/* ── RESET & VARS ── */
:root{
  --a:#4e6ef2; --al:#eef1fd; --a2:#6b82f5;
  --bg:#f4f6fb; --w:#fff;
  --bd:#e5e8f0; --bd2:#c8cde0;
  --t:#1a1d2e; --t2:#5a607a; --t3:#9aa0b8;
  --r:12px; --rsm:8px;
  --nav:56px; --tab:58px;
  --safe-b:env(safe-area-inset-bottom,0px);
}
/* WeChat compatibility fixes */
@supports (-webkit-touch-callout: none){
  .qr-wrap,.tpl-prev,.fp-canvas{aspect-ratio:auto;}
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;overflow:hidden;}
body{font-family:'PingFang SC','SF Pro Text','Helvetica Neue',system-ui,sans-serif;background:var(--bg);color:var(--t);font-size:14px;-webkit-font-smoothing:antialiased;}

/* ── TOP NAV ── */
.topnav{
  position:fixed;top:0;left:0;right:0;
  height:var(--nav);z-index:200;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--bd);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px 0 14px;
}
.nav-logo{display:flex;align-items:center;gap:9px;font-weight:700;font-size:16px;letter-spacing:-.3px;}
.nav-icon{width:30px;height:30px;background:linear-gradient(135deg,#4e6ef2,#7c5cef);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.nav-icon svg{width:17px;height:17px;fill:#fff;}
.nav-logo em{color:var(--a);font-style:normal;}
.nav-dl{display:flex;align-items:center;gap:8px;}
.nav-dl button{height:34px;padding:0 14px;border-radius:var(--rsm);font-size:13px;font-weight:600;cursor:pointer;border:none;transition:all .15s;}
.btn-ghost{background:var(--al);color:var(--a);}
.btn-solid{background:var(--a);color:#fff;}
.btn-solid:active{background:var(--a2);}

/* ── PAGES ── */
.page{
  position:fixed;top:var(--nav);left:0;right:0;
  bottom:calc(var(--tab) + var(--safe-b));
  overflow-y:auto;overflow-x:hidden;
  -webkit-overflow-scrolling:touch;
  display:none;
  background:var(--bg);
  z-index:1;
}
.page.active{display:block;}
.page::-webkit-scrollbar{display:none;}

/* ── BOTTOM TAB BAR ── */
.tabbar{
  position:fixed !important;left:0 !important;right:0 !important;bottom:0 !important;
  height:calc(var(--tab) + var(--safe-b)) !important;
  padding-bottom:var(--safe-b);
  background:rgba(255,255,255,0.95);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--bd);
  display:flex;z-index:999;
}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;padding-top:2px;}
.tab-icon{width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:8px;transition:all .2s;}
.tab-icon svg{width:20px;height:20px;fill:var(--t3);transition:fill .2s;}
.tab-label{font-size:10px;font-weight:500;color:var(--t3);transition:color .2s;}
.tab.active .tab-icon{background:var(--al);}
.tab.active .tab-icon svg{fill:var(--a);}
.tab.active .tab-label{color:var(--a);font-weight:700;}

/* ──────────────────────
   PAGE 1: 预览页
────────────────────── */
.preview-page{padding:16px 16px 20px;}
.qr-card{background:var(--w);border-radius:20px;padding:20px;box-shadow:0 4px 24px rgba(78,110,242,.1);display:flex;flex-direction:column;align-items:center;gap:14px;}
.qr-wrap{position:relative;width:100%;max-width:280px;background:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.qr-wrap::before{content:'';display:block;padding-top:100%;}
#qr-canvas{width:100%;height:100%;display:block;}
.logo-ov{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;border-radius:8px;display:none;align-items:center;justify-content:center;overflow:hidden;padding:3px;}
.logo-ov img{width:100%;height:100%;object-fit:contain;border-radius:5px;}
.qr-info-row{width:100%;display:flex;justify-content:space-between;align-items:center;}
.qr-info-txt{font-size:11px;color:var(--t3);}
.qr-info-ec{font-size:11px;color:var(--a);font-weight:600;background:var(--al);padding:2px 8px;border-radius:4px;}
.text-strip{width:100%;border-radius:8px;padding:9px 14px;text-align:center;display:none;}
.text-strip span{font-size:13px;font-weight:500;}

/* ──────────────────────
   PAGE 2: 内容页
────────────────────── */
.content-page{padding:16px;}
.seg{display:flex;background:var(--bg);border-radius:var(--rsm);padding:3px;gap:2px;margin-bottom:16px;overflow-x:auto;}
.seg::-webkit-scrollbar{display:none;}
.seg-item{flex-shrink:0;padding:7px 14px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;color:var(--t2);white-space:nowrap;transition:all .15s;}
.seg-item.active{background:var(--w);color:var(--a);font-weight:600;box-shadow:0 1px 4px rgba(0,0,0,.08);}
.cp{display:none;} .cp.active{display:block;}
.field{margin-bottom:14px;}
.flabel{font-size:11px;color:var(--t3);font-weight:600;letter-spacing:.4px;text-transform:uppercase;margin-bottom:6px;display:block;}
.inp,.sel,.txa{width:100%;border:1.5px solid var(--bd);border-radius:var(--rsm);padding:11px 13px;font-size:15px;color:var(--t);background:var(--w);font-family:inherit;-webkit-appearance:none;transition:border .15s;}
.txa{min-height:80px;resize:none;}
.inp:focus,.sel:focus,.txa:focus{outline:none;border-color:var(--a);}
.sel{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%239aa0b8'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-color:var(--w);cursor:pointer;}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.card{background:var(--w);border-radius:var(--r);padding:16px;margin-bottom:12px;box-shadow:0 1px 6px rgba(0,0,0,.04);}
.card-title{font-size:12px;font-weight:600;color:var(--t3);letter-spacing:.4px;text-transform:uppercase;margin-bottom:12px;display:flex;align-items:center;gap:7px;}
.card-title::after{content:'';flex:1;height:1px;background:var(--bd);}
.ec-row{display:flex;gap:7px;}
.ec-btn{flex:1;padding:9px 4px;border-radius:var(--rsm);border:1.5px solid var(--bd);background:var(--w);color:var(--t2);font-size:13px;font-weight:600;cursor:pointer;text-align:center;transition:all .15s;}
.ec-btn.active{background:var(--al);border-color:var(--a);color:var(--a);}

/* ──────────────────────
   PAGE 3: 样式页
────────────────────── */
.style-page{padding:12px 16px 20px;}

/* shape grid */
.shape-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:4px;}
.sc{display:flex;flex-direction:column;align-items:center;gap:5px;padding:8px 4px;border:1.5px solid var(--bd);border-radius:var(--rsm);cursor:pointer;background:var(--w);transition:all .15s;}
.sc.active{border-color:var(--a);background:var(--al);}
.sc canvas{display:block;}
.sc-name{font-size:10px;color:var(--t3);text-align:center;}
.sc.active .sc-name{color:var(--a);}

/* eye grid */
.eye-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;}
.ec2{display:flex;flex-direction:column;align-items:center;gap:5px;padding:9px 6px;border:1.5px solid var(--bd);border-radius:var(--rsm);cursor:pointer;background:var(--w);transition:all .15s;}
.ec2.active{border-color:var(--a);background:var(--al);}
.ec2-name{font-size:10px;color:var(--t3);}
.ec2.active .ec2-name{color:var(--a);}

/* preset chips */
.preset-row{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:12px;}
.pc{width:32px;height:32px;border-radius:50%;cursor:pointer;border:2.5px solid transparent;transition:all .15s;}
.pc.active,.pc:active{border-color:var(--a);transform:scale(1.15);}
.color-row{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.csw{width:40px;height:40px;border-radius:50%;border:2px solid var(--bd2);cursor:pointer;overflow:hidden;position:relative;flex-shrink:0;}
.csw input[type=color]{position:absolute;inset:-6px;width:calc(100%+12px);height:calc(100%+12px);border:none;opacity:0;cursor:pointer;}
.cd{position:absolute;inset:0;border-radius:50%;pointer-events:none;}
.cm{flex:1;}
.cm-lbl{font-size:13px;color:var(--t2);font-weight:500;}
.cm-val{font-size:11px;color:var(--t3);margin-top:2px;}

/* toggle */
.tog-row{display:flex;align-items:center;justify-content:space-between;padding:12px 13px;background:var(--bg);border-radius:var(--rsm);margin-bottom:10px;cursor:pointer;border:1px solid var(--bd);}
.tog-lbl{font-size:14px;color:var(--t2);}
.tog{width:44px;height:24px;border-radius:12px;background:var(--bd2);position:relative;transition:background .2s;flex-shrink:0;}
.tog.on{background:var(--a);}
.tok{position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 4px rgba(0,0,0,.25);}
.tog.on .tok{transform:translateX(20px);}

/* slider */
.sl-row{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.sl-lbl{font-size:13px;color:var(--t2);min-width:40px;}
input[type=range]{flex:1;accent-color:var(--a);height:4px;cursor:pointer;}
.sl-val{font-size:13px;color:var(--a);min-width:24px;text-align:right;font-weight:700;}

/* upload */
.upl{border:2px dashed var(--bd2);border-radius:var(--r);padding:18px;text-align:center;cursor:pointer;position:relative;background:var(--w);transition:all .15s;}
.upl:active{background:var(--al);border-color:var(--a);}
.upl input{position:absolute;inset:0;opacity:0;cursor:pointer;}
.upl-img{max-height:56px;border-radius:6px;display:none;}

/* ──────────────────────
   PAGE 4: 模板页
────────────────────── */
.tpl-page{padding:12px 16px 20px;}
.tpl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;}
.tpl-card{border:2px solid var(--bd);border-radius:var(--r);overflow:hidden;cursor:pointer;background:var(--w);transition:border-color .15s;position:relative;}
.tpl-card:active,.tpl-card.active{border-color:var(--a);}
.tpl-prev{width:100%;position:relative;display:flex;align-items:center;justify-content:center;padding:8px;}
.tpl-prev::before{content:'';display:block;padding-top:100%;}
.tpl-prev canvas{display:block;max-width:100%;max-height:100%;}
.tpl-name{font-size:11px;color:var(--t2);text-align:center;padding:5px 4px 7px;font-weight:500;border-top:1px solid var(--bd);}
.tpl-open-btn{width:100%;padding:14px;background:var(--a);color:#fff;border:none;border-radius:var(--r);font-size:14px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:12px;transition:all .2s;}
.tpl-open-btn svg{stroke:#fff;}
.tpl-open-btn:active{background:var(--a2);transform:scale(.98);}

.float-preview{position:fixed;bottom:80px;right:16px;width:140px;background:var(--w);border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.15);z-index:100;overflow:hidden;cursor:move;transition:transform .1s;}
.float-preview.hidden{display:none;}
.fp-header{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;background:var(--bg);border-bottom:1px solid var(--bd2);}
.fp-canvas{width:100%;position:relative;display:flex;align-items:center;justify-content:center;padding:10px;background:var(--w);}
.fp-canvas::before{content:'';display:block;padding-top:100%;}
.fp-canvas canvas{display:block;width:100%!important;height:100%!important;}

/* ──────────────────────
   PAGE 5: 扫码页
────────────────────── */
.scan-page{padding:16px;}
.scan-cam-box{position:relative;width:100%;max-width:500px;margin:0 auto 10px;background:#1a1d2e;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;}
.scan-cam-box::before{content:'';display:block;padding-top:100%;}
.scan-cam-box video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:opacity .3s;}
.scan-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:2;background:#1a1d2e;transition:opacity .3s;pointer-events:none;}
.scan-placeholder-icon{width:64px;height:64px;fill:rgba(255,255,255,.25);margin-bottom:14px;animation:pulse 2s ease-in-out infinite;}
.scan-placeholder span{font-size:13px;color:rgba(255,255,255,.4);font-weight:500;text-align:center;padding:0 20px;}
@keyframes pulse{0%,100%{opacity:.25;transform:scale(1);}50%{opacity:.45;transform:scale(1.05);}}
.scan-overlay{display:flex;align-items:center;justify-content:center;z-index:5;}
.scan-frame{display:block;position:relative;width:60%;height:60%;border-radius:12px;box-shadow:0 0 0 9999px rgba(0,0,0,.55);}
.scan-line{display:block;position:absolute;left:8px;right:8px;height:2px;background:linear-gradient(90deg,transparent,var(--a),transparent);border-radius:1px;top:0;animation:scanLine 2s ease-in-out infinite;}
.scan-corner{position:absolute;width:24px;height:24px;border-color:var(--a);border-style:solid;border-width:0;}
.scan-corner.tl{top:0;left:0;border-top-width:3px;border-left-width:3px;border-top-left-radius:12px;}
.scan-corner.tr{top:0;right:0;border-top-width:3px;border-right-width:3px;border-top-right-radius:12px;}
.scan-corner.bl{bottom:0;left:0;border-bottom-width:3px;border-left-width:3px;border-bottom-left-radius:12px;}
.scan-corner.br{bottom:0;right:0;border-bottom-width:3px;border-right-width:3px;border-bottom-right-radius:12px;}
@keyframes scanLine{0%{top:10%;opacity:1;}50%{top:90%;opacity:.6;}100%{top:10%;opacity:1;}}

/* Scanning spotlight effect */
.scan-spotlight{position:absolute;inset:0;border-radius:12px;box-shadow:inset 0 0 0 9999px rgba(0,0,0,.6);animation:spotlightPulse 2s ease-in-out infinite;}
@keyframes spotlightPulse{0%,100%{box-shadow:inset 0 0 0 9999px rgba(0,0,0,.6);}50%{box-shadow:inset 0 0 0 9999px rgba(0,0,0,.5);}}

/* Scan success overlay */
.scan-success-overlay{position:absolute;inset:0;background:rgba(78,110,242,.9);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:30;animation:successFadeIn .3s ease-out;}
.scan-success-icon{width:80px;height:80px;fill:#fff;margin-bottom:16px;animation:successBounce .5s ease-out;}
.scan-success-overlay span{color:#fff;font-size:16px;font-weight:600;}
@keyframes successFadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes successBounce{0%{transform:scale(0);}50%{transform:scale(1.2);}70%{transform:scale(0.9);}100%{transform:scale(1);}}

.scan-cam-box.camera-off .scan-overlay,
.scan-cam-box.camera-off .scan-frame,
.scan-cam-box.camera-off .scan-line,
.scan-cam-box.camera-off video{display:none;}
.scan-cam-box.camera-off .scan-placeholder{display:flex;}
.scan-cam-box:not(.camera-off) .scan-placeholder{display:none;}
.cam-controls{position:absolute;bottom:12px;left:0;right:0;display:flex;justify-content:center;gap:8px;padding:0 16px;z-index:20;}
.cam-btn{display:flex;align-items:center;gap:6px;padding:10px 18px;background:#fff;border:none;border-radius:20px;font-size:13px;font-weight:600;cursor:pointer;color:#1a1d2e;transition:all .2s;box-shadow:0 4px 14px rgba(0,0,0,.25);border:2px solid transparent;}
.cam-btn svg{width:16px;height:16px;fill:#1a1d2e;}
.cam-btn:active{transform:scale(.95);}
.cam-btn:hover{background:#f8f9fa;box-shadow:0 6px 20px rgba(0,0,0,.3);border-color:var(--a);}
.cam-btn.danger{background:#ef4444;color:#fff;border-color:#dc2626;}
.cam-btn.danger svg{fill:#fff;}
.cam-btn.danger:hover{background:#dc2626;border-color:#b91c1c;}
.cam-tip{position:absolute;top:12px;left:0;right:0;text-align:center;font-size:11px;color:#fff;font-weight:500;text-shadow:0 1px 4px rgba(0,0,0,.6);padding:0 12px;z-index:15;}
.cam-controls-bar{display:flex;justify-content:center;gap:10px;margin:12px 0;padding:12px;background:var(--a);border-radius:var(--r);box-shadow:0 4px 14px rgba(78,110,242,.3);}
.cam-controls-bar .cam-btn{background:rgba(255,255,255,.95);color:#1a1d2e;box-shadow:0 2px 8px rgba(0,0,0,.15);}
.cam-controls-bar .cam-btn svg{fill:#1a1d2e;}
.cam-controls-bar .cam-btn:hover{background:#fff;transform:scale(1.02);}
.cam-controls-bar .cam-btn.danger{background:#ef4444;color:#fff;border-color:#dc2626;}
.cam-controls-bar .cam-btn.danger svg{fill:#fff;}
.cam-controls-bar .cam-btn.danger:hover{background:#dc2626;}
.start-cam-btn-main{width:100%;padding:14px;background:var(--a);color:#fff;border:none;border-radius:var(--r);font-size:15px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:12px;transition:all .2s;}
.start-cam-btn-main svg{width:20px;height:20px;fill:#fff;}
.start-cam-btn-main:active{background:var(--a2);transform:scale(.98);}
.scan-drop{border:2px dashed var(--bd2);border-radius:12px;padding:16px;text-align:center;cursor:pointer;position:relative;background:var(--w);transition:all .15s;display:flex;flex-direction:column;align-items:center;}
.scan-drop:active,.scan-drop.dragover{border-color:var(--a);background:var(--al);}
.scan-drop input{position:absolute;inset:0;opacity:0;cursor:pointer;}
.scan-result{background:var(--w);border-radius:var(--r);border:1px solid var(--bd);padding:14px;margin-top:10px;display:none;}
.scan-actions{display:grid;gap:10px;margin-top:12px;}
.scan-btn{flex:1;padding:11px;border-radius:var(--rsm);font-size:13px;font-weight:600;cursor:pointer;border:none;text-align:center;}
.scan-btn.p{background:var(--a);color:#fff;}
.scan-btn.s{background:var(--bg);border:1.5px solid var(--bd);color:var(--t2);}

/* Scan History - Optimized */
.scan-history{background:var(--w);border-radius:var(--r);border:1px solid var(--bd);padding:14px;margin-top:10px;}
.scan-hist-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;flex-wrap:wrap;gap:6px;}
.scan-hist-header p{font-size:11px;color:var(--t3);font-weight:600;text-transform:uppercase;letter-spacing:.4px;}
.scan-hist-actions{display:flex;gap:4px;}
.scan-hist-btn{font-size:10px;color:var(--t3);background:var(--bg);border:1px solid var(--bd);border-radius:12px;padding:3px 8px;cursor:pointer;white-space:nowrap;transition:all .15s;}
.scan-hist-btn:active,.scan-hist-btn:hover{background:var(--al);color:var(--a);}
.scan-hist-btn.danger:hover{background:#fef2f2;color:#dc2626;border-color:#fca5a5;}
#scan-history-list{max-height:280px;overflow-y:auto;display:flex;flex-direction:column;gap:6px;}
.sh-item{display:flex;align-items:flex-start;gap:8px;padding:10px;background:var(--bg);border-radius:8px;border:1px solid transparent;transition:all .15s;cursor:pointer;position:relative;}
.sh-item:active{background:var(--al);border-color:var(--a);}
.sh-type-icon{width:28px;height:28px;border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;line-height:1;}
.sh-type-icon.url{background:#eff6ff;color:#3b82f6;}
.sh-type-icon.text{background:#f0fdf4;color:#22c55e;}
.sh-type-icon.wifi{background:#fefce8;color:#eab308;}
.sh-type-icon.vcard{background:#fdf2f8;color:#ec4899;}
.sh-type-icon.sms{background:#ede9fe;color:#8b5cf6;}
.sh-type-icon.email{background:#fff1f2;color:#ef4444;}
.sh-type-icon.other{background:#f5f5f5;color:#737373;}
.sh-body{flex:1;min-width:0;}
.sh-text{font-size:13px;color:var(--t);word-break:break-all;line-height:1.45;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;display:-webkit-box;}
.sh-meta{display:flex;align-items:center;gap:8px;margin-top:4px;}
.sh-time{font-size:10px;color:var(--t3);}
.sh-tag{font-size:9px;padding:1px 6px;border-radius:8px;background:var(--w);color:var(--t3);border:1px solid var(--bd2);}
.sh-actions{display:flex;gap:2px;flex-shrink:0;opacity:0;transition:opacity .15s;}
.sh-item:hover .sh-actions{opacity:1;}
.sh-action-btn{width:28px;height:28px;border:none;border-radius:6px;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--t3);transition:all .15s;}
.sh-action-btn:active,.sh-action-btn:hover{background:var(--w);color:var(--a);}
.sh-empty{text-align:center;padding:20px 10px;font-size:12px;color:var(--t3);}

/* ──────────────────────
   EXPORT SHEET (bottom drawer)
────────────────────── */
.sheet-mask{position:fixed;inset:0;background:rgba(0,0,0,0);z-index:300;pointer-events:none;transition:background .25s;}
.sheet-mask.open{background:rgba(0,0,0,.35);pointer-events:all;}
.sheet{position:fixed;bottom:0;left:0;right:0;background:var(--w);border-radius:20px 20px 0 0;z-index:301;transform:translateY(100%);transition:transform .3s cubic-bezier(.32,.72,0,1);padding:0 16px calc(20px + var(--safe-b));max-height:85vh;overflow-y:auto;}
.sheet.open{transform:translateY(0);}
.sheet-handle{width:36px;height:4px;background:var(--bd2);border-radius:2px;margin:12px auto 16px;}
.sheet-title{font-size:15px;font-weight:700;color:var(--t);margin-bottom:16px;text-align:center;}
.res-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:18px;}
.rb{padding:9px 4px;border-radius:var(--rsm);border:1.5px solid var(--bd);background:var(--w);color:var(--t2);font-size:12px;font-weight:600;cursor:pointer;text-align:center;transition:all .15s;}
.rb.active{background:var(--al);border-color:var(--a);color:var(--a);}
.exp-list{display:flex;flex-direction:column;gap:10px;}
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:400;display:flex;align-items:center;justify-content:center;padding:20px;}
.modal{background:var(--w);border-radius:16px;width:100%;max-width:400px;max-height:80vh;overflow:hidden;display:flex;flex-direction:column;}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--bd2);}
.modal-body{padding:16px;}
.exp-btn{width:100%;padding:14px;border-radius:var(--r);font-size:14px;font-weight:600;cursor:pointer;border:none;display:flex;align-items:center;justify-content:flex-start;gap:10px;transition:all .15s;}
.exp-btn.p{background:var(--a);color:#fff;}
.exp-btn.p:active{background:var(--a2);}
.exp-btn.s{background:var(--bg);color:var(--t2);border:1.5px solid var(--bd);}
.exp-btn.s:active{border-color:var(--a);color:var(--a);}

/* ── TOAST ── */
.toast{position:fixed;bottom:calc(var(--tab) + var(--safe-b) + 12px);left:50%;transform:translateX(-50%) translateY(8px);background:#1a1d2e;color:#fff;padding:10px 20px;border-radius:30px;font-size:13px;font-weight:500;z-index:500;opacity:0;transition:all .25s;pointer-events:none;white-space:nowrap;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ── MISC ── */
.section-tip{font-size:11px;color:var(--t3);margin-top:4px;line-height:1.5;}

/* ── LANG SWITCHER ── */
.lang-switcher{display:flex;align-items:center;gap:4px;padding:4px 8px;border-radius:16px;background:var(--bg);cursor:pointer;border:1px solid var(--bd);font-size:12px;font-weight:600;color:var(--t2);transition:all .15s;}
.lang-switcher:hover{border-color:var(--a);color:var(--a);}
.lang-flag{font-size:16px;line-height:1;}

/* ── PC INTERACTION ── */
@media (hover:hover){
  .btn-ghost:hover,.btn-solid:hover{transform:scale(1.02);}
  .ec-btn:hover,.rb:hover{background:var(--al);border-color:var(--a);color:var(--a);}
  .tpl-card:hover,.sc:hover,.ec2:hover{transform:scale(1.03);box-shadow:0 4px 16px rgba(78,110,242,.15);}
  .tab:hover .tab-icon{background:var(--al);}
  .tab:hover .tab-icon svg{fill:var(--a);}
  .tab:hover .tab-label{color:var(--a);}
  .exp-btn:hover.p{background:var(--a2);}
  .exp-btn:hover.s{border-color:var(--a);color:var(--a);}
  .seg-item:hover:not(.active){background:rgba(78,110,242,.08);}
  .inp:hover,.sel:hover,.txa:hover{border-color:var(--a2);}
  #hist-list>div:hover{background:var(--al);cursor:pointer;}
}

/* ── PC COMPATIBILITY ── */
@media (min-width:768px){
  body{overflow:auto;}
  .topnav{position:absolute;}
  .tabbar{position:absolute;height:var(--tab);padding-bottom:0;border-top:none;left:0;right:0;}
  .page{max-width:480px;margin:0 auto;min-height:calc(100vh - var(--nav) - var(--tab));padding:20px 16px;}
  .page.active{display:block;}
  .qr-card{max-width:400px;margin:16px auto 0;}
  .qr-wrap{max-width:320px;}
  .toast{bottom:calc(var(--tab) + 12px);}
  .sheet{max-width:480px;left:50%;transform:translateX(-50%) translateY(100%);border-radius:20px 20px 0 0;}
  .sheet.open{transform:translateX(-50%) translateY(0);}
  .scan-cam-box{min-height:500px;}
}
@media (min-width:1024px){
  body{overflow:auto;}
  .topnav{
    position:fixed;top:0;left:0;right:0;
    height:60px;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 24px;
    background:rgba(255,255,255,0.98);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--bd);
    z-index:300;
  }
  .tabbar{
    position:fixed;
    top:60px;left:0;bottom:0;
    width:200px;
    height:auto;
    padding:16px 12px;
    border-top:none;
    border-right:1px solid var(--bd);
    background:rgba(255,255,255,0.98);
    backdrop-filter:blur(12px);
    flex-direction:column;
    gap:4px;
    z-index:200;
  }
  .tab{
    flex-direction:row;
    padding:12px 16px;
    border-radius:10px;
    gap:12px;
  }
  .tab-icon{width:22px;height:22px;}
  .tab-icon svg{width:18px;height:18px;}
  .tab-label{font-size:13px;text-align:left;}
  .tab.active{background:var(--al);}
  .page{
    width:calc(100% - 200px);
    max-width:none;
    margin:60px 0 0 200px;
    padding:24px;
    display:none;
    height:calc(100vh - 60px);
    overflow-y:auto;
  }
  .page.active{display:block;float:none;}
  .page::-webkit-scrollbar{width:6px;}
  .page::-webkit-scrollbar-thumb{background:var(--bd2);border-radius:3px;}
  .preview-page,.content-page,.style-page{padding:0;}
  .qr-card{margin:0 auto;max-width:360px;}
  .scan-cam-box{min-height:600px;max-width:680px;margin:0 auto;}
  .scan-cam-box video{object-fit:contain;}
  .scan-frame{width:50%;height:55%;}
  .cam-controls{bottom:20px;gap:12px;}
  .cam-btn{padding:12px 24px;font-size:14px;border-radius:24px;}
  .scan-corner{width:32px;height:32px;}
  .scan-placeholder-icon{width:80px;height:80px;}
  .qr-wrap{max-width:300px;}
  .sheet{
    position:fixed;
    left:auto;right:24px;top:72px;
    max-width:400px;
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    transition:all .25s ease;
  }
  .sheet.open{transform:translateY(0);opacity:1;visibility:visible;}
  .toast{left:auto;right:24px;bottom:24px;transform:none;}
  .toast.show{transform:none;}
  .float-preview{bottom:auto;top:80px;right:240px;}
}

/* ──────────────────────
   PAGE 4: 批量生成
────────────────────── */
.batch-step{display:flex;align-items:center;gap:5px;padding:6px 10px;border-radius:16px;font-size:11px;color:var(--t3);background:var(--bg);transition:all .2s;}
.batch-step span{width:20px;height:20px;border-radius:50%;background:var(--bd2);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--t3);}
.batch-step em{font-style:normal;font-weight:500;}
.batch-step.active{background:var(--al);color:var(--a);}
.batch-step.active span{background:var(--a);color:#fff;}
.batch-step-line{flex:1;height:2px;background:var(--bd);border-radius:1px;margin:0 4px;}

@keyframes spin{to{transform:rotate(360deg)}}

.batch-preview-item{background:var(--w);border-radius:8px;padding:8px;text-align:center;border:1px solid var(--bd);transition:border-color .15s;position:relative;}
.batch-preview-item:hover{border-color:var(--a);}
.batch-preview-item .canvas-wrapper{width:100%;padding-top:100%;position:relative;border-radius:4px;background:#fff;}
.batch-preview-item canvas{position:absolute;top:0;left:0;width:100%;height:100%;border-radius:4px;object-fit:contain;}
.batch-preview-item .bp-label{font-size:9px;color:var(--t3);margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.3;max-height:24px;}

.paper-opt{padding:10px 8px;border:1.5px solid var(--bd);border-radius:var(--rsm);cursor:pointer;text-align:center;transition:all .15s;background:var(--w);}
.paper-opt.active{border-color:var(--a);background:var(--al);}
.paper-opt-name{font-size:11px;color:var(--t2);font-weight:500;margin-top:3px;}
.paper-opt-size{font-size:9px;color:var(--t3);}