.help-center-inner[data-v-51fa280d]{padding:16px 16px 100px;background:#fff;min-height:100%}.nav-bar[data-v-51fa280d]{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;position:relative}.back-btn[data-v-51fa280d]{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#f5f5f5;border-radius:50%;cursor:pointer;transition:all .2s}.back-btn .van-icon[data-v-51fa280d]{font-size:20px;color:#1a1a1a}.back-btn[data-v-51fa280d]:active{background:#e8e8e8;transform:scale(.95)}.nav-title[data-v-51fa280d]{font-size:17px;font-weight:600;color:#1a1a1a}.nav-placeholder[data-v-51fa280d]{width:36px;height:36px}.content-section[data-v-51fa280d]{display:flex;flex-direction:column;gap:12px}.help-item[data-v-51fa280d]{background:#f8f8f8;border-radius:12px;overflow:hidden;transition:all .2s}.help-item.expanded[data-v-51fa280d]{background:#f8f8f8}.help-header[data-v-51fa280d]{display:flex;align-items:center;justify-content:space-between;padding:16px;cursor:pointer}.help-header[data-v-51fa280d]:active{opacity:.8}.help-header-left[data-v-51fa280d]{display:flex;align-items:center;gap:12px}.help-icon[data-v-51fa280d]{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#1a1a1a;border-radius:10px}.help-icon .van-icon[data-v-51fa280d]{font-size:20px;color:#fff}.help-title[data-v-51fa280d]{font-size:15px;font-weight:600;color:#1a1a1a}.arrow-icon[data-v-51fa280d]{font-size:16px;color:#999;transition:transform .2s}.help-body[data-v-51fa280d]{padding:0 16px 16px}.help-line[data-v-51fa280d]{font-size:13px;color:#666;line-height:1.7;margin:0 0 8px}.help-line[data-v-51fa280d]:last-child{margin-bottom:0}