@import url(https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;600;700&family=Nunito:wght@400;600;700&display=swap);body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}:root{--bg-color:#fafaf5;--card-bg:#fff;--primary-color:#557c55;--primary-light:#e8f5e9;--accent-color:#d4a373;--text-main:#4a4a4a;--text-heading:#2c3e50;--shadow-soft:0 8px 24px #557c5514;--shadow-hover:0 12px 32px #557c5526;--border-radius:24px}body{background-color:#fafaf5;background-color:var(--bg-color);background-image:radial-gradient(#e0e0e0 1px,#0000 0);background-size:24px 24px;color:#4a4a4a;color:var(--text-main);font-family:Nunito,sans-serif}h1,h2,h3,h4,h5{color:#2c3e50!important;color:var(--text-heading)!important;font-family:"Noto Serif JP",serif!important}.app-container{margin:0 auto;max-width:900px;min-height:100vh;padding:40px 20px}.section-header{margin-bottom:48px;text-align:center}.section-header .ant-typography-secondary{color:#888;font-size:1.1rem;font-weight:400}.study-card{background:#fff;background:var(--card-bg);border:none!important;border-radius:24px!important;border-radius:var(--border-radius)!important;box-shadow:0 8px 24px #557c5514!important;box-shadow:var(--shadow-soft)!important;height:100%;overflow:hidden;transition:all .3s ease!important}.study-card:hover{box-shadow:0 12px 32px #557c5526!important;box-shadow:var(--shadow-hover)!important;transform:translateY(-5px)}.study-card .ant-card-head{border-bottom:1px dashed #e0e0e0;font-family:"Noto Serif JP",serif;font-weight:600}.category-card{padding:20px 0;text-align:center}.category-icon-wrapper{background:#e8f5e9;background:var(--primary-light);border-radius:50%;color:#557c55;color:var(--primary-color);font-size:32px;height:80px;line-height:80px;margin:0 auto 16px;width:80px}.dialogue-bubble{border-radius:18px;box-shadow:0 2px 8px #00000008;min-width:200px;padding:16px 20px;position:relative}.bubble-a{background:#fff;border:1px solid #e6e6e6;border-bottom-left-radius:4px}.bubble-b{background:#e8f5e9;background:var(--primary-light);border:1px solid #0000;border-bottom-right-radius:4px}.japanese-text{color:#2c3e50;color:var(--text-heading);font-family:"Noto Serif JP",serif;font-size:1.1rem;font-weight:700;margin-bottom:4px}.romaji-text{color:#8fa3ad;font-family:Nunito,sans-serif;font-size:.9rem;font-style:italic}.vietnamese-text{border-top:1px dashed #ddd;color:#555;font-size:1rem;margin-top:6px;padding-top:6px}.ant-btn-primary{background-color:#557c55!important;background-color:var(--primary-color)!important;border-color:#557c55!important;border-color:var(--primary-color)!important;box-shadow:0 4px 10px #557c554d;font-weight:600}.ant-tabs-tab{font-family:"Noto Serif JP",serif;font-size:1.1rem;padding:12px 24px!important}.ant-tabs-tab-active .ant-tabs-tab-btn{color:#557c55!important;color:var(--primary-color)!important}.ant-breadcrumb a{color:#888!important;transition:color .3s}.ant-breadcrumb a:hover{color:#557c55!important;color:var(--primary-color)!important}.ant-card-actions{display:flex;justify-content:center}.ant-card-actions li{width:-webkit-fit-content!important;width:fit-content!important}
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