.app-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:0 1.5rem;height:64px;position:sticky;top:0;z-index:100}.header-content{max-width:1200px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;gap:2rem}.header-logo{display:flex;align-items:center;gap:.5rem;text-decoration:none}.logo-kr{font-size:1.25rem;font-weight:700;font-family:var(--font-korean);color:var(--dancheong-red)}.logo-en{font-size:1.125rem;font-weight:600;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-nav{display:flex;align-items:center;gap:.5rem}.nav-dropdown{position:relative}.nav-link{background:transparent;border:none;color:var(--text-secondary);font-size:.9rem;font-weight:500;padding:.5rem 1rem;cursor:pointer;border-radius:var(--radius-lg);transition:all .2s ease}.nav-link:hover{color:var(--text-primary);background:var(--bg-elevated)}.nav-link-highlight{color:var(--dancheong-red);font-weight:600}.nav-link-highlight:hover{background:var(--dancheong-red-10)}.dropdown-content{position:absolute;top:100%;left:0;min-width:200px;background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:.5rem;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(-10px);transition:all .2s ease;z-index:1000}.dropdown-content.show{opacity:1;visibility:visible;transform:translateY(0)}.dropdown-content a,.dropdown-item-disabled{display:block;padding:.75rem 1rem;color:var(--text-secondary);text-decoration:none;border-radius:var(--radius-md);font-size:.9rem;transition:all .2s ease}.dropdown-content a:hover{background:var(--dancheong-red-10);color:var(--dancheong-red)}.dropdown-item-disabled{opacity:.5;cursor:not-allowed}.dropdown-divider{display:block;height:1px;background:var(--border-color);margin:.5rem 0}.header-actions{display:flex;align-items:center;gap:.75rem}.stat-item{display:flex;align-items:center;gap:.25rem;padding:.25rem .5rem;background:var(--bg-elevated);border-radius:var(--radius-full);font-size:.85rem}.stat-icon{font-size:1rem}.stat-value{font-weight:600;color:var(--text-primary)}.theme-toggle{background:transparent;border:none;font-size:1.25rem;cursor:pointer;padding:.5rem;border-radius:var(--radius-full);transition:all .2s ease}.theme-toggle:hover{background:var(--bg-elevated)}.profile-button{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-full);background:var(--bg-elevated);text-decoration:none;transition:all .2s ease}.profile-button:hover{background:var(--dancheong-red-10)}.profile-icon{font-size:1rem}.mobile-menu-toggle{display:none;background:transparent;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-primary)}@media(max-width:768px){.mobile-menu-toggle{display:block}.header-nav{position:absolute;top:64px;left:0;right:0;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);flex-direction:column;padding:1rem;gap:.5rem;display:none}.header-nav.open{display:flex}.nav-dropdown{width:100%}.nav-link{width:100%;text-align:left}.dropdown-content{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding-left:1rem}}.site-footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:2rem 1.5rem;margin-top:auto}.footer-content{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}.footer-brand{display:flex;align-items:center;gap:.5rem}.footer-logo{font-size:1.5rem}.footer-name{font-size:1.25rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.footer-links{display:flex;align-items:center;gap:.75rem;flex-wrap:nowrap;justify-content:center}.footer-link{color:var(--text-secondary);text-decoration:none;font-size:.9rem;transition:color .2s ease;white-space:nowrap}.footer-link:hover{color:var(--dancheong-red)}.footer-divider{color:var(--text-secondary);opacity:.5}.footer-sister{margin:.5rem 0}.sister-link{display:inline-block;color:var(--hanbok-blue);text-decoration:none;font-size:.9rem;padding:.5rem 1rem;border:1px solid var(--hanbok-blue-20);border-radius:var(--radius-full);transition:all .2s ease;white-space:nowrap}.sister-link:hover{background:var(--hanbok-blue-20);color:var(--hanbok-blue)}.footer-copyright{color:var(--text-secondary);font-size:.85rem;margin:0;opacity:.7}.layout{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;display:flex;flex-direction:column}.home-page{overflow-x:hidden}.hero{position:relative;min-height:85vh;display:flex;align-items:center;padding:var(--space-8) 0;overflow:hidden}.hero-background{position:absolute;inset:0;z-index:0}.hero-gradient{position:absolute;inset:0;background:var(--gradient-hero)}.hero-pattern{position:absolute;inset:0;opacity:.03;background-image:radial-gradient(circle at 25% 25%,var(--dancheong-red) 2px,transparent 2px),radial-gradient(circle at 75% 75%,var(--hanbok-blue) 2px,transparent 2px);background-size:60px 60px}.hero-content{position:relative;z-index:1;display:grid;gap:var(--space-8);align-items:center}@media(min-width:1024px){.hero-content{grid-template-columns:1.2fr .8fr;gap:var(--space-12)}}.hero-text{animation:slideUp .6s ease-out}.hero-badge,.hero-title{margin-bottom:var(--space-4)}.hero-title-line{display:block;font-size:var(--text-4xl);font-weight:var(--font-bold);line-height:1.1}@media(min-width:640px){.hero-title-line{font-size:var(--text-5xl)}}.hero-subtitle{font-size:var(--text-2xl);color:var(--dancheong-red);margin-bottom:var(--space-4);font-weight:var(--font-medium)}.hero-description{font-size:var(--text-lg);color:var(--text-secondary);max-width:560px;margin-bottom:var(--space-8);line-height:var(--leading-relaxed)}.hero-actions{display:flex;flex-wrap:wrap;gap:var(--space-4)}.btn-arrow{margin-left:var(--space-2);transition:transform var(--transition-fast)}.btn:hover .btn-arrow{transform:translate(4px)}.hero-mascot{display:flex;flex-direction:column;align-items:center;justify-content:center;animation:fadeIn .8s ease-out .2s backwards}.mascot-container{position:relative;display:flex;align-items:center;justify-content:center}.mascot-emoji{font-size:10rem;line-height:1;animation:bounce 3s infinite ease-in-out}@media(min-width:640px){.mascot-emoji{font-size:14rem}}.mascot-glow{position:absolute;width:200px;height:200px;background:var(--dancheong-red-20);border-radius:50%;filter:blur(60px);z-index:-1}.mascot-name{font-size:var(--text-3xl);font-weight:var(--font-bold);color:var(--text-primary);margin-top:var(--space-4)}.mascot-subtitle{font-size:var(--text-sm);color:var(--text-secondary)}.section-header{text-align:center;max-width:640px;margin:0 auto var(--space-12)}.section-title{font-size:var(--text-3xl);font-weight:var(--font-bold);margin-bottom:var(--space-4)}.section-subtitle{font-size:var(--text-lg);color:var(--text-secondary)}.features-grid{display:grid;gap:var(--space-6)}@media(min-width:640px){.features-grid{grid-template-columns:repeat(2,1fr)}}.feature-card{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-6);text-decoration:none}.feature-icon{font-size:2.5rem;line-height:1;flex-shrink:0}.feature-content{flex:1}.feature-title{font-size:var(--text-xl);font-weight:var(--font-semibold);margin-bottom:var(--space-2);display:flex;align-items:baseline;gap:var(--space-2);flex-wrap:wrap}.feature-title-ko{font-size:var(--text-sm);color:var(--text-secondary);font-weight:var(--font-normal)}.feature-description{font-size:var(--text-sm);color:var(--text-secondary);line-height:var(--leading-relaxed)}.feature-arrow{font-size:var(--text-xl);color:var(--text-muted);opacity:0;transform:translate(-10px);transition:all var(--transition-base)}.feature-card:hover .feature-arrow{opacity:1;transform:translate(0)}.feature-red:hover{border-color:var(--dancheong-red-50)}.feature-blue:hover{border-color:var(--hanbok-blue-50)}.feature-gold:hover{border-color:#d4a84b80}.feature-green:hover{border-color:#4caf5080}.topik-section{background:var(--bg-secondary)}.topik-grid{display:grid;gap:var(--space-4)}@media(min-width:640px){.topik-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.topik-grid{grid-template-columns:repeat(3,1fr)}}.topik-card{background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-5);border-left:4px solid var(--level-color, var(--dancheong-red));transition:all var(--transition-base)}.topik-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.topik-level{display:inline-block;font-size:var(--text-xs);font-weight:var(--font-semibold);color:var(--level-color);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-2)}.topik-name{font-size:var(--text-base);font-weight:var(--font-semibold);margin-bottom:var(--space-2)}.topik-description{font-size:var(--text-sm);color:var(--text-secondary);margin-bottom:var(--space-3)}.topik-stats{display:flex;gap:var(--space-4)}.topik-stat{font-size:var(--text-xs);color:var(--text-muted)}.topik-stat strong{color:var(--text-primary);font-weight:var(--font-semibold)}.cta-card{background:var(--gradient-primary);border-radius:var(--radius-2xl);padding:var(--space-10);display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--space-6);position:relative;overflow:hidden}@media(min-width:768px){.cta-card{flex-direction:row;text-align:left;justify-content:space-between}}.cta-content{position:relative;z-index:1}.cta-title{font-size:var(--text-2xl);font-weight:var(--font-bold);color:#fff;margin-bottom:var(--space-4)}.cta-description{font-size:var(--text-base);color:#ffffffe6;margin-bottom:var(--space-6);max-width:400px}.cta-card .btn-primary{background:#fff;color:var(--dancheong-red)}.cta-card .btn-primary:hover{box-shadow:0 0 30px #ffffff4d}.cta-decoration{opacity:.15;color:#fff}@media(min-width:768px){.cta-decoration{position:absolute;right:var(--space-10);font-size:8rem}}.sister-project{padding:var(--space-8) 0}.sister-card{display:flex;flex-direction:column;align-items:center;gap:var(--space-4);padding:var(--space-6);background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-xl);text-align:center}@media(min-width:640px){.sister-card{flex-direction:row;text-align:left}}.sister-icon{font-size:3rem;flex-shrink:0}.sister-content{flex:1}.sister-title{font-size:var(--text-lg);font-weight:var(--font-semibold);margin-bottom:var(--space-1)}.sister-description{font-size:var(--text-sm);color:var(--text-secondary)}.legal-page{padding:var(--space-8) 0;min-height:100vh}.legal-page .page-header{text-align:center;margin-bottom:var(--space-8)}.legal-page .page-header h1{font-size:var(--text-3xl);font-weight:var(--font-bold);margin-bottom:var(--space-2)}.legal-page .page-header p{color:var(--text-secondary);font-size:var(--text-sm)}.legal-content{max-width:800px;margin:0 auto;padding:var(--space-8)}.legal-content 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.page-header{text-align:center;margin-bottom:var(--space-8)}.feedback-page .page-header h1{font-size:var(--text-3xl);font-weight:var(--font-bold);margin-bottom:var(--space-2)}.feedback-page .page-header p{color:var(--text-secondary)}.feedback-form-container{display:grid;grid-template-columns:1fr;gap:var(--space-6);max-width:800px;margin:0 auto var(--space-8)}.info-card{background:var(--dancheong-red-10);border:1px solid var(--dancheong-red-20)}.info-card h3{margin-top:0;color:var(--dancheong-red)}.info-card ol{margin:var(--space-4) 0;padding-left:var(--space-6)}.info-card ol li{margin:var(--space-2) 0;color:var(--text-secondary)}.note{color:var(--text-secondary);font-size:var(--text-sm);font-style:italic;margin-top:var(--space-4)}.feedback-form{padding:var(--space-8)}.form-group{margin-bottom:var(--space-6)}.form-group label{display:block;margin-bottom:var(--space-2);font-weight:var(--font-semibold);color:var(--text-primary)}.type-selector{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:var(--space-2)}.type-btn{padding:var(--space-3);border:2px solid var(--border-color);background:var(--bg-elevated);border-radius:var(--radius-lg);cursor:pointer;font-size:var(--text-sm);font-weight:var(--font-medium);color:var(--text-secondary);transition:all .2s ease;text-align:center}.type-btn:hover{border-color:var(--dancheong-red);background:var(--dancheong-red-10);color:var(--text-primary);transform:translateY(-2px)}.type-btn.active{background:var(--gradient-primary);color:#fff;border-color:transparent;box-shadow:var(--shadow-md)}.form-input,.form-textarea{width:100%;padding:var(--space-3);border:1px solid var(--border-color);border-radius:var(--radius-lg);font-size:var(--text-base);background:var(--bg-elevated);color:var(--text-primary);transition:all .2s ease;font-family:inherit}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--dancheong-red);box-shadow:0 0 0 3px var(--dancheong-red-20)}.form-input::placeholder,.form-textarea::placeholder{color:var(--text-muted)}.form-textarea{resize:vertical;min-height:150px}.submit-btn{width:100%;margin-top:var(--space-4)}.privacy-note{text-align:center;padding:var(--space-4);margin-top:var(--space-4);background:var(--bg-secondary);border-radius:var(--radius-lg);font-size:var(--text-sm);color:var(--text-secondary)}.feedback-success{text-align:center;padding:var(--space-10);max-width:500px;margin:0 auto var(--space-8)}.success-icon{font-size:4rem;margin-bottom:var(--space-4)}.feedback-success h2{margin-bottom:var(--space-4)}.issue-link a{color:var(--dancheong-red)}.success-note{color:var(--text-secondary);font-size:var(--text-sm);margin-top:var(--space-4)}.error-card{background:#e539351a;border:1px solid rgba(229,57,53,.3);text-align:center;padding:var(--space-4)}.error-message{color:var(--error);margin-bottom:var(--space-4)}.alternative-feedback{max-width:800px;margin:0 auto}.alternative-feedback h3{margin-top:0}@media(max-width:768px){.type-selector{grid-template-columns:repeat(2,1fr)}.feedback-form{padding:var(--space-4)}}.profile-page{padding:2rem 0;min-height:calc(100vh - 64px)}.profile-page .container{max-width:800px;margin:0 auto;padding:0 1.5rem}.profile-page .page-header{text-align:center;margin-bottom:2rem}.profile-page .page-header h1{font-size:2rem;margin-bottom:.5rem;color:var(--text-primary)}.profile-page .page-header p{color:var(--text-secondary)}.profile-page section.card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:1.5rem;margin-bottom:1.5rem}.profile-page section h2{font-size:1.25rem;margin-bottom:1rem;color:var(--text-primary)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem}.stat{text-align:center;padding:1rem;background:var(--bg-elevated);border-radius:var(--radius-lg)}.stat-value{font-size:1.5rem;font-weight:700;color:var(--dancheong-red);margin-bottom:.25rem}.stat-label{font-size:.85rem;color:var(--text-secondary)}.backup-section,.restore-section{margin-bottom:1.5rem;padding:1rem;background:var(--bg-elevated);border-radius:var(--radius-lg)}.backup-section h3,.restore-section h3{font-size:1rem;margin-bottom:.5rem;color:var(--text-primary)}.backup-section p,.restore-section p{font-size:.9rem;color:var(--text-secondary);margin-bottom:1rem}.file-input-group{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.file-input{display:none}.file-name{font-size:.9rem;color:var(--text-secondary);font-style:italic}.profile-page .btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius-lg);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease;border:none}.profile-page .btn-primary{background:var(--dancheong-red);color:#fff}.profile-page .btn-primary:hover{background:var(--dancheong-red-dark);transform:translateY(-2px)}.profile-page .btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.profile-page .btn-outline{background:transparent;border:2px solid var(--dancheong-red);color:var(--dancheong-red)}.profile-page .btn-outline:hover{background:var(--dancheong-red-10)}.profile-page .btn-danger{background:#dc3545;color:#fff}.profile-page .btn-danger:hover{background:#c82333}.message{padding:1rem;border-radius:var(--radius-lg);margin-top:1rem}.message.success{background:#28a7451a;color:#28a745;border:1px solid rgba(40,167,69,.2)}.message.error{background:#dc35451a;color:#dc3545;border:1px solid rgba(220,53,69,.2)}.danger-zone{border-color:#dc35454d!important}.danger-zone h2{color:#dc3545}.reset-option{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem;background:#dc35450d;border-radius:var(--radius-lg);flex-wrap:wrap}.reset-info h3{font-size:1rem;color:#dc3545;margin-bottom:.25rem}.reset-info p{font-size:.85rem;color:var(--text-secondary);margin:0}@media(max-width:640px){.stats-grid{grid-template-columns:repeat(2,1fr)}.reset-option{flex-direction:column;text-align:center}}.backup-preview{padding:.75rem 1rem;border-radius:var(--radius-lg);margin:1rem 0;font-size:.9rem}.backup-preview.compatible{background:#28a7451a;border:1px solid rgba(40,167,69,.2);color:#28a745}.backup-preview.incompatible{background:#dc35451a;border:1px solid rgba(220,53,69,.2);color:#dc3545}.wrong-app-badge{display:inline-block;margin-left:.5rem;padding:.25rem .5rem;background:#dc3545;color:#fff;border-radius:var(--radius-md);font-weight:600;font-size:.8rem}.donation-page{min-height:100vh;padding:var(--space-10) 0;background:linear-gradient(135deg,var(--dancheong-red-10),var(--hanbok-blue-20))}.donation-page .container{max-width:900px;margin:0 auto;padding:0 var(--space-6)}.donation-page .page-header{text-align:center;margin-bottom:var(--space-10)}.donation-page .page-header h1{font-size:var(--text-3xl);font-weight:var(--font-bold);margin-bottom:var(--space-2)}.donation-page .page-header p{color:var(--text-secondary)}.donation-intro{margin-bottom:var(--space-10);background:var(--bg-elevated);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.intro-content h2{font-size:var(--text-2xl);font-weight:var(--font-bold);margin-bottom:var(--space-4);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.intro-content p{color:var(--text-secondary);line-height:var(--leading-relaxed);margin-bottom:var(--space-4)}.benefits-list{list-style:none;padding:0;margin:var(--space-6) 0}.benefits-list li{padding:var(--space-3) 0;font-size:var(--text-base);color:var(--text-primary);border-bottom:1px solid var(--border-color)}.benefits-list li:last-child{border-bottom:none}.optional-note{background:var(--hanbok-blue-20);border-left:4px solid var(--hanbok-blue);padding:var(--space-5);border-radius:var(--radius-lg);margin-top:var(--space-6);line-height:var(--leading-relaxed);color:var(--text-primary)}.donation-options{margin-bottom:var(--space-10)}.options-title{font-size:var(--text-2xl);font-weight:var(--font-bold);color:var(--text-primary);text-align:center;margin-bottom:var(--space-3)}.options-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:var(--space-8)}.donate-button-container{display:flex;justify-content:center;margin-bottom:var(--space-10)}.donate-button{text-align:center;padding:var(--space-10) var(--space-16);text-decoration:none;transition:all .3s ease;cursor:pointer;background:linear-gradient(135deg,var(--dancheong-red-20),var(--hanbok-blue-20));border:2px solid var(--dancheong-red-50);max-width:400px;width:100%}.donate-button:hover{transform:translateY(-8px) scale(1.05);box-shadow:var(--shadow-glow);border-color:var(--dancheong-red)}.donate-emoji{font-size:4rem;margin-bottom:var(--space-4)}.donate-text{font-size:var(--text-2xl);font-weight:var(--font-bold);color:var(--text-primary);margin-bottom:var(--space-2)}.donate-subtitle{color:var(--text-secondary);font-weight:var(--font-medium)}.revolut-info{background:var(--bg-elevated);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.revolut-info h3{font-size:var(--text-xl);font-weight:var(--font-bold);color:var(--text-primary);margin-bottom:var(--space-4)}.revolut-info ul{list-style:none;padding:0;margin-bottom:var(--space-4)}.revolut-info ul li{padding:var(--space-2) 0;color:var(--text-secondary);line-height:var(--leading-relaxed)}.revolut-note{background:var(--bg-secondary);padding:var(--space-4);border-radius:var(--radius-lg);color:var(--text-secondary);font-size:var(--text-sm);border-left:3px solid var(--dancheong-red)}.thank-you-section{text-align:center;margin-bottom:var(--space-8);background:var(--bg-elevated);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--dancheong-red-20)}.thank-you-section h2{font-size:var(--text-2xl);font-weight:var(--font-bold);color:var(--text-primary);margin-bottom:var(--space-4)}.thank-you-message{color:var(--text-secondary);font-size:var(--text-lg);line-height:var(--leading-relaxed);margin-bottom:var(--space-8);max-width:600px;margin-left:auto;margin-right:auto}.thank-you-actions{display:flex;gap:var(--space-4);justify-content:center;flex-wrap:wrap}.transparency-note{text-align:center;padding:var(--space-6);background:var(--bg-secondary);border-radius:var(--radius-xl)}.transparency-note p{color:var(--text-secondary);font-size:var(--text-sm);line-height:var(--leading-relaxed);margin:0}@media(max-width:768px){.donate-button{padding:var(--space-8) var(--space-10)}.donate-emoji{font-size:3.5rem}.donate-text{font-size:var(--text-xl)}.thank-you-actions{flex-direction:column}.thank-you-actions .btn{width:100%}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{min-height:100vh;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}p,h1,h2,h3,h4,h5,h6{overflow-wrap:break-word}a{color:inherit;text-decoration:none}ul,ol{list-style:none}:root{--dancheong-red: #C73E3E;--dancheong-red-light: #E55858;--dancheong-red-dark: #8B2323;--dancheong-red-50: rgba(199, 62, 62, .5);--dancheong-red-20: rgba(199, 62, 62, .2);--dancheong-red-10: rgba(199, 62, 62, .1);--hanbok-blue: #3A5BA0;--hanbok-blue-light: #5D8AA8;--hanbok-blue-dark: #2A4170;--hanbok-blue-50: rgba(58, 91, 160, .5);--hanbok-blue-20: rgba(58, 91, 160, .2);--royal-gold: #D4A84B;--royal-gold-light: #F0D58C;--royal-gold-dark: #B08C30;--success: #4CAF50;--success-light: #81C784;--error: #E53935;--error-light: #EF5350;--warning: #FF9800;--warning-light: #FFB74D;--info: var(--hanbok-blue);--hanji-white: #F5F0E8;--hanji-cream: #FAF7F2;--ink-black: #1A1A1A;--bamboo-gray: #6B7B6E;--bamboo-gray-light: #8A9A8D;--stone-gray: #9CA3AF;--mist-gray: #E5E7EB;--bg-primary: var(--hanji-white);--bg-secondary: var(--hanji-cream);--bg-elevated: #FFFFFF;--text-primary: var(--ink-black);--text-secondary: var(--bamboo-gray);--text-muted: var(--stone-gray);--border-color: var(--mist-gray);--border-color-strong: var(--bamboo-gray-light);--gradient-primary: linear-gradient(135deg, var(--dancheong-red) 0%, var(--hanbok-blue) 100%);--gradient-gold: linear-gradient(135deg, var(--royal-gold) 0%, var(--dancheong-red) 100%);--gradient-hero: linear-gradient(180deg, var(--dancheong-red-10) 0%, transparent 60%);--gradient-card: linear-gradient(135deg, var(--bg-elevated) 0%, var(--hanji-cream) 100%);--font-ko: "Noto Sans KR", "Malgun Gothic", "맑은 고딕", sans-serif;--font-en: "Inter", system-ui, -apple-system, sans-serif;--font-family: var(--font-en);--text-xs: clamp(.75rem, .7rem + .25vw, .875rem);--text-sm: clamp(.875rem, .8rem + .35vw, 1rem);--text-base: clamp(1rem, .9rem + .5vw, 1.125rem);--text-lg: clamp(1.125rem, 1rem + .625vw, 1.25rem);--text-xl: clamp(1.25rem, 1.1rem + .75vw, 1.5rem);--text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);--text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);--text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3rem);--text-5xl: clamp(3rem, 2rem + 5vw, 4.5rem);--font-light: 300;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--leading-tight: 1.25;--leading-snug: 1.375;--leading-normal: 1.5;--leading-relaxed: 1.625;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-glow: 0 0 20px var(--dancheong-red-50);--shadow-glow-blue: 0 0 20px var(--hanbok-blue-50);--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--transition-bounce: .3s cubic-bezier(.68, -.55, .265, 1.55);--z-dropdown: 100;--z-sticky: 200;--z-fixed: 300;--z-modal-backdrop: 400;--z-modal: 500;--z-tooltip: 600;--header-height: 4rem;--container-max: 1200px;--container-sm: 640px;--container-md: 768px;--container-lg: 1024px}[data-theme=dark]{--bg-primary: #0F1419;--bg-secondary: #1A2027;--bg-elevated: #232B35;--text-primary: #E8EAED;--text-secondary: #9AA0A6;--text-muted: #6B7280;--border-color: #2D3843;--border-color-strong: #4A5568;--gradient-hero: linear-gradient(180deg, rgba(199, 62, 62, .15) 0%, transparent 60%);--gradient-card: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-secondary) 100%);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .3), 0 2px 4px -1px rgba(0, 0, 0, .2);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .4), 0 4px 6px -2px rgba(0, 0, 0, .2);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .4), 0 10px 10px -5px rgba(0, 0, 0, .2)}body{font-family:var(--font-family);font-size:var(--text-base);line-height:var(--leading-normal);color:var(--text-primary);background-color:var(--bg-primary);transition:background-color var(--transition-slow),color var(--transition-slow)}.korean-text,[lang=ko]{font-family:var(--font-ko)}.korean-large{font-family:var(--font-ko);font-weight:var(--font-bold);font-size:var(--text-5xl);line-height:1}.korean-medium{font-family:var(--font-ko);font-weight:var(--font-medium);font-size:var(--text-3xl)}.heading-1{font-size:var(--text-5xl);font-weight:var(--font-bold);line-height:var(--leading-tight);letter-spacing:-.025em}.heading-2{font-size:var(--text-4xl);font-weight:var(--font-bold);line-height:var(--leading-tight);letter-spacing:-.02em}.heading-3{font-size:var(--text-3xl);font-weight:var(--font-semibold);line-height:var(--leading-snug)}.heading-4{font-size:var(--text-2xl);font-weight:var(--font-semibold);line-height:var(--leading-snug)}.text-gradient{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 var(--space-4)}@media(min-width:640px){.container{padding:0 var(--space-6)}}@media(min-width:1024px){.container{padding:0 var(--space-8)}}.section{padding:var(--space-16) 0}.flex-center{display:flex;align-items:center;justify-content:center}.grid-responsive{display:grid;gap:var(--space-6);grid-template-columns:1fr}@media(min-width:640px){.grid-responsive{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.grid-responsive{grid-template-columns:repeat(3,1fr)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-size:var(--text-base);font-weight:var(--font-medium);line-height:1;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover:not(:disabled){box-shadow:var(--shadow-glow),var(--shadow-lg);transform:translateY(-2px)}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){border-color:var(--dancheong-red);box-shadow:var(--shadow-md)}.btn-ghost{background:transparent;color:var(--text-primary)}.btn-ghost:hover:not(:disabled){background:var(--dancheong-red-10);color:var(--dancheong-red)}.btn-lg{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);border-radius:var(--radius-xl)}.btn-sm{padding:var(--space-2) var(--space-4);font-size:var(--text-sm);border-radius:var(--radius-md)}.card{background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-6);transition:all var(--transition-base)}.card:hover{border-color:var(--dancheong-red-50);box-shadow:var(--shadow-lg);transform:translateY(-4px)}.card-header{margin-bottom:var(--space-4)}.card-title{font-size:var(--text-xl);font-weight:var(--font-semibold);color:var(--text-primary);margin-bottom:var(--space-2)}.card-description{font-size:var(--text-sm);color:var(--text-secondary)}.badge{display:inline-flex;align-items:center;padding:var(--space-1) var(--space-3);font-size:var(--text-xs);font-weight:var(--font-medium);border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em}.badge-primary{background:var(--dancheong-red-20);color:var(--dancheong-red)}.badge-secondary{background:var(--hanbok-blue-20);color:var(--hanbok-blue)}.badge-success{background:#4caf5033;color:var(--success)}.badge-gold{background:#d4a84b33;color:var(--royal-gold-dark)}.input{width:100%;padding:var(--space-3) var(--space-4);font-size:var(--text-base);color:var(--text-primary);background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-lg);outline:none;transition:all var(--transition-fast)}.input:focus{border-color:var(--dancheong-red);box-shadow:0 0 0 3px var(--dancheong-red-20)}.input::placeholder{color:var(--text-muted)}.progress-bar{width:100%;height:8px;background:var(--mist-gray);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background:var(--gradient-primary);border-radius:var(--radius-full);transition:width var(--transition-slow)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.animate-fade-in{animation:fadeIn var(--transition-slow) ease-out}.animate-slide-up{animation:slideUp var(--transition-slow) ease-out}.animate-bounce{animation:bounce 2s infinite ease-in-out}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--bamboo-gray);border-radius:var(--radius-full);border:2px solid var(--bg-secondary)}::-webkit-scrollbar-thumb:hover{background:var(--dancheong-red)}::selection{background:var(--dancheong-red);color:#fff}:focus-visible{outline:2px solid var(--dancheong-red);outline-offset:2px}#root{min-height:100vh;display:flex;flex-direction:column}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.topik-1{--level-color: #4CAF50}.topik-2{--level-color: #8BC34A}.topik-3{--level-color: #FF9800}.topik-4{--level-color: #FF5722}.topik-5{--level-color: #E91E63}.topik-6{--level-color: #9C27B0}