/* RSD responsive refinement v4 — 03.10.2026. Loaded after page styles. */
:root {
  --rsd-v4-ink: #0b1f3a;
  --rsd-v4-accent: #9f1d35;
  --rsd-v4-section: clamp(26px, 2.65vw, 36px);
  --rsd-v4-statement: clamp(23px, 2.1vw, 28px);
}
/* One shared header, independent of the historical page-specific headers. */
.rsd-header-v4 {
  position: sticky; top: 0; z-index: 1100;
  width: 100%; background: #fff; color: var(--rsd-v4-ink);
  border-bottom: 1px solid #d9dde3;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
}
.rsd-header-v4, .rsd-header-v4 * { box-sizing: border-box; }
.rsd-header-v4__inner {
  width: 100%; max-width: 1200px; margin: 0 auto;
  padding: 14px clamp(20px, 4vw, 48px);
  min-height: 88px; display: flex; align-items: center;
  justify-content: space-between; gap: 24px;
}
.rsd-header-v4 .rsd-brand-v4 {
  display: inline-flex; flex: 0 0 auto; align-items: center;
  margin: 0; padding: 0; line-height: 0; border: 0;
}
.rsd-header-v4 .rsd-brand-v4 img {
  display: block; width: auto; height: 48px; max-width: none;
  aspect-ratio: 1600 / 360; object-fit: contain;
}
.rsd-header-v4 .rsd-nav-v4 { margin: 0; padding: 0; background: #fff; }
.rsd-header-v4 .rsd-nav-v4 ul {
  display: flex; flex-wrap: nowrap; align-items: center;
  gap: clamp(16px, 1.8vw, 26px); list-style: none; margin: 0; padding: 0;
}
.rsd-header-v4 .rsd-nav-v4 li { margin: 0; padding: 0; }
.rsd-header-v4 .rsd-nav-v4 a {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: 8px 0; border: 0; border-bottom: 2px solid transparent;
  background: #fff; color: var(--rsd-v4-ink);
  font: 500 14px/1.4 "IBM Plex Sans", system-ui, sans-serif;
  letter-spacing: .025em; text-transform: none; text-decoration: none;
  white-space: nowrap; transition: color .18s, border-color .18s;
}
.rsd-header-v4 .rsd-nav-v4 a:hover,
.rsd-header-v4 .rsd-nav-v4 a[aria-current] {
  color: var(--rsd-v4-accent); border-bottom-color: var(--rsd-v4-accent);
}
.rsd-header-v4 .nav-toggle {
  color: var(--rsd-v4-ink); background: #fff; border-color: #d9dde3;
}
/* Role-based type scale. Existing body fonts and colour contexts are retained. */
.rsd-v4 main { font-size: 17px; line-height: 1.65; overflow-wrap: anywhere; }
.rsd-v4 main h1, .rsd-v4 main h2, .rsd-v4 main h3 { hyphens: auto; }
.rsd-v4-home .rsd-hero-motion__title { hyphens: none; }
.rsd-v4 main h1:not(.rsd-hero-motion__title) {
  font-size: clamp(32px, 3.3vw, 44px); line-height: 1.15;
  letter-spacing: -.015em;
}
.rsd-v4 main h2:not(.rsd-hero-motion__title),
.rsd-v4 main .h-section:not(p), .rsd-v4 main .h-caps {
  font-size: var(--rsd-v4-section); line-height: 1.22;
  letter-spacing: -.01em; text-transform: none;
}
.rsd-v4 main h3 {
  font-size: 18px; line-height: 1.4; letter-spacing: .01em;
  text-transform: none;
}
.rsd-v4 main .lead { font-size: 19px; line-height: 1.6; }
.rsd-v4-home .hero-text .h-display {
  font-size: var(--rsd-v4-section); line-height: 1.22;
  max-width: 32ch; text-transform: none; letter-spacing: -.01em;
}
.rsd-v4-home .hero-text { padding-top: clamp(40px, 5vw, 64px); padding-bottom: clamp(40px, 5vw, 64px); }
.rsd-v4-home .claim-band .h-section,
.rsd-v4-home .transition-line,
.rsd-v4-home .conviction blockquote {
  font-size: var(--rsd-v4-statement); line-height: 1.4; letter-spacing: 0;
}
.rsd-v4-home .claim-band { padding-top: clamp(36px, 4vw, 56px); padding-bottom: clamp(36px, 4vw, 56px); }
.rsd-v4-home .step h3, .rsd-v4-home .module h3,
.rsd-v4-home .cols4 h3, .rsd-v4-home .services .title {
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 18px; font-weight: 600; line-height: 1.4;
  letter-spacing: .01em; text-transform: none;
}
.rsd-v4-home .cols4 h3 { color: #fff; }
.rsd-v4-home .services .title { margin: 0; }
.rsd-v4-home .rsd-hero-motion__title {
  font-size: clamp(42px, 4.6vw, 64px); line-height: 1.08;
  letter-spacing: -.025em; font-weight: 400; text-transform: none;
}
.rsd-v4-home .rsd-hero-motion__eyebrow {
  font-size: 12px; line-height: 1.5; font-weight: 600;
  letter-spacing: .18em; margin: 0 0 14px;
}
.rsd-v4-home .rsd-hero-motion__subline {
  font-size: clamp(18px, 1.65vw, 23px); line-height: 1.45; margin-top: 18px;
}
.rsd-v4.rsd-v4-legal main h2:not(.rsd-hero-motion__title) { font-size: 22px; line-height: 1.35; }
.rsd-v4-legal main h3 { font-size: 18px; }
@media (max-width: 1040px) {
  .rsd-header-v4__inner { min-height: 80px; padding-top: 12px; padding-bottom: 12px; }
  .rsd-header-v4 .rsd-nav-v4 { max-height: calc(100svh - 80px); overflow-y: auto; }
  .rsd-header-v4 .rsd-nav-v4 a { font-size: 16px; line-height: 1.4; white-space: normal; }
  /* Without JS the navigation remains reachable. */
  html:not(.js) .rsd-header-v4__inner { flex-wrap: wrap; }
  html:not(.js) .rsd-header-v4 .rsd-nav-v4 { width: 100%; }
  html:not(.js) .rsd-header-v4 .rsd-nav-v4 ul { flex-wrap: wrap; }
}
@media (max-width: 760px) {
  .rsd-header-v4__inner { min-height: 72px; padding: 10px 20px; }
  .rsd-header-v4 .rsd-brand-v4 img { height: 34px; }
  .rsd-header-v4 .rsd-nav-v4 { max-height: calc(100svh - 72px); }
  .rsd-v4 main .lead { font-size: 17px; line-height: 1.6; }
  .rsd-v4 main h3, .rsd-v4-home .step h3, .rsd-v4-home .module h3,
  .rsd-v4-home .cols4 h3, .rsd-v4-home .services .title { font-size: 17px; }
  .rsd-v4-home .rsd-hero-motion { min-height: 0; }
  .rsd-v4-home .rsd-hero-motion__slides {
    position: relative; inset: auto; display: grid;
  }
  .rsd-v4-home .rsd-hero-motion__slide {
    position: relative; inset: auto; grid-area: 1 / 1;
    min-height: clamp(420px, 66svh, 640px); min-width: 0;
  }
  .rsd-v4-home .rsd-hero-motion__content {
    min-height: inherit; padding: 40px 22px 68px;
    justify-content: flex-end;
  }
  .rsd-v4-home .rsd-hero-motion__title {
    font-size: clamp(30px, 8.5vw, 40px); line-height: 1.1; max-width: 100%;
  }
  .rsd-v4-home .rsd-hero-motion__eyebrow {
    font-size: 11px; line-height: 1.5; letter-spacing: .12em; margin-bottom: 12px;
  }
  .rsd-v4-home .rsd-hero-motion__subline {
    font-size: 17px; line-height: 1.4; max-width: 100%; margin-top: 16px;
  }
  .rsd-v4-home .rsd-hero-motion__picture img,
  .rsd-v4-home .rsd-hero-motion__slide.is-active .rsd-hero-motion__picture img {
    animation: none !important; transform: none !important; will-change: auto;
  }
  .rsd-v4-home .rsd-hero-motion__slide:first-child .rsd-hero-motion__picture img { object-position: 42% 50%; }
  .rsd-v4-home .rsd-hero-motion__slide:nth-child(2) .rsd-hero-motion__picture img { object-position: 50% 48%; }
  .rsd-v4-home .rsd-hero-motion__shade {
    background: linear-gradient(0deg,rgba(0,0,0,.78) 0%,rgba(0,0,0,.45) 47%,rgba(0,0,0,.05) 100%);
  }
  .rsd-v4-home .rsd-hero-motion__progress { left: 22px; bottom: 24px; }
}
@media print { .rsd-header-v4 { position: static; } }