   通用 — 加载错误提示
   ════════════════════════════════════════════ */
.news-error {
  text-align: center;
  padding: var(--spacing-16) 0;
  color: var(--color-error);
  font-size: var(--font-size-md);
}

/* ════════════════════════════════════════════
   卡片网格 — 资讯首页
   ════════════════════════════════════════════ */
.news-cards-section {
  background: var(--color-bg);
  padding: var(--spacing-16) 0 var(--spacing-20);
}

.news-cards-header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.news-cards-title {
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-2);
}

.news-cards-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.news-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.news-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.news-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.news-card-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-size: cover;
  background-position: center;
  background-color: var(--color-bg-alt);
}

.news-card-cover--placeholder {
  background: linear-gradient(135deg, #4364F7 0%, #6FB1FC 100%);
}

.news-card-body {
  padding: var(--spacing-5) var(--spacing-4) var(--spacing-4);
}

.news-card-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--spacing-3);
}

.news-card-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* 查看更多按钮 */
.news-cards-more {
  text-align: center;
  margin-top: var(--spacing-12);
}

.news-more-btn {
  display: inline-block;
  padding: var(--spacing-3) var(--spacing-10);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.news-more-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ════════════════════════════════════════════
   搜索栏
   ════════════════════════════════════════════ */
.news-search {
  position: relative;
  max-width: 480px;
  margin-bottom: var(--spacing-8);
}

.news-search-icon {
  position: absolute;
  left: var(--spacing-4);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.news-search-input {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-10) var(--spacing-3) var(--spacing-10);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.news-search-input::placeholder {
  color: var(--color-text-muted);
}

.news-search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(67, 100, 247, 0.12);
}

.news-search-clear {
  position: absolute;
  right: var(--spacing-3);
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: none;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  font-size: 1.2rem;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: 50%;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.news-search-clear:hover {
  background: var(--color-bg-alt);
  color: var(--color-text-primary);
}

.news-search-clear.is-visible {
  display: flex;
}

/* 空状态提示 */
.news-list-empty {
  text-align: center;
  padding: var(--spacing-16) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-md);
}

/* ════════════════════════════════════════════
   列表视图 — 资讯列表页
   ════════════════════════════════════════════ */
.news-list-section {
  background: var(--color-bg);
  padding: var(--spacing-12) 0 var(--spacing-20);
}

.news-list-header {
  margin-bottom: var(--spacing-8);
}

.news-list-heading {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  padding-bottom: var(--spacing-3);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.news-list-body {
  display: flex;
  flex-direction: column;
}

.news-list-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
  padding: var(--spacing-4) 0;
  border-bottom: 1px solid var(--color-border-light);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
}

.news-list-row:hover {
  background: var(--color-bg-alt);
}

.news-list-title {
  flex: 1;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  line-height: 1.6;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-list-row:hover .news-list-title {
  color: var(--color-primary);
}

.news-list-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  flex-shrink: 0;
}

.news-list-tag {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.news-list-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ════════════════════════════════════════════
   分页控件
   ════════════════════════════════════════════ */
.news-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-12);
  flex-wrap: wrap;
}

.news-page-btn,
.news-page-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  min-width: 36px;
  height: 36px;
}

.news-page-btn:hover,
.news-page-num:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.news-page-btn--disabled {
  color: var(--color-text-muted);
  opacity: 0.5;
  pointer-events: none;
}

.news-page-num--active {
  background: var(--color-primary);
  color: white;
}

.news-page-num--active:hover {
  background: var(--color-primary);
  color: white;
}

.news-page-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ════════════════════════════════════════════
   详情页
   ════════════════════════════════════════════ */
.news-detail-section {
  background: var(--color-bg);
  padding: calc(var(--header-height) + var(--spacing-12)) 0 var(--spacing-20);
}

.news-detail-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.news-detail-head {
  margin-bottom: var(--spacing-10);
  padding-bottom: var(--spacing-6);
  border-bottom: 1px solid var(--color-border-light);
}

.news-detail-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.4;
  margin-bottom: var(--spacing-4);
}

.news-detail-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.news-detail-body {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.85;
}

.news-detail-body p {
  margin-bottom: var(--spacing-5);
}

.news-detail-body h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: var(--spacing-10) 0 var(--spacing-5);
  padding-bottom: var(--spacing-3);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.news-detail-body h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: var(--spacing-8) 0 var(--spacing-4);
}

.news-detail-body h4 {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text-primary);
  margin: var(--spacing-6) 0 var(--spacing-3);
}

.news-detail-body ul,
.news-detail-body ol {
  margin: var(--spacing-4) 0 var(--spacing-6);
  padding-left: var(--spacing-6);
}

.news-detail-body li {
  margin-bottom: var(--spacing-3);
  line-height: 1.75;
}

.news-detail-body strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.news-detail-body blockquote {
  margin: var(--spacing-6) 0;
  padding: var(--spacing-4) var(--spacing-6);
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.news-detail-body img {
  max-width: 100% !important;
  height: auto !important;
  border-radius: var(--radius-md);
  margin: var(--spacing-6) 0;
  display: block;
  width: auto;
}

/* 微信公众号文章 HTML 兼容 */
.news-detail-body section {
  max-width: 100% !important;
  box-sizing: border-box;
}

.news-detail-body * {
  max-width: 100%;
  box-sizing: border-box;
}

.news-detail-loading {
  text-align: center;
  padding: var(--spacing-16) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-md);
}

.news-detail-body .article-part-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-1);
}

.news-detail-body .article-part-num {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--spacing-3);
}

.news-detail-body .article-highlight {
  background: linear-gradient(135deg, rgba(67,100,247,0.06) 0%, rgba(111,177,252,0.06) 100%);
  border-radius: var(--radius-md);
  padding: var(--spacing-6);
  margin: var(--spacing-6) 0;
}

.news-detail-body .article-points {
  list-style: none;
  padding-left: 0;
  margin: var(--spacing-4) 0 var(--spacing-6);
}

.news-detail-body .article-points li {
  padding-left: var(--spacing-6);
  position: relative;
  margin-bottom: var(--spacing-4);
}

.news-detail-body .article-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.news-detail-empty {
  text-align: center;
  padding: var(--spacing-20) 0;
}

.news-detail-empty p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-6);
}

.news-detail-back {
  display: inline-block;
  padding: var(--spacing-3) var(--spacing-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.news-detail-back:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* 上下篇导航 */
.news-detail-nav {
  display: flex;
  gap: var(--spacing-6);
  margin-top: var(--spacing-12);
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-border-light);
}

.news-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-5);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
}

.news-nav-item:hover {
  background: var(--color-bg-alt);
}

.news-nav-next {
  text-align: right;
}

.news-nav-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.news-nav-title {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ════════════════════════════════════════════
   Changelog Section
   ════════════════════════════════════════════ */
.news-log {
  background: var(--color-bg);
  padding: var(--spacing-20) 0 var(--spacing-24);
}

.news-log-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.news-log-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-3);
}

.news-log-sub {
  font-size: var(--font-size-base);
  color: var(--color-primary);
  font-weight: 500;
}

/* Log list */
.news-log-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-log-entry {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 0;
  position: relative;
}

/* Vertical connector line between entries */
.news-log-entry:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 100px;
  top: 24px;
  bottom: -32px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(67,100,247,0.3), rgba(67,100,247,0.05));
  transform: translateX(-50%);
}

.news-log-date {
  padding-top: 4px;
  padding-right: var(--spacing-6);
  text-align: right;
  flex-shrink: 0;
}

.news-log-date-day {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.news-log-date-year {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Dot node */
.news-log-node {
  position: absolute;
  left: 100px;
  top: 8px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(67,100,247,0.15);
  transform: translateX(-50%);
  z-index: 1;
}

.news-log-body {
  padding: 0 0 var(--spacing-12) var(--spacing-8);
  border-left: 2px solid transparent; /* spacing for the dot */
}

.news-log-headline {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-5);
  padding-left: var(--spacing-3);
  border-left: 3px solid var(--color-primary);
  line-height: 1.4;
}

.news-log-paras {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.news-log-para {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.85;
}

/* Stagger for entries */
.news-log-list .news-log-entry:nth-child(1) { transition-delay: 0s; }
.news-log-list .news-log-entry:nth-child(2) { transition-delay: 0.12s; }
.news-log-list .news-log-entry:nth-child(3) { transition-delay: 0.24s; }

/* ════════════════════════════════════════════
   Responsive
   ════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .news-hero-visual {
    width: 200px; height: 160px;
  }
  .nhv-ring-1 { width: 160px; height: 160px; }
  .nhv-ring-2 { width: 110px; height: 110px; top: 25px; right: 25px; }
  .nhv-ring-3 { width: 60px; height: 60px; top: 50px; right: 50px; }

  .news-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .news-hero {
    padding: calc(var(--header-height) + 48px) 0 48px;
  }
  .news-hero-inner {
    grid-template-columns: 1fr;
  }
  .news-hero-visual {
    display: none;
  }

  .news-cards-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .news-list-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-2);
  }
  .news-list-title {
    white-space: normal;
  }
  .news-list-meta {
    width: 100%;
    justify-content: space-between;
  }

  .news-detail-nav {
    flex-direction: column;
    gap: var(--spacing-4);
  }
  .news-nav-next {
    text-align: left;
  }

  .news-log-entry {
    grid-template-columns: 80px 1fr;
  }
  .news-log-entry:not(:last-child)::after {
    left: 80px;
  }
  .news-log-node {
    left: 80px;
  }
  .news-log-date-day {
    font-size: 1.2rem;
  }
}

@media (max-width: 479px) {
  .news-hero-title {
    font-size: 2rem;
  }
  .news-log-entry {
    grid-template-columns: 64px 1fr;
  }
  .news-log-entry:not(:last-child)::after {
    left: 64px;
  }
  .news-log-node { left: 64px; }
  .news-log-date-day { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .news-hero-sparkle { animation: none; }
}