/* ===== page-news 品牌日志页面专属样式 ===== */
.page-news {
  --news-gap: 1.25rem;
  --news-radius: 0.75rem;
  --news-card-bg: rgba(17, 34, 64, 0.85);
  --news-border-glow: 0 0 0 1px rgba(0, 255, 135, 0.15), 0 8px 32px rgba(0, 0, 0, 0.35);
  --news-border-glow-hover: 0 0 0 1px rgba(0, 255, 135, 0.45), 0 12px 48px rgba(0, 255, 135, 0.10);
  --news-transition: 0.30s cubic-bezier(0.22, 1, 0.36, 1);

  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
  color: var(--color-text, #e6f1ff);
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.8rem;
  color: var(--color-text-muted, #8892b0);
  margin-bottom: 1rem;
  padding: 0.5rem 0;
}

.page-news .breadcrumb a {
  color: var(--color-accent-green, #00ff87);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s);
}

.page-news .breadcrumb a:hover {
  opacity: 0.7;
}

.page-news .breadcrumb .sep {
  color: var(--color-border, #1c3a5c);
  user-select: none;
}

/* ---------- Hero 首屏横幅 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  border-radius: var(--news-radius);
  margin-bottom: 2rem;
  background: var(--color-bg-card, #112240);
  box-shadow: var(--news-border-glow);
  min-height: 280px;
  display: flex;
  align-items: center;
}

.page-news .news-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-news .news-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  display: block;
}

.page-news .news-hero-content {
  position: relative;
  z-index: 1;
  padding: 2rem 1.5rem;
  width: 100%;
}

.page-news .news-hero-content h1 {
  font-family: var(--font-heading, 'Familjen Grotesk', 'Arial Black', sans-serif);
  font-weight: 900;
  font-size: 2.8rem;
  line-height: 1.05;
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-accent-green, #00ff87), var(--color-accent-orange, #ff6f00));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-news .hero-sub {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.95rem;
  color: var(--color-accent-green, #00ff87);
  margin: 0 0 0.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.85;
}

.page-news .hero-desc {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.95rem;
  color: var(--color-text-muted, #8892b0);
  margin: 0;
  max-width: 480px;
  line-height: 1.5;
}

/* ---------- 标签筛选器 ---------- */
.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 0.25rem 0;
}

.page-news .filter-label {
  display: inline-block;
  padding: 0.45rem 1.2rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted, #8892b0);
  background: transparent;
  border: 1px solid var(--color-border, #1c3a5c);
  border-radius: 2rem;
  cursor: pointer;
  transition: all var(--transition, 0.25s);
  user-select: none;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-news .filter-label:hover {
  border-color: var(--color-accent-green, #00ff87);
  color: var(--color-accent-green, #00ff87);
}

/* 选中态：通过兄弟选择器实现 */
#filter-all:checked ~ .news-filter label[for="filter-all"],
#filter-dynamic:checked ~ .news-filter label[for="filter-dynamic"],
#filter-observe:checked ~ .news-filter label[for="filter-observe"],
#filter-guide:checked ~ .news-filter label[for="filter-guide"] {
  background: var(--color-accent-green, #00ff87);
  color: #0a192f;
  border-color: var(--color-accent-green, #00ff87);
  box-shadow: 0 0 20px rgba(0, 255, 135, 0.18);
}

/* ---------- 章节容器 ---------- */
.page-news .news-chapters {
  display: flex;
  flex-direction: column;
  gap: 2.8rem;
}

/* ---------- 筛选逻辑：隐藏非选中章节 ---------- */
#filter-dynamic:checked ~ .news-chapters .chapter:not([data-category="dynamic"]),
#filter-observe:checked ~ .news-chapters .chapter:not([data-category="observe"]),
#filter-guide:checked ~ .news-chapters .chapter:not([data-category="guide"]) {
  display: none;
}

/* ---------- 单章节 ---------- */
.page-news .chapter {
  animation: newsFadeIn 0.45s ease-out;
}

@keyframes newsFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-news .chapter-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border, #1c3a5c);
  padding-bottom: 0.75rem;
}

.page-news .chapter-header .section-counter {
  font-family: var(--font-heading, 'Familjen Grotesk', 'Arial Black', sans-serif);
  font-weight: 900;
  font-size: 3rem;
  line-height: 1;
  color: var(--color-accent-green, #00ff87);
  opacity: 0.3;
  flex-shrink: 0;
}

.page-news .chapter-header h2 {
  font-family: var(--font-heading, 'Familjen Grotesk', 'Arial Black', sans-serif);
  font-weight: 700;
  font-size: 1.6rem;
  margin: 0;
  color: var(--color-text, #e6f1ff);
  letter-spacing: -0.01em;
}

/* ---------- 卡片网格 ---------- */
.page-news .chapter-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

/* ---------- 单张卡片 ---------- */
.page-news .news-card {
  background: var(--news-card-bg);
  border-radius: var(--news-radius);
  box-shadow: var(--news-border-glow);
  overflow: hidden;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.page-news .news-card:hover {
  transform: scale(1.02);
  box-shadow: var(--news-border-glow-hover);
  z-index: 2;
}

.page-news .card-image-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg, #0a192f);
  flex-shrink: 0;
}

.page-news .card-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--news-transition);
}

.page-news .news-card:hover .card-image-wrap img {
  transform: scale(1.04);
}

.page-news .card-body {
  padding: 1.2rem 1.25rem 1.4rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-news .card-tag {
  display: inline-block;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent-orange, #ff6f00);
  background: rgba(255, 111, 0, 0.10);
  padding: 0.2rem 0.7rem;
  border-radius: 1rem;
  margin-bottom: 0.5rem;
  align-self: flex-start;
  border: 1px solid rgba(255, 111, 0, 0.20);
}

.page-news .card-title {
  font-family: var(--font-heading, 'Familjen Grotesk', 'Arial Black', sans-serif);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
  color: var(--color-text, #e6f1ff);
  line-height: 1.2;
}

.page-news .card-details {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.88rem;
  color: var(--color-text-muted, #8892b0);
  line-height: 1.55;
  margin-top: auto;
}

.page-news .card-details summary {
  cursor: pointer;
  color: var(--color-accent-green, #00ff87);
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.2rem 0;
  transition: opacity var(--transition, 0.25s);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.page-news .card-details summary::before {
  content: "▶";
  font-size: 0.7rem;
  color: var(--color-accent-green, #00ff87);
  transition: transform var(--transition, 0.25s);
}

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

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

.page-news .card-details summary:hover {
  opacity: 0.75;
}

.page-news .card-details p {
  margin: 0.6rem 0 0;
  padding: 0.5rem 0.75rem;
  background: rgba(0, 0, 0, 0.18);
  border-radius: 0.4rem;
  border-left: 2px solid var(--color-accent-green, #00ff87);
}

.page-news .card-details a {
  color: var(--color-accent-orange, #ff6f00);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition, 0.25s);
}

.page-news .card-details a:hover {
  opacity: 0.7;
}

/* ---------- 信任声明 ---------- */
.page-news .news-trust {
  margin-top: 3rem;
  padding: 1.2rem 1.5rem;
  background: rgba(17, 34, 64, 0.5);
  border-radius: var(--news-radius);
  border: 1px solid var(--color-border, #1c3a5c);
  text-align: center;
}

.page-news .news-trust p {
  font-family: var(--font-body, Inter, sans-serif);
  font-size: 0.82rem;
  color: var(--color-text-muted, #8892b0);
  margin: 0;
  line-height: 1.5;
}

.page-news .news-trust a {
  color: var(--color-accent-green, #00ff87);
  text-decoration: none;
}

.page-news .news-trust a:hover {
  text-decoration: underline;
}

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-news {
    padding: 1.5rem 2rem 4rem;
  }

  .page-news .breadcrumb {
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
  }

  .page-news .news-hero {
    min-height: 360px;
    border-radius: var(--radius-lg, 1rem);
    margin-bottom: 2.5rem;
  }

  .page-news .news-hero-content {
    padding: 3rem 3rem;
  }

  .page-news .news-hero-content h1 {
    font-size: 4rem;
  }

  .page-news .hero-sub {
    font-size: 1.05rem;
  }

  .page-news .hero-desc {
    font-size: 1rem;
  }

  .page-news .news-filter {
    gap: 0.75rem;
    margin-bottom: 2.5rem;
  }

  .page-news .filter-label {
    font-size: 0.82rem;
    padding: 0.5rem 1.5rem;
  }

  .page-news .chapter-header {
    margin-bottom: 2rem;
  }

  .page-news .chapter-header .section-counter {
    font-size: 4.2rem;
  }

  .page-news .chapter-header h2 {
    font-size: 2rem;
  }

  .page-news .chapter-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .page-news .chapter[data-category="dynamic"] .chapter-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news .card-body {
    padding: 1.4rem 1.5rem 1.6rem;
  }

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

  .page-news .card-tag {
    font-size: 0.72rem;
  }

  .page-news .card-details {
    font-size: 0.9rem;
  }

  .page-news .news-trust {
    padding: 1.5rem 2rem;
    font-size: 0.85rem;
  }
}

/* ===== 桌面端 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-news {
    padding: 2rem 2.5rem 5rem;
  }

  .page-news .news-hero {
    min-height: 400px;
  }

  .page-news .news-hero-content h1 {
    font-size: 5rem;
  }

  .page-news .hero-sub {
    font-size: 1.1rem;
  }

  .page-news .hero-desc {
    font-size: 1.05rem;
    max-width: 580px;
  }

  .page-news .chapter-header .section-counter {
    font-size: 5rem;
  }

  .page-news .chapter-header h2 {
    font-size: 2.2rem;
  }

  .page-news .chapter[data-category="dynamic"] .chapter-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news .chapter[data-category="observe"] .chapter-cards,
  .page-news .chapter[data-category="guide"] .chapter-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news .news-card:hover {
    transform: scale(1.03);
  }
}