:root{--bg-main: #0d1117;--bg-panel: #161b22;--border-color: #30363d;--text-main: #c9d1d9;--text-muted: #8b949e;--primary: #2f81f7;--primary-hover: #58a6ff;--shadow-sm: 0 4px 12px rgba(0, 0, 0, .4);--shadow-md: 0 8px 24px rgba(0, 0, 0, .6);--radius: 8px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--header-height: 56px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-main);color:var(--text-main);line-height:1.6;transition:background-color .3s,color .3s;height:100vh;display:flex;flex-direction:column;overflow-y:auto}.app-header{height:var(--header-height);background-color:var(--bg-panel);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 24px;flex-shrink:0;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.header-left{display:flex;align-items:center;gap:12px}.logo-img{height:24px}.app-title{font-size:16px;font-weight:600;margin:0}.header-right{display:flex;align-items:center;gap:16px}.help-link{color:var(--text-muted);text-decoration:none;font-size:13px;padding:4px 10px;border-radius:4px;transition:all .2s}.help-link:hover{color:var(--primary);background:var(--bg-hover)}.icon-btn{background:transparent;border:none;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:6px;transition:all .2s}.icon-btn:hover{background-color:#9093991a;color:var(--text-main)}.lang-switch{font-weight:600;font-size:13px}.lang-switch .lang-link{color:var(--text-muted);text-decoration:none;transition:color .2s}.lang-switch .lang-link:hover{color:var(--text-main)}.main-layout{flex:1;display:flex;flex-direction:column;padding:16px 20px 20px;width:100%;overflow-y:auto}.generator-container{display:flex;gap:20px;min-height:calc(100vh - var(--header-height) - 52px);align-items:stretch}.config-panel,.preview-panel{background:var(--bg-panel);border-radius:var(--radius);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;overflow:hidden}.config-panel{width:450px;flex-shrink:0}.preview-panel{flex:1;min-width:0}.config-tabs,.preview-tabs{display:flex;border-bottom:1px solid var(--border-color);background:#90939905}.tab-btn{flex:1;background:transparent;border:none;border-bottom:2px solid transparent;padding:14px 0;font-size:14px;font-weight:500;color:var(--text-muted);cursor:pointer;transition:all .2s}.tab-btn:hover{color:var(--text-main)}.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}.config-content{flex:1;overflow-y:auto;position:relative}.preview-content{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative}.tab-pane{display:none;padding:16px;animation:fadeIn .3s ease}.tab-pane.active{display:block}#panel-preview.tab-pane.active{display:flex;flex-direction:column;flex:1;height:100%;padding:12px}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}.form-group{margin-bottom:20px}.form-label{display:flex;align-items:center;justify-content:space-between;font-size:13px;font-weight:500;margin-bottom:8px;color:var(--text-main)}.tool-link{font-size:11px;font-weight:400;color:var(--primary);text-decoration:none;padding:1px 6px;border-radius:3px;border:1px solid var(--primary);opacity:.8;transition:all .2s;white-space:nowrap}.tool-link:hover{opacity:1;background:var(--primary);color:#fff}.tool-link{background:var(--primary);color:#fff;border-color:var(--primary);opacity:.85}.tool-link:hover{opacity:1}.form-control{width:100%;padding:10px 12px;font-size:14px;border:1px solid var(--border-color);border-radius:6px;background-color:var(--bg-main);color:var(--text-main);transition:all .2s;font-family:inherit}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #409eff1a;background-color:var(--bg-panel)}textarea.form-control{resize:vertical;min-height:80px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:13px}.switch-group{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding:8px 0;border-bottom:1px solid var(--border-color)}.switch-group:last-child{border-bottom:none}.form-divider{height:1px;background:var(--border-color);margin:12px 0;opacity:.5}.switch-label{font-size:14px;display:inline-flex;align-items:center;gap:8px;color:var(--text-main)}.switch{position:relative;display:inline-block;width:44px;height:24px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#dcdfe6;transition:.3s;border-radius:24px}.slider{background-color:#4c525a}.slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background-color:#fff;transition:.3s;border-radius:50%;box-shadow:0 2px 4px #0003}input:checked+.slider{background-color:var(--primary)}input:checked+.slider:before{transform:translate(20px)}.iframe-container{width:100%;flex:1;border-radius:6px;overflow:hidden;border:1px solid var(--border-color);background:var(--bg-main);display:flex;flex-direction:column}.iframe-container #previewPlayer{margin:0 auto}.code-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.code-title{font-size:14px;font-weight:600}.btn-copy{display:flex;align-items:center;gap:6px;background:var(--primary);color:#fff;border:none;padding:6px 12px;border-radius:6px;font-size:13px;cursor:pointer;transition:background .2s}.btn-copy:hover{background:var(--primary-hover)}.btn-copy.success{background:#67c23a}.code-container{background:var(--bg-main);border-radius:6px;border:1px solid var(--border-color);padding:16px;overflow:auto;max-height:600px}.code-container pre{margin:0}.seo-content-block{margin-top:40px;padding:40px;background:var(--bg-panel);border-radius:var(--radius);border:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.seo-content-block h2{font-size:20px;margin-bottom:16px;color:var(--text-main)}.seo-content-block p{color:var(--text-muted);margin-bottom:24px}.seo-content-block p:last-child{margin-bottom:0}@media screen and (max-width:992px){.generator-container{flex-direction:column}.config-panel{width:100%;max-height:500px}}