:root{--primary-color:#00d4aa;--primary-dark:#00b894;--primary-light:#00e6bc;--bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-card:#1e293b;--bg-hover:#334155;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;--border-color:#334155;--divider-color:#475569;--shadow-sm:0 1px 2px rgba(0, 0, 0, 0.3);--shadow-md:0 4px 6px rgba(0, 0, 0, 0.4);--shadow-lg:0 10px 15px rgba(0, 0, 0, 0.5);--shadow-xl:0 20px 25px rgba(0, 0, 0, 0.6);--success:#10b981;--warning:#f59e0b;--error:#ef4444;--info:#3b82f6;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;font-size:15px;line-height:1.6;color:var(--text-primary);background:var(--bg-primary);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:var(--bg-primary)!important}.app-container{background:var(--bg-primary)}.header{position:fixed;top:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;height:56px;background:rgba(255,255,255,.03);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 15px;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.5);border-bottom:1px solid rgba(255,255,255,.08)}.header-title{font-size:22px;font-weight:600;flex:1;text-align:center;color:#00d4aa}.header-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;border-radius:50%;transition:background .3s}.header-btn:active{background:rgba(255,255,255,.1)}.main-content{padding-top:66px;padding-bottom:60px;min-height:100vh;background:var(--bg-primary)}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;height:50px;background:var(--bg-card);display:flex;border-top:1px solid var(--border-color);z-index:1000}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);font-size:12px;line-height:1.2;transition:color .2s;gap:1px}.nav-item.active{color:#10b981}.nav-item.active .nav-icon{color:#10b981}.nav-item.active span{color:#10b981}.nav-icon{font-size:20px;margin-bottom:0;color:inherit;transition:color .2s;line-height:1}.nav-item span{color:inherit;transition:color .2s;line-height:1;margin-top:0}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin:15px;padding:20px;box-shadow:var(--shadow-sm)}.card-title{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--border-color)}.tool-item{display:flex;align-items:center;padding:15px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-bottom:10px;box-shadow:var(--shadow-sm);transition:border-color .2s,transform .2s,background-color .2s;position:relative;overflow:visible}.tool-item:hover{border-color:rgba(0,212,170,.3)}.tool-item.selected{position:relative;border-color:rgba(0,212,170,.3);box-shadow:0 0 0 2px rgba(0,212,170,.1);overflow:visible}.tool-item.selected::before{content:'';position:absolute;top:-2px;left:-1px;right:-1px;height:4px;background:linear-gradient(90deg,rgba(0,212,170,0) 0,#00d4aa 50%,rgba(0,212,170,0) 100%);border-radius:var(--radius-lg) var(--radius-lg) 0 0;z-index:10;pointer-events:none}.tool-item:active{transform:scale(.98);background:var(--bg-hover)}.tool-icon{width:50px;height:50px;background:rgba(0,212,170,.1);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#00d4aa;font-size:24px;margin-right:15px;flex-shrink:0}.tool-info{flex:1}.tool-name{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.tool-desc{font-size:13px;color:var(--text-secondary)}.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-primary);padding:12px 24px;border-radius:var(--radius-md);box-shadow:var(--shadow-xl);z-index:10000;display:none;font-size:14px}.toast.show{display:block;animation:fadeIn .3s ease}@keyframes fadeIn{from{opacity:0;transform:translate(-50%,-50%) scale(.9)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}.loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(15,23,42,.9);display:none;align-items:center;justify-content:center;z-index:9999}.loading-overlay.active{display:flex}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.8);display:none;align-items:center;justify-content:center;z-index:2000;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.modal-overlay.show{display:flex}.modal-content{background:#1e293b;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);padding:0;max-width:450px;width:calc(100% - 30px);box-shadow:0 20px 60px rgba(0,0,0,.8)}.modal-header{padding:20px;border-bottom:1px solid 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20px;position:relative}.auth-page::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 50%,rgba(99,102,241,.1) 0,transparent 50%),radial-gradient(circle at 80% 80%,rgba(99,102,241,.08) 0,transparent 50%);pointer-events:none}.auth-header{text-align:center;margin-bottom:40px;position:relative;z-index:1}.auth-logo{width:88px;height:88px;margin:0 auto 24px;background:linear-gradient(135deg,var(--primary-color),var(--primary-dark));border-radius:var(--radius-xl);display:flex;align-items:center;justify-content:center;box-shadow:0 10px 40px rgba(0,212,170,.4);transition:transform .3s ease}.auth-logo:hover{transform:translateY(-4px)}.auth-logo svg{width:44px;height:44px;stroke:white}.auth-title{font-size:28px;font-weight:700;color:var(--text-primary);margin-bottom:8px;letter-spacing:-.5px}.auth-subtitle{font-size:14px;color:var(--text-secondary);font-weight:400}.auth-form{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:32px 28px;width:100%;max-width:420px;box-shadow:var(--shadow-xl);position:relative;z-index:1}.form-step{width:100%;min-height:200px}.form-step[style*="display: none"]{display:none!important}.form-group{margin-bottom:22px}.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.form-input{width:100%;height:48px;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:var(--radius-md);padding:0 16px;font-size:15px;color:var(--text-primary);transition:border-color .2s,background-color .2s,box-shadow .2s}.form-input:-webkit-autofill,.form-input:-webkit-autofill:active,.form-input:-webkit-autofill:focus,.form-input:-webkit-autofill:hover{-webkit-box-shadow:0 0 0 30px var(--bg-secondary) 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.form-input{flex:1}.btn-code{height:48px;padding:0 20px;background:var(--bg-secondary);border:2px solid var(--border-color);color:var(--primary-color);border-radius:var(--radius-md);font-size:13px;font-weight:600;white-space:nowrap;cursor:pointer;transition:background-color .2s,color .2s,border-color .2s}.btn-code:hover:not(:disabled){background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.btn-code:disabled{opacity:.5;cursor:not-allowed}@media (max-width:480px){.auth-form{padding:28px 22px}.auth-title{font-size:24px}.auth-logo{width:76px;height:76px}.auth-logo svg{width:38px;height:38px}}input:-webkit-autofill,input:-webkit-autofill:focus,input:-webkit-autofill:hover,select:-webkit-autofill,select:-webkit-autofill:focus,select:-webkit-autofill:hover,textarea:-webkit-autofill,textarea:-webkit-autofill:focus,textarea:-webkit-autofill:hover{-webkit-box-shadow:0 0 0 1000px #1e293b inset!important;box-shadow:0 0 0 1000px #1e293b 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.2s;cursor:pointer;min-height:180px;justify-content:space-between;width:100%;max-width:100%;box-sizing:border-box;overflow:hidden}.tool-grid-item:hover{border-color:rgba(0,212,170,.3)}.tool-grid-item.selected{border-color:rgba(0,212,170,.5);box-shadow:0 0 0 2px rgba(0,212,170,.1)}.tool-grid-item:active{transform:scale(.98);background:var(--bg-hover)}.tool-grid-icon{width:60px;height:60px;background:rgba(0,212,170,.1);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#00d4aa;font-size:28px;margin-bottom:10px}.tool-grid-name{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:6px;line-height:1.3;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;width:100%;max-width:100%}.tool-grid-desc{font-size:12px;color:var(--text-secondary);margin-bottom:10px;line-height:1.4;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;flex:1;width:100%;max-width:100%}.tool-grid-action{width:100%;max-width:100%;display:flex;gap:8px;justify-content:center}.tool-grid-action button{flex:1;font-size:12px;padding:8px 12px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tool-grid-price{width:100%;max-width:100%;display:flex;flex-direction:column;align-items:center;gap:8px}.tool-grid-price .free-badge{background:rgba(0,212,170,.1);color:#00d4aa;padding:4px 10px;border-radius:12px;font-size:12px;font-weight:600;display:inline-flex;align-items:center}.tool-grid-price .tool-actions{display:flex;gap:6px;width:100%}.tool-grid-price .tool-actions button{flex:1;font-size:11px;padding:6px 10px}