:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--bg:#f3f5f7;--surface:#fff;--surface-soft:#f8fafc;--text:#111827;--muted:#667085;--border:#d9dee7;--accent:#2563eb;--accent-strong:#1d4ed8;--success:#0f766e;--shadow:0 12px 34px #0f172a14}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#0e1117;--surface:#151922;--surface-soft:#10141c;--text:#eef2f7;--muted:#a4adbb;--border:#2a3140;--accent:#60a5fa;--accent-strong:#93c5fd;--success:#5eead4;--shadow:0 18px 42px #00000047}}*{box-sizing:border-box}html,body{min-height:100%}body{background:var(--bg);color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,textarea{font:inherit}button{border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:8px;min-height:34px;padding:0 12px;font-size:13px;font-weight:650}button:hover{border-color:var(--accent);color:var(--accent-strong)}button:disabled{cursor:not-allowed;opacity:.6}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.primary:hover{background:var(--accent-strong);color:#fff}.app-shell{grid-template-rows:auto minmax(0,1fr) minmax(220px,30vh) auto;gap:14px;min-height:100vh;padding:16px;display:grid}.drop-overlay{z-index:50;pointer-events:none;background:#0f172a38;place-items:center;padding:24px;display:none;position:fixed;inset:0}.drop-overlay.visible{display:grid}.drop-overlay div{border:1px solid var(--accent);background:var(--surface);min-width:min(420px,86vw);box-shadow:var(--shadow);text-align:center;border-radius:8px;padding:22px 24px}.drop-overlay strong,.drop-overlay span{display:block}.drop-overlay strong{color:var(--text);font-size:18px;line-height:1.3}.drop-overlay span{color:var(--muted);margin-top:8px;font-size:13px}.topbar,.statusbar,.panel{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:8px}.topbar{grid-template-columns:minmax(280px,.9fr) minmax(480px,2fr);align-items:center;gap:16px;padding:14px;display:grid}.brand{align-items:center;gap:12px;min-width:0;display:flex}.brand-mark{color:#fff;background:#111827;border-radius:8px;place-items:center;width:40px;height:40px;font-size:20px;font-weight:800;display:grid}.brand h1,.panel-head h2{color:var(--text);margin:0}.brand h1{font-size:18px;line-height:1.2}.brand p,.panel-head p{color:var(--muted);margin:4px 0 0;font-size:12px;line-height:1.4}.topbar-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.file-input{clip:rect(0 0 0 0);white-space:nowrap;clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}.strict-toggle{border:1px solid var(--border);background:var(--surface);min-height:34px;color:var(--text);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:8px;align-items:center;gap:7px;padding:0 10px;font-size:13px;font-weight:650;display:inline-flex}.strict-toggle input{width:14px;height:14px;accent-color:var(--accent)}.strict-toggle:has(input:checked){border-color:var(--accent);background:color-mix(in srgb, var(--accent) 12%, var(--surface));color:var(--accent-strong)}.template-selector{border-right:1px solid var(--border);flex-wrap:wrap;gap:6px;padding-right:6px;display:flex}.template-selector button.selected,.segmented button.active{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 12%, var(--surface));color:var(--accent-strong)}.workspace{grid-template-columns:minmax(320px,1fr) minmax(360px,1fr);gap:14px;min-height:0;display:grid}.panel{flex-direction:column;min-width:0;min-height:0;display:flex;overflow:hidden}.panel-head{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;min-height:58px;padding:12px 14px;display:flex}.panel-head h2{font-size:14px;line-height:1.2}.segmented{border:1px solid var(--border);background:var(--surface-soft);border-radius:8px;gap:4px;padding:3px;display:inline-flex}.segmented button{background:0 0;border:0;min-height:28px;padding:0 9px}.editor-panel textarea{resize:none;width:100%;min-height:360px;color:var(--text);background:linear-gradient(var(--surface) 31px, transparent 31px) 0 0 / 100% 32px, var(--surface);tab-size:2;border:0;outline:0;flex:1;padding:16px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:14px;line-height:32px}.preview-panel{background:var(--surface-soft)}.preview-shell{flex:1;padding:22px;overflow:auto}.wechat-preview{color:#333;background:#fff;border:1px solid #e5e7eb;border-radius:8px;width:min(100%,680px);min-height:100%;margin:0 auto;padding:28px 24px}.wechat-preview section{max-width:100%}.output-panel pre{background:var(--surface-soft);color:var(--text);white-space:pre-wrap;word-break:break-word;flex:1;margin:0;padding:14px 16px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;font-size:12px;line-height:1.65;overflow:auto}.statusbar{color:var(--muted);box-shadow:none;justify-content:space-between;gap:12px;padding:9px 12px;font-size:12px;display:flex}@media (max-width:1120px){.topbar{grid-template-columns:1fr}.topbar-actions{justify-content:flex-start}}@media (max-width:860px){.app-shell{grid-template-rows:auto auto minmax(240px,34vh) auto;padding:10px}.workspace{grid-template-columns:1fr}.topbar-actions,.template-selector{width:100%}.template-selector{border-right:0;padding-right:0}.topbar-actions button{flex:auto}.preview-shell{padding:12px}.wechat-preview{padding:20px 16px}.statusbar{flex-direction:column}}