/* ============================================================
   Post / Article 样式
   ============================================================ */

/* ── 布局 ─────────────────────────────────────────────────── */
.post-layout {
  padding: 80px 0 60px;
}

.post-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

/* ── 文章头部 ─────────────────────────────────────────────── */
.post-header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--card-border);
}

.post-meta-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.post-category {
  display: inline-block;
  padding: 3px 12px;
  background: rgba(27, 79, 114, 0.08);
  color: var(--brand);
  border: 1px solid rgba(27, 79, 114, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.post-date,
.post-readtime {
  font-size: 0.8rem;
  color: var(--text-light);
}

.post-title {
  font-family: var(--font-zh);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 12px;
}

.post-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.post-author-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.post-author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(27, 79, 114, 0.08);
  border: 1px solid rgba(27, 79, 114, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: var(--brand);
  flex-shrink: 0;
}

.post-author-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
}

.post-author-bio {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ── 文章正文 ─────────────────────────────────────────────── */
.post-body {
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--text);
}

.post-body p {
  margin-bottom: 20px;
  color: #2C3E50;
}

.post-body h2 {
  font-family: var(--font-zh);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 16px;
  padding-top: 20px;
  border-top: 1px solid var(--card-border);
}

.post-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brand);
  margin: 28px 0 12px;
}

.post-body ul,
.post-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.post-body li {
  margin-bottom: 8px;
  color: #2C3E50;
  line-height: 1.7;
}

.post-body strong {
  color: var(--text);
  font-weight: 700;
}

.post-body a {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-color: rgba(27, 79, 114, 0.3);
}

.post-body a:hover {
  color: var(--red);
  text-decoration-color: rgba(217, 59, 59, 0.4);
}

/* ── 表格 ─────────────────────────────────────────────────── */
.post-table {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 24px 0;
  font-size: 0.88rem;
}

.post-table-row {
  display: grid;
  grid-template-columns: 2fr 1.5fr 2.5fr 2fr;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--card-border);
  align-items: center;
}

.post-table-row:last-child {
  border-bottom: none;
}

.post-table-header {
  background: rgba(27, 79, 114, 0.06);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--brand);
}

.post-table-row:not(.post-table-header):hover {
  background: rgba(27, 79, 114, 0.03);
}

/* ── 参数卡 ─────────────────────────────────────────────────── */
.post-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 24px 0;
}

.post-spec-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.post-spec-val {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--brand);
  margin-bottom: 6px;
  font-family: var(--font-en);
}

.post-spec-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── 提示框 ─────────────────────────────────────────────────── */
.post-callout {
  padding: 18px 20px;
  border-radius: var(--radius-md);
  margin: 20px 0;
  border-left: 3px solid;
}

.post-callout-blue {
  background: rgba(27, 79, 114, 0.05);
  border-color: var(--brand);
}

.post-callout-red {
  background: rgba(217, 59, 59, 0.05);
  border-color: var(--red);
}

.post-callout-gold {
  background: rgba(200, 136, 43, 0.07);
  border-color: var(--accent);
}

.post-callout-title {
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 6px;
}

.post-callout p {
  font-size: 0.88rem;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── CTA ─────────────────────────────────────────────────── */
.post-cta {
  background: rgba(27, 79, 114, 0.05);
  border: 1px solid rgba(27, 79, 114, 0.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 36px 0;
  text-align: center;
}

.post-cta-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.post-cta p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* ── 标签 ─────────────────────────────────────────────────── */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.post-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(27, 79, 114, 0.06);
  color: var(--brand);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
}

.post-share {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.post-share-link {
  color: var(--brand);
  font-weight: 600;
  text-decoration: none;
}

.post-share-link:hover {
  color: var(--red);
}

/* ── 文章底部 ─────────────────────────────────────────────── */
.post-footer {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--card-border);
}

/* ── 侧边栏 ─────────────────────────────────────────────────── */
.post-sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.sidebar-card-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--card-border);
}

.sidebar-prod-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-prod-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid rgba(27,79,114,0.06);
  transition: var(--t);
}

.sidebar-prod-item:hover {
  color: var(--red);
  padding-left: 4px;
}

.sidebar-prod-num {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--brand);
  font-family: var(--font-en);
  width: 22px;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav-item {
  display: block;
  padding: 7px 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--t);
  border-left: 2px solid transparent;
}

.sidebar-nav-item:hover {
  background: rgba(27, 79, 114, 0.04);
  color: var(--brand);
  padding-left: 14px;
}

.sidebar-nav-active {
  background: rgba(27, 79, 114, 0.06);
  color: var(--brand);
  font-weight: 600;
  border-left-color: var(--brand);
}

.sidebar-cta {
  background: rgba(27, 79, 114, 0.06);
  border-color: rgba(27, 79, 114, 0.18);
  text-align: center;
}

.sidebar-cta-title {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text);
  margin-bottom: 6px;
}

.sidebar-cta p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* ── 相关文章 ─────────────────────────────────────────────── */
.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
}

.related-card {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: var(--t);
}

.related-card:hover {
  border-color: rgba(27, 79, 114, 0.25);
  box-shadow: var(--card-shadow-h);
  transform: translateY(-2px);
}

.related-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: rgba(27, 79, 114, 0.12);
  font-family: var(--font-en);
  flex-shrink: 0;
  line-height: 1;
}

.related-info {
  flex: 1;
}

.related-cat {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.related-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 6px;
}

.related-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── 响应式 ─────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .post-grid {
    grid-template-columns: 1fr;
  }
  .post-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .post-table-row {
    grid-template-columns: 1fr 1fr;
  }
  .post-spec-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .post-sidebar {
    grid-template-columns: 1fr;
  }
  .post-layout {
    padding: 70px 0 40px;
  }
}