html, body {
  height: 100%;
  margin: 0;
  background: #ffffff;
  color: #45050c;
  overflow: hidden;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

.wrap {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
}
header {
  padding: 18px 24px;
  font-weight: 800;
  font-size: 22px;
}
header a.home {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 32px;
  text-decoration: none;
  color: inherit;
}
header .logo {
  width: 14px;
  height: 14px;
  background: #d5ac4e;
  border-radius: 4px;
  box-shadow: 0 0 0 6px rgba(213, 172, 78, 0.25);
}

main {
  display: grid;
  place-items: center;
}
.hero {
  text-align: center;
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 5vw;
  display: grid;
  gap: 8px;
}
.title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.sub {
  margin-top: 16px;
  color: #404040;
  font-size: clamp(16px, 2.2vw, 22px);
  line-height: 1.6;
}
.presence-line {
  margin-top: 8px;
  font-size: 16px;
  color: #6b7280;
}
.you-line {
  margin-top: 4px;
  font-size: 14px;
  color: #6b7280;
}
.refresh-warning {
  margin-top: 6px;
  font-size: 13px;
  color: #9ca3af;
}

.timer {
  margin-top: 40px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #45050c;
  font-size: clamp(14px, 5vw, 48px);
  line-height: 1.05;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}
.progress-wrap {
  margin-top: 36px;
  padding: 0 5vw;
}
.bar {
  height: 8px;
  background: #e5e7eb;
  border-radius: 999px;
  position: relative;
}
.bar > i {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 40px;
  border-radius: 999px;
  background: #d5ac4e;
}
.sync {
  text-align: center;
  color: #6b7280;
  margin-top: 10px;
}

.post-refresh {
  position: fixed;
  left: 50%;
  top: 16px;
  transform: translateX(-50%);
  background: #45050c;
  color: #eecf6d;
  border: 1px solid #8b6220;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  display: none;
  z-index: 10;
  text-align: center;
}
.post-refresh.visible {
  display: block;
}