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svg{width:1.9rem;height:1.9rem;display:block}.life--lost{color:var(--color-ink-soft);opacity:.7;transform:scale(.82)}.cloze-sentence{font-size:var(--text-lg);overflow-wrap:break-word;line-height:2.3}.blank-word{white-space:nowrap}.word-gap{width:.7em;display:inline-block}.cloze-hint{color:var(--color-ink-soft);font-size:1rem;font-style:italic}.front-image{border-radius:var(--radius-card);width:auto;max-width:min(100%,22rem);height:auto;max-height:46vh;box-shadow:0 8px 24px #2d374826}.cloze-hint-label{color:var(--on-fill);background:var(--color-yellow);border:2px solid var(--color-ink);border-radius:var(--radius-pill);margin-right:.35rem;padding:.05rem .6rem;font-style:normal;font-weight:700}.slot{border:2px solid var(--color-ink);background:var(--color-surface);vertical-align:middle;border-radius:8px;place-items:center;width:1.3em;height:1.7em;margin-inline:2px;font-weight:700;line-height:1;display:inline-grid}.slot--empty{background:var(--slot-empty);box-shadow:inset 2px 2px #0000000f}.slot--next{background:var(--color-yellow);box-shadow:2px 2px 0 0 var(--color-ink)}.slot--filled{color:var(--on-fill);background:var(--color-mint);box-shadow:2px 2px 0 0 var(--color-ink);animation:slot-pop var(--duration-normal) var(--ease-pop)}.slot--hint{color:var(--on-fill);background:var(--color-yellow)}.slot--literal{width:auto;min-width:.4em;box-shadow:none;background:0 0;border:none}@keyframes slot-pop{0%{opacity:0;transform:scale(.5)translateY(-4px)}to{opacity:1;transform:scale(1)translateY(0)}}.cloze-sentence--flash{animation:wrong-shake var(--duration-normal) ease}@keyframes wrong-shake{0%,to{transform:translate(0)}25%{transform:translate(-7px)}75%{transform:translate(7px)}}.ghost-input{opacity:.01;border:none;width:1px;height:1px;position:absolute}.card-actions{gap:var(--space-2);flex-wrap:wrap;justify-content:center;display:flex}.card-actions button:first-child{background:var(--color-yellow)}.hint-button{align-items:center;gap:.15rem;display:inline-flex}.inline-heart{color:var(--color-danger);place-items:center;display:inline-grid}.inline-heart svg{width:1.05rem;height:1.05rem;display:block}.card-actions button:last-child{background:var(--color-surface);color:var(--color-ink-soft)}.tap-hint{color:var(--color-ink-soft);font-size:.95rem}.outcome-good{color:var(--on-fill);background:var(--color-mint);border-radius:var(--radius-pill);font-family:var(--font-display), var(--font-zh);font-weight:700;font-size:var(--text-lg);padding:.3rem 1.2rem}.outcome-again{color:var(--on-fill);background:var(--color-peach);border-radius:var(--radius-pill);font-family:var(--font-display), var(--font-zh);font-weight:700;font-size:var(--text-lg);padding:.3rem 1.2rem}.back-word{font-family:var(--font-display), var(--font-zh);font-size:var(--text-word);align-items:center;gap:var(--space-2);font-weight:700;display:flex}.back-pos{background:var(--color-lilac);color:var(--on-fill);border:2px solid var(--color-ink);border-radius:var(--radius-pill);align-self:center;padding:.15rem 1rem;font-size:.9rem;font-weight:700}.back-definition{color:var(--color-ink);background:var(--color-paper);border:var(--border-ink);border-radius:var(--radius-btn);padding:var(--space-3)}.back-example-row{align-items:center;gap:var(--space-2);display:flex}.back-example mark{background:var(--color-yellow);border-radius:4px;padding-inline:.2em;font-weight:700}.audio-button{background:var(--color-blue);color:var(--on-fill);border-radius:var(--radius-pill);place-items:center;padding:.4rem .6rem;display:inline-grid}.audio-button svg{width:1.35rem;height:1.35rem;display:block}.back-image{border-radius:var(--radius-card);width:auto;max-width:min(100%,22rem);height:auto;max-height:46vh;box-shadow:0 8px 24px #2d374826}.back-image--placeholder{aspect-ratio:1;background:var(--color-paper);width:min(100%,16rem);max-height:46vh;color:var(--color-ink-soft);place-items:center;display:grid}.back-image--placeholder svg{width:4rem;height:4rem}.study-session{gap:var(--space-3);display:grid}.session-meta{justify-content:space-between;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--color-surface);border:var(--border-ink);border-radius:var(--radius-card);box-shadow:var(--shadow-card);flex-wrap:wrap;display:flex}.session-meta h1{font-size:var(--text-lg);color:var(--color-ink)}.session-title-row{justify-content:space-between;align-items:center;gap:var(--space-2);width:100%;display:flex}.session-actions{align-items:center;gap:var(--space-2);flex-shrink:0;display:flex}.end-session{min-height:var(--tap-target);border:var(--border-ink);border-radius:var(--radius-btn);background:var(--color-surface);box-shadow:var(--shadow-btn);color:var(--color-ink);transition:transform var(--duration-fast) ease, box-shadow var(--duration-fast) ease;flex-shrink:0;align-items:center;padding:.4rem 1.2rem;font-weight:700;text-decoration:none;display:inline-flex}.end-session:hover{box-shadow:var(--shadow-btn-lg);text-decoration:none;transform:translate(-1px,-1px)}.end-session:active{box-shadow:0 0 0 0 var(--color-ink);transform:translate(4px,4px)}.submit-error{background:var(--color-danger-bg);border:var(--border-ink);border-radius:var(--radius-btn);box-shadow:var(--shadow-btn);padding:var(--space-2) var(--space-3);justify-content:space-between;align-items:center;gap:var(--space-2);display:flex}.session-done{text-align:center;gap:var(--space-3);padding-block:var(--space-5);font-family:var(--font-display), var(--font-zh);font-size:var(--text-lg);justify-items:center;display:grid}.session-done-badge{background:var(--color-yellow);width:4rem;height:4rem;color:var(--on-fill);border-radius:50%;place-items:center;display:inline-grid}.session-done-badge svg{width:2rem;height:2rem}.session-done-hint{font-family:var(--font-body), var(--font-zh);font-size:var(--text-base);color:var(--color-ink-soft);max-width:26rem}.session-done a{min-height:var(--tap-target);background:var(--color-mint);color:var(--on-fill);border:var(--border-ink);border-radius:var(--radius-btn);box-shadow:var(--shadow-btn);align-items:center;padding:.5rem 1.5rem;display:inline-flex}.progress-today dl{gap:var(--space-2);text-align:center;grid-template-columns:repeat(3,1fr);display:grid}.progress-today dl>div{background:var(--color-surface);border:var(--border-ink);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:var(--space-3) var(--space-2)}.progress-today dt{color:var(--color-ink-soft);font-size:.9rem;font-weight:700}.progress-today dd{font-family:var(--font-display), var(--font-zh);font-size:var(--text-xl);color:var(--color-ink);font-weight:700}.progress-decks{gap:var(--space-2);margin-top:var(--space-3);list-style:none;display:grid}.progress-decks li{background:var(--color-surface);border:var(--border-ink);border-radius:var(--radius-card);padding:var(--space-3);box-shadow:var(--shadow-card)}.deck-stats h3{justify-content:space-between;align-items:baseline;gap:var(--space-2);margin-bottom:var(--space-2);display:flex}.deck-stats-total{font-family:var(--font-body), var(--font-zh);color:var(--color-ink-soft);font-size:.95rem;font-weight:700}.deck-stats table{border-collapse:collapse;width:100%;font-size:.95rem}.deck-stats th,.deck-stats td{text-align:left;border-bottom:2px solid var(--color-line);padding:.35rem .5rem}.deck-stats thead th{color:var(--color-ink-soft);font-size:.85rem}.deck-stats tbody tr:last-child th,.deck-stats tbody tr:last-child td{border-bottom:none}.deck-stats td{font-variant-numeric:tabular-nums}.deck-stats tbody th{font-weight:700}.stat-en{color:var(--color-ink-soft);font-size:.85em;font-weight:400}.deck-stats tbody th:before{content:"";border:2px solid var(--color-ink);vertical-align:baseline;border-radius:50%;width:.7em;height:.7em;margin-right:.45em;display:inline-block}.stat-new th:before{background:var(--color-blue)}.stat-learning th:before{background:var(--color-yellow)}.stat-relearning th:before{background:var(--color-peach)}.stat-young th:before{background:var(--color-mint)}.stat-mature th:before{background:var(--color-green)}.stat-archived th:before{background:var(--color-line)}progress{border:2px solid var(--color-ink);border-radius:var(--radius-pill);background:var(--color-surface);width:100%;height:1.1rem;accent-color:var(--color-mint);overflow:hidden}progress::-webkit-progress-bar{background:var(--color-surface);border-radius:var(--radius-pill)}progress::-webkit-progress-value{background:var(--color-mint);border-radius:var(--radius-pill)}.import-panel,.invite-result{gap:var(--space-2);background:var(--color-surface);border:var(--border-ink);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:var(--space-3);margin-block:var(--space-2) var(--space-4);display:grid}.import-rule{color:var(--on-fill);background:var(--color-yellow);border:2px solid var(--color-ink);border-radius:var(--radius-btn);padding:var(--space-2);flex-direction:column;align-items:flex-start;gap:.35rem;font-weight:700;display:flex}.import-rule-icon{place-items:center;display:inline-grid}.import-rule-icon svg{width:1.5rem;height:1.5rem}.invite-result output{overflow-wrap:anywhere;background:var(--color-paper);border:2px solid var(--color-ink);padding:var(--space-2);border-radius:10px;font-size:.9rem}section{margin-block:var(--space-4)}.danger-zone{border:var(--border-ink);border-radius:var(--radius-card);padding:var(--space-3);background:var(--color-danger-bg);box-shadow:var(--shadow-card)}.warning-zone{border:var(--border-ink);border-radius:var(--radius-card);padding:var(--space-3);background:color-mix(in srgb, var(--color-peach) 18%, var(--color-surface));box-shadow:var(--shadow-card)}.warning-zone>p{margin-bottom:var(--space-3)}.warning-zone .confirm-row{background:color-mix(in srgb, var(--color-peach) 28%, var(--color-surface))}.danger-button{background:var(--color-danger);color:var(--on-danger)}.warning-button{background:var(--color-peach);color:var(--on-fill)}.warning-button:hover:not(:disabled){background:var(--color-peach-deep)}.confirm-row{gap:var(--space-2);margin-top:var(--space-2);padding:var(--space-3);background:var(--color-danger-bg);border:2px solid var(--color-ink);border-radius:var(--radius-btn);display:grid}.confirm-row button{justify-self:start}.deck-manager{gap:var(--space-3);list-style:none;display:grid}.deck-manager-row{gap:var(--space-2);background:var(--color-surface);border:var(--border-ink);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:var(--space-3);display:grid}.rename-controls{gap:var(--space-2);align-items:flex-start;display:flex}.rename-controls input{flex:1}.import-panel input[type=text],.rename-controls input[type=text]{padding:.9rem 1.2rem;font-size:1.15rem}.rename-controls button{flex-shrink:0}.theme-toggle{width:var(--tap-target);height:var(--tap-target);background:var(--color-surface);min-width:0;color:var(--color-ink);border:var(--border-ink);border-radius:var(--radius-btn);box-shadow:var(--shadow-btn);place-items:center;padding:0;display:inline-grid}.theme-toggle svg{width:1.35rem;height:1.35rem;display:block}.theme-toggle--floating{top:var(--space-3);right:var(--space-3);position:absolute}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media (max-width:360px){main,.card{padding-inline:var(--space-2)}}