:root {
  --bg: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --card: #f8fafc;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --shadow: 0 8px 24px rgba(0,0,0,.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --card: #121826;
    --border: #1f2937;
    --primary: #60a5fa;
    --primary-600: #3b82f6;
    --shadow: 0 8px 24px rgba(0,0,0,.4);
  }
}

html.dark {
  --bg: #0b0f17;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --card: #121826;
  --border: #1f2937;
  --primary: #60a5fa;
  --primary-600: #3b82f6;
  --shadow: 0 8px 24px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container { width: min(1100px, 92%); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo { font-size: 18px; }
.site-title { color: var(--text); text-decoration: none; font-weight: 700; }
.header-actions { display: flex; align-items: center; gap: 8px; flex-wrap: nowrap; }

.search input {
  padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--card); color: var(--text);
  width: 240px; min-width: 200px; max-width: 100%;
}
.icon-btn { 
  border: 1px solid var(--border); 
  background: var(--card); 
  color: var(--text); 
  padding: 8px 10px; 
  border-radius: 10px; 
  cursor: pointer; 
  flex-shrink: 0;
  white-space: nowrap;
}
.icon-btn:hover { filter: brightness(1.05); }

.tags-bar { display: flex; gap: 8px; padding: 10px 0 14px; flex-wrap: wrap; }
.tag { padding: 6px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--card); cursor: pointer; color: var(--text); }
.tag.is-active, .tag:hover { border-color: var(--primary); color: var(--primary-600); }

.layout { 
  display: grid; 
  grid-template-columns: 2fr 1fr; 
  gap: 0; 
  padding: 20px 0 40px; 
  position: relative; 
  min-height: 100vh;
}

/* 分隔线 - 使用更柔和的颜色，在模态对话框下方被覆盖 */
.layout::before { 
  content: ''; 
  position: absolute; 
  top: 0; 
  bottom: 0; 
  left: calc(66.67% - 1px); 
  width: 1px; 
  border-left: 1px solid rgba(0, 0, 0, 0.08);
  z-index: 0;
}

/* 暗色主题下的分界线 */
html.dark .layout::before {
  border-left-color: rgba(255, 255, 255, 0.1);
}

/* 内容区域和侧边栏的间距 */
.content {
  padding-right: 24px;
  position: relative;
  z-index: 0;
}

.sidebar {
  padding-left: 24px;
  position: relative;
  z-index: 0;
}

/* 确保布局容器有最小高度 */
.layout {
  min-height: calc(100vh - 200px);
}

/* 侧边栏折叠状态 */
.layout.sidebar-collapsed {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.layout.sidebar-collapsed::before {
  display: none;
}

.layout.sidebar-collapsed .content {
  padding-right: 0;
  padding-left: 0;
  max-width: 800px;
  width: 100%;
  flex: 0 0 auto;
}

.layout.sidebar-collapsed .sidebar {
  display: none;
}

/* 响应式布局 - 移动端优先 */
@media (max-width: 1200px) {
  .layout { grid-template-columns: 1.5fr 1fr; }
  .layout::before { left: calc(60% - 1px); }
  .content { padding-right: 20px; }
  .sidebar { padding-left: 20px; }
}

@media (max-width: 800px) {
  .layout { 
    grid-template-columns: 1fr; 
    gap: 20px;
  }
  .layout::before { 
    display: none; 
  }
  .content { 
    padding-right: 0; 
    padding-bottom: 0;
  }
  .sidebar { 
    padding-left: 0; 
    padding-top: 0;
    order: -1; /* 侧边栏在移动端显示在内容上方 */
  }
  
  /* 移动端侧边栏关闭时完全居中 */
  .layout.sidebar-collapsed {
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }
  .layout.sidebar-collapsed .content {
    padding-right: 0;
    padding-left: 0;
    max-width: 100%;
    width: 100%;
    flex: 0 0 auto;
  }
  .layout.sidebar-collapsed .sidebar {
    display: none;
  }
}

@media (max-width: 600px) {
  .layout { 
    gap: 16px;
    padding: 12px 0 24px;
  }
  .content { 
    padding-right: 0; 
  }
  .sidebar { 
    padding-left: 0; 
  }
  
  /* 移动端侧边栏关闭时完全居中 */
  .layout.sidebar-collapsed {
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }
  .layout.sidebar-collapsed .content {
    padding-right: 0;
    padding-left: 0;
    max-width: 100%;
    width: 100%;
    flex: 0 0 auto;
  }
  .layout.sidebar-collapsed .sidebar {
    display: none;
  }
}

@media (max-width: 400px) {
  .layout { 
    gap: 12px;
    padding: 8px 0 20px;
  }
  .content { 
    padding-right: 0; 
  }
  .sidebar { 
    padding-left: 0; 
  }
  
  /* 移动端侧边栏关闭时完全居中 */
  .layout.sidebar-collapsed {
    display: flex;
    justify-content: center;
    align-items: flex-start;
  }
  .layout.sidebar-collapsed .content {
    padding-right: 0;
    padding-left: 0;
    max-width: 100%;
    width: 100%;
    flex: 0 0 auto;
  }
  .layout.sidebar-collapsed .sidebar {
    display: none;
  }
}

.post-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }

@media (max-width: 720px) {
  .post-list {
    gap: 16px;
  }
  
  /* 移动端头部样式 */
  .site-header {
    padding: 6px 0;
  }
  .header-inner {
    padding: 4px 0;
    gap: 8px;
  }
  .logo {
    font-size: 14px;
  }
  .site-title {
    font-size: 14px;
  }
  .search input {
    padding: 6px 8px;
    font-size: 12px;
    width: 140px;
  }
  .icon-btn {
    padding: 6px 8px;
    font-size: 11px;
  }
  .tags-bar {
    gap: 6px;
    padding: 6px 0 10px;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .tag {
    padding: 4px 10px;
    font-size: 12px;
    border-radius: 16px;
  }
}

@media (max-width: 480px) {
  .post-list {
    gap: 12px;
  }
  
  .tags-bar {
    gap: 4px;
    padding: 4px 0 8px;
  }
  .tag {
    padding: 3px 8px;
    font-size: 11px;
    border-radius: 14px;
  }
}
.post-card { display: grid; grid-template-columns: 240px 1fr; gap: 16px; padding: 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--card); box-shadow: var(--shadow); }
@media (max-width: 900px) { .post-card { grid-template-columns: 200px 1fr; } }
@media (max-width: 720px) { 
  .post-card { 
    grid-template-columns: 1fr; 
    padding: 12px;
    gap: 12px;
    border-radius: 12px;
  }
  .post-title {
    font-size: 16px;
    line-height: 1.3;
    margin-bottom: 8px;
  }
  .post-desc {
    font-size: 14px;
    margin: 8px 0 12px;
    line-height: 1.4;
  }
  .post-date {
    font-size: 12px;
  }
  .cover img {
    aspect-ratio: 16/9;
    border-radius: 8px;
  }
  .cover {
    border-radius: 8px;
  }
}
.cover { display: block; border-radius: 10px; overflow: hidden; }
.cover img { display: block; width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/10; }
.post-title { font-weight: 700; color: var(--text); text-decoration: none; }
.post-title:hover { color: var(--primary-600); }
.post-desc { margin: 8px 0 10px; color: var(--muted); }
.post-extra { display: flex; align-items: center; gap: 10px; }
.post-date { color: var(--muted); font-size: 14px; }
.spacer { flex: 1; }

.comment-box { margin-top: 8px; }
.comment-editor { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.comment-input { width: 100%; min-height: 120px; padding: 10px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.comment-preview { border-radius: 10px; border: 1px dashed var(--border); padding: 10px; min-height: 120px; background: color-mix(in oklab, var(--card) 86%, transparent); }
@media (max-width: 720px) { .comment-editor { grid-template-columns: 1fr; } }

.sidebar { 
  display: grid; 
  gap: 16px; 
  position: relative;
}
.profile { padding: 16px; border: 1px solid var(--border); border-radius: 14px; background: var(--card); box-shadow: var(--shadow); text-align: center; }
.avatar { width: 88px; height: 88px; border-radius: 50%; object-fit: cover; display: block; margin: 4px auto 10px; }
.buttons { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.btn { border: 1px solid var(--border); background: var(--bg); color: var(--text); padding: 8px 12px; border-radius: 10px; cursor: pointer; text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary-600); color: white; }
.btn.primary:hover { filter: brightness(1.05); }

.hot-tags { padding: 16px; border: 1px solid var(--border); border-radius: 14px; background: var(--card); box-shadow: var(--shadow); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { padding: 6px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg); color: var(--text); cursor: pointer; }
.chip:hover { border-color: var(--primary); color: var(--primary-600); }

.back-to-top { position: fixed; right: 20px; bottom: 24px; padding: 10px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--card); cursor: pointer; display: none; }
.back-to-top.show { display: inline-block; }

.modal { position: fixed; inset: 0; display: none; }
.modal.show { display: grid; place-items: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.4); z-index: 1; }
.modal-dialog { position: relative; z-index: 2; width: min(92vw, 420px); background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); }
.modal-close { position: absolute; right: 10px; top: 10px; border: none; background: transparent; font-size: 20px; color: var(--muted); cursor: pointer; }
.subscribe-form { display: grid; gap: 12px; margin-top: 6px; }
.subscribe-form input { width: 100%; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }

.site-footer { border-top: 1px solid var(--border); padding: 20px 0; color: var(--muted); text-align: center; }

/* 通用响应式与媒体查询增强 */
img, video, svg, canvas { max-width: 100%; height: auto; }

@media (max-width: 900px) {
  .layout { gap: 18px; padding: 16px 0 28px; }
}

/* 头部区域响应式优化 */
@media (max-width: 1000px) {
  .search input { width: 200px; }
}

@media (max-width: 800px) {
  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 0;
  }
  .brand {
    flex-shrink: 0;
    min-width: 0;
  }
  .header-actions { 
    flex: 1;
    justify-content: flex-end; 
    flex-wrap: nowrap;
    gap: 6px;
    min-width: 0;
  }
  .search input { 
    width: 200px; 
    min-width: 150px; 
    flex: 0 0 auto;
    padding: 10px 12px;
    font-size: 14px;
  }
  .icon-btn {
    flex-shrink: 0;
    padding: 8px 10px;
    font-size: 14px;
    min-width: auto;
  }
}

@media (max-width: 600px) {
  .header-inner { 
    gap: 6px; 
    padding: 6px 0;
  }
  .brand {
    gap: 6px;
    flex-shrink: 0;
  }
  .logo {
    font-size: 16px;
  }
  .site-title {
    font-size: 16px;
  }
  .header-actions { 
    gap: 4px;
    flex: 1;
    min-width: 0;
  }
  .search input { 
    width: 150px;
    min-width: 100px;
    padding: 8px 10px;
    font-size: 13px;
  }
  .icon-btn {
    padding: 8px 10px;
    font-size: 13px;
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .header-inner {
    gap: 4px;
    padding: 4px 0;
  }
  .brand {
    gap: 4px;
    flex-shrink: 0;
  }
  .logo {
    font-size: 14px;
  }
  .site-title {
    font-size: 14px;
  }
  .header-actions {
    gap: 3px;
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
  }
  .search input {
    width: 120px;
    min-width: 80px;
    padding: 6px 8px;
    font-size: 12px;
  }
  .icon-btn {
    padding: 6px 8px;
    font-size: 12px;
    min-width: auto;
  }
}

/* 超小屏幕处理 - 确保按钮始终在同一行 */
@media (max-width: 360px) {
  .header-actions {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .header-actions::-webkit-scrollbar {
    display: none;
  }
  .search input {
    width: 100px;
    min-width: 70px;
    padding: 5px 6px;
    font-size: 11px;
  }
  .icon-btn {
    padding: 5px 6px;
    font-size: 11px;
    min-width: auto;
  }
}

/* 文章卡片响应式优化 */
.post-card iframe {
  width: 100% !important;
  height: auto !important;
  min-height: 260px;
  max-height: 80vh;
  border: 0;
  border-radius: 10px;
  object-fit: contain;
}

@media (max-width: 900px) {
  .post-card iframe { 
    min-height: 240px; 
    max-height: 70vh;
  }
}

@media (max-width: 720px) {
  .post-card iframe { 
    min-height: 220px !important; 
    max-height: 60vh;
  }
}

@media (max-width: 480px) {
  .post-card iframe { 
    min-height: 200px !important; 
    max-height: 50vh;
  }
}

/* 侧边栏响应式优化 */
@media (max-width: 800px) {
  .sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
  }
  .profile {
    padding: 12px;
  }
  .avatar { 
    width: 60px; 
    height: 60px; 
  }
  .buttons { 
    flex-direction: column; 
    align-items: center; 
    gap: 8px;
  }
  .btn { 
    width: 100%; 
    max-width: 150px; 
    padding: 8px 12px;
    font-size: 13px;
  }
  .hot-tags {
    padding: 12px;
  }
  .hot-tags h3 {
    font-size: 14px;
    margin-bottom: 8px;
  }
  .chip {
    padding: 4px 8px;
    font-size: 12px;
  }
}

@media (max-width: 600px) {
  .sidebar {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .avatar { width: 50px; height: 50px; }
  .buttons { flex-direction: row; justify-content: center; }
  .btn { 
    width: auto; 
    max-width: 120px; 
    padding: 6px 10px;
    font-size: 12px;
  }
  .hot-tags h3 {
    font-size: 13px;
  }
  .chip {
    padding: 3px 6px;
    font-size: 11px;
  }
}

@media (max-width: 480px) {
  .tags-bar { 
    padding: 6px 0 10px;
    gap: 6px;
  }
  .tag {
    padding: 4px 8px;
    font-size: 11px;
  }
  
  /* 紧凑的文章卡片样式 */
  .post-card {
    padding: 8px;
    gap: 8px;
    border-radius: 8px;
  }
  .post-title {
    font-size: 14px;
    line-height: 1.2;
  }
  .post-desc { 
    font-size: 12px; 
    margin: 6px 0 8px;
    line-height: 1.3;
  }
  .post-date { 
    font-size: 10px; 
  }
  .cover img {
    aspect-ratio: 16/8;
    border-radius: 6px;
  }
  .cover {
    border-radius: 6px;
  }
  
  /* 侧边栏在极小屏幕上的优化 */
  .sidebar {
    gap: 8px;
  }
  .profile {
    padding: 8px;
  }
  .avatar {
    width: 40px;
    height: 40px;
  }
  .btn {
    padding: 4px 8px;
    font-size: 11px;
  }
  .hot-tags {
    padding: 8px;
  }
  .hot-tags h3 {
    font-size: 12px;
  }
  .chip {
    padding: 2px 4px;
    font-size: 10px;
  }
}

/* 分页控件 */
.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; padding: 18px 0 4px; flex-wrap: wrap; }
.pagination button { border: 1px solid var(--border); background: var(--card); color: var(--text); padding: 8px 12px; border-radius: 10px; cursor: pointer; }
.pagination button[disabled] { opacity: .6; cursor: not-allowed; }
.pagination .is-active { background: var(--primary); border-color: var(--primary-600); color: #fff; }
.pagination input[type="number"] { width: 88px; padding: 8px 10px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }

/* 移动端分页控件优化 */
@media (max-width: 600px) {
  .pagination {
    gap: 4px;
    padding: 12px 0 4px;
  }
  .pagination button {
    padding: 6px 8px;
    font-size: 12px;
  }
  .pagination input[type="number"] {
    width: 60px;
    padding: 6px 8px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .pagination {
    gap: 3px;
    padding: 8px 0 4px;
  }
  .pagination button {
    padding: 4px 6px;
    font-size: 11px;
  }
  .pagination input[type="number"] {
    width: 50px;
    padding: 4px 6px;
    font-size: 11px;
  }
}


.post-card[data-id="post-5"] .cover {
  aspect-ratio: 16/10;         /* 保持原有容器高度/比例 */
  display: flex;                /* 用flex把图片居中 */
  align-items: center;
  justify-content: center;
}
.post-card[data-id="post-5"] .cover img[src$="gtx1_1.png"] {
  aspect-ratio: auto !important;     /* 取消图片自身比例锁定 */
  width: auto !important;
  height: auto !important;
  max-width: 100% !important;        /* 在容器内最大化 */
  max-height: 100% !important;
  object-fit: contain !important;     /* 完整显示，允许留白 */
  object-position: center !important; /* 居中 */
  display: block !important;
  margin: 0 auto !important;
}
/* 指定图片自适应缩放完整显示（仅作用于 gtx1_1.png） */
.cover img[src$="gtx1_1.png"] {
  /* 彻底关闭比例与高度强制，改为按真实比例自适应 */
  aspect-ratio: auto !important;
  width: auto !important;
  height: auto !important;
  /* 在固定比例的容器内最大化显示且不裁剪 */
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain !important;
  object-position: center !important;
  /* 居中（当宽度小于容器时） */
  display: block !important;
  margin-left: auto !important;
  margin-right: auto !important;
}