:root {
  --page-bg: #fcfcfc;
  --card-bg: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #333333;
  --muted: #888888;
  --muted-light: #bbbbbb;
  --border: #eeeeee;
  --accent: #b44432;
  --max-width: 960px;
  --content-padding: 48px;
  --section-spacing: 80px; /* 垂直节奏变量 */
  
  --font-serif: "Noto Serif SC", "STKaiti", "Kaiti SC", "KaiTi", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background-color: var(--page-bg);
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header & Banner Area - 极宽自适应 */
.editorial-header {
  background: #ffffff;
}

.banner-area {
  width: 100%;
  height: auto; /* 从 380px 改为自适应 */
  overflow: hidden;
  background: #000;
  line-height: 0; /* 消除图片下方的间隙 */
  position: relative;
}

.banner-img {
  width: 100%;
  height: auto; /* 确保 1600x235 的比例完整呈现 */
  display: block;
  opacity: 0.9;
  filter: grayscale(0.1) brightness(0.9);
  transition: opacity 0.5s ease;
}

.editorial-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px var(--content-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.nav-brand a {
  text-decoration: none;
  color: var(--ink);
}

.nav-links {
  display: flex;
  gap: 48px;
  font-size: 15px;
  font-family: var(--font-serif);
}

.nav-item a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  transition: color 0.3s;
}

.nav-item a:hover {
  color: var(--accent);
}

.arrow {
  font-size: 10px;
  margin-left: 4px;
  color: var(--muted-light);
}

.nav-search {
  position: absolute;
  right: var(--content-padding);
}

.search-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink);
  padding: 8px;
  transition: transform 0.2s ease; /* 搜索按钮缩放微动效 */
}

.search-btn:hover {
  transform: scale(1.1);
}

.search-btn svg {
  width: 20px;
  height: 20px;
}

/* Main Content Area */
.editorial-main {
  max-width: var(--max-width);
  margin: var(--section-spacing) auto; /* 使用变量控制垂直节奏 */
  padding: 0 var(--content-padding);
}

.zen-article {
  max-width: 800px;
  margin: 0 auto;
}

/* 让 content 中的 h1 成为大标题 */
.article-content h1 {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 600;
  margin: 0 0 24px;
  color: var(--ink);
  letter-spacing: 0.05em;
  text-align: left;
}

/* 文章元信息样式 */
.article-content p:has(strong) {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--muted);
  font-family: var(--font-sans);
  margin-bottom: 56px;
}

/* Article Body Typography */
.article-content {
  font-size: 17px;
  color: var(--ink-soft);
  text-align: justify;
}

/* Drop Cap Effect - 缩小 30%，且只在文章页生效 (排除首页) */
body:not(.home) .article-content p:not(:has(strong)):first-of-type::first-letter {
  float: left;
  font-family: var(--font-serif);
  font-size: 68px;
  line-height: 0.85;
  margin: 6px 12px 2px 0;
  color: var(--ink);
  font-weight: 600;
}

/* Side border for intro block */
.article-content blockquote {
  border-left: 2px solid var(--ink);
  padding-left: 24px;
  margin: 32px 0;
  color: var(--ink-soft);
  font-style: normal;
}

p { margin-bottom: 24px; }

/* Footer */
.editorial-footer {
  margin-top: auto;
  padding: 64px 0;
  border-top: 1px solid var(--border);
  background: #ffffff;
  text-align: center;
}

.footer-inner {
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

@media (max-width: 768px) {
  :root {
    --section-spacing: 40px; /* 移动端减小间距 */
  }
  .article-content h1 { font-size: 32px; }
  .nav-links { gap: 24px; }
  .nav-search { position: static; margin-top: 16px; }
  .editorial-nav { flex-direction: column; padding: 24px; }
  body:not(.home) .article-content p:not(:has(strong)):first-of-type::first-letter {
    font-size: 48px; /* 移动端减小首字下沉大小 */
  }
}