/* ============================================================
   FRAME — header, navigation, mobile panel, footer.
   Appended after site.css. Uses only existing design tokens.
   No layout shift: header height is fixed; mobile panel is
   position:fixed and never affects document flow.
   ============================================================ */

/* skip link — visible only on focus */
.skip-link{position:absolute;left:-999px;top:0;z-index:60;background:var(--ink);color:#fff;
  padding:.6rem 1rem;border-radius:0 0 var(--r-md) 0;font-weight:700;font-size:.9375rem}
.skip-link:focus{left:0}

/* ---- brand ---- */
.brand{display:inline-flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--ink)}
.brand__glyph{width:34px;height:34px;border-radius:8px;background:var(--blue);color:#fff;flex:none;
  display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:1.05rem;line-height:1;
  box-shadow:0 2px 0 var(--blue-deep)}
.brand__word{font-family:var(--display);font-weight:600;font-size:1.15rem;letter-spacing:-.01em}
.brand__word em{font-style:normal;color:var(--blue)}

/* ---- header ---- */
.site-header::before{content:"";display:block;height:4px;background:var(--strip)}
.site-header{background:#FBFAF7;border-bottom:1px solid rgba(30,45,65,.08);
  --strip:linear-gradient(90deg,var(--blue) 0 25%,var(--coral) 25% 50%,var(--green) 50% 75%,var(--gold) 75% 100%);
  position:sticky;top:0;z-index:40}
.site-header__bar{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:var(--space-24);min-height:72px;padding:.6rem 0}

/* ---- desktop nav ---- */
.site-nav{display:flex;justify-content:center}
.site-header__cta{justify-self:end;padding:0 1.3rem;height:42px;font-size:15px;font-weight:600}
.site-nav__list{display:flex;gap:var(--space-32);list-style:none;margin:0;padding:0}
.site-nav__link{position:relative;text-decoration:none;color:var(--ink-soft);
  font-size:15px;font-weight:500;padding:.15rem 0;transition:color var(--dur) var(--ease)}
.site-nav__link:hover{color:var(--ink)}
.site-nav__link::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--blue);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform var(--dur) var(--ease)}
.site-nav__list li:nth-child(1) .site-nav__link::after{background:var(--blue)}
.site-nav__list li:nth-child(2) .site-nav__link::after{background:var(--coral)}
.site-nav__list li:nth-child(3) .site-nav__link::after{background:var(--green)}
.site-nav__list li:nth-child(4) .site-nav__link::after{background:var(--gold)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link.is-active{color:var(--ink)}
.site-nav__link.is-active::after{transform:scaleX(1)}

/* ---- mobile toggle (hidden on desktop) ---- */
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:none;background:transparent;
  cursor:pointer;border-radius:var(--r-md);align-items:center;justify-content:center}
.nav-toggle:hover{background:rgba(23,37,63,.05)}
.nav-toggle__bars{display:block;width:22px;height:16px;position:relative}
.nav-toggle__bars span{position:absolute;left:0;width:100%;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle__bars span:nth-child(1){top:0}
.nav-toggle__bars span:nth-child(2){top:7px}
.nav-toggle__bars span:nth-child(3){top:14px}

/* ---- mobile off-canvas panel ---- */
.mobile-nav{position:fixed;inset:0;z-index:50}
.mobile-nav[hidden]{display:none}
.mobile-nav__scrim{position:absolute;inset:0;background:rgba(23,37,63,.4)}
.mobile-nav__panel{position:absolute;top:0;right:0;height:100%;width:min(84vw,340px);
  background:var(--sheet);box-shadow:var(--shadow-lift);padding:var(--space-24) var(--space-24) var(--space-32);
  display:flex;flex-direction:column}
.mobile-nav__head{display:flex;align-items:center;justify-content:space-between;
  padding-bottom:var(--space-24);border-bottom:1px dashed var(--rule)}
.nav-close{width:44px;height:44px;border:none;background:transparent;color:var(--ink);cursor:pointer;
  border-radius:var(--r-md);display:grid;place-items:center}
.nav-close:hover{background:rgba(23,37,63,.05)}
.mobile-nav__list{list-style:none;margin-top:var(--space-24)}
.mobile-nav__link{display:block;text-decoration:none;color:var(--ink);font-family:var(--display);
  font-weight:600;font-size:var(--step-2);padding:.7rem 0;border-bottom:1px solid var(--rule)}
.mobile-nav__link.is-active{color:var(--blue)}

/* animation only where allowed */
@media(prefers-reduced-motion:no-preference){
  .mobile-nav__scrim{animation:fade .2s var(--ease)}
  .mobile-nav__panel{animation:slidein .25s var(--ease)}
  @keyframes fade{from{opacity:0}}
  @keyframes slidein{from{transform:translateX(100%)}}
}

/* ---- footer ---- */
.site-footer{background:var(--desk);padding:var(--space-48) 0 var(--space-32);margin-top:var(--space-64)}
.site-footer__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-24);
  flex-wrap:wrap;padding-top:var(--space-24)}
.site-footer__list{display:flex;gap:var(--space-24);list-style:none;flex-wrap:wrap}
.site-footer__list a{text-decoration:none;color:var(--ink-soft);font-size:.9375rem;font-weight:600}
.site-footer__list a:hover{color:var(--ink)}
.site-footer__fine{margin-top:var(--space-24);color:var(--ink-faint);font-size:var(--step--1)}

/* ---- responsive switch ---- */
@media(max-width:960px){
  .site-nav{display:none}
  .nav-toggle{display:inline-flex}
  .site-header__bar{grid-template-columns:auto 1fr auto}
  .site-footer__inner{flex-direction:column;align-items:flex-start}
}
/* phone: CTA folds into the menu so logo + burger stay clean */
@media(max-width:560px){
  .site-header__cta{display:none}
}

.mobile-nav__cta{display:block;text-align:center;margin-top:var(--space-24)}