/* ========================================================================
   算元 SuanyuanLab — 学习笔记站
   书院风样式 · 宣纸 / 墨色 / 朱砂
   ======================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;700&family=Ma+Shan+Zheng&family=ZCOOL+XiaoWei&family=EB+Garamond:ital,wght@0,400;0,500;1,400&display=swap');

/* --- 设计变量 ------------------------------------------------------------ */
:root {
  --paper:      #f4ecd8;   /* 宣纸色背景 */
  --paper-2:    #ede3c9;   /* 略深宣纸（卡片底） */
  --ink:        #2c2826;   /* 墨色文字 */
  --ink-soft:   #5a4f47;   /* 淡墨 */
  --ink-mute:   #8a7e72;   /* 远墨（次要文字） */
  --vermilion:  #a02c2c;   /* 朱砂 */
  --vermilion-d:#7d2020;   /* 深朱砂 */
  --bronze:     #7d6b4f;   /* 古铜 */
  --bamboo:     #5d6e4f;   /* 竹青 */
  --rule:       #c8b994;   /* 浅赭石分隔线 */
  --rule-soft:  #ddd0ad;   /* 极淡分隔线 */

  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'STSong', 'SimSun', serif;
  --font-kai:   'ZCOOL XiaoWei', 'Noto Serif SC', '楷体', 'KaiTi', serif;
  --font-brush: 'Ma Shan Zheng', '楷体', 'KaiTi', serif;
  --font-en:    'EB Garamond', 'Noto Serif SC', serif;
}

/* --- 基础 ---------------------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(rgba(125, 107, 79, 0.04) 1px, transparent 1px),
    radial-gradient(rgba(125, 107, 79, 0.03) 1px, transparent 1px);
  background-size: 28px 28px, 14px 14px;
  background-position: 0 0, 14px 14px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: color 0.2s, border-color 0.2s;
}

a:hover {
  color: var(--vermilion);
  border-bottom-color: var(--vermilion);
}

a.plain, nav a, .seal-link {
  border-bottom: none;
}

p { margin: 0 0 1.1em; }

img { max-width: 100%; height: auto; }

/* --- 页面骨架 ------------------------------------------------------------ */
.wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 32px;
}

.wrap-wide {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
}

/* --- 顶部 / 导航 --------------------------------------------------------- */
.site-header {
  padding: 36px 0 20px;
  border-bottom: 1px solid var(--rule-soft);
  margin-bottom: 56px;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

/* 朱砂印章 logo */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-brush);
  font-size: 30px;
  line-height: 1;
  letter-spacing: -2px;
  border-radius: 4px;
  box-shadow:
    inset 0 0 0 2px var(--vermilion-d),
    inset 0 0 0 4px var(--vermilion),
    0 2px 0 rgba(125, 32, 32, 0.15);
  transform: rotate(-2deg);
  text-decoration: none;
  border-bottom: none;
}

.seal:hover {
  color: var(--paper);
  border-bottom: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name-cn {
  font-family: var(--font-kai);
  font-size: 26px;
  color: var(--ink);
  letter-spacing: 4px;
}

.brand-name-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-mute);
  letter-spacing: 2px;
  margin-top: 4px;
}

nav.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: var(--font-kai);
  font-size: 16px;
  letter-spacing: 3px;
  margin-left: auto;
}

nav.site-nav a {
  color: var(--ink-soft);
  padding-bottom: 2px;
  position: relative;
}

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

nav.site-nav a.active {
  color: var(--vermilion);
}

nav.site-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--vermilion);
  border-radius: 50%;
}

/* --- 首页 hero ----------------------------------------------------------- */
.hero {
  text-align: center;
  padding: 32px 0 72px;
  position: relative;
}

.hero-motto {
  font-family: var(--font-brush);
  font-size: 56px;
  line-height: 1.2;
  letter-spacing: 8px;
  color: var(--ink);
  margin: 0 0 24px;
}

.hero-motto .accent {
  color: var(--vermilion);
}

.hero-sub {
  font-family: var(--font-kai);
  font-size: 19px;
  color: var(--ink-soft);
  letter-spacing: 2px;
  margin: 0;
}

.hero-sub-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 15px;
  color: var(--ink-mute);
  margin-top: 12px;
  letter-spacing: 1px;
}

/* 横向分隔（古风云纹替代品：双线） */
.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 64px 0 48px;
  gap: 16px;
  color: var(--rule);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  max-width: 200px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule-soft);
  height: 4px;
}

.divider span {
  font-family: var(--font-kai);
  color: var(--bronze);
  letter-spacing: 6px;
  font-size: 14px;
}

/* --- 双版块入口（首页） ------------------------------------------------- */
.sections {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 0 0 80px;
}

@media (max-width: 960px) {
  .sections { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .sections { grid-template-columns: 1fr; }
}

.section-card {
  display: block;
  padding: 40px 36px;
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  border-bottom: none;
  position: relative;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.25s, box-shadow 0.25s;
}

.section-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(44, 40, 38, 0.08);
  color: var(--ink);
  border-color: var(--rule);
}

.section-card::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: var(--vermilion);
}

.section-card .label {
  font-family: var(--font-en);
  font-style: italic;
  color: var(--ink-mute);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.section-card h2 {
  font-family: var(--font-kai);
  font-size: 32px;
  letter-spacing: 6px;
  margin: 8px 0 14px;
  color: var(--ink);
}

.section-card .desc {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 18px;
}

.section-card .arrow {
  color: var(--vermilion);
  font-family: var(--font-en);
  font-style: italic;
}

/* --- 文章列表 ------------------------------------------------------------ */
.page-title {
  font-family: var(--font-kai);
  font-size: 36px;
  letter-spacing: 8px;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-title-en {
  font-family: var(--font-en);
  font-style: italic;
  color: var(--ink-mute);
  font-size: 15px;
  letter-spacing: 2px;
  margin: 0 0 16px;
}

.page-intro {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
  border-left: 2px solid var(--rule);
  padding-left: 16px;
  margin: 0 0 56px;
  max-width: 640px;
}

ul.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul.post-list > li {
  padding: 28px 0;
  border-bottom: 1px solid var(--rule-soft);
}

ul.post-list > li:first-child {
  padding-top: 0;
}

.post-meta {
  font-family: var(--font-en);
  font-style: italic;
  color: var(--ink-mute);
  font-size: 13px;
  letter-spacing: 1.5px;
  margin-bottom: 6px;
}

.post-meta .tag {
  display: inline-block;
  margin-left: 12px;
  font-family: var(--font-kai);
  font-style: normal;
  font-size: 12px;
  color: var(--vermilion);
  padding: 1px 8px;
  border: 1px solid var(--vermilion);
  letter-spacing: 2px;
  border-radius: 2px;
}

.post-list h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.5;
  margin: 0 0 8px;
}

.post-list h3 a {
  color: var(--ink);
  border-bottom: none;
}

.post-list h3 a:hover {
  color: var(--vermilion);
}

.post-list .excerpt {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
  margin: 0;
}

/* --- 文章正文页 ---------------------------------------------------------- */
article.post {
  padding-top: 8px;
}

article.post header.post-head {
  margin-bottom: 48px;
  text-align: center;
}

article.post .post-head .tag {
  display: inline-block;
  font-family: var(--font-kai);
  color: var(--vermilion);
  letter-spacing: 4px;
  font-size: 14px;
  padding: 2px 14px;
  border: 1px solid var(--vermilion);
}

article.post h1 {
  font-family: var(--font-kai);
  font-size: 38px;
  letter-spacing: 4px;
  line-height: 1.4;
  margin: 18px 0 14px;
  color: var(--ink);
}

article.post .post-head .post-meta {
  text-align: center;
}

article.post .lead {
  color: var(--ink-soft);
  font-size: 17px;
  border-left: 2px solid var(--vermilion);
  padding-left: 16px;
  margin: 0 0 32px;
  font-family: var(--font-kai);
  letter-spacing: 1px;
}

article.post h2 {
  font-family: var(--font-kai);
  font-size: 24px;
  letter-spacing: 4px;
  margin: 56px 0 18px;
  color: var(--ink);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule-soft);
}

article.post h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 19px;
  margin: 36px 0 12px;
  color: var(--ink);
}

article.post p,
article.post li {
  font-size: 17px;
  line-height: 1.95;
  color: var(--ink);
}

article.post blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  background: var(--paper-2);
  border-left: 3px solid var(--bronze);
  font-family: var(--font-kai);
  color: var(--ink-soft);
  font-size: 16px;
}

article.post code {
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-size: 14px;
  background: var(--paper-2);
  padding: 2px 6px;
  border-radius: 2px;
  color: var(--vermilion-d);
}

article.post pre {
  background: #2c2826;
  color: #f4ecd8;
  padding: 20px 24px;
  border-radius: 3px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}

article.post pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

article.post hr {
  border: none;
  text-align: center;
  margin: 48px 0;
  color: var(--rule);
}

article.post hr::after {
  content: '· · ·';
  letter-spacing: 8px;
  color: var(--bronze);
}

.post-foot {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--rule-soft);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-kai);
  font-size: 15px;
  letter-spacing: 2px;
}

.post-foot a {
  border-bottom: none;
  color: var(--ink-soft);
}

.post-foot a:hover { color: var(--vermilion); }

/* --- 引语 / 关于 / 联系（首页底部块） ----------------------------------- */
.about-block {
  text-align: center;
  margin: 80px 0;
  padding: 48px 24px;
  background: var(--paper-2);
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
}

.about-block .quote {
  font-family: var(--font-brush);
  font-size: 32px;
  color: var(--ink);
  letter-spacing: 4px;
  margin: 0 0 16px;
}

.about-block .quote-source {
  font-family: var(--font-kai);
  font-size: 14px;
  color: var(--ink-mute);
  letter-spacing: 3px;
}

.about-block .about-text {
  max-width: 560px;
  margin: 28px auto 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}

/* --- 页脚 ---------------------------------------------------------------- */
.site-footer {
  margin-top: 80px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--rule-soft);
  text-align: center;
  color: var(--ink-mute);
  font-size: 13px;
  letter-spacing: 1px;
}

.site-footer .footer-seal {
  display: inline-block;
  width: 32px;
  height: 32px;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-brush);
  font-size: 18px;
  line-height: 32px;
  border-radius: 2px;
  margin-bottom: 12px;
  letter-spacing: 0;
}

.site-footer a {
  color: var(--ink-soft);
  border-bottom: none;
}

.site-footer a:hover { color: var(--vermilion); }

.site-footer .icp {
  margin-top: 8px;
  font-family: var(--font-en);
  font-size: 12px;
}

/* ========================================================================
   会客厅（社区） · 登录/注册/列表
   ======================================================================== */

/* --- 顶部导航：工具区 + 用户菜单 ---------------------------------------- */
.nav-auth {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-left: 16px;
  margin-left: 4px;
  border-left: 1px solid var(--rule-soft);
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 2px;
}

.nav-auth:empty { display: none; }

.nav-auth .nav-link-soft,
.nav-link-soft {
  color: var(--ink-mute);
  border-bottom: none;
  font-size: 14px;
  letter-spacing: 2px;
}

.nav-auth .nav-link-soft:hover {
  color: var(--vermilion);
}

/* 用户菜单（头像 + 用户名 + 下拉） */
.user-menu {
  position: relative;
}

.user-menu-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid transparent;
  padding: 4px 10px 4px 6px;
  border-radius: 20px;
  cursor: pointer;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--ink);
  transition: border-color 0.2s, background 0.2s;
}
.user-menu-trigger:hover {
  border-color: var(--rule);
  background: var(--paper-2);
}
.user-menu-trigger .user-menu-name {
  color: var(--vermilion);
}
.user-menu-trigger .user-menu-caret {
  color: var(--ink-mute);
  font-size: 10px;
  transition: transform 0.2s;
}
.user-menu-trigger[aria-expanded="true"] .user-menu-caret {
  transform: rotate(180deg);
}
.user-menu-trigger .avatar {
  margin-right: 0;
}

.user-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--vermilion);
  border-radius: 2px;
  padding: 6px 0;
  box-shadow: 0 6px 20px rgba(44, 40, 38, 0.12);
  z-index: 50;
  display: flex;
  flex-direction: column;
}

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

.user-menu-dropdown a {
  display: block;
  padding: 10px 18px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: none;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 2px;
  transition: background 0.15s, color 0.15s;
}

.user-menu-dropdown a:hover {
  background: var(--paper-2);
  color: var(--vermilion);
}

.user-menu-divider {
  height: 1px;
  background: var(--rule-soft);
  margin: 4px 12px;
}

/* --- 登录 / 注册 表单卡片 ------------------------------------------------ */
.auth-card {
  max-width: 460px;
  margin: 0 auto;
  padding: 8px 0 40px;
}

.auth-card .page-title,
.auth-card .page-title-en,
.auth-card .page-intro {
  text-align: center;
}

.auth-card .page-intro {
  border-left: none;
  padding-left: 0;
  margin-left: auto;
  margin-right: auto;
}

.auth-form {
  margin-top: 32px;
  padding: 36px 32px;
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  border-top: 3px solid var(--vermilion);
}

.auth-form .field {
  margin-bottom: 20px;
}

.auth-form label {
  display: block;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.auth-form label .hint {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0;
  margin-left: 6px;
}

/* 邮箱字段 + "获取验证码" 按钮并排 */
.field-with-action {
  display: flex;
  gap: 8px;
  align-items: stretch;
}
.field-with-action input {
  flex: 1;
  min-width: 0;
}
.field-with-action button {
  flex-shrink: 0;
  white-space: nowrap;
  padding: 0 14px;
  height: auto;
  margin-top: 0;
  font-size: 13px;
  letter-spacing: 2px;
}
.field-with-action button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.auth-form input[type="text"],
.auth-form input[type="email"],
.auth-form input[type="password"],
.auth-form select,
.auth-form textarea {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.auth-form input:focus,
.auth-form select:focus,
.auth-form textarea:focus {
  border-color: var(--vermilion);
  box-shadow: 0 0 0 2px rgba(160, 44, 44, 0.1);
}

.form-msg {
  margin: 14px 0 6px;
  padding: 10px 14px;
  font-size: 14px;
  border-radius: 2px;
  letter-spacing: 1px;
}

.form-msg-ok {
  background: rgba(93, 110, 79, 0.12);
  color: var(--bamboo);
  border: 1px solid rgba(93, 110, 79, 0.3);
}

.form-msg-error {
  background: rgba(160, 44, 44, 0.08);
  color: var(--vermilion-d);
  border: 1px solid rgba(160, 44, 44, 0.25);
}

.btn-primary {
  display: inline-block;
  width: 100%;
  padding: 12px 24px;
  font-family: var(--font-kai);
  font-size: 17px;
  letter-spacing: 8px;
  color: var(--paper);
  background: var(--vermilion);
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  margin-top: 8px;
  text-align: center;
  text-decoration: none;
}

.btn-primary:hover:not(:disabled) {
  background: var(--vermilion-d);
  color: var(--paper);
}

.btn-primary:active:not(:disabled) { transform: translateY(1px); }

.btn-primary:disabled {
  background: var(--ink-mute);
  cursor: not-allowed;
}

.btn-sm {
  width: auto;
  padding: 8px 22px;
  font-size: 14px;
  letter-spacing: 4px;
}

.form-tip {
  margin-top: 18px;
  text-align: center;
  font-size: 14px;
  color: var(--ink-soft);
}

.form-tip a {
  color: var(--vermilion);
  border-bottom: none;
}

/* --- 社区列表页 ---------------------------------------------------------- */
.community-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0 0 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule-soft);
}

.filters {
  display: flex;
  gap: 6px;
}

.filter-btn {
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 3px;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  padding: 6px 14px;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: var(--vermilion);
  color: var(--vermilion);
}

.filter-btn.active {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--paper);
}

.community-toolbar .actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.login-cta {
  font-family: var(--font-kai);
  color: var(--ink-mute);
  font-size: 14px;
  letter-spacing: 1px;
}

.login-cta a {
  color: var(--vermilion);
  border-bottom: none;
  margin: 0 4px;
}

.empty-hint {
  text-align: center;
  padding: 64px 20px;
  color: var(--ink-soft);
  font-family: var(--font-kai);
  letter-spacing: 2px;
  font-size: 16px;
  background: var(--paper-2);
  border: 1px dashed var(--rule);
  border-radius: 2px;
}

.empty-hint code {
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-size: 13px;
  background: var(--paper);
  padding: 2px 6px;
  border-radius: 2px;
  letter-spacing: 0;
  color: var(--vermilion-d);
}

.community-posts .post-author {
  color: var(--ink-mute);
  font-family: var(--font-kai);
  font-style: normal;
  letter-spacing: 1px;
  margin-left: 4px;
}

/* ========================================================================
   发帖编辑器（new-post）
   ======================================================================== */

.post-form {
  margin-top: 16px;
  padding: 36px 32px;
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  border-top: 3px solid var(--vermilion);
}

.post-form .field { margin-bottom: 24px; }

.post-form label {
  display: block;
  font-family: var(--font-kai);
  font-size: 15px;
  letter-spacing: 3px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.post-form label .hint {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 0;
  margin-left: 8px;
}

.post-form input[type="text"],
.post-form textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.post-form input:focus,
.post-form textarea:focus {
  border-color: var(--vermilion);
  box-shadow: 0 0 0 2px rgba(160, 44, 44, 0.1);
}

/* 分类 pill */
.radio-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.radio-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 3px;
  background: var(--paper);
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s;
  margin-bottom: 0;
}
.radio-pill input { display: none; }
.radio-pill:hover { border-color: var(--vermilion); color: var(--vermilion); }
.radio-pill:has(input:checked) {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--paper);
}

/* 编辑器工具栏 */
.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 8px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-bottom: none;
  border-radius: 2px 2px 0 0;
  flex-wrap: wrap;
}
.editor-toolbar button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-soft);
  width: 32px;
  height: 30px;
  padding: 0;
  border-radius: 2px;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.editor-toolbar button:hover {
  border-color: var(--rule);
  background: var(--paper);
  color: var(--vermilion);
}
.editor-toolbar button:active {
  transform: translateY(1px);
}
.editor-toolbar-sep {
  width: 1px;
  height: 18px;
  background: var(--rule);
  margin: 0 4px;
}
.editor-toolbar-spacer {
  flex: 1;
}
.editor-toolbar-hint {
  font-family: var(--font-kai);
  font-size: 12px;
  color: var(--bamboo);
  letter-spacing: 2px;
  padding: 0 8px;
}

/* 工具栏紧贴 editor-split 时去掉重复边框 */
.editor-toolbar + .editor-split {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

/* 拖拽图片到 textarea 时的视觉反馈 */
.editor-drag-over {
  outline: 2px dashed var(--vermilion) !important;
  outline-offset: -4px;
  background: rgba(160, 44, 44, 0.05) !important;
}

/* 编辑器底部提示：粘贴 / 拖拽支持 */
.editor-hint-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 12px;
  font-family: var(--font-kai);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 1px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-top: none;
  border-radius: 0 0 2px 2px;
  flex-wrap: wrap;
  gap: 8px;
}
.editor-hint-bar kbd {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 11px;
  background: var(--paper);
  padding: 1px 6px;
  border-radius: 2px;
  border: 1px solid var(--rule-soft);
  letter-spacing: 0;
  color: var(--ink-soft);
}
.editor-hint-bar .hint-tip {
  color: var(--bamboo);
}

@media (max-width: 640px) {
  .editor-toolbar {
    gap: 2px;
    padding: 4px 6px;
  }
  .editor-toolbar button {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }
  /* 小屏隐藏分隔线和空白填充——节省横向空间 */
  .editor-toolbar-sep,
  .editor-toolbar-spacer {
    display: none;
  }
  /* "草稿已保存" 提示单独换行居中 */
  .editor-toolbar-hint {
    font-size: 11px;
    width: 100%;
    text-align: center;
    margin-top: 4px;
    padding: 0;
  }
}

/* 编辑器双栏 */
.editor-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper);
  overflow: hidden;
}
.editor-split textarea {
  border: none;
  border-right: 1px solid var(--rule-soft);
  border-radius: 0;
  resize: vertical;
  min-height: 380px;
  font-family: 'JetBrains Mono', Consolas, var(--font-serif), monospace;
  font-size: 14.5px;
  line-height: 1.8;
}
.editor-split textarea:focus {
  box-shadow: none;
  border-color: var(--rule-soft);
}
.editor-preview {
  padding: 16px 20px;
  overflow-y: auto;
  max-height: 540px;
  background: var(--paper-2);
}
.preview-empty {
  color: var(--ink-mute);
  font-family: var(--font-kai);
  letter-spacing: 2px;
  text-align: center;
  padding: 40px 0;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.btn-ghost {
  display: inline-block;
  padding: 8px 22px;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}
.btn-ghost:hover {
  border-color: var(--ink-soft);
  color: var(--ink);
}
.btn-ghost.btn-danger {
  color: var(--vermilion-d);
  border-color: rgba(160, 44, 44, 0.4);
}
.btn-ghost.btn-danger:hover {
  background: var(--vermilion);
  color: var(--paper);
  border-color: var(--vermilion);
}

@media (max-width: 720px) {
  .editor-split { grid-template-columns: 1fr; }
  .editor-split textarea { border-right: none; border-bottom: 1px solid var(--rule-soft); }
  .editor-preview { max-height: 280px; }
}

/* ========================================================================
   Markdown 渲染（正文 / 评论预览 / 帖子详情）
   ======================================================================== */

.markdown-body {
  font-family: var(--font-serif);
  color: var(--ink);
  font-size: 16.5px;
  line-height: 1.95;
}
.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  font-family: var(--font-kai);
  color: var(--ink);
  letter-spacing: 2px;
  margin: 1.6em 0 0.6em;
}
.markdown-body h1 { font-size: 26px; }
.markdown-body h2 { font-size: 21px; border-bottom: 1px solid var(--rule-soft); padding-bottom: 6px; }
.markdown-body h3 { font-size: 18px; }
.markdown-body p { margin: 0 0 1em; }
.markdown-body ul,
.markdown-body ol { padding-left: 1.6em; margin: 0 0 1em; }
.markdown-body li { margin-bottom: 4px; }
.markdown-body blockquote {
  margin: 1em 0;
  padding: 10px 18px;
  background: var(--paper-2);
  border-left: 3px solid var(--bronze);
  color: var(--ink-soft);
  font-family: var(--font-kai);
}
.markdown-body code {
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-size: 13.5px;
  background: var(--paper-2);
  padding: 1px 6px;
  border-radius: 2px;
  color: var(--vermilion-d);
}
.markdown-body pre {
  background: #2c2826;
  color: #f4ecd8;
  padding: 16px 20px;
  border-radius: 3px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
  margin: 1em 0;
}
.markdown-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.markdown-body a {
  color: var(--vermilion);
  border-bottom: 1px solid var(--rule);
}
.markdown-body a:hover { border-bottom-color: var(--vermilion); }
.markdown-body hr { border: none; height: 1px; background: var(--rule-soft); margin: 2em 0; }
/* 图片不溢出容器（移动端和长图都防呆） */
.markdown-body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.2em auto;
  border-radius: 2px;
  border: 1px solid var(--rule-soft);
}

.markdown-body table {
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 15px;
}
.markdown-body th,
.markdown-body td {
  border: 1px solid var(--rule);
  padding: 6px 12px;
}
.markdown-body th { background: var(--paper-2); }

/* ========================================================================
   帖子详情页：状态徽章、评论
   ======================================================================== */

.community-post .post-head { margin-bottom: 32px; }

.status-badge {
  display: inline-block;
  margin-left: 10px;
  padding: 2px 10px;
  font-family: var(--font-kai);
  font-size: 12px;
  letter-spacing: 2px;
  border-radius: 2px;
  vertical-align: middle;
}
.status-badge-sm { font-size: 11px; padding: 1px 6px; letter-spacing: 1px; }
.status-pending {
  background: rgba(125, 107, 79, 0.15);
  color: var(--bronze);
  border: 1px solid rgba(125, 107, 79, 0.4);
}
.status-rejected {
  background: rgba(160, 44, 44, 0.1);
  color: var(--vermilion-d);
  border: 1px solid rgba(160, 44, 44, 0.35);
}

.owner-note {
  margin: 0 0 24px;
  padding: 12px 18px;
  background: rgba(125, 107, 79, 0.08);
  border-left: 3px solid var(--bronze);
  font-family: var(--font-kai);
  color: var(--ink-soft);
  font-size: 14px;
  letter-spacing: 1px;
}

#comments-section {
  margin-top: 56px;
}

.comment {
  padding: 16px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.comment:last-child { border-bottom: none; }
.comment.comment-mine { background: rgba(160, 44, 44, 0.03); padding: 16px 16px; margin: 0 -16px; }

.comment-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 1px;
}
.comment-author { color: var(--ink); font-weight: 500; }
.comment-meta   { color: var(--ink-mute); font-size: 12.5px; }
.comment-body   { color: var(--ink); font-size: 15.5px; line-height: 1.85; white-space: pre-wrap; }

.comment-form-area { margin-top: 32px; }

.comment-form {
  padding: 20px 22px;
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  border-radius: 2px;
}
.comment-form label {
  display: block;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.comment-form textarea {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  outline: none;
  resize: vertical;
}
.comment-form textarea:focus {
  border-color: var(--vermilion);
  box-shadow: 0 0 0 2px rgba(160, 44, 44, 0.1);
}

.login-cta-block {
  text-align: center;
  padding: 24px;
  background: var(--paper-2);
  border: 1px dashed var(--rule);
  border-radius: 2px;
  font-family: var(--font-kai);
  color: var(--ink-soft);
  letter-spacing: 2px;
}
.login-cta-block a {
  color: var(--vermilion);
  border-bottom: none;
  margin: 0 4px;
}

/* ========================================================================
   管理员审核台
   ======================================================================== */

.admin-tabs {
  display: flex;
  gap: 0;
  margin: 0 0 32px;
  border-bottom: 1px solid var(--rule);
}
.admin-tab {
  background: transparent;
  border: none;
  padding: 12px 24px;
  font-family: var(--font-kai);
  font-size: 16px;
  letter-spacing: 3px;
  color: var(--ink-mute);
  cursor: pointer;
  position: relative;
  transition: color 0.2s;
}
.admin-tab:hover { color: var(--ink); }
.admin-tab.active { color: var(--vermilion); }
.admin-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--vermilion);
}
.tab-count {
  display: inline-block;
  margin-left: 6px;
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--ink-mute);
  background: var(--paper-2);
  padding: 1px 8px;
  border-radius: 10px;
  letter-spacing: 0;
}
.admin-tab.active .tab-count {
  color: var(--vermilion);
  background: rgba(160, 44, 44, 0.1);
}

.admin-panel {
  display: grid;
  gap: 18px;
}

.review-card {
  padding: 22px 26px;
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--bronze);
  border-radius: 2px;
}

.review-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.review-title {
  font-family: var(--font-serif);
  font-size: 18px;
  margin-left: 8px;
  color: var(--ink);
}
.review-meta {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-mute);
  letter-spacing: 1px;
}

.review-body {
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  padding: 14px 18px;
  border-radius: 2px;
  max-height: 320px;
  overflow-y: auto;
  margin-bottom: 16px;
}
.review-body.comment-plain {
  font-family: var(--font-serif);
  white-space: pre-wrap;
  font-size: 15px;
  line-height: 1.85;
}

.review-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

/* ========================================================================
   Round 1 补完：敬请期待 / 404 / 协议同意 / 备案占位
   ======================================================================== */

/* 列表项「敬请期待」状态 */
.post-list li.post-soon {
  opacity: 0.62;
}
.post-list li.post-soon h3 {
  color: var(--ink-mute);
  font-weight: 400;
}
.post-list li.post-soon h3::after {
  content: '敬请期待';
  margin-left: 12px;
  font-family: var(--font-kai);
  font-size: 11.5px;
  color: var(--vermilion);
  letter-spacing: 2px;
  border: 1px solid rgba(160, 44, 44, 0.35);
  padding: 1px 8px;
  border-radius: 2px;
  vertical-align: middle;
  white-space: nowrap;
}
.post-list li.post-soon .excerpt {
  color: var(--ink-mute);
}

/* 404 页 */
.not-found {
  text-align: center;
  padding: 96px 20px 120px;
}
.not-found-num {
  font-family: var(--font-brush);
  font-size: 88px;
  color: var(--vermilion);
  letter-spacing: 16px;
  opacity: 0.85;
  margin: 0 0 24px;
  user-select: none;
  line-height: 1;
}
.not-found-title {
  font-family: var(--font-kai);
  font-size: 32px;
  letter-spacing: 8px;
  color: var(--ink);
  margin: 0 0 20px;
}
.not-found-sub {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.95;
  max-width: 480px;
  margin: 0 auto 40px;
  font-family: var(--font-kai);
  letter-spacing: 1px;
}
.not-found-links {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.not-found-links .btn-primary,
.not-found-links .btn-ghost {
  width: auto;
  margin-top: 0;
}

/* 注册页协议同意 */
.terms-agree {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 18px 0 8px;
  font-family: var(--font-serif);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-soft);
  letter-spacing: 0;
}
.terms-agree input[type="checkbox"] {
  margin-top: 4px;
  width: 14px;
  height: 14px;
  accent-color: var(--vermilion);
  flex-shrink: 0;
  cursor: pointer;
}
.terms-agree a {
  color: var(--vermilion);
  border-bottom: none;
}
.terms-agree a:hover { border-bottom: 1px solid var(--vermilion); }

/* 备案号占位 */
.icp-pending {
  color: var(--vermilion-d);
  background: rgba(160, 44, 44, 0.08);
  padding: 0 6px;
  border-radius: 2px;
  font-family: var(--font-kai);
  letter-spacing: 1px;
}

/* ========================================================================
   Round 2：编辑/删除 · 翻页 · 账户中心 · 评论就地编辑
   ======================================================================== */

/* 顶部用户名挂链接 */
a.nav-user {
  color: var(--vermilion);
  text-decoration: none;
  border-bottom: none;
  letter-spacing: 1px;
  font-family: var(--font-kai);
  font-size: 15px;
}
a.nav-user:hover {
  text-decoration: underline;
  text-decoration-color: var(--vermilion);
  text-underline-offset: 4px;
}

/* 帖子顶部「编辑 / 删除」按钮组 */
.post-manage {
  margin-top: 18px;
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* mini 按钮（用于内联操作） */
.btn-mini {
  padding: 4px 14px;
  font-size: 13px;
  letter-spacing: 3px;
  width: auto;
  margin-top: 0;
}

/* 加载更多 / 已至卷末 */
.load-more {
  text-align: center;
  margin: 48px 0 24px;
}
.load-more button {
  min-width: 240px;
}
.list-end {
  text-align: center;
  margin: 48px 0 24px;
  font-family: var(--font-kai);
  color: var(--ink-mute);
  letter-spacing: 4px;
  font-size: 13.5px;
}

/* 评论右下角操作 */
.comment-actions {
  display: flex;
  gap: 14px;
  justify-content: flex-end;
  margin-top: 6px;
}
.comment-action {
  background: transparent;
  border: none;
  color: var(--ink-mute);
  font-family: var(--font-kai);
  font-size: 12.5px;
  letter-spacing: 2px;
  cursor: pointer;
  padding: 2px 4px;
  transition: color 0.2s;
}
.comment-action:hover         { color: var(--ink); }
.comment-action-danger:hover  { color: var(--vermilion); }

/* 评论就地编辑 */
.comment-edit { margin-top: 6px; }
.comment-edit textarea {
  width: 100%;
  padding: 8px 12px;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  outline: none;
  resize: vertical;
  line-height: 1.7;
}
.comment-edit textarea:focus {
  border-color: var(--vermilion);
  box-shadow: 0 0 0 2px rgba(160, 44, 44, 0.1);
}
.comment-edit-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 8px;
}

/* 账户中心 */
.account-block { margin: 0 0 56px; }
.account-h2 {
  font-family: var(--font-kai);
  font-size: 22px;
  letter-spacing: 6px;
  color: var(--ink);
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule-soft);
}

.account-info {
  background: var(--paper-2);
  padding: 16px 28px;
  border-left: 3px solid var(--vermilion);
  border-radius: 2px;
}
.info-row {
  display: flex;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--rule-soft);
}
.info-row:last-child { border-bottom: none; }
.info-k {
  width: 100px;
  flex-shrink: 0;
  font-family: var(--font-kai);
  color: var(--ink-soft);
  letter-spacing: 4px;
  font-size: 14px;
}
.info-v {
  color: var(--ink);
  font-size: 15.5px;
  font-family: var(--font-serif);
  word-break: break-all;
}

.my-posts-list > li {
  padding: 18px 0;
}

/* ========================================================================
   我的消息（Notifications）
   ======================================================================== */

.account-h2-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule-soft);
}
.account-h2-row .account-h2 {
  border-bottom: none;
  padding-bottom: 0;
  margin: 0;
}

/* 标题旁的未读数徽章 */
.notif-badge {
  display: inline-block;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-en);
  font-style: italic;
  font-size: 12px;
  padding: 1px 9px;
  border-radius: 10px;
  margin-left: 10px;
  letter-spacing: 0;
  vertical-align: middle;
}

/* 顶部头像旁的红点（无数字） */
.notif-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--vermilion);
  border-radius: 50%;
  position: absolute;
  top: 3px;
  right: 12px;
}
.user-menu-trigger { position: relative; }

/* 下拉菜单 "我的消息" 旁的数字徽章 */
.notif-badge-inline {
  display: inline-block;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-en);
  font-style: italic;
  font-size: 11px;
  padding: 0 7px;
  border-radius: 9px;
  margin-left: 6px;
  letter-spacing: 0;
}

/* 通知列表 */
.notif-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.notif-item {
  padding: 14px 16px;
  border-bottom: 1px solid var(--rule-soft);
  position: relative;
  transition: background 0.15s;
}
.notif-item:last-child { border-bottom: none; }
.notif-item.notif-unread {
  background: rgba(160, 44, 44, 0.04);
  border-left: 3px solid var(--vermilion);
  padding-left: 13px;
}

.notif-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}
.notif-icon {
  font-family: var(--font-kai);
  color: var(--vermilion);
  font-size: 16px;
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}
.notif-item:not(.notif-unread) .notif-icon {
  color: var(--ink-mute);
}
.notif-title {
  font-family: var(--font-serif);
  font-size: 15.5px;
  color: var(--ink);
  font-weight: 500;
  flex: 1;
  min-width: 0;
}
.notif-time {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 1px;
}
.notif-content {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
  margin: 4px 0 8px;
  padding-left: 28px;
}
.notif-actions {
  display: flex;
  gap: 12px;
  padding-left: 28px;
  flex-wrap: wrap;
}
.notif-link {
  color: var(--vermilion);
  border-bottom: none;
  font-family: var(--font-kai);
  font-size: 12.5px;
  letter-spacing: 2px;
}
.notif-link:hover { text-decoration: underline; }

/* ========================================================================
   联系我们 · 邮箱卡片
   ======================================================================== */

.contact-card {
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--vermilion);
  border-radius: 2px;
  padding: 28px 32px;
  margin: 32px 0;
  text-align: center;
}
.contact-label {
  font-family: var(--font-kai);
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--ink-mute);
  margin-bottom: 12px;
}
.contact-email {
  display: block;
  font-family: 'EB Garamond', var(--font-serif), monospace;
  font-size: 28px;
  color: var(--vermilion);
  text-decoration: none;
  border-bottom: none;
  letter-spacing: 2px;
  margin: 0 0 16px;
  font-weight: 500;
  user-select: all;
}
.contact-email:hover {
  color: var(--vermilion-d);
  text-decoration: underline;
  text-underline-offset: 6px;
  text-decoration-color: var(--vermilion);
}
.contact-copy-btn {
  width: auto;
  padding: 6px 18px;
  margin-top: 0;
}

@media (max-width: 640px) {
  .contact-card { padding: 22px 18px; }
  .contact-email { font-size: 22px; letter-spacing: 1px; }
}

/* Footer 链接（用户协议 / 隐私 / 联系我们） */
.footer-links {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--ink-mute);
}
.footer-links a {
  color: var(--ink-soft);
  border-bottom: none;
  margin: 0 2px;
}
.footer-links a:hover {
  color: var(--vermilion);
}

/* ========================================================================
   书院风对话框（替代 alert / confirm / prompt）
   ======================================================================== */

.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(44, 40, 38, 0);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.18s ease, background 0.18s ease;
  backdrop-filter: blur(0px);
}
.dialog-overlay.dialog-show {
  opacity: 1;
  background: rgba(44, 40, 38, 0.42);
  backdrop-filter: blur(4px);
}

[data-theme="dark"] .dialog-overlay.dialog-show {
  background: rgba(0, 0, 0, 0.65);
}

.dialog-box {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--vermilion);
  border-radius: 4px;
  padding: 32px 32px 24px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(44, 40, 38, 0.25);
  text-align: center;
  transform: translateY(-12px) scale(0.96);
  transition: transform 0.22s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}
.dialog-overlay.dialog-show .dialog-box {
  transform: translateY(0) scale(1);
}

/* 类型变体 */
.dialog-box.dialog-info   { border-top-color: var(--bronze); }
.dialog-box.dialog-ok     { border-top-color: var(--bamboo); }
.dialog-box.dialog-warn   { border-top-color: #c8a040; }
.dialog-box.dialog-danger { border-top-color: var(--vermilion-d); }
.dialog-box.dialog-ask    { border-top-color: var(--vermilion); }

.dialog-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--vermilion);
  color: var(--paper);
  border-radius: 50%;
  font-family: var(--font-brush);
  font-size: 32px;
  line-height: 1;
  margin: 0 auto 18px;
  font-weight: 700;
  box-shadow: inset 0 0 0 2px var(--vermilion-d);
}
.dialog-info   .dialog-icon { background: var(--bronze);     box-shadow: inset 0 0 0 2px #5d4f37; }
.dialog-ok     .dialog-icon { background: var(--bamboo);     box-shadow: inset 0 0 0 2px #4a5e3e; }
.dialog-warn   .dialog-icon { background: #c8a040;            box-shadow: inset 0 0 0 2px #8d7028; }
.dialog-danger .dialog-icon { background: var(--vermilion-d); }
.dialog-ask    .dialog-icon { background: var(--vermilion); }

.dialog-title {
  font-family: var(--font-kai);
  font-size: 20px;
  letter-spacing: 4px;
  color: var(--ink);
  margin-bottom: 8px;
}

.dialog-message {
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  word-wrap: break-word;
}

.dialog-input {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 2px;
  outline: none;
  margin-bottom: 20px;
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.dialog-input:focus {
  border-color: var(--vermilion);
  box-shadow: 0 0 0 2px rgba(160, 44, 44, 0.12);
}

.dialog-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}
.dialog-actions button {
  min-width: 96px;
  padding: 9px 22px;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 4px;
  margin-top: 0;
  width: auto;
}
.dialog-cancel-btn {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s;
}
.dialog-cancel-btn:hover {
  border-color: var(--ink-soft);
  color: var(--ink);
}

/* 小屏调整 */
@media (max-width: 480px) {
  .dialog-box { padding: 24px 22px 20px; }
  .dialog-icon { width: 44px; height: 44px; font-size: 26px; margin-bottom: 14px; }
  .dialog-title { font-size: 18px; }
  .dialog-actions { flex-direction: column-reverse; }
  .dialog-actions button { width: 100%; }
}

/* ========================================================================
   Toast — 非阻塞轻提示
   ======================================================================== */

.toast-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.toast {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--bronze);
  border-radius: 3px;
  box-shadow: 0 6px 20px rgba(44, 40, 38, 0.18);
  font-family: var(--font-serif);
  font-size: 14.5px;
  color: var(--ink);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.22s, transform 0.22s;
  max-width: 80vw;
}
.toast.toast-show {
  opacity: 1;
  transform: translateY(0);
}

.toast-ok      { border-left-color: var(--bamboo); }
.toast-info    { border-left-color: var(--bronze); }
.toast-warn    { border-left-color: #c8a040; }
.toast-error   { border-left-color: var(--vermilion); }

.toast-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  color: var(--paper);
  font-family: var(--font-brush);
  font-size: 14px;
  line-height: 1;
  font-weight: 700;
  flex-shrink: 0;
}
.toast-ok    .toast-icon { background: var(--bamboo); }
.toast-info  .toast-icon { background: var(--bronze); }
.toast-warn  .toast-icon { background: #c8a040; }
.toast-error .toast-icon { background: var(--vermilion); }

.toast-text {
  letter-spacing: 0.3px;
}

@media (max-width: 480px) {
  .toast-container { top: 16px; }
  .toast { font-size: 13.5px; padding: 10px 16px; }
}

/* ========================================================================
   Round 3 · 笔记 CMS：tag-pill / tag-cloud / admin form / quick-add
   ======================================================================== */

/* 文章详情页：tags 行 */
.note-tags {
  margin-top: 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 标签 pill（可点击跳 tag.html） */
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  font-family: var(--font-kai);
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--ink-soft);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 2px;
  text-decoration: none;
  transition: all 0.2s;
}
.tag-pill:hover {
  color: var(--vermilion);
  border-color: var(--vermilion);
  background: rgba(160, 44, 44, 0.04);
}
.tag-pill-active {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--paper);
}
.tag-pill-active:hover {
  color: var(--paper);
  background: var(--vermilion-d);
}
.tag-pill .tag-count {
  display: inline-block;
  font-family: var(--font-en);
  font-style: italic;
  font-size: 11.5px;
  letter-spacing: 0;
  opacity: 0.75;
  margin-left: 2px;
}

/* tag 云容器（tag.html 顶部） */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 40px;
  padding: 20px 24px;
  background: var(--paper-2);
  border-left: 3px solid var(--bronze);
  border-radius: 2px;
}
.tag-cloud:empty { display: none; }

/* notes-admin 表单的横向 row 布局 */
.post-form .row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.post-form .row .field { margin-bottom: 0; }

@media (max-width: 720px) {
  .post-form .row { flex-direction: column; }
  .post-form .row .field { width: 100% !important; }
}

/* AI/产品/读书 列表页底部的"管理员添加"入口 */
.admin-quick-add {
  text-align: center;
  margin: 40px 0 24px;
  padding-top: 24px;
  border-top: 1px dashed var(--rule-soft);
}
.admin-quick-add a {
  color: var(--vermilion);
}

/* ========================================================================
   暗色模式 — 夜读 · 深墨 + 米黄
   ======================================================================== */

[data-theme="dark"] {
  --paper:      #1f1a16;   /* 深墨底 */
  --paper-2:    #2a2420;   /* 卡片底 */
  --ink:        #e8dcc4;   /* 米黄文字 */
  --ink-soft:   #c8baa0;
  --ink-mute:   #908475;
  --vermilion:  #d76661;   /* 夜读版亮朱砂 */
  --vermilion-d:#b94e49;
  --bronze:     #a08a6a;
  --bamboo:     #8aa07e;
  --rule:       #5a4f47;
  --rule-soft:  #3a322c;
}

/* 暗色下宣纸纹理改细 */
[data-theme="dark"] body {
  background-image:
    radial-gradient(rgba(232, 220, 196, 0.025) 1px, transparent 1px),
    radial-gradient(rgba(232, 220, 196, 0.018) 1px, transparent 1px);
}

/* 朱砂方章 — 暗色下保持饱和度 */
[data-theme="dark"] .seal,
[data-theme="dark"] .footer-seal {
  background: var(--vermilion);
  color: #f4ecd8;
  box-shadow:
    inset 0 0 0 2px var(--vermilion-d),
    inset 0 0 0 4px var(--vermilion),
    0 2px 0 rgba(0, 0, 0, 0.25);
}

/* 表单输入框暗色 */
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  color-scheme: dark;
}

/* 代码块在暗色下统一 */
[data-theme="dark"] .markdown-body pre,
[data-theme="dark"] article.post pre {
  background: #14110e;
  color: #e8dcc4;
  border: 1px solid var(--rule);
}

/* 暗色下编辑器预览背景调淡 */
[data-theme="dark"] .editor-preview {
  background: #181513;
}
[data-theme="dark"] .editor-split textarea {
  background: var(--paper);
  color: var(--ink);
}

/* OG 卡片 / 头像 / 点赞 / 搜索 modal 等 Round 5 元素的特殊处理 */
[data-theme="dark"] .modal-overlay {
  background: rgba(0, 0, 0, 0.7);
}

/* 主题切换按钮 */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  margin-left: 10px;
  transition: all 0.2s;
  padding: 0;
}
.theme-toggle:hover {
  border-color: var(--vermilion);
  color: var(--vermilion);
  transform: rotate(20deg);
}

/* ========================================================================
   头像（Gravatar）
   ======================================================================== */

.avatar {
  display: inline-block;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 6px;
  background: var(--paper-2);
  border: 1px solid var(--rule-soft);
  object-fit: cover;
}
.avatar-sm { width: 22px; height: 22px; }
.avatar-lg { width: 64px; height: 64px; }

/* 账户页头像上传 */
.avatar-edit {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.avatar-edit .avatar-lg {
  border: 2px solid var(--rule);
  margin-right: 0;
}
.avatar-edit-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
  min-width: 0;
}
.avatar-edit-actions button {
  margin-top: 0;
}

/* 头像编辑在极小屏（< 380px）改纵向 */
@media (max-width: 380px) {
  .avatar-edit {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

/* ========================================================================
   搜索 modal
   ======================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(44, 40, 38, 0.42);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;       /* 真正居中 */
  justify-content: center;
  padding: 20px;
}
.modal-overlay[hidden] { display: none; }

[data-theme="dark"] .modal-overlay {
  background: rgba(0, 0, 0, 0.65);
}

.search-modal {
  width: 100%;
  max-width: 560px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--vermilion);
  border-radius: 4px;
  padding: 24px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 2px;
  outline: none;
}
.search-input:focus {
  border-color: var(--vermilion);
  box-shadow: 0 0 0 2px rgba(160, 44, 44, 0.1);
}
.search-tabs {
  display: flex;
  gap: 4px;
  margin: 12px 0 8px;
}
.search-tab {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  padding: 5px 16px;
  font-family: var(--font-kai);
  font-size: 13px;
  letter-spacing: 3px;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.15s;
}
.search-tab:hover {
  border-color: var(--vermilion);
  color: var(--vermilion);
}
.search-tab.active {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--paper);
}

.search-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-kai);
  font-size: 12px;
  color: var(--ink-mute);
  letter-spacing: 2px;
  margin: 10px 2px;
}
.search-results {
  flex: 1;
  overflow-y: auto;
  margin-top: 8px;
}
.search-result {
  padding: 12px 14px;
  border-radius: 2px;
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--rule-soft);
}
.search-result:hover,
.search-result.active {
  background: var(--paper-2);
}
.search-result .sr-title {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink);
  font-weight: 500;
}
.search-result .sr-meta {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 12px;
  color: var(--ink-mute);
  margin-top: 2px;
}
.search-result .sr-excerpt {
  color: var(--ink-soft);
  font-size: 13px;
  margin-top: 4px;
  line-height: 1.55;
}
.search-empty {
  text-align: center;
  padding: 40px 0;
  color: var(--ink-mute);
  font-family: var(--font-kai);
  letter-spacing: 2px;
}

/* 顶部"搜"按钮 */
.search-trigger {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  height: 32px;
  padding: 0 12px;
  border-radius: 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-kai);
  font-size: 13px;
  letter-spacing: 2px;
  margin-left: 6px;
  transition: all 0.2s;
}
.search-trigger:hover {
  border-color: var(--vermilion);
  color: var(--vermilion);
}
.search-trigger kbd {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 11px;
  background: var(--paper-2);
  padding: 1px 6px;
  border-radius: 2px;
  border: 1px solid var(--rule-soft);
  margin-left: 4px;
  letter-spacing: 0;
}

/* ========================================================================
   点赞按钮
   ======================================================================== */

.like-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 24px 0;
  padding: 12px 0;
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
  justify-content: center;
}
.like-btn {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  padding: 8px 20px;
  border-radius: 24px;
  cursor: pointer;
  font-family: var(--font-kai);
  font-size: 14px;
  letter-spacing: 2px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}
.like-btn:hover {
  border-color: var(--vermilion);
  color: var(--vermilion);
}
.like-btn.liked {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--paper);
}
.like-btn .heart {
  font-size: 16px;
  line-height: 1;
}
.like-btn .like-count {
  font-family: var(--font-en);
  font-style: italic;
}

/* 评论小点赞按钮 */
.comment-like {
  background: transparent;
  border: none;
  color: var(--ink-mute);
  padding: 0 4px;
  cursor: pointer;
  font-family: var(--font-kai);
  font-size: 12px;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
}
.comment-like:hover { color: var(--vermilion); }
.comment-like.liked { color: var(--vermilion); }

/* 撰写台 form 顶部 breadcrumb（"正在新建" / "正在修订：xxx"） */
.form-breadcrumb {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 24px;
  margin: 0 0 18px;
  background: var(--paper-2);
  border-left: 3px solid var(--bronze);
  border-radius: 2px;
  font-family: var(--font-kai);
  font-size: 15px;
  letter-spacing: 2px;
  flex-wrap: wrap;
}
.form-breadcrumb-label {
  color: var(--ink-mute);
  font-size: 13px;
  letter-spacing: 3px;
  flex-shrink: 0;
}
.form-breadcrumb-target {
  color: var(--ink);
  font-family: var(--font-serif);
  letter-spacing: 1px;
  font-size: 16px;
  font-weight: 500;
  word-break: break-all;
}
/* 编辑模式时换朱砂强调 */
.form-breadcrumb-edit {
  border-left-color: var(--vermilion);
  background: rgba(160, 44, 44, 0.04);
}
.form-breadcrumb-edit .form-breadcrumb-label {
  color: var(--vermilion);
}


/* --- 响应式调整 ---------------------------------------------------------- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap, .wrap-wide { padding: 0 22px; }
  .hero-motto { font-size: 40px; letter-spacing: 4px; }
  .page-title { font-size: 28px; letter-spacing: 5px; }
  article.post h1 { font-size: 28px; }
  .site-header-inner { flex-direction: column; align-items: flex-start; }
  nav.site-nav { gap: 20px; }
  .section-card { padding: 32px 24px; }
  .section-card h2 { font-size: 26px; }

  .community-toolbar { flex-direction: column; align-items: stretch; }
  .community-toolbar .actions { justify-content: flex-end; }
  .auth-form { padding: 28px 22px; }
  .nav-auth {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
    width: 100%;
  }
}

/* ========================================================================
   移动端补丁 — Round 5 新增元素的响应式 + 整体细化
   ======================================================================== */

/* 平板 / 大手机（< 760px） */
@media (max-width: 760px) {
  .site-header { padding: 32px 0 18px; margin-bottom: 36px; }

  /* nav 允许换行 + 整体更紧凑 */
  nav.site-nav {
    flex-wrap: wrap;
    gap: 14px 18px;
    font-size: 15px;
    width: 100%;
    margin-top: 4px;
  }
  nav.site-nav a.active::after { display: none; }

  /* nav-auth 区里多个按钮自动换行 */
  .nav-auth {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 14px;
    border-left: none;
    padding-left: 0;
    margin-left: 0;
  }

  /* 搜索按钮在窄屏隐藏 kbd 提示，更紧凑 */
  .search-trigger {
    padding: 0 10px;
    height: 28px;
    font-size: 12px;
  }
  .search-trigger kbd { display: none; }

  /* 主题切换按钮稍小 */
  .theme-toggle { width: 28px; height: 28px; font-size: 13px; margin-left: 2px; }

  /* 顶部用户名链接稍小 */
  a.nav-user { font-size: 14px; }

  /* hero 留白收一点 */
  .hero { padding: 16px 0 48px; }
  .hero-sub { font-size: 17px; }

  /* divider 文字不溢出 */
  .divider::before, .divider::after { max-width: 100px; }

  /* 编辑器 textarea 字号 ≥16px 防 iOS 自动 zoom */
  .editor-split textarea,
  .auth-form input,
  .auth-form textarea,
  .post-form input,
  .post-form textarea,
  .comment-form textarea,
  .comment-edit textarea,
  .search-input {
    font-size: 16px;
  }
}

/* 手机（< 640px）— 继承上面 760px 的所有规则，再叠加 */
@media (max-width: 640px) {
  nav.site-nav { gap: 12px 14px; font-size: 14px; }

  /* 撰写台列表卡片纵向排列 */
  .review-card { padding: 18px 16px; }
  .review-card-head { flex-direction: column; align-items: flex-start; gap: 6px; }
  .review-meta { font-size: 12px; }
  .review-actions { gap: 8px; }

  /* 帐户信息行改纵向 */
  .info-row { flex-direction: column; padding: 12px 0; align-items: flex-start; }
  .info-k { width: auto; margin-bottom: 4px; }
  .info-v { font-size: 15px; }

  /* admin 审核台 tab 紧凑 */
  .admin-tabs { flex-wrap: wrap; }
  .admin-tab { padding: 10px 14px; font-size: 14px; letter-spacing: 2px; }
  .admin-panel { gap: 14px; }

  /* form breadcrumb 紧凑 */
  .form-breadcrumb { padding: 12px 16px; flex-direction: column; align-items: flex-start; gap: 4px; }
  .form-breadcrumb-target { font-size: 15px; }

  /* 笔记列表字号 */
  .post-list > li { padding: 22px 0; }
  .post-list h3 { font-size: 19px; }
  .post-list .excerpt { font-size: 14px; }

  /* 点赞按钮 */
  .like-btn { padding: 8px 18px; font-size: 13px; letter-spacing: 1px; }
  .like-bar { margin: 20px 0; }

  /* 头像 */
  .avatar { width: 24px; height: 24px; }
  .avatar-sm { width: 20px; height: 20px; }
  .avatar-lg { width: 40px; height: 40px; }

  /* 搜索 modal 占满屏 */
  .modal-overlay { padding-top: 8vh; padding-left: 12px; padding-right: 12px; }
  .search-modal { padding: 18px; max-height: 84vh; }
  .search-results { max-height: none; }

  /* 评论操作按钮排列 */
  .comment-actions { gap: 10px; }

  /* 文章/笔记正文标题 */
  article.post h2 { font-size: 21px; letter-spacing: 2px; margin: 40px 0 14px; }
  article.post h3 { font-size: 17px; }
  .markdown-body h1 { font-size: 22px; }
  .markdown-body h2 { font-size: 19px; }

  /* footer 紧凑 */
  .site-footer { padding: 24px 0 36px; font-size: 12px; }
  .footer-seal { width: 28px; height: 28px; font-size: 16px; line-height: 28px; }
  .icp { font-size: 11px; }

  /* 404 页 */
  .not-found { padding: 64px 16px 80px; }
  .not-found-num { font-size: 64px; letter-spacing: 10px; }
  .not-found-title { font-size: 26px; letter-spacing: 5px; }

  /* hero motto 进一步缩 */
  .hero-motto { font-size: 36px; }

  /* community 工具栏：分类按钮也允许换行 */
  .filters { flex-wrap: wrap; }

  /* tag 云在小屏 */
  .tag-cloud { padding: 16px; gap: 8px; }
  .tag-pill { font-size: 12px; padding: 2px 10px; }
}

/* 极小屏 / iPhone SE（< 380px） */
@media (max-width: 380px) {
  .wrap, .wrap-wide { padding: 0 16px; }
  .brand-name-cn { font-size: 20px; letter-spacing: 2px; }
  .brand-name-en { font-size: 11px; letter-spacing: 1px; }
  .seal { width: 48px; height: 48px; font-size: 26px; }
  .hero-motto { font-size: 30px; letter-spacing: 2px; }
  .page-title { font-size: 24px; letter-spacing: 4px; }
  nav.site-nav { font-size: 13px; gap: 8px 12px; }
  article.post h1 { font-size: 24px; letter-spacing: 1px; }
}

/* 触摸优化：点击区域至少 44x44px（移动端可达性） */
@media (hover: none) and (pointer: coarse) {
  .filter-btn, .btn-mini, .comment-action, .theme-toggle {
    min-height: 36px;
  }
  .comment-like { min-height: 32px; padding: 6px 8px; }
}