:root{--bg: #f8f6fb;--surface: #ffffff;--surface-elevated: #f3ecf8;--border: #e2d9ec;--border-focus: #6b009c;--text: #191224;--text-muted: #5e5270;--accent: #6b009c;--accent-hover: #53007a;--accent-subtle: #f3e8f8;--highlight: #f4ebfc;--highlight-border: #6b009c;--danger: #dc2626;--success: #16a34a;--font-jp: "Zen Kaku Gothic New", -apple-system, sans-serif;--font-ui: "Inter", -apple-system, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100vh;background-color:var(--bg);color:var(--text);font-family:var(--font-ui);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{display:flex;flex-direction:column}.icon{width:18px;height:18px;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;fill:none;vertical-align:middle;display:inline-block;flex-shrink:0}.btn-secondary{background:var(--surface);border:1px solid var(--border);color:var(--text);padding:8px 14px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:8px;text-decoration:none;transition:background .15s ease,border-color .15s ease,color .15s ease}.btn-secondary:hover{background:var(--surface-elevated);border-color:var(--accent);color:var(--accent)}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%{opacity:1}to{opacity:.4}}.cloze-blank{background:#f0e6f7;border:1px dashed var(--accent);border-radius:4px;color:transparent!important;padding:0 8px;-webkit-user-select:none;user-select:none;display:inline-block}.hidden-text{background:#ebe0f2;color:transparent!important;border-radius:4px;-webkit-user-select:none;user-select:none;display:inline-block;padding:0 8px;transition:all .2s ease}.hidden-text:hover{color:var(--text)!important;background:var(--surface-elevated)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:#d8cce4;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent)}