nav{z-index:100;flex-wrap:wrap;justify-content:space-between;align-items:center;padding:1.25rem 3rem;transition:background .3s,box-shadow .3s;display:flex;position:sticky;top:0}.site-notices{flex-direction:column;flex:0 0 100%;order:2;gap:.5rem;margin-top:.75rem;display:flex}.site-notice{border-left:4px solid var(--gold);background:var(--card);color:var(--ink);border-radius:8px;align-items:center;gap:.75rem;padding:.5rem .25rem .5rem 1rem;font-size:.95rem;display:flex;box-shadow:0 4px 16px #12231a14}.site-notice span{overflow-wrap:anywhere;flex:1}.site-notice button{min-width:44px;min-height:44px;color:var(--bark);cursor:pointer;background:0 0;border:none;flex-shrink:0;font-size:1.4rem;line-height:1}nav.scrolled{background:var(--nav-bar);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 1px #1b43321a}.nav-logo{font-family:var(--serif);color:var(--text-forest);letter-spacing:.01em;font-size:1.25rem;text-decoration:none}.nav-logo 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b{letter-spacing:.1em;text-transform:uppercase;color:var(--bark);margin-left:auto;font-size:.68rem;font-weight:600}.mock-eyebrow{letter-spacing:.12em;text-transform:uppercase;color:var(--text-forest-mid);font-size:.7rem;font-weight:600}.explore-english .mock-eyebrow{color:var(--text-sky)}.mock-title{font-family:var(--serif);font-size:1.2rem;line-height:1.2}.mock-steps{gap:5px;display:flex}.mock-steps i{background:var(--cream-mid);border-radius:4px;width:18px;height:4px}.mock-steps i.on{background:var(--gold)}.mock-example{border-left:4px solid var(--gold);background:var(--cream);border-radius:12px;flex-direction:column;gap:.3rem;padding:.9rem 1rem;display:flex}.mock-sentence{font-family:var(--serif);font-size:1.05rem;line-height:1.3}.mock-meaning,.mock-hint{color:var(--bark);font-size:.85rem}.mock-hint{font-style:italic}.mock-btn{background:var(--forest);color:var(--on-dark);white-space:nowrap;border-radius:100px;align-self:flex-start;align-items:center;padding:.45rem 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0;position:relative}.mock-card-face{background:var(--forest);color:var(--on-dark);font-family:var(--serif);text-align:center;backface-visibility:hidden;border-radius:14px;justify-content:center;align-items:center;padding:1rem;font-size:1.3rem;line-height:1.2;animation:4.5s ease-in-out both mock-flip;display:flex;position:absolute;inset:0}.explore-english .mock-card-face{background:var(--sky)}.mock .mock-card-back{background:var(--gold);color:var(--on-gold);font-family:var(--sans);font-size:.95rem;animation-name:mock-flip-back}@keyframes mock-flip{0%,35%{transform:rotateY(0)}50%,to{transform:rotateY(180deg)}}@keyframes mock-flip-back{0%,35%{transform:rotateY(180deg)}50%,to{transform:rotateY(360deg)}}.mock-choices{grid-template-columns:1fr 1fr;gap:.45rem;display:grid}.mock-choices i{border:1px solid var(--field-border);background:var(--field);overflow-wrap:anywhere;text-align:center;border-radius:10px;padding:.45rem .4rem;font-size:.82rem}.mock-choices i.pick{animation:.4s 1.2s both 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