/* 全站悬浮搜索：按钮 + 搜索卡片（白色简约 · 绿色主题） */
#sfx-fab{position:fixed;right:25px;bottom:25px;width:50px;height:50px;border-radius:50%;border:1px solid var(--line,#e8ecef);padding:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;z-index:1050;font-size:18px;color:var(--g-d,#1e8a39);
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 10px 30px -8px rgba(16,24,40,.25);
  transition:bottom .3s ease,transform .2s,background .2s,color .2s}
#sfx-fab:hover{background:var(--g,#28a745);color:#fff;transform:translateY(-2px)}
#sfx-fab:focus-visible{outline:3px solid rgba(40,167,69,.35);outline-offset:2px}
#sfx-fab.up{bottom:87px}   /* 「返回顶部」按钮出现时，位于其正上方 */

html.sfx-lock{overflow:hidden}
#sfx-overlay{position:fixed;inset:0;z-index:2000;display:flex;align-items:flex-start;justify-content:center;padding:11vh 14px 14px;box-sizing:border-box;
  background:rgba(15,23,42,.42);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);opacity:0;transition:opacity .18s}
#sfx-overlay[hidden]{display:none}
#sfx-overlay.show{opacity:1}
.sfx-card{width:min(660px,100%);max-height:78vh;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line,#e8ecef);border-radius:22px;
  box-shadow:0 30px 80px -20px rgba(16,24,40,.45);overflow:hidden;transform:translateY(-10px) scale(.98);transition:transform .2s cubic-bezier(.2,.8,.2,1)}
#sfx-overlay.show .sfx-card{transform:none}

.sfx-bar{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line2,#f0f3f5)}
.sfx-ico{color:var(--g,#28a745);font-size:1rem;flex:none}
.sfx-input{flex:1;min-width:0;border:0;outline:0;background:transparent;font:inherit;font-size:1.05rem;color:var(--ink,#111827);padding:6px 2px;-webkit-appearance:none;appearance:none}
.sfx-input::-webkit-search-cancel-button,.sfx-input::-webkit-search-decoration{-webkit-appearance:none;display:none}
.sfx-input::placeholder{color:var(--faint,#9ca3af)}
.sfx-clear{flex:none;width:26px;height:26px;border:0;border-radius:50%;background:var(--line2,#f0f3f5);color:var(--muted,#6b7280);cursor:pointer;font-size:.75rem;display:grid;place-items:center}
.sfx-clear[hidden]{display:none}
.sfx-clear:hover{background:var(--g-soft,#eaf7ed);color:var(--g-d,#1e8a39)}
.sfx-close{flex:none;border:1px solid var(--line,#e8ecef);background:#fff;color:var(--muted,#6b7280);border-radius:8px;padding:3px 9px;font-family:inherit;font-weight:600;font-size:.75rem;line-height:1.4;cursor:pointer}
.sfx-close:hover{border-color:var(--g-l,#a7d7a9);color:var(--g-d,#1e8a39)}

.sfx-tabs{display:flex;gap:6px;padding:10px 16px 0}
.sfx-tab{border:0;background:transparent;border-radius:999px;padding:6px 14px;font:inherit;font-size:.88rem;color:var(--muted,#6b7280);cursor:pointer;transition:background .15s,color .15s}
.sfx-tab em{font-style:normal;margin-left:6px;font-size:.78rem;opacity:.75}
.sfx-tab:hover{background:var(--g-soft2,#f4fbf6)}
.sfx-tab.on{background:var(--g-soft,#eaf7ed);color:var(--g-d,#1e8a39);font-weight:600}

.sfx-body{flex:1;min-height:120px;overflow-y:auto;overscroll-behavior:contain;padding:8px 10px 10px}
.sfx-group{padding:10px 10px 4px;font-size:.78rem;font-weight:700;letter-spacing:.04em;color:var(--faint,#9ca3af)}
.sfx-group em{font-style:normal;margin-left:6px;font-weight:500}
.sfx-item{display:flex;align-items:flex-start;gap:12px;padding:11px 12px;border-radius:14px;text-decoration:none!important;color:inherit;border:1px solid transparent;transition:background .12s,border-color .12s}
.sfx-item.active{background:var(--g-soft2,#f4fbf6);border-color:var(--g-l,#a7d7a9)}
.sfx-badge{flex:none;margin-top:2px;padding:1px 8px;border-radius:6px;font-size:.72rem;font-weight:600;background:var(--g-soft,#eaf7ed);color:var(--g-d,#1e8a39)}
.sfx-badge.repost{background:#eff6ff;color:#2563eb}
.sfx-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.sfx-title{font-weight:650;color:var(--ink,#111827);line-height:1.45;word-break:break-word}
.sfx-desc{font-size:.86rem;color:var(--muted,#6b7280);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sfx-meta{font-size:.78rem;color:var(--faint,#9ca3af)}
.sfx-go{flex:none;align-self:center;color:var(--g,#28a745);opacity:0;transform:translateX(-4px);transition:opacity .15s,transform .15s}
.sfx-item.active .sfx-go{opacity:1;transform:none}
.sfx-body mark{background:rgba(40,167,69,.2);color:inherit;border-radius:3px;padding:0 1px}
.sfx-more{padding:6px 12px 10px;font-size:.8rem;color:var(--faint,#9ca3af)}

.sfx-tip{text-align:center;padding:34px 16px;color:var(--muted,#6b7280)}
.sfx-tip i{display:block;font-size:2.2rem;color:var(--g-l,#a7d7a9);margin-bottom:10px}
.sfx-tip p{margin:0 0 4px;color:var(--ink,#111827);font-weight:600;word-break:break-all}
.sfx-tip small{color:var(--faint,#9ca3af)}
.sfx-spin{width:26px;height:26px;margin:0 auto 12px;border-radius:50%;border:3px solid var(--g-soft,#eaf7ed);border-top-color:var(--g,#28a745);animation:sfx-r .7s linear infinite}
@keyframes sfx-r{to{transform:rotate(360deg)}}

.sfx-foot{display:flex;gap:16px;justify-content:flex-end;padding:9px 16px;border-top:1px solid var(--line2,#f0f3f5);background:#fafbfb;font-size:.76rem;color:var(--faint,#9ca3af)}
.sfx-foot kbd{display:inline-block;min-width:18px;margin-right:3px;padding:0 5px;text-align:center;border:1px solid var(--line,#e8ecef);border-bottom-width:2px;border-radius:5px;background:#fff;font:inherit;font-size:.72rem;color:var(--muted,#6b7280)}

@media(max-width:768px){
  #sfx-fab{right:15px;bottom:15px;width:40px;height:40px;font-size:15px}
  #sfx-fab.up{bottom:65px}
  #sfx-overlay{padding-top:7vh}
  .sfx-card{max-height:84vh;border-radius:18px}
  .sfx-foot{display:none}
  .sfx-close{display:none}
}
@media(prefers-reduced-motion:reduce){#sfx-overlay,.sfx-card,#sfx-fab{transition:none}}