/* Reset & Grundlagen */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Scroll-Animationen: Progressive Enhancement */
.fade-in-up {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s var(--ease-smooth),
              transform 0.7s var(--ease-smooth);
}

.js-animations .fade-in-up {
  opacity: 0;
  transform: translateY(30px);
}

.js-animations .fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children > .fade-in-up:nth-child(1) { transition-delay: 0s; }
.stagger-children > .fade-in-up:nth-child(2) { transition-delay: 0.1s; }
.stagger-children > .fade-in-up:nth-child(3) { transition-delay: 0.2s; }
.stagger-children > .fade-in-up:nth-child(4) { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  .fade-in-up,
  .js-animations .fade-in-up {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* CJK */
[lang="zh"] { word-break: break-all; line-break: strict; }
[lang="zh"] .section-heading,
[lang="zh"] .cta-heading,
[lang="zh"] .slide-content-motto {
  letter-spacing: 0.02em; line-height: 1.35;
}