/* ═══════════════════════════════════════════════════════════════
   Editorial Design System — 杂志风格设计系统
   核心原则：内容为王、大量留白、字体层次分明
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* 主色调 - Editorial 黑白配色 */
  --bg: #fafafa;
  --bg-accent: #f5f5f5;
  --bg-input: #ffffff;
  --ink: #0a0a0a;
  --muted: #6b7280;
  
  /* 强调色 - 仅用于点睛 */
  --accent: #e63946;
  --accent-deep: #c1121f;
  
  /* 卡片与边框 - 简洁细边框 */
  --card: #ffffff;
  --stroke: #e5e5e5;
  --stroke-hover: #0a0a0a;
  
  /* 移除阴影，Editorial风格不使用 */
  --header-bg: rgba(250, 250, 250, 0.85);
  
  /* 标签 - 简洁风格 */
  --tag-bg: #f5f5f5;
  --tag-text: #6b7280;
  
  /* 字体系统 */
  --font-serif: "Literata", Georgia, "Noto Serif SC", serif;
  --font-sans: "Space Grotesk", -apple-system, "PingFang SC", sans-serif;
  
  /* 间距系统 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-accent: #141414;
  --bg-input: #1a1a1a;
  --ink: #fafafa;
  --muted: #9ca3af;
  --accent: #f87171;
  --accent-deep: #ef4444;
  --card: #141414;
  --stroke: #262626;
  --stroke-hover: #fafafa;
  --header-bg: rgba(10, 10, 10, 0.85);
  --tag-bg: #1f1f1f;
  --tag-text: #9ca3af;
}

/* 深色模式下的精选卡片 */
[data-theme="dark"] .hero-card {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--stroke);
}

[data-theme="dark"] .hero-card .featured-body p {
  color: var(--muted);
}

[data-theme="dark"] .hero-card .badge {
  background: var(--accent);
  color: #fff;
}

[data-theme="dark"] .hero-card .tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--stroke);
}

[data-theme="dark"] .hero-card .text-link {
  color: var(--accent);
}

[data-theme="dark"] .hero-card .text-link:hover {
  color: var(--accent-deep);
}

/* ═══════════════════════════════════════════════════════════════
   基础重置与排版
   ═══════════════════════════════════════════════════════════════ */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  background: var(--bg);
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 所有标题使用衬线字体 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ═══════════════════════════════════════════════════════════════
   布局容器
   ═══════════════════════════════════════════════════════════════ */

.page-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg) var(--space-2xl);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--stroke);
  background: transparent;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.brand-link:hover .brand-title {
  color: var(--accent);
}

.brand-mark {
  font-size: 20px;
  background: var(--ink);
  color: var(--bg);
  border-radius: 6px;
  padding: 6px 10px;
}

.brand-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.brand-sub {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.site-nav {
  display: flex;
  gap: var(--space-lg);
  font-family: var(--font-sans);
  font-size: 14px;
  align-items: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.site-nav a {
  position: relative;
  padding: 4px 0;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--ink);
  transition: width 0.3s ease;
}

.site-nav a:hover::after {
  width: 100%;
}

.site-nav a:hover {
  color: var(--ink);
}

/* ═══════════════════════════════════════════════════════════════
   主内容区
   ═══════════════════════════════════════════════════════════════ */

.main-content {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
}

/* ═══════════════════════════════════════════════════════════════
   精选文章 - 顶部大图布局
   ═══════════════════════════════════════════════════════════════ */

.featured-hero {
  position: relative;
  margin-bottom: var(--space-xl);
  animation: rise 0.6s ease both;
}

.featured-hero .featured-carousel {
  position: relative;
}

.featured-item {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: stretch;
  min-height: 400px;
}

.featured-item.is-active {
  display: grid;
  animation: fadeIn 0.5s ease both;
}

.featured-image {
  position: relative;
  overflow: hidden;
  background: var(--bg-accent);
  display: block;
}

.featured-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--stroke);
  pointer-events: none;
  transition: border-color 0.3s ease;
}

.featured-image:hover::after {
  border-color: var(--stroke-hover);
}

.featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.featured-image:hover img {
  transform: scale(1.02);
}

.featured-placeholder {
  width: 100%;
  height: 100%;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--muted);
  border: 1px solid var(--stroke);
}

.featured-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-lg) 0;
}

.featured-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.featured-label .label-text {
  font-family: var(--font-sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 500;
}

.featured-label .label-count {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.featured-title {
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
}

.featured-title a {
  transition: color 0.2s ease;
}

.featured-title a:hover {
  color: var(--accent);
}

.featured-summary {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0 0 var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-family: var(--font-sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.featured-meta .meta-date {
  color: var(--muted);
}

.featured-meta .meta-category {
  color: var(--ink);
  padding: 4px 10px;
  background: var(--bg-accent);
  border: 1px solid var(--stroke);
}

.featured-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.featured-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink);
  padding: 12px 0;
  border-bottom: 1px solid var(--stroke);
  transition: border-color 0.2s ease;
  width: fit-content;
}

.featured-link:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.featured-link svg {
  transition: transform 0.2s ease;
}

.featured-link:hover svg {
  transform: translateX(4px);
}

/* 精选导航按钮 */
.featured-nav {
  position: absolute;
  bottom: var(--space-lg);
  right: 0;
  display: flex;
  gap: var(--space-sm);
}

.featured-nav-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--stroke);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--ink);
}

.featured-nav-btn:hover {
  border-color: var(--stroke-hover);
  background: var(--bg-accent);
}

/* ═══════════════════════════════════════════════════════════════
   Hero 区域 (保留兼容)
   ═══════════════════════════════════════════════════════════════ */

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-xl);
  align-items: start;
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--stroke);
}

.hero-copy {
  padding: var(--space-lg) 0;
  display: flex;
  flex-direction: column;
  animation: rise 0.6s ease both;
}

.eyebrow {
  font-family: var(--font-sans);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin: 0 0 var(--space-md);
  font-weight: 500;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.1;
  margin: 0 0 var(--space-lg);
  letter-spacing: -0.03em;
}

.lead {
  font-size: 17px;
  color: var(--muted);
  margin: 0 0 var(--space-lg);
  line-height: 1.7;
}

/* Hero Bio - Markdown 渲染区域 */
.hero-bio {
  margin: 0 0 var(--space-lg);
  line-height: 1.7;
  position: relative;
}

/* 默认限制高度，超出部分淡出 */
.hero-bio.is-collapsed {
  max-height: 280px;
  overflow: hidden;
}

.hero-bio.is-collapsed::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
}

/* 展开/收起按钮 */
.hero-bio-toggle {
  display: none;
  margin-top: var(--space-sm);
  padding: 8px 16px;
  font-family: var(--font-sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--stroke);
  cursor: pointer;
  transition: all 0.2s ease;
}

.hero-bio-toggle:hover {
  border-color: var(--stroke-hover);
  color: var(--ink);
}

.hero-bio-toggle.is-visible {
  display: inline-block;
}

.hero-bio h1,
.hero-bio h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 var(--space-md);
  line-height: 1.2;
}

.hero-bio h3 {
  font-size: 20px;
  margin: var(--space-lg) 0 var(--space-sm);
}

.hero-bio p {
  font-size: 16px;
  color: var(--muted);
  margin: 0 0 var(--space-md);
}

.hero-bio ul,
.hero-bio ol {
  margin: var(--space-md) 0;
  padding-left: var(--space-lg);
  color: var(--muted);
}

.hero-bio li {
  margin-bottom: var(--space-xs);
  font-size: 15px;
}

.hero-bio strong {
  color: var(--ink);
  font-weight: 600;
}

.hero-bio em {
  font-style: italic;
}

.hero-bio a {
  color: var(--ink);
  border-bottom: 1px solid var(--stroke);
  transition: border-color 0.2s ease;
}

.hero-bio a:hover {
  border-color: var(--ink);
}

.hero-bio blockquote {
  margin: var(--space-md) 0;
  padding: var(--space-sm) var(--space-md);
  border-left: 2px solid var(--ink);
  font-style: italic;
  color: var(--muted);
}

.hero-bio blockquote p {
  margin: 0;
}

.hero-bio code {
  font-family: 'SF Mono', Consolas, monospace;
  font-size: 0.9em;
  background: var(--bg-accent);
  padding: 2px 6px;
  border: 1px solid var(--stroke);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  margin-bottom: var(--space-lg);
}

.meta-pill {
  border: 1px solid var(--stroke);
  padding: 6px 14px;
  font-size: 12px;
  background: transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: border-color 0.2s ease;
}

.meta-pill:hover {
  border-color: var(--stroke-hover);
}

.meta-link {
  font-size: 13px;
  font-family: var(--font-sans);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 13px;
  cursor: pointer;
  border: 1px solid var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all 0.2s ease;
}

.primary-btn {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.primary-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.secondary-btn {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
}

.secondary-btn:hover {
  background: var(--ink);
  color: var(--bg);
}

.ghost-btn {
  background: transparent;
  border: 1px solid var(--stroke);
  color: var(--ink);
}

.ghost-btn:hover {
  border-color: var(--stroke-hover);
}

/* Hero Card - 精选卡片 */
.hero-card {
  padding: var(--space-lg);
  background: var(--card);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  border: 1px solid var(--stroke);
  animation: rise 0.7s ease 0.1s both;
  transition: border-color 0.2s ease;
}

.hero-card:hover {
  border-color: var(--stroke-hover);
}

.featured-carousel {
  position: relative;
  min-height: 240px;
}

.featured-slide {
  display: none;
  grid-template-columns: 120px 1fr;
  gap: var(--space-lg);
  align-items: start;
  animation: fadeIn 0.4s ease both;
}

.featured-slide.is-active {
  display: grid;
}

.featured-thumb {
  width: 120px;
  height: 120px;
  overflow: hidden;
  background: var(--bg-accent);
}

.featured-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.hero-card:hover .featured-thumb img {
  transform: scale(1.02);
}

.featured-body h3 {
  margin: 0 0 var(--space-sm);
  font-size: 20px;
}

.featured-body p {
  margin: 0 0 var(--space-md);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.card-label {
  font-family: var(--font-sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 500;
}

.card-meta {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  font-size: 12px;
  color: var(--muted);
  flex-wrap: wrap;
}

.hero-card .badge {
  background: var(--ink);
  color: var(--bg);
}

.hero-card .tag-row {
  gap: var(--space-xs);
  margin-top: var(--space-xs);
}

.hero-card .tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--stroke);
}

.hero-card .text-link {
  color: var(--ink);
  font-weight: 500;
  border-bottom: 1px solid var(--stroke);
  padding-bottom: 2px;
  transition: border-color 0.2s ease;
}

.hero-card .text-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ═══════════════════════════════════════════════════════════════
   Section 与文章网格
   ═══════════════════════════════════════════════════════════════ */

.section {
  display: grid;
  gap: var(--space-lg);
}

.section-head {
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--stroke);
  margin-bottom: var(--space-md);
}

.section-head h2,
.section h2 {
  margin: 0 0 var(--space-sm);
  font-size: clamp(28px, 4vw, 36px);
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* 杂志式文章网格 */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.post-grid.fixed-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* 杂志式不对称网格 - 用于首页精选布局 */
.post-grid.magazine-grid {
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: minmax(180px, auto);
}

.post-grid.magazine-grid .post-card:first-child {
  grid-column: span 4;
  grid-row: span 2;
}

.post-grid.magazine-grid .post-card:first-child .post-thumb {
  height: 320px;
}

.post-grid.magazine-grid .post-card:first-child h3 {
  font-size: 28px;
}

.post-grid.magazine-grid .post-card:nth-child(2),
.post-grid.magazine-grid .post-card:nth-child(3) {
  grid-column: span 2;
}

.post-grid.magazine-grid .post-card:nth-child(n+4) {
  grid-column: span 2;
}

/* 文章卡片 - Editorial 风格 */
.post-card {
  padding: 0;
  background: transparent;
  border: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transition: transform 0.3s ease;
  animation: rise 0.5s ease both;
  position: relative;
}

.post-card:hover {
  transform: translateY(-2px);
}

.post-card:hover h3 {
  color: var(--accent);
}

.post-card h3 {
  font-size: 18px;
  margin: 0;
  line-height: 1.35;
  transition: color 0.2s ease;
}

.post-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}
.stretched-link::after {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1;
  content: "";
}

/* 文章缩略图 */
.post-thumb {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--bg-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 12px;
  margin-bottom: var(--space-xs);
  position: relative;
}

.post-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--stroke);
  transition: border-color 0.2s ease;
  pointer-events: none;
}

.post-card:hover .post-thumb::after {
  border-color: var(--stroke-hover);
}

.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.post-card:hover .post-thumb img {
  transform: scale(1.03);
}

/* 文章元信息 */
.post-meta {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  font-size: 12px;
  color: var(--muted);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 标签 - Editorial 风格：大写 + 字间距 */
.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: auto;
  padding: 4px 0;
  background: transparent;
  color: var(--muted);
  font-size: 10px;
  font-family: var(--font-sans);
  position: relative;
  z-index: 2;
  transition: color 0.2s ease;
  line-height: 1;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid transparent;
}

.tag:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* 徽章/分类 */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: auto;
  padding: 4px 10px;
  background: var(--ink);
  color: var(--bg);
  font-size: 10px;
  font-family: var(--font-sans);
  position: relative;
  z-index: 2;
  line-height: 1;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* 分类微差异 - Editorial 风格保持简洁 */
.badge[data-category="技术"],
.badge.cat-tech {
  background: var(--ink);
}

.badge[data-category="产品"],
.badge.cat-product {
  background: var(--ink);
}

.badge[data-category="写作"],
.badge.cat-writing {
  background: var(--ink);
}

.badge[data-category="生活"],
.badge.cat-life {
  background: var(--muted);
}

.badge[data-category="思考"],
.badge.cat-thinking {
  background: var(--muted);
}

.badge[data-category="工程"],
.badge.cat-engineering {
  background: var(--ink);
}

.badge[data-category="设计"],
.badge.cat-design {
  background: var(--ink);
}

.badge.cat-featured {
  background: var(--accent);
  color: #fff;
}

/* 筛选栏 - 简洁风格 */
.filter-bar {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
  background: transparent;
  border-top: 1px solid var(--stroke);
  border-bottom: 1px solid var(--stroke);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-size: 13px;
}

.filter-group label {
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
}

.filter-group select {
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--stroke);
  background: var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 10px center;
  appearance: none;
  -webkit-appearance: none;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.2s ease;
  min-width: 120px;
}

.filter-group select:hover {
  border-color: var(--stroke-hover);
}

.filter-group select:focus {
  outline: none;
  border-color: var(--ink);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: 0;
}

/* 搜索表单 */
.search-form {
  display: flex;
  gap: var(--space-md);
  max-width: 640px;
}

.search-form input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--stroke);
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  transition: border-color 0.2s ease;
}

.search-form input:focus {
  outline: none;
  border-color: var(--stroke-hover);
}

.hero-search {
  background: var(--bg);
  border: 1px solid var(--stroke);
  padding: 8px;
  align-items: center;
  transition: border-color 0.2s ease;
}

.hero-search:focus-within {
  border-color: var(--stroke-hover);
}

.hero-search input {
  border: none;
  background: transparent;
  padding: 8px 12px;
  color: var(--ink);
  font-family: var(--font-sans);
}

.hero-search input:focus {
  outline: none;
}

/* 文本链接 - Editorial 风格下划线 */
.text-link {
  font-family: var(--font-sans);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--stroke);
  padding-bottom: 2px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.text-link:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.muted {
  color: var(--muted);
}

/* ═══════════════════════════════════════════════════════════════
   文章详情页
   ═══════════════════════════════════════════════════════════════ */

.post-detail {
  max-width: 720px;
  margin: 0 auto;
}

.post-header {
  margin-bottom: var(--space-xl);
}

.post-header h1 {
  font-size: clamp(32px, 5vw, 48px);
  margin: var(--space-md) 0;
  line-height: 1.15;
}

/* 文章内容 - Editorial 排版 */
.post-content {
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
  padding: var(--space-lg) 0;
}

/* 首字下沉 */
.post-content > p:first-of-type::first-letter {
  float: left;
  font-family: var(--font-serif);
  font-size: 64px;
  line-height: 1;
  font-weight: 600;
  margin: 0 12px 0 0;
  color: var(--ink);
}

.post-content p {
  margin: 0 0 var(--space-lg);
}

.post-content h2 {
  font-size: 28px;
  margin: var(--space-2xl) 0 var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--stroke);
}

.post-content h3 {
  font-size: 22px;
  margin: var(--space-xl) 0 var(--space-md);
}

.post-content h2,
.post-content h3 {
  color: var(--ink);
}

/* 引用块 - Editorial 风格 */
.post-content blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-lg) var(--space-xl);
  border-left: 2px solid var(--ink);
  background: transparent;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 18px;
  line-height: 1.7;
  color: var(--muted);
}

.post-content blockquote p {
  margin: 0;
}

/* 图片 */
.post-content img {
  max-width: 100%;
  display: block;
  margin: var(--space-xl) 0;
}

/* 代码块 */
.post-content pre {
  background: var(--bg-accent);
  border: 1px solid var(--stroke);
  padding: var(--space-lg);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin: var(--space-lg) 0;
}

.post-content code {
  font-family: 'SF Mono', Consolas, monospace;
  font-size: 0.9em;
}

.post-content p code,
.post-content li code {
  background: var(--bg-accent);
  padding: 2px 6px;
  border: 1px solid var(--stroke);
}

/* 列表 */
.post-content ul,
.post-content ol {
  margin: var(--space-lg) 0;
  padding-left: var(--space-lg);
}

.post-content li {
  margin-bottom: var(--space-sm);
}

/* 分割线 */
.post-content hr {
  border: none;
  border-top: 1px solid var(--stroke);
  margin: var(--space-2xl) 0;
}

/* 文章封面 */
.post-cover {
  margin: var(--space-lg) 0;
  overflow: hidden;
  border: 1px solid var(--stroke);
}

.post-cover img {
  width: 100%;
  display: block;
}

/* ═══════════════════════════════════════════════════════════════
   关于区块
   ═══════════════════════════════════════════════════════════════ */

.about {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: start;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--stroke);
}

/* 垂直布局模式 */
.about.about-vertical {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.about-header {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.about-info h2 {
  margin: 0 0 var(--space-sm);
  font-size: 24px;
}

.about-body {
  width: 100%;
}

.about-body .about-bio {
  padding: var(--space-lg);
  background: transparent;
  border: 1px solid var(--stroke);
  animation: rise 0.6s ease both;
}

.about-left {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: start;
}

.about-avatar {
  width: 100px;
  height: 100px;
  border: 1px solid var(--stroke);
  background: var(--bg-accent);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.avatar-placeholder {
  font-size: 11px;
  color: var(--muted);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.about-copy h2 {
  margin: 0 0 var(--space-sm);
  font-size: 24px;
}

.about-position {
  margin: 0 0 var(--space-md);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
}

.about-tags span {
  display: inline-flex;
  align-items: center;
  padding: 4px 0;
  font-size: 11px;
  font-family: var(--font-sans);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--stroke);
}

.about-card {
  padding: var(--space-lg);
  background: transparent;
  border: 1px solid var(--stroke);
  animation: rise 0.6s ease both;
}

.about-card h3 {
  margin: 0 0 var(--space-md);
  font-size: 18px;
}

.about-card ul {
  color: var(--muted);
  margin: 0;
  padding-left: var(--space-lg);
  font-size: 14px;
  line-height: 1.8;
}

.about-right {
  display: grid;
  gap: var(--space-md);
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.social-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border: 1px solid var(--stroke);
  background: transparent;
  font-size: 12px;
  font-family: var(--font-sans);
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease;
  gap: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.social-pill:hover {
  color: var(--ink);
  border-color: var(--stroke-hover);
}

.social-icon {
  width: 14px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.social-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.subscribe {
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  align-items: center;
  padding: var(--space-xl);
  background: var(--ink);
  color: var(--bg);
  animation: rise 0.6s ease both;
}

.subscribe-form {
  display: flex;
  gap: var(--space-md);
}

.subscribe-form input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-family: var(--font-sans);
  background: transparent;
  color: var(--bg);
}

.subscribe-form input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

/* ═══════════════════════════════════════════════════════════════
   页脚
   ═══════════════════════════════════════════════════════════════ */

.site-footer {
  margin-top: var(--space-3xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--stroke);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: var(--space-md);
}

.footer-links a {
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.2s ease;
}

.footer-links a:hover {
  border-bottom-color: var(--ink);
  color: var(--ink);
}

/* ═══════════════════════════════════════════════════════════════
   管理后台
   ═══════════════════════════════════════════════════════════════ */

.admin-table {
  display: grid;
  gap: 0;
  border: 1px solid var(--stroke);
  background: var(--bg);
  padding: 0;
}

.admin-row {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1fr 1fr;
  gap: var(--space-md);
  align-items: center;
  padding: var(--space-md);
  border-bottom: 1px solid var(--stroke);
}

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

.admin-row:nth-child(even) {
  background: var(--bg-accent);
}

.admin-head {
  font-weight: 600;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--font-sans);
}

.admin-form {
  display: grid;
  gap: var(--space-lg);
  max-width: 680px;
}

.admin-form label {
  display: grid;
  gap: var(--space-xs);
  font-family: var(--font-sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.admin-form input,
.admin-form textarea {
  padding: 12px 14px;
  border: 1px solid var(--stroke);
  font-family: var(--font-serif);
  font-size: 15px;
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.2s ease;
}

.admin-form input:focus,
.admin-form textarea:focus {
  outline: none;
  border-color: var(--stroke-hover);
}

.admin-form textarea {
  resize: vertical;
  min-height: 120px;
}

.checkbox-field {
  display: flex !important;
  flex-direction: row;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  transition: color 0.2s ease;
}

.checkbox-field:hover {
  color: var(--ink);
}

.checkbox-field input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin: 0;
  border: 1px solid var(--stroke);
  background: var(--bg);
  display: grid;
  place-content: center;
  transition: all 0.2s ease;
  cursor: pointer;
}

.checkbox-field input[type="checkbox"]::before {
  content: "";
  width: 10px;
  height: 10px;
  transform: scale(0);
  background-color: var(--ink);
  transition: transform 0.2s ease;
}

.checkbox-field input[type="checkbox"]:checked {
  border-color: var(--ink);
}

.checkbox-field input[type="checkbox"]:checked::before {
  transform: scale(1);
}

.admin-actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  margin-top: var(--space-md);
}

.inline-form {
  display: inline-block;
  margin: 0;
}

/* 主题切换 */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--stroke);
  cursor: pointer;
  color: var(--ink);
  font-size: 16px;
  padding: 6px 10px;
  display: flex;
  align-items: center;
  transition: border-color 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--stroke-hover);
}

/* ═══════════════════════════════════════════════════════════════
   分页
   ═══════════════════════════════════════════════════════════════ */

.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  align-items: center;
  font-family: var(--font-sans);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--stroke);
}

.pagination-link {
  color: var(--ink);
  font-weight: 500;
  border-bottom: 1px solid var(--stroke);
  padding-bottom: 2px;
  transition: border-color 0.2s ease;
}

.pagination-link:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.pagination-disabled {
  color: var(--muted);
  opacity: 0.5;
}

.pagination-info {
  color: var(--muted);
}

/* ═══════════════════════════════════════════════════════════════
   相关文章
   ═══════════════════════════════════════════════════════════════ */

.related-section {
  margin-top: var(--space-2xl);
  border-top: 1px solid var(--stroke);
  padding-top: var(--space-xl);
}

.related-title {
  margin-bottom: var(--space-lg);
  font-size: 20px;
}

.related-card {
  padding: 0;
  gap: var(--space-sm);
}

.related-card .post-thumb {
  height: 100px;
}

.related-card h4 {
  margin: 0;
  font-size: 15px;
}

.related-card h4 a {
  text-decoration: none;
  color: var(--ink);
  transition: color 0.2s ease;
}

.related-card h4 a:hover {
  color: var(--accent);
}

.related-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

/* ═══════════════════════════════════════════════════════════════
   响应式布局
   ═══════════════════════════════════════════════════════════════ */

@media (max-width: 900px) {
  .page-shell {
    padding: var(--space-lg) var(--space-md) var(--space-xl);
  }

  /* 精选区域响应式 */
  .featured-item {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .featured-image {
    aspect-ratio: 16 / 9;
  }

  .featured-placeholder {
    min-height: 200px;
  }

  .featured-title {
    font-size: 24px;
  }

  .featured-summary {
    -webkit-line-clamp: 2;
    line-clamp: 2;
  }

  .featured-nav {
    position: static;
    justify-content: center;
    margin-top: var(--space-md);
  }

  .hero,
  .about,
  .subscribe {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: var(--space-lg);
    border-bottom: none;
    padding-bottom: 0;
  }

  /* 移动端 Hero Bio 不限制高度，完整显示 */
  .hero-bio.is-collapsed {
    max-height: none;
    overflow: visible;
  }

  .hero-bio.is-collapsed::after {
    display: none;
  }

  .hero-bio-toggle {
    display: none !important;
  }

  /* 垂直布局在移动端保持垂直 */
  .about.about-vertical {
    gap: var(--space-lg);
  }

  .about-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .about-info {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .about-tags {
    justify-content: center;
  }

  .about-links {
    justify-content: center;
  }

  .about-left {
    grid-template-columns: 80px minmax(0, 1fr);
  }

  .about-avatar {
    width: 80px;
    height: 80px;
  }

  .site-header {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-md) 0;
  }

  .site-nav {
    gap: var(--space-md);
  }

  .subscribe-form {
    flex-direction: column;
  }

  .admin-row {
    grid-template-columns: 1fr;
  }

  .post-grid.fixed-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-lg);
  }

  .post-grid.magazine-grid {
    grid-template-columns: 1fr;
  }

  .post-grid.magazine-grid .post-card:first-child,
  .post-grid.magazine-grid .post-card:nth-child(2),
  .post-grid.magazine-grid .post-card:nth-child(3),
  .post-grid.magazine-grid .post-card:nth-child(n+4) {
    grid-column: span 1;
    grid-row: span 1;
  }

  .post-grid.magazine-grid .post-card:first-child .post-thumb {
    height: 200px;
  }

  .post-grid.magazine-grid .post-card:first-child h3 {
    font-size: 20px;
  }

  .main-content {
    gap: var(--space-2xl);
  }

  .featured-slide {
    grid-template-columns: 1fr;
  }

  .featured-thumb {
    width: 100%;
    height: 160px;
  }
}

@media (max-width: 600px) {
  .post-grid.fixed-grid {
    grid-template-columns: 1fr;
  }

  .post-thumb {
    height: 180px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .post-header h1 {
    font-size: 28px;
  }

  .post-content > p:first-of-type::first-letter {
    font-size: 48px;
  }

  .section-head h2,
  .section h2 {
    font-size: 24px;
  }
}

/* ═══════════════════════════════════════════════════════════════
   归档页 - Editorial 时间线风格
   ═══════════════════════════════════════════════════════════════ */

.archive-list {
  display: grid;
  gap: var(--space-xl);
}

.archive-group {
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--stroke);
}

.archive-group:last-child {
  border-bottom: none;
}

.archive-group h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  margin: 0 0 var(--space-lg);
  letter-spacing: -0.02em;
}

.archive-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-md);
}

.archive-group li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--stroke);
  transition: border-color 0.2s ease;
}

.archive-group li:last-child {
  border-bottom: none;
}

.archive-group li:hover {
  border-color: var(--stroke-hover);
}

.archive-group li a {
  font-family: var(--font-serif);
  font-size: 17px;
  transition: color 0.2s ease;
}

.archive-group li a:hover {
  color: var(--accent);
}

/* ═══════════════════════════════════════════════════════════════
   搜索结果页
   ═══════════════════════════════════════════════════════════════ */

.search-results {
  display: grid;
  gap: var(--space-lg);
}

.search-result-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--stroke);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item h3 {
  margin: 0 0 var(--space-sm);
  font-size: 20px;
}

.search-result-item p {
  color: var(--muted);
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════════════════════
   HTMX 加载指示器
   ═══════════════════════════════════════════════════════════════ */

.htmx-indicator {
  opacity: 0;
  transition: opacity 200ms ease-in;
}

.htmx-request .htmx-indicator {
  opacity: 1;
}

.htmx-request.htmx-indicator {
  opacity: 1;
}

/* ═══════════════════════════════════════════════════════════════
   选中状态与焦点样式
   ═══════════════════════════════════════════════════════════════ */

::selection {
  background: var(--ink);
  color: var(--bg);
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

/* ═══════════════════════════════════════════════════════════════
   滚动条美化 (仅 Webkit)
   ═══════════════════════════════════════════════════════════════ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-accent);
}

::-webkit-scrollbar-thumb {
  background: var(--stroke);
  border: 2px solid var(--bg-accent);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}