html,body{max-width:100%;overflow-x:hidden}:root{--bg-color:#f5f9fc;--card-bg:#fff;--text-color:#2c3e50;--secondary-text:#7f8c8d;--accent-blue:#00b7f1;--hover-blue:#00a4d9;--soft-blue:#ebf5fb;--border-color:#e1e8ed;--container-width:1080px}.site-header{background-color:var(--card-bg);border-bottom:1px solid var(--border-color);border-top:4px solid var(--accent-blue);padding:0;position:relative}.header-top{max-width:var(--container-width);justify-content:space-between;align-items:center;margin:0 auto;padding:40px 20px 30px;display:flex;position:relative}.sidebar{color:#333;flex-shrink:0;width:300px;max-width:300px;font-family:Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif}.widget{background-color:var(--card-bg);border-radius:8px;margin-bottom:30px;padding:25px;box-shadow:0 4px 15px #3498db08}.widget-title{color:var(--accent-blue);border-bottom:2px solid var(--soft-blue);letter-spacing:.1em;margin-bottom:20px;padding-bottom:10px;font-family:Montserrat,sans-serif;font-size:.9rem;font-weight:700}.profile-img{object-fit:cover;border-radius:50%;width:80px;height:80px;margin:0 auto 15px;display:block}.profile-text{text-align:center;font-size:.85rem}.site-logo-link{margin-right:20px;text-decoration:none;display:inline-block}.logo-text{letter-spacing:.05em;text-transform:uppercase;color:#333;background-color:#0000;padding:0;font-family:Montserrat,sans-serif;font-size:1.8rem;font-weight:900;transition:opacity .2s;display:block}.logo-text:hover{opacity:.7}.lang-selector{gap:10px;font-family:Montserrat,sans-serif;font-size:.7rem;font-weight:700;display:flex}.lang-selector a{color:var(--secondary-text);border:1px solid var(--border-color);background:#fff;border-radius:4px;padding:4px 10px;text-decoration:none;transition:all .2s}.lang-selector a:hover{color:var(--accent-blue);border-color:var(--accent-blue)}.lang-selector a.active{background:var(--accent-blue);color:#fff;border-color:var(--accent-blue)}.category-nav{border-top:1px solid var(--border-color);background-color:var(--card-bg);padding:0}.category-nav ul{max-width:var(--container-width);justify-content:flex-start;margin:0 auto;padding:0 20px;list-style:none;display:flex}.category-nav a{color:#fff;background-color:var(--accent-blue);letter-spacing:.1em;text-transform:uppercase;padding:15px 25px;font-family:Montserrat,sans-serif;font-size:.75rem;font-weight:700;text-decoration:none;transition:background-color .2s;display:block}.category-nav a:hover,.category-nav a.active{background-color:var(--hover-blue);color:#fff}@media (width<=900px){.main-container{flex-direction:column}.sidebar{width:100%}.info-grid{grid-template-columns:1fr}article{padding:30px 16px}.header-top{text-align:center;flex-direction:column;gap:20px;padding:30px 0}.site-logo-link{margin-right:0}.category-nav ul{flex-wrap:wrap;justify-content:center}}