:root{--ink:#203237;--muted:#5f6f73;--accent:#284e55;--paper:#f6f8f8;--line:#d8e0e2;--soft:#edf2f2;--answer-size:19px;--answer-font:"Hiragino Mincho ProN","YuMincho","Yu Mincho",serif;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif;color:var(--ink);background:var(--paper)}
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env(safe-area-inset-bottom));overflow-wrap:anywhere;min-height:70vh}.bottom-nav{position:fixed;z-index:20;bottom:0;left:0;right:0;background:#fffffff5;border-top:1px solid var(--line);display:flex;justify-content:center;padding:8px max(10px,env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(10px,env(safe-area-inset-left));gap:4px}.bottom-nav button{max-width:170px;flex:1;border:0;background:transparent;font-size:13px;padding:10px 5px;border-radius:8px;min-height:45px}.bottom-nav button[aria-current=page]{background:var(--soft);color:var(--accent)}.panel{background:#fff;border:1px solid var(--line);border-radius:13px;padding:18px;margin-bottom:16px}.panel.compact{padding:14px}.deck-name{font-size:18px;line-height:1.6;font-weight:650}.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:650;margin-bottom:8px}.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.stat{border-radius:10px;background:var(--soft);padding:12px 15px}.stat strong{font-size:30px;display:block;line-height:1.2;color:var(--accent)}.stat span{font-size:14px}.stat.due{background:#e3ecec}.status-line{border-left:3px solid var(--accent);padding-left:10px;font-size:13px;line-height:1.6;color:var(--muted);margin:12px 0}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.row>*{min-width:0}.row.spread{justify-content:space-between}.stack{display:grid;gap:10px}.modes{display:grid;gap:10px}.mode-button{text-align:left;padding:16px}.mode-button strong{display:block;font-size:18px}.mode-button span{display:block;margin-top:4px;font-size:13px;font-weight:400;opacity:.9}.field{margin:18px 0}.check{display:flex;align-items:flex-start;gap:10px;font-size:15px;font-weight:400}.check input{margin-top:2px}.chip{display:inline-block;font-size:12px;padding:3px 9px;border-radius:6px;background:var(--soft);color:var(--accent)}.study-meta{font-size:13px;color:var(--muted);margin-bottom:12px;line-height:1.6}.study-title{font-size:20px;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:20px;line-height:1.55}.theme-name{font-size:13px;color:var(--muted);margin:12px 0}.content-label{font-size:12px;letter-spacing:.06em;color:var(--accent);font-weight:750;margin:18px 0 6px}.condition{line-height:1.8;font-size:16px;white-space:pre-wrap}.question{font-size:18px;font-weight:600;line-height:1.85;white-space:pre-wrap;margin-bottom:20px}.study-top{border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:16px}.answer{font-family:var(--answer-font);font-size:var(--answer-size);line-height:1.95;padding:4px 0 4px 16px;border-left:3px solid var(--accent);margin:12px 0 20px;white-space:normal}.answer p{white-space:pre-wrap;margin:0 0 1.2em}.answer p:last-child{margin-bottom:0}.reveal-controls{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 12px}.rating-controls{display:grid;gap:9px;margin-top:18px}.rating-controls button{padding:13px;text-align:left;display:flex;justify-content:space-between;gap:10px}.rating-controls span{font-size:13px;font-weight:400;align-self:center}.rating-controls .good{background:var(--accent);color:#fff;border-color:var(--accent)}.self-note{font-size:12px;color:var(--muted);margin:12px 0}.study-end{border-top:1px solid var(--line);padding-top:14px;display:grid;gap:10px;margin-top:22px}.saved-rating{background:var(--soft);padding:13px;border-radius:9px;margin-top:16px;font-size:15px}.progress-track{height:4px;background:var(--line);border-radius:2px;margin-bottom:15px}.progress-track>div{height:4px;background:var(--accent);border-radius:2px}.list-item{background:white;padding:16px;border:1px solid var(--line);border-radius:11px;margin:10px 0}.list-item h3{font-size:16px;margin:8px 0}.list-meta{font-size:12px;color:var(--muted)}.list-actions{display:flex;gap:8px;flex-wrap:wrap}.list-actions button{font-size:14px}.answer-total{font-size:13px;color:var(--muted);margin:8px 0}.empty{padding:20px 0;color:var(--muted)}.error-banner,.update-banner{max-width:740px;margin:12px auto;padding:13px 18px;background:#fff0eb;border:1px solid #e1c0b6;line-height:1.65;overflow-wrap:anywhere}.update-banner{background:#edf3f3;border-color:var(--line)}.error-banner button,.update-banner button{margin:8px 8px 0 0}.toast{position:fixed;z-index:35;bottom:calc(85px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);background:#263a3eee;color:white;border-radius:9px;padding:10px 15px;font-size:14px;width:max-content;max-width:90vw;pointer-events:none}.loading{padding:25px}.import-summary{line-height:1.8}.preview-box{border:1px solid var(--line);border-radius:10px;padding:16px;background:var(--soft);margin:16px 0}details{padding:8px 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@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.bottom-nav,.app-header{display:none}main{padding:0}.answer{font-size:18px}}