:root{--bg-page:#0d1117;--bg-card:#161b22;--bg-card-hover:#1f242c;--border-color:#30363d;--border-focus:#58a6ff;--text-primary:#f0f6fc;--text-secondary:#8b949e;--text-muted:#6e7681;--accent-blue:#238636;--accent-hover:#2ea043;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-page);color:var(--text-primary);font-family:var(--font-sans);flex-direction:column;min-height:100vh;line-height:1.6;display:flex}a{color:#58a6ff;text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:1100px;margin:0 auto;padding:0 20px}header{border-bottom:1px solid var(--border-color);z-index:100;backdrop-filter:blur(8px);background-color:#0d1117f2;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;height:64px;display:flex}.brand{color:var(--text-primary);align-items:center;gap:10px;font-size:1.25rem;font-weight:700;text-decoration:none;display:flex}.brand-logo{object-fit:contain;border-radius:6px;width:28px;height:28px;display:block}nav{align-items:center;gap:20px;display:flex}.nav-links{gap:20px;list-style:none;display:flex}.nav-links a{color:var(--text-secondary);font-size:.95rem;font-weight:500}.nav-links a:hover,.nav-links a.active{color:var(--text-primary);text-decoration:none}.lang-selector{border-left:1px solid var(--border-color);align-items:center;gap:6px;padding-left:16px;font-size:.85rem;display:flex}.lang-btn{color:var(--text-secondary);border-radius:4px;padding:4px 8px;font-weight:600;text-decoration:none}.lang-btn:hover{color:var(--text-primary);background-color:var(--bg-card);text-decoration:none}.lang-btn.active{color:#f0f6fc;border:1px solid var(--border-color);background-color:#21262d}main{flex:1;padding:48px 0 80px}footer{border-top:1px solid var(--border-color);background-color:var(--bg-card);color:var(--text-secondary);padding:40px 0;font-size:.9rem}.footer-inner{flex-direction:column;gap:20px;display:flex}.footer-top{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:24px;display:flex}.footer-bottom{border-top:1px solid var(--border-color);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-top:20px;font-size:.85rem;display:flex}.footer-links{gap:20px;list-style:none;display:flex}.footer-links a{color:var(--text-secondary)}.footer-links a:hover{color:var(--text-primary)}.badge{color:#58a6ff;background-color:#1f6feb26;border:1px solid #1f6feb66;border-radius:12px;padding:2px 8px;font-size:.75rem;font-weight:600;display:inline-block}.btn{cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:1rem;font-weight:600;text-decoration:none;transition:background-color .15s;display:inline-flex}.btn-primary{background-color:var(--accent-blue);color:#fff}.btn-primary:hover{background-color:var(--accent-hover);text-decoration:none}.btn-secondary{color:var(--text-primary);border:1px solid var(--border-color);background-color:#21262d}.btn-secondary:hover{background-color:#30363d;text-decoration:none}.card-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-top:32px;display:grid}.card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:24px}.card h3{color:var(--text-primary);margin-bottom:12px;font-size:1.2rem}.card p{color:var(--text-secondary);font-size:.95rem}.auth-card{max-width:440px;margin:40px auto;padding:32px}.auth-form{flex-direction:column;gap:16px;margin-top:20px;display:flex}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{color:var(--text-secondary);font-size:.9rem;font-weight:500}.form-group input{background-color:var(--bg-page);border:1px solid var(--border-color);color:var(--text-primary);border-radius:6px;padding:10px 12px;font-family:inherit;font-size:.95rem}.form-group input:focus{border-color:var(--border-focus);outline:none}.auth-message{border-radius:6px;margin-top:12px;padding:12px;font-size:.9rem}.alert-danger{color:#f85149;background-color:#f8514926;border:1px solid #f8514966}.alert-success{color:#3fb950;background-color:#23863626;border:1px solid #23863666}.auth-links{text-align:center;flex-direction:column;gap:8px;margin-top:20px;font-size:.88rem;display:flex}.plan-badge{text-transform:uppercase;border-radius:12px;padding:3px 8px;font-size:.75rem;font-weight:700;display:inline-block}.plan-pro,.plan-lifetime{color:#3fb950;background:#23863633;border:1px solid #23863666}.plan-free{color:#8b949e;border:1px solid var(--border-color);background:#6e768133}.modal-overlay{z-index:1000;background:#000000bf;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;width:90%;max-width:550px;max-height:90vh;padding:24px;position:relative;overflow-y:auto}.modal-close{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;font-size:1.5rem;position:absolute;top:12px;right:16px}.sub-item,.device-item{justify-content:space-between;align-items:center;margin-top:12px;padding:14px 18px;display:flex}.btn-danger{color:#f85149;cursor:pointer;background-color:#f8514926;border:1px solid #f851494d;border-radius:6px;padding:6px 12px;font-size:.85rem}.btn-danger:hover{background-color:#f851494d}@media (width<=768px){.header-inner{flex-direction:column;gap:16px;height:auto;padding:16px 0}.nav-links{flex-wrap:wrap;justify-content:center;gap:12px}.lang-selector{border-left:none;padding-left:0}.footer-top,.footer-bottom{flex-direction:column;align-items:flex-start}}