:root {
  --filing-height: calc(48px + env(safe-area-inset-bottom, 0px));
}

.site-filing {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-height: var(--filing-height);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid rgba(125, 211, 231, 0.3);
  background: #081014;
  text-align: center;
}

.site-filing a {
  color: #b9eef0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-weight: 600;
  line-height: 26px;
  text-decoration: none;
}

.site-filing a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-filing a:focus-visible {
  outline: 2px solid #b9eef0;
  outline-offset: 4px;
}

/* 全屏页面为备案栏预留空间，避免覆盖导航和终端输入。 */
.filing-viewport > .site-filing {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
}

.filing-viewport .connection-field,
.filing-viewport .builds-universe {
  min-height: calc(100dvh - var(--filing-height));
}

.filing-viewport .skip-intro {
  bottom: calc(var(--filing-height) + 1rem);
}

.filing-viewport .project-index,
.filing-viewport .universe-note {
  bottom: calc(var(--filing-height) + 1rem);
}

.filing-viewport .terminal-page {
  height: calc(100dvh - var(--filing-height));
  min-height: 0;
}

.filing-viewport .terminal-shell {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}

.filing-viewport .terminal-bar {
  flex-shrink: 0;
}

.filing-viewport .terminal-body {
  flex: 1;
  height: auto;
  min-height: 0;
}

.site-filing--light {
  border-color: #d0d7de;
  background: #f6f8fa;
}

.site-filing--light a {
  color: #0969da;
}

.site-filing--light a:hover {
  color: #0550ae;
}

.site-filing--light a:focus-visible {
  outline-color: #0969da;
}