:root {
  --jb-primary: #004276;
  --jb-primary-light: #eef4fa;
  --jb-primary-lighter: #f5f8fc;
  --jb-accent: #ff6600;
  --jb-accent-light: #fff0e6;
  --jb-bg: #f7f8fa;
  --jb-surface: #ffffff;
  --jb-border: #e8ecf0;
  --jb-border-light: #f0f2f5;
  --jb-text: #1a1d23;
  --jb-text-secondary: #6b7280;
  --jb-text-tertiary: #9ca3af;
  --jb-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --jb-shadow-hover: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --jb-radius: 10px;
  --jb-w: 1160px;
  --jb-blue: #004276;
  --jb-orange: #ff6600;
  --jb-font: -apple-system, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
}
*,*::before,*::after { margin: 0; padding: 0; box-sizing: border-box; }
html { overflow: -moz-scrollbars-none; -ms-overflow-style: none; scrollbar-width: none; }
html::-webkit-scrollbar { display: none; }
body { font-family: var(--jb-font); background: var(--jb-bg); color: var(--jb-text); font-size: 14px; line-height: 1.7; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
a { color: var(--jb-primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--jb-accent); }
img { max-width: 100%; vertical-align: middle; }

.jb-wrap { width: var(--jb-w); margin: 0 auto; padding: 0 20px; }

/* ── Header ── */
.jb-header {
  background: var(--jb-surface);
  border-bottom: 1px solid var(--jb-border);
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.jb-header-inner { display: flex; align-items: center; height: 52px; gap: 20px; }
.jb-logo {
  display: flex; align-items: center; gap: 8px; color: var(--jb-primary); font-size: 15px; font-weight: 700;
  letter-spacing: -0.02em; white-space: nowrap;
}
.jb-logo svg { width: 22px; height: 22px; }
.jb-logo:hover { color: var(--jb-primary); opacity: 0.8; }
.jb-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.jb-nav-item {
  display: block; padding: 6px 14px; color: var(--jb-text-secondary); font-size: 13px;
  border-radius: 8px; transition: all 0.2s ease;
}
.jb-nav-item:hover, .jb-nav-item.active { background: var(--jb-primary-light); color: var(--jb-primary); }
.jb-nav-item.jb-nav-user { font-weight: 600; color: var(--jb-primary); }
.jb-nav-toggle { display: none; background: none; border: none; color: var(--jb-text-secondary); cursor: pointer; padding: 6px; border-radius: 6px; }
.jb-nav-toggle:hover { background: var(--jb-primary-light); color: var(--jb-primary); }

/* ── Sub Header ── */
.jb-sub-header {
  background: var(--jb-surface);
  border-bottom: 1px solid var(--jb-border-light);
  padding: 10px 0;
}
.jb-sub-header .jb-wrap { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.jb-breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--jb-text-tertiary); }
.jb-breadcrumb a { color: var(--jb-text-secondary); }
.jb-breadcrumb a:hover { color: var(--jb-accent); }
.jb-breadcrumb-sep { color: var(--jb-border); }
.jb-header-actions { display: flex; gap: 8px; align-items: center; }

/* ── Body ── */
.jb-body { padding: 20px 0; min-height: calc(100vh - 200px); }

/* ── Section / Card ── */
.jb-section { margin-bottom: 16px; }
.jb-section-header {
  padding: 10px 16px;
  font-size: 13px; font-weight: 600; color: var(--jb-primary);
  display: flex; align-items: center; gap: 8px;
  border-bottom: 2px solid var(--jb-primary-light);
}

.jb-card {
  background: var(--jb-surface); border-radius: var(--jb-radius);
  box-shadow: var(--jb-shadow); margin-bottom: 14px;
  transition: box-shadow 0.2s ease;
}
.jb-card:hover { box-shadow: var(--jb-shadow-hover); }
.jb-card-h {
  padding: 12px 16px; border-bottom: 1px solid var(--jb-border-light);
  font-size: 13px; font-weight: 600; color: var(--jb-text-secondary);
}
.jb-card-c { padding: 16px; }
.jb-card-c p { margin: 6px 0; color: var(--jb-text-secondary); font-size: 13px; }

/* ── Table ── */
.jb-table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--jb-surface); border-radius: var(--jb-radius); overflow: hidden; }
.jb-table th {
  padding: 10px 14px; background: var(--jb-primary-lighter); color: var(--jb-primary);
  font-size: 11px; font-weight: 600; text-align: left; text-transform: uppercase; letter-spacing: 0.04em;
}
.jb-table td { padding: 12px 14px; border-top: 1px solid var(--jb-border-light); vertical-align: middle; font-size: 13px; }
.jb-table tr:first-child td { border-top: none; }

/* ── Forum List ── */
.jb-forum-row {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; border-bottom: 1px solid var(--jb-border-light);
  transition: background 0.15s ease;
}
.jb-forum-row:last-child { border-bottom: none; }
.jb-forum-row:hover { background: var(--jb-primary-lighter); }
.jb-forum-icon {
  width: 40px; height: 40px; background: var(--jb-primary-light); border-radius: var(--jb-radius);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.jb-forum-icon svg { width: 20px; height: 20px; color: var(--jb-primary); }
.jb-forum-info { flex: 1; min-width: 0; }
.jb-forum-name { font-size: 14px; font-weight: 600; color: var(--jb-text); }
.jb-forum-name:hover { color: var(--jb-accent); }
.jb-forum-desc { font-size: 12px; color: var(--jb-text-tertiary); margin-top: 2px; }
.jb-forum-stats { text-align: center; font-size: 12px; padding: 0 20px; white-space: nowrap; }
.jb-forum-stats .num { font-weight: 600; color: var(--jb-text); font-size: 14px; }
.jb-forum-stats .label { color: var(--jb-text-tertiary); font-size: 10px; display: block; margin-top: 1px; }
.jb-forum-last { width: 180px; font-size: 12px; }
.jb-forum-last a { color: var(--jb-text-secondary); font-size: 12px; }
.jb-forum-last a:hover { color: var(--jb-accent); }
.jb-forum-last .time { color: var(--jb-text-tertiary); font-size: 11px; margin-top: 1px; }

/* ── Thread List ── */
.jb-thread-row {
  display: flex; align-items: center; padding: 11px 16px;
  border-bottom: 1px solid var(--jb-border-light); gap: 12px; transition: background 0.15s ease;
}
.jb-thread-row:last-child { border-bottom: none; }
.jb-thread-row:hover { background: var(--jb-primary-lighter); }
.jb-thread-icon { flex-shrink: 0; display: flex; align-items: center; }
.jb-thread-icon svg { width: 18px; height: 18px; color: var(--jb-text-tertiary); }
.jb-thread-icon.sticky svg { color: var(--jb-accent); }
.jb-thread-icon.digest svg { color: var(--jb-primary); }
.jb-thread-icon.closed svg { color: var(--jb-border); }
.jb-thread-main { flex: 1; min-width: 0; }
.jb-thread-title { font-size: 14px; font-weight: 600; color: var(--jb-text); line-height: 1.5; }
.jb-thread-title:hover { color: var(--jb-accent); }
.jb-thread-meta { font-size: 11px; color: var(--jb-text-tertiary); margin-top: 3px; display: flex; gap: 10px; flex-wrap: wrap; }
.jb-thread-meta a { color: var(--jb-text-tertiary); }
.jb-thread-meta a:hover { color: var(--jb-accent); }
.jb-thread-stats { text-align: center; white-space: nowrap; font-size: 12px; }
.jb-thread-stats .num { font-weight: 600; color: var(--jb-text); }
.jb-thread-stats .label { color: var(--jb-text-tertiary); font-size: 10px; display: block; margin-top: 1px; }
.jb-thread-last { width: 140px; font-size: 11px; color: var(--jb-text-tertiary); }

/* ── Badges ── */
.jb-badge {
  display: inline-flex; align-items: center; gap: 3px;
  padding: 2px 8px; font-size: 10px; font-weight: 600; border-radius: 20px; margin-left: 6px;
}
.jb-badge.sticky { background: var(--jb-accent-light); color: var(--jb-accent); }
.jb-badge.digest { background: var(--jb-primary-light); color: var(--jb-primary); }
.jb-badge.closed { background: #f3f4f6; color: var(--jb-text-tertiary); }

/* ── Post ── */
.jb-post {
  display: flex; gap: 16px; padding: 18px 16px;
  border-bottom: 1px solid var(--jb-border-light); transition: background 0.15s ease;
}
.jb-post:last-child { border-bottom: none; }
.jb-post:hover { background: var(--jb-primary-lighter); }
.jb-post-side { width: 120px; flex-shrink: 0; text-align: center; }
.jb-post-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--jb-primary), #003366);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; margin: 0 auto 8px;
  box-shadow: 0 2px 8px rgba(0,66,118,0.15);
}
.jb-post-author { font-weight: 600; font-size: 13px; color: var(--jb-text); }
.jb-post-title { font-size: 11px; color: var(--jb-text-tertiary); margin-top: 1px; }
.jb-post-main { flex: 1; min-width: 0; }
.jb-post-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.jb-post-floor { font-size: 12px; color: var(--jb-text-tertiary); font-weight: 500; }
.jb-post-time { font-size: 12px; color: var(--jb-text-tertiary); }
.jb-post-content { font-size: 14px; line-height: 1.8; color: var(--jb-text); word-wrap: break-word; }
.jb-post-content h3 { font-size: 16px; margin: 18px 0 10px; color: var(--jb-text); font-weight: 600; }
.jb-post-content p { margin: 8px 0; }
.jb-post-content ul, .jb-post-content ol { margin: 8px 0; padding-left: 22px; }
.jb-post-content li { margin: 3px 0; }
.jb-post-actions { margin-top: 12px; display: flex; gap: 8px; }

/* ── Form ── */
.jb-form { max-width: 420px; margin: 0 auto; padding: 24px 0; }
.jb-form-wide { max-width: 100%; }
.jb-form-group { margin-bottom: 16px; }
.jb-form-label {
  display: block; font-size: 12px; font-weight: 600; color: var(--jb-text-secondary);
  margin-bottom: 5px; letter-spacing: 0.02em;
}
.jb-form-input {
  width: 100%; padding: 10px 12px; border: 1.5px solid var(--jb-border); border-radius: 8px;
  font-size: 14px; color: var(--jb-text); background: var(--jb-surface);
  outline: none; transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.jb-form-input:focus {
  border-color: var(--jb-primary); box-shadow: 0 0 0 3px rgba(0,66,118,0.08);
}
.jb-form-textarea {
  width: 100%; min-height: 180px; padding: 12px; border: 1.5px solid var(--jb-border); border-radius: 8px;
  font-size: 14px; color: var(--jb-text); background: var(--jb-surface);
  outline: none; resize: vertical; font-family: inherit; line-height: 1.7;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.jb-form-textarea:focus {
  border-color: var(--jb-primary); box-shadow: 0 0 0 3px rgba(0,66,118,0.08);
}
.jb-form-select {
  width: 100%; padding: 10px 12px; border: 1.5px solid var(--jb-border); border-radius: 8px;
  font-size: 14px; color: var(--jb-text); background: var(--jb-surface); outline: none;
  transition: border-color 0.2s ease; cursor: pointer;
}
.jb-form-select:focus { border-color: var(--jb-primary); }

/* ── Button ── */
.jb-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 20px; border: none; border-radius: 8px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: all 0.2s ease; text-decoration: none; line-height: 1.4;
}
.jb-btn-primary { background: var(--jb-accent); color: #fff; }
.jb-btn-primary:hover { background: #e55a00; color: #fff; box-shadow: 0 2px 8px rgba(255,102,0,0.25); }
.jb-btn-blue { background: var(--jb-primary); color: #fff; }
.jb-btn-blue:hover { background: #00335a; color: #fff; box-shadow: 0 2px 8px rgba(0,66,118,0.25); }
.jb-btn-outline {
  background: transparent; border: 1.5px solid var(--jb-border); color: var(--jb-text-secondary);
}
.jb-btn-outline:hover { border-color: var(--jb-primary); color: var(--jb-primary); background: var(--jb-primary-lighter); }
.jb-btn-ghost { background: transparent; color: var(--jb-text-secondary); }
.jb-btn-ghost:hover { background: var(--jb-primary-lighter); color: var(--jb-primary); }
.jb-btn-sm { padding: 6px 14px; font-size: 12px; border-radius: 6px; }
.jb-btn-xs { padding: 4px 10px; font-size: 11px; border-radius: 5px; }

/* ── Pagination ── */
.jb-pg {
  display: flex; align-items: center; justify-content: center; gap: 4px; padding: 20px 0;
}
.jb-pg a, .jb-pg strong, .jb-pg span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 32px; height: 32px; padding: 0 10px;
  border-radius: 8px; font-size: 12px; font-weight: 500;
}
.jb-pg strong { background: var(--jb-primary); color: #fff; }
.jb-pg a { color: var(--jb-text-secondary); background: var(--jb-surface); border: 1px solid var(--jb-border); }
.jb-pg a:hover { border-color: var(--jb-primary); color: var(--jb-primary); background: var(--jb-primary-lighter); }
.jb-pg span { color: var(--jb-text-tertiary); }

/* ── Message ── */
.jb-msg {
  padding: 12px 16px; border-radius: 8px; margin-bottom: 14px;
  font-size: 13px; line-height: 1.6;
}
.jb-msg-info { background: var(--jb-primary-lighter); color: var(--jb-primary); }
.jb-msg-error { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.jb-msg-success { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }

/* ── Empty ── */
.jb-empty {
  text-align: center; padding: 50px 20px; color: var(--jb-text-tertiary);
  font-size: 13px; line-height: 2;
}
.jb-empty svg { width: 40px; height: 40px; opacity: 0.3; margin-bottom: 10px; }

/* ── Footer ── */
.jb-footer {
  background: var(--jb-primary); color: rgba(255,255,255,0.7); padding: 24px 0; margin-top: 30px;
  font-size: 12px; line-height: 1.8;
}
.jb-footer-inner { text-align: center; }
.jb-footer a { color: rgba(255,255,255,0.8); }
.jb-footer a:hover { color: #fff; }
.jb-footer-meta { margin-top: 4px; font-size: 11px; opacity: 0.6; }
.jb-footer-sep { padding: 0 8px; opacity: 0.3; }

/* ── Quick Post ── */
.jb-quick-post {
  background: var(--jb-surface); border-radius: var(--jb-radius);
  box-shadow: var(--jb-shadow); padding: 16px;
}
.jb-quick-post textarea {
  width: 100%; min-height: 100px; border: 1.5px solid var(--jb-border);
  border-radius: 8px; padding: 10px 12px; font-size: 14px; font-family: inherit;
  outline: none; resize: vertical; transition: border-color 0.2s ease;
}
.jb-quick-post textarea:focus { border-color: var(--jb-primary); }
.jb-quick-post-actions { margin-top: 10px; display: flex; align-items: center; gap: 10px; }

/* ── Admin ── */
.jb-admin-layout { display: flex; gap: 20px; align-items: flex-start; }
.jb-admin-sidebar {
  width: 200px; flex-shrink: 0; background: var(--jb-surface);
  border-radius: var(--jb-radius); box-shadow: var(--jb-shadow); overflow: hidden;
}
.jb-admin-sidebar-h {
  padding: 14px 16px; font-size: 13px; font-weight: 700; color: var(--jb-primary);
  border-bottom: 1px solid var(--jb-border-light);
}
.jb-admin-sidebar-nav { display: flex; flex-direction: column; }
.jb-admin-sidebar-nav a {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; font-size: 12px; color: var(--jb-text-secondary);
  transition: all 0.15s ease; border-left: 3px solid transparent;
}
.jb-admin-sidebar-nav a:hover { background: var(--jb-primary-lighter); color: var(--jb-primary); }
.jb-admin-sidebar-nav a.active { background: var(--jb-primary-lighter); color: var(--jb-primary); border-left-color: var(--jb-accent); font-weight: 600; }
.jb-admin-sidebar-nav a svg { width: 16px; height: 16px; flex-shrink: 0; }
.jb-admin-main { flex: 1; min-width: 0; }
.jb-admin-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.jb-admin-header h2 { font-size: 16px; font-weight: 700; color: var(--jb-text); }

.jb-admin-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.jb-admin-stat {
  background: var(--jb-surface); border-radius: var(--jb-radius); padding: 16px;
  box-shadow: var(--jb-shadow); text-align: center;
}
.jb-admin-stat-num { font-size: 24px; font-weight: 700; color: var(--jb-primary); }
.jb-admin-stat-label { font-size: 11px; color: var(--jb-text-tertiary); margin-top: 2px; }

.jb-admin-table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--jb-surface); border-radius: var(--jb-radius); overflow: hidden; }
.jb-admin-table th {
  padding: 10px 12px; background: var(--jb-primary-lighter); color: var(--jb-primary);
  font-size: 11px; font-weight: 600; text-align: left; text-transform: uppercase; letter-spacing: 0.03em;
}
.jb-admin-table td { padding: 10px 12px; border-top: 1px solid var(--jb-border-light); font-size: 12px; }
.jb-admin-table tr:first-child td { border-top: none; }
.jb-admin-table tr:hover td { background: var(--jb-primary-lighter); }

/* ── Space (个人空间) ── */
.jb-space-wrap { display: flex; gap: 20px; align-items: flex-start; }
.jb-space-side { width: 240px; flex-shrink: 0; }
.jb-space-main { flex: 1; min-width: 0; }
.jb-space-avatar-img {
  width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 700; color: #fff;
  box-shadow: 0 4px 12px rgba(0,66,118,0.15);
}
.jb-space-name { font-size: 18px; font-weight: 700; color: var(--jb-text); }
.jb-space-group { margin: 6px 0; }
.jb-space-group-badge { display: inline-block; padding: 2px 12px; border-radius: 20px; font-size: 11px; font-weight: 600; color: #fff; }
.jb-space-bio { font-size: 12px; color: var(--jb-text-secondary); margin: 8px 0; line-height: 1.6; }
.jb-space-meta { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 8px 0; }
.jb-space-meta-item { display: inline-flex; align-items: center; gap: 3px; font-size: 11px; color: var(--jb-text-tertiary); }
.jb-space-tabs { display: flex; gap: 0; border-bottom: 2px solid var(--jb-border-light); margin-bottom: 14px; }
.jb-space-tab {
  padding: 8px 18px; font-size: 12px; font-weight: 500; color: var(--jb-text-secondary);
  cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all 0.15s ease;
}
.jb-space-tab:hover { color: var(--jb-primary); }
.jb-space-tab.active { color: var(--jb-primary); border-bottom-color: var(--jb-accent); font-weight: 600; }

/* ── Changelog ── */
.jb-cl-header {
  text-align: center; padding: 40px 20px 30px;
}
.jb-cl-header h1 { font-size: 26px; font-weight: 800; color: var(--jb-text); letter-spacing: -0.03em; }
.jb-cl-header p { color: var(--jb-text-secondary); font-size: 13px; margin-top: 6px; }
.jb-cl-timeline { position: relative; padding-left: 28px; }
.jb-cl-timeline::before {
  content: ''; position: absolute; left: 10px; top: 4px; bottom: 4px;
  width: 2px; background: var(--jb-border); border-radius: 2px;
}
.jb-cl-item { position: relative; padding: 0 0 24px; }
.jb-cl-item::before {
  content: ''; position: absolute; left: -24px; top: 8px;
  width: 10px; height: 10px; border-radius: 50%; background: var(--jb-surface);
  border: 2px solid var(--jb-primary);
}
.jb-cl-version {
  display: inline-block; padding: 2px 10px; border-radius: 6px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.03em;
  background: var(--jb-primary-light); color: var(--jb-primary); margin-bottom: 6px;
}
.jb-cl-entry { font-size: 13px; color: var(--jb-text-secondary); padding: 4px 0; }
.jb-cl-date { font-size: 11px; color: var(--jb-text-tertiary); }

/* ── Responsive ── */
@media (max-width: 1160px) {
  .jb-wrap { width: 100%; padding: 0 16px; }
}
@media (max-width: 768px) {
  /* ── Header ── */
  .jb-header-inner { height: 48px; gap: 10px; }
  .jb-logo { font-size: 14px; }
  .jb-nav { display: none; flex-direction: column; position: absolute; top: 48px; left: 0; right: 0; background: var(--jb-surface); padding: 8px; gap: 2px; border-bottom: 1px solid var(--jb-border); box-shadow: 0 8px 16px rgba(0,0,0,0.06); }
  .jb-nav.open { display: flex; }
  .jb-nav-toggle { display: block; }
  .jb-nav-item { padding: 10px 14px; border-radius: 8px; }

  /* ── Sub Header ── */
  .jb-sub-header .jb-wrap { flex-direction: column; gap: 6px; align-items: flex-start; }
  .jb-breadcrumb { font-size: 11px; flex-wrap: wrap; }
  .jb-breadcrumb a, .jb-breadcrumb span { max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .jb-header-actions { width: 100%; justify-content: flex-end; }

  /* ── Body ── */
  .jb-body { padding: 14px 0; }

  /* ── Section / Card ── */
  .jb-section-header { font-size: 12px; padding: 8px 12px; }
  .jb-section-header svg { width: 12px; height: 12px; }

  /* ── Table (forum index) ── */
  .jb-table th:nth-child(2),
  .jb-table th:nth-child(3),
  .jb-table th:nth-child(4),
  .jb-table td:nth-child(2),
  .jb-table td:nth-child(3),
  .jb-table td:nth-child(4) { display: none; }
  .jb-table th:first-child { width: 100% !important; }
  .jb-table td:first-child { width: 100% !important; }
  .jb-table td:first-child .jb-forum-desc { font-size: 11px; }
  .jb-table td:first-child .jb-forum-icon { width: 36px; height: 36px; }
  .jb-table td:first-child .jb-forum-icon svg { width: 18px; height: 18px; }

  /* ── Forum/Thread list ── */
  .jb-forum-last { display: none; }
  .jb-forum-stats { display: none; }
  .jb-thread-last { display: none; }
  .jb-thread-stats { display: none; }
  .jb-thread-row { padding: 10px 12px; gap: 8px; }
  .jb-thread-icon svg { width: 15px; height: 15px; }
  .jb-thread-title { font-size: 13px; }
  .jb-thread-meta { font-size: 10px; gap: 6px; }
  .jb-thread-meta span { white-space: nowrap; }
  .jb-forum-row { padding: 12px; gap: 10px; }

  /* ── Post (thread page) ── */
  .jb-post { padding: 14px 12px; gap: 10px; }
  .jb-post-side { width: 44px; }
  .jb-post-avatar { width: 28px; height: 28px; font-size: 11px; margin-bottom: 4px; }
  .jb-post-author { font-size: 11px; }
  .jb-post-title { display: none; }
  .jb-post-header { flex-direction: column; align-items: flex-start; gap: 2px; margin-bottom: 6px; }
  .jb-post-content { font-size: 13px; }
  .jb-post-time { font-size: 11px; }

  /* ── Quick Post ── */
  .jb-quick-post { padding: 12px; }
  .jb-quick-post textarea { min-height: 80px; font-size: 13px; padding: 8px 10px; }
  .jb-quick-post-actions { flex-direction: column; align-items: stretch; gap: 6px; }
  .jb-quick-post-actions .jb-btn { width: 100%; justify-content: center; }
  .jb-quick-post-actions span { font-size: 10px; text-align: center; }

  /* ── Pagination ── */
  .jb-pg { gap: 3px; padding: 14px 0; }
  .jb-pg a, .jb-pg strong, .jb-pg span { min-width: 28px; height: 28px; padding: 0 6px; font-size: 11px; }

  /* ── Form ── */
  .jb-form { padding: 16px 0; }
  .jb-form-label { font-size: 11px; }
  .jb-form-input, .jb-form-textarea, .jb-form-select { font-size: 13px; padding: 8px 10px; }
  .jb-form-textarea { min-height: 120px; }

  /* ── Button ── */
  .jb-btn { padding: 7px 16px; font-size: 12px; }
  .jb-btn-sm { padding: 5px 12px; font-size: 11px; }
  .jb-btn-xs { padding: 4px 8px; font-size: 10px; }

  /* ── Space (profile) ── */
  .jb-space-wrap { flex-direction: column; }
  .jb-space-side { width: 100%; }
  .jb-space-avatar-img { width: 56px; height: 56px; font-size: 22px; }
  .jb-space-name { font-size: 16px; }
  .jb-space-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; gap: 0; }
  .jb-space-tab { padding: 8px 14px; font-size: 11px; white-space: nowrap; }

  /* ── Admin ── */
  .jb-admin-layout { flex-direction: column; }
  .jb-admin-sidebar { width: 100%; }
  .jb-admin-sidebar-nav { flex-direction: row; flex-wrap: wrap; padding: 8px; gap: 4px; }
  .jb-admin-sidebar-nav a { border-left: none; border-bottom: 2px solid transparent; padding: 8px 12px; font-size: 11px; border-radius: 6px; }
  .jb-admin-sidebar-nav a.active { border-bottom-color: var(--jb-accent); }
  .jb-admin-grid { grid-template-columns: repeat(2, 1fr); }
  .jb-admin-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .jb-admin-header h2 { font-size: 14px; }

  /* ── Admin table ── */
  .jb-admin-table th,
  .jb-admin-table td { padding: 7px 8px; font-size: 11px; }
  .jb-admin-table th:nth-child(n+4),
  .jb-admin-table td:nth-child(n+4) { display: none; }

  /* ── Appstore config table ── */
  .app-cfg-table th:nth-child(n+4),
  .app-cfg-table td:nth-child(n+4) { display: none; }
  .app-cfg-table input,
  .app-cfg-table select { width: 100% !important; box-sizing: border-box !important; }
  .app-cfg-table td[style] { width: auto !important; }

  /* ── Changelog ── */
  .jb-cl-timeline { padding-left: 24px; }
  .jb-cl-item::before { left: -20px; width: 8px; height: 8px; }
  .jb-cl-header { padding: 24px 16px 20px; }
  .jb-cl-header h1 { font-size: 20px; }
  .jb-cl-header p { font-size: 12px; }

  /* ── Help page ── */
  .jb-help-grid { grid-template-columns: 1fr; }
  .jb-help-side { position: static; }
  .jb-help-side-nav { display: flex; flex-wrap: wrap; gap: 4px; padding: 8px; }
  .jb-help-side-nav a { border-left: none; border-bottom: 2px solid transparent; padding: 6px 12px; font-size: 12px; border-radius: 6px; }
  .jb-help-side-nav a.active { border-bottom-color: var(--jb-accent); }

  /* ── Home page ── */
  .jb-home-hero h1 { font-size: 24px; }
  .jb-home-hero p { font-size: 13px; }
  .jb-home-hero { padding: 36px 0 32px; }
  .jb-home-tabs { top: 48px; }
  .jb-home-tabs-inner { font-size: 12px; }

  /* ── Announcement ── */
  .jb-announcement-bar { font-size: 11px; }

  /* ── Footer ── */
  .jb-footer { padding: 18px 0; font-size: 11px; }

  /* ── Rating ── */
  .jb-rating-stars { gap: 1px; }
  .jb-rating-star { width: 16px; height: 16px; }
  .jb-rating-info { font-size: 10px; }
  .jb-thread-rating { font-size: 11px; }

  /* ── Card ── */
  .jb-card-h { padding: 10px 12px; font-size: 12px; }
  .jb-card-c { padding: 12px; }
  .jb-card-c p { font-size: 12px; }

  /* ── Message ── */
  .jb-msg { padding: 10px 12px; font-size: 12px; }

  /* ── Empty ── */
  .jb-empty { padding: 30px 16px !important; font-size: 12px !important; }
  .jb-empty svg { width: 32px !important; height: 32px !important; }

  /* ── Changelog (outside .jb-wrap) ── */
  .jb-card[style*="max-width:900px"] { margin-left: 16px !important; margin-right: 16px !important; }
  div[style*="max-width:900px"][style*="flex"] { padding: 0 16px !important; box-sizing: border-box !important; }
  div[style*="max-width:900px"][style*="flex"] > div[style*="width:260px"] { width: 100% !important; }

  /* ── Badge ── */
  .jb-badge { font-size: 9px; padding: 1px 6px; }
}
@media (max-width: 480px) {
  /* ── Base ── */
  body { font-size: 13px; }

  /* ── Header ── */
  .jb-logo { font-size: 13px; gap: 5px; }
  .jb-logo svg { width: 18px; height: 18px; }
  .jb-nav-item { padding: 8px 12px; font-size: 12px; }

  /* ── Card ── */
  .jb-card-c { padding: 10px; }
  .jb-card-h { padding: 8px 10px; font-size: 11px; }

  /* ── List Rows ── */
  .jb-forum-row { padding: 10px; gap: 8px; }
  .jb-forum-icon { width: 34px; height: 34px; }
  .jb-forum-icon svg { width: 16px; height: 16px; }
  .jb-forum-name { font-size: 13px; }
  .jb-forum-desc { font-size: 11px; }

  .jb-thread-row { padding: 8px 10px; gap: 6px; }
  .jb-thread-icon { display: none; }
  .jb-thread-title { font-size: 12px; }
  .jb-thread-meta { font-size: 10px; gap: 4px; }
  .jb-thread-meta span:not(:first-child) { display: none; }

  /* ── Post ── */
  .jb-post { flex-direction: column; padding: 12px 10px; gap: 6px; }
  .jb-post-side { width: 100%; display: flex; align-items: center; gap: 8px; text-align: left; }
  .jb-post-avatar { width: 24px; height: 24px; font-size: 10px; margin: 0; }
  .jb-post-author { font-size: 12px; }
  .jb-post-header { flex-direction: row; align-items: center; justify-content: space-between; }
  .jb-post-floor { font-size: 11px; }
  .jb-post-time { font-size: 10px; }
  .jb-post-content { font-size: 13px; }

  /* ── Quick Post ── */
  .jb-quick-post { padding: 10px; }
  .jb-quick-post textarea { min-height: 72px; font-size: 13px; }

  /* ── Pagination ── */
  .jb-pg { gap: 2px; padding: 12px 0; }
  .jb-pg a, .jb-pg strong, .jb-pg span { min-width: 26px; height: 26px; padding: 0 5px; font-size: 10px; }

  /* ── Form ── */
  .jb-form { padding: 12px 0; }
  .jb-form-input, .jb-form-textarea, .jb-form-select { font-size: 14px; padding: 10px 12px; }
  .jb-btn { width: 100%; justify-content: center; }
  .jb-btn-sm { width: auto; }

  /* ── Table ── */
  .jb-table th,
  .jb-table td { padding: 7px 8px; font-size: 11px; }
  .jb-table td:first-child .jb-forum-icon { width: 30px; height: 30px; }
  .jb-table td:first-child .jb-forum-icon svg { width: 14px; height: 14px; }

  /* ── Section ── */
  .jb-section { margin-bottom: 10px; }
  .jb-section-header { padding: 6px 10px; font-size: 11px; }

  /* ── Sub Header ── */
  .jb-sub-header { padding: 6px 0; }
  .jb-breadcrumb { font-size: 10px; }

  /* ── Space ── */
  .jb-space-avatar-img { width: 48px; height: 48px; font-size: 18px; }
  .jb-space-name { font-size: 15px; }
  .jb-space-tab { padding: 6px 10px; font-size: 11px; }
  .jb-space-bio { font-size: 11px; }

  /* ── Admin ── */
  .jb-admin-stat-num { font-size: 20px; }
  .jb-admin-stat { padding: 12px; }
  .jb-admin-table th,
  .jb-admin-table td { padding: 5px 6px; font-size: 10px; }
  .jb-admin-table th:nth-child(n+3),
  .jb-admin-table td:nth-child(n+3) { display: none; }

  /* ── Appstore config table (480px) ── */
  .app-cfg-table th:nth-child(n+3),
  .app-cfg-table td:nth-child(n+3) { display: none; }
  .app-cfg-table th,
  .app-cfg-table td { padding: 5px 6px; font-size: 10px; }

  /* ── Changelog ── */
  .jb-cl-header h1 { font-size: 18px; }
  .jb-cl-timeline { padding-left: 20px; }
  .jb-cl-item::before { left: -16px; width: 6px; height: 6px; }
  .jb-cl-version { font-size: 10px; padding: 1px 8px; }
  .jb-cl-entry { font-size: 12px; }

  /* ── Help page ── */
  .jb-help-card-q { padding: 10px 12px; font-size: 13px; }
  .jb-help-card-a { font-size: 12px; padding: 0 12px 10px; }

  /* ── Home page ── */
  .jb-home-hero { padding: 28px 0 24px; }
  .jb-home-hero h1 { font-size: 20px; }
  .jb-home-hero p { font-size: 12px; }
  .jb-home-hero-icon { width: 48px; height: 48px; }
  .jb-home-hero-icon svg { width: 24px; height: 24px; }

  /* ── Footer ── */
  .jb-footer { padding: 14px 0; font-size: 10px; }

  /* ── Announcement ── */
  .jb-announcement-bar { font-size: 10px; padding: 4px 0; }

  /* ── Rating ── */
  .jb-rating-star { width: 14px; height: 14px; }

  /* ── Empty ── */
  .jb-empty { padding: 24px 12px !important; font-size: 11px !important; }
  .jb-empty svg { width: 28px !important; height: 28px !important; }

  /* ── Card hover ── */
  .jb-card:hover { box-shadow: var(--jb-shadow); }
}

/* ===== 应用商店 ===== */
.jb-btn-xs { padding: 4px 10px; font-size: 11px; border-radius: 20px; font-weight: 600; }
.jb-btn-blue { background: var(--jb-blue); color: #fff; border: none; }
.jb-btn-blue:hover { opacity: 0.9; }
.jb-btn-ghost { background: transparent; color: var(--jb-text-secondary); border: 1px solid var(--jb-border); }
.jb-btn-ghost:hover { background: #fef2f2; color: #ef4444; border-color: #fecaca; }
.jb-form-input { border: 1.5px solid var(--jb-border); border-radius: 6px; font-size: 13px; padding: 8px 12px; font-family: inherit; transition: border-color 0.2s; }
.jb-form-input:focus { outline: none; border-color: var(--jb-primary); }
.jb-form-textarea { border: 1.5px solid var(--jb-border); border-radius: 6px; font-size: 13px; padding: 8px 12px; width: 100%; font-family: inherit; box-sizing: border-box; transition: border-color 0.2s; }
.jb-form-textarea:focus { outline: none; border-color: var(--jb-primary); }
.jb-empty { text-align: center; color: var(--jb-text-tertiary); font-size: 13px; }

/* ===== 公告栏 ===== */
.jb-announcement-bar {
  background: linear-gradient(135deg, var(--jb-primary) 0%, #0f3460 100%);
  color: #fff; font-size: 12px; padding: 6px 0;
  display: flex; align-items: center;
}
.jb-announcement-scroll {
  display: flex; gap: 24px; overflow: hidden; white-space: nowrap;
  animation: jb-announce-scroll 30s linear infinite;
  margin-left: 8px;
}
.jb-announcement-scroll:hover { animation-play-state: paused; }
@keyframes jb-announce-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.jb-announcement-item { display: inline-flex; align-items: center; gap: 4px; }
.jb-announcement-item strong { color: var(--jb-accent); }

/* ===== 友情链接 ===== */
.jb-footer-links { background: var(--jb-surface); border-top: 1px solid var(--jb-border); padding: 12px 0; }
.jb-footer-links-h { font-size: 11px; font-weight: 600; color: var(--jb-text-tertiary); margin-bottom: 6px; }
.jb-footer-links-list { display: flex; flex-wrap: wrap; gap: 6px; }
.jb-footer-links-list a {
  font-size: 11px; color: var(--jb-text-secondary); padding: 2px 10px;
  background: var(--jb-primary-lighter); border-radius: 20px; transition: all 0.2s;
}
.jb-footer-links-list a:hover { background: var(--jb-primary-light); color: var(--jb-primary); }

/* ===== 在线列表 ===== */
.jb-footer-online { background: var(--jb-primary-lighter); padding: 6px 0; font-size: 11px; color: var(--jb-text-secondary); border-top: 1px solid var(--jb-border-light); }
.jb-footer-online .jb-wrap { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.jb-footer-online-sep { color: var(--jb-border); margin: 0 2px; }

/* ===== 帮助页 ===== */
.jb-help-grid { display: grid; grid-template-columns: 240px 1fr; gap: 20px; margin-top: 20px; }
.jb-help-side { position: sticky; top: 108px; align-self: start; }
.jb-help-side-nav { background: var(--jb-surface); border-radius: var(--jb-radius); box-shadow: var(--jb-shadow); overflow: hidden; }
.jb-help-side-nav a {
  display: block; padding: 10px 14px; font-size: 13px; color: var(--jb-text-secondary);
  border-left: 2px solid transparent; transition: all 0.15s;
}
.jb-help-side-nav a:hover { color: var(--jb-primary); background: var(--jb-primary-lighter); }
.jb-help-side-nav a.active { color: var(--jb-primary); font-weight: 600; border-left-color: var(--jb-accent); background: var(--jb-primary-lighter); }
.jb-help-card { background: var(--jb-surface); border-radius: var(--jb-radius); box-shadow: var(--jb-shadow); margin-bottom: 12px; }
.jb-help-card-q { padding: 14px 16px; font-size: 14px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--jb-text); user-select: none; }
.jb-help-card-q:hover { color: var(--jb-primary); }
.jb-help-card-q svg { width: 14px; height: 14px; transition: transform 0.2s; color: var(--jb-text-tertiary); }
.jb-help-card-q.open svg { transform: rotate(180deg); }
.jb-help-card-a { padding: 0 16px 14px; font-size: 13px; color: var(--jb-text-secondary); line-height: 1.8; display: none; }
.jb-help-card-q.open + .jb-help-card-a { display: block; }
.jb-help-cat-title { font-size: 16px; font-weight: 700; margin: 24px 0 12px; padding-bottom: 8px; border-bottom: 2px solid var(--jb-primary-light); color: var(--jb-text); }

/* ===== 签到按钮 ===== */
.jb-checkin-badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.25s; border: none; }
.jb-checkin-badge.can { background: var(--jb-accent-light); color: var(--jb-accent); }
.jb-checkin-badge.can:hover { background: var(--jb-accent); color: #fff; transform: scale(1.05); }
.jb-checkin-badge.done { background: #f3f4f6; color: var(--jb-text-tertiary); cursor: default; }

/* ===== 评分 ===== */
.jb-rating-stars { display: inline-flex; gap: 2px; align-items: center; }
.jb-rating-star { cursor: pointer; width: 20px; height: 20px; transition: all 0.15s; }
.jb-rating-star:hover, .jb-rating-star.active { color: #f59e0b; transform: scale(1.2); }
.jb-rating-star.inactive { color: var(--jb-border); }
.jb-rating-info { font-size: 11px; color: var(--jb-text-tertiary); margin-left: 6px; }
.jb-thread-rating { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; color: var(--jb-text-secondary); }
.jb-thread-rating svg { width: 14px; height: 14px; color: #f59e0b; }

/* ===== 勋章展示 ===== */
.jb-medal-item { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; color: #fff; }
.jb-medal-display { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }

@media (max-width: 640px) {
  .jb-help-grid { grid-template-columns: 1fr; }
  .jb-help-side { position: static; }
  .jb-help-side-nav { display: flex; flex-wrap: wrap; gap: 0; }
  .jb-help-side-nav a { border-left: none; border-bottom: 2px solid transparent; flex: 1; text-align: center; min-width: 80px; font-size: 12px; padding: 8px; }
  .jb-help-side-nav a.active { border-bottom-color: var(--jb-accent); }
}