:root{--app-bg: #f5f5f7;--surface-bg: #ffffff;--surface-secondary: #fbfbfd;--text-primary: #1d1d1f;--text-secondary: #86868b;--border-color: rgba(0, 0, 0, .08);--accent: #0071e3;--accent-hover: #0077ed;--shadow-sm: 0 2px 12px rgba(0, 0, 0, .06);--shadow-md: 0 8px 32px rgba(0, 0, 0, .08);--radius-lg: 16px;--radius-md: 12px;--radius-sm: 10px}body{background:var(--app-bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app-header{position:sticky;top:0;z-index:50;background:#ffffffd1;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--border-color);color:var(--text-primary)}.app-title{color:var(--text-primary)!important;margin:0;font-weight:700;letter-spacing:-.02em}.app-content{padding:24px;background:var(--app-bg);min-height:calc(100vh - 64px)}.ant-card{border:1px solid var(--border-color)!important;box-shadow:var(--shadow-sm)!important;background:var(--surface-bg)!important;border-radius:var(--radius-lg)!important;transition:box-shadow .25s ease,transform .25s ease}.ant-card:hover{box-shadow:var(--shadow-md)!important}.ant-card-head{border-bottom:1px solid var(--border-color)!important;font-weight:600}.ant-tabs-nav{margin-bottom:20px!important}.ant-tabs-tab{border-radius:var(--radius-md)!important;padding:10px 20px!important;font-weight:500;color:var(--text-secondary)!important;transition:all .2s ease}.ant-tabs-tab-active{background:var(--surface-bg)!important;box-shadow:var(--shadow-sm)!important;color:var(--accent)!important}.ant-tabs-ink-bar{display:none}.ant-form-item-label>label{color:var(--text-secondary);font-weight:500}.ant-input,.ant-input-number,.ant-select-selector{background:var(--surface-secondary)!important;border-color:var(--border-color)!important;transition:all .2s ease}.ant-input:focus,.ant-input-number:focus,.ant-select-focused .ant-select-selector{background:var(--surface-bg)!important;border-color:var(--accent)!important;box-shadow:0 0 0 3px #0071e31f!important}.ant-btn-primary{background:var(--accent)!important;border-color:var(--accent)!important;box-shadow:0 4px 14px #0071e340!important;font-weight:600;transition:all .2s ease}.ant-btn-primary:hover{background:var(--accent-hover)!important;transform:translateY(-1px);box-shadow:0 6px 20px #0071e352!important}.ant-descriptions{background:var(--surface-secondary);border-radius:var(--radius-md);padding:16px}.ant-descriptions-item-label{color:var(--text-secondary);font-weight:500}.ant-slider-track{background:var(--accent)!important}.ant-slider-handle:after{box-shadow:0 0 0 2px var(--accent)!important}.input-card{height:100%}.result-card{margin-bottom:16px}.placeholder-3d{display:flex;align-items:center;justify-content:center;height:120px;background:var(--surface-secondary);border:1px dashed var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary)}.preview-canvas-wrapper{margin-top:16px}.preview-canvas{width:100%;height:400px;border-radius:var(--radius-md);border:1px solid var(--border-color);background:var(--surface-secondary);box-shadow:inset 0 0 0 1px #ffffff80}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px;background:radial-gradient(circle at 30% 20%,rgba(0,113,227,.08) 0%,transparent 40%),radial-gradient(circle at 80% 80%,rgba(0,113,227,.06) 0%,transparent 40%),var(--app-bg)}.login-card{width:100%;max-width:400px;padding:48px 40px;background:#ffffffeb;backdrop-filter:saturate(180%) blur(24px);-webkit-backdrop-filter:saturate(180%) blur(24px);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);text-align:center}.login-logo{display:inline-block;padding:6px 14px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--accent);background:#0071e314;border-radius:999px;margin-bottom:20px}.login-title{font-size:28px;font-weight:700;letter-spacing:-.03em;color:var(--text-primary);margin:0 0 8px}.login-subtitle{font-size:15px;color:var(--text-secondary);margin:0 0 28px}.login-divider{height:1px;background:var(--border-color);margin:0 0 28px}.login-field{margin-bottom:20px}.login-field .ant-input{background:var(--surface-bg)!important}.login-button{height:46px!important;font-size:16px!important;border-radius:var(--radius-md)!important}.login-footer{display:flex;justify-content:space-between;margin-top:28px;padding-top:20px;border-top:1px solid var(--border-color);font-size:12px;color:var(--text-secondary)}.login-copyright{opacity:.8}