.tab-bar {
  position: fixed;
  left: 50%;
  bottom: 0;
  z-index: 70;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  width: min(100%, var(--max-w));
  height: calc(var(--tab-h) + var(--safe-b));
  padding: 5px 8px calc(5px + var(--safe-b));
  border-top: 1px solid #e5e7eb;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 -8px 24px rgba(15, 23, 42, 0.08);
  transform: translateX(-50%);
}

.tab-bar .ti {
  min-width: 0;
  border: 0;
  background: transparent;
  color: #8a95a5;
  font: inherit;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.1;
}

.tab-bar .ti[aria-current="page"] {
  color: #1a73e8;
}

.tab-bar .ic {
  display: block;
  margin-bottom: 2px;
  font-size: 20px;
  line-height: 1;
}

.tab-bar .pub-btn {
  transform: translateY(-10px);
}

.tab-bar .pbi {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a73e8, #0d47a1);
  color: #ffffff;
  font-size: 24px;
  font-weight: 900;
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.35);
}