/* ========== Reset ========== */
/* [优化] 字体栈增加 Microsoft YaHei 回退，Windows 优先 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-primary) var(--bg-texture);
  -webkit-font-smoothing: antialiased;
}

button, a, textarea {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
}

/* ========== Global Scrollbar ========== */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-medium); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }
::-webkit-scrollbar-corner { background: transparent; }
html { scrollbar-width: thin; scrollbar-color: var(--border-medium) transparent; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}