/* ========================================
   Page: news (最新动态)
   专属样式 .page-news 作用域
   ======================================== */

/* ------ 自定义变量（作用域限定） ------ */
.page-news {
  --news-timeline-accent: #C9A84C;
  --news-timeline-line: rgba(201, 168, 76, 0.25);
  --news-card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --news-card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
  --news-bg-alt: #F0F0EA;
  --news-badge-green: #0A3D2C;
  --news-badge-gold: #C9A84C;
  --news-spacing-section: 48px;
  --max-width: 1200px;
}

/* ------ 基本布局 ------ */
.page-news {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 16px 48px;
  font-family: var(--font-body, Georgia, serif);
  color: var(--color-text, #1A1A1A);
  background-color: var(--color-bg, #F5F5F0);
}

@media (min-width: 768px) {
  .page-news {
    padding: 32px 32px 64px;
  }
}

@media (min-width: 1200px) {
  .page-news {
    padding: 40px 48px 80px;
  }
}

/* ------ 面包屑 ------ */
.page-news .breadcrumb {
  font-family: var(--font-mono, "Courier New", monospace);
  font-size: 0.8rem;
  margin-bottom: 20px;
  color: var(--color-text-secondary, #4A4A4A);
  letter-spacing: 0.02em;
}

.page-news .breadcrumb a {
  color: var(--color-text-secondary, #4A4A4A);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.page-news .breadcrumb a:hover {
  color: var(--color-primary, #0A3D2C);
  border-bottom-color: var(--color-accent, #C9A84C);
}

.page-news .breadcrumb span[aria-current="page"] {
  color: var(--color-primary, #0A3D2C);
  font-weight: 600;
}

/* ------ 页面顶部 Hero ------ */
.page-news__hero {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  margin-bottom: 40px;
  background: linear-gradient(135deg, var(--color-primary-dark, #06291D) 0%, var(--color-primary, #0A3D2C) 100%);
}

.page-news__hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.3;
}

.page-news__hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.page-news__hero-content {
  position: relative;
  z-index: 2;
  padding: 32px 24px;
  color: var(--color-text-on-primary, #FFFFFF);
}

@media (min-width: 768px) {
  .page-news__hero-content {
    padding: 48px 40px;
  }
}

@media (min-width: 1200px) {
  .page-news__hero-content {
    padding: 56px 48px;
  }
}

.page-news__hero-tag {
  display: inline-block;
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent, #C9A84C);
  background: rgba(201, 168, 76, 0.15);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  border: 1px solid rgba(201, 168, 76, 0.3);
}

.page-news__hero-title {
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-size: 2.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 8px;
  color: #FFFFFF;
  line-height: 1.1;
}

@media (min-width: 768px) {
  .page-news__hero-title {
    font-size: 3.5rem;
  }
}

@media (min-width: 1200px) {
  .page-news__hero-title {
    font-size: 4.5rem;
  }
}

.page-news__hero-desc {
  font-family: var(--font-body, Georgia, serif);
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  line-height: 1.6;
  margin: 0;
}

@media (min-width: 768px) {
  .page-news__hero-desc {
    font-size: 1.125rem;
  }
}

/* ------ 时间线容器 ------ */
.page-news__timeline {
  position: relative;
  padding-left: 0;
}

/* 时间线竖线 */
@media (min-width: 768px) {
  .page-news__timeline {
    padding-left: 48px;
  }

  .page-news__timeline::before {
    content: "";
    position: absolute;
    left: 14px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--news-timeline-line);
    border-radius: 2px;
  }
}

/* ------ 章节标题 ------ */
.page-news__section {
  margin-bottom: var(--news-spacing-section);
  position: relative;
}

.page-news__section-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.page-news__section-number {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  background: var(--color-accent, #C9A84C);
  color: var(--color-text-on-accent, #1A1A1A);
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-weight: 800;
  font-size: 1rem;
  border-radius: 50%;
  line-height: 1;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .page-news__section-number {
    position: absolute;
    left: -48px;
    top: 4px;
    width: 36px;
    height: 36px;
  }
}

.page-news__section-header-text {
  flex: 1;
}

.page-news__section-title {
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary, #0A3D2C);
  margin: 0 0 4px;
  line-height: 1.2;
}

@media (min-width: 768px) {
  .page-news__section-title {
    font-size: 1.75rem;
  }
}

.page-news__section-sub {
  font-family: var(--font-body, Georgia, serif);
  font-size: 0.9rem;
  color: var(--color-text-secondary, #4A4A4A);
  margin: 0;
  font-style: italic;
}

/* ------ 卡片通用样式 ------ */
.page-news__card {
  background: var(--color-surface, #FFFFFF);
  border-radius: 12px;
  box-shadow: var(--news-card-shadow);
  padding: 20px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: 1px solid var(--color-border, #D6D6CC);
  transition: box-shadow 0.3s ease-out, transform 0.3s ease-out;
  position: relative;
}

@media (hover: hover) {
  .page-news__card:hover {
    box-shadow: var(--news-card-shadow-hover);
    transform: translateY(-2px);
  }
}

@media (min-width: 768px) {
  .page-news__card {
    padding: 24px;
    flex-direction: row;
    align-items: flex-start;
    gap: 24px;
  }
}

/* 特色卡片（最新版本） */
.page-news__card--featured {
  border-left: 4px solid var(--color-accent, #C9A84C);
  background: linear-gradient(to right, rgba(201, 168, 76, 0.04), var(--color-surface, #FFFFFF));
}

.page-news__card--secondary {
  background: var(--news-bg-alt);
  border-color: transparent;
}

.page-news__card--compact {
  padding: 16px 20px;
}

@media (min-width: 768px) {
  .page-news__card--compact {
    flex-direction: column;
  }
}

.page-news__card--preview {
  border: 1px dashed var(--color-accent-dark, #A68A2E);
  background: rgba(201, 168, 76, 0.03);
}

/* ------ 卡片图标 ------ */
.page-news__card-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-news__card-icon svg {
  width: 40px;
  height: 40px;
}

@media (min-width: 768px) {
  .page-news__card-icon svg {
    width: 48px;
    height: 48px;
  }
}

/* ------ 卡片内容 ------ */
.page-news__card-body {
  flex: 1;
  min-width: 0;
}

.page-news__card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.page-news__card-date {
  font-family: var(--font-mono, "Courier New", monospace);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #4A4A4A);
  letter-spacing: 0.02em;
}

.page-news__card-badge {
  display: inline-block;
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--news-badge-green);
  color: #FFFFFF;
  line-height: 1.2;
}

.page-news__card-badge--optimize {
  background: var(--color-primary-light, #1B5E3A);
}

.page-news__card-badge--data {
  background: var(--color-accent-dark, #A68A2E);
  color: #FFFFFF;
}

.page-news__card-badge--plan {
  background: transparent;
  color: var(--news-badge-gold);
  border: 1px solid var(--news-badge-gold);
}

.page-news__card-title {
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary, #0A3D2C);
  margin: 0 0 8px;
  line-height: 1.3;
}

@media (min-width: 768px) {
  .page-news__card-title {
    font-size: 1.2rem;
  }
}

.page-news__card-text {
  font-family: var(--font-body, Georgia, serif);
  font-size: 0.925rem;
  line-height: 1.7;
  color: var(--color-text, #1A1A1A);
  margin: 0 0 12px;
}

.page-news__card-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
}

.page-news__card-list li {
  font-family: var(--font-body, Georgia, serif);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #4A4A4A);
  padding: 3px 0 3px 18px;
  position: relative;
}

.page-news__card-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent, #C9A84C);
  font-weight: 600;
}

.page-news__card-list--inline {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin: 8px 0 0;
}

.page-news__card-list--inline li::before {
  content: "·";
  font-weight: 800;
}

/* 可展开内容 */
.page-news__card-extra {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.4s ease-out, opacity 0.3s ease-out, margin 0.3s ease-out;
  margin: 0;
}

.page-news__card-extra[data-expandable-content].is-open {
  max-height: 500px;
  opacity: 1;
  margin: 12px 0 0;
}

.page-news__card-toggle {
  display: inline-block;
  background: none;
  border: none;
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent, #C9A84C);
  cursor: pointer;
  padding: 4px 0;
  transition: color 0.2s;
  border-bottom: 1px solid transparent;
}

.page-news__card-toggle:hover {
  color: var(--color-accent-dark, #A68A2E);
  border-bottom-color: currentColor;
}

.btn--small {
  font-size: 0.8rem;
  padding: 8px 18px;
}

.btn--accent {
  background: var(--color-accent, #C9A84C);
  color: var(--color-text-on-accent, #1A1A1A);
  border: none;
  border-radius: 6px;
  font-family: var(--font-heading, Montserrat, sans-serif);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  display: inline-block;
  transition: background 0.25s, transform 0.2s;
}

.btn--accent:hover {
  background: var(--color-accent-dark, #A68A2E);
  transform: scale(1.02);
}

/* ------ 卡片图片 ------ */
.page-news__card-image {
  flex-shrink: 0;
  width: 100%;
  max-width: 120px;
  order: -1;
  align-self: center;
}

.page-news__card-image img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
  display: block;
}

@media (min-width: 768px) {
  .page-news__card-image {
    order: 1;
    max-width: 150px;
  }
}

.page-news__card-image--wide {
  max-width: 100%;
  width: 100%;
  order: -1;
}

@media (min-width: 768px) {
  .page-news__card-image--wide {
    max-width: 280px;
    order: 1;
  }
}

.page-news__card-image--preview {
  max-width: 100%;
  width: 100%;
  order: -1;
}

@media (min-width: 768px) {
  .page-news__card-image--preview {
    max-width: 200px;
    order: 1;
  }
}

/* ------ 底部链接区域 ------ */
.page-news__bottom-links {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border, #D6D6CC);
  text-align: center;
}

.page-news__bottom-text {
  font-family: var(--font-body, Georgia, serif);
  font-size: 0.95rem;
  color: var(--color-text-secondary, #4A4A4A);
  margin: 0;
}

.page-news__bottom-text a {
  color: var(--color-primary, #0A3D2C);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent, #C9A84C);
  transition: color 0.2s, border-color 0.2s;
}

.page-news__bottom-text a:hover {
  color: var(--color-accent-dark, #A68A2E);
  border-bottom-color: currentColor;
}

/* ------ 响应式微调 ------ */
@media (max-width: 480px) {
  .page-news {
    padding: 16px;
  }

  .page-news__hero-content {
    padding: 24px 16px;
  }

  .page-news__hero-title {
    font-size: 1.75rem;
  }

  .page-news__hero-desc {
    font-size: 0.9rem;
  }

  .page-news__section-title {
    font-size: 1.2rem;
  }

  .page-news__card {
    padding: 16px;
  }

  .page-news__card-icon svg {
    width: 32px;
    height: 32px;
  }

  .page-news__card-image {
    max-width: 80px;
  }

  .page-news__card-image--wide {
    max-width: 100%;
  }

  .page-news__card-image--preview {
    max-width: 100%;
  }
}

/* 确保所有图片自适应 */
.page-news img {
  max-width: 100%;
  height: auto;
}