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48px;--sf-space-16: 64px;--sf-radius-sm: var(--radius-sm);--sf-radius-md: var(--radius-md);--sf-radius-lg: var(--radius-lg);--sf-radius-xl: var(--radius-xl);--sf-radius-full: var(--radius-full);--sf-shadow-xs: var(--shadow-sm);--sf-shadow-sm: var(--shadow-sm);--sf-shadow-md: var(--shadow-md);--sf-shadow-lg: var(--shadow-lg);--sf-shadow-xl: var(--shadow-lg);--sf-ease-standard: var(--ease-standard);--sf-ease-bounce: var(--ease-bounce);--sf-duration-fast: var(--duration-fast);--sf-duration-normal: var(--duration-normal);--sf-duration-slow: var(--duration-slow);--sf-z-dropdown: var(--z-dropdown);--sf-z-sticky: var(--z-sticky);--sf-z-fixed: var(--z-fixed);--sf-z-modal-backdrop: var(--z-modal-backdrop);--sf-z-modal: var(--z-modal);--sf-z-popover: var(--z-popover);--sf-z-tooltip: var(--z-tooltip);--sf-breakpoint-xs: 480px;--sf-breakpoint-sm: 576px;--sf-breakpoint-md: 768px;--sf-breakpoint-lg: 1024px;--sf-breakpoint-xl: 1280px;--sf-breakpoint-2xl: 1536px;--yt-brand: var(--sf-brand);--yt-brand-hover: var(--sf-brand-hover);--yt-brand-light: var(--sf-brand-light);--yt-brand-softer: var(--sf-brand-subtle);--yt-primary: var(--sf-brand);--yt-text-primary: var(--sf-text-primary);--yt-text-secondary: var(--sf-text-secondary);--yt-text-tertiary: var(--sf-text-muted);--yt-bg: var(--sf-bg);--yt-bg-secondary: var(--sf-bg-card);--yt-bg-tertiary: var(--sf-bg-elevated);--yt-border: var(--sf-border);--yt-highlight-bg: var(--sf-brand-subtle);--yt-highlight-border: rgba(99, 102, 241, .4);--yt-study-divider: var(--sf-border);--color-success: var(--sf-success);--color-warning: var(--sf-warning);--color-danger: var(--sf-danger);--color-info: var(--sf-info);--annotation-vocabulary: var(--sf-annotation-vocabulary);--annotation-phrase: var(--sf-annotation-phrase);--annotation-important: var(--sf-annotation-important);--shadow-card: var(--sf-shadow-sm);--shadow-hover: var(--sf-shadow-md);--shadow-modal: var(--sf-shadow-lg);--shadow-sm: var(--sf-shadow-xs);--shadow-lg: var(--sf-shadow-lg);--shadow-xl: var(--sf-shadow-lg);--transition-fast: var(--sf-duration-fast);--transition-normal: var(--sf-duration-normal);--transition-slow: var(--sf-duration-slow);--yt-brand-gradient: linear-gradient(135deg, #6366f1 0%, #818cf8 50%, #06b6d4 100%);--yt-bg-gradient: linear-gradient(180deg, #f8faff 0%, #f9fafb 25%, #f9fafb 100%);--glass-bg: rgba(255, 255, 255, .9);--glass-blur: blur(12px);--glass-border: 1px solid rgba(99, 102, 241, .1)}.dark{--yt-text-primary: var(--color-text-primary);--yt-text-secondary: var(--color-text-secondary);--yt-text-tertiary: var(--color-text-muted);--yt-bg: var(--color-bg-base);--yt-bg-secondary: var(--color-bg-card);--yt-bg-tertiary: var(--color-bg-elevated);--yt-border: var(--color-border);--yt-highlight-bg: rgba(99, 102, 241, .15);--yt-highlight-border: rgba(99, 102, 241, .4);--color-text-primary: var(--color-text-primary);--color-text-secondary: var(--color-text-secondary);--color-text-tertiary: var(--color-text-muted);--color-text-placeholder: #475569;--color-border: var(--color-border);--color-border-light: var(--color-border-strong);--color-bg: var(--color-bg-base);--color-bg-secondary: var(--color-bg-card);--color-bg-tertiary: var(--color-bg-elevated);--color-bg-hover: var(--color-bg-elevated);--color-bg-mask: rgba(0, 0, 0, .7);--yt-brand-gradient: linear-gradient(135deg, #818cf8 0%, #6366f1 100%);--yt-bg-gradient: linear-gradient(180deg, #0d1117 0%, #0f172a 15%, #0f172a 100%);--glass-bg: rgba(30, 41, 59, .9);--glass-border: 1px solid rgba(255, 255, 255, .08)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}#app{min-height:100vh}.page-title{font-size:22px;font-weight:700;color:var(--color-text-primary);margin:0 0 24px;letter-spacing:-.3px}.section-title{font-size:16px;font-weight:600;color:var(--color-text-primary);margin:0 0 16px;display:flex;align-items:center;gap:8px}.section-title svg{color:var(--color-brand)}.card-container{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:24px;border:1px solid var(--color-border);box-shadow:var(--shadow-sm);transition:box-shadow .2s}.card-container:hover{box-shadow:var(--shadow-md)}.brand-text{color:var(--color-brand)}.pagination-center{display:flex;justify-content:center;padding:28px 0}.sf-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;font-size:13px;font-weight:500;font-family:inherit;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:all .15s cubic-bezier(.4,0,.2,1);-webkit-user-select:none;user-select:none;white-space:nowrap;line-height:1.4}.sf-btn:focus-visible{outline:2px solid var(--color-brand);outline-offset:2px}.sf-btn--primary{background:var(--color-brand);color:#fff;border-color:var(--color-brand)}.sf-btn--primary:hover{background:var(--color-brand-hover);border-color:var(--color-brand-hover)}.sf-btn--ghost{background:transparent;border-color:var(--color-border);color:var(--color-text-secondary)}.sf-btn--ghost:hover{background:var(--color-bg-elevated);color:var(--color-text-primary);border-color:var(--color-border-strong)}.sf-btn--sm{padding:5px 12px;font-size:12px}.sf-btn--icon{width:32px;height:32px;padding:0;border-radius:var(--radius-md)}.sf-btn--active{background:var(--color-warning);border-color:var(--color-warning);color:#fff}.sf-btn--danger{background:var(--color-danger);color:#fff;border-color:var(--color-danger)}.sf-btn--danger:hover{background:#dc2626;border-color:#dc2626}.sf-btn--outline{background:transparent;border-color:var(--color-border);color:var(--color-text-primary)}.sf-btn--outline:hover{background:var(--color-bg-elevated);border-color:var(--color-border-strong)}.sf-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-md);border:none;background:transparent;color:var(--color-text-secondary);cursor:pointer;transition:all .15s cubic-bezier(.4,0,.2,1);flex-shrink:0}.sf-icon-btn:hover{background:var(--color-bg-elevated);color:var(--color-text-primary)}.sf-fade-enter-active,.sf-fade-leave-active{transition:opacity .2s cubic-bezier(.4,0,.2,1)}.sf-fade-enter-from,.sf-fade-leave-to{opacity:0}.sf-slide-enter-active{transition:all .2s cubic-bezier(.4,0,.2,1)}.sf-slide-leave-active{transition:all .15s cubic-bezier(.4,0,.2,1)}.sf-slide-enter-from{opacity:0;transform:translateY(8px)}.sf-slide-leave-to{opacity:0;transform:translateY(-4px)}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton{background:linear-gradient(90deg,var(--color-bg-card) 25%,var(--color-bg-elevated) 37%,var(--color-bg-card) 63%);background-size:200% 100%;animation:shimmer 1.4s ease infinite;border-radius:var(--radius-md)}.sf-loading-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#ffffffb3;border-radius:inherit;z-index:10}.dark .sf-loading-overlay{background:#0f172ab3}.sf-loading-spinner{width:28px;height:28px;border:3px solid var(--color-border);border-right-color:var(--color-brand);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}:root{--breakpoint-xs: 480px;--breakpoint-sm: 576px;--breakpoint-md: 768px;--breakpoint-lg: 1024px;--breakpoint-xl: 1200px;--mobile-padding: 12px;--mobile-gap: 12px;--mobile-font-xs: 12px;--mobile-font-sm: 14px;--mobile-font-base: 16px;--mobile-font-lg: 18px;--mobile-font-xl: 20px;--touch-target-min: 44px}@media (max-width: 768px){.pc-only{display:none!important}.mobile-only{display:block!important}.mobile-flex{display:flex!important}.mobile-container{padding:0 var(--mobile-padding)}.mobile-card{border-radius:8px;padding:var(--mobile-padding);margin-bottom:var(--mobile-gap)}.mobile-btn{min-height:var(--touch-target-min);min-width:var(--touch-target-min)}.mobile-input{font-size:var(--mobile-font-base)}.mobile-list-item{padding:var(--mobile-padding);border-bottom:1px solid #eee}.mobile-grid-1{display:grid;grid-template-columns:1fr;gap:var(--mobile-gap)}.mobile-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--mobile-gap)}.mobile-full-width{width:100%}.mobile-stack{flex-direction:column}.mobile-text-center{text-align:center}.mobile-no-spacing{padding:0;margin:0}}@media (min-width: 769px){.mobile-only{display:none!important}.pc-only{display:block!important}}@media (min-width: 768px) and (max-width: 1024px){.tablet-grid-2{grid-template-columns:repeat(2,1fr)}.tablet-grid-3{grid-template-columns:repeat(3,1fr)}}@media (max-width: 480px){:root{--mobile-padding: 8px;--mobile-gap: 8px}.xs-stack{flex-direction:column}.xs-full-width{width:100%}.xs-text-sm{font-size:var(--mobile-font-sm)}}@media (hover: none) and (pointer: coarse){button,a,.clickable{min-height:var(--touch-target-min);min-width:var(--touch-target-min)}.no-hover:hover{background:inherit;transform:none}}@supports (padding: env(safe-area-inset-bottom)){.safe-area-bottom{padding-bottom:env(safe-area-inset-bottom)}.safe-area-top{padding-top:env(safe-area-inset-top)}}.no-select{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.no-tap-highlight{-webkit-tap-highlight-color:transparent}.smooth-scroll{-webkit-overflow-scrolling:touch;scroll-behavior:smooth}.hide-scrollbar{-ms-overflow-style:none;scrollbar-width:none}.hide-scrollbar::-webkit-scrollbar{display:none}.sf-confirm-overlay[data-v-2538b88f]{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:9998}.sf-confirm-dialog[data-v-2538b88f]{background:var(--color-bg-card);border-radius:16px;box-shadow:var(--shadow-lg);padding:24px;width:400px;max-width:90vw;animation:scale-in-2538b88f .2s cubic-bezier(.34,1.56,.64,1)}@keyframes scale-in-2538b88f{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.sf-confirm-title[data-v-2538b88f]{font-size:16px;font-weight:600;color:var(--color-text-primary);margin:0 0 8px}.sf-confirm-msg[data-v-2538b88f]{font-size:14px;color:var(--color-text-secondary);margin:0 0 20px;line-height:1.5}.sf-confirm-actions[data-v-2538b88f]{display:flex;justify-content:flex-end;gap:10px}.sf-confirm-btn[data-v-2538b88f]{padding:8px 18px;font-size:14px;font-weight:500;border:none;border-radius:8px;cursor:pointer;transition:all .15s}.sf-confirm-btn--cancel[data-v-2538b88f]{background:var(--color-bg-elevated);color:var(--color-text-secondary)}.sf-confirm-btn--cancel[data-v-2538b88f]:hover{background:var(--color-border)}.sf-confirm-btn--warning[data-v-2538b88f]{background:var(--color-warning);color:#fff}.sf-confirm-btn--warning[data-v-2538b88f]:hover{background:#d97706}.sf-confirm-btn--danger[data-v-2538b88f]{background:var(--color-danger);color:#fff}.sf-confirm-btn--danger[data-v-2538b88f]:hover{background:#dc2626}.sf-confirm-enter-active[data-v-2538b88f],.sf-confirm-leave-active[data-v-2538b88f]{transition:opacity .2s}.sf-confirm-enter-from[data-v-2538b88f],.sf-confirm-leave-to[data-v-2538b88f]{opacity:0}.sf-toast-container[data-v-967dcdf9]{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px;pointer-events:none}.sf-toast[data-v-967dcdf9]{display:flex;align-items:center;gap:10px;padding:12px 16px;min-width:280px;max-width:420px;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:10px;box-shadow:var(--shadow-lg);pointer-events:auto;font-size:14px;color:var(--color-text-primary)}.sf-toast--success .sf-toast-icon[data-v-967dcdf9]{color:var(--color-success)}.sf-toast--error .sf-toast-icon[data-v-967dcdf9]{color:var(--color-danger)}.sf-toast--warning .sf-toast-icon[data-v-967dcdf9]{color:var(--color-warning)}.sf-toast--info .sf-toast-icon[data-v-967dcdf9]{color:var(--color-brand)}.sf-toast-icon[data-v-967dcdf9]{display:flex;flex-shrink:0}.sf-toast-msg[data-v-967dcdf9]{flex:1;line-height:1.4}.sf-toast-close[data-v-967dcdf9]{display:flex;align-items:center;background:none;border:none;color:var(--color-text-muted);cursor:pointer;padding:2px;flex-shrink:0}.sf-toast-close[data-v-967dcdf9]:hover{color:var(--color-text-primary)}.sf-toast-enter-active[data-v-967dcdf9]{transition:all .3s cubic-bezier(.34,1.56,.64,1)}.sf-toast-leave-active[data-v-967dcdf9]{transition:all .2s}.sf-toast-enter-from[data-v-967dcdf9],.sf-toast-leave-to[data-v-967dcdf9]{opacity:0;transform:translate(40px)}.sf-dropdown[data-v-01406336]{position:relative;display:inline-flex}.sf-dropdown-trigger[data-v-01406336]:focus-visible{outline:2px solid var(--color-brand);outline-offset:2px;border-radius:4px}.sf-dropdown-menu[data-v-01406336]{position:absolute;left:0;right:auto;min-width:160px;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:10px;box-shadow:var(--shadow-lg);z-index:var(--z-dropdown);padding:4px}.sf-dropdown-enter-active[data-v-01406336],.sf-dropdown-leave-active[data-v-01406336]{transition:all .15s}.sf-dropdown-enter-from[data-v-01406336],.sf-dropdown-leave-to[data-v-01406336]{opacity:0;transform:translateY(-4px)}.sf-avatar[data-v-bfb43126]{display:flex;align-items:center;justify-content:center;border-radius:50%;overflow:hidden;background:var(--color-brand-subtle);color:var(--color-brand);font-weight:600;flex-shrink:0}.sf-avatar--sm[data-v-bfb43126]{width:32px;height:32px;font-size:13px}.sf-avatar--md[data-v-bfb43126]{width:40px;height:40px;font-size:16px}.sf-avatar--lg[data-v-bfb43126]{width:64px;height:64px;font-size:24px}.sf-avatar-img[data-v-bfb43126]{width:100%;height:100%;object-fit:cover}.sf-avatar-text[data-v-bfb43126]{line-height:1}.page-slide-enter-active[data-v-e452c10c],.page-slide-leave-active[data-v-e452c10c]{transition:opacity .15s ease}.page-slide-enter-from[data-v-e452c10c],.page-slide-leave-to[data-v-e452c10c]{opacity:0}@media (max-width: 1024px){main[data-v-e452c10c]{padding:20px!important}}@media (max-width: 768px){main[data-v-e452c10c]{padding:16px 16px 72px!important}}