.admin-root{--admin-text-primary:#2a2a2a;--admin-text-secondary:#5a5246;--admin-text-tertiary:#7a6e62;--admin-text-placeholder:#9a8e82;--admin-bg:#f7f3ee;--admin-bg-subtle:#f0ebe3;--admin-card-bg:#fff;--admin-border:#d8d0c5;--admin-border-subtle:#ede8e0;--admin-accent:#a8586a;--admin-accent-hover:#94485a;--admin-accent-soft:#f5e4e7;--admin-success:#6b8a5c;--admin-warning:#b88830;--admin-danger:#a84840;--admin-font-system:"Noto Sans TC", "PingFang TC", "Hiragino Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;--admin-font-heading:"Zen Maru Gothic", "Noto Serif TC", "Noto Sans TC", "PingFang TC", -apple-system, serif;--admin-font-accent:"Caveat", "Noto Serif TC", cursive;--admin-radius-sm:8px;--admin-radius-md:12px;--admin-radius-lg:16px;--admin-radius-pill:980px;--admin-shadow-card:0 1px 3px #3a2a1c0a;--admin-shadow-card-hover:0 4px 16px #3a2a1c14;--admin-shadow-modal:0 12px 48px #3a2a1c24;background-color:var(--admin-bg);color:var(--admin-text-primary);font-family:var(--admin-font-system);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--color-text:var(--admin-text-primary);--color-textSecondary:var(--admin-text-secondary);--color-textMuted:var(--admin-text-tertiary);--color-cardBg:var(--admin-card-bg);--color-cardBorder:var(--admin-border-subtle);--color-bg:var(--admin-bg);--color-bgSecondary:var(--admin-border-subtle);--color-primary:var(--admin-accent);--color-accent:var(--admin-accent);--color-available:var(--admin-success);--radius-full:var(--admin-radius-pill);--radius-md:var(--admin-radius-md);--radius-sm:var(--admin-radius-sm);--radius-lg:var(--admin-radius-lg);--motion-fast:.15s;--motion-base:.24s;--motion-slow:.4s;--ease-spring:cubic-bezier(.34, 1.56, .64, 1);--ease-smooth:cubic-bezier(.16, 1, .3, 1);--glow-accent:0 0 0 3px #a8586a2e;--glow-focus:0 0 0 3px #a8586a52, 0 0 16px #a8586a1f;--glow-success:0 0 0 3px 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.text-\[11px\]{color:var(--admin-text-tertiary);font-size:12px;line-height:1.4}.admin-h1{letter-spacing:-.01em;color:var(--admin-text-primary);font-size:30px;font-weight:600;line-height:1.2;font-family:var(--admin-font-heading);margin:0}@media (min-width:768px){.admin-h1{font-size:36px}}.admin-h2{letter-spacing:-.005em;color:var(--admin-text-primary);font-size:22px;font-weight:600;line-height:1.25;font-family:var(--admin-font-heading);margin:0}@media (min-width:768px){.admin-h2{font-size:26px}}.admin-h3{color:var(--admin-text-primary);font-size:18px;font-weight:600;line-height:1.3;font-family:var(--admin-font-heading);margin:0}@media (min-width:768px){.admin-h3{font-size:20px}}.admin-headline{color:var(--admin-text-primary);font-size:17px;font-weight:600;line-height:1.3}.admin-body{color:var(--admin-text-secondary);font-size:16px;font-weight:400;line-height:1.5}@media (min-width:768px){.admin-body{font-size:17px}}.admin-callout{color:var(--admin-text-secondary);font-size:15px;font-weight:400;line-height:1.4}@media (min-width:768px){.admin-callout{font-size:16px}}.admin-subhead{color:var(--admin-text-secondary);font-size:14px;font-weight:500;line-height:1.35}@media (min-width:768px){.admin-subhead{font-size:15px}}.admin-footnote{color:var(--admin-text-tertiary);font-size:13px;font-weight:400;line-height:1.4}.admin-caption{letter-spacing:.01em;color:var(--admin-text-tertiary);font-size:12px;font-weight:500;line-height:1.3}.admin-mono-tabular{font-family:var(--font-tabular);font-variant-numeric:tabular-nums;letter-spacing:-.02em}.admin-card{background:var(--admin-card-bg);border:1px solid var(--admin-border-subtle);border-radius:var(--admin-radius-lg);box-shadow:var(--admin-shadow-card);transition:border-color var(--motion-base) var(--ease-smooth), box-shadow var(--motion-base) var(--ease-smooth), transform var(--motion-base) var(--ease-smooth);padding:20px}@media (min-width:768px){.admin-card{padding:24px}}.admin-card--hover:hover{border-color:var(--admin-border);box-shadow:var(--admin-shadow-card-hover);transform:translateY(-1px)}.admin-card--compact,.admin-card--compact:where(){padding:16px}.admin-btn{border-radius:var(--admin-radius-pill);cursor:pointer;height:44px;transition:background-color var(--motion-base) var(--ease-smooth), color var(--motion-base) var(--ease-smooth), opacity var(--motion-base) var(--ease-smooth), box-shadow var(--motion-base) var(--ease-smooth);white-space:nowrap;border:none;justify-content:center;align-items:center;gap:6px;padding:0 20px;font-family:inherit;font-size:15px;font-weight:500;line-height:1;display:inline-flex}.admin-btn:focus-visible{outline:3px solid color-mix(in srgb, var(--admin-accent) 40%, transparent);outline-offset:2px}.admin-btn:disabled{opacity:.45;cursor:not-allowed}.admin-btn--primary{background:var(--admin-accent);color:#fff}.admin-btn--primary:hover:not(:disabled){background:var(--admin-accent-hover)}.admin-btn--secondary{color:var(--admin-accent);border:1px solid var(--admin-border);border-radius:var(--admin-radius-md);background:0 0}.admin-btn--secondary:hover:not(:disabled){background:color-mix(in srgb, var(--admin-accent) 8%, transparent)}.admin-btn--ghost{color:var(--admin-text-secondary);border-radius:var(--admin-radius-md);background:0 0;height:36px;padding:0 12px;font-size:14px}.admin-btn--ghost:hover:not(:disabled){color:var(--admin-text-primary);background:var(--admin-border-subtle)}.admin-btn--danger{background:var(--admin-danger);color:#fff}.admin-btn--danger:hover:not(:disabled){opacity:.88}.admin-btn--sm{height:36px;padding:0 14px;font-size:14px}.admin-input{width:100%;height:44px;color:var(--admin-text-primary);background:var(--admin-card-bg);border:1px solid var(--admin-border);border-radius:var(--admin-radius-md);transition:border-color var(--motion-base) var(--ease-smooth), box-shadow var(--motion-base) var(--ease-smooth);padding:0 14px;font-family:inherit;font-size:16px}.admin-input::placeholder{color:var(--admin-text-placeholder)}.admin-input:focus{border-color:var(--admin-accent);box-shadow:0 0 0 3px color-mix(in srgb, var(--admin-accent) 15%, transparent);outline:none}.admin-input:disabled{opacity:.55;cursor:not-allowed}.admin-input--textarea{resize:vertical;height:auto;min-height:96px;padding:12px 14px;line-height:1.5}.admin-input--number{font-variant-numeric:tabular-nums}.admin-pill{border-radius:var(--admin-radius-pill);letter-spacing:.01em;white-space:nowrap;align-items:center;gap:4px;padding:4px 10px;font-size:12px;font-weight:500;display:inline-flex}.admin-pill--success{background:color-mix(in srgb, var(--admin-success) 12%, transparent);color:var(--admin-success)}.admin-pill--danger{background:color-mix(in srgb, var(--admin-danger) 12%, transparent);color:var(--admin-danger)}.admin-pill--warning{background:color-mix(in srgb, var(--admin-warning) 14%, transparent);color:var(--admin-warning)}.admin-pill--muted{background:var(--admin-border-subtle);color:var(--admin-text-tertiary)}.admin-pill--accent{background:color-mix(in srgb, var(--admin-accent) 10%, transparent);color:var(--admin-accent)}.admin-section{margin-bottom:40px}@media (min-width:768px){.admin-section{margin-bottom:48px}}.admin-section__header{margin-bottom:20px}.admin-divider{background:var(--admin-border-subtle);border:0;height:1px;margin:32px 0}.admin-tabs{background:var(--admin-border-subtle);border-radius:var(--admin-radius-pill);gap:2px;width:fit-content;padding:4px;display:flex}.admin-tabs__item{border-radius:var(--admin-radius-pill);color:var(--admin-text-secondary);cursor:pointer;transition:background-color var(--motion-base) var(--ease-smooth), color var(--motion-base) var(--ease-smooth);background:0 0;border:0;padding:8px 16px;font-family:inherit;font-size:14px;font-weight:500}.admin-tabs__item:hover{color:var(--admin-text-primary)}.admin-tabs__item--active{background:var(--admin-card-bg);color:var(--admin-text-primary);box-shadow:0 1px 2px #0000000a}.admin-link{color:var(--admin-accent);transition:color var(--motion-base) var(--ease-smooth);text-decoration:none}.admin-link:hover{text-underline-offset:2px;text-decoration:underline;text-decoration-thickness:1px}.admin-nav{z-index:40;-webkit-backdrop-filter:saturate(180%)blur(20px);border-bottom:1px solid var(--admin-border-subtle);background:#f7f3eed1;position:sticky;top:0}.admin-nav__inner{align-items:center;gap:12px;max-width:72rem;height:52px;margin:0 auto;padding:0 16px;display:flex}@media (min-width:768px){.admin-nav__inner{padding:0 24px}}.admin-nav__brand{letter-spacing:.08em;color:var(--admin-text-primary);font-size:19px;font-weight:600;font-family:var(--admin-font-heading);text-decoration:none}.admin-nav__links{scrollbar-width:none;flex:1;gap:2px;overflow-x:auto}@media (min-width:768px){.admin-nav__links{display:flex}}.admin-nav__links::-webkit-scrollbar{display:none}.admin-nav__link{height:36px;color:var(--admin-text-secondary);border-radius:var(--admin-radius-md);white-space:nowrap;transition:background-color var(--motion-base) var(--ease-smooth), color var(--motion-base) var(--ease-smooth);align-items:center;padding:0 12px;font-size:14px;font-weight:500;text-decoration:none}@media (min-width:768px){.admin-nav__link{display:inline-flex}}.admin-nav__link:hover,.admin-nav__link--active{color:var(--admin-text-primary);background:var(--admin-border-subtle)}@media (prefers-reduced-motion:reduce){.admin-root,.admin-root *{transition-duration:0s!important;animation-duration:0s!important}}.admin-sidebar{background:var(--admin-card-bg);border-right:1px solid var(--admin-border-subtle);width:228px;transition:width var(--motion-base) var(--ease-smooth);flex-direction:column;flex-shrink:0;padding:20px 12px;display:none;overflow-y:auto}@media (min-width:768px){.admin-sidebar{display:flex}}@media (min-width:768px) and (max-width:1023px){.admin-sidebar{width:64px}.admin-sidebar__label,.admin-sidebar__group-label{display:none}.admin-sidebar__item{justify-content:center;padding:10px}}.admin-sidebar__group{margin-bottom:18px}.admin-sidebar__group-label{color:var(--admin-text-tertiary);text-transform:uppercase;letter-spacing:.08em;padding:0 8px 6px;font-size:11px;font-weight:600}.admin-sidebar__list{flex-direction:column;gap:2px;margin:0;padding:0;list-style:none;display:flex}.admin-sidebar__item{border-radius:var(--admin-radius-sm);color:var(--admin-text-secondary);min-height:44px;transition:background var(--motion-fast) var(--ease-smooth), color var(--motion-fast) var(--ease-smooth), box-shadow var(--motion-fast) var(--ease-smooth);align-items:center;gap:10px;padding:8px 10px;font-size:14px;line-height:1.3;text-decoration:none;display:flex}.admin-sidebar__item:hover{background:var(--admin-bg-subtle);color:var(--admin-text-primary)}.admin-sidebar__item:focus-visible{box-shadow:var(--glow-focus);color:var(--admin-text-primary);outline:none}.admin-sidebar__item.is-active{background:var(--admin-accent-soft);color:var(--admin-accent);font-weight:600}.admin-sidebar__icon{flex-shrink:0}.admin-sidebar__label{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.admin-tabbar{background:var(--admin-card-bg);border-top:1px solid var(--admin-border-subtle);box-shadow:var(--elev-3);padding-bottom:env(safe-area-inset-bottom);z-index:40;justify-content:space-around;align-items:stretch;display:flex;position:sticky;bottom:0}@media (min-width:768px){.admin-tabbar{display:none}}.admin-tabbar__item{min-height:56px;color:var(--admin-text-tertiary);cursor:pointer;transition:color var(--motion-fast) var(--ease-smooth);-webkit-tap-highlight-color:transparent;background:0 0;border:none;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:4px;padding:8px 4px;font-size:11px;text-decoration:none;display:flex}.admin-tabbar__item.is-active{color:var(--admin-accent)}.admin-tabbar__item:active{background:var(--admin-bg-subtle)}.admin-tabbar__label{line-height:1}.admin-tabbar-sheet-backdrop{z-index:50;animation:sheet-fade-in var(--motion-base) var(--ease-smooth);-webkit-backdrop-filter:saturate(120%)blur(4px);background:#2a2a2a59;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.admin-tabbar-sheet{background:var(--admin-card-bg);border-radius:var(--admin-radius-lg) var(--admin-radius-lg) 0 0;width:100%;max-width:640px;padding:16px 20px calc(16px + env(safe-area-inset-bottom));box-shadow:var(--elev-5);animation:sheet-slide-up var(--motion-slow) var(--ease-spring)}.admin-tabbar-sheet__handle{background:var(--admin-border);border-radius:999px;width:40px;height:4px;margin:0 auto 12px}.admin-tabbar-sheet__title{color:var(--admin-text-primary);font-size:16px;font-weight:600;font-family:var(--admin-font-heading);margin-bottom:8px}.admin-tabbar-sheet__list{max-height:60vh;margin:0;padding:0;list-style:none;overflow-y:auto}.admin-tabbar-sheet__row{color:var(--admin-text-primary);border-bottom:1px solid var(--admin-border-subtle);align-items:center;gap:12px;min-height:48px;padding:14px 8px;font-size:15px;text-decoration:none;display:flex}.admin-tabbar-sheet__row:last-child{border-bottom:none}.admin-tabbar-sheet__row:active{background:var(--admin-bg-subtle)}@keyframes sheet-fade-in{0%{background:#2a2a2a00}to{background:#2a2a2a59}}@keyframes sheet-slide-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.admin-shell{background:var(--admin-bg);flex-direction:column;min-height:100dvh;display:flex}.admin-shell__body{flex:1;min-height:0;display:flex}.admin-shell__main{flex:1;min-width:0;padding-top:24px;padding-bottom:32px;overflow-x:hidden}@media (min-width:768px){.admin-shell__main{padding-top:32px;padding-bottom:48px}}.admin-shell__inner{width:100%;max-width:1100px;margin:0 auto}.admin-page-template{flex-direction:column;gap:20px;display:flex}.admin-page-template__title-row{align-items:center;gap:10px;display:inline-flex}.admin-page-template__title-icon{border-radius:var(--admin-radius-sm);background:var(--admin-accent-soft);width:32px;height:32px;color:var(--admin-accent);flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.admin-page-template__howto{animation:fade-in var(--motion-base) var(--ease-smooth)}.admin-page-template__filterbar{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.admin-page-template__content{min-height:120px}.admin-page-template__batchbar{bottom:calc(56px + env(safe-area-inset-bottom));z-index:30;background:var(--admin-card-bg);border:1px solid var(--admin-border);border-radius:var(--admin-radius-md);box-shadow:var(--elev-3);animation:slide-up-in var(--motion-base) var(--ease-spring);padding:12px 16px;position:sticky}@media (min-width:768px){.admin-page-template__batchbar{bottom:20px}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-up-in{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.admin-undo-toast-stack{bottom:calc(76px + env(safe-area-inset-bottom));z-index:45;flex-direction:column;gap:8px;max-width:calc(100vw - 40px);display:flex;position:fixed;right:20px}@media (min-width:768px){.admin-undo-toast-stack{bottom:20px}}.admin-undo-toast{background:var(--admin-text-primary);color:var(--admin-card-bg);border-radius:var(--admin-radius-md);box-shadow:var(--elev-4);animation:slide-up-in var(--motion-base) var(--ease-spring);align-items:center;gap:12px;padding:12px 16px;font-size:14px;display:flex}.admin-undo-toast__label{flex:1}.admin-undo-toast__btn{color:var(--admin-accent-soft);cursor:pointer;border-radius:var(--admin-radius-sm);background:0 0;border:none;padding:4px 8px;font-weight:600}.admin-undo-toast__btn:hover{background:#ffffff1a}.admin-undo-toast__btn:focus-visible{box-shadow:0 0 0 2px var(--admin-accent-soft);outline:none}.admin-tour-backdrop{z-index:200;animation:fade-in var(--motion-fast) ease;background:#2a2a2a8c;position:fixed;inset:0}.admin-tour-spotlight{z-index:201;border-radius:var(--admin-radius-md);pointer-events:none;transition:top var(--motion-base) var(--ease-smooth), left var(--motion-base) var(--ease-smooth), width var(--motion-base) var(--ease-smooth), height var(--motion-base) var(--ease-smooth);background:0 0;position:fixed;box-shadow:0 0 0 4px #a8586a99,0 0 0 9999px #2a2a2a8c}.admin-tour-balloon{z-index:202;background:var(--admin-card-bg);border-radius:var(--admin-radius-lg);box-shadow:var(--elev-5);animation:slide-up-in var(--motion-base) var(--ease-spring);width:320px;padding:20px}.admin-tour-balloon__header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.admin-tour-balloon__step{color:var(--admin-text-tertiary);letter-spacing:.04em;text-transform:uppercase;font-size:12px;font-weight:600}.admin-tour-balloon__close{border-radius:var(--admin-radius-sm);width:28px;height:28px;color:var(--admin-text-tertiary);cursor:pointer;transition:background var(--motion-fast) ease, color var(--motion-fast) ease;background:0 0;border:none;justify-content:center;align-items:center;display:inline-flex}.admin-tour-balloon__close:hover{background:var(--admin-bg-subtle);color:var(--admin-text-primary)}.admin-tour-balloon__close:focus-visible{box-shadow:var(--glow-focus);outline:none}.admin-tour-balloon__title{font-family:var(--admin-font-heading);color:var(--admin-text-primary);margin:0 0 8px;font-size:17px;font-weight:600;line-height:1.3}.admin-tour-balloon__body{color:var(--admin-text-secondary);margin:0 0 16px;font-size:14px;line-height:1.55}.admin-tour-balloon__footer{justify-content:flex-end;align-items:center;gap:8px;display:flex}.admin-tour-balloon__skip{color:var(--admin-text-tertiary);cursor:pointer;border-radius:var(--admin-radius-sm);transition:color var(--motion-fast) ease;background:0 0;border:none;padding:8px 12px;font-size:14px}.admin-tour-balloon__skip:hover{color:var(--admin-text-secondary)}.admin-tour-balloon__skip:focus-visible{box-shadow:var(--glow-focus);outline:none}.admin-tour-balloon__next{background:var(--admin-accent);color:#fff;border-radius:var(--admin-radius-pill);cursor:pointer;transition:background var(--motion-fast) ease, box-shadow var(--motion-fast) ease;border:none;align-items:center;gap:6px;min-height:36px;padding:8px 16px;font-size:14px;font-weight:600;display:inline-flex}.admin-tour-balloon__next:hover{background:var(--admin-accent-hover)}.admin-tour-balloon__next:focus-visible{box-shadow:var(--glow-focus);outline:none}.admin-tour-replay{border:1px solid var(--admin-border-subtle);border-radius:var(--admin-radius-sm);width:32px;height:32px;color:var(--admin-text-tertiary);cursor:pointer;transition:border-color var(--motion-fast) ease, color var(--motion-fast) ease, background var(--motion-fast) ease;bottom:calc(80px + env(safe-area-inset-bottom));z-index:10;background:0 0;justify-content:center;align-items:center;display:inline-flex;position:fixed;left:16px}.admin-tour-replay:hover{color:var(--admin-accent);border-color:var(--admin-accent);background:var(--admin-accent-soft)}.admin-tour-replay:focus-visible{box-shadow:var(--glow-focus);outline:none}@media (min-width:768px){.admin-tour-replay{bottom:16px;left:240px}}@media (prefers-reduced-motion:reduce){.admin-tour-balloon,.admin-tour-backdrop{animation:none}}.admin-teaching-toggle{background:var(--admin-bg-subtle);border:1px solid var(--admin-border-subtle);border-radius:var(--admin-radius-pill);color:var(--admin-text-secondary);cursor:pointer;transition:background 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