:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}*{box-sizing:border-box;margin:0;padding:0}body{color:#eee;background:#1a1a2e;justify-content:center;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex}#root{width:100%;max-width:480px;padding:20px 16px}.app-container{flex-direction:column;align-items:center;display:flex}.title{text-align:center;color:#e94560;margin-bottom:4px;font-size:22px}.subtitle{color:#888;text-align:center;margin-bottom:14px;font-size:13px}.stats-bar{background:#16213e;border:1px solid #0f3460;border-radius:14px;justify-content:space-between;width:100%;margin-bottom:14px;padding:10px 16px;font-size:13px;display:flex}.stat-item{align-items:center;gap:5px;display:flex}.stat-dot{border-radius:50%;width:8px;height:8px}.stat-dot.total{background:#555}.stat-dot.remembered{background:#2ecc71}.stat-dot.forgot{background:#e74c3c}.card-wrapper{perspective:1000px;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;outline:none;width:100%;min-height:310px}.word{color:#fff;margin-bottom:10px;font-size:36px;font-weight:700}.ipa{color:#e94560;margin-bottom:8px;font-family:Times New Roman,serif;font-size:18px}.guide{color:#aaa;letter-spacing:1px;font-size:20px}.vn{color:#fff;margin-bottom:6px;font-size:28px;font-weight:600}.vn-desc{color:#999;margin-bottom:18px;font-size:14px}.action-buttons{gap:12px;width:100%;max-width:300px;margin-top:auto;margin-bottom:20px;display:flex}.action-btn{cursor:pointer;-webkit-tap-highlight-color:transparent;border:none;border-radius:14px;flex:1;padding:14px 10px;font-size:15px;font-weight:700;transition:all .2s}.action-btn:active{transform:scale(.94)}.remember-btn{color:#fff;background:#2ecc71}.forget-btn{color:#fff;background:#e74c3c}.counter{color:#666;text-align:center;margin:14px 0 6px;font-size:14px}.progress-bar{background:#333;border-radius:2px;width:100%;height:4px;overflow:hidden}.progress-fill{background:#e94560;border-radius:2px;height:100%;transition:width .3s}.nav-buttons{gap:10px;width:100%;margin-top:14px;display:flex}.nav-btn{cursor:pointer;-webkit-tap-highlight-color:transparent;text-align:center;border:none;border-radius:14px;padding:13px 8px;font-size:15px;font-weight:600;transition:all .2s}.nav-btn:active{transform:scale(.96)}.nav-btn:disabled{opacity:.3;pointer-events:none}.prev-btn{color:#eee;background:#333;flex:1}.next-btn{color:#fff;background:#e94560;flex:1}.shuffle-btn{color:#eee;background:#0f3460;flex:.5}.reset-btn{color:#555;background:0 0;flex:.4;font-size:13px}.tap-hint{color:#555;text-align:center;margin-top:12px;font-size:12px}@media (width<=400px){.word{font-size:30px}.vn{font-size:24px}.card-wrapper,.card-wrapper>div{min-height:270px}}