:root{--color-primary: #FF8C42;--color-primary-light: #FFB074;--color-primary-bg: #FFF0E0;--color-accent: #7EC8E3;--color-accent-light: #A8D8EA;--color-accent-bg: #E8F4F8;--color-success: #4CAF50;--color-warning: #FF9800;--color-danger: #F44336;--color-bg: #FFF8F0;--color-card: #FFFFFF;--color-text: #333333;--color-text-light: #888888;--color-border: #F0E8E0;--color-gray-light: #E8E4E0;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 2px 8px rgba(0,0,0,.1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--safe-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--color-bg);color:var(--color-text);font-size:16px;line-height:1.5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans SC,sans-serif}a{text-decoration:none;color:inherit}button{border:none;background:none;cursor:pointer;font-family:inherit}input,textarea{font-family:inherit;font-size:inherit}ul,ol{list-style:none}.app-container{max-width:480px;margin:0 auto;min-height:100vh;background:var(--color-bg);position:relative}.app-header{display:flex;align-items:center;justify-content:center;padding:12px 16px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.app-header .back-btn{position:absolute;left:8px;top:50%;transform:translateY(-50%);width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:32px;line-height:1;border-radius:50%;transition:background .2s}.app-header .back-btn:active{background:#fff3}.app-title{font-size:18px;font-weight:600;letter-spacing:.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:70%}.header-right{position:absolute;right:8px;top:50%;transform:translateY(-50%)}.user-switch-btn{height:38px;display:flex;align-items:center;gap:4px;border-radius:20px;padding:0 12px 0 6px;background:#ffffff26;transition:background .2s;color:#fff}.user-switch-btn:active{background:#ffffff4d}.user-avatar-mini{font-size:20px;line-height:1}.user-name-mini{font-size:13px;font-weight:500;white-space:nowrap;max-width:60px;overflow:hidden;text-overflow:ellipsis}.user-panel{background:#fff;border-radius:var(--radius-lg);width:90%;max-width:380px;max-height:80vh;overflow-y:auto;box-shadow:0 8px 30px #00000026}.user-panel-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 8px}.user-panel-title{font-size:17px;font-weight:600;color:var(--color-text)}.picker-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--color-text-light);border-radius:50%;transition:background .2s}.picker-close:active{background:var(--color-bg)}.user-list{padding:8px 12px}.user-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-md);cursor:pointer;transition:background .15s;position:relative}.user-item:active{background:var(--color-primary-bg)}.user-item.is-active{background:var(--color-primary-bg);border:1px solid var(--color-primary-light)}.user-item-avatar{font-size:28px;width:40px;text-align:center}.user-item-name{flex:1;font-size:16px;font-weight:500}.user-item-check{color:var(--color-success);font-weight:700;font-size:18px}.user-item-delete{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;font-size:12px;color:var(--color-text-light);background:var(--color-bg);opacity:0;transition:opacity .2s}.user-item:hover .user-item-delete{opacity:1}.user-item-delete:active{background:var(--color-danger);color:#fff}.user-add-section{padding:12px 16px 16px;border-top:1px solid var(--color-border)}.user-add-row{display:flex;gap:8px;margin-bottom:10px}.user-add-input{flex:1;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:15px;outline:none;transition:border-color .2s}.user-add-input:focus{border-color:var(--color-primary)}.user-add-btn{padding:10px 16px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;border-radius:var(--radius-sm);font-size:14px;font-weight:500;white-space:nowrap}.user-add-btn:disabled{opacity:.5}.user-add-btn:active:not(:disabled){transform:scale(.97)}.user-add-avatars{display:flex;flex-wrap:wrap;gap:6px}.avatar-option{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:20px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:all .15s}.avatar-option:hover{background:var(--color-bg)}.avatar-option.is-selected{border-color:var(--color-primary);background:var(--color-primary-bg)}.delete-confirm{text-align:center}.delete-confirm-text{font-size:14px;color:var(--color-text-light);line-height:1.6;padding:8px 0 16px}.app-main{padding:0 0 16px;min-height:calc(100vh - 56px)}.app-main.has-nav{padding-bottom:calc(72px + var(--safe-bottom))}.bottom-nav{position:fixed;bottom:0;left:0;right:0;max-width:480px;margin:0 auto;display:flex;background:#fff;border-top:1px solid var(--color-border);padding:8px 0 calc(8px + var(--safe-bottom));z-index:100;box-shadow:0 -2px 10px #0000000d}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;padding:4px 0;color:var(--color-text-light);transition:color .2s;-webkit-tap-highlight-color:transparent}.nav-item.active{color:var(--color-primary)}.nav-icon{font-size:22px;line-height:1.2}.nav-label{font-size:11px;margin-top:2px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:200;padding:24px}.modal-content{background:#fff;border-radius:var(--radius-lg);width:100%;max-width:340px;padding:24px;box-shadow:0 8px 30px #00000026}.modal-title{font-size:17px;font-weight:600;margin-bottom:16px}.modal-actions{display:flex;gap:12px;margin-top:16px}.modal-btn{flex:1;padding:12px;border-radius:var(--radius-sm);font-size:15px;font-weight:500;text-align:center}.modal-btn-cancel{background:var(--color-bg);color:var(--color-text-light)}.modal-btn-cancel:active{background:var(--color-border)}.modal-btn-confirm{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff}.modal-btn-confirm:active{transform:scale(.97)}.modal-btn-danger{background:var(--color-danger);color:#fff}.modal-btn-danger:active{opacity:.8}.btn-primary{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;border-radius:24px;font-size:15px;font-weight:500;box-shadow:0 2px 8px #ff8c424d;transition:transform .15s,box-shadow .15s;-webkit-tap-highlight-color:transparent}.btn-primary:active{transform:scale(.97);box-shadow:0 1px 4px #ff8c4233}.loading-spinner{display:flex;align-items:center;justify-content:center;padding:40px;color:var(--color-text-light);font-size:14px}.loading-spinner:before{content:"";width:20px;height:20px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite;margin-right:8px}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:40px 20px;color:var(--color-text-light);font-size:14px}.empty-state .empty-icon{font-size:48px;margin-bottom:12px;opacity:.6}.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000bf;color:#fff;padding:12px 24px;border-radius:8px;font-size:14px;z-index:999;pointer-events:none;animation:toastFade 2s ease forwards}@keyframes toastFade{0%{opacity:0;transform:translate(-50%,-50%) scale(.9)}10%{opacity:1;transform:translate(-50%,-50%) scale(1)}80%{opacity:1}to{opacity:0}}