:root{--color-primary: #007AFF;--color-primary-hover: #0066D6;--color-primary-active: #004E9A;--color-primary-light: rgba(0, 122, 255, .1);--color-primary-bg: rgba(0, 122, 255, .05);--primary-color: var(--color-primary);--primary-dark: var(--color-primary-hover);--primary-light: var(--color-primary-light);--primary-bg: var(--color-primary-bg);--color-success: #34C759;--color-success-light: rgba(52, 199, 89, .1);--color-warning: #FF9500;--color-warning-light: rgba(255, 149, 0, .1);--color-danger: #FF3B30;--color-danger-light: rgba(255, 59, 48, .1);--success: var(--color-success);--warning: var(--color-warning);--danger: var(--color-danger);--info: var(--color-primary);--gray-50: #FFFFFF;--gray-100: #F2F2F7;--gray-200: #E5E5EA;--gray-300: #D1D1D6;--gray-400: #C7C7CC;--gray-500: #AEAEB2;--gray-600: #8E8E93;--gray-700: #636366;--gray-800: #48484A;--gray-900: #3A3A3C;--gray-950: #1C1C1E;--text-primary: #000000;--text-secondary: rgba(60, 60, 67, .6);--text-tertiary: rgba(60, 60, 67, 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49px;--input-bar-height: 50px;--touch-target: 44px;--btn-height-sm: 32px;--btn-height-md: 44px;--btn-height-lg: 50px;--input-height: 44px;--toggle-width: 51px;--toggle-height: 31px;--toggle-thumb: 27px;--ease-smooth: cubic-bezier(.25, .1, .25, 1);--ease-spring: cubic-bezier(.175, .885, .32, 1.275);--ease-decelerate: cubic-bezier(0, 0, .2, 1);--duration-fast: .1s;--duration-normal: .2s;--duration-slow: .3s;--transition-fast: .1s var(--ease-smooth);--transition-normal: .2s var(--ease-smooth);--transition-spring: .35s var(--ease-spring);--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px);--z-sticky: 100;--z-fixed: 200;--z-modal: 500;--z-toast: 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svg{width:18px;height:18px;stroke-width:2}.form-group{margin-bottom:var(--space-4)}.form-label{display:block;font-size:var(--font-footnote);font-weight:var(--font-weight-medium);color:var(--text-secondary);margin-bottom:var(--space-2)}.form-input{width:100%;height:var(--input-height);border:none;border-radius:var(--radius-md);padding:0 var(--space-4);font-size:var(--font-body);font-family:var(--font-family);color:var(--text-primary);background:var(--gray-100);transition:background var(--transition-fast);-webkit-appearance:none;appearance:none}.form-input:hover{background:var(--gray-200)}.form-input:focus{background:var(--bg-primary);outline:none}.form-input::placeholder{color:var(--text-tertiary)}.form-input:disabled{background:var(--gray-100);color:var(--text-tertiary);cursor:not-allowed}.form-input.error{background:var(--color-danger-light)}.form-textarea{min-height:100px;padding:var(--space-3) 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var(--space-6);min-height:100%;background:var(--bg-primary)}.auth-brand{display:flex;flex-direction:column;align-items:center;margin-bottom:var(--space-8)}.auth-logo{width:60px;height:60px;background:var(--color-primary);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:var(--space-4)}.auth-title{font-size:var(--font-large-title);font-weight:var(--font-weight-bold);margin-bottom:var(--space-1);color:var(--text-primary)}.auth-subtitle{font-size:var(--font-callout);color:var(--text-secondary);margin-bottom:0;text-align:center}.auth-form{width:100%;max-width:320px}.auth-switch{text-align:center;margin-top:var(--space-6);font-size:var(--font-footnote);color:var(--text-secondary)}.auth-switch a{color:var(--color-primary);font-weight:var(--font-weight-medium);cursor:pointer}.auth-error{color:var(--color-danger);font-size:var(--font-footnote);text-align:center;margin-bottom:var(--space-3);min-height:20px}.demo-badge{background:var(--gray-100);color:var(--text-secondary);padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);font-size:var(--font-caption-1);font-weight:var(--font-weight-medium);margin-bottom:var(--space-6)}.auth-footer-text{position:absolute;bottom:var(--space-8);font-size:var(--font-caption-1);color:var(--text-tertiary)}.share-card{width:375px;background:var(--bg-primary);border-radius:var(--radius-lg);padding:28px;font-family:var(--font-family);color:var(--text-primary);border:1px solid var(--border-color)}.share-header{text-align:center;padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--border-color)}.share-title{font-size:20px;font-weight:700;color:var(--text-primary);margin:0}.share-date{font-size:13px;color:var(--text-secondary);margin:4px 0 0}.share-timeline{position:relative;padding-left:12px}.share-timeline:before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:1.5px;background:var(--border-color);border-radius:1px}.share-date-label{font-size:12px;font-weight:600;color:var(--text-secondary);padding-left:20px;margin:14px 0 8px}.share-date-label:first-child{margin-top:0}.share-event{margin-bottom:14px;position:relative;padding-left:24px}.share-event:before{content:"";position:absolute;left:-4px;top:6px;width:8px;height:8px;border-radius:50%;background:var(--primary-color)}.share-event .event-time{font-size:12px;font-weight:500;color:var(--primary-color);margin-bottom:2px}.share-event .event-title{font-size:15px;font-weight:600;margin:0 0 2px}.share-event .event-note{font-size:13px;color:var(--text-secondary);margin:0}.share-footer{margin-top:24px;padding-top:16px;border-top:1px solid var(--border-color);text-align:center}.share-logo{display:flex;justify-content:center;align-items:center;gap:6px;font-weight:600;font-size:14px}.logo-icon{width:20px;height:20px;border-radius:5px;background:var(--primary-color);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:10px;font-weight:800}.share-slogan{font-size:12px;color:var(--text-tertiary);margin:4px 0 0}.share-preview-page{display:flex;flex-direction:column;align-items:center;padding:24px 16px;gap:20px;overflow-y:auto;min-height:100%;background:var(--bg-secondary)}.share-actions{display:flex;gap:12px;width:100%;max-width:375px}.share-actions .btn{flex:1}.tab-bar{display:flex;justify-content:space-around;align-items:center;height:var(--tab-bar-height);background:var(--bg-primary);border-top:.5px solid var(--divider);padding-bottom:env(safe-area-inset-bottom,0);flex-shrink:0;z-index:var(--z-fixed);position:relative}.tab-bar.hidden{display:none}.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;height:100%;gap:2px;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:color var(--transition-fast);color:var(--gray-400);position:relative;user-select:none;min-width:var(--touch-target);min-height:var(--touch-target)}.tab-item.active{color:var(--color-primary)}.tab-item svg{width:25px;height:25px;stroke-width:1.5;transition:none}.tab-item.active svg{stroke-width:1.5}.tab-label{font-size:10px;font-weight:var(--font-weight-medium);line-height:1}.tab-item.active .tab-label{font-weight:var(--font-weight-medium)}.profile-header{display:flex;flex-direction:column;align-items:center;padding:40px var(--space-4) var(--space-6)}.profile-avatar{width:60px;height:60px;border-radius:30px;background:var(--gray-200);color:var(--text-secondary);font-size:var(--font-title-1);font-weight:var(--font-weight-medium);display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-3)}.profile-name{font-size:var(--font-title-3);font-weight:var(--font-weight-semibold);color:var(--text-primary);margin-bottom:2px}.profile-email{font-size:var(--font-footnote);color:var(--text-secondary)}.profile-section{margin:var(--space-2) var(--space-4);background:var(--bg-card);border-radius:var(--radius-md);overflow:hidden}.profile-item{display:flex;align-items:center;gap:var(--space-3);padding:11px var(--space-4);min-height:var(--touch-target);cursor:pointer;transition:background var(--transition-fast);color:var(--text-primary);-webkit-tap-highlight-color:transparent;position:relative}.profile-item:not(:last-child):after{content:"";position:absolute;bottom:0;left:var(--space-4);right:0;height:.5px;background:var(--divider)}.profile-item:active{background:var(--bg-hover)}.profile-item-label{flex:1;font-size:var(--font-body)}.profile-item.danger{color:var(--color-danger)}.profile-item svg:last-child{color:var(--gray-300)}.profile-item-icon{width:28px;height:28px;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.profile-item-icon.settings{background:var(--gray-200);color:var(--text-secondary)}.profile-item-icon.info{background:var(--color-primary-light);color:var(--color-primary)}.profile-item-icon.logout{background:var(--color-danger-light);color:var(--color-danger)}.fade-in{animation:fadeIn var(--duration-normal) var(--ease-smooth)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}.fade-in-scale{animation:fadeInScale var(--duration-slow) var(--ease-smooth)}@keyframes fadeInScale{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.slide-up{animation:slideUp var(--duration-slow) var(--ease-smooth) both}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)}}.view-enter{animation:viewEnter var(--duration-slow) var(--ease-decelerate)}@keyframes viewEnter{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.card-appear{animation:cardAppear var(--duration-slow) var(--ease-decelerate) both}@keyframes cardAppear{0%{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes modalSlideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes modalSlideDown{0%{transform:translateY(0)}to{transform:translateY(100%)}}@keyframes toastIn{0%{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}@keyframes toastOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-12px)}}.shake{animation:shake .3s var(--ease-smooth)}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.skeleton{background:linear-gradient(90deg,var(--bg-secondary) 25%,var(--gray-200) 50%,var(--bg-secondary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes typingBounce{0%,80%,to{transform:scale(.4);opacity:.4}40%{transform:scale(1);opacity:1}}@keyframes msgFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.animate-slide-up,.animate-fade-in,.animate-scale-in,.fade-in,.fade-in-scale,.slide-up,.view-enter,.card-appear{animation:none!important;opacity:1!important;transform:none!important}}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.text-center{text-align:center}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.mt-8{margin-top:var(--space-2)}.mt-16{margin-top:var(--space-4)}.mb-8{margin-bottom:var(--space-2)}.mb-16{margin-bottom:var(--space-4)}.gap-8{gap:var(--space-2)}.gap-12{gap:var(--space-3)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.w-full{width:100%}#toast-container{position:fixed;top:var(--space-5);left:50%;transform:translate(-50%);z-index:var(--z-toast);display:flex;flex-direction:column;gap:var(--space-2);pointer-events:none;max-width:380px;width:calc(100% - 32px)}.toast{padding:var(--space-3) var(--space-4);border-radius:var(--radius-sm);font-size:var(--font-footnote);font-weight:var(--font-weight-medium);text-align:center;pointer-events:auto;min-height:var(--touch-target);display:flex;align-items:center;justify-content:center;animation:toastIn var(--duration-slow) var(--ease-smooth),toastOut var(--duration-slow) ease 2.7s forwards}.toast-success{background:var(--color-success);color:var(--text-inverse)}.toast-error{background:var(--color-danger);color:var(--text-inverse)}.toast-warning{background:var(--color-warning);color:var(--text-inverse)}.toast-info{background:var(--color-primary);color:var(--text-inverse)}.modal-overlay{position:fixed;inset:0;background:#0006;z-index:var(--z-modal);display:flex;justify-content:center;align-items:flex-end;animation:fadeIn var(--duration-normal) var(--ease-smooth)}.modal-content{background:var(--bg-primary);width:100%;max-width:430px;border-radius:var(--radius-md) var(--radius-md) 0 0;padding:var(--space-2) var(--space-4) var(--space-5);padding-bottom:calc(var(--space-5) + env(safe-area-inset-bottom,0));animation:modalSlideUp var(--duration-slow) var(--ease-decelerate);max-height:85vh;overflow-y:auto;overscroll-behavior:contain}.modal-handle{width:36px;height:5px;background:var(--gray-300);border-radius:2.5px;margin:var(--space-2) auto var(--space-4);cursor:grab}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-4)}.modal-title{font-size:var(--font-headline);font-weight:var(--font-weight-semibold);color:var(--text-primary)}.modal-close{width:28px;height:28px;border-radius:50%;background:var(--gray-100);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background var(--transition-fast);-webkit-tap-highlight-color:transparent;border:none;font-size:16px}.modal-close:active{background:var(--gray-200)}