:root{--kv-washi-paper:#f6f4eb;--kv-ai-iro:#165e83;--kv-kurenai:#cb1b45;--kv-matcha-green:#b8d200;--kv-kintsugi-gold:#d4af37;--duo-green:var(--kv-matcha-green);--duo-green-dark:#91a600;--duo-blue:var(--kv-ai-iro);--duo-blue-dark:#0e3e56;--duo-orange:#ff9600;--duo-orange-dark:#cc7800;--duo-red:var(--kv-kurenai);--duo-red-dark:#9a1434;--duo-purple:#ce82ff;--duo-yellow:var(--kv-kintsugi-gold);--text-main:#4b4b4b;--text-secondary:#777;--bg-main:var(--kv-washi-paper);--bg-soft:#fff;--border-light:#e5e5e5;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--shadow-sm:0 2px 0 var(--border-light);--shadow-md:0 4px 0 var(--border-light);--safe-area-inset-bottom:env(safe-area-inset-bottom)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body{max-width:100vw;color:var(--text-main);background-color:var(--bg-main);font-family:Shippori Mincho,Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI 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#cc9c00}.unit-button.available{cursor:pointer;opacity:.9}.start-indicator{background-color:var(--kv-kurenai);color:#fff;white-space:nowrap;border-radius:12px;padding:8px 16px;font-size:14px;font-weight:800;position:absolute;top:-45px;left:50%;transform:translate(-50%);box-shadow:0 4px 10px #0000001a}.start-indicator:after{content:"";border-left:8px solid #0000;border-right:8px solid #0000;border-top:8px solid var(--kv-kurenai);width:0;height:0;margin-left:-8px;position:absolute;bottom:-8px;left:50%}.unit-label-card{text-align:center;background-color:#fff;border-radius:16px;min-width:110px;margin-top:16px;padding:6px 14px}.aura-link{color:var(--text-secondary);opacity:.7;cursor:pointer;align-items:center;transition:opacity .2s;display:flex}.aura-link:hover{opacity:1}.rank-text{width:30px;color:var(--text-secondary);font-size:18px;font-weight:900}.leader-item-name{color:var(--text-main);flex:1;font-weight:700}.leader-item-xp{color:var(--kv-kurenai);font-weight:900}.text-duo-green{color:var(--duo-green)}.text-duo-green-dark{color:var(--duo-green-dark)}.text-duo-blue{color:var(--duo-blue)}.text-duo-orange{color:var(--duo-orange)}.score-text{color:var(--duo-blue);font-size:48px;font-weight:900}.pass-message{color:var(--duo-orange);margin-top:8px;font-size:18px;font-weight:700}.progress-bar-track{background-color:var(--border-light);border-radius:12px;height:16px;overflow:hidden}.quiz-close-button{width:44px;min-width:44px;height:44px;color:var(--text-secondary);cursor:pointer;z-index:2;touch-action:manipulation;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:12px;justify-content:center;align-items:center;padding:0;display:inline-flex;position:relative}.quiz-close-button:active{background:#0000000d}.progress-bar-fill{background-color:var(--duo-green);height:100%;transition:width .3s}.feedback-correct{color:var(--duo-green-dark);margin:0}.feedback-incorrect{color:var(--kv-kurenai);margin:0}.correct-solution{color:var(--kv-kurenai);margin:4px 0 0;font-size:18px;font-weight:700}.min-h-60{min-height:60vh}.gap-16{gap:16px}.font-64{font-size:64px}.button-standard{width:auto;padding:10px 24px}.review-card-modern{background:linear-gradient(145deg,#fff 0%,#fff5f5 100%);border:2px solid #ffe4e6;border-radius:24px;margin-bottom:32px;padding:32px;position:relative;overflow:hidden;box-shadow:0 12px 24px -6px #dc262626,0 4px 8px -4px #dc26261a}.review-card-modern:before{content:"";opacity:.5;pointer-events:none;background:radial-gradient(circle at 100% 0,#fee2e2 0%,#0000 70%);width:150px;height:150px;position:absolute;top:0;right:0}.review-header{align-items:center;gap:12px;margin-bottom:24px;display:flex}.review-header-icon{color:#dc2626;background-color:#fee2e2;border-radius:14px;justify-content:center;align-items:center;width:48px;height:48px;font-size:24px;display:flex}.stat-container{flex-direction:column;gap:4px;margin-bottom:32px;display:flex}.stat-value{color:var(--es-red);letter-spacing:-1px;font-size:56px;font-weight:900;line-height:1}.stat-label{color:var(--text-secondary);font-size:18px;font-weight:700}.review-actions{align-items:center;gap:16px;display:flex}.button-review-pulse{animation:2s infinite subtle-pulse}@keyframes subtle-pulse{0%{box-shadow:0 4px 0 var(--duo-red-dark)}50%{box-shadow:0 4px 12px #c60b1e66}to{box-shadow:0 4px 0 var(--duo-red-dark)}}.px-20{padding-left:20px;padding-right:20px}.m-0{margin:0}.no-underline{text-decoration:none}.profile-container{max-width:600px;margin:0 auto;padding:20px}.avatar-container{background-color:#f0f0f0;border:4px solid #fff;border-radius:50%;width:100px;height:100px;margin:0 auto 16px;position:relative;overflow:hidden;box-shadow:0 4px 15px #0000001a}.profile-admin-badge{color:#fff;letter-spacing:.08em;background:linear-gradient(135deg,#cb1b45,#e85d75);border:3px solid #fff;border-radius:999px;justify-content:center;align-items:center;min-width:58px;height:28px;padding:0 12px;font-size:11px;font-weight:900;display:inline-flex;position:absolute;bottom:0;right:-4px;box-shadow:0 6px 14px #cb1b4547}.profile-xp-title-wrap{justify-content:center;display:flex}.profile-xp-title-pill{color:#6d4c00;background:linear-gradient(135deg,#fffaf0,#fff2d9);border:2px solid #f3d9a2;border-radius:999px;align-items:center;gap:8px;min-height:38px;padding:8px 14px;display:inline-flex;box-shadow:0 6px 16px #d4af3729}.profile-xp-title-accent{background:var(--kv-kurenai);color:#fff;letter-spacing:.08em;border-radius:999px;justify-content:center;align-items:center;height:22px;padding:0 8px;font-size:10px;font-weight:900;display:inline-flex}.profile-xp-title-main{color:#5e4a19;font-size:15px;font-weight:800;line-height:1}.profile-xp-title-flag{font-size:15px;line-height:1}.stat-grid{grid-template-columns:1fr 1fr;gap:12px;margin:24px 0;display:grid}.badge-outline{text-align:center;border-radius:16px;border:2px solid var(--border-light)!important;background:#fff!important;padding:12px!important}.review-content{max-width:600px;margin:0 auto;padding:20px}.review-card{border:2px solid var(--border-light);background:#fff;border-radius:20px;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;padding:16px;display:flex}.mistake-list{flex-direction:column;gap:12px;display:flex}.mistake-item{border:2px solid var(--border-light);background:#fff;border-radius:16px;justify-content:space-between;align-items:center;padding:16px;transition:transform .2s;display:flex}.mistake-item:active{transform:scale(.98)}.mistake-count{color:var(--kv-kurenai);background:#fff5f5;border:1px solid #ffe3e3;border-radius:12px;padding:4px 12px;font-size:13px;font-weight:800}.trash-button{color:#afafaf;cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:8px;transition:all .2s;display:flex}.trash-button:hover{color:var(--kv-kurenai);background:#fff5f5}.bg-google{color:#3c4043!important;background-color:#fff!important;border:2px solid #dadce0!important}.bg-google:hover{background-color:#f8f9fa!important}.bg-dev{background-color:#f8fafc}.border-dev{border:2px dashed #cbd5e1}.select-standard{border:2px solid var(--border-light);color:var(--text-main);border-radius:8px;padding:8px;font-family:inherit;font-weight:700}.profile-stat-card{border:2px solid var(--border-light);box-shadow:0 4px 0 var(--border-light);background:#fff;border-radius:20px;flex-direction:column;align-items:center;gap:8px;padding:16px;display:flex}.settings-section{text-align:left;margin-top:32px}.settings-item{border:2px solid var(--border-light);background:#fff;border-radius:16px;justify-content:space-between;align-items:center;margin-bottom:12px;padding:16px;display:flex}.toggle-switch{flex-shrink:0;width:48px;height:24px;display:inline-block;position:relative}.toggle-switch input{opacity:0;width:0;height:0}.slider{cursor:pointer;background-color:#ccc;border-radius:24px;transition:all .4s;position:absolute;inset:0}.slider:before{content:"";background-color:#fff;border-radius:50%;width:18px;height:18px;transition:all .4s;position:absolute;bottom:3px;left:3px}input:checked+.slider{background-color:var(--duo-green)}input:checked+.slider:before{transform:translate(24px)}.unit-button.beginner{background-color:var(--kv-kurenai);box-shadow:0 6px 0 var(--duo-red-dark)}.unit-button.intermediate{background-color:#3b82f6;box-shadow:0 6px #2563eb}.unit-button.advanced{background-color:var(--kv-kintsugi-gold);box-shadow:0 6px #d97706}.unit-button.mastered{animation:2s infinite alternate gold-glow;background-color:gold!important;border:4px solid #fff!important;box-shadow:0 6px #b8860b!important}@keyframes gold-glow{0%{box-shadow:0 6px #b8860b,0 0 10px #ffd70080}to{box-shadow:0 6px #b8860b,0 0 25px #ffd700e6}}.fail-badge-dual{z-index:10;justify-content:center;align-items:center;width:44px;height:44px;display:flex;position:absolute;top:-12px;right:-12px}.fail-badge-circle{background-color:var(--kv-kurenai);border:3px solid #fff;border-radius:50%;width:32px;height:32px;position:absolute;box-shadow:0 4px 8px #dc262666}.fail-badge-count{z-index:1;color:#fff;font-size:14px;font-weight:900;line-height:1;position:relative}.unit-label-card.tier-beginner{border-color:var(--kv-kurenai)}.unit-label-card.tier-intermediate{border-color:#3b82f6}.unit-label-card.tier-advanced{border-color:var(--kv-kintsugi-gold)}.jlpt-badge-quiz{background:var(--kv-kintsugi-gold);color:#fff;z-index:10;border:2px solid #ffffff4d;border-radius:20px;padding:4px 12px;font-size:14px;font-weight:900;position:absolute;top:16px;right:16px;box-shadow:0 4px #0000001a}.jlpt-badge-quiz.smaller{padding:2px 8px;font-size:11px;top:12px;right:12px}.japanese-header{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:2px solid var(--border-glass);background:#f6f4ebf2}@media (max-width:600px){.offline-banner{border-radius:20px;flex-direction:column;width:calc(100vw - 16px);padding:10px 12px;font-size:12px;line-height:1.4;top:8px}.offline-title{font-size:24px}}