@import "https://fonts.googleapis.com/css2?family=Coiny&family=Nunito:wght@300;400;500;600;700;800&display=swap";:root{--pink:#ffe5ec;--pink-deep:#ff8fab;--yellow:#fff4d6;--yellow-deep:#f4c430;--green:#ddf4e7;--green-deep:#48bb78;--blue:#dceeff;--blue-deep:#4299e1;--purple:#fff0f5;--purple-deep:#e91e7b;--bg:#faf9fb;--surface:#fff;--surface-hover:#f8f7fa;--text:#2d3748;--text-secondary:#718096;--text-muted:#a0aec0;--border:#edf2f7;--border-light:#f7fafc;--accent:#e91e7b;--accent-light:#f472a8;--accent-soft:#fce7f3;--accent-strong:#b83280;--success-soft:#f0fff4;--success:#38a169;--success-strong:#22543d;--info-soft:#ebf8ff;--info:#3182ce;--info-strong:#2c5282;--warning-soft:#fffaeb;--warning:#dd6b20;--warning-strong:#b7791f;--danger-soft:#fff5f5;--danger:#e53e3e;--danger-strong:#c53030;--gray-200:#e2e8f0;--gray-300:#cbd5e0;--gray-600:#4a5568;--gradient-brand:linear-gradient(135deg, #f472a8, #e91e7b);--sidebar-w:260px;--topbar-h:64px;--radius:14px;--radius-sm:8px;--radius-lg:20px;--shadow-sm:0 2px 4px #00000005;--shadow:0 6px 18px #0000000a;--shadow-lg:0 10px 30px #0000000f;--shadow-glow:0 0 20px #e91e7b1f}*{box-sizing:border-box;margin:0;padding:0}button,input,select,textarea{font-family:inherit}::-webkit-scrollbar{width:14px;height:14px}::-webkit-scrollbar-track{background:var(--pink);border:1.5px dashed var(--pink-deep);border-radius:20px;margin:3px}::-webkit-scrollbar-thumb{background:var(--pink-deep);border:3.5px solid var(--pink);border-radius:20px}::-webkit-scrollbar-thumb:hover{background:var(--accent)}*{scrollbar-width:auto;scrollbar-color:var(--pink-deep) var(--pink)}body{background:var(--bg);color:var(--text);font-family:Nunito,-apple-system,sans-serif;font-weight:500;line-height:1.6;overflow-x:hidden}.app-layout{min-height:100vh;display:flex}.sidebar{display:none!important}.sidebar-logo{border-bottom:1px solid var(--border-light);align-items:center;gap:12px;padding:20px 24px;display:flex}.logo-icon{background:linear-gradient(135deg, var(--pink-deep), var(--purple-deep));color:#fff;border-radius:12px;justify-content:center;align-items:center;width:42px;height:42px;font-family:Coiny,cursive;font-size:20px;display:flex}.logo-text{background:linear-gradient(135deg, var(--pink-deep), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-family:Coiny,cursive;font-size:18px}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:12px;display:flex;overflow-y:auto}.nav-item{border-radius:var(--radius-sm);cursor:pointer;color:var(--text-secondary);text-align:left;background:0 0;border:none;align-items:center;gap:12px;width:100%;padding:11px 16px;font-family:inherit;font-size:14px;font-weight:500;transition:all .2s;display:flex}.nav-item:hover{background:var(--surface-hover);color:var(--text)}.nav-item.active{color:var(--accent);background:linear-gradient(135deg,#e91e7b14,#f472a814);font-weight:600}.nav-item.active .nav-icon{color:var(--accent)}.nav-icon{flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;font-size:18px;display:flex}.sidebar-footer{border-top:1px solid var(--border-light);padding:16px}.user-profile{border-radius:var(--radius-sm);align-items:center;gap:12px;padding:8px;display:flex}.user-avatar{background:linear-gradient(135deg, var(--green-deep), var(--blue-deep));color:#fff;border-radius:10px;justify-content:center;align-items:center;width:38px;height:38px;font-size:16px;font-weight:700;display:flex}.user-info{flex-direction:column;display:flex}.user-name{font-size:13px;font-weight:600}.user-level{color:var(--text-muted);font-size:11px}.main-content{flex:1;max-width:100vw;min-height:100vh;margin-left:0;transition:margin-left .3s cubic-bezier(.4,0,.2,1);overflow-x:hidden}.topbar{height:var(--topbar-h);background:var(--surface);border-bottom:1px solid var(--border-light);z-index:50;align-items:center;gap:clamp(6px,1.5vw,16px);padding:0 clamp(8px,2vw,28px);display:flex;position:sticky;top:0}.menu-toggle{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;width:36px;height:36px;color:var(--text-secondary);justify-content:center;align-items:center;transition:all .2s;display:flex}.menu-toggle:hover{background:var(--surface-hover);color:var(--accent);border-color:var(--accent-light)}@media (width>=769px){.app-layout.sidebar-collapsed .sidebar{transform:translate(-100%)}.app-layout.sidebar-collapsed .main-content{margin-left:0}}.search-box{background:var(--bg);border-radius:10px;flex:1;align-items:center;gap:8px;min-width:0;max-width:480px;padding:0 14px;display:flex}.search-box input{color:var(--text);background:0 0;border:none;outline:none;flex:1;padding:10px 0;font-family:inherit;font-size:14px}.search-icon{color:var(--text-muted);flex-shrink:0;font-size:16px}.topbar-actions{flex-shrink:0;align-items:center;gap:clamp(4px,1vw,12px);margin-left:auto;display:flex}.notif-btn{cursor:pointer;background:0 0;border:none;padding:6px;font-size:20px;position:relative}.notif-badge{background:var(--danger);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:16px;height:16px;font-size:10px;font-weight:700;display:flex;position:absolute;top:0;right:0}.page-content{padding:clamp(10px,3vw,28px);animation:.3s fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.page-title{color:var(--text);margin-bottom:4px;font-family:Coiny,cursive;font-size:clamp(18px,4vw,26px)}.page-subtitle{color:var(--text-secondary);margin-bottom:clamp(12px,3vw,24px);font-size:clamp(12px,2vw,14px)}.card{background:var(--surface);border-radius:var(--radius);border:2px solid var(--gray-200);padding:24px;transition:box-shadow .2s,transform .2s;box-shadow:0 8px 24px #959da51f,0 2px 8px #0000000a}.card:hover{box-shadow:0 12px 28px #00000017,0 3px 8px #0000000d}.card-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.card-title{font-size:16px;font-weight:700}.card-badge{border-radius:20px;padding:4px 12px;font-size:11px;font-weight:600}.grid-2{grid-template-columns:repeat(2,1fr);gap:20px;display:grid}.grid-3{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.grid-4{grid-template-columns:repeat(4,1fr);gap:20px;display:grid}.grid-auto{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;display:grid}.stat-card{border-radius:var(--radius);background:var(--surface);border:1px solid var(--border-light);align-items:center;gap:16px;padding:20px;transition:transform .2s;display:flex}.stat-card:hover{transform:translateY(-2px)}.stat-icon{border-radius:14px;justify-content:center;align-items:center;width:48px;height:48px;font-size:22px;display:flex}.stat-value{font-size:24px;font-weight:800;line-height:1}.stat-label{color:var(--text-secondary);margin-top:2px;font-size:13px}.progress-bar{background:var(--border-light);border-radius:4px;height:8px;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--accent), var(--accent-light));border-radius:4px;height:100%;transition:width .6s cubic-bezier(.4,0,.2,1)}.btn{border-radius:var(--radius-sm);cursor:pointer;border:none;align-items:center;gap:8px;padding:10px 20px;font-family:inherit;font-size:14px;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--accent), var(--accent-light));color:#fff;box-shadow:0 4px 12px #e91e7b4d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #e91e7b66}.btn-secondary{background:var(--bg);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--surface-hover)}.btn-sm{padding:6px 14px;font-size:12px}.btn-lg{padding:14px 28px;font-size:16px}.tag{border-radius:20px;align-items:center;gap:4px;padding:4px 12px;font-size:12px;font-weight:600;display:inline-flex}.tag-pink{background:var(--pink);color:var(--pink-deep)}.tag-green{background:var(--green);color:var(--green-deep)}.tag-blue{background:var(--blue);color:var(--blue-deep)}.tag-yellow{background:var(--yellow);color:var(--yellow-deep)}.tag-purple{background:var(--purple);color:var(--purple-deep)}.quest-item{border-radius:var(--radius-sm);background:var(--bg);align-items:center;gap:14px;padding:14px 16px;transition:background .2s;display:flex}.quest-item:hover{background:var(--surface-hover)}.quest-icon{font-size:24px}.quest-info{flex:1}.quest-title{font-size:14px;font-weight:600}.quest-progress-text{color:var(--text-muted);font-size:12px}.quest-xp{color:var(--accent);font-size:13px;font-weight:700}.continue-item{border-radius:var(--radius-sm);background:var(--bg);cursor:pointer;align-items:center;gap:14px;padding:16px;transition:all .2s;display:flex}.continue-item:hover{background:var(--surface-hover);transform:translate(4px)}.continue-icon{font-size:28px}.continue-info{flex:1}.continue-title{font-size:14px;font-weight:600}.continue-sub{color:var(--text-muted);font-size:12px}.flashcard-container{perspective:1000px;cursor:pointer;width:100%;max-width:480px;height:440px;margin:0 auto}.flashcard{width:100%;height:100%;transform-style:preserve-3d;will-change:transform;transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative;transform:translate(0,0)}.flashcard.flipped{transform:rotateY(180deg)translate(0,0)}.flashcard-front,.flashcard-back{backface-visibility:hidden;border-radius:var(--radius-lg);box-shadow:var(--shadow);flex-direction:column;justify-content:center;align-items:center;padding:24px;display:flex;position:absolute;inset:0;overflow:hidden;transform:translate(0,0)}.flashcard-front{background:linear-gradient(135deg, var(--accent), var(--accent-light));color:#fff}.flashcard-back{background:var(--surface);border:2px solid var(--border-light);transform:rotateY(180deg)}.flashcard-word{margin-bottom:12px;font-family:Coiny,cursive;font-size:48px}.flashcard-pronunciation{opacity:.8;margin-bottom:8px;font-size:18px}.flashcard-type{background:#fff3;border-radius:20px;padding:4px 14px;font-size:13px}.flashcard-meaning{color:var(--accent);margin-bottom:16px;font-size:28px;font-weight:700}.flashcard-example{text-align:center;color:var(--text-secondary);font-size:14px;line-height:1.8}.flip-hint-icon{animation:3.2s ease-in-out infinite flip-hint-spin;display:inline-block}@keyframes flip-hint-spin{0%,65%{transform:rotate(0)}82%{transform:rotate(180deg)}to{transform:rotate(360deg)}}.hangul-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:10px;display:grid}.hangul-grid--alpha{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.hangul-alpha-card{background:var(--surface);border:2px solid var(--border-light);border-radius:var(--radius-sm);flex-direction:column;min-height:0;transition:border-color .2s,box-shadow .2s;display:flex;overflow:hidden}.hangul-alpha-card:hover{border-color:var(--accent);box-shadow:var(--shadow-glow)}.hangul-alpha-card--consonant:hover{border-color:var(--green-deep)}.hangul-alpha-card__listen{cursor:pointer;text-align:center;width:100%;min-height:148px;font:inherit;color:inherit;box-sizing:border-box;-webkit-tap-highlight-color:transparent;background:0 0;border:none;flex-direction:column;justify-content:center;align-items:center;gap:6px;margin:0;padding:18px 14px 12px;display:flex}.hangul-alpha-card__listen:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.hangul-alpha-card__char{letter-spacing:-.02em;font-family:Coiny,Nunito,sans-serif;font-size:clamp(42px,3.2vw,52px);font-weight:800;line-height:1.05}.hangul-alpha-card__name{color:var(--text);text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:14px;font-weight:700;line-height:1.25;overflow:hidden}.hangul-alpha-card__rom{color:var(--text-secondary);font-size:13px;font-weight:700;line-height:1.25}.hangul-alpha-card__sound{color:var(--text-secondary);-webkit-line-clamp:2;word-break:break-word;-webkit-box-orient:vertical;max-width:100%;padding:0 2px;font-size:13px;font-weight:600;line-height:1.3;display:-webkit-box;overflow:hidden}.hangul-alpha-card__sound strong{font-weight:800}.hangul-alpha-card__hear{color:var(--accent);opacity:1;background:#e91e7b14;border-radius:999px;align-items:center;gap:5px;margin-top:6px;padding:4px 10px;font-size:13px;font-weight:800;display:inline-flex}.hangul-alpha-card--consonant .hangul-alpha-card__hear{color:var(--green-deep);background:#48bb781a}.hangul-alpha-card__srs{border:none;border-top:1px solid var(--border-light);width:100%;min-height:40px;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;background:#00000005;justify-content:center;align-items:center;margin:0;padding:8px 10px;font-family:inherit;font-size:12px;font-weight:700;display:flex}.hangul-alpha-card__srs:hover{color:var(--accent);background:#805ad50f}.hangul-alpha-card--consonant .hangul-alpha-card__srs:hover{color:var(--green-deep);background:#48bb7814}.hangul-alpha-card__srs:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}@media (width<=900px){.hangul-grid--alpha{grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:12px}.hangul-alpha-card__listen{gap:5px;min-height:128px;padding:14px 10px 10px}.hangul-alpha-card__char{font-size:clamp(36px,5vw,44px)}}@media (width<=520px){.hangul-grid--alpha{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.hangul-alpha-card__listen{gap:3px;min-height:44px;padding:10px 6px 6px}.hangul-alpha-card__char{letter-spacing:normal;font-size:30px}.hangul-alpha-card__name{font-size:12px}.hangul-alpha-card__rom{font-size:12px;font-weight:600}.hangul-alpha-card__sound{font-size:10px;font-weight:600}.hangul-alpha-card__hear{background:0 0;gap:4px;margin-top:4px;padding:0;font-size:11px;font-weight:700}.hangul-alpha-card__srs{min-height:40px;padding:6px 8px;font-size:11px}}.hangul-cell{aspect-ratio:1;background:var(--surface);border:2px solid var(--border-light);border-radius:var(--radius-sm);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:4px;transition:all .2s;display:flex}.hangul-cell:hover{border-color:var(--accent);box-shadow:var(--shadow-glow);transform:scale(1.08)}.hangul-cell.active{border-color:var(--accent);background:var(--purple)}.hangul-char{font-size:32px;font-weight:700}.hangul-rom{color:var(--text-muted);font-size:11px}.grammar-card{background:var(--surface);border:2px solid var(--gray-200);border-radius:var(--radius);cursor:pointer;padding:24px;transition:all .25s;box-shadow:0 8px 24px #959da51f,0 2px 8px #0000000a}.grammar-card:hover{border-color:var(--accent);box-shadow:0 10px 24px #00000014, 0 3px 6px #0000000a, var(--shadow-glow);transform:translateY(-3px)}.grammar-pattern{color:var(--accent);margin-bottom:6px;font-size:24px;font-weight:800}.grammar-name{margin-bottom:8px;font-size:15px;font-weight:600}.grammar-formula{color:var(--text-secondary);background:var(--bg);border-radius:var(--radius-sm);padding:8px 12px;font-size:13px}.exercise-box{background:var(--bg);border-radius:var(--radius);margin-top:16px;padding:24px}.exercise-question{margin-bottom:16px;font-size:18px;font-weight:600}.exercise-input{border:2px solid var(--border);border-radius:var(--radius-sm);outline:none;width:100%;padding:12px 16px;font-family:inherit;font-size:16px;transition:border-color .2s}.exercise-input:focus{border-color:var(--accent)}.exercise-input.correct{border-color:var(--success);background:var(--success-soft)}.exercise-input.wrong{border-color:var(--danger);background:var(--danger-soft)}.exercise-hint{color:var(--text-muted);margin-top:8px;font-size:13px;font-style:italic}.syl-root{flex-direction:column;gap:16px;width:100%;max-width:760px;margin:0 auto;display:flex}.syl-mode-bar{background:var(--surface);border:1.5px solid var(--border);border-radius:12px;gap:4px;width:100%;max-width:360px;margin:0 auto;padding:4px;display:flex}.syl-mode-tab{min-height:42px;color:var(--text-secondary);font:inherit;cursor:pointer;touch-action:manipulation;background:0 0;border:none;border-radius:9px;flex:1 1 0;font-size:14px;font-weight:700;transition:background .15s,color .15s,box-shadow .15s}.syl-mode-tab:hover:not(.is-active){color:var(--text);background:color-mix(in srgb, var(--bg) 70%, transparent)}.syl-mode-tab.is-active{background:var(--bg,#fff);color:var(--accent);box-shadow:0 1px 4px color-mix(in srgb, var(--text) 12%, transparent);border:1.5px solid color-mix(in srgb, var(--accent) 35%, var(--border))}.syl-mode-panel{min-width:0}.syl-mode-tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.syl-section-title{color:var(--text);margin:0;font-size:18px;font-weight:800;line-height:1.3}.syl-step-body,.syl-lead{color:var(--text-secondary);margin:0 0 10px;font-size:15px;line-height:1.55}.syl-note{color:var(--text-secondary);margin:0;font-size:13px}.syl-muted{color:var(--text-muted);font-weight:500}.syl-term-kr{color:var(--text-muted);font-size:.92em;font-weight:600}.syl-theory{width:100%}.syl-theory-inner{max-width:740px;margin:0 auto}.syl-theory-header{margin-bottom:14px}.syl-theory-header .syl-section-title{margin-bottom:8px}.syl-accordion{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.syl-accordion-item{border:1.5px solid var(--border);border-radius:var(--radius-sm,12px);background:var(--surface);overflow:hidden}.syl-accordion-item.is-open{border-color:color-mix(in srgb, var(--accent) 28%, var(--border))}.syl-accordion-heading{font-size:inherit;font-weight:inherit;margin:0}.syl-accordion-trigger{cursor:pointer;text-align:left;width:100%;font:inherit;color:var(--text);touch-action:manipulation;background:0 0;border:none;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;display:flex}.syl-accordion-trigger:hover{background:color-mix(in srgb, var(--bg) 55%, transparent)}.syl-accordion-trigger:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.syl-accordion-meta{flex-direction:column;gap:2px;min-width:0;display:flex}.syl-step-num{letter-spacing:.04em;text-transform:uppercase;color:var(--accent);font-size:11px;font-weight:700}.syl-accordion-title{font-size:15px;font-weight:800;line-height:1.35}.syl-accordion-state{width:28px;height:28px;color:var(--text-muted);background:var(--bg);border:1px solid var(--border);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;font-size:18px;font-weight:700;display:inline-flex}.syl-accordion-panel{border-top:1px solid var(--border-light,var(--border))}.syl-accordion-body{padding:14px 16px 18px}.syl-formula{background:color-mix(in srgb, var(--purple) 70%, var(--surface));border:1.5px solid color-mix(in srgb, var(--accent) 25%, transparent);border-radius:var(--radius-sm);text-align:center;margin:10px 0 14px;padding:12px 14px}.syl-formula-vi{color:var(--text);margin-bottom:4px;font-size:15px;font-weight:700}.syl-formula-kr{color:var(--text-muted);font-size:13px;font-weight:600}.syl-layout-grid,.syl-group-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin-top:10px;display:grid}.syl-layout-card,.syl-group-card{background:var(--bg);border:1px solid var(--border-light,var(--border));border-radius:10px;margin-top:0;padding:12px 14px}.syl-layout-title{margin-bottom:2px;font-size:14px;font-weight:800}.syl-layout-when{margin-bottom:8px;font-size:12px}.syl-layout-note{color:var(--text-secondary);margin:8px 0 0;font-size:13px;line-height:1.45}.syl-diagram{flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;margin:8px 0;display:flex}.syl-diagram-row,.syl-diagram-col,.syl-diagram-complex{justify-content:center;align-items:center;gap:6px;display:flex}.syl-diagram-col{flex-direction:column}.syl-diagram-complex{grid-template-columns:1fr 1fr;gap:6px;display:grid}.syl-diagram-cell{border:1.5px solid var(--border);background:var(--surface);border-radius:10px;justify-content:center;align-items:center;min-width:44px;min-height:44px;font-size:22px;font-weight:800;display:flex}.syl-diagram-cell--choseong{border-color:color-mix(in srgb, var(--blue-deep) 45%, var(--border));background:var(--blue)}.syl-diagram-cell--jungseong{border-color:color-mix(in srgb, var(--accent) 40%, var(--border));background:var(--pink)}.syl-diagram-arrow{color:var(--text-muted);font-size:20px;font-weight:800}.syl-diagram-result{color:var(--accent);font-size:36px;font-weight:900;line-height:1}.syl-jamo-row{flex-wrap:wrap;gap:6px;margin:10px 0;display:flex}.syl-jamo-pill{background:var(--surface);border:1.5px solid var(--border);border-radius:8px;justify-content:center;align-items:center;min-width:32px;height:32px;padding:0 8px;font-size:15px;font-weight:700;display:inline-flex}.syl-mini-example{align-items:center;gap:10px;margin-top:8px;display:flex}.syl-mini-char{color:var(--accent);font-size:28px;font-weight:900}.syl-batchim-visual{flex-direction:column;align-items:center;gap:12px;margin:12px 0;display:flex}.syl-block{flex-direction:column;align-items:center;gap:4px;display:flex}.syl-block-main{border:1.5px dashed color-mix(in srgb, var(--accent) 40%, var(--border));background:var(--surface);border-radius:14px;justify-content:center;align-items:center;width:80px;height:80px;display:flex}.syl-block--batchim 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