:root{--bg:#f3f2f8;--panel:#fff;--ink:#28242f;--muted:#837c90;--accent:#6741d9;--line:#e3dfec;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--safe-x:env(safe-area-inset-left,0px)}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);margin:0;font-family:system-ui,-apple-system,PingFang SC,Segoe UI,sans-serif;overflow-x:hidden}#app-root{flex-direction:column;min-height:100dvh;display:flex}header{padding:14px 22px;padding-top:max(14px, var(--safe-top));background:var(--panel);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;display:flex}.brand{min-width:0}.brand h1{color:var(--accent);margin:0;font-size:20px;display:inline}.tagline{color:var(--muted);margin-left:12px;font-size:12.5px}.actions{flex-shrink:0;align-items:center;gap:10px;display:flex}.lang-select{border:1px solid var(--line);background:var(--panel);cursor:pointer;border-radius:10px;align-items:center;gap:4px;padding:6px 10px;font-size:13px;display:inline-flex}.lang-select:hover{border-color:var(--accent)}.lang-select .lang-globe{font-size:14px;line-height:1}.lang-select select{color:var(--ink);font:inherit;cursor:pointer;background:0 0;border:none;outline:none;padding:0 2px}.lang-select select:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.btn{border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer;white-space:nowrap;border-radius:10px;padding:8px 16px;font-size:13.5px}.btn:hover{border-color:var(--accent);color:var(--accent)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{color:#fff;filter:brightness(1.08)}.btn-primary:disabled{opacity:.5;cursor:default}.params{background:var(--panel);border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:10px 26px;padding:10px 22px;display:flex}.param{color:var(--muted);flex-direction:column;gap:2px;font-size:12px;display:flex}.param b{color:var(--ink)}.param input[type=range]{width:150px;accent-color:var(--accent)}main{flex:1;grid-template-columns:1fr 1fr;align-items:start;gap:18px;padding:18px 22px;display:grid}.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px}.panel h2{margin:0 0 12px;font-size:14px}.panel h2 em{color:var(--accent);font-style:normal;font-weight:600}.preview-wrap{border:1px solid var(--line);border-radius:10px;max-width:420px;margin:0 auto;overflow:hidden}.preview-wrap canvas,.preview-wrap svg{width:100%;height:auto;display:block}.checker{background:conic-gradient(#e7e3ef 25%, #f8f6fb 0 50%, #e7e3ef 0 75%, #f8f6fb 0) 0 0 / 18px 18px}.meta{color:var(--muted);margin:10px 0 0;font-size:12.5px}.hint{color:var(--muted);margin:8px 0 0;font-size:12px}.palette-row{align-items:center;gap:10px;margin-top:12px;display:flex}.palette-label{color:var(--muted);flex-shrink:0;font-size:12px}.palette{flex:1;gap:3px;height:22px;display:flex}.swatch{cursor:pointer;color:#fff;text-shadow:0 0 3px #000000b3;border:1px solid #0000001f;border-radius:5px;min-width:14px;padding:0;font-size:11px}.result-actions{gap:10px;margin-top:12px;display:flex}.btn-download{cursor:pointer;color:var(--ink);background:#f1eef8;border:none;border-radius:8px;flex:1;padding:8px 0;font-size:12.5px}.btn-download:hover{background:var(--accent);color:#fff}@media (width<=980px){main{grid-template-columns:1fr}}@media (width<=640px){header{padding:12px 14px;padding-top:max(12px, var(--safe-top));flex-wrap:wrap;gap:10px}.brand{flex:100%}.brand h1{font-size:18px}.tagline{display:none}.actions{flex:100%;gap:8px}.actions .btn{flex:1 1 0;min-width:0}.actions .lang-select{flex:none}.btn{padding:9px 10px;font-size:13px}.lang-select{padding:8px 10px}.params{grid-template-columns:repeat(2,1fr);gap:12px 14px;padding:12px 14px;display:grid}.param input[type=range]{width:100%}main{padding:12px 14px;padding-bottom:max(12px, var(--safe-bottom));gap:12px}.panel{border-radius:12px;padding:12px}.panel h2{font-size:13.5px}.hint{font-size:11.5px}.swatch{min-height:26px}.btn-download{padding:9px 0;font-size:12px}}@media (width<=380px){.params{grid-template-columns:1fr}.actions .btn{white-space:normal}}@media (width<=980px) and (orientation:landscape) and (height<=500px){header{padding-top:6px;padding-bottom:6px}.panel{padding:10px}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}