/* Shared opt-in navigation, including the approved offerte header. */
.sin-navigation-page {
  --sin-header-height: 82px;
  --sin-nav-ink: #050914;
  --sin-nav-panel: #08182e;
  --sin-nav-text: #f5f9ff;
  --sin-nav-muted: #b6cce2;
  --sin-nav-cyan: #58d7ff;
  --sin-nav-border: #506d89;
  --sin-nav-rule: rgba(143, 194, 255, .2);
  --sin-nav-button-start: #1469b4;
  --sin-nav-button-end: #14739a;
}
.sin-navigation-page .sin-site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  height: var(--sin-header-height);
  border-bottom: 1px solid var(--sin-nav-rule);
  background: rgba(5, 9, 20, .96);
  backdrop-filter: blur(18px);
}
.sin-navigation-page .sin-site-header-inner {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-width: 0;
}
.sin-navigation-page .sin-site-brand {
  display: block;
  flex: 0 0 126px;
  width: 126px;
  /* Presentation crop: sinus + SIN only; the original PNG remains unchanged. */
  height: 70px;
  overflow: hidden;
}
.sin-navigation-page .sin-site-brand img {
  display: block;
  width: 126px;
  max-width: none;
  height: auto;
  transform: translateY(-21px);
  mix-blend-mode: screen;
  mask-image: radial-gradient(ellipse 68% 88% at 50% 48%, #000 42%, rgba(0, 0, 0, .78) 54%, rgba(0, 0, 0, .24) 68%, transparent 82%);
  -webkit-mask-image: radial-gradient(ellipse 68% 88% at 50% 48%, #000 42%, rgba(0, 0, 0, .78) 54%, rgba(0, 0, 0, .24) 68%, transparent 82%);
}
.sin-navigation-page .sin-desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(.9rem, 2vw, 1.75rem);
  min-width: 0;
}
.sin-navigation-page .sin-site-header :is(a, summary) {
  color: var(--sin-nav-text);
  font-family: var(--sans, Manrope, Arial, sans-serif);
  font-size: .84rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0;
  text-decoration: none;
  text-transform: none;
}
.sin-navigation-page .sin-nav-link,
.sin-navigation-page .sin-energy-menu > summary {
  display: flex;
  align-items: center;
  gap: .5rem;
  min-height: 44px;
  padding: .5rem .2rem;
  white-space: nowrap;
}
.sin-navigation-page .sin-site-header :is(a, summary):hover,
.sin-navigation-page .sin-site-header a[aria-current],
.sin-navigation-page .sin-energy-menu[data-active="true"] > summary {
  color: var(--sin-nav-cyan);
}
.sin-navigation-page .sin-site-header :focus-visible,
.sin-navigation-page .sin-footer-links :focus-visible {
  outline: 2px solid var(--sin-nav-cyan);
  outline-offset: 4px;
}
.sin-navigation-page .sin-site-header summary {
  list-style: none;
  cursor: pointer;
}
.sin-navigation-page .sin-site-header summary::-webkit-details-marker { display: none; }
.sin-navigation-page .sin-energy-menu { position: relative; }
.sin-navigation-page .sin-energy-menu > summary::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}
.sin-navigation-page .sin-energy-menu[open] > summary::after {
  transform: translateY(2px) rotate(225deg);
}
.sin-navigation-page .sin-energy-links {
  display: grid;
  gap: .2rem;
  position: absolute;
  top: calc(100% + .5rem);
  left: -.8rem;
  min-width: 220px;
  padding: .55rem;
  border: 1px solid var(--sin-nav-border);
  border-radius: 4px;
  background: var(--sin-nav-panel);
  box-shadow: 0 14px 30px rgba(0, 0, 0, .25);
}
.sin-navigation-page .sin-energy-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: .6rem .75rem;
  border-radius: 2px;
  white-space: nowrap;
}
.sin-navigation-page .sin-energy-links a:hover { background: rgba(88, 215, 255, .08); }
.sin-navigation-page .sin-site-header .sin-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  min-height: 49px;
  padding: .8rem 1.05rem;
  border: 1px solid rgba(79, 205, 255, .55);
  border-radius: 4px;
  background: linear-gradient(135deg, var(--sin-nav-button-start), var(--sin-nav-button-end));
  box-shadow: 0 8px 25px rgba(21, 144, 232, .18);
  color: #fff;
  font-size: .82rem;
  font-weight: 800;
  white-space: nowrap;
  transition: transform .2s ease, filter .2s ease;
}
.sin-navigation-page .sin-site-header .sin-nav-cta:hover {
  color: #fff;
  transform: translateY(-2px);
  filter: brightness(1.08);
}
.sin-navigation-page .sin-mobile-navigation { display: none; }
.sin-navigation-page .sin-energy-menu:not([open]) > .sin-energy-links,
.sin-navigation-page .sin-mobile-navigation:not([open]) > .sin-mobile-panel { display: none; }
.sin-navigation-page .sin-footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .2rem 1.4rem;
  margin: .7rem 0 0;
  color: var(--sin-nav-muted);
  font: 500 .75rem/1.5 var(--sans, Manrope, Arial, sans-serif);
  letter-spacing: 0;
  text-transform: none;
}
.sin-navigation-page .sin-footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: inherit;
  text-decoration: none;
}
.sin-navigation-page .sin-footer-links a:hover { color: var(--sin-nav-cyan); }
.sin-navigation-page .sin-privacy-note { margin: .25rem 0 1rem; color: var(--sin-nav-muted); font-size: .8rem; line-height: 1.7; }
.sin-navigation-page .sin-privacy-note a { color: var(--sin-nav-cyan); text-decoration: underline; text-underline-offset: 3px; }
.sin-navigation-page .sin-contact-identity { margin: 0; color: var(--white); font-size: 1rem; line-height: 1.7; }
.sin-info-page footer .footer-bottom { color: var(--muted); }
@media (max-width: 800px) {
  .sin-navigation-page { --sin-header-height: 70px; }
  .sin-navigation-page .sin-site-brand { flex-basis: 105px; width: 105px; height: 59px; }
  .sin-navigation-page .sin-site-brand img { width: 105px; transform: translateY(-17px); }
  .sin-navigation-page .sin-desktop-nav { display: none; }
  .sin-navigation-page .sin-mobile-navigation { display: block; }
  .sin-navigation-page .sin-mobile-navigation > summary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .65rem;
    min-width: 92px;
    min-height: 44px;
    padding: .55rem .75rem;
    border: 1px solid var(--sin-nav-border);
    border-radius: 4px;
    background: var(--sin-nav-panel);
  }
  .sin-navigation-page .sin-menu-symbol {
    display: grid;
    gap: 4px;
    width: 16px;
  }
  .sin-navigation-page .sin-menu-symbol::before,
  .sin-navigation-page .sin-menu-symbol::after {
    content: "";
    height: 1px;
    background: currentColor;
  }
  .sin-navigation-page .sin-mobile-navigation[open] > summary { color: var(--sin-nav-cyan); }
  .sin-navigation-page .sin-mobile-panel {
    display: grid;
    gap: .35rem;
    position: absolute;
    top: calc(var(--sin-header-height) + .5rem);
    right: var(--pad, 1.25rem);
    left: var(--pad, 1.25rem);
    max-height: calc(100svh - var(--sin-header-height) - 1.5rem);
    overflow-y: auto;
    padding: 1rem;
    border: 1px solid var(--sin-nav-border);
    border-radius: 4px;
    background: var(--sin-nav-panel);
    box-shadow: 0 18px 40px rgba(0, 0, 0, .3);
  }
  .sin-navigation-page .sin-mobile-panel > .sin-nav-link,
  .sin-navigation-page .sin-mobile-panel .sin-energy-menu > summary { padding: .55rem .65rem; }
  .sin-navigation-page .sin-mobile-panel .sin-energy-links {
    position: static;
    min-width: 0;
    margin: .2rem 0 .4rem .65rem;
    padding: .2rem 0 .2rem .65rem;
    border: 0;
    border-left: 1px solid var(--sin-nav-border);
    border-radius: 0;
    box-shadow: none;
  }
  .sin-navigation-page .sin-mobile-panel .sin-nav-cta { margin-top: .5rem; }
  .sin-navigation-page .sin-footer-links { justify-content: center; gap: 0 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  .sin-navigation-page .sin-site-header .sin-nav-cta { transition: none; }
  .sin-navigation-page .sin-site-header .sin-nav-cta:hover { transform: none; }
}