body.help-page{display:block;height:auto;overflow:auto;min-height:100vh}.help-header{height:48px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;padding:0 16px;background-color:var(--bg-panel);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);position:sticky;top:0;z-index:100}.help-header .logo{display:flex;align-items:center;font-weight:700;text-decoration:none;color:inherit}.help-header .logo:hover{opacity:.9}.help-header .logo-img{height:28px;margin-right:12px}.help-header .logo-text{font-size:16px;margin-right:8px}.help-header .header-sep{width:1px;height:24px;background:var(--border-color);margin:0 16px}.help-header .help-title{font-size:15px;color:var(--text-secondary)}.help-header .lang-switch{margin-left:auto;font-weight:600;font-size:.9rem}.lang-switch .lang-link{color:var(--text-muted, #64748b);text-decoration:none;transition:color .3s ease}.lang-switch .lang-link:hover{color:var(--text-primary, #1e293b)}.help-header .lang-switch .lang-sep{color:var(--text-secondary);opacity:.4}.help-header .lang-switch a{color:var(--text-secondary);text-decoration:none;padding:4px 8px;border-radius:4px;transition:color .2s,background .2s}.help-header .lang-switch a:hover{color:var(--text-primary);background:var(--bg-hover)}.help-header .lang-switch a.active{color:var(--primary-color);font-weight:600}.help-layout{display:flex;max-width:1200px;margin:0 auto;padding:32px 24px;gap:32px}.help-nav{width:220px;flex-shrink:0;position:sticky;top:80px;align-self:flex-start;max-height:calc(100vh - 96px);overflow-y:auto}.help-nav h3{font-size:12px;text-transform:uppercase;color:var(--text-secondary);margin:0 0 12px;letter-spacing:.5px}.help-nav ul{list-style:none;margin:0;padding:0}.help-nav li{margin-bottom:2px}.help-nav a{display:block;padding:6px 12px;color:var(--text-secondary);text-decoration:none;font-size:13px;border-radius:4px;border-left:2px solid transparent;transition:all .2s}.help-nav a:hover{color:var(--text-primary);background:var(--bg-hover);border-left-color:var(--primary-color)}.help-nav a.active{color:var(--primary-color);background:#3b82f61a;border-left-color:var(--primary-color)}.help-content{flex:1;min-width:0;max-width:800px}.help-content h1{font-size:28px;font-weight:700;margin:0 0 8px;color:var(--text-primary);line-height:1.3}.help-content .subtitle{font-size:15px;color:var(--text-secondary);margin:0 0 32px;line-height:1.5}.help-content section{margin-bottom:40px;padding-bottom:32px;border-bottom:1px solid var(--border-color)}.help-content section:last-child{border-bottom:none}.help-content h2{font-size:20px;font-weight:600;margin:0 0 16px;color:var(--text-primary);display:flex;align-items:center;gap:8px}.help-content h2 .section-icon{width:24px;height:24px;color:var(--primary-color);flex-shrink:0}.help-content h3{font-size:16px;font-weight:600;margin:20px 0 8px;color:var(--text-primary)}.help-content p{font-size:14px;line-height:1.7;color:var(--text-secondary);margin:0 0 12px}.help-content ul,.help-content ol{font-size:14px;line-height:1.7;color:var(--text-secondary);margin:0 0 16px;padding-left:24px}.help-content li{margin-bottom:6px}.help-content strong{color:var(--text-primary);font-weight:600}.help-content table{width:100%;border-collapse:collapse;font-size:13px;margin:0 0 16px}.help-content th{text-align:left;padding:8px 12px;background:var(--bg-solid);color:var(--text-primary);font-weight:600;border-bottom:2px solid var(--primary-color);white-space:nowrap}.help-content td{padding:8px 12px;border-bottom:1px solid var(--border-color);color:var(--text-secondary);vertical-align:top}.help-content tr:hover td{background:#3b82f60d}.help-content code{font-family:SF Mono,Fira Code,Consolas,monospace;background:var(--bg-solid);padding:2px 6px;border-radius:3px;font-size:13px;color:#7dd3fc}.help-content pre{background:var(--bg-solid);border:1px solid var(--border-color);border-radius:6px;padding:16px;overflow-x:auto;margin:0 0 16px}.help-content pre code{background:none;padding:0;font-size:13px;line-height:1.6;color:var(--text-secondary)}.faq-item{border:1px solid var(--border-color);border-radius:6px;margin-bottom:8px;overflow:hidden}.faq-question{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;cursor:pointer;font-size:14px;font-weight:600;color:var(--text-primary);background:var(--bg-solid);transition:background .2s;-webkit-user-select:none;user-select:none}.faq-question:hover{background:var(--bg-hover)}.faq-question:after{content:"+";font-size:18px;color:var(--text-secondary);transition:transform .2s;flex-shrink:0;margin-left:12px}.faq-item.open .faq-question:after{content:"−"}.faq-answer{display:none;padding:12px 16px;font-size:14px;line-height:1.7;color:var(--text-secondary)}.faq-item.open .faq-answer{display:block}.step-list{list-style:none;padding:0;counter-reset:step}.step-list li{counter-increment:step;display:flex;gap:12px;margin-bottom:16px;align-items:flex-start}.step-list li:before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--primary-color);color:#fff;font-size:13px;font-weight:700;flex-shrink:0;margin-top:2px}.info-card{background:var(--bg-solid);border:1px solid var(--border-color);border-left:3px solid var(--primary-color);border-radius:6px;padding:16px;margin:16px 0}.info-card p{margin:0;color:var(--text-secondary);font-size:14px;line-height:1.6}.info-card code{font-size:13px}.back-to-top{position:fixed;bottom:24px;right:24px;width:40px;height:40px;border-radius:50%;background:var(--primary-color);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 4px 12px #3b82f666;opacity:0;transform:translateY(20px);transition:opacity .3s,transform .3s;z-index:50}.back-to-top.visible{opacity:1;transform:translateY(0)}.back-to-top:hover{background:#2563eb}.help-footer{text-align:center;padding:24px;border-top:1px solid var(--border-color);color:var(--text-secondary);font-size:13px}.help-footer a{color:var(--primary-color);text-decoration:none}.help-footer a:hover{text-decoration:underline}@media(max-width:860px){.help-layout{flex-direction:column;padding:16px}.help-nav{width:100%;position:static;max-height:none;margin-bottom:16px}.help-nav ul{display:flex;flex-wrap:wrap;gap:4px}.help-nav li{margin-bottom:0}.help-nav a{border-left:none;padding:4px 10px;font-size:12px}.help-content h1{font-size:22px}.help-content h2{font-size:17px}}