:root{--navy:#0656b5;--navy-2:#0656b5;--navy-dark:#04458f;--charcoal:#222;--gold:#0656b5;--bg:#f4f6f9;--card:#fff;--text:#222;--muted:#5c6577;--line:#e1e5ec;--green:#1f7a4d;--green-bg:#e6f4ec;--red:#b42318;--red-bg:#fdecea;--amber-bg:#fff6e0;--navy-soft:#eaf2fc;--navy-soft-line:#cddff6}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.55}a{color:var(--navy-2)}.topbar{color:var(--charcoal);border-bottom:3px solid var(--navy);background:#fff;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;display:flex}.brand{align-items:center;gap:10px;text-decoration:none;display:flex}.brand img{width:auto;height:38px;display:block}.brand span{letter-spacing:3px;text-transform:uppercase;color:var(--navy);border-left:2px solid var(--line);padding-left:10px;font-size:13px;font-weight:700}.topbar 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#0656b524}.deck:disabled{opacity:.55;cursor:default}.deck b{font-size:16px}.deck .muted{font-size:13px}.deck .count{color:var(--navy);background:var(--navy-soft);border-radius:99px;align-self:flex-start;margin-top:6px;padding:2px 8px;font-size:12px;font-weight:700}.fc-meta{max-width:720px;color:var(--muted);justify-content:space-between;margin:0 auto 6px;font-size:13px;font-weight:600;display:flex}.fc-bar{background:var(--navy-soft);border-radius:99px;max-width:720px;height:6px;margin:0 auto 14px;overflow:hidden}.fc-bar>div{background:var(--navy);height:100%;transition:width .2s}.flashcard{aspect-ratio:16/9;cursor:pointer;perspective:1400px;width:100%;max-width:720px;min-height:240px;font:inherit;color:inherit;background:0 0;border:0;margin:0 auto;padding:0;display:block;position:relative}.flashcard .face{text-align:center;border:1px solid var(--line);backface-visibility:hidden;background:#fff;border-radius:20px;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:28px;transition:transform .45s;display:flex;position:absolute;inset:0;box-shadow:0 8px 24px #10182814}.flashcard .back{background:linear-gradient(180deg, #fff, var(--navy-soft));border-color:var(--navy-soft-line);transform:rotateY(180deg)}.flashcard.flipped .front{transform:rotateY(-180deg)}.flashcard.flipped .back{transform:rotateY(0)}.flashcard:focus-visible .face{outline:2px solid var(--navy);outline-offset:3px}.side-lbl{letter-spacing:1.5px;text-transform:uppercase;color:var(--navy);font-size:11px;font-weight:700;position:absolute;top:16px;left:20px}.fc-text{color:var(--charcoal);font-size:26px;font-weight:700;line-height:1.3}.fc-text.small{font-size:18px;font-weight:600}.fc-sub{color:var(--muted);font-size:15px}.fc-note{color:var(--muted);max-width:560px;font-size:14px}.hint{color:#9aa3b2;font-size:12px;position:absolute;bottom:14px}.fc-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:16px;display:flex}.fc-done{text-align:center;max-width:720px;margin:0 auto}.big-score{color:var(--navy);margin:0;font-size:44px;font-weight:800}@media (max-width:900px){.decks{grid-template-columns:repeat(2,minmax(0,1fr))}.flashcard{aspect-ratio:1}.fc-text{font-size:21px}.fc-text.small{font-size:16px}}