.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);border:1px solid transparent;border-radius:var(--radius-md);font-weight:var(--weight-medium);font-size:var(--text-md);line-height:1;white-space:nowrap;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background-color var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast)}.btn:focus-visible{outline:2px solid var(--color-focus-ring);outline-offset:2px}.btn:disabled,.btn[aria-busy=true]{cursor:not-allowed;opacity:.55}.btn--sm{height:32px;padding:0 var(--space-3);font-size:var(--text-sm)}.btn--md{height:38px;padding:0 var(--space-4)}.btn--lg{height:44px;padding:0 var(--space-5);font-size:var(--text-base)}.btn--full{width:100%}.btn__icon{display:inline-flex;align-items:center}.btn--primary{background-color:var(--color-action-primary);color:var(--color-on-action-primary)}.btn--primary:not(:disabled):hover{background-color:var(--color-action-primary-hover)}.btn--primary:not(:disabled):active{background-color:var(--color-action-primary-active)}.btn--secondary{background-color:var(--color-action-secondary-bg);border-color:var(--color-border);color:var(--color-text)}.btn--secondary:not(:disabled):hover{background-color:var(--color-action-secondary-hover);border-color:var(--color-border-strong)}.btn--ghost{background-color:transparent;color:var(--color-text-secondary)}.btn--ghost:not(:disabled):hover{background-color:var(--color-action-ghost-hover);color:var(--color-text)}.btn--danger{background-color:transparent;border-color:var(--color-border);color:var(--color-error)}.btn--danger:not(:disabled):hover{background-color:var(--color-error-bg);border-color:var(--color-error)}.spinner{animation:spinner-rotate .8s linear infinite}.spinner__track{stroke:currentColor;stroke-opacity:.25;stroke-width:2.5}.spinner__head{stroke:currentColor;stroke-width:2.5;stroke-linecap:round}@keyframes spinner-rotate{to{transform:rotate(360deg)}}.field{display:flex;flex-direction:column;gap:var(--space-2);min-width:0}.field__label{font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--color-text)}.field__required{margin-left:var(--space-1);color:var(--color-error)}.field__hint{font-size:var(--text-sm);color:var(--color-text-tertiary);line-height:var(--leading-normal)}.field__error{font-size:var(--text-sm);color:var(--color-error);line-height:var(--leading-normal)}.input,.textarea,.select__control{width:100%;background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);font-size:var(--text-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input,.select__control{height:38px;padding:0 var(--space-3)}.textarea{padding:var(--space-2) var(--space-3);min-height:96px;resize:vertical;line-height:var(--leading-normal)}.input::placeholder,.textarea::placeholder{color:var(--color-text-tertiary)}.input:hover:not(:disabled),.textarea:hover:not(:disabled),.select__control:hover:not(:disabled){border-color:var(--color-border-strong)}.input:focus,.textarea:focus,.select__control:focus{outline:none;border-color:var(--color-action-primary);box-shadow:inset 0 0 0 1px var(--color-action-primary)}.input:disabled,.textarea:disabled,.select__control:disabled{background-color:var(--color-surface-muted);color:var(--color-text-disabled);cursor:not-allowed}.input[aria-invalid=true],.textarea[aria-invalid=true],.select__control[aria-invalid=true]{border-color:var(--color-error)}.input[aria-invalid=true]:focus,.textarea[aria-invalid=true]:focus,.select__control[aria-invalid=true]:focus{box-shadow:inset 0 0 0 1px var(--color-error)}.select{position:relative;display:inline-flex;width:100%}.select__control{-webkit-appearance:none;-moz-appearance:none;appearance:none;padding-right:var(--space-8);cursor:pointer}.select__chevron{position:absolute;right:var(--space-3);top:50%;transform:translateY(-50%);color:var(--color-text-tertiary);pointer-events:none}.card{display:flex;flex-direction:column;background-color:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);padding:var(--space-5);min-width:0}.card--flush{padding:0}.card--interactive{cursor:pointer;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast)}.card--interactive:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-md);transform:translateY(-1px)}.card__header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-2)}.card__title{font-size:var(--text-base);font-weight:var(--weight-semibold)}.card__body{color:var(--color-text-secondary);font-size:var(--text-md);line-height:var(--leading-relaxed)}.card__footer{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-4);padding-top:var(--space-4);border-top:1px solid var(--color-border-subtle)}.card__row{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-4);padding:var(--space-2) 0}.card__row-label{font-size:var(--text-sm);color:var(--color-text-tertiary)}.card__row-value{font-size:var(--text-sm);color:var(--color-text);text-align:right;overflow-wrap:anywhere}.dialog{border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background-color:var(--color-surface-raised);color:var(--color-text);padding:0;box-shadow:var(--shadow-md)}.dialog::backdrop{background-color:var(--color-overlay)}.dialog--sm{width:min(26rem,calc(100vw - 2rem))}.dialog--md{width:min(36rem,calc(100vw - 2rem))}.dialog--lg{width:min(48rem,calc(100vw - 2rem))}.dialog__frame{display:flex;flex-direction:column}.dialog__header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border-subtle)}.dialog__title{font-size:var(--text-lg);font-weight:var(--weight-semibold)}.dialog__close{flex-shrink:0}.dialog__body{padding:var(--space-5);font-size:var(--text-md);color:var(--color-text-secondary);line-height:var(--leading-relaxed)}.dialog__footer{display:flex;justify-content:flex-end;gap:var(--space-2);padding:var(--space-4) var(--space-5);border-top:1px solid var(--color-border-subtle);background-color:var(--color-surface-muted);border-radius:0 0 var(--radius-lg) var(--radius-lg)}.dropdown{position:relative;display:inline-flex}.dropdown__trigger{display:inline-flex;align-items:center;gap:var(--space-1);height:34px;padding:0 var(--space-2) 0 var(--space-3);background-color:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--text-sm);cursor:pointer;transition:background-color var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast)}.dropdown__trigger:hover{background-color:var(--color-action-ghost-hover);color:var(--color-text)}.dropdown__chevron{transition:transform var(--transition-fast)}.dropdown__chevron--open{transform:rotate(180deg)}.dropdown__menu{position:absolute;top:calc(100% + var(--space-1));z-index:var(--z-dropdown);display:flex;flex-direction:column;min-width:12rem;padding:var(--space-1);background-color:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-md)}.dropdown__menu--right{right:0}.dropdown__menu--left{left:0}.dropdown__item{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:none;border:none;border-radius:var(--radius-sm);color:var(--color-text);font-size:var(--text-sm);text-align:left;cursor:pointer}.dropdown__item:hover,.dropdown__item:focus-visible{background-color:var(--color-action-ghost-hover);outline:none}.dropdown__item--danger{color:var(--color-error)}.dropdown__item--danger:hover,.dropdown__item--danger:focus-visible{background-color:var(--color-error-bg)}.dropdown__item-icon{display:inline-flex;color:var(--color-text-tertiary)}.empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--space-3);padding:var(--space-12) var(--space-6);background-color:var(--color-surface);border:1px dashed var(--color-border);border-radius:var(--radius-lg)}.empty-state__icon{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:var(--radius-round);background-color:var(--color-surface-muted);border:1px solid var(--color-border-subtle);color:var(--color-text-tertiary)}.empty-state__title{font-size:var(--text-lg);font-weight:var(--weight-semibold);color:var(--color-text)}.empty-state__description{max-width:42ch;font-size:var(--text-md);color:var(--color-text-secondary);line-height:var(--leading-relaxed)}.empty-state__action{margin-top:var(--space-2)}.empty-state--compact{padding:var(--space-8) var(--space-4);border:none;background-color:transparent}.loading-state{display:flex;align-items:center;justify-content:center;gap:var(--space-3);padding:var(--space-10);color:var(--color-text-secondary)}.loading-state--full{flex:1;min-height:50vh}.loading-state__label{font-size:var(--text-md)}.popover{position:relative;display:inline-flex}.popover__trigger{display:inline-flex;align-items:center;gap:var(--space-1);height:34px;padding:0 var(--space-2);background-color:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--text-sm);cursor:pointer;transition:background-color var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast)}.popover__trigger:hover{background-color:var(--color-action-ghost-hover);color:var(--color-text)}.popover__panel{position:absolute;top:calc(100% + var(--space-1));z-index:var(--z-dropdown);min-width:12rem;background-color:var(--color-surface-raised);border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-md)}.popover__panel--right{right:0}.popover__panel--left{left:0}.badge{display:inline-flex;align-items:center;gap:var(--space-1);padding:1px var(--space-2);border-radius:var(--radius-round);font-size:var(--text-xs);font-weight:var(--weight-medium);line-height:1.6;white-space:nowrap;border:1px solid transparent}.badge--neutral{background-color:var(--color-surface-muted);border-color:var(--color-border-subtle);color:var(--color-text-secondary)}.badge--success{background-color:var(--color-success-bg);border-color:var(--color-success);color:var(--color-success)}.badge--warning{background-color:var(--color-warning-bg);border-color:var(--color-warning);color:var(--color-warning)}.badge--error{background-color:var(--color-error-bg);border-color:var(--color-error);color:var(--color-error)}.badge--info{background-color:var(--color-info-bg);border-color:var(--color-border);color:var(--color-text-secondary)}.search-input{display:flex;align-items:center;gap:var(--space-2);height:36px;padding:0 var(--space-2) 0 var(--space-3);background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.search-input:focus-within{border-color:var(--color-action-primary);box-shadow:inset 0 0 0 1px var(--color-action-primary)}.search-input__icon{color:var(--color-text-tertiary);flex-shrink:0}.search-input__field{flex:1;min-width:0;border:none;background:none;padding:0;font-size:var(--text-md);color:var(--color-text);outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.search-input__field::-webkit-search-cancel-button,.search-input__field::-webkit-search-decoration{display:none}.search-input__field::placeholder{color:var(--color-text-tertiary)}.search-input__affix,.search-input__clear{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.search-input__clear{width:22px;height:22px;border:none;border-radius:var(--radius-sm);background:none;color:var(--color-text-tertiary);cursor:pointer}.search-input__clear:hover{background-color:var(--color-action-ghost-hover);color:var(--color-text)}.page-header{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-4);flex-wrap:wrap}.page-header__text{display:flex;flex-direction:column;gap:var(--space-1);min-width:0}.page-header__title{font-size:var(--text-2xl);letter-spacing:-.01em;overflow-wrap:break-word}.page-header__description{max-width:62ch;font-size:var(--text-md);color:var(--color-text-secondary);line-height:var(--leading-relaxed)}.page-header__actions{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap}.panel{display:flex;flex-direction:column;min-width:0;background-color:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs)}.panel__header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border-subtle)}.panel__title{font-size:var(--text-base);font-weight:var(--weight-semibold)}.panel__action{display:inline-flex;align-items:center}.panel__body{padding:var(--space-5);flex:1;min-width:0}.panel-state{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-2) 0}.panel-state--error{color:var(--color-text-secondary);font-size:var(--text-md)}.skeleton{display:block;background-color:var(--gray-150);border-radius:var(--radius-sm);animation:skeleton-pulse 1.4s ease-in-out infinite}.skeleton--circle{border-radius:var(--radius-round)}.skeleton--box{border-radius:var(--radius-md)}.skeleton-text{display:flex;flex-direction:column;gap:var(--space-2);width:100%}@keyframes skeleton-pulse{0%,to{opacity:1}50%{opacity:.45}}.toast-region{position:fixed;top:calc(var(--topbar-height) + var(--space-3));right:var(--space-4);z-index:var(--z-toast);display:flex;flex-direction:column;gap:var(--space-2);width:min(22rem,calc(100vw - 2 * var(--space-4)));pointer-events:none}.toast{display:flex;align-items:flex-start;gap:var(--space-2);padding:var(--space-3) var(--space-3);background-color:var(--color-surface-raised);border:1px solid var(--color-border);border-left-width:3px;border-radius:var(--radius-md);box-shadow:var(--shadow-md);pointer-events:auto;animation:toast-in var(--transition-base)}@keyframes toast-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.toast__icon{display:inline-flex;margin-top:1px;color:var(--color-text-secondary);flex-shrink:0}.toast__message{flex:1;font-size:var(--text-sm);color:var(--color-text);line-height:var(--leading-normal)}.toast__close{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border:none;border-radius:var(--radius-sm);background:none;color:var(--color-text-tertiary);cursor:pointer;flex-shrink:0}.toast__close:hover{background-color:var(--color-action-ghost-hover);color:var(--color-text)}.toast--success{border-left-color:var(--color-success)}.toast--success .toast__icon{color:var(--color-success)}.toast--warning{border-left-color:var(--color-warning)}.toast--warning .toast__icon{color:var(--color-warning)}.toast--error{border-left-color:var(--color-error)}.toast--error .toast__icon{color:var(--color-error)}.toast--info{border-left-color:var(--color-border-strong)}.app-shell{display:flex;flex-direction:column;min-height:100dvh;background-color:var(--color-app-bg)}.app-shell__body{display:flex;flex:1;min-height:0;width:100%;max-width:var(--content-max-width);margin:0 auto}.app-shell__main{flex:1;min-width:0;padding:var(--space-8) var(--space-10)}.app-shell__main:focus{outline:none}.app-shell__scrim{display:none}@media (max-width: 960px){.app-shell__body{flex-direction:column}.app-shell__main{padding:var(--space-5) var(--space-4)}.app-shell__scrim{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:55;background-color:var(--color-overlay);opacity:0;pointer-events:none;transition:opacity var(--transition-base)}.app-shell__scrim--open{opacity:1;pointer-events:auto}}.sidebar{width:var(--sidebar-width);flex-shrink:0;background-color:var(--color-surface);border-right:1px solid var(--color-border-subtle);padding:var(--space-4) var(--space-3)}.sidebar__list{display:flex;flex-direction:column;gap:var(--space-1);list-style:none;margin:0;padding:0}.sidebar__link{display:flex;align-items:center;gap:var(--space-3);height:36px;padding:0 var(--space-3);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--text-md);font-weight:var(--weight-medium);transition:background-color var(--transition-fast),color var(--transition-fast)}.sidebar__link:hover{background-color:var(--color-action-ghost-hover);color:var(--color-text)}.sidebar__link--active{background-color:var(--color-app-bg);color:var(--color-text);box-shadow:inset 2px 0 0 var(--color-selected)}.sidebar__icon{color:currentColor;flex-shrink:0}@media (max-width: 960px){.sidebar{width:100%;border-right:none;border-bottom:1px solid var(--color-border-subtle);padding:var(--space-2) var(--space-3);overflow-x:auto}.sidebar__list{flex-direction:row;gap:var(--space-1)}.sidebar__link{height:32px;padding:0 var(--space-3);white-space:nowrap}.sidebar__link--active{box-shadow:inset 0 -2px 0 var(--color-selected)}}.topbar{position:sticky;top:0;z-index:50;background-color:var(--color-surface);border-bottom:1px solid var(--color-border-subtle);min-height:var(--topbar-height)}.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);min-height:var(--topbar-height);max-width:var(--content-max-width);margin:0 auto;padding:var(--space-2) var(--space-5);flex-wrap:wrap}.topbar__menu-btn{display:none;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--color-border);border-radius:var(--radius-md);background-color:transparent;color:var(--color-text-secondary);cursor:pointer}.topbar__menu-btn:hover{background-color:var(--color-action-ghost-hover);color:var(--color-text)}.topbar__search{flex:1;max-width:440px;min-width:0}.topbar__actions{display:flex;align-items:center;gap:var(--space-2);margin-left:auto}.topbar__control-label{font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--color-text-secondary)}.region-menu{display:flex;flex-direction:column;gap:var(--space-4);width:240px;padding:var(--space-4)}.region-menu__group{display:flex;flex-direction:column;gap:var(--space-2)}.region-menu__label{font-size:var(--text-xs);font-weight:var(--weight-semibold);text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-tertiary)}.region-menu__options{display:flex;flex-direction:column;gap:var(--space-1)}.region-menu__option{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:none;border:1px solid transparent;border-radius:var(--radius-md);font-size:var(--text-md);color:var(--color-text);cursor:pointer}.region-menu__option:hover,.region-menu__option:focus-visible{background-color:var(--color-action-ghost-hover)}.region-menu__option--active{border-color:var(--color-border-subtle);background-color:var(--color-surface-muted);font-weight:var(--weight-medium)}.notifications-menu__panel{width:min(22rem,calc(100vw - 2rem));overflow:hidden}.notifications-menu__header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-border-subtle)}.notifications-menu__title{font-size:var(--text-md);font-weight:var(--weight-semibold)}.notifications-menu__list{max-height:340px;overflow-y:auto;padding:var(--space-2)}.notifications-menu__hint{padding:var(--space-3);color:var(--color-text-tertiary);font-size:var(--text-md)}.notifications-menu__empty{display:flex;flex-direction:column;gap:var(--space-1);padding:var(--space-5) var(--space-4);text-align:center}.notifications-menu__empty-title{font-size:var(--text-md);font-weight:var(--weight-medium)}.notifications-menu__empty-body{font-size:var(--text-sm);color:var(--color-text-secondary)}.notification-item{display:flex;gap:var(--space-2);padding:var(--space-3);border-radius:var(--radius-md)}.notification-item:hover{background-color:var(--color-surface-muted)}.notification-item__dot{width:7px;height:7px;margin-top:6px;border-radius:var(--radius-round);background-color:var(--color-border-strong);flex-shrink:0}.notification-item[data-read=false] .notification-item__dot{background-color:var(--color-selected)}.notification-item__content{display:flex;flex-direction:column;gap:2px;min-width:0}.notification-item__title-row{display:flex;align-items:center;gap:var(--space-2)}.notification-item__title{font-size:var(--text-md);font-weight:var(--weight-medium)}.notification-item__body{margin:0;font-size:var(--text-sm);color:var(--color-text-secondary);line-height:var(--leading-normal)}.notification-item__time{font-size:var(--text-xs);color:var(--color-text-tertiary)}.profile-menu__avatar{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:var(--radius-round);background-color:var(--color-action-primary);color:var(--color-on-action-primary);font-size:var(--text-xs);font-weight:var(--weight-semibold);letter-spacing:.02em}@media (max-width: 960px){.topbar__menu-btn{display:inline-flex}}@media (max-width: 780px){.topbar__create,.profile-menu__name{display:none}}@media (max-width: 640px){.topbar__control-label{display:none}.topbar__search{order:10;flex-basis:100%;max-width:none}}.create-dialog{display:flex;flex-direction:column;gap:var(--space-3)}.create-dialog__hint{color:var(--color-text-tertiary);font-size:var(--text-md);padding:var(--space-2) 0}.create-dialog__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-1);max-height:320px;overflow-y:auto}.create-dialog__item{display:flex;align-items:center;gap:var(--space-3);width:100%;padding:var(--space-2) var(--space-3);background:none;border:1px solid transparent;border-radius:var(--radius-md);text-align:left;cursor:pointer;color:inherit}.create-dialog__item:hover,.create-dialog__item:focus-visible{background-color:var(--color-action-ghost-hover);border-color:var(--color-border-subtle)}.create-dialog__item-icon{display:flex;align-items:center;justify-content:center;width:34px;height:34px;flex-shrink:0;border-radius:var(--radius-md);background-color:var(--color-surface-muted);border:1px solid 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