.landscape-guard {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.88);
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.landscape-guard__inner {
    padding: 40px 32px;
    max-width: 320px;
}

.landscape-guard i {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: #4dd0e1;
}

.landscape-guard__title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
}

.landscape-guard__sub {
    font-size: 0.88rem;
    opacity: 0.75;
    line-height: 1.7;
}

/* スマホ（縦横問わず） */
@media (max-width: 599px) {
    .landscape-guard { display: flex; }
    .landscape-guard__phone { display: block; }
    .landscape-guard__tablet { display: none; }
}

/* タブレット縦向き */
@media (orientation: portrait) and (min-width: 600px) and (max-width: 1024px) {
    .landscape-guard { display: flex; }
    .landscape-guard__phone { display: none; }
    .landscape-guard__tablet { display: block; }
}

@keyframes lg-rotate {
    0%   { transform: rotate(0deg); }
    40%  { transform: rotate(-90deg); }
    60%  { transform: rotate(-90deg); }
    100% { transform: rotate(0deg); }
}

.landscape-guard__tablet i {
    animation: lg-rotate 2.4s ease-in-out infinite;
    display: inline-block;
}