*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#e8e4d5; --panel:#fcfbf7; --border:#d8d2c0; --border-strong:#c8c0a8;
  --text:#2e3a3a; --dim:#8a8878; --accent:#3a5a7a; --out:#f4f2e8;
  --warn:#c06040; --ok:#308040; --mid:#b09030;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#14181a; --panel:#1e2426; --border:#2e3638; --border-strong:#3e4a4c;
    --text:#d8e0e0; --dim:#7a8888; --accent:#7aa8d0; --out:#181e20;
    --warn:#e08060; --ok:#60c080; --mid:#d0b060;
  }
}
html,body{height:100%}
body{
  background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
  display:flex; flex-direction:column; height:100dvh;
  padding:calc(env(safe-area-inset-top) + 10px) 12px calc(env(safe-area-inset-bottom) + 10px);
  gap:9px; overflow:hidden;
}
.iframe-warn,.install-banner{border-radius:8px;font-size:12px;padding:6px 10px;
  letter-spacing:.04em;flex-shrink:0}
.iframe-warn{display:none;background:var(--warn);color:#fff}
.iframe-warn.show{display:block}
.install-banner{background:var(--accent);color:#fff;display:flex;align-items:center;gap:8px}
.install-banner[hidden]{display:none}
.install-banner span{flex:1}
.install-banner button{background:rgba(255,255,255,.2);border:none;color:#fff;
  padding:3px 10px;border-radius:6px;font:inherit;font-size:11px;cursor:pointer}
.install-banner button:hover{background:rgba(255,255,255,.3)}
.offline-badge{position:fixed;top:calc(env(safe-area-inset-top) + 6px);right:10px;
  background:var(--mid);color:#fff;font-size:10px;letter-spacing:.08em;
  padding:3px 8px;border-radius:12px;opacity:0;transition:opacity .3s;
  pointer-events:none;z-index:50}
.offline-badge.show{opacity:.9}
header{display:flex;align-items:center;justify-content:space-between;
  padding:0 4px;flex-shrink:0;gap:10px}
.brand{font-size:19px;font-weight:700;letter-spacing:.15em;flex-shrink:0}
.brand em{font-style:normal;color:var(--accent)}
.keyrow{display:flex;align-items:center;gap:6px;flex:1;min-width:0;justify-content:flex-end}
.keybox{display:flex;align-items:center;gap:6px;background:var(--panel);
  border:1px solid var(--border-strong);border-radius:9px;padding:5px 10px;
  transition:border-color .18s;flex:1;min-width:0;max-width:260px}
.keybox:focus-within{border-color:var(--accent)}
.keylabel{font-size:11px;color:var(--dim);letter-spacing:.1em;user-select:none;flex-shrink:0}
#key{background:none;border:none;outline:none;color:var(--text);font:inherit;
  font-size:13px;flex:1;min-width:0;letter-spacing:.04em}
#key::placeholder{color:var(--dim);opacity:.6}
.keybtn{background:none;border:1px solid var(--border-strong);color:var(--dim);
  font:inherit;font-size:11px;letter-spacing:.06em;padding:5px 9px;border-radius:8px;
  cursor:pointer;transition:all .15s;flex-shrink:0;-webkit-tap-highlight-color:transparent}
.keybtn:hover{color:var(--text);border-color:var(--accent)}
.keybtn:active{background:rgba(120,120,120,.12)}
.tabs{display:flex;gap:4px;flex-shrink:0;background:var(--panel);
  border:1px solid var(--border-strong);border-radius:12px;padding:3px}
.tab{flex:1;background:none;border:none;color:var(--dim);font:inherit;
  font-size:12.5px;letter-spacing:.06em;padding:8px 0;border-radius:9px;
  cursor:pointer;transition:all .18s;-webkit-tap-highlight-color:transparent}
.tab.active{background:var(--out);color:var(--text);font-weight:600;
  box-shadow:0 1px 4px rgba(0,0,0,.10)}
.view{display:none;flex:1 1 0;min-height:0;flex-direction:column;gap:9px}
.view.active{display:flex}
.panel{flex:1 1 0;min-height:0;display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--border-strong);
  border-radius:13px;overflow:hidden;transition:border-color .18s;position:relative}
.panel:focus-within{border-color:var(--accent)}
.panel.out{background:var(--out)}
.panel.dragover::after{content:'松开以载入文件';position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(58,90,122,.15);color:var(--accent);
  font-size:14px;letter-spacing:.08em;pointer-events:none;
  border:2px dashed var(--accent);border-radius:13px}
.head{display:flex;align-items:center;justify-content:space-between;
  padding:8px 13px;font-size:10.5px;letter-spacing:.16em;color:var(--dim);
  border-bottom:1px solid var(--border);flex-shrink:0;user-select:none;gap:8px}
.head .label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.head .tools{display:flex;gap:2px;align-items:center;flex-shrink:0}
.head button{background:none;border:none;color:var(--dim);font:inherit;
  font-size:10.5px;letter-spacing:.08em;padding:3px 8px;border-radius:6px;
  cursor:pointer;transition:all .15s;-webkit-tap-highlight-color:transparent;white-space:nowrap}
.head button:hover{color:var(--text);background:rgba(120,120,120,.10)}
.head button:active{background:rgba(120,120,120,.18)}
.head .count{font-size:10.5px;color:var(--dim);opacity:.7;letter-spacing:0;
  font-variant-numeric:tabular-nums;flex-shrink:0}
textarea{flex:1;width:100%;min-height:0;background:none;border:none;outline:none;
  resize:none;padding:13px;color:var(--text);font:inherit;font-size:16px;
  line-height:1.72;-webkit-appearance:none}
textarea::placeholder{color:var(--dim);opacity:.6}
textarea[readonly]{cursor:default;-webkit-user-select:text;user-select:text}
.mono{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  font-size:13px;letter-spacing:.06em;line-height:1.9;word-break:break-all}
.statusbar{display:flex;align-items:center;gap:8px;padding:0 4px;
  min-height:16px;font-size:10.5px;letter-spacing:.06em;color:var(--dim);flex-wrap:wrap}
.statusbar .dot{width:7px;height:7px;border-radius:50%;background:var(--dim);
  opacity:.3;flex-shrink:0;transition:all .25s}
.statusbar.syncing .dot{background:var(--accent);opacity:1;animation:pulse 1s infinite}
.statusbar.ok .dot{background:var(--ok);opacity:1}
.statusbar.err .dot{background:var(--warn);opacity:1}
.statusbar.warn .dot{background:var(--mid);opacity:1}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}
.statusbar .msg{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.statusbar .finger{font-family:ui-monospace,Menlo,monospace;letter-spacing:0;
  opacity:.7;font-variant-numeric:tabular-nums;flex-shrink:0}
.opts{display:flex;gap:10px 14px;flex-wrap:wrap;padding:0 4px;
  font-size:10.5px;color:var(--dim);letter-spacing:.04em;user-select:none;align-items:center}
.opts label{display:inline-flex;align-items:center;gap:4px;cursor:pointer}
.opts input[type=checkbox]{accent-color:var(--accent)}
.opts select{background:var(--panel);color:var(--text);font:inherit;font-size:10.5px;
  border:1px solid var(--border-strong);border-radius:6px;padding:2px 4px;
  outline:none;cursor:pointer;letter-spacing:.04em}
footer{flex-shrink:0;text-align:center;font-size:10px;letter-spacing:.1em;
  color:var(--dim);opacity:.6;padding-top:2px;user-select:none}
.toast{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom) + 20px);
  transform:translateX(-50%) translateY(20px);
  background:var(--text);color:var(--bg);font-size:12px;
  padding:7px 16px;border-radius:20px;opacity:0;pointer-events:none;
  transition:all .25s;z-index:100;letter-spacing:.05em;max-width:80vw;text-align:center}
.toast.show{opacity:.95;transform:translateX(-50%) translateY(0)}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:200;
  display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal-inner{background:var(--panel);border:1px solid var(--border-strong);
  border-radius:14px;padding:18px;max-width:min(92vw,440px);
  display:flex;flex-direction:column;gap:12px;align-items:center;
  max-height:90vh;overflow-y:auto}
.modal-head{display:flex;justify-content:space-between;width:100%;
  font-size:12px;letter-spacing:.1em;color:var(--dim)}
.modal-head button{background:none;border:none;color:var(--dim);font-size:18px;
  cursor:pointer;padding:0 6px;line-height:1}
.modal-head button:hover{color:var(--text)}
#qr-canvas{width:100%;height:auto;max-width:320px;image-rendering:pixelated;
  border:6px solid #fff;border-radius:6px;background:#fff}
#scan-video{width:100%;max-width:360px;height:auto;border-radius:10px;
  background:#000;aspect-ratio:1;object-fit:cover}
.modal-note{font-size:11px;color:var(--dim);text-align:center;letter-spacing:.04em}
.vault-list{display:flex;flex-direction:column;gap:6px;width:100%;
  max-height:40vh;overflow-y:auto;margin:4px 0}
.vault-item{display:flex;align-items:center;gap:8px;padding:8px 10px;
  background:var(--out);border:1px solid var(--border);border-radius:8px;font-size:12px}
.vault-item .vn{font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vault-item .vh{color:var(--dim);font-size:10.5px;flex-shrink:0}
.vault-item button{background:none;border:none;color:var(--dim);
  cursor:pointer;font-size:11px;padding:2px 6px;border-radius:5px}
.vault-item button:hover{color:var(--text);background:rgba(120,120,120,.12)}
.vault-add{display:flex;flex-direction:column;gap:6px;width:100%;margin-top:6px}
.vault-add input{background:var(--out);border:1px solid var(--border-strong);
  color:var(--text);font:inherit;font-size:12px;padding:7px 9px;border-radius:7px;outline:none}
.vault-add input:focus{border-color:var(--accent)}
.vault-add button{background:var(--accent);color:#fff;border:none;
  font:inherit;font-size:12px;padding:8px;border-radius:7px;cursor:pointer;letter-spacing:.06em}
.vault-add button.keybtn{background:none;color:var(--dim);border:1px solid var(--border-strong)}
.qr-nav{display:flex;align-items:center;gap:10px;font-size:11px;
  color:var(--dim);letter-spacing:.06em}
.qr-nav button{background:none;border:1px solid var(--border-strong);
  color:var(--dim);font:inherit;font-size:11px;padding:4px 10px;
  border-radius:6px;cursor:pointer}
.qr-nav button:hover{color:var(--text);border-color:var(--accent)}
/* 追加：二维码保存按钮的间距 */
#qr-save{margin:0 auto}