:root { --bg: #f5f7fb; --ink: #101827; --text: #20304a; --muted: #61718a; --line: rgba(28, 45, 73, 0.16); --line-strong: rgba(28, 45, 73, 0.24); --blue: #0d3b66; --blue-2: #185b9d; --accent: #f6b321; --shadow: 0 20px 50px rgba(31, 52, 83, 0.10); --shadow-soft: 0 12px 30px rgba(31, 52, 83, 0.08); --radius: 24px; --container: 1240px; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body { margin: 0; font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--text); background: radial-gradient(circle at 12% 8%, rgba(24,91,157,.10), transparent 28rem), radial-gradient(circle at 90% 10%, rgba(246,179,33,.16), transparent 24rem), linear-gradient(180deg, #f8fbff 0%, var(--bg) 48%, #eef2f7 100%); min-height: 100vh; }
body::before { content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 70% 22%, rgba(13,59,102,.055), transparent 20rem),
    radial-gradient(circle at 28% 72%, rgba(246,179,33,.08), transparent 22rem);
  opacity: .85; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header { position: sticky; top: 0; z-index: 30; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.92); backdrop-filter: blur(16px); box-shadow: 0 10px 24px rgba(31,52,83,.04); }
.header-inner { width: min(var(--container), calc(100% - 48px)); height: 86px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; width: 178px; flex: 0 0 auto; }
.brand img { width: 170px; height: auto; }
.main-nav { display: flex; align-items: center; gap: 24px; color: #485a73; font-size: 14px; font-weight: 750; }
.header-links { display: flex; align-items: center; gap: 24px; }
.header-links a { position: relative; padding: 9px 0; transition: color .18s ease; }
.header-links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 3px; height: 2px; border-radius: 999px; background: linear-gradient(90deg, var(--accent), rgba(246,179,33,.38)); transform: scaleX(0); transform-origin: left center; transition: transform .18s ease; }
.header-links a:hover { color: var(--blue); }
.header-links a:hover::after { transform: scaleX(1); }
.language-switch { display: flex; align-items: center; gap: 6px; padding-left: 18px; border-left: 1px solid var(--line); }
.language-switch button { border: 0; border-radius: 9px; padding: 8px 10px; color: #526178; background: transparent; font-weight: 800; cursor: pointer; }
.language-switch .active { color: #152033; background: linear-gradient(135deg, #ffd96b, var(--accent)); box-shadow: 0 7px 16px rgba(246,179,33,.24), inset 0 1px 0 rgba(255,255,255,.55); }

@media (min-width: 821px) {
  .main-nav > .language-switch button.active:hover,
  .main-nav > .language-switch button.active:focus-visible,
  .main-nav > .language-switch button[aria-pressed="true"]:hover,
  .main-nav > .language-switch button[aria-pressed="true"]:focus-visible {
    color: #182236 !important;
    background: linear-gradient(135deg, #f2cf76, #d8a13a) !important;
    box-shadow: 0 10px 22px rgba(216,161,58,.24), inset 0 1px 0 rgba(255,255,255,.64), inset 0 -2px 0 rgba(111,76,0,.13) !important;
  }
}
.menu-toggle { display: none; }

.site-footer { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; padding: 24px 0 26px; color: var(--muted); text-align: center; font-size: 14px; }
.site-footer p { margin: 0; }
.footer-note { max-width: 780px; margin: 8px auto 0 !important; font-size: 12px; line-height: 1.5; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
*::before,
*::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media (max-width: 820px) {
  .brand { width: 158px; }
  .brand img { width: 150px; }
  .menu-toggle { display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; width: 42px; height: 42px; border: 1px solid var(--line-strong); border-radius: 12px; background: #fff; cursor: pointer; }
  .menu-toggle span { width: 18px; height: 2px; border-radius: 999px; background: var(--blue); }
  .main-nav { position: absolute; top: 76px; left: 17px; right: 17px; display: none; flex-direction: column; align-items: stretch; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.98); box-shadow: var(--shadow-soft); }
  .main-nav.open { display: flex; }
  .header-links { flex-direction: column; align-items: stretch; gap: 0; }
  .header-links a { padding: 12px 10px; }
  .language-switch { padding-left: 0; border-left: 0; padding-top: 4px; }
}

@media (max-width: 480px) {
  .brand { width: 146px; }
  .brand img { width: 138px; }
}