@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&display=swap');
:root{--ink:#142b47;--muted:#526174;--blue:#2456b4;--red:#ba3b29;--line:#ced5df;--paper:#fff;--bg:#f2f5fa}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 'DM Sans',Arial,sans-serif}a{color:inherit}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #da8620;outline-offset:3px}button:disabled{cursor:wait;opacity:.65}[hidden]{display:none!important}.skip{position:absolute;top:-80px}.skip:focus{top:8px;z-index:10;background:white;padding:8px}.masthead,main,footer{max-width:1200px;margin:auto}.masthead{display:flex;align-items:center;justify-content:space-between;padding:28px 36px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-weight:700;font-size:15px;letter-spacing:.06em}.brand 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@media(max-width:760px){.masthead{padding:18px 20px}main{padding:0 20px}.intro{grid-template-columns:1fr;gap:24px;padding:32px 0}.intro h1{font-size:43px}.checkin{padding:24px}.meta{gap:10px;font-size:12px}.meta span+span{padding-left:10px}.lesson-nav{gap:20px;overflow-x:auto}.lesson-nav a{padding:14px 0}.lesson-nav span{margin-left:5px;font-size:14px}.section-heading{display:block}.section-heading>p{margin-top:14px;max-width:none}.section-heading h2{font-size:26px}.letter-layout{grid-template-columns:1fr;gap:22px}.explainer{position:static;grid-row:1;background:#e5ecf8;padding:20px}.explainer .big-number{float:right;font-size:40px}.explainer h3{margin-top:0}.explainer .rule{margin:15px 0}.explainer .note{display:none}.letter-paper{padding:25px 18px 25px 48px;font-size:14px}.notation-grid{grid-template-columns:1fr 1fr}.vocab-grid,#exercise,.resource-grid{grid-template-columns:1fr}.practice-switch button{flex:1;font-size:13px;padding:10px}.brand{font-size:12px}.brand small{font-size:9px}.plain{font-size:12px}footer{padding:20px;flex-wrap:wrap}.question{padding:20px}.view{padding-top:25px}}
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.drag-bank{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:8px;padding:16px;background:#e5ecf8;position:sticky;top:var(--navigation-height,64px);z-index:1;align-self:start;box-shadow:0 4px 8px #142b4712;border:1px solid var(--line)}.word-chip{background:white;color:var(--blue);border:1px solid var(--blue);padding:8px 12px;border-radius:3px;font-weight:600;cursor:grab}.word-chip[aria-pressed=true]{background:var(--blue);color:white;outline:3px solid #da8620}.word-chip:disabled{opacity:.4;cursor:default}.drag-notice{grid-column:1/-1;font-size:14px;color:var(--muted);margin:0}.drag-notice:empty{display:none}.gap-slot{display:inline-block;min-width:145px;max-width:100%;min-height:44px;padding:6px 10px;margin:4px 0;background:#f2f5fa;color:var(--blue);border:2px dashed var(--blue);border-radius:3px;vertical-align:middle;cursor:pointer}.gap-slot.filled{border-style:solid;background:#e5ecf8;cursor:grab}.gap-slot.drag-over{background:#ffecd4;border-color:#da8620}.drag-sentence{line-height:2}@media(max-width:760px){.drag-bank{padding:10px;gap:6px}.word-chip{font-size:14px;padding:7px 9px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

#exercise:has(.drag-bank) .question{scroll-margin-top:calc(var(--navigation-height,64px) + var(--word-bank-height,100px) + 16px)}