/* Basic reset: keep layout deterministic */
html,
body {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  background: #0A0A0A;
  font-family: PingFang SC, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  width: 100%;
}

img {
  display: block;
}

/* 去掉浏览器默认输入框 focus 光圈 / outline；组件可自行保留边框高亮 */
input,
textarea,
select {
  outline: none;
  outline-color: transparent;
  -webkit-tap-highlight-color: transparent;
}

input:focus,
input:focus-visible,
textarea:focus,
textarea:focus-visible,
select:focus,
select:focus-visible {
  outline: none;
  outline-color: transparent;
}

input[type="search"] {
  -webkit-appearance: none;
  appearance: none;
}

input[type="search"]::-webkit-search-decoration,
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-results-button,
input[type="search"]::-webkit-search-results-decoration {
  -webkit-appearance: none;
}

html {
  scrollbar-width: thin;
  scrollbar-color: #3A3A3A #0A0A0A;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #0A0A0A;
}

::-webkit-scrollbar-thumb {
  background: #3A3A3A;
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #4A4A4A;
}

/* 语义标题：避免浏览器默认 h1–h3 margin 影响现有布局 */
h1,
h2,
h3 {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

/* 仅供爬虫/读屏的语义内容，不影响视觉布局 */
.seo-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}