/* ===== 品牌日志页专属样式 ===== */
.page-news {
  --color-gold: #FFD700;
  --color-accent: #E94560;
  --color-primary: #1A1A2E;
  --color-navy: #0F3460;
  --color-cream: #F5E6CC;
  --color-white: #FFFFFF;
  --color-dark: #333333;
  --color-gray: #CCCCCC;
  --font-heading: 'Montserrat', 'Helvetica Neue', 'Arial Black', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-accent: 'Oswald', 'Impact', sans-serif;
  --max-width: 1200px;
  --gap: 24px;
  --radius: 6px;
  --transition: 0.25s ease;

  background-color: var(--color-primary);
  color: var(--color-cream);
  padding: 0 0 60px;
  font-family: var(--font-body);
}

/* ---- 面包屑 ---- */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-gray);
  padding: 20px 0 8px;
  letter-spacing: 0.5px;
}

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

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  opacity: 0.7;
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
}

.page-news .breadcrumb__current {
  color: var(--color-cream);
  font-weight: 600;
}

/* ---- 页面标题 ---- */
.page-news__title {
  font-family: var(--font-heading);
  font-weight: 300;
  font-size: clamp(2.4rem, 8vw, 5rem);
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--color-white);
  margin: 0 0 12px;
  line-height: 1.1;
  border-left: 4px solid var(--color-gold);
  padding-left: 20px;
}

/* ---- 筛选标签 ---- */
.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 40px;
  padding: 0;
}

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

.page-news__filters label {
  display: inline-block;
  padding: 8px 20px;
  font-family: var(--font-accent);
  font-weight: 400;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-gray);
  background: transparent;
  border: 1px solid rgba(255, 215, 0, 0.25);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.page-news__filters label:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: rgba(255, 215, 0, 0.06);
}

.page-news__filters input[type="radio"]:focus-visible + label {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.page-news__filters input[type="radio"]:checked + label {
  color: var(--color-primary);
  background: var(--color-gold);
  border-color: var(--color-gold);
  font-weight: 600;
}

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

/* 时间线竖线（贯穿所有章节） */
.page-news__timeline::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold), rgba(255, 215, 0, 0.15));
  border-radius: 1px;
  pointer-events: none;
}

/* ---- 每个章节 ---- */
.page-news__chapter {
  position: relative;
  margin-bottom: 56px;
  padding-left: 48px;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* 筛选隐藏逻辑 */
#filter-updates:checked ~ .page-news__timeline .page-news__chapter[data-category]:not([data-category="updates"]),
#filter-leagues:checked ~ .page-news__timeline .page-news__chapter[data-category]:not([data-category="leagues"]),
#filter-guide:checked ~ .page-news__timeline .page-news__chapter[data-category]:not([data-category="guide"]),
#filter-insights:checked ~ .page-news__timeline .page-news__chapter[data-category]:not([data-category="insights"]) {
  display: none;
}

/* 全部选中时所有章节可见 */
#filter-all:checked ~ .page-news__timeline .page-news__chapter {
  display: block;
}

/* ---- 章节头部（含节点） ---- */
.page-news__chapter-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  position: relative;
}

.page-news__chapter-dot {
  position: absolute;
  left: -48px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-gold);
  border: 3px solid var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-gold);
  flex-shrink: 0;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: default;
}

.page-news__chapter-dot:hover {
  transform: translateY(-50%) scale(1.18);
  box-shadow: 0 0 0 4px var(--color-gold), 0 0 20px rgba(255, 215, 0, 0.35);
}

.page-news__chapter-title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-white);
  margin: 0;
  line-height: 1.2;
}

/* ---- 章节配图 ---- */
.page-news__chapter-visual {
  margin-bottom: 20px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-navy);
  position: relative;
}

.page-news__chapter-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  transition: transform 0.4s ease;
}

.page-news__chapter-visual:hover .page-news__chapter-img {
  transform: scale(1.02);
}

/* ---- 文章卡片列表 ---- */
.page-news__cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---- 单篇文章卡片 ---- */
.page-news__card {
  position: relative;
  padding-left: 36px;
  transition: opacity 0.3s ease;
}

.page-news__card-dot {
  position: absolute;
  left: -30px;
  top: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-gold);
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 0 1.5px rgba(255, 215, 0, 0.5);
  flex-shrink: 0;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: default;
}

.page-news__card-dot:hover {
  transform: scale(1.25);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.45), 0 0 16px rgba(255, 215, 0, 0.25);
}

.page-news__card-inner {
  background: rgba(245, 230, 204, 0.06);
  border: 1px solid rgba(255, 215, 0, 0.12);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-news__card:hover .page-news__card-inner,
.page-news__card:focus-within .page-news__card-inner {
  background: rgba(245, 230, 204, 0.10);
  border-color: rgba(255, 215, 0, 0.30);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.30);
}

.page-news__card-meta {
  display: inline-block;
  font-family: var(--font-accent);
  font-weight: 400;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-gold);
  margin-bottom: 4px;
  opacity: 0.8;
}

.page-news__card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--color-white);
  margin: 0 0 6px;
  line-height: 1.3;
  letter-spacing: 0.5px;
}

.page-news__card-summary {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.95rem;
  color: var(--color-cream);
  line-height: 1.6;
  margin: 0 0 8px;
  opacity: 0.85;
}

/* ---- 展开全文 (details/summary) ---- */
.page-news__details {
  margin-top: 4px;
  font-size: 0.9rem;
}

.page-news__details summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-accent);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-gold);
  cursor: pointer;
  padding: 4px 0;
  border-radius: 2px;
  transition: opacity var(--transition);
  list-style: none;
}

.page-news__details summary::-webkit-details-marker {
  display: none;
}

.page-news__details summary::before {
  content: '▸';
  display: inline-block;
  transition: transform 0.2s ease;
  font-size: 0.9rem;
  line-height: 1;
}

.page-news__details[open] summary::before {
  transform: rotate(90deg);
}

.page-news__details summary:hover,
.page-news__details summary:focus-visible {
  opacity: 0.75;
  outline: none;
  text-decoration: underline;
}

.page-news__details summary:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
}

.page-news__fulltext {
  padding: 12px 0 4px;
  color: var(--color-cream);
  line-height: 1.8;
  font-size: 0.92rem;
  opacity: 0.9;
  border-top: 1px solid rgba(255, 215, 0, 0.12);
  margin-top: 8px;
}

.page-news__fulltext p {
  margin: 0 0 8px;
}

.page-news__fulltext p:last-child {
  margin-bottom: 0;
}

/* ---- 页尾更多链接 ---- */
.page-news__more {
  margin-top: 48px;
  padding: 24px 20px;
  text-align: center;
  border-top: 1px solid rgba(255, 215, 0, 0.10);
  color: var(--color-gray);
  font-size: 0.9rem;
}

.page-news__more-link {
  color: var(--color-gold);
  text-decoration: none;
  font-weight: 600;
  transition: opacity var(--transition);
}

.page-news__more-link:hover,
.page-news__more-link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
}

/* ===== 响应式 ===== */

/* 平板及以上 (≥600px) */
@media screen and (min-width: 600px) {
  .page-news {
    padding: 0 0 80px;
  }

  .page-news .breadcrumb {
    font-size: 0.9rem;
    padding-top: 28px;
  }

  .page-news__filters {
    gap: 12px;
    margin: 28px 0 48px;
  }

  .page-news__filters label {
    padding: 10px 26px;
    font-size: 1rem;
  }

  .page-news__timeline::before {
    left: 28px;
  }

  .page-news__chapter {
    padding-left: 64px;
    margin-bottom: 64px;
  }

  .page-news__chapter-dot {
    left: -64px;
    width: 30px;
    height: 30px;
    border-width: 4px;
    box-shadow: 0 0 0 2.5px var(--color-gold);
  }

  .page-news__chapter-title {
    font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  }

  .page-news__chapter-visual {
    margin-bottom: 24px;
    border-radius: 8px;
  }

  .page-news__cards {
    gap: 24px;
  }

  .page-news__card {
    padding-left: 44px;
  }

  .page-news__card-dot {
    left: -36px;
    top: 24px;
    width: 16px;
    height: 16px;
  }

  .page-news__card-inner {
    padding: 22px 24px 20px;
  }

  .page-news__card-title {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
  }

  .page-news__card-summary {
    font-size: 1rem;
  }

  .page-news__details summary {
    font-size: 0.85rem;
  }

  .page-news__fulltext {
    font-size: 0.95rem;
  }

  .page-news__more {
    margin-top: 64px;
    padding: 32px 20px;
    font-size: 0.95rem;
  }
}

/* 桌面端 (≥960px) */
@media screen and (min-width: 960px) {
  .page-news {
    padding: 0 0 100px;
  }

  .page-news .breadcrumb {
    font-size: 0.95rem;
    padding-top: 32px;
  }

  .page-news__title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    padding-left: 28px;
    border-left-width: 5px;
  }

  .page-news__filters {
    gap: 16px;
    margin: 32px 0 56px;
  }

  .page-news__filters label {
    padding: 12px 32px;
    font-size: 1.05rem;
  }

  .page-news__timeline::before {
    left: 36px;
    width: 3px;
  }

  .page-news__chapter {
    padding-left: 80px;
    margin-bottom: 80px;
  }

  .page-news__chapter-dot {
    left: -80px;
    width: 36px;
    height: 36px;
    border-width: 5px;
    box-shadow: 0 0 0 3px var(--color-gold);
  }

  .page-news__chapter-title {
    font-size: clamp(1.8rem, 3vw, 3.2rem);
    letter-spacing: 3px;
  }

  .page-news__chapter-visual {
    margin-bottom: 28px;
    border-radius: 10px;
  }

  .page-news__chapter-img {
    transition: transform 0.5s ease;
  }

  .page-news__cards {
    gap: 28px;
  }

  .page-news__card {
    padding-left: 52px;
  }

  .page-news__card-dot {
    left: -42px;
    top: 26px;
    width: 18px;
    height: 18px;
    border-width: 3px;
    box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.45);
  }

  .page-news__card-inner {
    padding: 26px 32px 24px;
    border-radius: 8px;
  }

  .page-news__card-meta {
    font-size: 0.8rem;
    letter-spacing: 2px;
  }

  .page-news__card-title {
    font-size: clamp(1.15rem, 1.8vw, 1.6rem);
    margin-bottom: 8px;
  }

  .page-news__card-summary {
    font-size: 1.05rem;
    margin-bottom: 10px;
  }

  .page-news__details summary {
    font-size: 0.9rem;
  }

  .page-news__fulltext {
    font-size: 1rem;
    padding: 16px 0 4px;
  }

  .page-news__more {
    margin-top: 80px;
    padding: 40px 20px;
    font-size: 1rem;
  }
}

/* 确保窄屏不溢出 */
@media screen and (max-width: 380px) {
  .page-news__chapter {
    padding-left: 40px;
  }

  .page-news__chapter-dot {
    left: -40px;
    width: 20px;
    height: 20px;
  }

  .page-news__card {
    padding-left: 28px;
  }

  .page-news__card-dot {
    left: -24px;
    width: 12px;
    height: 12px;
  }

  .page-news__card-inner {
    padding: 14px 14px 12px;
  }

  .page-news__filters label {
    padding: 6px 14px;
    font-size: 0.8rem;
  }
}

/* 辅助：高对比度下的焦点样式 */
@media (prefers-reduced-motion: reduce) {
  .page-news__chapter-img,
  .page-news__card-inner,
  .page-news__chapter-dot,
  .page-news__card-dot,
  .page-news__filters label {
    transition: none;
  }

  .page-news__chapter-img:hover {
    transform: none;
  }
}