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.625rem;background:#f8f9fa;border-radius:var(--radius-sm);font-weight:600}.price-original-small{font-size:var(--font-size-xs);color:var(--color-text-muted);text-decoration:line-through}.price-current-bold{font-size:var(--font-size-lg);font-weight:800;color:#667eea;letter-spacing:-.3px}.price-free-label{font-size:var(--font-size-lg);font-weight:800;color:#059669}.view-more{text-align:center;margin-top:var(--spacing-2xl)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-md) var(--spacing-xl);border-radius:var(--radius-md);font-size:var(--font-size-base);font-weight:600;text-decoration:none;transition:var(--transition-base);cursor:pointer;border:none;font-family:inherit}.btn-outline{background:transparent;color:#667eea;border:2px solid var(--color-primary)}.btn-outline:hover{background:var(--color-primary);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-lg{padding:var(--spacing-lg) var(--spacing-2xl);font-size:var(--font-size-lg)}.features-section{padding:var(--spacing-3xl) 0 4rem 0;background:var(--color-bg-white);border-top:none}.features-header{text-align:center;margin-bottom:var(--spacing-3xl)}.features-title{font-size:var(--font-size-3xl);font-weight:800;color:var(--color-text-primary);margin-bottom:var(--spacing-sm);letter-spacing:-.5px}.features-subtitle{font-size:var(--font-size-lg);color:var(--color-text-muted);font-weight:400}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-xl)}.feature-card{background:var(--color-bg-white);padding:var(--spacing-xl);border-radius:var(--radius-lg);text-align:center;transition:var(--transition-base);box-shadow:var(--shadow-sm);border:1px solid var(--color-border)}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#667eea}.feature-title{font-size:var(--font-size-xl);font-weight:700;color:var(--color-text-primary);margin-bottom:var(--spacing-sm)}.feature-description{font-size:var(--font-size-base);color:var(--color-text-secondary);line-height:1.6}@media(max-width:1024px){.container{padding:0 var(--spacing-lg)}.courses-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-lg)}.section-title,.features-title{font-size:var(--font-size-2xl)}}@media(max-width:768px){.courses-section{padding:var(--spacing-2xl) 0}.section-header{margin-bottom:var(--spacing-2xl)}.section-title{font-size:var(--font-size-xl)}.section-description{font-size:var(--font-size-base)}.courses-grid{grid-template-columns:1fr;gap:var(--spacing-md)}.course-thumbnail-wrapper{height:180px}.features-grid{grid-template-columns:1fr;gap:var(--spacing-md)}.features-section{padding:var(--spacing-2xl) 0}.features-title{font-size:var(--font-size-xl)}.btn-lg{width:100%}}@media(max-width:480px){.container{padding:0 var(--spacing-md)}.section-badge{padding:.375rem 1rem;font-size:.625rem}.course-card-title{font-size:var(--font-size-base)}.badge-overlay{top:var(--spacing-sm);left:var(--spacing-sm);right:var(--spacing-sm)}}.section-title-link{cursor:pointer;transition:color .2s ease;text-decoration:none;color:var(--color-text-primary)}.section-title-link:hover{color:#667eea}.badge-cert{display:none}.cert-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.cert-card-home{background:var(--color-bg-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:var(--transition-base);cursor:pointer;display:flex;flex-direction:column;height:100%;border:1px solid var(--color-border)}.cert-card-home:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:#667eea}.cert-thumbnail-wrapper{position:relative;width:100%;height:180px;overflow:hidden;background:#f0f0ff}.cert-thumbnail-img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}.cert-card-home:hover .cert-thumbnail-img{transform:scale(1.08)}.cert-thumbnail-placeholder{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);gap:8px}.cert-placeholder-icon{font-size:2.5rem;line-height:1}.cert-placeholder-text{color:#fff;font-size:var(--font-size-base);font-weight:700;letter-spacing:1px}.cert-badge-overlay{position:absolute;top:var(--spacing-md);left:var(--spacing-md);right:var(--spacing-md);display:flex;justify-content:space-between;align-items:flex-start}.cert-badge-tag{padding:.375rem .75rem;background:#667eeaf2;color:#fff;border-radius:var(--radius-sm);font-size:var(--font-size-xs);font-weight:700;letter-spacing:.5px;text-transform:uppercase;box-shadow:var(--shadow-sm)}.cert-card-content{padding:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-sm);flex:1}.cert-card-title{font-size:var(--font-size-lg);font-weight:700;color:var(--color-text-primary);line-height:1.4;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis;min-height:2.8em}.cert-info-row{display:flex;gap:var(--spacing-md);padding:var(--spacing-sm) 0;border-top:1px solid var(--color-border-light);border-bottom:1px solid var(--color-border-light)}.cert-info-item{display:flex;flex-direction:column;gap:2px;flex:1}.cert-info-label{font-size:var(--font-size-xs);color:var(--color-text-muted);font-weight:500}.cert-info-value{font-size:var(--font-size-sm);color:var(--color-text-primary);font-weight:700}.cert-retry-info{font-size:var(--font-size-xs);color:#4c3db5;background:#f0eeff;padding:.25rem .625rem;border-radius:var(--radius-sm);display:inline-block;width:fit-content;font-weight:500}.cert-card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:var(--spacing-sm);border-top:1px solid var(--color-border)}.cert-price-info{display:flex;flex-direction:column;align-items:flex-start;gap:2px}.cert-price-current{font-size:var(--font-size-lg);font-weight:800;color:#667eea;letter-spacing:-.3px}.cert-apply-btn{font-size:var(--font-size-sm);font-weight:700;color:#667eea;white-space:nowrap;padding:.375rem .75rem;border:1.5px solid #667eea;border-radius:var(--radius-sm);transition:var(--transition-base)}.cert-card-home:hover .cert-apply-btn{background:#667eea;color:#fff}.btn-outline-cert{background:transparent;color:#667eea;border:2px solid #667eea;display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-md) var(--spacing-xl);border-radius:var(--radius-md);font-size:var(--font-size-base);font-weight:600;text-decoration:none;transition:var(--transition-base);cursor:pointer;font-family:inherit}.btn-outline-cert:hover{background:#667eea;color:#fff;transform:translateY(-2px);box-shadow:0 10px 15px #667eea4d}.section-cert{background:inherit}.nav-link-cert{color:#6b7280;font-weight:500;position:relative}.nav-link-cert:after{content:"";position:absolute;bottom:-4px;left:0;width:100%;height:2px;background:#667eea;border-radius:2px;transform:scaleX(0);transition:transform .2s ease}.nav-link-cert:hover:after{transform:scaleX(1)}.nav-link-cert:hover{color:#667eea}@media(max-width:768px){.cert-grid{grid-template-columns:1fr}.cert-thumbnail-wrapper{height:160px}.cert-info-row{gap:var(--spacing-sm)}}@media(max-width:480px){.cert-card-title{font-size:var(--font-size-base)}}.signup-wrapper{min-height:calc(100vh - 160px);display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl, 2rem) var(--spacing-lg, 1rem);background-color:var(--color-background, #ffffff)}.signup-container{width:100%;max-width:500px;background:#fff;border-radius:var(--radius-lg, 12px);box-shadow:var(--shadow-lg, 0 4px 6px rgba(0, 0, 0, .1));padding:var(--spacing-2xl, 2rem)}.signup-title{font-size:var(--font-size-2xl, 1.875rem);font-weight:var(--font-weight-bold, 700);color:var(--color-primary, #1e3a8a);text-align:center;margin-bottom:var(--spacing-2xl, 2rem)}.signup-form{display:flex;flex-direction:column;gap:var(--spacing-lg, 1rem)}.form-item input[type=text],.form-item input[type=email],.form-item input[type=tel],.form-item input[type=password]{width:100%;padding:var(--spacing-md, .75rem);border:1px solid var(--color-border, #d1d5db);border-radius:var(--radius-md, 8px);font-size:var(--font-size-base, 1rem);transition:var(--transition-base, all .2s ease)}.email-check-wrapper{display:flex;gap:var(--spacing-sm, .5rem);align-items:stretch}.email-check-wrapper input{flex:1;min-width:0}.email-check-wrapper input.locked{background-color:var(--color-background-light, #f8f9fa);color:var(--color-text-secondary, #6b7280);cursor:not-allowed;border-color:var(--color-border, #d1d5db)}.check-button{flex-shrink:0;min-width:90px;padding:var(--spacing-md, .75rem) var(--spacing-lg, 1rem);background-color:var(--color-primary, #1e3a8a);color:#fff;border:none;border-radius:var(--radius-md, 8px);font-size:var(--font-size-sm, .875rem);font-weight:var(--font-weight-medium, 500);cursor:pointer;transition:var(--transition-base, all .2s ease);white-space:nowrap}.check-button:hover:not(:disabled){background-color:var(--color-primary-dark, #1e40af);transform:translateY(-1px);box-shadow:var(--shadow-md, 0 2px 4px rgba(0, 0, 0, .1))}.check-button:disabled{background-color:var(--color-border, #d1d5db);cursor:not-allowed;transform:none}.check-button.edit-button{background-color:var(--color-secondary, #f59e0b);color:#fff}.check-button.edit-button:hover:not(:disabled){background-color:#d97706}.checkbox-group{display:flex;flex-direction:column;gap:var(--spacing-sm, .5rem);padding:var(--spacing-lg, 1rem);background-color:var(--color-background-light, #f9fafb);border-radius:var(--radius-md, 8px)}.checkbox-label{display:flex;align-items:center;gap:var(--spacing-sm, .5rem);font-size:var(--font-size-sm, .875rem);color:var(--color-text-primary, #1f2937);cursor:pointer}.checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer}.checkbox-label input[type=checkbox]:disabled{cursor:not-allowed}.checkbox-label:first-child{font-weight:var(--font-weight-semibold, 600);color:var(--color-primary, #1e3a8a)}.checkbox-divider{height:1px;background-color:var(--color-border, #e5e7eb);margin:var(--spacing-xs, .25rem) 0}.success-message{display:block;color:var(--color-success, #10b981);font-size:var(--font-size-sm, .875rem);margin-top:var(--spacing-xs, .25rem);font-weight:var(--font-weight-medium, 500)}.success-message:before{content:"✓ ";font-weight:700}.signup-footer{margin-top:var(--spacing-xl, 1.5rem);text-align:center;font-size:var(--font-size-sm, .875rem);color:var(--color-text-secondary, #6b7280)}.signup-footer a{color:var(--color-primary, #1e3a8a);text-decoration:none;font-weight:var(--font-weight-medium, 500);transition:color .2s}.signup-footer a:hover{color:var(--color-primary-dark, #1e40af);text-decoration:underline}@media(max-width:768px){.signup-wrapper{padding:var(--spacing-lg, 1rem)}.signup-container{padding:var(--spacing-xl, 1.5rem)}.signup-title{font-size:var(--font-size-xl, 1.5rem)}.check-button{padding:12px var(--spacing-md, .75rem);font-size:var(--font-size-xs, .75rem);min-width:70px}}@media(max-width:480px){.signup-wrapper{padding:var(--spacing-md, .75rem)}.signup-container{padding:var(--spacing-lg, 1rem);box-shadow:none}.signup-title{font-size:var(--font-size-lg, 1.25rem);margin-bottom:var(--spacing-lg, 1rem)}.form-item input{font-size:var(--font-size-sm, .875rem);padding:var(--spacing-sm, .625rem)}.check-button{padding:10px var(--spacing-sm, .5rem);font-size:var(--font-size-xs, .75rem);min-width:60px}.submit-button{padding:var(--spacing-md, .75rem)}}.login-wrapper{min-height:calc(100vh - 160px);display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl, 2rem) var(--spacing-lg, 1rem);background-color:var(--color-background, #ffffff)}.login-container{width:100%;max-width:450px;background:#fff;border-radius:var(--radius-lg, 12px);box-shadow:var(--shadow-lg, 0 4px 6px rgba(0, 0, 0, .1));padding:var(--spacing-2xl, 2rem)}.login-title{font-size:var(--font-size-2xl, 1.875rem);font-weight:var(--font-weight-bold, 700);color:var(--color-primary, #1e3a8a);text-align:center;margin-bottom:var(--spacing-2xl, 2rem)}.login-form{display:flex;flex-direction:column;gap:var(--spacing-lg, 1rem)}.form-item input[type=email],.form-item input[type=password]{width:100%;padding:var(--spacing-md, .75rem);border:1px solid var(--color-border, #d1d5db);border-radius:var(--radius-md, 8px);font-size:var(--font-size-base, 1rem);transition:var(--transition-base, all .2s ease)}.password-wrapper{position:relative;display:flex;align-items:center}.password-wrapper input{flex:1;padding-right:3rem}.password-toggle{position:absolute;right:var(--spacing-md, .75rem);background:none;border:none;cursor:pointer;font-size:1.25rem;padding:var(--spacing-xs, .25rem);opacity:.6;transition:opacity .2s}.password-toggle:hover{opacity:1}.password-toggle:disabled{cursor:not-allowed;opacity:.3}.form-options{display:flex;justify-content:space-between;align-items:center;margin-top:var(--spacing-xs, .25rem)}.remember-me{display:flex;align-items:center;gap:var(--spacing-xs, .5rem);font-size:var(--font-size-sm, .875rem);color:var(--color-text-primary, #1f2937);cursor:pointer}.remember-me input[type=checkbox]{width:16px;height:16px;cursor:pointer}.remember-me input[type=checkbox]:disabled{cursor:not-allowed}.forgot-password{font-size:var(--font-size-sm, .875rem);color:var(--color-primary, #1e3a8a);text-decoration:none;font-weight:var(--font-weight-medium, 500);transition:color .2s}.forgot-password:hover{color:var(--color-primary-dark, #1e40af);text-decoration:underline}.login-footer{margin-top:var(--spacing-xl, 1.5rem);text-align:center;font-size:var(--font-size-sm, .875rem);color:var(--color-text-secondary, #6b7280)}.login-footer a{color:var(--color-primary, #1e3a8a);text-decoration:none;font-weight:var(--font-weight-medium, 500);transition:color .2s}.login-footer a:hover{color:var(--color-primary-dark, #1e40af);text-decoration:underline}@media(max-width:768px){.login-wrapper{padding:var(--spacing-lg, 1rem)}.login-container{padding:var(--spacing-xl, 1.5rem)}.login-title{font-size:var(--font-size-xl, 1.5rem)}}@media(max-width:480px){.login-wrapper{padding:var(--spacing-md, .75rem)}.login-container{padding:var(--spacing-lg, 1rem);box-shadow:none}.login-title{font-size:var(--font-size-lg, 1.25rem);margin-bottom:var(--spacing-lg, 1rem)}.form-item input{font-size:var(--font-size-sm, .875rem);padding:var(--spacing-sm, .625rem)}.submit-button{padding:var(--spacing-md, .75rem)}.form-options{flex-direction:column;gap:var(--spacing-sm, .5rem);align-items:flex-start}}.forgot-password-wrapper{min-height:calc(100vh - 160px);display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl, 2rem) var(--spacing-lg, 1rem);background-color:var(--color-background, #ffffff)}.forgot-password-container{width:100%;max-width:450px;background:#fff;border-radius:var(--radius-lg, 12px);box-shadow:var(--shadow-lg, 0 4px 6px rgba(0, 0, 0, .1));padding:var(--spacing-2xl, 2rem)}.forgot-password-title{font-size:var(--font-size-2xl, 1.875rem);font-weight:var(--font-weight-bold, 700);color:var(--color-primary, #1e3a8a);text-align:center;margin-bottom:var(--spacing-lg, 1rem)}.forgot-password-description{text-align:center;color:var(--color-text-secondary, #6b7280);font-size:var(--font-size-sm, .875rem);line-height:1.6;margin-bottom:var(--spacing-xl, 1.5rem)}.forgot-password-form{display:flex;flex-direction:column;gap:var(--spacing-lg, 1rem)}.form-item{display:flex;flex-direction:column;gap:var(--spacing-xs, .5rem)}.form-item label{font-size:var(--font-size-sm, .875rem);font-weight:var(--font-weight-medium, 500);color:var(--color-text-primary, #1f2937)}.form-item input[type=email]{width:100%;padding:var(--spacing-md, .75rem);border:1px solid var(--color-border, #d1d5db);border-radius:var(--radius-md, 8px);font-size:var(--font-size-base, 1rem);transition:var(--transition-base, all .2s ease)}.form-item input:focus{outline:none;border-color:var(--color-primary, #1e3a8a);box-shadow:0 0 0 3px #1e3a8a1a}.form-item input:disabled{background-color:var(--color-background-light, #f3f4f6);cursor:not-allowed}.error-message{display:block;color:var(--color-error, #ef4444);font-size:var(--font-size-sm, .875rem);margin-top:var(--spacing-xs, .25rem)}.submit-button{width:100%;padding:var(--spacing-lg, 1rem);background-color:var(--color-primary, #1e3a8a);color:#fff;border:none;border-radius:var(--radius-md, 8px);font-size:var(--font-size-base, 1rem);font-weight:var(--font-weight-semibold, 600);cursor:pointer;transition:var(--transition-base, all .2s ease);margin-top:var(--spacing-md, .75rem)}.submit-button:hover:not(:disabled){background-color:var(--color-primary-dark, #1e40af);transform:translateY(-2px);box-shadow:var(--shadow-lg, 0 4px 8px rgba(0, 0, 0, .15))}.submit-button:disabled{background-color:var(--color-border, #d1d5db);cursor:not-allowed;transform:none}.forgot-password-footer{margin-top:var(--spacing-xl, 1.5rem);text-align:center}.back-to-login{font-size:var(--font-size-sm, .875rem);color:var(--color-primary, #1e3a8a);text-decoration:none;font-weight:var(--font-weight-medium, 500);transition:color .2s}.back-to-login:hover{color:var(--color-primary-dark, #1e40af);text-decoration:underline}.success-icon{font-size:4rem;text-align:center;margin-bottom:var(--spacing-lg, 1rem)}.success-message-box{background-color:var(--color-background-light, #f0fdf4);border:1px solid #86efac;border-radius:var(--radius-md, 8px);padding:var(--spacing-lg, 1rem);margin-bottom:var(--spacing-xl, 1.5rem)}.success-description{text-align:center;color:var(--color-text-primary, #1f2937);font-size:var(--font-size-base, 1rem);line-height:1.6;margin-bottom:var(--spacing-md, .75rem)}.success-description strong{color:var(--color-primary, #1e3a8a);font-weight:var(--font-weight-semibold, 600)}.success-note{text-align:center;color:var(--color-text-secondary, #6b7280);font-size:var(--font-size-sm, .875rem);line-height:1.5}.success-actions{display:flex;flex-direction:column;gap:var(--spacing-md, .75rem)}.back-to-login-button{display:block;width:100%;padding:var(--spacing-lg, 1rem);background-color:var(--color-primary, #1e3a8a);color:#fff;border:none;border-radius:var(--radius-md, 8px);font-size:var(--font-size-base, 1rem);font-weight:var(--font-weight-semibold, 600);text-align:center;text-decoration:none;cursor:pointer;transition:var(--transition-base, all .2s ease)}.back-to-login-button:hover{background-color:var(--color-primary-dark, #1e40af);transform:translateY(-2px);box-shadow:var(--shadow-lg, 0 4px 8px rgba(0, 0, 0, .15))}.resend-button{width:100%;padding:var(--spacing-lg, 1rem);background-color:transparent;color:var(--color-primary, #1e3a8a);border:2px solid var(--color-primary, #1e3a8a);border-radius:var(--radius-md, 8px);font-size:var(--font-size-base, 1rem);font-weight:var(--font-weight-semibold, 600);cursor:pointer;transition:var(--transition-base, all .2s ease)}.resend-button:hover{background-color:var(--color-primary, #1e3a8a);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-lg, 0 4px 8px rgba(0, 0, 0, .15))}@media(max-width:768px){.forgot-password-wrapper{padding:var(--spacing-lg, 1rem)}.forgot-password-container{padding:var(--spacing-xl, 1.5rem)}.forgot-password-title{font-size:var(--font-size-xl, 1.5rem)}}@media(max-width:480px){.forgot-password-wrapper{padding:var(--spacing-md, .75rem)}.forgot-password-container{padding:var(--spacing-lg, 1rem);box-shadow:none}.forgot-password-title{font-size:var(--font-size-lg, 1.25rem);margin-bottom:var(--spacing-md, .75rem)}.success-icon{font-size:3rem}.form-item input{font-size:var(--font-size-sm, .875rem);padding:var(--spacing-sm, .625rem)}.submit-button,.back-to-login-button,.resend-button{padding:var(--spacing-md, .75rem)}}.course-card{--color-primary: #667eea;--color-text-primary: #1a1a1a;--color-text-secondary: #4a5568;--color-text-muted: #718096;--color-bg-white: #ffffff;--color-border: #e2e8f0;--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .12);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-full: 9999px;--transition: all .3s cubic-bezier(.4, 0, .2, 1);background:var(--color-bg-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:var(--transition);cursor:pointer;display:flex;flex-direction:column;height:100%;border:1px solid var(--color-border)}.course-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:#667eea}.course-thumbnail-wrapper{position:relative;width:100%;height:200px;overflow:hidden;background:#f8f9fa;flex-shrink:0}.course-thumbnail-img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s ease}.course-card:hover .course-thumbnail-img{transform:scale(1.08)}.thumbnail-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:1rem;font-weight:600}.badge-overlay{position:absolute;top:1rem;left:1rem;right:1rem;display:flex;justify-content:space-between;align-items:flex-start}.badge-right{display:flex;flex-direction:column;gap:.375rem;align-items:flex-end}.discount-tag{padding:.375rem .75rem;background:#dc2626f2;color:#fff;border-radius:var(--radius-sm);font-size:.75rem;font-weight:700;box-shadow:0 1px 3px #00000026}.free-tag{padding:.375rem 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auto}.ip-logo{font-size:22px;font-weight:700;margin-bottom:8px}.ip-list-desc{font-size:14px;opacity:.85;margin:0}.ip-list-body{max-width:1100px;margin:0 auto;padding:32px 24px}.ip-list-search-wrap{margin-bottom:24px}.ip-list-search{width:100%;max-width:400px;padding:10px 16px;border:1.5px solid var(--ip-border);border-radius:8px;font-size:14px;outline:none;transition:border-color .2s}.ip-list-search:focus{border-color:var(--ip-primary)}.ip-course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}.ip-course-card{background:var(--ip-card-bg);border-radius:var(--ip-radius);box-shadow:var(--ip-shadow);cursor:pointer;overflow:hidden;transition:box-shadow .25s,transform .25s;border:2px solid transparent}.ip-course-card:hover{box-shadow:var(--ip-shadow-hover);transform:translateY(-3px)}.ip-course-card.authed{border-color:#22c55e}.ip-card-thumb-wrap{position:relative;aspect-ratio:16/9;background:#e2e8f0;overflow:hidden}.ip-card-thumb{width:100%;height:100%;object-fit:cover}.ip-card-thumb-placeholder{display:flex;align-items:center;justify-content:center;height:100%;font-size:32px;color:#94a3b8}.ip-card-thumb-wrap .ip-badge{position:absolute;top:8px;left:8px}.ip-authed-badge{position:absolute;top:8px;right:8px;background:#22c55e;color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:20px}.ip-card-body{padding:14px 16px}.ip-card-title{font-size:15px;font-weight:700;color:var(--ip-text);margin:0 0 6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.ip-card-instructor{font-size:13px;color:var(--ip-text-muted);margin:0 0 10px}.ip-card-stats{display:flex;gap:12px;font-size:12px;color:var(--ip-text-muted)}.ip-modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:16px}.ip-modal{background:#fff;border-radius:16px;padding:32px;width:100%;max-width:440px;position:relative;box-shadow:0 20px 60px #0003;animation:modal-in .2s ease}@keyframes modal-in{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.ip-modal-close{position:absolute;top:16px;right:16px;background:none;border:none;font-size:18px;cursor:pointer;color:var(--ip-text-muted)}.ip-modal-title{font-size:20px;font-weight:700;color:var(--ip-text);margin:0 0 20px}.ip-modal-course{display:flex;gap:12px;align-items:center;background:#f8fafc;border-radius:10px;padding:12px;margin-bottom:24px}.ip-modal-thumb{width:64px;height:48px;object-fit:cover;border-radius:6px;flex-shrink:0}.ip-modal-course-title{font-size:14px;font-weight:600;color:var(--ip-text);margin:0 0 4px}.ip-modal-course-inst{font-size:12px;color:var(--ip-text-muted);margin:0}.ip-pw-form{display:flex;flex-direction:column;gap:12px}.ip-pw-label{font-size:13px;font-weight:600;color:var(--ip-text)}.ip-pw-input-wrap{position:relative}.ip-pw-input{width:100%;padding:11px 44px 11px 14px;border:1.5px solid var(--ip-border);border-radius:8px;font-size:14px;outline:none;transition:border-color .2s;box-sizing:border-box}.ip-pw-input:focus{border-color:var(--ip-primary)}.ip-pw-input.error{border-color:#ef4444}.ip-pw-toggle{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;font-size:16px}.ip-pw-error{font-size:12px;color:#ef4444;margin:0}.ip-pw-submit{background:var(--ip-primary);color:#fff;border:none;border-radius:8px;padding:12px;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s}.ip-pw-submit:hover:not(:disabled){background:var(--ip-primary-dark)}.ip-pw-submit:disabled{opacity:.6;cursor:not-allowed}.ip-header{background:#1e3a5f;color:#fff;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}.ip-header-left{display:flex;align-items:center;gap:16px;min-width:0}.ip-back-btn{background:#ffffff26;border:none;color:#fff;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:13px;white-space:nowrap;transition:background .2s}.ip-back-btn:hover{background:#ffffff40}.ip-header-course{display:flex;align-items:center;gap:10px;min-width:0}.ip-header-title{font-size:15px;font-weight:600;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ip-header-right{display:flex;align-items:center;gap:12px;flex-shrink:0}.ip-header-instructor{font-size:13px;opacity:.8}.ip-logout-btn{background:#ffffff26;border:1px solid rgba(255,255,255,.3);color:#fff;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:13px;transition:background .2s}.ip-logout-btn:hover{background:#ffffff40}.ip-tabs{display:flex;border-bottom:2px solid var(--ip-border);background:#fff;padding:0 24px}.ip-tab{background:none;border:none;padding:14px 20px;font-size:14px;font-weight:600;cursor:pointer;color:var(--ip-text-muted);border-bottom:3px solid transparent;margin-bottom:-2px;transition:color .2s,border-color .2s;display:flex;align-items:center;gap:6px}.ip-tab.active{color:var(--ip-primary);border-bottom-color:var(--ip-primary)}.ip-tab-badge{background:#ef4444;color:#fff;font-size:11px;font-weight:700;padding:1px 6px;border-radius:10px}.ip-qna-wrap{max-width:860px;margin:0 auto;padding:28px 24px}.ip-qna-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:20px}.ip-filter-btns{display:flex;gap:8px}.ip-filter-btn{background:#f1f5f9;border:1.5px solid var(--ip-border);border-radius:6px;padding:6px 14px;font-size:13px;cursor:pointer;transition:all .2s}.ip-filter-btn.active{background:var(--ip-primary);color:#fff;border-color:var(--ip-primary)}.ip-search{padding:8px 14px;border:1.5px solid var(--ip-border);border-radius:6px;font-size:13px;outline:none;min-width:220px;transition:border-color .2s}.ip-search:focus{border-color:var(--ip-primary)}.ip-qna-list{display:flex;flex-direction:column;gap:12px}.ip-qna-item{background:#fff;border:1.5px solid var(--ip-border);border-radius:10px;overflow:hidden;transition:border-color .2s}.ip-qna-item.open{border-color:var(--ip-primary)}.ip-qna-header{display:grid;grid-template-columns:1fr auto;align-items:start;gap:12px;padding:16px;cursor:pointer}.ip-qna-meta{grid-column:1;display:flex;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap}.ip-qna-status{font-size:11px;font-weight:700;padding:2px 8px;border-radius:20px}.ip-qna-status.answered{background:#dcfce7;color:#16a34a}.ip-qna-status.unanswered{background:#fef3c7;color:#d97706}.ip-qna-user{font-size:12px;color:var(--ip-text-muted)}.ip-qna-date{font-size:12px;color:var(--ip-text-muted);margin-left:auto}.ip-qna-question{grid-column:1;font-size:14px;color:var(--ip-text);margin:0;line-height:1.6}.ip-qna-arrow{color:var(--ip-text-muted);font-size:12px;padding-top:4px}.ip-qna-body{border-top:1.5px solid var(--ip-border);padding:16px;background:#f8fafc;display:flex;flex-direction:column;gap:12px}.ip-prev-answer{background:#fff;border-left:3px solid #22c55e;padding:10px 14px;border-radius:0 8px 8px 0;font-size:13px;color:var(--ip-text)}.ip-prev-answer strong{display:block;margin-bottom:6px;font-size:12px;color:#16a34a}.ip-answer-input{width:100%;padding:12px;border:1.5px solid var(--ip-border);border-radius:8px;font-size:14px;resize:vertical;font-family:inherit;outline:none;transition:border-color .2s;box-sizing:border-box}.ip-answer-input:focus{border-color:var(--ip-primary)}.ip-answer-actions{display:flex;justify-content:flex-end;gap:8px}.ip-btn-cancel{background:#f1f5f9;border:1.5px solid var(--ip-border);border-radius:6px;padding:8px 16px;cursor:pointer;font-size:13px}.ip-btn-save{background:var(--ip-primary);color:#fff;border:none;border-radius:6px;padding:8px 20px;cursor:pointer;font-size:13px;font-weight:600;transition:background .2s}.ip-btn-save:hover:not(:disabled){background:var(--ip-primary-dark)}.ip-btn-save:disabled{opacity:.6;cursor:not-allowed}.ip-info-wrap{max-width:860px;margin:0 auto;padding:28px 24px;display:flex;flex-direction:column;gap:24px}.ip-info-grid{display:grid;grid-template-columns:260px 1fr;gap:24px}@media(max-width:640px){.ip-info-grid{grid-template-columns:1fr}}.ip-info-thumb{width:100%;border-radius:10px;object-fit:cover}.ip-info-title{font-size:20px;font-weight:700;margin:0 0 8px}.ip-info-sub{font-size:14px;color:var(--ip-text-muted);margin:0 0 16px}.ip-info-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--ip-border);font-size:14px}.ip-info-row span:first-child{color:var(--ip-text-muted)}.ip-price-disc{color:#ef4444;font-weight:600}.ip-info-desc,.ip-info-section,.ip-info-notice{background:#fff;border-radius:10px;padding:20px;box-shadow:var(--ip-shadow)}.ip-info-desc h3,.ip-info-section h3,.ip-info-notice h3{font-size:16px;font-weight:700;margin:0 0 12px}.ip-info-desc p{font-size:14px;line-height:1.7;color:var(--ip-text);margin:0}.ip-info-section ul{margin:0;padding-left:20px}.ip-info-section li{font-size:14px;color:var(--ip-text);line-height:1.7}.ip-info-notice{background:#fffbeb;border-left:4px solid #f59e0b}@media(max-width:768px){.ip-course-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.ip-header{padding:0 16px}.ip-header-title,.ip-header-instructor{display:none}.ip-qna-toolbar{flex-direction:column;align-items:flex-start}.ip-search{min-width:unset;width:100%}}.ip-tabs{gap:0}.ip-students-wrap{max-width:1100px;margin:0 auto;padding:28px 24px}.ip-kpi-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:14px;margin-bottom:28px}.ip-kpi-card{background:#fff;border-radius:12px;padding:18px 14px;text-align:center;box-shadow:0 2px 8px #00000012;border-top:3px solid #e2e8f0;transition:transform .2s}.ip-kpi-card:hover{transform:translateY(-2px)}.ip-kpi-card.accent-green{border-top-color:#22c55e}.ip-kpi-card.accent-blue{border-top-color:#3b82f6}.ip-kpi-card.accent-red{border-top-color:#ef4444}.ip-kpi-card.accent-yellow{border-top-color:#f59e0b}.ip-kpi-card.accent-gray{border-top-color:#94a3b8}.ip-kpi-card.accent-purple{border-top-color:#a855f7}.ip-kpi-card.accent-teal{border-top-color:#14b8a6}.ip-kpi-icon{font-size:22px;display:block;margin-bottom:8px}.ip-kpi-val{font-size:28px;font-weight:800;color:#1e293b;line-height:1}.ip-kpi-label{font-size:12px;color:#64748b;margin-top:4px;font-weight:500}.ip-progress-summary{background:#fff;border-radius:12px;padding:20px 24px;box-shadow:0 2px 8px #00000012;margin-bottom:28px}.ip-ps-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.ip-ps-title{font-size:15px;font-weight:700;color:#1e293b}.ip-ps-avg{font-size:13px;color:#64748b}.ip-ps-avg strong{color:#3b82f6;font-size:16px}.ip-ps-bars{display:flex;flex-direction:column;gap:12px}.ip-ps-bar-row{display:grid;grid-template-columns:120px 1fr 100px;align-items:center;gap:12px}.ip-ps-bar-label{font-size:13px;color:#475569;text-align:right}.ip-ps-bar-track{height:10px;background:#f1f5f9;border-radius:99px;overflow:hidden}.ip-ps-bar-fill{height:100%;border-radius:99px;transition:width .5s ease}.ip-ps-bar-fill.green{background:#22c55e}.ip-ps-bar-fill.blue{background:#3b82f6}.ip-ps-bar-fill.purple{background:#a855f7}.ip-ps-bar-val{font-size:12px;color:#64748b}.ip-stud-section{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 8px #00000012}.ip-stud-toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-bottom:16px}.ip-stud-table-wrap{overflow-x:auto}.ip-stud-table{width:100%;border-collapse:collapse;font-size:13px;min-width:700px}.ip-stud-table thead tr{background:#f8fafc}.ip-stud-table th{padding:10px 12px;text-align:left;font-weight:600;color:#475569;border-bottom:2px solid #e2e8f0;white-space:nowrap}.ip-stud-table td{padding:10px 12px;border-bottom:1px solid #f1f5f9;vertical-align:middle}.ip-stud-table tbody tr:hover{background:#f8fafc}.ip-th-sortable{cursor:pointer;-webkit-user-select:none;user-select:none}.ip-th-sortable:hover{color:#3b82f6}.ip-stud-name{display:flex;align-items:center;gap:8px;white-space:nowrap}.ip-stud-email{color:#64748b;font-size:12px}.ip-st-badge{font-size:11px;font-weight:700;padding:2px 8px;border-radius:20px;white-space:nowrap}.ip-st-badge.confirmed{background:#dcfce7;color:#16a34a}.ip-st-badge.free{background:#dbeafe;color:#1d4ed8}.ip-st-badge.refunded{background:#fee2e2;color:#dc2626}.ip-st-badge.refund-req{background:#fef3c7;color:#d97706}.ip-st-badge.cancelled{background:#f1f5f9;color:#64748b}.ip-st-badge.completed{background:#f3e8ff;color:#7c3aed}.ip-prog-wrap{display:flex;align-items:center;gap:8px;min-width:100px}.ip-prog-bar-track{flex:1;height:6px;background:#e2e8f0;border-radius:99px;overflow:hidden}.ip-prog-bar-fill{height:100%;border-radius:99px;transition:width .4s ease}.ip-prog-pct{font-size:12px;color:#475569;min-width:32px;text-align:right}.ip-stud-count{font-size:12px;color:#94a3b8;text-align:right;margin:10px 0 0}@media(max-width:768px){.ip-kpi-grid{grid-template-columns:repeat(4,1fr)}.ip-ps-bar-row{grid-template-columns:80px 1fr 70px}.ip-stud-toolbar{flex-direction:column;align-items:flex-start}}@media(max-width:480px){.ip-kpi-grid{grid-template-columns:repeat(2,1fr)}}.cl-main{min-height:calc(100vh - 140px);background:#f8fafc}.cl-hero{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;text-align:center;padding:60px 24px 48px}.cl-hero-title{font-size:2rem;font-weight:800;margin-bottom:10px}.cl-hero-sub{font-size:1rem;opacity:.85}.cl-container{max-width:1200px;margin:0 auto;padding:40px 24px 60px}.cl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.cl-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 2px 12px #00000012;cursor:pointer;transition:transform .2s,box-shadow .2s}.cl-card:hover{transform:translateY(-4px);box-shadow:0 8px 28px #4f46e526}.cl-card-thumb{position:relative;width:100%;aspect-ratio:16/9;background:#e0e7ff;overflow:hidden}.cl-card-thumb img{width:100%;height:100%;object-fit:cover}.cl-card-thumb-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:3rem}.cl-purchased-badge{position:absolute;top:10px;right:10px;background:#10b981;color:#fff;font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:20px}.cl-card-body{padding:18px}.cl-card-title{font-size:1rem;font-weight:700;color:#1a1a2e;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.cl-card-desc{font-size:.82rem;color:#64748b;line-height:1.5;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.cl-card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}.cl-tag{display:inline-block;padding:3px 10px;border-radius:20px;font-size:.72rem;font-weight:600}.cl-tag-blue{background:#dbeafe;color:#1e40af}.cl-tag-red{background:#fee2e2;color:#991b1b}.cl-tag-purple{background:#ede9fe;color:#5b21b6}.cl-tag-green{background:#dcfce7;color:#166534}.cl-tag-gray{background:#f1f5f9;color:#475569}.cl-card-price{display:flex;align-items:baseline;gap:8px}.cl-original-price{font-size:.8rem;color:#94a3b8;text-decoration:line-through}.cl-final-price{font-size:1.1rem;font-weight:700;color:#4f46e5}.cl-loading,.cl-empty{text-align:center;padding:80px 20px;color:#94a3b8;font-size:1rem}@media(max-width:640px){.cl-hero-title{font-size:1.5rem}.cl-grid{grid-template-columns:1fr}}.admin-layout{display:flex;min-height:100vh;background-color:#f5f7fa}.admin-sidebar{position:fixed;left:0;top:0;width:260px;height:100vh;background:linear-gradient(180deg,#1e40af,#1e3a8a);color:#fff;display:flex;flex-direction:column;box-shadow:2px 0 10px #0000001a;z-index:100}.admin-logo{padding:2rem 1.5rem;border-bottom:1px solid rgba(255,255,255,.1)}.admin-logo h2{margin:0;font-size:1.5rem;color:#fff}.admin-logo a{text-decoration:none;color:#fff}.admin-nav{flex:1;padding:1rem 0;overflow-y:auto}.admin-nav-item{display:flex;align-items:center;gap:1rem;padding:.85rem 1.5rem;color:#fffc;text-decoration:none;transition:all .2s;border-left:3px solid transparent;font-size:.95rem}.admin-nav-item:hover{background-color:#ffffff1a;color:#fff}.admin-nav-item.active{background-color:#ffffff26;color:#fff;border-left-color:#60a5fa;font-weight:600}.admin-nav-section{border-top:1px solid rgba(255,255,255,.06)}.admin-nav-group{width:100%;display:flex;align-items:center;justify-content:space-between;padding:.85rem 1.5rem;background:none;border:none;border-left:3px solid transparent;color:#ffffffe6;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s;text-align:left;letter-spacing:.01em}.admin-nav-group:hover{background-color:#ffffff1a;color:#fff}.admin-nav-group.open{background-color:#ffffff1a;color:#fff;border-left-color:#60a5fa80}.nav-arrow{font-size:.75rem;opacity:.7;transition:transform .2s}.admin-nav-children{background:#00000026;padding:.25rem 0}.admin-nav-child{display:block;padding:.65rem 1.5rem .65rem 2.5rem;color:#ffffffa6;text-decoration:none;font-size:.875rem;border-left:3px solid transparent;transition:all .15s;position:relative}.admin-nav-child:before{content:"";position:absolute;left:1.5rem;top:50%;transform:translateY(-50%);width:5px;height:5px;border-radius:50%;background:#ffffff4d;transition:background 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