:root{--bg:#f3f4f5;--surface:#fff;--sunken:#f7f8f9;--line:#e7e9eb;--line-strong:#d4d8db;--ink:#16181a;--ink-2:#555b61;--ink-3:#6b7076;--danger:#b3261e;--accent:#0b7a55;--accent-dark:#08603f;--accent-soft:#e9f4ef;--accent-line:#b9dccd;--radius:16px;--radius-sm:9px;--shadow:0 1px 2px #1012140a, 0 10px 30px -14px #10121433;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-serif:"Songti SC", "SimSun", Georgia, "Times New Roman", serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background-color:var(--bg);color:var(--ink);font:14px/1.6 var(--font-sans);-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 1px 1px,#16181a14 1px,#0000 0);background-size:22px 22px}.shell{max-width:1120px;margin:0 auto;padding:48px 28px 72px}.masthead{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px;margin-bottom:22px;display:flex}.brand{align-items:center;gap:15px;min-width:0;display:flex}.brand .mark{color:#fff;background:var(--accent);border-radius:13px;flex:none;justify-content:center;align-items:center;width:44px;height:44px;display:flex;box-shadow:0 8px 20px -8px #0b7a55a6}.brand .mark svg{width:24px;height:24px}.brand h1{font:400 29px/1.2 var(--font-serif);letter-spacing:.04em;margin:0 0 3px}.brand p{color:var(--ink-2);margin:0;font-size:12.5px}.tabs{background:#e8eaec;border-radius:11px;gap:3px;padding:3px;display:inline-flex}.tab{height:32px;color:var(--ink-2);border-radius:var(--radius-sm);background:0 0;border:0;align-items:center;gap:7px;padding:0 16px;display:inline-flex}.tab:hover{color:var(--ink);background:0 0;border:0}.tab.active{color:var(--accent);background:var(--surface);box-shadow:0 1px 3px #1012141f}.tab svg{width:14px;height:14px}.workspace{--panel-h:clamp(420px, calc(100vh - 280px), 520px);--preview-h:calc(var(--panel-h) - 226px);grid-template-columns:minmax(0,1fr) 368px;align-items:stretch;gap:20px;display:grid}.editor,.side{height:var(--panel-h);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.editor{flex-direction:column;padding:22px 22px 16px;transition:border-color .18s,box-shadow .18s;display:flex;position:relative;overflow:hidden}.editor:focus-within{border-color:var(--accent-line);box-shadow:0 0 0 4px var(--accent-soft), var(--shadow)}.editor-watermark{width:230px;height:230px;color:var(--accent);opacity:.07;pointer-events:none;position:absolute;bottom:-26px;right:-30px}.editor-label,.editor-input,.foot{position:relative}.editor-label{color:var(--ink-2);align-items:center;gap:8px;margin:0 0 14px;font-size:12px;display:flex}.format-tag{height:20px;color:var(--ink-2);background:var(--sunken);border:1px solid var(--line);font-family:var(--font-mono);border-radius:5px;padding:0 7px;font-size:11px}.editor-label .format-tag:hover:not(:disabled){color:var(--accent);background:var(--accent-soft);border-color:var(--accent-line)}.editor-label .format-tag.is-invalid{color:var(--danger);background:#fdf1f0;border-color:#efc9c6}.editor-label .clear-btn{height:20px;color:var(--ink-3);background:0 0;border:0;margin-left:auto;padding:0 6px;font-size:11.5px;transition:color .15s}.editor-label .clear-btn:hover:not(:disabled){color:var(--danger);background:0 0;border:0}.editor .editor-input{width:100%;color:var(--ink);font:inherit;background:0 0;border:0;border-radius:0;outline:none;padding:0;font-size:15px;line-height:1.75}.editor input.editor-input{flex:none;height:auto}.editor textarea.editor-input{resize:none;flex:auto;min-height:0}.editor .editor-input::placeholder{color:var(--ink-3)}.editor .editor-input:focus{box-shadow:none;border:0}.foot{border-top:1px solid var(--line);color:var(--ink-3);align-items:baseline;gap:12px;margin-top:auto;padding-top:14px;font-size:12px;display:flex}.foot>:first-child{flex:1;min-width:0}.foot>:last-child{font-variant-numeric:tabular-nums;flex:none}.foot .err{color:var(--danger)}.side{padding:22px 22px 16px;overflow-y:auto}.preview{height:var(--preview-h);background:var(--sunken);border:1px solid var(--line);border-radius:12px;justify-content:center;align-items:center;padding:10px;display:flex;overflow:hidden}.preview canvas,.preview svg{width:auto;max-width:100%;height:auto;max-height:100%;display:block}.qr-holder{line-height:0}.preview .is-hidden{display:none}@keyframes codeIn{0%{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}.preview canvas:not(.is-hidden),.preview .qr-holder:not(.is-hidden){animation:.22s ease-out codeIn}.preview-empty{color:var(--ink-3);flex-direction:column;align-items:center;gap:16px;display:flex}.preview-empty svg{width:76px;height:76px;color:var(--accent);opacity:.4}.preview-empty span{font-size:12.5px}.preview-meta{color:var(--ink-3);text-align:center;font-variant-numeric:tabular-nums;margin:8px 0 0;font-size:11.5px}.dl{gap:9px;margin-top:14px;display:grid}.dl .row{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.dl .row button{padding:0 8px;font-size:12px}details.group{border-top:1px solid var(--line);margin-top:20px;padding-top:18px}details.group>summary{color:var(--ink-2);cursor:pointer;-webkit-user-select:none;user-select:none;justify-content:space-between;align-items:center;gap:8px;font-size:12px;list-style:none;display:flex}details.group>summary::-webkit-details-marker{display:none}details.group>summary:hover{color:var(--accent)}details.group>summary:after{content:"";border-bottom:1.5px solid;border-right:1.5px solid;flex:none;width:7px;height:7px;margin-bottom:3px;transition:transform .15s;transform:rotate(45deg)}details.group[open]>summary:after{margin-bottom:-3px;transform:rotate(-135deg)}details.group>.fields{margin-top:16px}.fields{grid-template-columns:1fr 1fr;gap:13px;display:grid}.field{flex-direction:column;gap:6px;min-width:0;display:flex}.field.wide{grid-column:1/-1}.field>label{color:var(--ink-2);font-size:12px}.side input[type=text],.side input[type=number],.side select,.side textarea{width:100%;height:34px;color:var(--ink);background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius-sm);font:inherit;outline:none;padding:0 10px;font-size:13px;transition:border-color .15s,box-shadow .15s}.side textarea{resize:vertical;height:auto;min-height:70px;padding:8px 10px;line-height:1.55}.side input[type=text]:focus,.side input[type=number]:focus,.side select:focus,.side textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.side input:disabled,.side select:disabled{color:var(--ink-3);background:var(--sunken);border-color:var(--line);cursor:not-allowed}.side select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23666c72' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;padding-right:28px}.side select:disabled{background-image:none}.side input[type=file]{min-width:0;color:var(--ink-2);font-size:12px}.side input[type=file]::file-selector-button{height:30px;color:var(--ink);background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius-sm);font:inherit;cursor:pointer;margin-right:8px;padding:0 10px;font-size:12px}.color-row{align-items:center;gap:6px;display:flex}.color-row input[type=color]{background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius-sm);cursor:pointer;flex:0 0 34px;width:34px;height:34px;padding:3px}.color-row input[type=color]::-webkit-color-swatch-wrapper{padding:0}.color-row input[type=color]::-webkit-color-swatch{border:0;border-radius:4px}.color-row input[type=color]::-moz-color-swatch{border:0;border-radius:4px}.color-row .hex{min-width:0;font-family:var(--font-mono);flex:1;font-size:11.5px}.color-row input[type=color]:disabled{opacity:.45;cursor:not-allowed}.logo-row{align-items:center;gap:8px;display:flex}.logo-row input[type=file]{flex:1}.logo-row button{flex:none}.check{color:var(--ink-2);cursor:pointer;align-items:center;gap:8px;font-size:12.5px;display:flex}.check.wide{grid-column:1/-1}.check input{width:15px;height:15px;accent-color:var(--accent);margin:0}.notice{color:var(--danger);margin:12px 0 0;font-size:12px;line-height:1.55}button{height:36px;color:var(--ink);background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius-sm);font:inherit;cursor:pointer;padding:0 14px;font-size:13px;transition:background .15s,border-color .15s,color .15s,transform 60ms}button:hover:not(:disabled){border-color:var(--ink-3);background:#f4f5f6}button:active:not(:disabled){transform:translateY(1px)}button:disabled{color:var(--ink-3);border-color:var(--line);cursor:not-allowed;background:0 0}button.primary{color:#fff;background:var(--accent);border-color:var(--accent);box-shadow:0 8px 18px -10px #0b7a55d9}button.primary:hover:not(:disabled){background:var(--accent-dark);border-color:var(--accent-dark)}button.primary:disabled{color:var(--ink-3);border-color:var(--line);box-shadow:none;background:0 0}footer{color:var(--ink-3);align-items:center;gap:10px;margin-top:44px;font-size:12px;display:flex}footer .gh{color:var(--ink-3);transition:color .15s;display:inline-flex}footer .gh:hover{color:var(--accent)}@media (prefers-reduced-motion:reduce){*{transition-duration:.01ms!important;animation-duration:.01ms!important}}@media (width<=900px){.workspace{grid-template-columns:minmax(0,1fr)}.editor,.side{height:auto}.editor{min-height:260px}.preview{height:auto;min-height:220px}}