.plugin-nav { position: relative; padding-bottom: 14px; margin-bottom: -14px; }
.plugin-nav summary {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 44px;
    cursor: pointer;
    list-style: none;
}
.plugin-nav summary::-webkit-details-marker { display: none; }
.plugin-nav summary::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    height: 2px;
    border-radius: 999px;
    background: transparent;
}
.plugin-nav[open] summary::after { background: rgba(24, 27, 31, 0.9); }
.plugin-nav-menu {
    position: absolute;
    top: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    width: max-content;
    min-width: 144px;
    max-width: calc(100vw - 32px);
    padding: 8px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(251, 250, 246, 0.94));
    border: 1px solid rgba(23, 26, 31, 0.08);
    border-radius: 18px;
    box-shadow: 0 18px 34px rgba(28, 31, 36, 0.12);
    z-index: 20;
}
.plugin-nav-menu::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 100%;
    height: 18px;
}
.nav-links .plugin-nav-menu a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.4;
    white-space: nowrap;
}
.nav-links .plugin-nav-menu a::after { display: none; }
.nav-links .plugin-nav-menu a:hover { background: var(--bili-blue-soft); }
.plugin-nav summary:focus-visible,
.plugin-nav-menu a:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.plugin-catalog { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.plugin-catalog .plugin-action { display: block; }
.plugin-catalog h2 { font-size: clamp(20px, 2.5vw, 28px); margin: 0 0 14px; }
.plugin-catalog p { color: var(--muted); line-height: 1.8; font-weight: 400; }
@media (max-width: 640px) {
    .plugin-nav summary { min-height: 34px; }
    .plugin-nav-menu { left: 0; transform: none; }
    .plugin-catalog { grid-template-columns: 1fr; }
}