/* App-style tab navigation */
header{position:fixed;background:rgba(8,10,13,.92);backdrop-filter:blur(16px)}main{padding-top:82px;min-height:calc(100vh - 82px)}[data-page].tab-hidden{display:none}.tab-link.active{color:var(--amber);position:relative}.tab-link.active:after{content:'';position:absolute;left:0;right:0;bottom:-10px;height:1px;background:var(--amber)}.page-enter{animation:pageEnter .35s ease-out}@keyframes pageEnter{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.form-success{display:none;grid-column:span 2;padding:13px;background:#d5eee8;color:#145349;font-size:12px;font-weight:700}.form-success.show{display:block}@media(max-width:780px){main{padding-top:70px}header nav.mobile-open{display:flex;position:absolute;top:70px;left:0;right:0;background:#101419;padding:18px 5vw;border-bottom:1px solid var(--line);flex-direction:column;gap:17px}.tab-link.active:after{display:none}}