*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:#080b12;color:#e1e1e1;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background-image:radial-gradient(ellipse at 20% 50%,rgba(124,58,237,.06) 0%,transparent 60%),radial-gradient(ellipse at 80% 50%,rgba(212,168,67,.05) 0%,transparent 60%)}
.install-wrap{width:100%;max-width:720px;margin:0 auto}
.install-header{text-align:center;padding:40px 20px 32px}
.install-header .logo{width:72px;height:72px;background:linear-gradient(135deg,#7c3aed,#a855f7);border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:34px;margin:0 auto 20px;box-shadow:0 8px 32px rgba(124,58,237,.3)}
.install-header h1{font-size:22px;font-weight:800;color:#fff;margin-bottom:6px;letter-spacing:-.3px}
.install-header .sub{font-size:12px;color:#7c3aed;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:4px}
.install-header .domain{font-size:13px;color:rgba(255,255,255,.35)}
.install-card{background:linear-gradient(145deg,#111827,#0d1117);border:1px solid rgba(255,255,255,.06);border-radius:24px;padding:40px;box-shadow:0 24px 80px rgba(0,0,0,.5)}
.steps-bar{display:flex;gap:8px;margin-bottom:36px}
.step-dot{flex:1;height:4px;border-radius:4px;background:rgba(255,255,255,.08);transition:all .5s ease}
.step-dot.active{background:linear-gradient(90deg,#7c3aed,#a855f7);box-shadow:0 0 12px rgba(124,58,237,.4)}
.step-dot.done{background:#22c55e}
.step{display:none;animation:fadeIn .4s ease}
.step.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.step h2{font-size:20px;font-weight:700;color:#fff;margin-bottom:4px}
.step p{font-size:14px;color:rgba(255,255,255,.45);margin-bottom:24px;line-height:1.6}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:12px;font-weight:600;color:rgba(255,255,255,.5);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
.form-group input,.form-group select{width:100%;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.04);color:#e1e1e1;font-size:14px;transition:all .2s;font-family:inherit}
.form-group input:focus,.form-group select:focus{outline:none;border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.15);background:rgba(255,255,255,.06)}
.form-group input::placeholder{color:rgba(255,255,255,.2)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group .hint{font-size:11px;color:rgba(255,255,255,.3);margin-top:4px}
.form-group .error{color:#ef4444;font-size:12px;margin-top:4px;display:none}
.form-group.invalid input{border-color:#ef4444;box-shadow:0 0 0 3px rgba(239,68,68,.12)}
.form-group.valid input{border-color:#22c55e}
.form-group .key-status{font-size:12px;margin-top:4px;min-height:18px}
.form-group .key-status.valid-text{color:#22c55e}
.form-group .key-status.invalid-text{color:#ef4444}
.form-group .key-status.verifying-text{color:#a855f7}
.btn-row{display:flex;gap:12px;margin-top:28px;justify-content:space-between}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:12px;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all .3s ease;text-decoration:none;font-family:inherit}
.btn-primary{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff;box-shadow:0 4px 16px rgba(124,58,237,.3)}
.btn-primary:hover{box-shadow:0 8px 28px rgba(124,58,237,.4);transform:translateY(-1px)}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-ghost{background:rgba(255,255,255,.06);color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-success{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;box-shadow:0 4px 16px rgba(34,197,94,.3)}
.btn-success:hover{box-shadow:0 8px 28px rgba(34,197,94,.4);transform:translateY(-1px)}
.req-grid{display:grid;gap:10px;margin-bottom:24px}
.req-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.05);font-size:13px}
.req-item .req-label{color:rgba(255,255,255,.6)}
.req-item .req-status{font-weight:600;font-size:12px;padding:4px 10px;border-radius:6px}
.req-status.pass{background:rgba(34,197,94,.12);color:#22c55e}
.req-status.fail{background:rgba(239,68,68,.12);color:#ef4444}
.install-log{background:rgba(0,0,0,.3);border-radius:12px;padding:16px;max-height:260px;overflow-y:auto;font-family:'Cascadia Code','Fira Code',monospace;font-size:12px;line-height:1.8;margin-bottom:20px;border:1px solid rgba(255,255,255,.05)}
.install-log .log-line{padding:2px 0;display:flex;align-items:center;gap:8px}
.install-log .log-line .icon{width:18px;text-align:center}
.install-log .log-line.done{color:#22c55e}
.install-log .log-line.error{color:#ef4444}
.install-log .log-line.pending{color:rgba(255,255,255,.3)}
.install-log .log-line.running{color:#7c3aed}
.progress-bar{width:100%;height:6px;background:rgba(255,255,255,.06);border-radius:6px;overflow:hidden;margin-bottom:24px}
.progress-bar .fill{height:100%;border-radius:6px;background:linear-gradient(90deg,#7c3aed,#a855f7);width:0%;transition:width .5s ease;box-shadow:0 0 16px rgba(124,58,237,.3)}
.success-icon{width:80px;height:80px;border-radius:50%;background:rgba(34,197,94,.12);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:36px;color:#22c55e;animation:scaleIn .5s ease}
@keyframes scaleIn{0%{transform:scale(0)}60%{transform:scale(1.1)}100%{transform:scale(1)}}
.success-details{background:rgba(255,255,255,.03);border-radius:12px;padding:16px;margin-bottom:20px;font-size:13px;line-height:1.8}
.success-details strong{color:rgba(255,255,255,.5);font-weight:600}
.success-details span{color:#e1e1e1;float:right}
.install-footer{text-align:center;padding:20px;font-size:12px;color:rgba(255,255,255,.2)}
.install-footer a{color:#7c3aed;text-decoration:none}
.install-footer a:hover{text-decoration:underline}
.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.15);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:600px){
.install-card{padding:24px 20px}
.form-row{grid-template-columns:1fr}
.btn-row{flex-direction:column}
.btn-row .btn{width:100%;justify-content:center}
}