:root {
  --bg:#eef3f6; --surface:#fff; --soft:#f7f9fb; --text:#142033; --muted:#66758a;
  --border:#d9e2ea; --primary:#285d87; --primary-dark:#1d4667; --primary-soft:#e8f1f8;
  --thermal:#197059; --thermal-dark:#105947; --danger:#a74646; --warning:#8b6114;
  --shadow:0 14px 38px rgba(26,48,72,.08); --radius:18px;
}
*{box-sizing:border-box} html{color-scheme:light} body{margin:0;min-width:320px;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--text);background:radial-gradient(circle at 100% 0,rgba(40,93,135,.12),transparent 32rem),var(--bg)}
button,input,textarea,select{font:inherit} button{cursor:pointer} button:disabled{cursor:not-allowed;opacity:.48}.container{width:min(1180px,calc(100% - 32px));margin-inline:auto}
.site-header{padding:42px 0 28px}.header-inner{display:flex;justify-content:space-between;align-items:flex-end;gap:24px}.eyebrow{margin:0 0 8px;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.16em}h1,h2,h3,p{margin-top:0}h1{margin-bottom:9px;font-size:clamp(30px,5vw,48px);line-height:1.07;letter-spacing:-.04em}.subtitle{margin:0;color:var(--muted);font-size:17px}.privacy-badge,.local-chip{display:inline-flex;align-items:center;gap:9px;padding:9px 13px;border:1px solid #b7d7ca;border-radius:999px;color:var(--thermal);background:#eff8f4;font-size:12px;font-weight:800}.privacy-badge span{width:8px;height:8px;border-radius:50%;background:currentColor;box-shadow:0 0 0 4px rgba(25,112,89,.12)}
.main-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,.8fr);gap:22px;align-items:start}.panel{border:1px solid rgba(213,224,233,.95);border-radius:var(--radius);background:rgba(255,255,255,.96);box-shadow:var(--shadow)}.input-panel,.settings-panel,.print-panel,.results-panel,.history-panel{padding:25px}.print-panel,.results-panel,.history-panel{grid-column:1/-1}
.section-heading,.results-header{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:20px}.section-heading>div,.results-header>div:first-child{display:flex;align-items:center;gap:10px}.step{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:var(--primary);background:var(--primary-soft);font-size:12px;font-weight:850}h2{margin:0;font-size:20px}.field-label,.text-setting>span,.number-setting>span{display:block;margin-bottom:8px;color:var(--muted);font-size:13px;font-weight:750}
textarea,input[type=text],input[type=number],select{width:100%;border:1px solid var(--border);border-radius:11px;color:var(--text);background:var(--soft);outline:none;transition:.18s}textarea{min-height:265px;padding:15px;resize:vertical;line-height:1.65}input[type=text],input[type=number],select{padding:10px 11px}textarea:focus,input:focus,select:focus{border-color:#7e9eb8;background:#fff;box-shadow:0 0 0 4px rgba(40,93,135,.1)}.input-meta{display:flex;justify-content:space-between;gap:12px;margin:9px 2px 0;color:var(--muted);font-size:12px}.notice{margin-top:15px;padding:12px 14px;border:1px solid #edcf91;border-radius:11px;color:var(--warning);background:#fff8e8;font-size:13px;line-height:1.55}.hidden{display:none!important}
.button-row,.result-actions{display:flex;flex-wrap:wrap;gap:9px}.button-row{margin-top:19px}.button,.text-button{border:0;border-radius:10px;font-weight:800;transition:transform .16s ease,background .16s ease}.button{padding:11px 17px}.button.small{padding:9px 12px;font-size:13px}.button.primary{color:#fff;background:var(--primary);box-shadow:0 7px 18px rgba(40,93,135,.18)}.button.primary:hover:not(:disabled){transform:translateY(-1px);background:var(--primary-dark)}.button.secondary{border:1px solid var(--border);color:var(--text);background:#fff}.button.secondary:hover:not(:disabled){transform:translateY(-1px);background:var(--soft)}.button.thermal{color:#fff;background:var(--thermal);box-shadow:0 7px 18px rgba(25,112,89,.18)}.button.thermal:hover:not(:disabled){background:var(--thermal-dark)}.text-button{padding:7px 9px;color:var(--primary);background:transparent}.text-button:hover{background:var(--primary-soft)}
.mode-fieldset{margin:0 0 20px;padding:0;border:0}.mode-fieldset legend{margin-bottom:8px;color:var(--muted);font-size:13px;font-weight:750}.mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:5px;border-radius:12px;background:var(--soft)}.mode-option input{position:absolute;opacity:0}.mode-option span{display:block;padding:10px 8px;border-radius:8px;text-align:center;color:var(--muted);font-size:13px;font-weight:800}.mode-option input:checked+span{color:var(--primary);background:#fff;box-shadow:0 3px 10px rgba(20,32,51,.08)}
.settings-grid,.settings-group{display:grid;gap:17px}.setting-item{display:grid;grid-template-columns:1fr 50px;gap:7px 11px;align-items:center}.setting-item>span{grid-column:1/-1;color:var(--muted);font-size:13px;font-weight:750}.setting-item input[type=range]{width:100%;accent-color:var(--primary)}.setting-item output{justify-self:end;min-width:44px;padding:4px 7px;border-radius:7px;color:var(--primary);background:var(--primary-soft);text-align:center;font-size:12px;font-weight:850}.featured-setting{padding:13px;border:1px solid #c7dce9;border-radius:12px;background:#f5fafe}.switch-row{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;font-weight:750}.switch-row input{position:absolute;opacity:0}.switch{position:relative;width:42px;height:23px;border-radius:99px;background:#c7d1dc}.switch:after{content:"";position:absolute;top:3px;left:3px;width:17px;height:17px;border-radius:50%;background:#fff;box-shadow:0 2px 5px rgba(20,32,51,.2);transition:.18s}.switch-row input:checked+.switch{background:var(--primary)}.switch-row input:checked+.switch:after{transform:translateX(19px)}.format-card{margin-top:20px;padding:14px;border-radius:12px;background:var(--soft)}.format-card>div{display:flex;justify-content:space-between;gap:10px}.format-card span{color:var(--muted);font-size:12px}.format-card strong{color:var(--primary);font-size:13px}.format-card p{margin:8px 0 0;color:var(--muted);font-size:12px;line-height:1.55}
.print-settings-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:14px}.thermal-tip{margin-top:15px;padding:13px 15px;border-left:4px solid var(--thermal);border-radius:9px;color:#3f5f55;background:#f0f8f5;font-size:13px;line-height:1.6}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:11px;margin-bottom:20px}.stats>div{display:flex;align-items:baseline;gap:8px;padding:12px 14px;border:1px solid var(--border);border-radius:11px;background:var(--soft)}.stats strong{font-size:22px}.stats span{color:var(--muted);font-size:12px}.empty-state{display:grid;place-items:center;padding:60px 20px;border:1px dashed #c6d2dd;border-radius:14px;color:var(--muted);text-align:center;background:#fbfcfd}.empty-icon{margin-bottom:9px;color:#849db2;font-size:43px}.empty-state h3{margin-bottom:5px;color:var(--text)}.empty-state p{margin:0}.code-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.code-card{overflow:hidden;border:1px solid var(--border);border-radius:13px;background:#fff}.card-topline{display:flex;justify-content:space-between;align-items:center;gap:9px;padding:11px 13px;border-bottom:1px solid #edf1f4;background:#fbfcfd}.card-index{color:var(--muted);font-size:12px;font-weight:850}.badges{display:flex;gap:5px}.badge{padding:4px 7px;border-radius:99px;font-size:10px;font-weight:850}.badge.type{color:var(--primary);background:var(--primary-soft)}.badge.duplicate{color:#76540f;background:#fff2cd}.badge.error{color:var(--danger);background:#fbecec}.code-stage{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:170px;padding:16px;overflow:auto}.code-stage svg{display:block;max-width:100%;height:auto}.qr-canvas{display:block;max-width:100%;height:auto;image-rendering:pixelated}.under-code-label{max-width:100%;margin-top:7px;text-align:center;overflow-wrap:anywhere;line-height:1.15;color:#000}.card-footer{padding:0 13px 13px}.raw-value{margin:0 0 10px;color:var(--muted);font-size:11px;line-height:1.45;overflow-wrap:anywhere}.error-message{margin:0 0 10px;color:var(--danger);font-size:12px}.download-one{width:100%;padding:9px;border:1px solid var(--border);border-radius:9px;color:var(--primary);background:#fff;font-size:12px;font-weight:850}.download-one:hover{background:var(--primary-soft)}
.history-note{margin:-8px 0 16px;color:var(--muted);font-size:12px}.history-empty{padding:30px;border:1px dashed var(--border);border-radius:12px;color:var(--muted);text-align:center}.history-list{display:grid;gap:10px}.history-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:15px;padding:14px;border:1px solid var(--border);border-radius:12px;background:var(--soft)}.history-main{min-width:0}.history-title{display:flex;align-items:center;flex-wrap:wrap;gap:7px;margin-bottom:6px}.history-title strong{font-size:14px}.history-time{color:var(--muted);font-size:12px}.history-preview{margin:0;color:var(--muted);font-size:12px;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-actions{display:flex;align-items:center;gap:7px}.mini-button{padding:7px 9px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--primary);font-size:12px;font-weight:800}.mini-button.danger{color:var(--danger)}
.toast{position:fixed;right:20px;bottom:20px;z-index:40;max-width:min(360px,calc(100vw - 40px));padding:12px 15px;border-radius:10px;color:#fff;background:rgba(20,32,51,.94);box-shadow:0 12px 30px rgba(20,32,51,.22);opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s;font-size:13px}.toast.show{opacity:1;transform:none}.site-footer{padding:28px 0 36px;color:var(--muted);text-align:center;font-size:12px}
@media(max-width:850px){.header-inner{align-items:flex-start;flex-direction:column}.main-layout{grid-template-columns:1fr}.print-panel,.results-panel,.history-panel{grid-column:1}.print-settings-grid{grid-template-columns:1fr 1fr}.results-header{align-items:flex-start;flex-direction:column}.result-actions{width:100%}.result-actions .button{flex:1 1 130px}}
@media(max-width:560px){.container{width:calc(100% - 20px)}.site-header{padding-top:27px}.input-panel,.settings-panel,.print-panel,.results-panel,.history-panel{padding:17px}.input-meta{flex-direction:column;gap:4px}.print-settings-grid,.stats{grid-template-columns:1fr}.button-row .button{flex:1}.history-item{grid-template-columns:1fr}.history-actions{justify-content:flex-end}}