:root{--golden-accent: #e7ae6e;--golden-accent-dark: #d4965a;--steel-accent: #4a6c90;--steel-accent-dark: #3c5570;--white: white;--black: #000000}#app.golden-light{--primary-color: #5d4037;--secondary-color: #6d4c41;--accent-color: #e7ae6e;--accent-dark: #d4965a;--background-light: #fdf4e7;--background-medium: #f5e6d3;--background-dark: #eddcc4;--surface-light: rgba(253, 244, 231, .95);--surface-medium: rgba(253, 244, 231, .9);--surface-dark: rgba(245, 230, 211, .9);--surface-darker: rgba(237, 220, 196, .9);--surface-darkest: rgba(229, 206, 181, .9);--border-color: rgba(231, 174, 110, .4);--shadow-color: rgba(231, 174, 110, .15);--overlay-color: rgba(231, 174, 110, .1);--footer-bg: rgba(141, 110, 99, .95);--text-color: #5d4037}#app.steel-dark{--primary-color: #ecf0f1;--secondary-color: #d5dbdb;--accent-color: #4a6c90;--accent-dark: #3c5570;--background-light: #2c3e50;--background-medium: #34495e;--background-dark: #1b2631;--surface-light: rgba(44, 62, 80, .95);--surface-medium: rgba(52, 73, 94, .9);--surface-dark: rgba(27, 38, 49, .9);--surface-darker: rgba(21, 30, 39, .9);--surface-darkest: rgba(17, 24, 31, .9);--border-color: rgba(74, 108, 144, .6);--shadow-color: rgba(0, 0, 0, .4);--overlay-color: rgba(74, 108, 144, .2);--footer-bg: rgba(27, 38, 49, .95);--text-color: #ecf0f1}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--text-color);background:linear-gradient(135deg,var(--background-light) 0%,var(--background-medium) 50%,var(--background-dark) 100%);min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:0 20px}.header{background:var(--surface-light);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1rem 0;border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;box-shadow:0 2px 10px var(--shadow-color)}.navigation{display:flex;justify-content:center;align-items:center;margin-bottom:0;padding:1rem 0;position:relative}.nav-links{display:flex;align-items:center;gap:2rem}.theme-toggle{position:absolute;right:0;display:flex;align-items:center}.theme-btn{background:var(--surface-medium);color:var(--text-color);border:1px solid var(--border-color);padding:.6rem;border-radius:50%;font-size:1.2rem;cursor:pointer;font-family:inherit;outline:none;display:flex;align-items:center;justify-content:center;width:40px;height:40px}.theme-btn:hover{border-color:var(--accent-color);background:var(--surface-light)}.theme-btn:focus{border-color:var(--accent-color);box-shadow:0 0 0 2px var(--overlay-color)}.theme-icon{font-size:1.3rem}.nav-link{color:var(--text-color);text-decoration:none;font-weight:500;font-size:1.1rem;padding:.5rem 1rem;border-radius:8px}.nav-link:hover{color:var(--accent-color);background:var(--overlay-color)}.welcome{padding:4rem 0;background:var(--surface-dark)}.welcome h2{font-size:2.2rem;margin-bottom:1.5rem;text-align:center;color:var(--text-color)}.welcome p{font-size:1.1rem;text-align:center;max-width:800px;margin:0 auto 2rem;color:var(--secondary-color);line-height:1.8}.professional-qa{padding:4rem 0;background:var(--surface-light)}.professional-qa h2{font-size:2.5rem;margin-bottom:2rem;text-align:center;color:var(--text-color);font-weight:700}.section-description{text-align:center;color:var(--secondary-color);font-size:1.1rem;margin-bottom:3rem;opacity:.8}.qa-list{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:2rem}.qa-item{background:var(--surface-medium);border:2px solid var(--border-color);border-radius:15px;padding:2rem;transition:all .3s ease;box-shadow:0 5px 20px var(--shadow-color)}.question-header{display:flex;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid var(--border-color)}.question-header h3{flex:1;font-size:1.4rem;color:var(--text-color);margin:0;font-weight:600}.answer-content p{color:var(--secondary-color);line-height:1.7;font-size:1rem;margin:0 0 1rem}.answer-content ul{color:var(--secondary-color);line-height:1.6;font-size:1rem;margin:0;padding-left:1.5rem}.answer-content li{margin-bottom:.7rem}.answer-content li strong{color:var(--text-color);font-weight:600}.contact{padding:4rem 0;background:var(--surface-darkest)}.contact h2{font-size:2.2rem;margin-bottom:2rem;text-align:center;color:var(--text-color)}.contact-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;max-width:1000px;margin:0 auto}.contact-item{background:var(--surface-medium);border:1px solid var(--border-color);border-radius:10px;padding:2rem;text-align:center;transition:all .3s ease;box-shadow:0 4px 15px var(--shadow-color)}.contact-item h3{font-size:1.3rem;color:var(--text-color);margin-bottom:1rem;font-weight:600}.contact-item p{color:var(--secondary-color);line-height:1.7;font-size:1.1rem}.contact-item a{color:var(--accent-color);text-decoration:none;transition:color .3s ease}.contact-item a:hover{color:var(--accent-dark);text-decoration:underline}.footer{background:var(--footer-bg);padding:2rem 0;text-align:center;border-top:1px solid var(--border-color)}.footer p{color:var(--white)}@media (max-width: 768px){.navigation{flex-direction:column;gap:1rem;margin-bottom:0;justify-content:center}.nav-links{gap:1rem;flex-wrap:wrap;justify-content:center}.nav-link{font-size:1rem;padding:.4rem .8rem}.theme-toggle{margin-left:0}.theme-btn{width:36px;height:36px;padding:.5rem}.theme-icon{font-size:1.1rem}.header-content{flex-direction:column;text-align:center;gap:1rem}.header-text h1{font-size:2rem}.welcome h2,.faq h2,.contact h2,.professional-qa h2{font-size:1.8rem}.qa-list{gap:1.5rem}.qa-item{margin:0 1rem;padding:1.5rem}.question-header{flex-direction:column;align-items:flex-start;text-align:left}.question-header .icon{margin-bottom:.5rem;margin-right:0}.question-header h3{font-size:1.2rem}.answer-content p,.answer-content ul{font-size:1rem}.contact-info{grid-template-columns:1fr;gap:1.5rem}.contact-item{padding:1.5rem}.profile-image img{width:100px;height:100px}}