/* 全站左侧分类导航（sidebar.js 渲染，勿手工编辑生成的 DOM） */

#site-sidebar, #sidebar-toggle {
  --sb-bg: #ffffff;
  --sb-line: #e4e7ec;
  --sb-text: #101828;
  --sb-text-2: #344054;
  --sb-muted: #667085;
  --sb-faint: #98a2b3;
  --sb-hover: #f2f4f7;
  --sb-chip: #f2f4f7;
  --sb-accent: #1d4ed8;
  --sb-accent-soft: #eef4ff;
  --sb-accent-chip: #dbe7ff;
  --sb-input-bg: #f9fafb;
  --sb-shadow: 0 4px 14px -4px rgba(16, 24, 40, .25);
}
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) #site-sidebar,
  html:not([data-theme="light"]) #sidebar-toggle {
    --sb-bg: #161b26; --sb-line: #2a3142; --sb-text: #e6e9f0; --sb-text-2: #c3cad9;
    --sb-muted: #9aa4b8; --sb-faint: #6b768c; --sb-hover: #232a3a; --sb-chip: #232a3a;
    --sb-accent: #8ab4ff; --sb-accent-soft: #1d2a45; --sb-accent-chip: #26355a;
    --sb-input-bg: #1d2433; --sb-shadow: 0 4px 14px -4px rgba(0, 0, 0, .6);
  }
}
html[data-theme="dark"] #site-sidebar,
html[data-theme="dark"] #sidebar-toggle {
  --sb-bg: #161b26; --sb-line: #2a3142; --sb-text: #e6e9f0; --sb-text-2: #c3cad9;
  --sb-muted: #9aa4b8; --sb-faint: #6b768c; --sb-hover: #232a3a; --sb-chip: #232a3a;
  --sb-accent: #8ab4ff; --sb-accent-soft: #1d2a45; --sb-accent-chip: #26355a;
  --sb-input-bg: #1d2433; --sb-shadow: 0 4px 14px -4px rgba(0, 0, 0, .6);
}

#site-sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; z-index: 60;
  width: 252px;
  display: flex; flex-direction: column;
  background: var(--sb-bg); border-right: 1px solid var(--sb-line);
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13.5px; color: var(--sb-text);
  transform: translateX(-100%);
  transition: transform .22s ease;
  visibility: hidden;
}
#site-sidebar.sb-open { transform: translateX(0); visibility: visible; }

/* 桌面端：常驻左侧，内容整体右移；分类按钮可折叠侧栏 */
@media (min-width: 1200px) {
  #site-sidebar { transform: none; visibility: visible; }
  body.sb-body { margin-left: 252px; transition: margin-left .22s ease; }
  #sidebar-backdrop { display: none !important; }
  body.sb-body.sb-collapsed { margin-left: 0; }
  body.sb-body.sb-collapsed #site-sidebar { transform: translateX(-100%); visibility: hidden; }
  body.sb-body:not(.sb-collapsed) #sidebar-toggle { left: 266px; }
}

/* 悬浮开关：明眼色 + 大号 */
#sidebar-toggle {
  position: fixed; left: 14px; bottom: 18px; z-index: 70;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 11px 18px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--sb-accent); background: var(--sb-accent); color: #fff;
  font-size: 14px; font-weight: 600; font-family: inherit;
  box-shadow: 0 6px 18px -4px rgba(29, 78, 216, .55);
  transition: left .22s ease, transform .15s ease, box-shadow .15s ease;
}
#sidebar-toggle:hover { transform: translateY(-2px); box-shadow: 0 10px 26px -6px rgba(29, 78, 216, .6); }
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) #sidebar-toggle {
    color: #0b1220;
    box-shadow: 0 6px 18px -4px rgba(0, 0, 0, .6);
  }
}
html[data-theme="dark"] #sidebar-toggle {
  color: #0b1220;
  box-shadow: 0 6px 18px -4px rgba(0, 0, 0, .6);
}
#sidebar-backdrop {
  position: fixed; inset: 0; z-index: 58;
  background: rgba(16, 24, 40, .45);
  opacity: 0; pointer-events: none; transition: opacity .2s ease;
}
#sidebar-backdrop.sb-show { opacity: 1; pointer-events: auto; }

.sb-head {
  flex: 0 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--sb-line);
}
.sb-head a.sb-home {
  font-weight: 700; font-size: 14px; color: var(--sb-text); text-decoration: none;
  display: inline-flex; align-items: center; gap: 7px;
}
.sb-head a.sb-home:hover { color: var(--sb-accent); }
.sb-head a.sb-home svg { flex: 0 0 auto; }
.sb-close {
  display: none; border: 0; background: none; cursor: pointer;
  font-size: 18px; line-height: 1; color: var(--sb-muted); padding: 4px 6px; border-radius: 6px;
}
.sb-close:hover { color: var(--sb-text); background: var(--sb-hover); }
@media (max-width: 1199.98px) { .sb-close { display: block; } }

.sb-search { flex: 0 0 auto; padding: 10px 12px 6px; }
.sb-search input {
  width: 100%; box-sizing: border-box;
  padding: 7px 10px; border-radius: 8px; font-size: 13px; font-family: inherit;
  border: 1px solid var(--sb-line); background: var(--sb-input-bg); color: var(--sb-text); outline: none;
}
.sb-search input:focus { border-color: var(--sb-accent); background: var(--sb-bg); }
.sb-search input::placeholder { color: var(--sb-muted); }

.sb-scroll { flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain; padding: 6px 8px 18px; }
.sb-scroll::-webkit-scrollbar { width: 8px; }
.sb-scroll::-webkit-scrollbar-thumb { background: var(--sb-line); border-radius: 4px; }

.sb-group { margin: 2px 0; }
.sb-cat {
  width: 100%; display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border: 0; border-radius: 8px; cursor: pointer;
  background: none; color: var(--sb-text-2); font-size: 13.5px; font-family: inherit; text-align: left;
}
.sb-cat:hover { background: var(--sb-hover); color: var(--sb-text); }
.sb-cat .sb-caret {
  flex: 0 0 auto; width: 14px; text-align: center;
  font-size: 10px; color: var(--sb-faint); transition: transform .15s ease;
}
.sb-group.sb-exp .sb-caret { transform: rotate(90deg); }
.sb-cat .sb-name { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sb-cat .sb-count {
  flex: 0 0 auto; font-size: 11px; color: var(--sb-muted);
  background: var(--sb-chip); border-radius: 999px; padding: 1px 7px;
}
.sb-cat.sb-active { background: var(--sb-accent-soft); color: var(--sb-accent); font-weight: 600; }
.sb-cat.sb-active .sb-count { background: var(--sb-accent-chip); color: var(--sb-accent); }

.sb-tools { list-style: none; margin: 2px 0 4px; padding: 0 0 0 22px; display: none; }
.sb-group.sb-exp .sb-tools { display: block; }
.sb-tools a {
  display: block; padding: 5px 10px; border-radius: 7px;
  color: var(--sb-muted); text-decoration: none; font-size: 13px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sb-tools a:hover { background: var(--sb-hover); color: var(--sb-text); }
.sb-tools li.sb-cur > a { background: var(--sb-accent-soft); color: var(--sb-accent); font-weight: 600; }

.sb-empty { padding: 14px 12px; color: var(--sb-muted); font-size: 12.5px; }

/* ---------- 手机扫码按钮 + 二维码弹窗（sidebar.js 渲染） ---------- */

.sb-head .sb-scan {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 5px;
  border: 0; background: none; cursor: pointer;
  font-family: inherit; font-size: 12px; color: var(--sb-muted);
  padding: 4px 8px; border-radius: 7px;
  transition: color .15s ease, background .15s ease;
}
.sb-head .sb-scan:hover { color: var(--sb-accent); background: var(--sb-hover); }
.sb-head .sb-scan svg { flex: 0 0 auto; }

.sb-qr-backdrop {
  position: fixed; inset: 0; z-index: 120;
  background: rgba(15, 18, 26, .45);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}
.sb-qr-modal {
  position: relative;
  width: 300px; max-width: 100%;
  background: #ffffff; color: #101828;
  border: 1px solid #e4e7ec; border-radius: 14px;
  padding: 26px 22px 20px;
  text-align: center;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .22);
}
.sb-qr-modal h3 { margin: 0 0 14px; font-size: 15px; font-weight: 700; }
.sb-qr-box {
  display: inline-flex; padding: 10px;
  background: #ffffff; border: 1px solid #e4e7ec; border-radius: 10px;
  min-width: 180px; min-height: 180px; align-items: center; justify-content: center;
  font-size: 13px; color: #667085;
}
.sb-qr-box svg { display: block; width: 208px; height: 208px; }
.sb-qr-modal p { margin: 12px 0 6px; font-size: 13px; color: #667085; }
.sb-qr-url {
  display: block; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px; color: #98a2b3;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sb-qr-close {
  position: absolute; top: 8px; right: 10px;
  width: 28px; height: 28px;
  border: 0; background: none; cursor: pointer;
  font-size: 18px; line-height: 1; color: #667085;
  border-radius: 7px;
}
.sb-qr-close:hover { color: #101828; background: #f2f4f7; }

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .sb-qr-modal {
    background: #161b26; color: #e6e9f0;
    border-color: #2a3142; box-shadow: 0 12px 40px rgba(0, 0, 0, .6);
  }
  html:not([data-theme="light"]) .sb-qr-modal p,
  html:not([data-theme="light"]) .sb-qr-box { color: #9aa4b8; }
  html:not([data-theme="light"]) .sb-qr-box { border-color: #2a3142; }
  html:not([data-theme="light"]) .sb-qr-close { color: #9aa4b8; }
  html:not([data-theme="light"]) .sb-qr-close:hover { color: #e6e9f0; background: #232a3a; }
}
html[data-theme="dark"] .sb-qr-modal {
  background: #161b26; color: #e6e9f0;
  border-color: #2a3142; box-shadow: 0 12px 40px rgba(0, 0, 0, .6);
}
html[data-theme="dark"] .sb-qr-modal p,
html[data-theme="dark"] .sb-qr-box { color: #9aa4b8; }
html[data-theme="dark"] .sb-qr-box { border-color: #2a3142; }
html[data-theme="dark"] .sb-qr-close { color: #9aa4b8; }
html[data-theme="dark"] .sb-qr-close:hover { color: #e6e9f0; background: #232a3a; }