: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%}.loader-container{flex-direction:column;align-items:center;gap:1rem;padding:3rem;display:flex}.loader-spinner{border:3px solid #eeedfe;border-top-color:#4a2fa0;border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loader-message{color:#7f77dd;font-size:14px}.dictionary-container{width:100%}.dictionary-title{color:var(--color-deep-night);margin-bottom:2rem;font-size:22px;font-weight:500}.dictionary-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin:0;padding:0;list-style:none;display:grid}.hanja-card{background:#fff;border:.5px solid #d3d1c7;border-radius:12px;flex-direction:column;padding:1.5rem;transition:transform .2s,box-shadow .2s;display:flex}.hanja-card-footer{align-items:center;margin-top:auto;padding-top:1rem;display:flex}.character-badge{background:var(--color-abyss);color:var(--color-mist);border-radius:8px;justify-content:center;align-items:center;width:56px;height:56px;margin-bottom:1rem;font-size:28px;display:flex}.hanja-info{margin-bottom:1.25rem}.hanja-reading{color:var(--color-ink);margin:0 0 2px;font-size:16px;font-weight:500}.hanja-translation{color:var(--color-stone);margin:0;font-size:13px}.btn-add{background:var(--color-jade);color:#fff;cursor:pointer;border:none;border-radius:8px;align-self:flex-start;margin-top:auto;padding:10px 20px;font-size:14px;font-weight:500;transition:background .2s}.btn-added{color:#e1f5ee;cursor:default;opacity:.85;background-color:#1d9e75;border:none;border-radius:8px;width:fit-content;padding:6px 12px;font-size:13px;font-weight:500}.btn-add:hover{background:#158a65}.filter-bar{box-sizing:border-box;gap:12px;width:100%;margin-bottom:2.5rem;display:flex}.search-input{min-width:0;color:var(--color-ink);cursor:text;box-sizing:border-box;background:#fff;border:1px solid #d3d1c7;border-radius:8px;flex:1;padding:12px 16px;font-family:inherit;font-size:14px}.grade-select{color:var(--color-ink);cursor:pointer;background:#fff;border:1px solid #d3d1c7;border-radius:8px;flex:1;padding:12px}.status-message{z-index:1000;white-space:nowrap;border-radius:8px;padding:12px 24px;font-size:14px;font-weight:500;animation:.2s slideUp;position:fixed;bottom:1.5rem;left:50%;transform:translate(-50%);box-shadow:0 4px 16px #0000001f}@keyframes slideUp{0%{opacity:0;transform:translate(-50%)translateY(10px)}to{opacity:1;transform:translate(-50%)translateY(0)}}.status-success{color:#0f6e56;background:#e1f5ee}.status-error{color:#993c1d;background:#faece7}.grade-actions-row{justify-content:space-between;align-items:center;gap:16px;margin-bottom:2rem;display:flex}.grade-tabs{flex-wrap:wrap;gap:12px;margin-bottom:0;display:flex}.btn-add-all{color:#4a2fa0;cursor:pointer;white-space:nowrap;background:0 0;border:1.5px solid #4a2fa0;border-radius:8px;padding:8px 18px;font-size:13px;font-weight:500;transition:all .2s}.btn-add-all:hover{background:#eeedfe;transform:translateY(-1px)}btn-add-all:active{transform:translateY(0)}@media (width<=600px){.grade-actions-row{flex-direction:column}.btn-add-all{width:100%}}.grade-tab{color:#4a2fa0;cursor:pointer;background:0 0;border:1.5px solid #cecbf6;border-radius:20px;padding:6px 14px;font-size:13px;font-weight:500;transition:background .15s,color .15s}.grade-tab:hover{background:#eeedfe}.grade-tab.active{color:#fff;background:#4a2fa0;border-color:#4a2fa0}.search-bar{box-sizing:border-box;gap:8px;width:100%;margin-bottom:1.5rem;display:flex}.btn-search{color:#fff;cursor:pointer;background:#4a2fa0;border:1px solid #d3d1c7;border-radius:8px;padding:10px 16px;font-size:15px}.btn-clear{color:#5f5e5a;cursor:pointer;background:#fff;border:1px solid #d3d1c7;border-radius:8px;padding:10px 12px;font-size:13px}.search-result-count{color:var(--color-stone);margin-bottom:1rem;font-size:13px}.mastery-container{width:100%;max-width:800px;margin:0 auto}.mastery-header{border-bottom:2px solid var(--color-mist);justify-content:space-between;align-items:center;margin-bottom:2.5rem;padding-bottom:1rem;display:flex}.mastery-header h2{color:var(--color-deep-night);margin:0;font-size:24px;font-weight:500}.mastery-grade-section{margin-bottom:3rem}.grade-header-text{color:var(--color-deep-night);border-bottom:1px solid var(--color-mist);margin-bottom:1.5rem;padding-bottom:.5rem;font-size:18px;font-weight:500}.mastery-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.mastery-item{background:#fff;border:.5px solid #d3d1c7;border-radius:12px;align-items:center;gap:1.5rem;padding:1rem 1.5rem;display:flex;box-shadow:0 2px 4px #00000005}.mastery-char{color:var(--color-primary);text-align:center;min-width:44px;font-size:24px;font-weight:700}.mastery-info{flex-grow:1}.mastery-reading{color:var(--color-ink);margin:0 0 2px;font-size:16px;font-weight:500}.mastery-translation{color:var(--color-stone);margin:0;font-size:13px}.next-review-date{color:var(--color-stone);margin-top:4px;font-size:11px;font-style:italic}.btn-remove{color:var(--color-error);border:1px solid var(--color-error);cursor:pointer;background:0 0;border-radius:8px;flex-shrink:0;padding:6px 14px;font-size:13px;font-weight:500;transition:all .2s}.btn-remove:hover{background:var(--color-error);color:#fff}.status-pill{background:var(--color-frost);color:var(--color-primary);border-radius:20px;padding:4px 12px;font-size:11px;font-weight:500}.empty-message{color:var(--color-stone);text-align:center;margin-top:3rem;font-size:16px}.mastery-levels{flex-wrap:wrap;gap:.5rem;margin-top:.25rem;display:flex}.mastery-badge{color:#4a2fa0;background:#f0eeff;border-radius:999px;padding:.1rem .5rem;font-size:.75rem}:root{--color-primary:#4a2fa0;--color-deep-night:#1a0c52;--color-abyss:#26215c;--color-mist:#cecbf6;--color-frost:#eeedfe;--color-jade:#1d9e75;--color-parchment:#f1efe8;--color-ink:#2c2c2a;--color-stone:#5f5e5a;--color-error:#d85a30}body{background-color:var(--color-parchment);color:var(--color-ink);margin:0;font-family:Inter,sans-serif}.app-wrapper{flex-direction:column;width:100%;min-height:100vh;display:flex}.nav{background-color:var(--color-deep-night);align-items:center;gap:2rem;padding:1rem 2rem;display:flex;box-shadow:0 2px 10px #0000001a}.nav a{color:var(--color-mist);font-size:14px;font-weight:500;text-decoration:none;transition:color .2s}.nav a:hover{color:#fff}.container{box-sizing:border-box;flex-grow:1;width:100%;max-width:1200px;margin:0 auto;padding:2.5rem}.nav-logout{border:1px solid var(--color-mist);color:var(--color-mist);cursor:pointer;background:0 0;border-radius:20px;margin-left:auto;padding:6px 14px;font-size:13px}.welcome-hero{text-align:center;margin-top:4rem}.welcome-hero h1{color:var(--color-deep-night);margin-bottom:5rem;font-size:32px;font-weight:500}.welcome-hero p{color:var(--color-stone);font-size:16px;line-height:1.7}.display-glyph{color:var(--color-primary);margin:2rem 0;font-size:80px;display:block}.study-hub{max-width:800px}.study-hub-title{color:var(--color-deep-night);margin-bottom:.5rem;font-size:22px;font-weight:500}.study-hub-subtitle{color:var(--color-stone);margin-bottom:2.5rem;font-size:14px}.game-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.5rem;display:grid}.game-card{cursor:pointer;background:#fff;border:.5px solid #d3d1c7;border-radius:12px;padding:1.75rem;transition:transform .2s,box-shadow .2s;position:relative}.game-card:hover:not(.game-card--disabled){transform:translateY(-4px);box-shadow:0 4px 20px #4a2fa01a}.game-card--disabled{opacity:.5;cursor:default}.game-icon{margin-bottom:1rem;font-size:32px;display:block}.game-title{color:var(--color-ink);margin:0 0 .5rem;font-size:16px;font-weight:500}.game-description{color:var(--color-stone);margin:0;font-size:13px;line-height:1.5}.game-badge{color:#4a2fa0;background:#eeedfe;border-radius:20px;padding:3px 8px;font-size:11px;font-weight:500;position:absolute;top:1rem;right:1rem}.due-badge{color:#3c3489;background:#eeedfe;border-radius:20px;padding:3px 8px;font-size:11px;font-weight:500;position:absolute;bottom:1rem;right:1rem}.due-badge--done{color:#0f6e56;background:#e1f5ee}.settings-container{justify-content:center;margin-top:2.5rem;display:flex}.study-settings{background:#e1f5ee;border:.5px solid #9fe1cb;border-radius:12px;width:100%;max-width:560px;padding:1.5rem}.study-settings .settings-icon{background:#9fe1cb}.study-settings .settings-title{color:#085041}.study-settings .settings-desc{color:#0f6e56}.study-settings .settings-divider{border-top-color:#9fe1cb}.study-settings .settings-label{color:#085041}.study-settings .settings-sublabel{color:#0f6e56}.study-settings .limit-input{color:#085041;background:#fff;border-color:#9fe1cb}.study-settings .limit-input:focus{border-color:#1d9e75;box-shadow:0 0 0 3px #9fe1cb}.study-settings .info-pill{color:#085041;background:#9fe1cb}.settings-head{align-items:center;gap:10px;margin-bottom:6px;display:flex}.settings-icon{background:#eeedfe;border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;font-size:18px;display:flex}.settings-title{margin:0;font-size:16px;font-weight:500}.settings-desc{color:var(--color-text-secondary);margin:0 0 1.25rem;padding-left:46px;font-size:13px;line-height:1.6}.settings-divider{border:none;border-top:.5px solid var(--color-border-tertiary);margin:0 0 1.25rem}.settings-row{align-items:center;gap:12px;display:flex}.settings-label-group{flex:1}.settings-label{color:var(--color-text-primary);font-size:14px;display:block}.settings-sublabel{color:var(--color-text-secondary);margin-top:2px;font-size:12px;display:block}.settings-loading{color:var(--color-text-secondary);font-size:13px}.limit-input{border:.5px solid var(--color-border-secondary);text-align:center;background:var(--color-background-primary);width:72px;color:var(--color-text-primary);border-radius:8px;padding:7px 10px;font-size:15px;font-weight:500}.limit-input:focus{border-color:#7f77dd;outline:none;box-shadow:0 0 0 3px #eeedfe}.btn-save{color:#eae6fc;cursor:pointer;white-space:nowrap;background:#4a2fa0;border:none;border-radius:8px;padding:8px 18px;font-size:14px;font-weight:500;transition:background .15s}.btn-save:hover{background:#3c3489}.btn-save.saved{color:#e1f5ee;background:#1d9e75}.info-pill{color:#3c3489;background:#eeedfe;border-radius:20px;align-items:center;gap:5px;margin-top:1rem;padding:3px 10px;font-size:12px;font-weight:500;display:inline-flex}.meaning-input-container{flex-direction:column;align-items:center;gap:2rem;max-width:600px;margin:0 auto;display:flex}.session-stats{color:var(--color-stone);gap:1.5rem;font-size:14px;font-weight:500;display:flex}.flash-card{background:#fff;border:.5px solid #d3d1c7;border-radius:16px;flex-direction:column;align-items:center;gap:1rem;width:100%;padding:3rem;display:flex;box-shadow:0 4px 24px #4a2fa012}.flash-character{color:var(--color-deep-night);font-size:96px;line-height:1}.flash-hint{color:var(--color-stone);font-size:18px;font-weight:500}.answer-row{gap:8px;width:100%;display:flex}.answer-input{box-sizing:border-box;border:1px solid #d3d1c7;border-radius:8px;flex:1;min-width:0;padding:12px 16px;font-family:inherit;font-size:16px}.answer-input:focus{border-color:#4a2fa0;outline:none;box-shadow:0 0 0 3px #4a2fa01a}.btn-submit{color:#fff;cursor:pointer;white-space:nowrap;background:#4a2fa0;border:none;border-radius:8px;padding:12px 24px;font-size:15px;font-weight:500}.btn-next{color:#fff;cursor:pointer;white-space:nowrap;background:#1d9e75;border:none;border-radius:8px;padding:12px 24px;font-size:15px;font-weight:500}.feedback-area{justify-content:center;align-items:center;width:100%;height:50px;display:flex}.result-feedback{text-align:center;border-radius:8px;width:100%;padding:12px 16px;font-size:14px;font-weight:500}.result-correct{color:#0f6e56;background:#e1f5ee}.result-wrong{color:#993c1d;background:#faece7}.study-done,.study-empty{text-align:center;color:#4a2fa0;padding:4rem}.btn-restart{color:#fff;cursor:pointer;background:#4a2fa0;border:none;border-radius:8px;margin-top:1.5rem;padding:12px 28px;font-size:15px;font-weight:500}.writing-prompt-row{flex-wrap:wrap;justify-content:center;align-items:center;gap:2rem;display:flex}.writing-prompt-item{text-align:center}.writing-prompt-label{letter-spacing:.08em;text-transform:uppercase;color:var(--color-stone);margin-bottom:4px;font-size:11px;font-weight:500;display:block}.writing-prompt-value{color:var(--color-deep-night);font-size:22px;font-weight:500}.writing-prompt-value.writing-prompt-sound{color:#3c3489;font-size:18px}.writing-prompt-divider{background:#d3d1c7;width:1px;height:48px}.stroke-indicators{flex-wrap:wrap;justify-content:center;gap:6px;display:flex}.stroke-dot{background:#cecbf6;border-radius:50%;width:10px;height:10px;transition:background .2s}.stroke-dot--done{background:#4a2fa0}.stroke-dot--current{background:#7f77dd;box-shadow:0 0 0 3px #eeedfe}.hanzi-canvas{width:280px;height:280px}.writing-unsupported{text-align:center;flex-direction:column;align-items:center;gap:.75rem;padding:2rem 1rem;display:flex}.writing-unsupported-char{color:var(--color-deep-night);font-size:72px;line-height:1}.writing-unsupported p{color:var(--color-stone);margin:0;font-size:14px}.writing-actions{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.btn-hint{color:#3c3489;cursor:pointer;background:#eeedfe;border:none;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:500;transition:background .15s}.btn-hint:hover{background:#cecbf6}.btn-retry{color:var(--color-stone);cursor:pointer;background:0 0;border:.5px solid #d3d1c7;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:500;transition:background .15s}.btn-retry:hover{background:#f1efe8}.login-page{background:var(--color-parchment);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:#fff;border:.5px solid #d3d1c7;border-radius:16px;flex-direction:column;align-items:center;gap:1rem;width:100%;max-width:400px;padding:3rem;display:flex;box-shadow:0 4px 24px #4a2fa014}.login-character{color:var(--color-primary);font-size:56px;line-height:1}.login-title{color:var(--color-deep-night);margin:0;font-size:22px;font-weight:500}.login-subtitle{color:var(--color-stone);margin:0;font-size:14px}.login-input{box-sizing:border-box;border:1px solid #d3d1c7;border-radius:8px;width:100%;padding:12px 16px;font-family:inherit;font-size:14px}.login-input:focus{border-color:#4a2fa0;outline:none;box-shadow:0 0 0 3px #4a2fa01a}.login-btn{color:#fff;cursor:pointer;background:#4a2fa0;border:none;border-radius:8px;width:100%;padding:12px;font-size:15px;font-weight:500}.login-error{color:var(--color-error);text-align:center;margin:0;font-size:13px}.login-toggle{color:#4a2fa0;cursor:pointer;background:0 0;border:none;font-size:13px;text-decoration:underline}