:root{--bg:#f3f6fb;--card:#fff;--ink:#1f2937;--sub:#6b7280;--line:#e5e7eb;--primary:#2563eb;--primary2:#1d4ed8;--accent:#f59e0b;--ok:#16a34a;--ng:#dc2626;--fire:#ea580c;--gacha:#7c3aed;--radius:16px}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;font-size:16px;line-height:1.5}
#app{max-width:560px;margin:0 auto;padding:12px 12px 40px}
.screen{animation:fade .18s ease}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.hero{background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;border-radius:var(--radius);padding:18px 16px;margin-bottom:12px;box-shadow:0 6px 18px rgba(37,99,235,.25)}
.hero-badge{display:inline-block;background:rgba(255,255,255,.2);border-radius:999px;padding:2px 10px;font-size:12px}
.hero h1{margin:6px 0 2px;font-size:26px;letter-spacing:.02em}
.hero-sub{margin:0;font-size:13px;opacity:.92}
.card{background:var(--card);border-radius:var(--radius);padding:14px;margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.05);border:1px solid var(--line)}
.card-title{font-weight:700;font-size:15px;margin-bottom:6px}
.card-sub{font-size:12.5px;color:var(--sub)}
.btn{display:block;width:100%;border:0;border-radius:12px;padding:12px 14px;font-size:15px;font-weight:700;cursor:pointer;color:#fff;background:#94a3b8;transition:transform .05s}
.btn:active{transform:scale(.98)}
.btn.sm{padding:8px 10px;font-size:13px;width:auto}
.btn-primary{background:var(--primary)}
.btn-ghost{background:#eef2ff;color:var(--primary2)}
.btn-fire{background:var(--fire)}
.btn-dark{background:#111827}
.btn-ok{background:var(--ok)}
.btn-ng{background:var(--ng)}
.btn-gacha{background:linear-gradient(135deg,#7c3aed,#db2777)}
.btn-gacha.big{padding:16px;font-size:17px}
.btn-logout{background:#64748b}
.btn-next{background:var(--accent);color:#1f2937;margin-top:10px}
.btn-row{display:flex;gap:8px;margin-top:10px}
.btn-row .btn{flex:1}
.btn-row.col{flex-direction:column}
.reg-banner{text-align:left;cursor:pointer;background:#fff7ed;border:2px dashed #fb923c;width:100%;font:inherit;color:var(--ink)}
.reg-banner span{font-size:12px;color:var(--sub)}
.rank-row{display:flex;align-items:center;gap:12px}
.rank-icon{font-size:40px;width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:#fef3c7;border-radius:50%}
.rank-info{flex:1;min-width:0}
.rank-name{font-weight:800;font-size:18px}
.my-title{display:inline-block;margin-left:8px;font-size:12px;background:#ede9fe;color:#6d28d9;border-radius:999px;padding:1px 8px;vertical-align:middle}
.rank-next{font-size:12px;color:var(--sub)}
.meter{height:10px;background:#e5e7eb;border-radius:999px;overflow:hidden}
.meter-fill{height:100%;background:linear-gradient(90deg,#f59e0b,#f97316);width:0;transition:width .4s}
.rank-meter{margin-top:4px}
.sound-btn,.speak-btn{border:0;background:#eef2ff;border-radius:50%;width:40px;height:40px;font-size:18px;cursor:pointer}
.coin-row{display:flex;gap:8px;margin:12px 0 6px}
.coin-stat{flex:1;text-align:center;background:#f8fafc;border-radius:12px;padding:8px 4px}
.coin-num{font-size:24px;font-weight:800;color:#b45309}
.coin-label{font-size:12px;font-weight:700}
.coin-label span{font-weight:400;color:var(--sub);font-size:10.5px}
.name-row{font-size:13px;color:var(--sub);margin:6px 0}
.name-chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:3px 10px;font:inherit;font-size:13px;cursor:pointer}
.logout-panel{margin:6px 0}
.logout-note{font-size:11.5px;color:var(--sub);margin-top:4px}
.book-select{width:100%;font-size:15px;padding:10px;border-radius:10px;border:1px solid var(--line);background:#fff}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.choice-toggle{display:flex;gap:6px}
.choice-toggle button{flex:1;border:2px solid var(--line);background:#fff;border-radius:10px;padding:8px 4px;font-weight:700;font-size:14px;cursor:pointer;color:var(--sub)}
.choice-toggle button.on{border-color:var(--primary);background:#eef2ff;color:var(--primary2)}
.box-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.box-count{font-size:30px;font-weight:800;color:var(--fire);min-width:48px;text-align:center}
/* UNIT一覧 */
.unit-card{background:#fff;border-radius:var(--radius);padding:12px 14px;margin-bottom:10px;border:1px solid var(--line);box-shadow:0 2px 8px rgba(0,0,0,.04)}
.unit-card.locked{opacity:.85}
.unit-head{display:flex;align-items:center;gap:10px}
.unit-no{background:#2563eb;color:#fff;font-weight:800;border-radius:10px;padding:4px 8px;font-size:12px;white-space:nowrap}
.unit-no.sp{background:#0891b2}.unit-no.app{background:#64748b}
.unit-title{flex:1;min-width:0}
.unit-title b{display:block;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.unit-title span{font-size:11.5px;color:var(--sub)}
.unit-star{font-size:18px}
.unit-meta{font-size:12px;color:var(--sub);margin:6px 0 4px;display:flex;justify-content:space-between}
.unit-btns{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:8px}
.unit-btns button{border:0;border-radius:10px;padding:9px 2px;font-size:12.5px;font-weight:700;cursor:pointer;background:#f1f5f9;color:var(--ink);line-height:1.2}
.unit-btns button .ic{display:block;font-size:18px}
.unit-btns button.test{background:#fef3c7;color:#92400e}
.unit-btns button.test.ok{background:#dcfce7;color:#166534}
.unit-btns button:disabled{opacity:.45}
/* 認証 */
.auth-tabs{display:flex;gap:8px;margin-bottom:10px}
.auth-tab{flex:1;border:2px solid var(--line);background:#fff;border-radius:12px;padding:8px;font-weight:700;font-size:13px;color:var(--sub);cursor:pointer}
.auth-tab span{display:block;font-size:15px;color:var(--ink)}
.auth-tab.on{border-color:var(--primary);background:#eef2ff}
.reg-label{display:block;font-size:12.5px;font-weight:700;margin-bottom:8px}
.reg-label input,.reg-label select{display:block;width:100%;margin-top:4px;padding:10px;font-size:16px;border:1px solid var(--line);border-radius:10px;background:#fff}
.reg-row2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.reg-error{color:var(--ng);font-size:13px;min-height:18px;margin:4px 0}
/* クイズ */
.quiz-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.quiz-quit{border:0;background:#e5e7eb;border-radius:50%;width:36px;height:36px;font-size:16px;cursor:pointer}
.quiz-mode{font-weight:700;font-size:14px;text-align:center;flex:1;padding:0 6px}
.quiz-progress-num{font-weight:700;color:var(--sub);font-size:13px;min-width:44px;text-align:right}
.quiz-meter{margin-bottom:12px}
.q-word-wrap{background:#fff;border-radius:var(--radius);padding:18px 14px;text-align:center;border:1px solid var(--line);margin-bottom:12px}
.q-src{font-size:11.5px;color:var(--sub)}
.q-word-row{display:flex;align-items:center;justify-content:center;gap:10px}
.q-word{font-size:34px;font-weight:800;word-break:break-word}
.q-word-ja{font-size:22px}
.q-ask{font-size:12.5px;color:var(--sub);margin-top:4px}
.choices{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.choices.n4{grid-template-columns:1fr}
.choice{border:2px solid var(--line);background:#fff;border-radius:12px;padding:12px 10px;font-size:15px;font-weight:700;cursor:pointer;text-align:left;min-height:52px;line-height:1.3;color:var(--ink)}
.choice.en{font-size:17px;letter-spacing:.02em}
.choice.ok{border-color:var(--ok);background:#dcfce7}
.choice.ng{border-color:var(--ng);background:#fee2e2}
.choice:disabled{cursor:default}
.feedback{margin-top:10px;font-weight:700;text-align:center;min-height:24px}
.feedback .fb-ok{color:var(--ok)}.feedback .fb-ng{color:var(--ng)}
.feedback .fb-sub{display:block;font-weight:400;font-size:12.5px;color:var(--sub);margin-top:4px}
/* 手書き */
.hw-wrap{background:#fff;border-radius:var(--radius);padding:10px;border:1px solid var(--line)}
.hw-canvas{width:100%;height:200px;background:#fffdf5;border:2px solid #fbbf24;border-radius:10px;touch-action:none;display:block;background-image:linear-gradient(#f3e8c7 1px,transparent 1px);background-size:100% 50px;background-position:0 25px}
.hw-tools{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.hw-type-row{display:flex;gap:6px;margin-top:8px}
.hw-type-row input{flex:1;font-size:18px;padding:8px 10px;border:1px solid var(--line);border-radius:10px}
.hw-answer{background:#fff;border-radius:var(--radius);padding:14px;border:2px solid var(--ok);margin-top:10px;text-align:center}
.hw-ans-label{font-size:12px;color:var(--sub)}
.hw-ans-word{font-size:32px;font-weight:800;letter-spacing:.04em}
.hw-ans-sub{font-size:12.5px;color:var(--sub);margin-bottom:8px}
.hw-judge{font-size:13px;font-weight:700}
.hw-judge .btn{display:inline-block;width:auto;padding:10px 16px;margin:6px 4px 0}
#btn-hw-show{margin-top:10px}
.hw-auto-res{font-size:16px;font-weight:800;margin-bottom:8px}.hw-auto-res.ok{color:var(--ok)}.hw-auto-res.ng{color:var(--ng)}
/* 単語カード */
.cards-list{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
.wcard{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;display:flex;align-items:center;gap:10px;cursor:pointer}
.wcard .w{font-size:20px;font-weight:800;flex:1;min-width:0}
.wcard .w small{font-size:11px;color:var(--sub);font-weight:400;margin-left:6px}
.wcard .m{flex:1.2;font-size:14px;color:var(--ink);filter:blur(6px);transition:filter .15s}
.wcard.open .m{filter:none}
.wcard .pos{font-size:10.5px;background:#f1f5f9;border-radius:6px;padding:1px 5px;color:var(--sub);margin-right:4px}
.wcard .st{font-size:14px;width:22px;text-align:center}
.wcard.b .w{color:#1d4ed8}
/* 結果 */
.result-head{text-align:center;padding:20px 0 10px}
.result-emoji{font-size:56px}
.result-score{font-size:48px;font-weight:800;color:var(--primary2)}
.result-denom{font-size:22px;color:var(--sub)}
.result-praise{font-size:20px;font-weight:800}
.result-msg{font-size:13.5px;color:var(--sub);margin-top:4px;white-space:pre-line}
.miss-list{display:flex;flex-direction:column;gap:6px}
.miss-item{display:flex;justify-content:space-between;gap:8px;font-size:14px;border-bottom:1px dashed var(--line);padding:4px 0}
.miss-item b{font-size:16px}
/* ランキング */
.rank-live{color:#ef4444;font-weight:800;font-size:12px}
.rank-note{font-size:12.5px;color:var(--sub);margin-bottom:8px}
.rank-list{display:flex;flex-direction:column;gap:6px}
.rank-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 12px;display:flex;align-items:center;gap:10px}
.rank-item.me{border-color:var(--primary);background:#eef2ff}
.rank-pos{font-weight:800;font-size:18px;min-width:34px}
.rank-nm{flex:1;min-width:0;font-weight:700}
.rank-nm small{display:block;font-size:11px;color:#6d28d9;font-weight:400}
.rank-gl{font-size:11px;color:var(--sub);margin-right:6px}
.rank-c{font-weight:800;color:#b45309}
.rank-p{font-size:12px;color:var(--sub)}
.live-dot{color:#ef4444;font-size:10px;margin-left:4px}
/* にがてボックス */
.box-list{display:flex;flex-direction:column;gap:6px}
.box-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 12px;display:flex;align-items:center;gap:10px}
.box-item b{font-size:18px;flex:1}
.box-item .m{font-size:13px;color:var(--sub);flex:1.3}
.box-item .str{font-size:11px;color:var(--fire);white-space:nowrap}
/* ガチャ・コレクション */
.gacha-card{background:linear-gradient(160deg,#fdf4ff,#ede9fe)}
.gacha-meter{margin:10px 0}
.gacha-meter-label{font-size:12px;color:var(--sub);margin-top:4px;text-align:right}
.col-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:8px}
.col-item{border:2px solid var(--line);border-radius:10px;padding:8px 4px;text-align:center;font-size:12px;font-weight:700;background:#fff;min-height:58px;display:flex;flex-direction:column;justify-content:center;cursor:pointer;line-height:1.25}
.col-item.locked{background:#f1f5f9;color:#cbd5e1;border-style:dashed;cursor:default}
.col-item .rar{display:block;font-size:10px;font-weight:800}
.col-item.eq{border-color:#7c3aed;background:#f5f3ff}
/* エフェクト */
.fx-toast{position:fixed;left:50%;top:14px;transform:translateX(-50%) translateY(-80px);background:#111827;color:#fff;padding:10px 16px;border-radius:999px;font-weight:700;font-size:14px;transition:transform .25s;z-index:50;box-shadow:0 6px 18px rgba(0,0,0,.25);white-space:nowrap}
.fx-toast.show{transform:translateX(-50%) translateY(0)}
.fx-modal{position:fixed;inset:0;background:rgba(17,24,39,.7);display:flex;align-items:center;justify-content:center;z-index:60;padding:20px}
.fx-inner{background:#fff;border-radius:20px;padding:26px 20px;text-align:center;max-width:340px;width:100%;animation:pop .35s cubic-bezier(.2,1.4,.4,1)}
@keyframes pop{from{transform:scale(.6);opacity:0}to{transform:none;opacity:1}}
.fx-ttl{font-weight:800;color:var(--sub);font-size:14px}
.fx-icon{font-size:64px;margin:6px 0}
.fx-name{font-size:24px;font-weight:800}
.fx-sub{font-size:13px;color:var(--sub);margin:4px 0 14px;white-space:pre-line}
.foot{text-align:center;font-size:11px;color:#9ca3af;margin-top:16px}
.kari{font-size:10px;color:var(--sub)}