/* ============ Footer ============ */
footer{background:var(--c-bg-tertiary);border-top:1px solid var(--c-border);padding:4rem 0 2rem;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2.5rem;margin-bottom:3rem;}
.foot-brand .iq-logo{margin-bottom:1rem;}
.foot-brand p{color:var(--c-fg-muted);font-size:.88rem;line-height:1.6;margin-bottom:1.3rem;max-width:280px;}
.foot-iso{display:flex;gap:.6rem;margin-bottom:1.3rem;flex-wrap:wrap;}
.foot-iso span{font-family:var(--font-mono);font-size:.7rem;color:var(--c-fg-secondary);border:1px solid var(--c-border);border-radius:var(--radius-sm);padding:.25rem .5rem;}
.foot-group{max-width:280px;margin:-.55rem 0 1.1rem;color:var(--c-fg-secondary);font-size:.82rem;line-height:1.5;}
.foot-social{display:flex;gap:.7rem;}
.foot-social a{width:34px;height:34px;border:1px solid var(--c-border-strong);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--c-fg-muted);transition:var(--t-fast);}
.foot-social a:hover{color:#fff;border-color:var(--c-accent-blue);}
.foot-col h5{font-size:.78rem;font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--c-fg-muted);margin-bottom:1.1rem;}
.foot-col ul{list-style:none;display:grid;gap:.6rem;}
.foot-col a{color:var(--c-fg-secondary);font-size:.88rem;transition:color var(--t-fast);}
.foot-col a:hover{color:var(--c-accent-blue);}
.foot-bottom{border-top:1px solid var(--c-border);padding-top:1.5rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;}
.foot-bottom .legal{font-size:.78rem;color:var(--c-fg-muted);font-family:var(--font-mono);line-height:1.6;}
.foot-bottom .legal-links{display:flex;gap:1.2rem;font-size:.8rem;}
.foot-bottom .legal-links a{color:var(--c-fg-muted);}
.foot-bottom .legal-links a:hover{color:var(--c-fg-secondary);}
@media (max-width:1024px){.foot-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:640px){.foot-grid{grid-template-columns:1fr;}.foot-bottom{flex-direction:column;align-items:flex-start;}}