.panel{display:block!important;background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(248,251,255,.94))!important;border:1px solid #e2eaf2!important;border-radius:22px!important;padding:28px 28px 24px!important;box-shadow:0 12px 28px rgba(148,163,184,.1)!important;position:relative!important;overflow:hidden!important}
.panel::before{content:""!important;position:absolute!important;inset:0 0 auto 0!important;height:5px!important;pointer-events:none!important;background:linear-gradient(90deg,#64b5f6 0%,#81c784 35%,#ffb74d 68%,#e57373 100%)!important}
.os-tab-bar{display:flex;gap:8px;margin:16px 0;flex-wrap:wrap}
.os-tab{padding:10px 20px;border-radius:12px;border:2px solid #dce6ef;background:#fff;cursor:pointer;font-weight:700;font-size:14px;color:#5f6f82;transition:.2s;font-family:inherit}
.os-tab:hover{border-color:#90caf9;color:#1565c0}
.os-tab.active{background:linear-gradient(135deg,#4a8cc7,#64b5f6);color:#fff;border-color:#4a8cc7}
.os-content{display:none}
.os-content.active{display:block}
.step-box{background:#fff;border:1px solid #e2eaf2;border-radius:14px;padding:20px;margin:14px 0;box-shadow:0 4px 12px rgba(148,163,184,.06)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,#4a8cc7,#64b5f6);color:#fff;font-size:14px;font-weight:800;margin-right:10px}
.step-title{font-size:16px;font-weight:800;color:#1f3552;display:inline}
.cmd-box{background:#1e1e2e;border-radius:10px;padding:14px;margin:10px 0;font-family:"Consolas","Monaco",monospace;font-size:13px;color:#a6e3a1;line-height:1.7;overflow-x:auto;border:1px solid #313244}
.cmd-box .prompt{color:#89b4fa;user-select:none}
.cmd-box .output{color:#cdd6f4}
.check-list{margin:12px 0 12px 4px;list-style:none;padding:0}
.check-list li{padding:6px 0;font-size:14px;color:#33475d;position:relative;padding-left:28px}
.check-list li::before{content:"\2713";position:absolute;left:0;color:#66bb6a;font-weight:800;font-size:16px}