:root{--bg: #0f1115;--panel: #151821;--panel-2: #1b2030;--text: #e8eef7;--muted: #9aa7b2;--brand: #6aa6ff;--brand-2: #7fd2ff;--radius: 14px;--shadow: 0 10px 30px rgba(0,0,0,.35);--gap: 16px}html,body{height:100%;margin:0;font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(1200px 800px at 10% -10%,#192036 0%,transparent 60%),radial-gradient(900px 700px at 100% 0%,#112030 0%,transparent 60%),var(--bg);color:var(--text)}.container{max-width:980px;margin:48px auto;padding:0 20px}.card{background:linear-gradient(180deg,var(--panel) 0%,var(--panel-2) 100%);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.06);padding:24px}.back-btn{background:none;border:none;color:var(--muted);font-size:14px;cursor:pointer;margin-bottom:10px;display:inline-flex;align-items:center;gap:6px;transition:color .2s ease}.back-btn:hover{color:var(--text)}