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.16s;display:grid;position:absolute;top:50%;transform:translateY(-50%)}.card-nav-arrow{background:linear-gradient(155deg, var(--word-card-page-accent) 0%, var(--word-card-page-accent) 48%, var(--word-card-page-accent-strong) 100%);width:21px;height:34px;display:block}@supports (color:color-mix(in lab, red, red)){.card-nav-arrow{background:linear-gradient(155deg, color-mix(in srgb, var(--word-card-page-accent) 62%, #fff 38%) 0%, var(--word-card-page-accent) 48%, color-mix(in srgb, var(--word-card-page-accent-strong) 58%, #111827 42%) 100%)}}.card-nav-arrow{clip-path:polygon(0 0,100% 50%,0 100%,24% 50%);filter:drop-shadow(0 6px 7px var(--word-card-page-accent-strong))}@supports (color:color-mix(in lab, red, red)){.card-nav-arrow{filter:drop-shadow(0 6px 7px color-mix(in srgb, var(--word-card-page-accent-strong) 28%, transparent))}}.card-nav-arrow{transition:transform .16s,filter .16s}.card-nav-button:hover:not(:disabled){filter:brightness(1.12);transform:translateY(-50%)scale(1.08)}.card-nav-button:hover:not(:disabled) .card-nav-arrow{filter:drop-shadow(0 8px 9px var(--word-card-page-accent-strong))}@supports (color:color-mix(in lab, red, red)){.card-nav-button:hover:not(:disabled) .card-nav-arrow{filter:drop-shadow(0 8px 9px color-mix(in srgb, var(--word-card-page-accent-strong) 40%, transparent))}}.card-nav-button:disabled{cursor:not-allowed;opacity:.35}.card-nav-button-left{left:0}.card-nav-button-left .card-nav-arrow{transform:rotate(180deg)}.card-nav-button-right{right:0}.flip-card{perspective:1600px;background:0 0;border:0;width:100%;height:clamp(320px,100vh - 360px,430px);min-height:320px;margin:0 auto;padding:0;display:block}.flip-card-inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .68s cubic-bezier(.2,.8,.2,1);display:block;position:relative}.flip-card.is-flipped .flip-card-inner{transform:rotateY(180deg)}.flip-card-face{border:1px solid var(--card-border);border-radius:var(--button-radius);box-shadow:0 30px 90px var(--word-card-page-accent);align-content:center;place-items:center;gap:18px;padding:30px;display:grid;position:absolute;inset:0;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.flip-card-face{box-shadow:0 30px 90px color-mix(in srgb, var(--word-card-page-accent) 16%, transparent)}}.flip-card-face{backface-visibility:hidden}.flip-card-front{color:#fff;background:radial-gradient(circle at 12% 8%, var(--word-card-page-accent), transparent 21rem), radial-gradient(circle at 92% 90%, var(--word-card-page-accent-strong), transparent 24rem), linear-gradient(135deg, var(--word-card-page-accent) 0%, var(--word-card-page-accent-strong) 58%, var(--word-card-page-accent-strong) 100%)}@supports (color:color-mix(in lab, red, red)){.flip-card-front{background:radial-gradient(circle at 12% 8%, color-mix(in srgb, var(--word-card-page-accent) 72%, #fff 8%), transparent 21rem), radial-gradient(circle at 92% 90%, color-mix(in srgb, var(--word-card-page-accent-strong) 38%, transparent), transparent 24rem), linear-gradient(135deg, color-mix(in srgb, var(--word-card-page-accent) 92%, #fff 8%) 0%, var(--word-card-page-accent-strong) 58%, color-mix(in srgb, var(--word-card-page-accent-strong) 52%, #111827 48%) 100%)}}.flip-card-back{color:#fff;background:radial-gradient(circle at 88% 86%, var(--word-card-page-accent), transparent 22rem), radial-gradient(circle at 12% 12%, var(--word-card-page-accent-strong), transparent 18rem), linear-gradient(135deg, var(--word-card-page-accent-strong) 0%, var(--word-card-page-accent-strong) 58%, var(--word-card-page-accent-strong) 100%);flex-direction:column;justify-content:center;min-height:0;display:flex;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.flip-card-back{background:radial-gradient(circle at 88% 86%, color-mix(in srgb, var(--word-card-page-accent) 50%, transparent), transparent 22rem), radial-gradient(circle at 12% 12%, color-mix(in srgb, var(--word-card-page-accent-strong) 24%, transparent), transparent 18rem), linear-gradient(135deg, color-mix(in srgb, var(--word-card-page-accent-strong) 36%, #111827 64%) 0%, color-mix(in srgb, var(--word-card-page-accent-strong) 54%, #111827 46%) 58%, var(--word-card-page-accent-strong) 100%)}}.flip-card-back{transform:rotateY(180deg)}.flip-card-face small{color:var(--text-muted);letter-spacing:.16em;text-transform:uppercase;font-size:.9rem;font-weight:950}.flip-card-back small{color:#ffffffbd}.flip-card-front small{color:#ffffffc2}.flip-card-face strong{color:inherit;letter-spacing:-.045em;text-align:center;max-width:840px;font-size:clamp(2rem,6vw,4.2rem);font-weight:800;line-height:1.08}.flip-card-back strong{letter-spacing:-.025em;font-size:clamp(1.45rem,4vw,3rem);font-weight:720;line-height:1.25}.word-meaning-split{flex:0 0 170px;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;width:min(860px,100%);height:170px;min-height:0;display:grid}.word-meaning-panel{overscroll-behavior:contain;scrollbar-width:none;-ms-overflow-style:none;text-align:center;background:#ffffff14;border:1px solid #ffffff2e;border-radius:22px;grid-template-rows:auto 1fr;align-content:stretch;justify-items:center;gap:14px;height:170px;min-height:0;padding:clamp(16px,3vw,28px);display:grid;overflow:auto}.word-meaning-panel::-webkit-scrollbar{width:0;height:0;display:none}.word-meaning-refresh-button::-webkit-scrollbar{width:0;height:0;display:none}.word-card-example::-webkit-scrollbar{width:0;height:0;display:none}.word-meaning-panel:first-child{background:var(--word-card-page-accent)}@supports (color:color-mix(in lab, red, red)){.word-meaning-panel:first-child{background:color-mix(in srgb, var(--word-card-page-accent) 14%, transparent)}}.word-meaning-panel strong{align-self:center;max-width:100%;font-size:clamp(1.05rem,3.1vw,2.35rem);line-height:1.18}.word-meaning-missing-stack{align-content:center;justify-items:center;gap:8px;width:100%;height:100%;display:grid}.word-meaning-refresh-button{width:100%;height:170px;min-height:0;color:inherit;background:radial-gradient(circle at 50% 0%, var(--word-card-page-accent), transparent 70%), #ffffff14;border:1px solid #fff3;border-radius:22px;padding:clamp(16px,3vw,28px)}@supports (color:color-mix(in lab, red, red)){.word-meaning-refresh-button{background:radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--word-card-page-accent) 18%, transparent), transparent 70%), #ffffff14}}.word-meaning-refresh-button{overscroll-behavior:contain;scrollbar-width:none;-ms-overflow-style:none;cursor:pointer;text-align:center;font-size:clamp(1.05rem,3.1vw,2.15rem);font-weight:760;line-height:1.18;transition:opacity .16s,transform .16s;overflow:auto;box-shadow:inset 0 2px 7px #ffffff14,inset 0 -16px 30px #02061738}.word-meaning-refresh-button span:first-child{min-width:0}.word-meaning-refresh-button:not(:disabled):hover{border-color:var(--word-card-page-accent)}@supports (color:color-mix(in lab, red, red)){.word-meaning-refresh-button:not(:disabled):hover{border-color:color-mix(in srgb, var(--word-card-page-accent) 58%, #fff 18%)}}.word-meaning-refresh-button:not(:disabled):hover{background:radial-gradient(circle at 50% 0%, var(--word-card-page-accent), transparent 70%), #ffffff1a}@supports (color:color-mix(in lab, red, red)){.word-meaning-refresh-button:not(:disabled):hover{background:radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--word-card-page-accent) 26%, transparent), transparent 70%), #ffffff1a}}.word-meaning-refresh-button:not(:disabled):hover{opacity:.95;transform:translateY(-1px)}.word-meaning-refresh-button:disabled{cursor:wait;opacity:.72}.word-meaning-refresh-icon{color:var(--word-card-page-accent);flex:none;margin:2px auto 0;display:block}@supports (color:color-mix(in lab, red, red)){.word-meaning-refresh-icon{color:color-mix(in srgb, var(--word-card-page-accent) 46%, #fff 54%)}}.word-meaning-refresh-icon{text-shadow:0 1px 0 #ffffff2e, 0 -2px 4px #020617b3, 0 0 18px var(--word-card-page-accent);font-size:.72em;font-weight:900;line-height:1}@supports (color:color-mix(in lab, red, red)){.word-meaning-refresh-icon{text-shadow:0 1px 0 #ffffff2e, 0 -2px 4px #020617b3, 0 0 18px color-mix(in srgb, var(--word-card-page-accent) 34%, transparent)}}.word-meaning-missing-helper{color:#ffffffad;font-size:clamp(.78rem,1.8vw,.92rem);font-weight:650;line-height:1.25}.word-meaning-title{letter-spacing:.15em;color:#ffffffc7!important;font-size:clamp(.78rem,1.7vw,.95rem)!important}.word-card-example{overscroll-behavior:contain;scrollbar-width:none;-ms-overflow-style:none;text-align:center;background:#ffffff14;border:1px solid #ffffff29;border-radius:18px;flex:0 0 150px;justify-items:center;gap:8px;width:min(760px,100%);height:150px;min-height:0;max-height:150px;padding:14px 18px;display:grid;overflow:auto}.word-card-example small{letter-spacing:.13em;color:#ffffffad!important;font-size:.72rem!important}.word-card-example span{color:#ffffffc7;font-size:clamp(.84rem,1.8vw,1.02rem);font-weight:650;line-height:1.35}.word-card-example strong{letter-spacing:-.02em;max-width:100%;font-size:clamp(.98rem,2.4vw,1.42rem);font-weight:800;line-height:1.25}.word-card-example-front{max-width:720px;max-height:128px}.word-card-example-back{max-width:720px}.flip-card-face.sentence-flip-face strong{letter-spacing:-.012em;max-width:820px;font-size:clamp(1rem,2.25vw,1.75rem);font-weight:680;line-height:1.42}.flip-card-back.sentence-flip-face strong,.flip-card-back.grammar-card-face strong{font-size:clamp(.98rem,2vw,1.55rem);font-weight:620;line-height:1.55}.flip-card-face em{color:var(--text-muted);font-style:normal;font-weight:650}.flip-card-front em{color:#ffffffd1}.flip-card-back em{color:#ffffffd6}.card-slider-actions{width:min(1040px,100%);margin:14px auto 0;padding:0 58px;display:block}.card-shortcuts-dialog{border:1px solid var(--card-border);width:min(440px,100% - 32px);color:var(--text);background:var(--card-bg);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:18px;padding:26px 24px 22px;box-shadow:0 24px 80px #0b112047}.card-shortcuts-dialog::backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0b112070}.card-shortcuts-dialog-header{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.card-shortcuts-dialog h2{margin:4px 0 0;font-size:clamp(1.35rem,4vw,1.8rem)}.card-shortcuts-close{border:1px solid var(--input-border);width:34px;height:34px;color:var(--text);background:var(--input-bg);border-radius:50%;font-size:1.35rem;line-height:1}.card-shortcuts-list{gap:8px;margin:24px 0 18px;display:grid}.card-shortcut-row{color:var(--text-soft);justify-content:space-between;align-items:center;gap:16px;font-weight:750;display:flex}.card-shortcut-row kbd{border:1px solid var(--input-border);min-width:34px;color:var(--text);background:var(--input-bg);text-align:center;box-shadow:0 2px 0 var(--input-border);border-radius:7px;padding:5px 9px;font-size:.78rem;font-weight:950}.card-shortcuts-touch-note{color:var(--text-muted);margin:0 0 16px;font-size:.84rem}.card-shortcuts-checkbox{color:var(--text-soft);cursor:pointer;align-items:center;gap:9px;margin-bottom:18px;font-size:.9rem;font-weight:700;display:flex}.card-shortcuts-checkbox input{accent-color:#2d7df0;width:17px;height:17px}.card-shortcuts-confirm{border-radius:var(--button-radius);color:#fff;background:linear-gradient(135deg,#2d7df0,#1261d8 52%,#111827);border:0;width:100%;min-height:46px;font-weight:850}.card-hints-fab{right:22px;bottom:calc(22px + env(safe-area-inset-bottom));z-index:40;border:1px solid var(--card-border);width:48px;height:48px;color:var(--text);background:var(--card-bg);border-radius:50%;place-items:center;font-size:1.25rem;font-weight:900;display:grid;position:fixed;box-shadow:0 12px 30px #0b11202e}.card-hints-fab:hover,.card-shortcuts-close:hover,.card-shortcuts-confirm:hover{transform:translateY(-1px)}@media (width<=560px){.card-shortcuts-dialog{width:100%;max-width:none;padding:22px 18px calc(18px + env(safe-area-inset-bottom));border-radius:18px 18px 0 0;margin:auto 0 0}.card-hints-fab{right:14px;bottom:calc(14px + env(safe-area-inset-bottom))}}.card-progress-track{border-radius:var(--button-radius);background:linear-gradient(90deg, var(--word-card-page-accent) 0%, var(--word-card-page-accent-strong) 58%, var(--word-card-page-accent-strong) 100%);height:30px;display:block;position:relative;overflow:hidden}@supports (color:color-mix(in lab, red, red)){.card-progress-track{background:linear-gradient(90deg, var(--word-card-page-accent) 0%, var(--word-card-page-accent-strong) 58%, color-mix(in srgb, var(--word-card-page-accent-strong) 52%, #111827 48%) 100%)}}.card-progress-track{box-shadow:0 12px 28px var(--word-card-page-accent-strong)}@supports (color:color-mix(in lab, red, red)){.card-progress-track{box-shadow:0 12px 28px color-mix(in srgb, var(--word-card-page-accent-strong) 16%, transparent)}}.card-progress-track span{border-radius:var(--button-radius);background:#ffffff2e;border-right:1px solid #ffffff94;height:100%;transition:width .24s;display:block;position:absolute;top:0;bottom:0;left:0}.card-progress-track strong{z-index:1;color:#fff;text-shadow:0 1px 8px #0000003d;place-items:center;font-size:.92rem;font-weight:950;display:grid;position:absolute;inset:0}.word-chip{border-radius:var(--button-radius);color:#fff;background:var(--unknown-action);border:0;padding:12px 18px;font-weight:800;transition:transform .16s,background .16s}.word-chip.is-listed{background:#9ca3af}.sentence-idiom-button{color:#fff;background:linear-gradient(135deg,#2d7df0 0%,#1261d8 54%,#111827 100%);border-color:#2d7df080;box-shadow:0 10px 24px #1261d833}.sentence-idiom-button:before{content:"◆";color:#ffffffbd;margin-right:.25em;font-size:.7em}.sentence-idiom-tooltip .sentence-inline-tooltip small{color:#ffffffad;letter-spacing:.12em;text-transform:uppercase;font-size:.72rem;font-weight:950}.idioms-page{padding:30px 34px 34px}.idioms-page .page-heading{margin-bottom:22px}.idioms-page .words-heading h1{font-size:clamp(1.65rem,3.2vw,2.6rem)}.idioms-page .words-heading .hero-description{font-size:.86rem;line-height:1.45}.idioms-page .play-cards-button.compact{padding:10px 16px;font-size:.88rem}.idioms-table-toolbar{justify-content:flex-start;margin-top:14px;display:flex}.idioms-search-input{border:1px solid var(--input-border);width:min(100%,280px);color:var(--text-primary);background:var(--input-bg);font:inherit;border-radius:10px;outline:none;padding:8px 11px;font-weight:700;transition:border-color .16s,box-shadow .16s}.idioms-search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent)}@supports (color:color-mix(in lab, red, red)){.idioms-search-input:focus{box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent)}}.idioms-table-shell{border:1px solid var(--input-border);background:var(--input-bg);border-radius:12px;margin-top:12px;overflow:hidden}.idioms-data-table{width:100%;color:var(--text-primary);font-size:.86rem}.idioms-table-row{border-bottom:1px solid var(--input-border)}.idioms-table-row:hover{background:var(--accent)}@supports (color:color-mix(in lab, red, red)){.idioms-table-row:hover{background:color-mix(in srgb, var(--accent) 7%, transparent)}}.idioms-table-head,.idioms-table-cell{vertical-align:middle;height:40px;padding:9px 14px}.idioms-table-head{color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;font-size:.7rem;font-weight:950}.idioms-word-cell{font-weight:900}.idioms-phrase-cell{gap:1px;display:grid}.idioms-phrase-cell strong{font-weight:900}.idioms-phrase-cell span{color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;font-size:.68rem;font-weight:900}.idioms-score-column{text-align:right;width:92px}.idioms-score-badge{border:1px solid var(--accent);justify-content:center;min-width:30px;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.idioms-score-badge{border:1px solid color-mix(in srgb, var(--accent) 34%, transparent)}}.idioms-score-badge{color:var(--accent);background:var(--accent);border-radius:999px;padding:3px 8px}@supports (color:color-mix(in lab, red, red)){.idioms-score-badge{background:color-mix(in srgb, var(--accent) 9%, transparent)}}.idioms-score-badge{font-weight:950}.idioms-table-empty{text-align:center;margin:0;padding:18px}.idiom-list-grid{margin-top:22px}.idiom-item-card{gap:8px}.idiom-item-card>span{color:var(--accent);letter-spacing:.14em;text-transform:uppercase;font-size:.72rem;font-weight:950}.idiom-item-card em{color:var(--text-muted);font-style:normal;font-weight:850}.idiom-card-face em{text-align:center;max-width:760px;line-height:1.55}.history-list{gap:10px;margin-top:18px;display:grid}.history-item{border:1px solid var(--history-border);width:100%;color:var(--text-primary);background:var(--input-bg);text-align:left;border-radius:16px;gap:6px;padding:14px;transition:transform .16s,border .16s;display:grid}.history-item.is-active{border-color:var(--accent)}.history-item span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.history-item small,.empty-state{color:var(--text-muted)}.empty-state{margin:24px 0 0}.empty-state.compact{margin-top:16px}.grammar-list{gap:14px;margin-top:32px;display:grid}.grammar-topic-list{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:34px;display:grid}.grammar-topic-card{border:1px solid var(--history-border);min-height:180px;color:var(--text-primary);background:var(--input-bg);text-align:left;border-radius:24px;align-content:start;gap:10px;padding:20px;transition:border .16s,box-shadow .16s,transform .16s;display:grid;overflow:hidden}.grammar-topic-card:hover{border-color:#5b7cfa5c;transform:translateY(-2px)}.grammar-topic-card.is-active{border-color:#5b7cfa6b;box-shadow:0 22px 60px #5b7cfa1f}.grammar-topic-card h2{font-size:1.08rem;line-height:1.1}.grammar-topic-card p{color:var(--text-muted);margin-bottom:0;font-size:.9rem;line-height:1.55}.grammar-topic-order,.grammar-count{border:1px solid var(--card-border);border-radius:var(--button-radius);width:fit-content;color:var(--text-muted);background:var(--page-bg);padding:7px 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h2{margin-bottom:10px}.grammar-detail-panel p{max-width:920px;color:var(--text-soft);margin-bottom:0;line-height:1.75}.grammar-topic-header{width:100%;color:var(--text-primary);text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;gap:18px;padding:24px;display:flex}.grammar-topic-header:hover{background:#5b7cfa14}.grammar-topic-header h2{margin-bottom:8px}.grammar-topic-header p:not(.eyebrow){color:var(--text-muted);margin-bottom:0}.grammar-topic-header>span{border-radius:var(--button-radius);color:#fff;background:linear-gradient(135deg,#5b7cfa,#7c3aed);flex:none;place-items:center;width:42px;height:42px;font-size:1.4rem;font-weight:900;display:grid}.grammar-topic-content{border-top:1px solid var(--history-border);gap:18px;padding:24px;animation:.18s 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