:root{--bg:#0a0e1a;--bg-2:#0f1524;--panel:#141c2f;--panel-2:#1b2540;--line:#29334f;--text:#e9eefb;--muted:#8a97b6;--accent:#7c9cff;--accent-2:#a78bfa;--ok:#34d399;--bad:#fb7185;--gold:#fbbf24;--radius:16px;--shadow:0 10px 30px #00000059;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{background:var(--bg);color:var(--text);overscroll-behavior:none;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body{background:radial-gradient(1200px 600px at 50% -10%, #7c9cff24, transparent 60%), var(--bg);min-height:100dvh}#root{min-height:100dvh}.app{max-width:780px;padding:max(16px, env(safe-area-inset-top)) 16px calc(24px + env(safe-area-inset-bottom));margin:0 auto}button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation}.muted{color:var(--muted)}.small{font-size:12px}.section-label{letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:22px 0 10px;font-size:12px}.hint-line{color:var(--muted);margin:10px 2px 0;font-size:13px}.hero{align-items:center;gap:14px;margin:6px 0 20px;display:flex}.hero__mark{box-shadow:var(--shadow);background:linear-gradient(145deg,#7c9cff40,#a78bfa2e);border:1px solid #7c9cff59;border-radius:18px;padding:12px 14px;font-family:Hiragino Sans,Yu Gothic,Noto Sans CJK JP,system-ui,sans-serif;font-size:34px;font-weight:800;line-height:1}.hero__title{letter-spacing:-.02em;margin:0;font-size:26px}.hero__sub{color:var(--muted);margin:2px 0 0;font-size:13px}.stats{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:repeat(4,1fr);gap:8px;padding:14px;display:grid}.stat{flex-direction:column;align-items:center;gap:3px;display:flex}.stat__value{font-size:20px;font-weight:700}.stat__label{letter-spacing:.04em;text-transform:uppercase;color:var(--muted);text-align:center;font-size:10.5px}.chips{scrollbar-width:none;gap:8px;padding-bottom:4px;display:flex;overflow-x:auto}.chips::-webkit-scrollbar{display:none}.chip-btn{border:1px solid var(--line);background:var(--panel);border-radius:14px;flex-direction:column;flex:none;align-items:flex-start;gap:2px;min-width:92px;padding:10px 14px;transition:border-color .15s,background .15s;display:flex;position:relative}.chip-btn__native{font-family:Hiragino Sans,Yu Gothic,Noto Sans CJK 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10px;padding:14px 16px;transition:transform .12s,border-color .15s;display:grid}.deck:active{border-color:var(--accent);transform:scale(.985)}.deck__title{grid-area:1/1;font-size:15px;font-weight:650}.deck__desc{color:var(--muted);grid-area:2/1;font-size:12px}.deck__count{color:var(--muted);white-space:nowrap;grid-area:1/2/span 2;align-self:center;font-size:11px}.soon-card{border-radius:var(--radius);border:1px dashed var(--line);background:var(--bg-2);margin-top:22px;padding:20px}.soon-card h2{margin:0 0 8px;font-size:18px}.btn{border:1px solid var(--line);background:var(--panel-2);border-radius:12px;padding:11px 18px;font-size:14px;font-weight:600;transition:filter .15s,transform .1s}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.45;cursor:default}.btn--primary{background:linear-gradient(180deg, var(--accent), #5b78e6);color:#0a0e1a;border-color:#0000}.btn--ghost{background:0 0}.btn--sm{padding:7px 12px;font-size:12.5px}.btn--block{width:100%;margin-top:14px}.row{flex-wrap:wrap;gap:10px;display:flex}.row--center{justify-content:center}.drill{flex-direction:column;min-height:calc(100dvh - 40px);display:flex}.drill__bar{justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;display:flex}.drill__meta{gap:6px;display:flex}.chip{background:var(--panel-2);border:1px solid var(--line);border-radius:999px;align-items:center;padding:5px 10px;font-size:12px;display:inline-flex}.chip--accent{color:var(--gold)}.chip--ok{color:var(--ok);border-color:#34d39980}.chip--bad{color:var(--bad);border-color:#fb718580}.drill__stage{flex-direction:column;flex:1;justify-content:center;gap:16px;display:flex}.prompt{text-align:center}.prompt__label{letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 4px;font-size:12px}.prompt__glyph{text-shadow:0 6px 30px #7c9cff40;font-family:Hiragino Sans,Yu Gothic,Noto Sans CJK JP,Noto Sans 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JP,system-ui,sans-serif;font-size:20px}.keyboard{-webkit-user-select:none;user-select:none;flex-direction:column;gap:6px;margin-top:4px;display:flex}.keyboard--disabled{opacity:.35;pointer-events:none}.keyboard__row{justify-content:center;gap:6px;display:flex}.key{border:1px solid var(--line);background:var(--panel-2);border-radius:10px;flex:1 1 0;justify-content:center;align-items:center;min-width:0;height:48px;font-size:16px;font-weight:600;display:flex}.key:active{background:var(--accent);color:#0a0e1a}.key--action{flex:1.6 1 0}.key--wide{flex:100%;height:50px}.key--submit{background:linear-gradient(180deg, var(--accent), #5b78e6);color:#0a0e1a;border-color:#0000}.so{flex-direction:column;gap:12px;display:flex}.so__pad{aspect-ratio:1;border:1px solid var(--line);background:repeating-linear-gradient(0deg, transparent 0 49.7%, #94a3b81f 49.7% 50.3%, transparent 50.3%), repeating-linear-gradient(90deg, transparent 0 49.7%, #94a3b81f 49.7% 50.3%, transparent 50.3%), var(--panel);width:100%;max-height:56vh;box-shadow:var(--shadow);touch-action:none;border-radius:20px;margin:0 auto;position:relative;overflow:hidden}.so__writer{justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.so__writer svg{display:block}.so__overlay{pointer-events:none;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.so__badge{white-space:nowrap;color:var(--muted);border:1px solid var(--line);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#0a0e1ab8;border-radius:999px;padding:5px 12px;font-size:12px;position:absolute;bottom:10px;left:50%;transform:translate(-50%)}.so__info{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;display:flex}.so__toolbar{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.drill__footer{flex-direction:column;gap:10px;margin-top:16px;display:flex}.panel{border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);padding:24px}.panel--center{text-align:center;flex-direction:column;align-items:center;gap:12px;margin-top:12vh;display:flex}.eyebrow{letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0;font-size:12px}.score-big{background:linear-gradient(180deg, var(--accent), var(--accent-2));color:#0000;-webkit-background-clip:text;background-clip:text;font-size:64px;font-weight:800}.home__footer{flex-direction:column;align-items:center;gap:8px;margin-top:34px;display:flex}@media (width>=560px){.key{height:54px;font-size:17px}}.icon-btn{border:1px solid var(--line);background:var(--panel-2);min-width:46px;height:46px;color:var(--muted);border-radius:12px;justify-content:center;align-items:center;padding:0 12px;font-size:15px;font-weight:600;transition:border-color .15s,color .15s,background .15s;display:inline-flex}.icon-btn:disabled{opacity:.4}.icon-btn--on{color:var(--gold);border-color:#fbbf2480}.icon-btn--wide{width:100%;color:var(--text);margin-top:2px}.study-cta{text-align:left;border:1px solid var(--line);background:linear-gradient(#7c9cff1f,#7c9cff08);border-radius:16px;align-items:center;gap:14px;width:100%;margin-top:18px;padding:16px 18px;transition:transform .12s,border-color .15s;display:flex}.study-cta:active{border-color:var(--accent);transform:scale(.99)}.study-cta__icon{font-size:24px}.study-cta__body{flex-direction:column;flex:1;gap:2px;display:flex}.study-cta__title{font-size:15px;font-weight:700}.study-cta__hint{color:var(--muted);font-size:12px}.study-cta__arrow{color:var(--accent);font-size:18px}.study{flex-direction:column;display:flex}.segmented{border:1px solid var(--line);background:var(--panel);border-radius:12px;gap:4px;padding:3px;display:flex}.segmented__item{color:var(--muted);background:0 0;border:none;border-radius:9px;padding:7px 14px;font-size:13px;font-weight:600}.segmented__item--active{background:var(--panel-2);color:var(--text)}.chips--wrap{flex-wrap:wrap;margin-top:14px;overflow:visible}.chip-btn--sm{border-radius:999px;min-width:0;padding:7px 12px}.chart{grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:8px;margin-top:14px;display:grid}.chart__cell{border:1px solid var(--line);background:var(--panel);border-radius:12px;flex-direction:column;align-items:center;gap:2px;padding:10px 4px 8px;transition:transform .1s,border-color .15s;display:flex}.chart__cell:active{border-color:var(--accent);transform:scale(.95)}.chart__glyph{font-family:Hiragino Sans,Yu Gothic,Noto Sans CJK JP,system-ui,sans-serif;font-size:30px;line-height:1.15}.chart__reading{color:var(--muted);font-size:10px}