:root{--color-bg:oklch(96.5% .018 75);--color-bg-soft:oklch(93% .03 70);--color-surface:oklch(99% .004 90);--color-surface-sunken:oklch(95.5% .012 80);--color-border:oklch(88% .02 70);--color-ink:oklch(24% .03 45);--color-ink-soft:oklch(46% .025 50);--color-ink-faint:oklch(64% .02 55);--color-fox:oklch(70% .16 55);--color-fox-strong:oklch(58% .17 45);--color-fox-tint:oklch(93% .045 60);--color-leaf:oklch(68% .15 149);--color-leaf-strong:oklch(54% .13 149);--color-leaf-tint:oklch(93% .05 149);--color-berry:oklch(62% .19 22);--color-berry-strong:oklch(50% .18 22);--color-berry-tint:oklch(93% .05 22);--color-sky:oklch(66% .12 232);--color-sky-strong:oklch(54% .12 232);--color-sky-tint:oklch(93% .03 232);--color-gold:oklch(78% .15 85);--color-gold-strong:oklch(60% .14 70);--text-xs:clamp(.75rem, .72rem + .15vw, .8125rem);--text-sm:clamp(.875rem, .84rem + .15vw, .9375rem);--text-base:clamp(1rem, .95rem + .2vw, 1.0625rem);--text-lg:clamp(1.125rem, 1.05rem + .3vw, 1.25rem);--text-xl:clamp(1.375rem, 1.2rem + .6vw, 1.75rem);--text-2xl:clamp(1.75rem, 1.5rem + 1vw, 2.25rem);--text-hero:clamp(2.25rem, 1.7rem + 2vw, 3.25rem);--text-display:clamp(2.5rem, 1.9rem + 2.6vw, 4rem);--space-3xs:.25rem;--space-2xs:.5rem;--space-xs:.75rem;--space-sm:1rem;--space-md:1.5rem;--space-lg:2rem;--space-xl:3rem;--space-section:clamp(2rem, 1.5rem + 3vw, 5rem);--radius-sm:10px;--radius-md:16px;--radius-lg:24px;--radius-pill:999px;--shadow-sm:0 1px 2px oklch(30% .04 50/.07), 0 1px 1px oklch(30% .04 50/.04);--shadow-md:0 10px 24px oklch(30% .05 50/.1), 0 2px 8px oklch(30% .05 50/.06);--shadow-lg:0 20px 48px oklch(30% .06 50/.16), 0 8px 16px oklch(30% .06 50/.08);--duration-fast:.15s;--duration-normal:.25s;--duration-slow:.42s;--ease-out-expo:cubic-bezier(.16, 1, .3, 1);--ease-spring:cubic-bezier(.34, 1.56, .64, 1)}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{min-height:100vh;font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,-apple-system,BlinkMacSystemFont,sans-serif;font-size:var(--text-base);color:var(--color-ink);background:var(--color-bg);background-image:radial-gradient(circle at 12% 8%, var(--color-fox-tint) 0%, transparent 42%), radial-gradient(circle at 88% 92%, var(--color-sky-tint) 0%, transparent 38%);background-attachment:fixed;line-height:1.5}h1,h2,h3{letter-spacing:-.01em;font-weight:800;line-height:1.15}button,input,select{font:inherit;color:inherit}a{color:var(--color-fox-strong);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:2.5px solid var(--color-fox);outline-offset:2px;border-radius:var(--radius-sm)}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.page{max-width:640px;min-height:100vh;padding:var(--space-lg) var(--space-md) var(--space-xl);gap:var(--space-lg);flex-direction:column;margin-inline:auto;display:flex}.page-narrow{max-width:420px}.card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:var(--space-md)}.card-flush{padding:0;overflow:hidden}.btn{justify-content:center;align-items:center;gap:var(--space-2xs);border-radius:var(--radius-pill);font-size:var(--text-base);cursor:pointer;transition:transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo), opacity var(--duration-fast) var(--ease-out-expo);border:none;padding:.85em 1.6em;font-weight:700;display:inline-flex}.btn:active{transform:scale(.97)}.btn:disabled{cursor:not-allowed;opacity:.45;transform:none}.btn-block{width:100%}.btn-primary{background:var(--color-fox);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover:not(:disabled){background:var(--color-fox-strong);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-leaf{background:var(--color-leaf-tint);color:var(--color-leaf-strong)}.btn-leaf:hover:not(:disabled){background:var(--color-leaf);color:#fff}.btn-berry{background:var(--color-berry-tint);color:var(--color-berry-strong)}.btn-berry:hover:not(:disabled){background:var(--color-berry);color:#fff}.btn-sky{background:var(--color-sky-strong);color:#fff;box-shadow:var(--shadow-sm)}.btn-sky:hover:not(:disabled){background:var(--color-sky-strong);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-ghost{color:var(--color-ink-soft);border:1.5px solid var(--color-border);background:0 0}.btn-ghost:hover:not(:disabled){border-color:var(--color-ink-soft);color:var(--color-ink)}.field{border:1.5px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);width:100%;font-size:var(--text-base);transition:border-color var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo);padding:.85em 1em}.field:focus-visible{border-color:var(--color-fox);box-shadow:0 0 0 3px var(--color-fox-tint)}.select{border:1.5px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);width:100%;font-size:var(--text-sm);cursor:pointer;padding:.75em 1em;font-weight:600}.select:focus-visible{border-color:var(--color-fox)}.eyebrow{font-size:var(--text-xs);letter-spacing:.08em;text-transform:uppercase;color:var(--color-ink-faint);font-weight:700}.card-title{font-size:var(--text-lg);margin-bottom:var(--space-sm)}.stack{gap:var(--space-sm);flex-direction:column;display:flex}.thumb{object-fit:cover;border-radius:var(--radius-sm);width:2rem;height:2rem;display:block}.thumb-sm{width:1.5rem;height:1.5rem}.pagination{justify-content:center;align-items:center;gap:var(--space-sm);padding-top:var(--space-sm);font-size:var(--text-sm);color:var(--color-ink-soft);display:flex}.alert{border-radius:var(--radius-md);padding:var(--space-xs) var(--space-sm);background:var(--color-berry-tint);color:var(--color-berry-strong);font-weight:600;font-size:var(--text-sm)}.game-reward{color:var(--color-gold-strong);background:var(--color-fox-tint);border-radius:var(--radius-pill);font-weight:700;font-size:var(--text-sm);padding:.4em 1em}.loading-state{color:var(--color-ink-faint);padding:var(--space-lg) 0;text-align:center;font-weight:600}.admin-shell{align-items:flex-start;min-height:100vh;display:flex}.admin-sidebar{gap:var(--space-lg);width:240px;height:100vh;padding:var(--space-md) var(--space-sm);background:var(--color-surface);border-right:1px solid var(--color-border);flex-direction:column;flex-shrink:0;display:flex;position:sticky;top:0;overflow-y:auto}.admin-brand{align-items:center;gap:var(--space-2xs);padding-inline:var(--space-xs);font-size:var(--text-lg);color:var(--color-ink);font-weight:800;display:flex}.admin-nav{gap:var(--space-3xs);flex-direction:column;display:flex}.admin-nav-link{padding:.65em var(--space-xs);border-radius:var(--radius-md);font-size:var(--text-sm);color:var(--color-ink-soft);transition:background-color var(--duration-fast) var(--ease-out-expo), color var(--duration-fast) var(--ease-out-expo);font-weight:600;display:block}.admin-nav-link:hover{background:var(--color-sky-tint);color:var(--color-sky-strong);text-decoration:none}.admin-nav-link.is-active{background:var(--color-sky-strong);color:#fff}.admin-content{flex-direction:column;flex:1;min-width:0;display:flex}.admin-topbar{justify-content:space-between;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex}.admin-topbar-user{align-items:center;gap:var(--space-xs);font-size:var(--text-sm);color:var(--color-ink-soft);font-weight:600;display:flex}.admin-main{width:100%;max-width:1080px;padding:var(--space-lg);gap:var(--space-lg);flex-direction:column;flex:1;margin-inline:auto;display:flex}.admin-page-header{gap:var(--space-3xs);flex-direction:column;display:flex}.admin-page-header p{color:var(--color-ink-soft);font-size:var(--text-sm)}@media (width<=768px){.admin-shell{flex-direction:column}.admin-sidebar{border-right:none;border-bottom:1px solid var(--color-border);width:100%;height:auto;position:static}.admin-nav{flex-flow:wrap}.admin-main{padding:var(--space-md)}}.table-scroll{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow-x:auto}.data-table{border-collapse:collapse;width:100%;min-width:480px;font-size:var(--text-sm)}.data-table th{padding:var(--space-xs) var(--space-sm);border-bottom:1.5px solid var(--color-border);font-size:var(--text-xs);letter-spacing:.06em;text-transform:uppercase;color:var(--color-ink-faint);text-align:left;white-space:nowrap;font-weight:700}.data-table td{padding:var(--space-xs) var(--space-sm);border-bottom:1px solid var(--color-border);vertical-align:middle}.word-phonetic{color:var(--color-ink-soft);white-space:nowrap;font-family:ui-monospace,SF Mono,Menlo,monospace}.text-muted{color:var(--color-ink-soft);opacity:.6}.data-table tbody tr:hover{background:var(--color-surface-sunken)}.data-table tbody tr:last-child td{border-bottom:none}.data-table-expand td{background:var(--color-surface-sunken)}.row-actions{gap:var(--space-3xs);flex-wrap:wrap;display:flex}.toolbar{align-items:center;gap:var(--space-xs);flex-wrap:wrap;display:flex}.toolbar .field,.toolbar .select{flex:1;width:auto;min-width:160px}.form-grid{gap:var(--space-xs);grid-template-columns:repeat(auto-fit,minmax(160px,1fr));align-items:end;display:grid}.form-actions{gap:var(--space-xs);display:flex}.badge{align-items:center;gap:var(--space-3xs);border-radius:var(--radius-pill);font-size:var(--text-xs);white-space:nowrap;padding:.3em .85em;font-weight:700;display:inline-flex}.badge-sky{background:var(--color-sky-tint);color:var(--color-sky-strong)}.badge-leaf{background:var(--color-leaf-tint);color:var(--color-leaf-strong)}.badge-muted{background:var(--color-surface-sunken);color:var(--color-ink-faint)}.btn-sm{font-size:var(--text-xs);padding:.5em 1.1em}.tier-list{gap:var(--space-2xs);flex-direction:column;list-style:none;display:flex}.tier-chip{align-items:center;gap:var(--space-xs);padding:var(--space-2xs) var(--space-sm);background:var(--color-surface-sunken);border-radius:var(--radius-md);font-size:var(--text-sm);display:flex}.tier-chip-emoji{font-size:1.25rem;line-height:1}.tier-chip-label{flex:1}.word-picker-list{gap:var(--space-3xs);border:1px solid var(--color-border);border-radius:var(--radius-md);max-height:220px;padding:var(--space-2xs);flex-direction:column;list-style:none;display:flex;overflow-y:auto}.word-picker-item{align-items:center;gap:var(--space-2xs);padding:var(--space-3xs) var(--space-2xs);border-radius:var(--radius-sm);font-size:var(--text-sm);cursor:pointer;display:flex}.word-picker-item:hover{background:var(--color-surface-sunken)}.quiz-type-picker{align-items:center;gap:var(--space-xs);margin-top:var(--space-2xs);font-size:var(--text-sm);flex-wrap:wrap;display:flex}.quiz-type-picker-label{color:var(--color-ink-faint);font-weight:600}.quiz-type-option{align-items:center;gap:var(--space-3xs);cursor:pointer;display:inline-flex}.quiz-type-cell{font-size:var(--text-sm);white-space:nowrap}.gallery{gap:var(--space-xs);margin-bottom:var(--space-sm);flex-wrap:wrap;display:flex}.gallery-item{align-items:center;gap:var(--space-3xs);padding:var(--space-2xs);border:1.5px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);flex-direction:column;display:flex}.gallery-item.is-primary{border-color:var(--color-gold-strong);box-shadow:0 0 0 2px var(--color-gold-strong) inset}.gallery-item img{object-fit:cover;border-radius:var(--radius-sm);width:60px;height:60px;display:block}.gallery-item-actions{gap:var(--space-3xs);display:flex}.choice-question{align-items:center;gap:var(--space-xs);text-align:center;flex-direction:column;display:flex}.choice-visual{justify-content:center;align-items:center;height:96px;display:flex}.choice-visual img{border-radius:var(--radius-md);object-fit:cover;max-width:160px;max-height:96px}.choice-emoji{font-size:3.5rem}.choice-word{font-size:var(--text-2xl);letter-spacing:.02em}.choice-hint{color:var(--color-ink-faint);font-size:var(--text-sm);font-weight:600}.choice-options{gap:var(--space-2xs);flex-direction:column;width:100%;display:flex}.choice-option{border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);width:100%;font-weight:700;font-size:var(--text-base);cursor:pointer;transition:transform var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo);-webkit-line-clamp:2;-webkit-box-orient:vertical;padding:.8em 1em;display:-webkit-box;overflow:hidden}.choice-option:hover:not(:disabled){border-color:var(--color-fox);transform:translateY(-1px)}.choice-option:disabled{cursor:default}.choice-option.is-correct{border-color:var(--color-leaf);background:var(--color-leaf-tint);color:var(--color-leaf-strong)}.choice-option.is-wrong{border-color:var(--color-berry);background:var(--color-berry-tint);color:var(--color-berry-strong);animation:choice-shake var(--duration-normal) var(--ease-out-expo)}.choice-option.is-muted{opacity:.5}@keyframes choice-shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.progress-bar{align-items:center;gap:var(--space-xs);display:flex}.progress-bar-track{border-radius:var(--radius-pill);background:var(--color-surface-sunken);flex:1;height:8px;overflow:hidden}.progress-bar-fill{background:var(--color-fox);border-radius:var(--radius-pill);height:100%;transition:width var(--duration-normal) var(--ease-out-expo)}.progress-bar-label{font-size:var(--text-xs);color:var(--color-ink-faint);flex-shrink:0;font-weight:700}.spell-question{gap:var(--space-sm);flex-direction:column;display:flex}.spell-prompt{align-items:center;gap:var(--space-2xs);text-align:center;flex-direction:column;display:flex}.spell-visual{justify-content:center;align-items:center;height:80px;display:flex}.spell-visual img{border-radius:var(--radius-md);object-fit:cover;max-width:140px;max-height:80px}.spell-emoji{font-size:3rem}.spell-meaning{font-size:var(--text-lg);font-weight:800}.spell-note{font-size:var(--text-sm);color:var(--color-ink-faint)}.spell-slots{justify-content:center;gap:var(--space-3xs);flex-wrap:wrap;display:flex}.spell-slot{border-bottom:3px solid var(--color-border);width:2.1rem;height:2.6rem;font-size:var(--text-xl);text-transform:lowercase;color:var(--color-ink);justify-content:center;align-items:center;font-weight:800;display:inline-flex}.spell-slot.is-filled{border-bottom-color:var(--color-fox)}.spell-slots.is-correct .spell-slot{border-bottom-color:var(--color-leaf);color:var(--color-leaf-strong);animation:spell-pop var(--duration-normal) var(--ease-spring)}.spell-slots.is-shaking{animation:spell-shake var(--duration-normal) var(--ease-out-expo)}.spell-slots.is-shaking .spell-slot{border-bottom-color:var(--color-berry);color:var(--color-berry-strong)}.spell-tiles{justify-content:center;gap:var(--space-2xs);flex-wrap:wrap;display:flex}.spell-tile{border-radius:var(--radius-sm);background:var(--color-sky-tint);width:2.6rem;height:2.6rem;color:var(--color-sky-strong);font-size:var(--text-lg);text-transform:lowercase;cursor:pointer;box-shadow:var(--shadow-sm);transition:transform var(--duration-fast) var(--ease-spring), opacity var(--duration-fast) var(--ease-out-expo);border:none;font-weight:800}.spell-tile:hover:not(:disabled){transform:translateY(-2px)scale(1.06)}.spell-tile:disabled{opacity:.15;cursor:default;transform:scale(.9)}.spell-actions{justify-content:space-between;align-items:center;display:flex}.spell-tries{letter-spacing:.1em}.spell-reveal{align-items:center;gap:var(--space-2xs);text-align:center;flex-direction:column;display:flex}.spell-reveal-label{color:var(--color-ink-faint);font-size:var(--text-sm);font-weight:600}.spell-reveal-word{font-size:var(--text-2xl);color:var(--color-fox-strong);font-weight:800}@keyframes spell-shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}@keyframes spell-pop{0%{transform:scale(1)}50%{transform:scale(1.18)}to{transform:scale(1)}}.top-bar{justify-content:space-between;align-items:center;gap:var(--space-sm);display:flex}.top-bar-title{font-size:var(--text-xl);align-items:center;gap:var(--space-2xs);display:flex}.top-bar-emoji{font-size:1.1em}.top-bar-back{font-size:var(--text-sm);color:var(--color-ink-soft);border-radius:var(--radius-pill);background:var(--color-surface);box-shadow:var(--shadow-sm);flex-shrink:0;padding:.5em 1em;font-weight:700}.top-bar-back:hover{color:var(--color-fox-strong);text-decoration:none}.boss-tip{color:var(--color-ink-soft);font-size:var(--text-sm);text-align:center;font-weight:600}.boss-result,.boss-done{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.boss-result-emoji,.boss-done-emoji{font-size:3rem}.boss-result-title{font-size:var(--text-2xl)}.boss-result-text{color:var(--color-ink-soft)}.boss-result-text strong{color:var(--color-fox-strong)}.boss-section-title{font-size:var(--text-lg);margin-bottom:var(--space-sm)}.boss-board{gap:var(--space-2xs);flex-direction:column;list-style:none;display:flex}.boss-board-row{align-items:center;gap:var(--space-xs);padding:var(--space-2xs) var(--space-xs);border-radius:var(--radius-md);background:var(--color-surface-sunken);font-size:var(--text-sm);display:flex}.boss-board-row:first-child{background:var(--color-fox-tint)}.boss-board-rank{text-align:center;width:1.8em;font-weight:800}.boss-board-name{flex:1;font-weight:700}.boss-board-score{color:var(--color-ink-soft);font-weight:600}.boss-board-empty{color:var(--color-ink-faint);font-size:var(--text-sm);text-align:center}.flashcard{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-lg) var(--space-md);flex-direction:column;display:flex}.flashcard-visual{border-radius:var(--radius-md);background:var(--color-surface-sunken);justify-content:center;align-items:center;width:100%;min-height:160px;display:flex}.flashcard-visual img{border-radius:var(--radius-sm);object-fit:contain;max-width:100%;max-height:180px}.flashcard-emoji{font-size:4rem;line-height:1}.flashcard-gallery{gap:var(--space-2xs);flex-wrap:wrap;justify-content:center;display:flex}.flashcard-thumb{cursor:pointer;border-radius:var(--radius-sm);opacity:.5;transition:opacity var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo);background:0 0;border:none;padding:0;overflow:hidden}.flashcard-thumb img{object-fit:cover;width:44px;height:44px;display:block}.flashcard-thumb.is-active{opacity:1;box-shadow:0 0 0 2.5px var(--color-fox)}.flashcard-word{font-size:var(--text-2xl);color:var(--color-ink)}.flashcard-phonetic{font-size:var(--text-base);color:var(--color-ink-soft);letter-spacing:.02em}.flashcard-answer{gap:var(--space-xs);width:100%;animation:flashcard-reveal var(--duration-normal) var(--ease-out-expo);flex-direction:column;display:flex}.flashcard-meaning{font-size:var(--text-lg);color:var(--color-fox-strong);font-weight:700}.flashcard-note{font-size:var(--text-sm);color:var(--color-ink-soft)}.flashcard-actions{gap:var(--space-xs);margin-top:var(--space-2xs);display:flex}.flashcard-actions .btn{flex:1}@keyframes flashcard-reveal{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.flashcard-answer{animation:none}}.reward-tier-list{gap:var(--space-2xs);flex-direction:column;list-style:none;display:flex}.reward-tier{align-items:center;gap:var(--space-xs);padding:var(--space-2xs) var(--space-xs);border-radius:var(--radius-md);background:var(--color-surface-sunken);display:flex}.reward-tier.is-locked{opacity:.55}.reward-tier-badge{flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:1.25rem;display:flex}.reward-tier-badge img{object-fit:contain;width:100%;height:100%}.reward-tier-name{font-weight:700;font-size:var(--text-sm);flex:1}.reward-tier-status{font-size:var(--text-xs);color:var(--color-ink-soft);flex-shrink:0;font-weight:600}.reward-tier.is-unlocked .reward-tier-status{color:var(--color-leaf-strong)}.reward-tier-status.is-pending{color:var(--color-ink-soft)}.reward-tier-status.is-granted{color:var(--color-leaf-strong)}.reward-tier-claim{flex-shrink:0}.challenge-play-empty{text-align:center;color:var(--color-ink-soft)}.challenge-result{text-align:center;gap:var(--space-2xs);flex-direction:column;display:flex}.challenge-result-title{font-size:var(--text-2xl)}.challenge-result-score{color:var(--color-ink-soft)}.challenge-result-score strong{color:var(--color-fox-strong);font-size:var(--text-lg)}.challenge-section-title{font-size:var(--text-base);margin-bottom:var(--space-xs)}.challenge-leaderboard{gap:var(--space-3xs);flex-direction:column;list-style:none;display:flex}.challenge-leaderboard-row{align-items:center;gap:var(--space-xs);padding:var(--space-3xs) var(--space-2xs);font-size:var(--text-sm);display:flex}.challenge-leaderboard-rank{width:1.5em;color:var(--color-ink-faint);text-align:center;font-weight:800}.challenge-leaderboard-name{flex:1;font-weight:700}.challenge-leaderboard-score{color:var(--color-ink-soft)}.challenges-empty{text-align:center;color:var(--color-ink-soft)}.challenges-list{gap:var(--space-xs);flex-direction:column;list-style:none;display:flex}.challenge-card{gap:var(--space-3xs) var(--space-sm);color:inherit;transition:transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo);grid-template-columns:1fr auto;display:grid}.challenge-card:hover{box-shadow:var(--shadow-lg);text-decoration:none;transform:translateY(-2px)}.challenge-card-name{font-weight:800;font-size:var(--text-lg);color:var(--color-ink)}.challenge-card-count{font-size:var(--text-xs);color:var(--color-fox-strong);background:var(--color-fox-tint);border-radius:var(--radius-pill);white-space:nowrap;align-self:center;padding:.3em .7em;font-weight:700}.challenge-card-desc{color:var(--color-ink-soft);font-size:var(--text-sm);grid-column:1/-1}.arcade-tip{color:var(--color-ink-soft);font-size:var(--text-sm);text-align:center;font-weight:600}.arcade-list{gap:var(--space-sm);flex-direction:column;display:flex}.arcade-card{align-items:center;gap:var(--space-sm);color:inherit;border-left:6px solid var(--color-fox);transition:transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo);display:flex}.arcade-card:hover{box-shadow:var(--shadow-lg);text-decoration:none;transform:translateY(-2px)scale(1.01)}.arcade-card-match{border-left-color:var(--color-sky)}.arcade-card-quiz{border-left-color:var(--color-gold)}.arcade-card-spell{border-left-color:var(--color-leaf)}.arcade-card-listen{border-left-color:var(--color-fox)}.arcade-card-memory{border-left-color:var(--color-grape,var(--color-sky-strong))}.arcade-card-judge{border-left-color:var(--color-ink-soft)}.arcade-card-mole{border-left-color:var(--color-leaf-strong,var(--color-leaf))}.arcade-card-boss{border-left-color:var(--color-berry);background:linear-gradient(135deg, var(--color-surface) 60%, var(--color-fox-tint))}.arcade-card-emoji{font-size:2.4rem}.arcade-card-body{gap:var(--space-3xs);flex-direction:column;flex:1;display:flex}.arcade-card-name{font-size:var(--text-lg);font-weight:800}.arcade-card-desc{color:var(--color-ink-soft);font-size:var(--text-sm)}.arcade-card-go{font-size:var(--text-xl);color:var(--color-ink-faint)}.judge-status{min-height:1.4em;font-weight:700;font-size:var(--text-sm);justify-content:flex-end;display:flex}.judge-streak{color:var(--color-fox-strong)}.judge-question{align-items:center;gap:var(--space-xs);text-align:center;padding:var(--space-lg) var(--space-md);flex-direction:column;display:flex}.judge-hint{color:var(--color-ink-faint);font-size:var(--text-sm);font-weight:600}.judge-word{font-size:var(--text-hero);color:var(--color-ink);letter-spacing:.02em}.judge-meaning{font-size:var(--text-lg);color:var(--color-ink-soft);align-items:center;min-height:2.4em;font-weight:600;display:flex}.judge-actions{gap:var(--space-xs);width:100%;margin-top:var(--space-2xs);grid-template-columns:1fr 1fr;display:grid}.judge-btn{padding:var(--space-sm);border-radius:var(--radius-md);font-size:var(--text-lg);cursor:pointer;transition:transform var(--duration-fast) var(--ease-out-expo), filter var(--duration-fast) var(--ease-out-expo);border:2px solid #0000;font-weight:800}.judge-btn:hover{filter:brightness(1.03);transform:translateY(-2px)}.judge-btn-yes{background:var(--color-leaf-tint);color:var(--color-leaf-strong);border-color:var(--color-leaf)}.judge-btn-no{background:var(--color-berry-tint);color:var(--color-berry-strong);border-color:var(--color-berry)}.judge-feedback{align-items:center;gap:var(--space-3xs);flex-direction:column;justify-content:center;min-height:5.2em;display:flex}.judge-feedback-emoji{font-size:2rem}.judge-feedback.is-correct .judge-feedback-text{color:var(--color-leaf-strong)}.judge-feedback.is-wrong .judge-feedback-text{color:var(--color-berry-strong)}.judge-feedback-text{font-weight:700}.judge-empty,.judge-result{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.judge-result-stars{letter-spacing:.1em;font-size:2.6rem}.judge-result-title{font-size:var(--text-2xl)}.judge-result-text{color:var(--color-ink-soft)}.judge-result-text strong{color:var(--color-fox-strong)}.leaderboard-empty{text-align:center;color:var(--color-ink-soft)}.leaderboard-list{gap:var(--space-xs);flex-direction:column;list-style:none;display:flex}.leaderboard-row{align-items:center;gap:var(--space-sm);padding:var(--space-xs) var(--space-sm);display:flex}.leaderboard-row.is-podium{background:var(--color-fox-tint);box-shadow:var(--shadow-lg)}.leaderboard-rank{width:2em;font-size:var(--text-lg);text-align:center;color:var(--color-ink-faint);flex-shrink:0;font-weight:800}.is-podium .leaderboard-rank{font-size:var(--text-xl)}.leaderboard-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-weight:700;overflow:hidden}.leaderboard-stats{font-size:var(--text-xs);flex-direction:column;flex-shrink:0;align-items:flex-end;display:flex}.leaderboard-stat strong{color:var(--color-gold-strong);font-size:var(--text-sm)}.leaderboard-stat-muted{color:var(--color-ink-faint);font-weight:600}.listen-question{align-items:center;gap:var(--space-sm);text-align:center;flex-direction:column;display:flex}.listen-speaker{background:var(--color-sky-tint);cursor:pointer;width:5rem;height:5rem;box-shadow:var(--shadow-sm);transition:transform var(--duration-fast) var(--ease-spring);border:none;border-radius:50%;font-size:2.2rem}.listen-speaker:hover{transform:scale(1.08)}.listen-speaker:active{transform:scale(.95)}.listen-hint{color:var(--color-ink-faint);font-size:var(--text-sm);font-weight:600}.listen-options{gap:var(--space-2xs);grid-template-columns:1fr 1fr;width:100%;display:grid}.listen-option{border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);font-weight:700;font-size:var(--text-base);cursor:pointer;word-break:break-word;transition:transform var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo);padding:.8em .6em}.listen-option:hover:not(:disabled){border-color:var(--color-sky);transform:translateY(-1px)}.listen-option:disabled{cursor:default}.listen-option.is-correct{border-color:var(--color-leaf);background:var(--color-leaf-tint);color:var(--color-leaf-strong)}.listen-option.is-wrong{border-color:var(--color-berry);background:var(--color-berry-tint);color:var(--color-berry-strong)}.listen-option.is-muted{opacity:.5}.listen-meaning{font-size:var(--text-sm);color:var(--color-ink-soft);font-weight:700}.listen-status{text-align:center;min-height:1.4em;font-weight:700;font-size:var(--text-sm)}.listen-streak{color:var(--color-fox-strong)}.listen-empty,.listen-result{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.listen-result-stars{letter-spacing:.1em;font-size:2.6rem}.listen-result-title{font-size:var(--text-2xl)}.listen-result-text{color:var(--color-ink-soft)}.listen-result-text strong{color:var(--color-fox-strong)}.match-status{font-weight:700;font-size:var(--text-sm);color:var(--color-ink-soft);padding-inline:var(--space-3xs);justify-content:space-between;display:flex}.match-grid{gap:var(--space-2xs);grid-template-columns:repeat(3,1fr);display:grid}.match-card{border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);min-height:4.6rem;box-shadow:var(--shadow-sm);padding:var(--space-2xs);font-weight:700;font-size:var(--text-sm);cursor:pointer;text-align:center;word-break:break-word;transition:transform var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo), opacity var(--duration-normal) var(--ease-out-expo);justify-content:center;align-items:center;line-height:1.25;display:flex;overflow:hidden}.match-card-word{font-size:var(--text-base);letter-spacing:.01em}.match-card-label{-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.match-card:hover:not(:disabled){border-color:var(--color-sky);transform:translateY(-2px)}.match-card.is-selected{border-color:var(--color-sky-strong);background:var(--color-sky-tint);transform:scale(1.04)}.match-card.is-wrong{border-color:var(--color-berry);background:var(--color-berry-tint);animation:match-shake var(--duration-normal) var(--ease-out-expo)}.match-card.is-matched{border-color:var(--color-leaf);background:var(--color-leaf-tint);color:var(--color-leaf-strong);opacity:.45;cursor:default;transform:scale(.96)}.match-empty,.match-result{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.match-result-stars{letter-spacing:.1em;font-size:2.6rem}.match-result-title{font-size:var(--text-2xl)}.match-result-text{color:var(--color-ink-soft)}.match-result-text strong{color:var(--color-fox-strong)}@keyframes match-shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.memory-status{font-weight:700;font-size:var(--text-sm);color:var(--color-ink-soft);padding-inline:var(--space-3xs);justify-content:space-between;display:flex}.memory-grid{gap:var(--space-2xs);grid-template-columns:repeat(3,1fr);display:grid}.memory-card{border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-sky-tint);min-height:4.6rem;box-shadow:var(--shadow-sm);padding:var(--space-2xs);font-weight:700;font-size:var(--text-sm);cursor:pointer;text-align:center;word-break:break-word;transition:transform var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo), opacity var(--duration-normal) var(--ease-out-expo);justify-content:center;align-items:center;line-height:1.25;display:flex;overflow:hidden}.memory-card:hover:not(:disabled){border-color:var(--color-sky);transform:translateY(-2px)}.memory-card.is-flipped{background:var(--color-surface);border-color:var(--color-sky-strong)}.memory-card.is-matched{background:var(--color-leaf-tint);border-color:var(--color-leaf);color:var(--color-leaf-strong);opacity:.5;cursor:default;transform:scale(.96)}.memory-card-face{-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.memory-empty,.memory-result{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.memory-result-stars{letter-spacing:.1em;font-size:2.6rem}.memory-result-title{font-size:var(--text-2xl)}.memory-result-text{color:var(--color-ink-soft)}.memory-result-text strong{color:var(--color-fox-strong)}.mole-status{min-height:1.4em;font-weight:700;font-size:var(--text-sm);justify-content:flex-end;display:flex}.mole-streak{color:var(--color-fox-strong)}.mole-target{align-items:center;gap:var(--space-3xs);text-align:center;padding:var(--space-md);flex-direction:column;display:flex}.mole-hint{color:var(--color-ink-faint);font-size:var(--text-sm);font-weight:600}.mole-word{font-size:var(--text-hero);color:var(--color-ink);letter-spacing:.02em}.mole-timer{border-radius:var(--radius-pill,999px);background:var(--color-border);height:.4rem;overflow:hidden}.mole-timer-fill{background:var(--color-fox);transform-origin:0;width:100%;height:100%;animation-name:mole-timer-shrink;animation-timing-function:linear;animation-fill-mode:forwards}.mole-timer.is-paused .mole-timer-fill{animation-play-state:paused}@keyframes mole-timer-shrink{0%{transform:scaleX(1)}to{transform:scaleX(0)}}.mole-field{gap:var(--space-sm);grid-template-columns:repeat(2,1fr);display:grid}.mole-hole{cursor:pointer;background:0 0;border:none;min-height:6rem;padding:0;position:relative}.mole-hole-mound{background:var(--color-fox-tint);border:2px solid var(--color-fox);border-radius:50%/60%;height:1.2rem;position:absolute;inset:auto 8% 0}.mole-critter{justify-content:flex-end;align-items:center;gap:var(--space-3xs);border-radius:var(--radius-md);background:var(--color-surface);border:2px solid var(--color-sky-strong);box-shadow:var(--shadow-sm);animation:mole-pop-up var(--duration-normal,.25s) var(--ease-out-expo,ease-out);transition:transform var(--duration-fast) var(--ease-out-expo), border-color var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-out-expo);flex-direction:column;padding-bottom:.6rem;display:flex;position:absolute;inset:0}@keyframes mole-pop-up{0%{opacity:0;transform:translateY(30%)}to{opacity:1;transform:translateY(0)}}.mole-hole:hover:not(:disabled) .mole-critter{border-color:var(--color-sky);transform:translateY(-2px)}.mole-critter-face{font-size:1.6rem;line-height:1}.mole-critter-text{font-size:var(--text-sm);text-align:center;padding-inline:var(--space-3xs);-webkit-line-clamp:2;word-break:break-word;-webkit-box-orient:vertical;font-weight:700;display:-webkit-box;overflow:hidden}.mole-hole.is-correct .mole-critter{background:var(--color-leaf-tint);border-color:var(--color-leaf);color:var(--color-leaf-strong)}.mole-hole.is-wrong .mole-critter{background:var(--color-berry-tint);border-color:var(--color-berry);color:var(--color-berry-strong)}.mole-hole:disabled{cursor:default}.mole-empty,.mole-result{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.mole-result-stars{letter-spacing:.1em;font-size:2.6rem}.mole-result-title{font-size:var(--text-2xl)}.mole-result-text{color:var(--color-ink-soft)}.mole-result-text strong{color:var(--color-fox-strong)}.quiz-status{justify-content:space-between;align-items:center;gap:var(--space-2xs);font-weight:700;font-size:var(--text-sm);color:var(--color-ink-soft);padding-inline:var(--space-3xs);display:flex}.quiz-streak{color:var(--color-fox-strong);animation:quiz-bounce var(--duration-normal) var(--ease-spring)}.quiz-timer.is-urgent{color:var(--color-berry-strong);animation:1s infinite quiz-pulse}.quiz-empty,.quiz-result{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.quiz-result-title{font-size:var(--text-2xl)}.quiz-result-score{font-size:var(--text-hero);color:var(--color-fox-strong);font-weight:800;line-height:1}.quiz-result-text{color:var(--color-ink-soft)}.quiz-result-text strong{color:var(--color-fox-strong)}@keyframes quiz-bounce{0%{transform:scale(.8)}60%{transform:scale(1.15)}to{transform:scale(1)}}@keyframes quiz-pulse{0%,to{opacity:1}50%{opacity:.5}}.spell-empty,.spell-result{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.spell-result-stars{letter-spacing:.1em;font-size:2.6rem}.spell-result-title{font-size:var(--text-2xl)}.spell-result-text{color:var(--color-ink-soft)}.spell-result-text strong{color:var(--color-fox-strong)}.admin-login-page{justify-content:center;align-items:center;max-width:420px;min-height:100vh}.admin-login-card{gap:var(--space-md);flex-direction:column;width:100%;display:flex}.admin-login-brand{align-items:center;gap:var(--space-3xs);text-align:center;flex-direction:column;display:flex}.admin-login-mark{border-radius:var(--radius-md);background:var(--color-sky-strong);color:#fff;justify-content:center;align-items:center;width:3rem;height:3rem;font-size:1.5rem;display:inline-flex}.admin-login-title{font-size:var(--text-xl);color:var(--color-ink)}.admin-login-subtitle{color:var(--color-ink-faint);font-size:var(--text-sm)}.admin-login-form{gap:var(--space-sm);flex-direction:column;display:flex}.field-group{gap:var(--space-3xs);flex-direction:column;display:flex}.field-label{font-size:var(--text-xs);color:var(--color-ink-soft);font-weight:700}.field-error{font-size:var(--text-xs);color:var(--color-berry-strong);font-weight:600}.home-hero{gap:var(--space-3xs);flex-direction:column;display:flex}.home-hero-row{justify-content:space-between;align-items:center;gap:var(--space-xs);display:flex}.home-switch-user{color:var(--color-ink-faint);flex-shrink:0}.home-greeting{font-size:var(--text-hero);color:var(--color-ink)}.home-title-badge{align-self:flex-start;align-items:center;gap:var(--space-3xs);font-weight:700;font-size:var(--text-sm);color:var(--color-fox-strong);background:var(--color-fox-tint);padding:var(--space-3xs) var(--space-xs);border-radius:var(--radius-pill);display:inline-flex}.home-stats{align-items:center;gap:var(--space-md);flex-wrap:wrap;display:flex}.stat-pill{align-items:baseline;gap:var(--space-3xs);display:flex}.stat-pill-icon{font-size:var(--text-lg)}.stat-pill-value{font-size:var(--text-xl);color:var(--color-ink);font-weight:800}.stat-pill-label{font-size:var(--text-xs);color:var(--color-ink-faint);font-weight:600}.home-stats-divider{background:var(--color-border);height:1px;margin:var(--space-3xs) 0;flex-basis:100%}.home-progress-row{gap:var(--space-md);font-size:var(--text-sm);color:var(--color-ink-soft);flex-wrap:wrap;flex-basis:100%;display:flex}.home-progress-row strong{color:var(--color-ink)}.home-cta{font-size:var(--text-lg);padding:1em 1.6em}.home-links{gap:var(--space-xs);display:flex}.home-link-pill{text-align:center;font-weight:700;font-size:var(--text-sm);border-radius:var(--radius-pill);background:var(--color-surface);box-shadow:var(--shadow-sm);color:var(--color-ink-soft);flex:1;padding:.75em 1em}.home-link-pill:hover{color:var(--color-fox-strong);box-shadow:var(--shadow-md);text-decoration:none}.home-section{gap:var(--space-xs);flex-direction:column;display:flex}.home-section-title{font-size:var(--text-base);color:var(--color-ink)}.login-page{justify-content:center;min-height:100vh}.login-hero{text-align:center;align-items:center;gap:var(--space-2xs);flex-direction:column;display:flex}.login-mascot{filter:drop-shadow(0 8px 16px oklch(60% .1 55/.35));animation:login-mascot-bob 2.6s var(--ease-out-expo) infinite;font-size:3.5rem;line-height:1}.login-title{font-size:var(--text-hero);color:var(--color-ink)}.login-subtitle{color:var(--color-ink-soft);font-size:var(--text-lg);font-weight:600}.login-form{gap:var(--space-sm);flex-direction:column;display:flex}@keyframes login-mascot-bob{0%,to{transform:translateY(0)rotate(-2deg)}50%{transform:translateY(-8px)rotate(2deg)}}@media (prefers-reduced-motion:reduce){.login-mascot{animation:none}}.study-page{justify-content:center}.study-empty,.study-summary{align-items:center;gap:var(--space-sm);text-align:center;padding:var(--space-xl) var(--space-md);flex-direction:column;display:flex}.study-empty-emoji{font-size:3rem}.study-summary-title{font-size:var(--text-2xl)}.study-summary-text{color:var(--color-ink-soft)}.study-summary-text strong{color:var(--color-fox-strong)}.wrong-words-list{gap:var(--space-2xs);flex-direction:column;list-style:none;display:flex}.wrong-word-card{align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);display:flex}.wrong-word-main{text-align:left;cursor:pointer;font:inherit;color:inherit;background:0 0;border:none;flex-direction:column;flex:1;align-items:flex-start;gap:2px;padding:0;display:flex}.wrong-word-head{align-items:baseline;gap:var(--space-2xs);flex-wrap:wrap;display:flex}.wrong-word-text{font-weight:800;font-size:var(--text-md)}.wrong-word-phonetic{color:var(--color-ink-soft);font-size:var(--text-sm)}.wrong-word-meaning{font-size:var(--text-sm);color:var(--color-ink)}.wrong-word-meaning.is-hidden{color:var(--color-ink-soft);font-style:italic}.wrong-word-badge{font-size:var(--text-xs);white-space:nowrap;flex-shrink:0;font-weight:700}.wrong-words-empty{text-align:center}