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23px}#study{max-width:680px;margin:auto}.study-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;font-size:11px;color:#86907d}.flashcard{width:100%;height:300px;padding:0;background:transparent;perspective:1200px;text-align:center;border-radius:14px}.card-inner{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .48s cubic-bezier(.2,.7,.3,1)}.flashcard.flipped .card-inner{transform:rotateY(180deg)}.face{position:absolute;inset:0;display:flex;align-items:center;flex-direction:column;padding:25px 32px;border-radius:14px;backface-visibility:hidden;background:#f2f5e9;border:1px solid #e0e6d4}.back{background:#e7f0e7;border-color:#d5e3d7;transform:rotateY(180deg)}.side-label{letter-spacing:2px;font-size:10px;color:#80916c}.card-text{font-family:Georgia,serif;font-size:28px;line-height:1.4;white-space:pre-wrap;overflow-wrap:anywhere;overflow:auto;width:100%;flex:1;align-content:center;padding:17px 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.collection-bar{border-bottom:1px solid var(--line);padding:20px 0}.collection-bar>label{display:block;font-size:9px;letter-spacing:1.6px;color:#87977b;font-weight:700;margin-bottom:9px}.collection-controls{display:flex;align-items:center;gap:14px;flex-wrap:wrap}select{font:inherit;color:var(--ink);border:1px solid #dce3d3;border-radius:8px;background:#f7f9f1;padding:11px 34px 11px 12px;max-width:100%;cursor:pointer}.collection-controls select{flex:1;min-width:180px;font-size:14px}.collection-controls .secondary{font-size:12px;padding:12px 14px}form select{display:block;width:100%;margin-top:9px;font-size:14px}.name-input{display:block;width:100%;border:1px solid #dce3d3;border-radius:8px;background:#f9faf6;color:var(--ink);padding:13px;margin-top:9px;font:inherit}select:focus-visible,.name-input:focus{outline:2px solid #8bab88}.collection-badge{font-size:10px;color:#758866;margin-top:9px;overflow-wrap:anywhere}#collection-error{color:#a24a40;font-size:12px}@media(max-width:700px){.collection-controls{gap:10px}.collection-controls select{min-width:100%}.collection-bar{padding:16px 0}}

.match-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap}.match-toolbar label{font-size:12px;color:#7b8973;display:flex;align-items:center;gap:12px}.match-toolbar select{font-size:12px;padding:10px 28px 10px 12px}.match-stats{display:flex;justify-content:space-between;color:#7b8973;font-size:12px;padding:20px 0 0}.match-status{background:#f3f6ec;border-radius:8px;padding:13px 16px;font-size:13px;line-height:1.5;color:#668052;margin:14px 0 22px;min-height:45px}.match-status.wrong{background:#fbede8;color:#a35e4d}.match-board{display:grid;grid-template-columns:1fr 1fr;gap:20px}.match-column-title{font:700 10px Arial,sans-serif;letter-spacing:1.5px;color:#8a997c;margin:0 0 12px}.match-column{display:flex;flex-direction:column;gap:12px}.match-tile{width:100%;min-height:98px;text-align:left;background:#fafbf6;border:1px solid #e0e6d6;border-radius:11px;padding:17px 20px;color:var(--ink);font:18px/1.45 Georgia,serif;white-space:pre-wrap;overflow-wrap:anywhere;transition:background .15s,border-color .15s,box-shadow .15s}.match-tile:hover{background:#f0f4e7;border-color:#a5b895}.match-tile.selected{background:#e6eee0;border-color:#658853;box-shadow:0 0 0 2px #65885333}.match-tile.wrong{border-color:#c87b62;background:#fff0e8}.match-tile.matched{background:#e9f1e8;border-color:#b9d0b4;color:#76946d;opacity:.65;cursor:default}.match-tile.matched::before{content:'✓ ';font-family:Arial,sans-serif}.match-tile-text{display:block;max-height:180px;overflow-y:auto}.match-complete{text-align:center;background:#f3f7ed;border:1px solid #dce7d2;border-radius:14px;padding:28px 20px;margin:24px 0 0}.match-complete>span{font-size:40px;color:#92a666}.match-complete h3{font-size:26px;margin:8px 0}.match-complete p{font-size:13px;color:#809071;margin:10px 0 20px}@media(max-width:700px){.toolbar{flex-wrap:wrap;padding-bottom:8px}.tabs{gap:20px}.tools{margin-left:auto}.match-board{gap:10px}.match-column{gap:10px}.match-tile{padding:13px 11px;font-size:15px;min-height:105px}.match-toolbar .primary{padding:12px 15px;font-size:12px}.match-status{font-size:12px}}

.account-name{font-size:12px;color:#728469}.auth-shell{display:grid;grid-template-columns:1fr 1fr;gap:65px;background:white;border:1px solid var(--line);border-radius:18px;padding:42px;margin-bottom:10px}.auth-intro{padding-top:28px}.auth-intro h2{font-size:33px;line-height:1.2;margin-top:18px}.auth-intro p{font-size:15px;line-height:1.8;color:#7d8976;max-width:320px}.auth-note{font-size:12px;color:#8a967f;line-height:1.7}.auth-tabs{display:flex;gap:20px;border-bottom:1px solid var(--line);margin-bottom:24px}.auth-tabs button{background:none;padding:0 0 12px;color:#8c9782;font-size:13px;border-bottom:2px solid transparent}.auth-tabs .active{color:var(--green);border-color:var(--green)}#auth-error{color:#aa584b;line-height:1.5;font-size:13px}#auth-form>.primary{margin-top:8px}#recover-mode{display:block;margin-top:12px}.password-label{float:none;font-size:13px;color:var(--ink);font-weight:600}form .password-label{float:none;font-size:13px;color:var(--ink);font-weight:600}.migration-banner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);font-size:13px}.migration-banner p{font-size:12px;color:#8a957f;margin:8px 0 0}.migration-banner .secondary{font-size:12px;white-space:nowrap}#recovery-output{font-family:monospace;font-size:13px}@media(max-width:700px){.auth-shell{grid-template-columns:1fr;gap:20px;padding:24px}.auth-intro{padding:0}.auth-intro h2{font-size:27px}.auth-intro p{font-size:13px}.account-name{max-width:65px;overflow:hidden;text-overflow:ellipsis}header{flex-wrap:wrap}header .brand{margin-right:auto}header>.primary{margin-left:0}.migration-banner{flex-direction:column;align-items:flex-start}}

#email-error{color:#aa584b;font-size:13px;line-height:1.5}#auth-message{color:#4b7855}

.revision-options{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.revision-options label{font-size:11px;color:#7e8c74;display:flex;flex-direction:column;gap:8px;flex:1;min-width:145px}.revision-options select{font-size:12px;width:100%}.revision-options>.primary{font-size:12px;white-space:nowrap;padding:13px 16px}.revision-help{font-size:12px;line-height:1.6;color:#819075;margin:16px 0 25px}.revision-welcome{text-align:center;background:#f7f9f1;border:1px dashed #dce5d0;border-radius:14px;padding:32px 20px}.revision-welcome>span{font-size:42px;color:#92a36f}.revision-welcome h3{font-size:27px}.revision-welcome p{font-size:13px;line-height:1.8;color:#849477}.revision-meta{display:flex;justify-content:space-between;color:#819075;font-size:12px;margin:18px 0 10px}#revision-progress-bar{width:100%;height:7px;accent-color:var(--green)}.revision-question{background:#f3f6eb;border:1px solid #e0e6d5;border-radius:13px;padding:26px;margin:20px 0}.revision-question h3{font-size:27px;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;margin:15px 0 0}.revision-choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}.revision-choice{background:#fafbf7;border:1px solid #dfe6d5;border-radius:10px;text-align:left;padding:18px;color:var(--ink);font:17px/1.5 Georgia,serif;white-space:pre-wrap;overflow-wrap:anywhere}.revision-choice:hover{background:#edf3e5;border-color:#90a87b}.revision-choice.correct{background:#e4f0e1;border-color:#87ac77}.revision-choice.incorrect{background:#fbede7;border-color:#c58b79}.revision-choice:disabled{opacity:1;cursor:default}.revision-choice .choice-marker{font-family:Arial,sans-serif;font-size:10px;letter-spacing:1px;display:block;margin-bottom:7px;color:#8b997c}.revision-feedback{background:#edf5e8;border:1px solid #d9e5ce;border-radius:10px;padding:18px;margin-top:20px;font-size:13px;line-height:1.7}.revision-feedback.incorrect{background:#fbf0e9;border-color:#edd7c9}.revision-feedback p{white-space:pre-wrap;overflow-wrap:anywhere;margin:7px 0}.revision-feedback .text-btn{color:var(--green);text-decoration:underline;text-align:left;line-height:1.6}#revision-answer-note{font-size:11px;color:#849075}.revision-actions{display:flex;gap:12px;justify-content:flex-end;margin:20px 0 0;flex-wrap:wrap}#revision-written>label{font-weight:400;color:#839476;font-size:12px}#revision-written .primary{margin-top:12px}.revision-summary{background:#f7f9f2;border:1px solid #e1e8d5;border-radius:14px;padding:28px;margin-top:20px}.revision-summary h3{font-size:34px;margin:14px 0}.revision-summary>p{font-size:13px;color:#829273;line-height:1.6}.revision-summary .revision-actions{justify-content:flex-start}#revision-review-title{font-family:Georgia,serif;font-size:21px;font-weight:400;margin:30px 0 14px}.revision-review-card{background:white;border:1px solid #e0e6d7;border-radius:10px;padding:17px;margin-top:12px;font-size:13px;line-height:1.7;overflow-wrap:anywhere;white-space:pre-wrap}.revision-review-card strong{display:block;font-family:Georgia,serif;font-size:18px;font-weight:400}.revision-review-card p{margin:8px 0;color:#7b8e6d}.revision-review-card .review-response{color:#a28274}@media(max-width:700px){.tabs{gap:17px;width:100%;overflow-x:auto}.tabs button{white-space:nowrap;font-size:12px}.tabs span{margin-left:2px}.revision-choices{grid-template-columns:1fr}.revision-question{padding:20px}.revision-question h3{font-size:24px}.revision-options label{min-width:125px}.revision-options>.primary{width:100%}.revision-summary{padding:22px}.revision-welcome h3{font-size:23px}}