/* ====================================
   レスポンシブデザイン
==================================== */
@media screen and (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section {
        padding: 4rem 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    body,
    html {
        width: 100%;
        overflow-x: hidden;
        position: relative;
    }

    .container {
        width: 100%;
        padding-left: 10px;
        padding-right: 10px;
    }

    .navbar-burger {
        display: block;
    }

    .navbar-menu {
        display: none;
    }

    .navbar-menu.is-active {
        display: block;
        position: absolute;
        width: 100%;
    }

    .process-step {
        margin-bottom: 2rem;
    }

    .step-number {
        left: 50%;
        transform: translateX(-50%);
    }

    .flow-line {
        display: none;
    }

    .step-features {
        flex-direction: column;
        align-items: center;
    }

    .hero-video-slide {
        background-image: url('img/hero1.jpg') !important;
        background-position: center center;
        background-size: contain;
        background-repeat: no-repeat;
        background-color: #000;
    }

    .hero-video {
        display: block;
        object-position: center;
    }

    .feature-box {
        padding: 30px 15px;
        margin-bottom: 20px;
    }

    .feature-icon {
        width: 70px;
        height: 70px;
        font-size: 26px;
        margin-bottom: 20px;
    }

    .feature-title {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }

    .feature-text {
        font-size: 0.9rem;
    }

    .terms-section iframe {
        height: 400px !important;
        min-height: 400px;
        max-height: 400px;
    }

    .lightbox-content {
        max-width: 95vw;
        max-height: 85vh;
    }

    .lightbox-nav {
        width: 45px;
        height: 45px;
        font-size: 16px;
    }

    .lightbox-prev {
        left: 15px;
    }

    .lightbox-next {
        right: 15px;
    }

    .close-lightbox {
        width: 35px;
        height: 35px;
        font-size: 16px;
        top: -10px;
        right: -10px;
    }

    .lightbox-counter {
        top: 10px;
        right: 10px;
        padding: 4px 8px;
        font-size: 0.8rem;
    }

    .gallery-image::after {
        font-size: 1.5rem;
    }

    #price .price-tag,
    #process .section-title,
    #price .section-title,
    #features .section-title {
        background: var(--elegant-green-gradient);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    #price .button.is-primary,
    #process .button {
        min-height: 48px;
    }
}

@media screen and (max-width: 480px) {
    .terms-section iframe {
        height: 350px !important;
        min-height: 350px;
        max-height: 350px;
    }
}

@media screen and (max-width: 1023px) {
    .navbar-menu.is-active {
        position: absolute;
        width: 100%;
        left: 0;
        top: var(--header-height);
        box-shadow: 0 8px 16px rgba(10, 10, 10, 0.1);
    }

    .navbar-burger {
        margin-right: 0.5rem;
    }
}