.home-lock {
    position: fixed;
    bottom: 18px;
    left: 20px;
    z-index: 100;
    opacity: 0.35;
    transition: opacity 0.35s;
}

.home-lock:hover,
.home-lock:focus-within {
    opacity: 0.9;
}

.home-lock label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    user-select: none;
    font-size: 12px;
    min-height: 44px;
    padding: 8px 14px 8px 10px;
    border-radius: 22px;
    border: 1px solid rgba(128, 128, 128, 0.25);
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #555;
    margin: 0;
    touch-action: manipulation;
}

.home-lock label:focus-within {
    outline: 2px solid rgba(90, 90, 140, 0.55);
    outline-offset: 2px;
}

.home-lock input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.home-lock .lock-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    line-height: 1;
    transition: transform 0.25s;
}

.home-lock .lock-icon svg {
    width: 16px;
    height: 16px;
    display: block;
}

.home-lock input:checked + .lock-icon {
    transform: rotate(-45deg);
}

.home-lock input:checked ~ .lock-text {
    font-weight: 600;
}

/* 粒子主页深色背景 */
body.particle-home .home-lock label {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.18);
    color: rgba(255, 255, 255, 0.85);
}

body.particle-home .home-lock label:focus-within {
    outline-color: rgba(255, 255, 255, 0.55);
}

@media (max-width: 768px) {
    .home-lock {
        bottom: calc(14px + env(safe-area-inset-bottom, 0));
        left: 12px;
    }

    .home-lock .lock-text {
        display: none;
    }

    .home-lock label {
        min-width: 44px;
        min-height: 44px;
        padding: 0;
        justify-content: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    .home-lock,
    .home-lock .lock-icon {
        transition: none;
    }
}