:root{color-scheme:light;--bg:#f4efe7;--surface:#fffdf9;--text:#1e1e1b;--muted:#6c685f;--line:#ddd6ca;--accent:#b85f35;--accent-soft:#f2e6dd;--danger:#b64b3d;--warn:#c9892e;--good:#3e8a55;--easy:#2f6f8f;--font-body:"Hiragino Sans GB","Noto Sans SC",sans-serif;--font-display:"Iowan Old Style","STKaiti",serif}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:var(--font-body)}button,input{font:inherit}button{cursor:pointer}ruby rt{font-size:.65em}.app-shell{width:min(100%,760px);margin:0 auto;padding:24px 16px 48px}.immersive-mode{width:min(100%,840px)}.complete-shell,.immersive-shell,.setup-shell{display:grid;grid-gap:24px;gap:24px}.complete-shell h2,.setup-header h1,.simple-title-row h2{margin:0;font-family:var(--font-display)}.setup-header h1{margin-top:8px;font-size:clamp(2rem,5vw,2.7rem);line-height:1.08}.example-label,.eyebrow,.face-label{margin:0;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.example-zh,.extra-note,.hero-copy,.panel-hint,.tap-hint{color:var(--muted);line-height:1.55}.queue-summary,.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px}.queue-summary{grid-template-columns:repeat(4,minmax(0,1fr))}.queue-summary article,.stats-grid article{padding:12px 0;border-top:1px solid var(--line)}.next-due span,.queue-summary span,.stats-grid span{display:block;color:var(--muted);font-size:.82rem}.next-due strong,.queue-summary strong,.stats-grid strong{display:block;margin-top:6px;font-size:1.35rem}.simple-section{display:grid;grid-gap:14px;gap:14px;padding-top:18px;border-top:1px solid var(--line)}.next-due,.simple-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.filter-row{display:flex;flex-wrap:wrap;gap:8px}.audio-replay,.filter-row button{border:1px solid var(--line);border-radius:999px;padding:8px 12px;background:transparent;color:var(--muted)}.filter-row .chip-active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.setting-stack{display:grid;grid-gap:8px;gap:8px}.setting-stack span{font-weight:700}.learned-list{display:grid;grid-gap:10px;gap:10px}.learned-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid var(--line)}.learned-main{display:grid;grid-gap:4px;gap:4px}.learned-main strong{font-size:.98rem}.learned-due,.learned-main span,.learned-side span{color:var(--muted);font-size:.82rem}.learned-side{display:grid;justify-items:end;grid-gap:4px;gap:4px;text-align:right}.action-row{justify-content:start}.secondary-link{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:999px;color:var(--text);text-decoration:none}.toggle-field{display:flex;align-items:center;gap:12px;padding-top:4px}.exit-button,.exit-float,.start-button{min-height:52px;border-radius:14px;border:1px solid var(--line);background:transparent}.start-button{border-color:var(--accent);color:var(--accent);font-weight:800}.card-shell{padding-top:8px;position:relative}.card-topline{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.card-meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted);font-size:.86rem;flex:1 1;justify-content:center}.card-corner{display:flex;align-items:flex-start;gap:10px}.card-progress{display:grid;justify-items:end;grid-gap:4px;gap:4px;color:var(--muted);font-size:.82rem;text-align:right}.exit-float{min-height:auto;padding:6px 10px;border-radius:999px;color:var(--muted);flex-shrink:0}.flashcard-face{width:100%;margin-top:16px;border:1px solid var(--line);border-radius:20px;padding:32px 18px;background:var(--surface);min-height:300px;display:grid;align-content:center;justify-items:center}.flashcard-face h1{margin:8px 0;font-size:clamp(2.6rem,12vw,4.3rem);line-height:1}.definition,.example-jp,.example-zh,.extra-note,.pitch,.reading,.tap-hint{margin:0}.reading{font-size:1.05rem;color:var(--muted)}.reading-primary{font-size:clamp(2rem,10vw,3.2rem);line-height:1.1;color:var(--text)}.kanji-secondary{font-size:clamp(1.8rem,8vw,3rem)!important;color:var(--muted)}.pitch{margin-top:8px;color:var(--accent)}.answer-panel,.tap-hint{margin-top:18px}.answer-panel{display:grid;grid-gap:16px;gap:16px;padding-bottom:104px}.definition{font-size:1.25rem;font-weight:700}.example-card{display:grid;grid-gap:10px;gap:10px;padding:14px 0 0;border-top:1px solid var(--line)}.example-jp{line-height:1.85;font-size:1.04rem}.audio-replay{width:-moz-fit-content;width:fit-content}.next-due{padding-top:8px;border-top:1px solid var(--line)}.rating-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:8px;gap:8px}.rating-dock{position:fixed;left:0;right:0;bottom:0;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(244,239,231,.96);border-top:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.rating-dock .rating-grid{width:min(100%,808px);margin:0 auto}.rating-button{border:1px solid transparent;padding:9px 8px;border-radius:12px;color:white;display:grid;grid-gap:2px;gap:2px;justify-items:center;text-align:center}.rating-button span{font-weight:800;font-size:.88rem}.rating-button small{opacity:.88;font-size:.7rem}.rating-again{background:var(--danger)}.rating-hard{background:var(--warn)}.rating-good{background:var(--good)}.rating-easy{background:var(--easy)}.complete-shell{padding-top:24px}@media (max-width:640px){.queue-summary,.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.next-due,.simple-title-row{flex-direction:column;align-items:flex-start}.card-topline{align-items:stretch}.card-corner{flex-direction:column;align-items:flex-end}.card-progress{justify-items:end;text-align:right}}