/* ========== Reset ========== */
*,*::before,*::after { box-sizing: border-box; }
html,body { margin: 0; padding: 0; }
body {
  font-family: var(--yixian-font-sans);
  font-size: var(--yixian-fs-md);
  color: var(--yixian-text);
  background: var(--yixian-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img,svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul,ol { margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4,h5,h6 { margin: 0; font-family: var(--yixian-font-display); font-weight: 700; letter-spacing: .01em; }
p { margin: 0 0 1em; }

::selection { background: var(--yixian-primary-soft); color: var(--yixian-text); }
:focus-visible { outline: 2px solid var(--yixian-primary-2); outline-offset: 2px; border-radius: 4px; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--yixian-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--yixian-text-mute); }

/* ========== Safe Area ========== */
:root {
  --yixian-safe-top: env(safe-area-inset-top, 0px);
  --yixian-safe-bottom: env(safe-area-inset-bottom, 0px);
  --yixian-safe-left: env(safe-area-inset-left, 0px);
  --yixian-safe-right: env(safe-area-inset-right, 0px);
}

/* ========== Container ========== */
.yixian-container, .container {
  max-width: var(--yixian-container);
  margin: 0 auto;
  padding: 0 var(--yixian-sp-6);
}
@media (max-width: 720px) {
  .yixian-container, .container {
    padding: 0 var(--yixian-sp-4);
  }
}

/* ========== Mobile viewport height fix for iOS ========== */
.yixian-full-height {
  min-height: 100vh;
  min-height: 100dvh;
}

/* ========== Accessibility ========== */
.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;
}

/* ========== Reduced Motion ========== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}