:root{--color-primary: #6b46c1;--color-primary-dark: #553c9a;--color-secondary: #9f7aea;--color-background: #f7fafc;--color-background-light: #ffffff;--color-text: #2d3748;--color-text-light: #718096;--color-border: #e2e8f0;--color-purple-gradient-start: #6b46c1;--color-purple-gradient-end: #9f7aea;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--border-radius-sm: 4px;--border-radius: 8px;--border-radius-lg: 12px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--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);--transition-fast: .15s ease-in-out;--transition-base: .2s ease-in-out;--transition-slow: .3s ease-in-out}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--color-text);background-color:var(--color-background);min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:var(--line-height-tight);margin-bottom:var(--spacing-md)}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}h3{font-size:var(--font-size-xl)}p{margin-bottom:var(--spacing-md)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark);text-decoration:underline}a:focus{outline:2px solid var(--color-primary);outline-offset:2px}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}button:focus,input:focus,select:focus,textarea:focus{outline:2px solid var(--color-primary);outline-offset:2px}.header{background:linear-gradient(135deg,var(--color-purple-gradient-start) 0%,var(--color-purple-gradient-end) 100%);padding:var(--spacing-lg) 0;color:#fff;box-shadow:var(--shadow-md)}.header-content{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-md)}.header-logo{font-size:var(--font-size-2xl);font-weight:700;flex-shrink:0}.header-actions{display:flex;gap:var(--spacing-md);align-items:center;flex-wrap:wrap;justify-content:flex-end}.header-icon{background:none;border:none;font-size:20px;cursor:pointer;transition:opacity var(--transition-fast);padding:var(--spacing-xs);color:#fff;display:flex;align-items:center;justify-content:center}.header-icon:hover{opacity:.8}.auth-status{display:flex;align-items:center;gap:var(--spacing-sm)}.user-info{display:flex;align-items:center}.user-email{font-size:var(--font-size-sm);color:#fff;white-space:nowrap}.auth-button{padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--border-radius-sm);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast);border:none;white-space:nowrap}.login-button{background-color:#fff;color:var(--color-primary)}.login-button:hover{background-color:#ffffffe6}.logout-button{background-color:#fff3;color:#fff;border:1px solid rgba(255,255,255,.3)}.logout-button:hover{background-color:#ffffff4d}.auth-loading{font-size:var(--font-size-sm);color:#fff}.auth-error{font-size:var(--font-size-sm);color:#fcc}.breadcrumb{background-color:var(--color-background-light);padding:var(--spacing-sm) 0;border-bottom:1px solid var(--color-border)}.breadcrumb-text{font-size:var(--font-size-sm);color:var(--color-text-light)}.welcome-section{background-color:var(--color-background-light);padding:var(--spacing-2xl) 0;margin-bottom:var(--spacing-xl)}.welcome-title{font-size:var(--font-size-2xl);margin-bottom:var(--spacing-lg);color:var(--color-text)}.welcome-content{max-width:1200px;margin:0 auto}.welcome-text{margin-bottom:var(--spacing-md);line-height:var(--line-height-relaxed)}.resources-section{margin-top:var(--spacing-lg)}.resources-title{font-weight:600;margin-bottom:var(--spacing-sm)}.resources-list{list-style:none;margin-bottom:var(--spacing-md)}.resources-list li{margin-bottom:var(--spacing-xs)}.service-options{padding:var(--spacing-xl) 0}.service-options-title{font-size:var(--font-size-xl);margin-bottom:var(--spacing-lg)}.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl)}.service-card{background-color:var(--color-background-light);border:1px solid var(--color-border);border-radius:var(--border-radius);padding:var(--spacing-lg);cursor:pointer;transition:all var(--transition-base);display:flex;gap:var(--spacing-md);align-items:flex-start}.service-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary);transform:translateY(-2px)}.service-icon{width:40px;height:40px;flex-shrink:0;background-color:var(--color-background);border-radius:var(--border-radius-sm);display:flex;align-items:center;justify-content:center}.service-content{flex:1}.service-title{font-size:var(--font-size-base);font-weight:600;margin-bottom:var(--spacing-xs);color:var(--color-text)}.service-description{font-size:var(--font-size-sm);color:var(--color-text-light);line-height:var(--line-height-relaxed)}.chat-container{padding:var(--spacing-xl) 0;margin:var(--spacing-xl) 0;width:100%}.chat-wrapper{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.chat-title{font-size:var(--font-size-xl);margin-bottom:var(--spacing-lg);text-align:center;color:var(--color-text)}.iframe-container{position:relative;width:100%;border-radius:var(--border-radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);background-color:#fff;contain:layout style paint}.iframe-loading{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;background-color:var(--color-background);z-index:1}.iframe-loading.hidden{display:none}.loading-spinner{width:40px;height:40px;border:4px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.chat-iframe{display:block;width:100%;height:600px;border:none;overflow:hidden;touch-action:pan-y;overscroll-behavior:contain}@media (max-width: 480px){.chat-iframe{height:400px}}@media (min-width: 481px) and (max-width: 768px){.chat-iframe{height:500px}}@media (min-width: 769px){.chat-iframe{height:600px}}.iframe-error{display:none;padding:var(--spacing-xl);text-align:center;color:var(--color-text-light)}.iframe-error.visible{display:block}@media (max-width: 768px){.header-content{flex-wrap:wrap}.header-logo{font-size:var(--font-size-xl)}.header-actions{width:100%;justify-content:space-between}.user-email{max-width:150px;overflow:hidden;text-overflow:ellipsis}.service-grid{grid-template-columns:1fr}.welcome-section,.service-options,.chat-container{padding:var(--spacing-lg) 0}}@media (min-width: 769px) and (max-width: 1024px){.service-grid{grid-template-columns:repeat(2,1fr)}}