:root {
  --bg: #fdfdfc;
  --fg: #17171a;
  --muted: #6f6f76;
  --border: #e8e8e6;
  --border-strong: #d7d7d3;
  --accent: #17171a;
  --maxw: 680px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  /* 正文默认字体：手札体（Apple 上即 HanziPen SC），未安装则回退手写体/衬线 */
  --font-hand: "手札体", "HanziPen SC", "Hanzipen SC", "Kaiti SC", KaiTi, 楷体, cursive, serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* 编辑器 / 阅读器页面使用更宽的容器 */
.wide .wrap {
  max-width: 1180px;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* ---------- 头部 ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 15px;
}

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

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

.nav-cta {
  color: var(--fg) !important;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 4px 14px;
}

.nav-cta:hover {
  border-color: var(--fg);
}

/* ---------- 主体 ---------- */
main.wrap {
  padding-top: 56px;
  padding-bottom: 96px;
}

/* ---------- 列表 ---------- */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.post-item:first-child {
  border-top: 1px solid var(--border);
}

.post-item > a {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 12px;
}

.post-date {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: -0.02em;
  color: var(--muted);
}

.post-title {
  font-size: 18px;
  font-weight: 500;
}

.post-item > a:hover .post-title {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  padding: 1px 6px;
  margin-left: 8px;
  vertical-align: middle;
}

/* ---------- 文章详情 ---------- */
.post-header {
  margin-bottom: 40px;
}

.post-heading {
  margin: 0 0 12px;
  font-size: 34px;
  font-weight: 650;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}

.post-actions {
  margin-top: 16px;
}

.back {
  margin-top: 56px;
  font-size: 15px;
}

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

.back a:hover {
  color: var(--fg);
}

/* ---------- Markdown 正文 ---------- */
.prose {
  font-family: var(--font-hand);
}

.prose > *:first-child {
  margin-top: 0;
}

.prose p {
  margin: 0 0 20px;
}

.prose h2 {
  margin: 40px 0 12px;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.prose h3 {
  margin: 32px 0 8px;
  font-size: 19px;
  font-weight: 600;
}

.prose ul,
.prose ol {
  margin: 0 0 20px;
  padding-left: 24px;
}

.prose li {
  margin: 4px 0;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--border-strong);
}

.prose a:hover {
  text-decoration-color: var(--fg);
}

.prose blockquote {
  margin: 24px 0;
  padding: 2px 0 2px 20px;
  border-left: 2px solid var(--border-strong);
  color: var(--muted);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: #f0f0ee;
  padding: 2px 5px;
  border-radius: 4px;
}

.prose pre {
  margin: 0 0 20px;
  padding: 16px 18px;
  background: #f6f6f4;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
}

.prose pre code {
  background: none;
  padding: 0;
  font-size: 13.5px;
  line-height: 1.6;
}

.prose img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}

.prose hr {
  margin: 40px 0;
  border: none;
  border-top: 1px solid var(--border);
}

.prose table {
  width: 100%;
  margin: 0 0 20px;
  border-collapse: collapse;
  font-size: 15px;
}

.prose th,
.prose td {
  padding: 8px 10px;
  border: 1px solid var(--border);
  text-align: left;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  font: inherit;
  font-size: 14px;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: #000;
}

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--fg);
}

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

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

.site-footer {
  margin-top: 40px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 登录 ---------- */
.login {
  max-width: 340px;
  margin: 40px auto 0;
}

.login-title {
  margin: 0 0 24px;
  font-size: 26px;
  letter-spacing: -0.02em;
}

.form label {
  display: block;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--muted);
}

.form input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font: inherit;
  font-size: 16px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
}

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

.form .btn {
  width: 100%;
  margin-top: 8px;
}

.alert {
  margin: 0 0 20px;
  padding: 10px 12px;
  font-size: 14px;
  color: #a11;
  background: #fdecec;
  border: 1px solid #f3c9c9;
  border-radius: 8px;
}

/* ---------- 管理列表 ---------- */
.admin-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.page-title {
  margin: 0;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.admin-list .post-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-list .post-item > a {
  flex: 1;
  min-width: 0;
}

.post-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: none;
  font-size: 13px;
  color: var(--muted);
}

.post-tools a {
  color: var(--muted);
}

.post-tools a:hover {
  color: var(--fg);
}

.post-tools form {
  display: inline;
  margin: 0;
}

.link-danger {
  padding: 0;
  font: inherit;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
}

.link-danger:hover {
  color: #b91c1c;
}

/* ---------- 编辑器 ---------- */
.editor-title {
  width: 100%;
  margin-bottom: 18px;
  padding: 0 0 14px;
  font: inherit;
  font-size: 28px;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--fg);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
}

.editor-title:focus {
  outline: none;
  border-color: var(--border-strong);
}

.tags-field {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 14px;
  color: var(--muted);
}

.tags-field > span {
  flex: none;
}

.tags-input {
  flex: 1;
  padding: 8px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
}

.tags-input:focus {
  outline: none;
  border-color: var(--fg);
}

.editor-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 16px;
  margin-bottom: 16px;
}

.editor-pane {
  position: relative;
  min-width: 0;
}

.editor-gutter {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 2;
  width: 34px;
  overflow: hidden;
  pointer-events: none;
}

.editor-gutter-inner {
  position: relative;
}

.line-handle {
  position: absolute;
  left: 0;
  width: 100%;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.line-handle button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  padding: 0;
  font: inherit;
  font-size: 17px;
  line-height: 1;
  color: var(--muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  opacity: 0.5;
  pointer-events: auto;
  transition: opacity 0.12s ease, background 0.12s ease, color 0.12s ease;
}

.line-handle button:hover {
  opacity: 1;
  color: var(--fg);
  background: #ececea;
}

.insert-menu {
  position: fixed;
  z-index: 50;
  min-width: 190px;
  max-height: min(70vh, 420px);
  overflow-y: auto;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.13), 0 2px 6px rgba(0, 0, 0, 0.06);
}

.insert-sep {
  height: 1px;
  margin: 5px 8px;
  background: var(--border);
}

.hico {
  flex: none;
  width: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  color: var(--muted);
}

.insert-item:hover .hico {
  color: var(--fg);
}

.insert-menu[hidden] {
  display: none;
}

.insert-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  font: inherit;
  font-size: 14px;
  text-align: left;
  color: var(--fg);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.insert-item svg {
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--muted);
}

.insert-item:hover {
  background: #f4f4f2;
}

.insert-item:hover svg {
  color: var(--fg);
}

.vis {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
}

.vis select {
  padding: 6px 8px;
  font: inherit;
  font-size: 14px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
}

.editor-actions {
  display: flex;
  gap: 10px;
}

.editor-status {
  margin: 0 0 14px;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--muted);
  background: #f6f6f4;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.editor-status[data-kind='ok'] {
  color: #166534;
  background: #f0fdf4;
  border-color: #bbf7d0;
}

.editor-status[data-kind='err'] {
  color: #b91c1c;
  background: #fef2f2;
  border-color: #fecaca;
}

/* 恢复临时草稿的提示条 */
.draft-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  padding: 9px 12px;
  font-size: 13px;
  color: #7a5b00;
  background: #fff8e1;
  border: 1px solid #f0d98a;
  border-radius: 8px;
}

.draft-banner > span {
  flex: 1 1 auto;
}

/* ---------- 行内格式工具栏 ---------- */
.editor-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
  padding: 6px 8px;
  background: #fafaf8;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.tb-sep {
  width: 1px;
  align-self: stretch;
  margin: 2px 4px;
  background: var(--border);
}

.tb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 30px;
  padding: 0 8px;
  font: inherit;
  font-size: 14px;
  line-height: 1;
  color: var(--fg);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
}

.tb-btn:hover {
  background: #ececea;
}

.tb-btn:active {
  background: #e3e3e0;
}

.tb-btn-text {
  font-size: 13px;
  color: var(--muted);
}

.tb-select {
  height: 30px;
  padding: 0 8px;
  font: inherit;
  font-size: 13px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  cursor: pointer;
}

.tb-cap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 30px;
  margin-right: 2px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  color: var(--fg);
  border-bottom: 2px solid #c0392b;
  cursor: default;
}

.tb-cap-hl {
  border-bottom-color: transparent;
  background: #fff3a3;
  border-radius: 4px;
}

.tb-swatch {
  width: 22px;
  height: 22px;
  padding: 0;
  background: var(--sw, #fff);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  cursor: pointer;
}

.tb-swatch:hover {
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.12);
}

.tb-swatch-pick {
  display: inline-flex;
  overflow: hidden;
}

.tb-swatch-pick input[type='color'] {
  width: 100%;
  height: 100%;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
}

/* 高亮底色：内联 style 未覆盖时的默认色（阅读页同样生效） */
.prose mark {
  padding: 0 1px;
  background: #fff3a3;
}

.editor-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
}

.editor-body {
  width: 100%;
  min-height: 72vh;
  padding: 16px 16px 16px 44px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 24px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  resize: vertical;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow: auto;
  tab-size: 2;
}

.editor-body:focus {
  outline: none;
  border-color: var(--fg);
}

/* 与 .editor-body 同宽同字体的隐藏镜像，用于测量软换行后每一逻辑行的实际位置 */
.editor-mirror {
  position: absolute;
  top: 0;
  left: 0;
  box-sizing: border-box;
  visibility: hidden;
  pointer-events: none;
  z-index: -1;
  padding: 16px 16px 16px 44px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 24px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  tab-size: 2;
}

.editor-mirror > div {
  min-height: 24px;
}

.editor-preview {
  min-height: 72vh;
  max-height: 82vh;
  overflow-y: auto;
  padding: 16px;
  border: 1px dashed var(--border-strong);
  border-radius: 10px;
  overflow-wrap: anywhere;
}

/* ---------- 侧栏文档阅读器 ---------- */
.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

@media (min-width: 900px) {
  /* 阅读器打开时占满宽度，右侧面板约为屏幕的一半 */
  body.reader-open .wrap {
    max-width: 100%;
  }

  body.reader-open .post-layout {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 50vw);
    align-items: start;
  }
}

.reader {
  position: sticky;
  top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: calc(100vh - 32px);
  max-height: 1200px;
}

.reader[hidden] {
  display: none;
}

.reader-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 12px;
}

.reader-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  flex: none;
  font-size: 13px;
}

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

.reader-open:hover {
  color: var(--fg);
}

.reader-pref {
  padding: 5px 10px;
  font: inherit;
  font-size: 13px;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  cursor: pointer;
}

.reader-pref:hover {
  color: var(--fg);
  border-color: var(--fg);
}

/* 打开方式选择菜单 */
.open-menu {
  position: fixed;
  z-index: 60;
  min-width: 214px;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.13), 0 2px 6px rgba(0, 0, 0, 0.06);
}

.open-menu-title {
  padding: 6px 10px 8px;
  font-size: 12px;
  color: var(--muted);
}

.open-item {
  display: block;
  width: 100%;
  padding: 8px 10px;
  font: inherit;
  font-size: 14px;
  text-align: left;
  color: var(--fg);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.open-item:hover {
  background: #f4f4f2;
}

.open-menu-hint {
  margin-top: 4px;
  padding: 8px 10px 4px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.reader-close {
  padding: 5px 12px;
  font: inherit;
  font-size: 13px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  cursor: pointer;
}

.reader-close:hover {
  border-color: var(--fg);
}

.reader-body {
  flex: 1;
  display: flex;
  min-height: 0;
}

.reader-frame {
  flex: 1;
  width: 100%;
  min-height: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

/* ---------- 面板标签 + 笔记 ---------- */
.reader-tabs {
  display: flex;
  gap: 6px;
}

.reader-tab {
  padding: 6px 12px;
  font: inherit;
  font-size: 13px;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
}

.reader-tab:hover {
  color: var(--fg);
}

.reader-tab.is-active {
  color: var(--fg);
  background: #f4f4f2;
  border-color: var(--border);
}

.tab-count {
  font-family: var(--font-mono);
  font-size: 11px;
}

.reader-notes {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 2px;
}

.note {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.note:first-child {
  padding-top: 0;
}

.note-summary {
  display: flex;
  align-items: baseline;
  gap: 8px;
  cursor: pointer;
  font-weight: 500;
}

.note-summary::-webkit-details-marker {
  display: none;
}

.note-badge {
  flex: none;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
}

.note-q {
  font-size: 15px;
}

.note-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.note-page {
  padding: 2px 8px;
  font: inherit;
  font-size: 12px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  cursor: pointer;
}

.note-page:hover {
  border-color: var(--fg);
}

.note-img {
  display: block;
  max-width: 100%;
  margin: 10px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.note-answer {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.65;
}

.note-answer p {
  margin: 0 0 10px;
}

.note-answer p:last-child {
  margin-bottom: 0;
}

.note-answer h1,
.note-answer h2,
.note-answer h3 {
  margin: 12px 0 6px;
  font-size: 1.05em;
}

.note-answer pre {
  font-size: 12.5px;
}

.note-follow {
  margin-top: 12px;
  padding-left: 10px;
  border-left: 2px solid var(--border);
}

.note-follow-q {
  margin-bottom: 4px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 全屏 ---------- */
.reader:fullscreen {
  width: 100vw;
  height: 100vh;
  padding: 16px;
  background: var(--bg);
}

.embed-link::after {
  content: " ↗";
  font-size: 0.8em;
  color: var(--muted);
}

/* KaTeX 公式在窄屏可横向滚动，避免溢出 */
.prose .katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 4px 0;
}

.prose img {
  cursor: default;
}

/* ---------- 搜索与归档 ---------- */
.search-form {
  margin-bottom: 28px;
}

.search-form input {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: 16px;
  color: var(--fg);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
}

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

.search-meta {
  margin: -12px 0 20px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-head {
  margin-bottom: 28px;
}

.page-head .page-title {
  margin-bottom: 6px;
}

.crumb {
  margin: 0 0 10px;
  font-size: 14px;
}

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

.crumb a:hover {
  color: var(--fg);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.tag-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.01em;
  color: var(--muted);
  background: #f4f4f2;
  border: 1px solid var(--border);
  border-radius: 999px;
}

a.tag:hover {
  color: var(--fg);
  background: #efefec;
  border-color: var(--border-strong);
}

.tag-static {
  background: transparent;
}

.tag-count {
  font-size: 11px;
  opacity: 0.7;
}

.tag-all {
  font-size: 13px;
  color: var(--muted);
}

.tag-all:hover {
  color: var(--fg);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-lg {
  padding: 6px 14px;
  font-size: 14px;
}

/* ---------- 错误页 ---------- */
.error {
  padding: 40px 0;
  text-align: center;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--muted);
}

.error-title {
  margin: 8px 0 24px;
  font-size: 28px;
  letter-spacing: -0.02em;
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .editor-split {
    grid-template-columns: 1fr;
  }

  .editor-preview {
    min-height: 30vh;
  }
}

@media (max-width: 560px) {
  main.wrap {
    padding-top: 40px;
  }

  .post-item > a {
    flex-direction: column;
    gap: 6px;
  }

  .post-heading {
    font-size: 28px;
  }
}