.header{background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;height:60px;display:flex;align-items:center;position:sticky;top:0;z-index:100}.header-inner{max-width:1200px;width:100%;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--primary)}.nav{display:flex;gap:24px}.nav-link{font-size:14px;font-weight:500;color:var(--text-secondary);transition:color .2s}.nav-link:hover{color:var(--primary)}.home{max-width:1200px;margin:0 auto;padding:0 24px}.hero{text-align:center;padding:64px 0 48px}.hero h1{font-size:42px;font-weight:700;letter-spacing:-.5px;margin-bottom:16px;background:linear-gradient(135deg,var(--primary),#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{font-size:18px;color:var(--text-secondary);max-width:600px;margin:0 auto}.box-types{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:64px}.box-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px;transition:all .25s ease;display:flex;flex-direction:column;align-items:center;text-align:center}.box-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-4px)}.box-card-icon{width:80px;height:80px;color:var(--primary);margin-bottom:20px}.box-card h2{font-size:20px;font-weight:600;margin-bottom:8px}.box-card p{font-size:14px;color:var(--text-secondary);margin-bottom:20px;line-height:1.6}.box-card-cta{font-size:14px;font-weight:600;color:var(--primary);margin-top:auto}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;padding:48px 0 80px;border-top:1px solid var(--border)}.feature{text-align:center}.feature-icon{font-size:32px;margin-bottom:12px}.feature h3{font-size:16px;font-weight:600;margin-bottom:6px}.feature p{font-size:13px;color:var(--text-secondary)}@media(max-width:768px){.hero h1{font-size:30px}.hero p{font-size:16px}.box-types{grid-template-columns:1fr}}.editor{display:flex;flex:1;overflow:hidden;height:calc(100vh - 60px)}.editor-sidebar{width:340px;min-width:340px;background:var(--surface);border-right:1px solid var(--border);overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:4px}.editor-header{margin-bottom:8px}.back-link{font-size:13px;color:var(--text-secondary);display:inline-block;margin-bottom:8px;transition:color .2s}.back-link:hover{color:var(--primary)}.editor-header h2{font-size:22px;font-weight:700;margin-bottom:4px}.editor-header .desc{font-size:13px;color:var(--text-secondary)}.params-section{padding:16px 0;border-top:1px solid var(--border)}.params-section h3{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--text-secondary);margin-bottom:12px}.param-field{margin-bottom:14px}.param-field label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text)}.param-field .unit{color:var(--text-secondary);font-weight:400}.input-row{display:flex;align-items:center;gap:10px}.input-row input[type=range]{flex:1;height:4px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--border);border-radius:2px;outline:none}.input-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--primary);cursor:pointer;border:2px solid white;box-shadow:0 1px 3px #0003}.num-input{width:64px;padding:6px 8px;border:1px solid var(--border);border-radius:6px;font-size:13px;text-align:center;outline:none;transition:border-color .2s}.num-input:focus{border-color:var(--primary)}.select-input{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;background:var(--surface);outline:none;cursor:pointer}.select-input:focus{border-color:var(--primary)}.radio-group{display:flex;gap:6px}.radio-btn{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-size:12px;font-weight:500;text-align:center;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.radio-btn input{display:none}.radio-btn:hover{border-color:var(--primary)}.radio-btn.active{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark)}.checkbox-label{display:flex!important;align-items:center;gap:8px;cursor:pointer}.checkbox-label input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary)}.checkbox-label span{font-size:13px}.btn{padding:10px 20px;border-radius:8px;font-size:14px;font-weight:600;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-full{width:100%;margin-top:8px}.editor-main{flex:1;display:flex;flex-direction:column;overflow-y:auto;background:var(--bg)}.preview-area{flex:1;min-height:400px;position:relative}.preview-3d{width:100%;height:100%;min-height:400px}.preview-3d canvas{width:100%!important;height:100%!important}.preview-hint{position:absolute;bottom:12px;left:50%;transform:translate(-50%);font-size:12px;color:var(--text-secondary);background:#ffffffd9;padding:4px 12px;border-radius:20px;pointer-events:none}.plans-panel{border-top:1px solid var(--border);padding:24px;background:var(--surface)}.plans-options{display:flex;gap:24px;margin-bottom:16px;align-items:center}.param-field.inline{display:flex;align-items:center;gap:8px;margin-bottom:0}.param-field.inline label{margin-bottom:0;white-space:nowrap}.param-field.inline input[type=color]{width:32px;height:32px;border:1px solid var(--border);border-radius:6px;padding:2px;cursor:pointer}.svg-preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.svg-preview-header h3{font-size:16px;font-weight:600}.svg-preview-container{border:1px solid var(--border);border-radius:8px;overflow:hidden;background:#fff;padding:16px}@media(max-width:768px){.editor{flex-direction:column;height:auto}.editor-sidebar{width:100%;min-width:0;border-right:none;border-bottom:1px solid var(--border);max-height:none}.preview-area{min-height:300px}}.app{min-height:100vh;display:flex;flex-direction:column}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #dbeafe;--bg: #f8fafc;--surface: #ffffff;--text: #1e293b;--text-secondary: #64748b;--border: #e2e8f0;--radius: 12px;--shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}button{cursor:pointer;border:none;font-family:inherit}input,select{font-family:inherit}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}