.installer-nav{position:sticky;top:12px;z-index:30;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;padding:7px;margin-bottom:26px;background:rgba(14,20,29,.96);border:1px solid var(--hairline-strong);border-radius:8px;box-shadow:0 6px 24px #0004;backdrop-filter:blur(14px)}
.installer-nav a{display:flex;justify-content:center;align-items:center;text-decoration:none;text-align:center;padding:12px 6px;color:var(--text-soft);border-radius:5px;font-size:14px;font-weight:600;line-height:1.5;letter-spacing:0;min-width:0}
.installer-nav a:hover,.installer-nav a[aria-current="location"]{color:#71dfc2;background:#173a32}
.installer-nav a:focus-visible,.config-only-section button:focus-visible{outline:2px solid var(--emerald-2);outline-offset:2px}
#codex-install,#claude-install,#addons,#config-only{scroll-margin-top:96px}
.config-only-section{padding:28px 0;margin:26px 0;border-top:1px solid var(--hairline-strong);border-bottom:1px solid var(--hairline-strong)}
.config-only-key{display:flex;align-items:center;gap:12px;margin:20px 0 10px}
.config-only-key label{font-size:14px;white-space:nowrap}.config-only-key label span{color:var(--muted);font-size:12px;margin-left:5px}
.config-only-key input{flex:1;min-width:0;font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--hairline-strong);border-radius:6px;padding:12px 14px;outline:none;letter-spacing:0}
.config-only-key input:focus{border-color:var(--emerald-2)}
.config-only-key .fallback-action{width:auto;margin:0;padding:9px 12px}
.config-only-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:22px 0}
.config-only-options article{min-width:0;display:flex;flex-direction:column;gap:12px}.config-only-options h3{font-size:18px;margin:0;letter-spacing:0}.config-only-options .primary-action{margin-top:auto;white-space:normal;line-height:1.5;min-height:52px;border-radius:6px}
.config-only-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:10px 0;color:var(--muted);font-size:13px}
.config-only-bottom [role="group"]{display:flex;padding:3px;border:1px solid var(--hairline);border-radius:6px;gap:3px}
.config-only-bottom button{cursor:pointer;background:none;border:0;color:var(--text-soft);padding:7px 16px;border-radius:4px;font:inherit}
.config-only-bottom button[aria-pressed="true"]{background:#173a32;color:#71dfc2}
@media(max-width:600px){.installer-nav{top:6px;gap:3px;padding:5px;margin-bottom:18px;grid-template-columns:repeat(2,minmax(0,1fr))}.installer-nav a{font-size:13px;padding:9px 6px}#codex-install,#claude-install,#addons,#config-only{scroll-margin-top:126px}.config-only-options{grid-template-columns:1fr;gap:24px}.config-only-key{flex-wrap:wrap}.config-only-key label{width:100%}.config-only-section{padding:22px 0}.config-only-bottom button{padding:7px 12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}