/* Floating B on desktop and a compact icon-and-links version on mobile. */
:root { --nav-height: 90px; --nav-offset: 106px; --nav-bottom-space: 0px; }
html { scroll-padding-top: calc(var(--nav-offset) + 16px); scroll-padding-bottom: calc(var(--nav-bottom-space) + 16px); }
.skip-link { z-index: 60; }
.header { position: sticky; top: 16px; z-index: 40; display: block; padding: 0; width: min(100% - 48px,1216px); margin: 16px auto -104px; border: 1px solid var(--line); border-radius: var(--card); background: white; box-shadow: 0 6px 22px rgb(25 36 54 / 6%); }
.header.is-scrolled { box-shadow: 0 6px 26px rgb(25 36 54 / 10%); }
.header-inner { width: calc(100% - 40px); min-height: 88px; display: flex; align-items: center; gap: 20px; margin-inline: auto; }
.header .brand > img { width: 140px; height: auto; }
.header .brand > .brand-icon { display: none; }
.header .header-hall-mark > img { width: 88px; height: auto; }
.header .primary-nav { display: flex; margin-left: auto; gap: 0; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.header .nav-links a { position: relative; min-height: 48px; padding: 12px 13px; border-radius: var(--control); color: var(--muted); font-size: 12px; transition: color 160ms ease, background 160ms ease; }
.nav-links strong { font-weight: 600; }
.header .nav-links a::after { content: ''; position: absolute; bottom: 5px; left: 14px; right: 14px; height: 2px; background: var(--green); transform: scaleX(0); transform-origin: left; transition: transform 180ms ease; }
.header .nav-links a:hover, .header .nav-links a[aria-current] { color: var(--ink); background: var(--soft); }
.header .nav-links a[aria-current]::after { transform: scaleX(1); }
.nav-links .icon { display: none; }
.header .header-cta { min-height: 44px; font-size: 12px; padding: 12px 17px; gap: 12px; background: var(--ink); color: white; transition: color 160ms ease, background 160ms ease; }
.header .header-cta > span { display: inline; }
.header .header-cta:hover { background: var(--green); color: var(--ink); }
.hero-copy { padding-top: 156px; }
.feature-story { scroll-margin-top: 0; }
.is-pinned .feature-sticky { top: calc(var(--nav-offset) + 8px); height: calc(100svh - var(--nav-offset) - var(--nav-bottom-space) - 16px); }
.is-pinned .feature-visual .phone { width: min(100%,290px,calc((100svh - var(--nav-offset) - var(--nav-bottom-space) - 230px)*.49)); }
:where(a,button,[tabindex]) { scroll-margin-bottom: calc(var(--nav-bottom-space) + 16px); }
@media(max-width:960px) {
  :root { --mobile-nav-edge: max(12px,env(safe-area-inset-top,0px)); --nav-height: 66px; --nav-offset: calc(66px + var(--mobile-nav-edge)); --nav-bottom-space: 0px; }
  .header { width: calc(100% - 24px); margin: var(--mobile-nav-edge) auto calc(-66px - var(--mobile-nav-edge)); top: var(--mobile-nav-edge); padding: 0; border-radius: var(--card); border: 1px solid var(--line); box-shadow: 0 6px 22px rgb(25 36 54 / 8%); }
  .header-inner { width: calc(100% - 24px); min-height: 64px; flex-direction: row; align-items: center; gap: 8px; }
  .header .brand { width: 44px; min-height: 44px; flex-shrink: 0; margin: 0; justify-content: center; gap: 0; }
  .header .brand > .brand-icon { display: block; width: 32px; height: auto; }
  .header .brand > .brand-wordmark, .header .brand > .header-hall-mark { display: none; }
  .header .primary-nav { display: block; flex: 1; min-width: 0; position: static; width: auto; margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
  .header .nav-links { flex-direction: row; align-items: stretch; gap: 0; }
  .header .nav-links a { flex: 1; min-height: 44px; flex-direction: row; justify-content: center; padding: 8px 3px; border: 0; border-radius: 0; font-size: 11px; }
  .header .nav-links a .icon { display: none; }
  .header .nav-links a:hover, .header .nav-links a[aria-current] { background: transparent; }
  .header .nav-links a::after { left: calc(50% - 10px); right: auto; width: 20px; bottom: 0; }
  .header .header-cta { display: none; }
  .hero-copy { padding-top: calc(94px + var(--mobile-nav-edge)); }
  .footer { padding-bottom: calc(40px + env(safe-area-inset-bottom,0px)); }
}
@media(prefers-reduced-motion:reduce) {
  .header .nav-links a, .header .nav-links a::after, .header .header-cta { transition: none; }
}