:root{--color-base-inverted:#090909;--color-base-100:#0d1117;--color-base-90:#161b22;--color-base-80:#21262d;--color-base-70:#30363d;--color-base-60:#484f58;--color-base-50:#656c76;--color-base-40:#8b949e;--color-base-30:#b1bac4;--color-base-20:#c9d1d9;--color-base-10:#e6edf3;--color-base-0:#f0f6fc;--color-brand-primary:#3b49df;--color-brand-secondary:#59c5f7;--color-accent-success:#238636;--color-accent-danger:#da3633;--color-accent-warning:#bf8700;--border-radius-s:4px;--border-radius-m:6px;--border-radius-l:8px;--border-radius-xl:12px;--shadow-s:0 1px 3px rgba(0,0,0,.12);--shadow-m:0 4px 6px rgba(0,0,0,.1);--shadow-l:0 10px 25px rgba(0,0,0,.15);--font-family-base:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--font-family-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family-base);background-color:var(--color-base-0);color:var(--color-base-inverted);line-height:1.6;font-size:16px}.layout{min-height:100vh;display:flex;flex-direction:column}.header{background-color:#fff;border-bottom:1px solid var(--color-base-10);box-shadow:var(--shadow-s);position:-webkit-sticky;position:sticky;top:0;z-index:100}.header-content{max-width:1280px;margin:0 auto;padding:12px 16px;justify-content:space-between}.header-content,.logo-section{display:flex;align-items:center}.logo-section{gap:12px}.logo{height:60px;width:auto;border-radius:var(--border-radius-m);object-fit:contain;flex-shrink:0}.site-title{font-size:20px;font-weight:700;color:var(--color-base-inverted);text-decoration:none}.nav{display:flex;gap:24px;align-items:center}.nav-link{color:var(--color-base-40);text-decoration:none;font-weight:500;padding:8px 12px;border-radius:var(--border-radius-m);transition:all .2s ease}.nav-link:hover{color:var(--color-brand-primary);background-color:var(--color-base-10)}.main-content{flex:1 1;max-width:1024px;margin:0 auto;padding:32px 16px;width:100%}.article-container{background:#fff;border-radius:var(--border-radius-l);box-shadow:var(--shadow-s);padding:40px;margin-bottom:24px;border:1px solid var(--color-base-10)}.article-header{margin-bottom:32px;text-align:center}.article-title{font-size:32px;font-weight:800;color:var(--color-base-inverted);margin-bottom:12px;line-height:1.2}.article-subtitle{font-size:20px;color:var(--color-base-40);font-weight:400;margin-bottom:24px}.article-meta{display:flex;justify-content:center;gap:16px;font-size:14px;color:var(--color-base-50)}.form-container{max-width:600px;margin:0 auto}.form-group{margin-bottom:24px}.form-label{display:block;font-weight:600;color:var(--color-base-inverted);margin-bottom:8px;font-size:14px}.form-input,.form-select,.form-textarea{width:100%;max-width:100%;padding:12px 16px;border:2px solid var(--color-base-20);border-radius:var(--border-radius-m);font-family:inherit;font-size:16px;background-color:#fff;color:var(--color-base-inverted);transition:border-color .2s ease,box-shadow .2s ease;box-sizing:border-box}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-brand-primary);box-shadow:0 0 0 3px rgba(59,73,223,.1)}.form-textarea{min-height:120px;resize:vertical;font-family:inherit}.form-input::placeholder,.form-textarea::placeholder{color:var(--color-base-40);font-style:italic}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border:none;border-radius:var(--border-radius-m);font-family:inherit;font-size:16px;font-weight:600;text-decoration:none;cursor:pointer;transition:all .2s ease;min-height:44px}.btn-primary{background-color:var(--color-brand-primary);color:#fff}.btn-primary:hover{background-color:#2d3aa0;transform:translateY(-1px);box-shadow:var(--shadow-m)}.btn-secondary{background-color:var(--color-base-10);color:var(--color-base-inverted);border:1px solid var(--color-base-20)}.btn-secondary:hover{background-color:var(--color-base-20)}.status-message{padding:16px 20px;border-radius:var(--border-radius-m);margin:24px 0;font-weight:500}.status-success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.status-error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.content h1{font-size:28px;font-weight:700;margin-bottom:16px;color:var(--color-base-inverted)}.content h2{font-size:24px;margin:32px 0 16px}.content h2,.content h3{font-weight:600;color:var(--color-base-inverted)}.content h3{font-size:20px;margin:24px 0 12px}.content p{margin-bottom:16px;color:var(--color-base-30);line-height:1.7}.content ol,.content ul{margin:16px 0;padding-left:24px}.content li{margin-bottom:8px;color:var(--color-base-30)}.content a{color:var(--color-brand-primary);text-decoration:none}.content a:hover{text-decoration:underline}.content strong{font-weight:600}.footer{background-color:var(--color-base-90);color:var(--color-base-30);text-align:center;padding:24px 16px;margin-top:auto}@media (max-width:768px){.header-content{flex-direction:column;gap:16px;padding:16px}.nav{gap:16px}.main-content{padding:16px}.article-container{padding:24px 16px}.article-title{font-size:24px}.article-subtitle{font-size:18px}.nav{flex-wrap:wrap;justify-content:center}}@media (max-width:480px){.logo-section{flex-direction:column;gap:8px;text-align:center}.nav{gap:12px}.nav-link{padding:6px 8px;font-size:14px}}