.discord-promo-container {
    width: 100%;
    max-width: 1588px;
    margin: 0 auto;
    padding: 0;
    padding-bottom: 20px;
    font-family: 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
    color: #333;
    background-color: #f7f9fc;
}

h2.caption-date {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}

.discord-banner {
    position: relative;
    width: 100%;
    margin-bottom: 40px;
}

.discord-banner img {
    width: 100%;
    height: auto;
    border-radius: 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: block;
}

.banner-overlay-text {
    width: 100%;
    text-align: center;
    color: #333;
    margin-top: 50px;
}

.overlay-title {
    font-size: clamp(1.2rem, 3vw, 2.2rem);
    color: #2c3e50;
    margin-bottom: 5px;
    font-weight: bold;
    letter-spacing: 0.05em;
}

.overlay-subtitle {
    font-size: clamp(0.75rem, 1.5vw, 1.1rem);
    color: #444;
    line-height: 1.6;
    margin: 0;
}

.overlay-highlight {
    color: #7289da;
    font-weight: bold;
    border-bottom: 2px solid #7289da;
}

.discord-section {
    background: #fff;
    border-radius: 20px;
    padding: 40px 20px;
    margin: 0 20px 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    text-align: center;
}

.secondary-bg {
    background: linear-gradient(to bottom, #f0f4ff, #e6ecfc);
}

.section-title {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: bold;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 40px;
    line-height: 1.6;
}

.highlight {
    color: #7289da;
    font-weight: bold;
    border-bottom: 2px solid #7289da;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media screen and (max-width: 992px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 600px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    background: #fff;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.04);
    text-align: left;
    transition: transform 0.2s;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(88, 101, 242, 0.15);
}

.card-image-area {
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #fff;
    margin-bottom: 15px;
    overflow: hidden;
    position: relative;
}

.card-image-area img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    position: relative;
    z-index: 2;
}

.card-image-area i {
    position: absolute;
    z-index: 1;
}

.card-title {
    display: flex;
    align-items: center;
    gap: 8px;

    font-size: 1.2rem;
    /* お好みで調整 */
    font-weight: bold;
    line-height: 1.4;
    margin-bottom: 8px;
    color: #333;
}

.heading-icon {
    width: 50px;
    /* 文字サイズに連動 */
    object-fit: contain;

    flex-shrink: 0;
    /* アイコンが潰れないように */
}

.card-desc {
    color: #666;
    line-height: 1.5;
}

/* Atmosphere Section */
.atmosphere-header {
    margin-bottom: 30px;
}

.section-subtitle-small {
    font-size: 1rem;
    color: #666;
    margin-top: 5px;
}

.atmosphere-content {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.shorts-placeholder {
    flex: 1;
    min-width: 250px;
    background: #fff;
    border-radius: 16px;
    padding: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 400px;
    position: relative;
}

.shorts-inner {
    text-align: center;
    color: #ff0000;
    font-weight: bold;
}

.play-btn {
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 20px auto;
}

.atmosphere-thumbnails {
    flex: 1;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.atm-thumb {
    background: #fff;
    border-radius: 12px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.atm-img {
    height: 100px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin-bottom: 10px;
}

.atm-label {
    font-weight: bold;
    font-size: 0.95rem;
    color: #333;
}

/* Info Banners */
.info-section-header {
    text-align: center;
    margin-top: 10px;
    margin-bottom: 30px;
}

.info-section-header .section-title {
    margin-bottom: 10px;
}

.info-section-header .section-subtitle {
    margin-bottom: 0;
}

.info-banners {
    display: flex;
    gap: 15px;
    margin: 0 20px 40px;
    flex-wrap: wrap;
}

.info-banner-item {
    flex: 1;
    min-width: 250px;
    background: #fff;
    border-radius: 12px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.info-banner-featured {
    padding: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow: hidden;
}

.info-banner-img {
    width: 80%;
    display: block;
    margin: 15px auto 0;
    border-radius: 8px;
}

.info-banner-body {
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.info-icon {
    font-size: 2rem;
}

.info-text h4 {
    margin: 0 0 5px 0;
    font-size: 1.05rem;
    color: #333;
}

.info-text p {
    text-align: left;
    margin: 0;
    font-size: 0.85rem;
    color: #666;
}

/* Join area */
.join-action-area {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(161, 196, 253, 0.4);
    margin: 0 20px 20px;
}

.btn-join-discord {
    display: inline-block;
    background-color: #5865F2;
    color: white;
    padding: 18px 40px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.4rem;
    transition: 0.3s;
    box-shadow: 0 6px 20px rgba(88, 101, 242, 0.4);
}

.btn-join-discord:hover {
    background-color: #4752C4;
    transform: scale(1.05);
    color: #fff;
}

.arrow-icon {
    margin-left: 10px;
}

.join-note {
    margin-top: 15px;
    font-size: 0.95rem;
    color: #1e3a8a;
    font-weight: bold;
}

/* Video Section */
.discord-video-section {
    text-align: center;
    margin-top: 40px;
    margin-bottom: 40px;
    padding: 0 20px;
}

.discord-video-section .section-title {
    margin-bottom: 20px;
}

.discord-video-container {
    max-width: 800px;
    margin: 0 auto;
}

.discord-video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.discord-video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.discord-calendar-container {
    max-width: 1200px;
    width: 100%;
    margin: 40px auto 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    background: #fff;
}

.discord-calendar-container iframe {
    width: 100%;
    height: 600px;
    display: block;
    max-width: 100%;
}

/* Media queries */
@media screen and (max-width: 768px) {
    .discord-promo-container {
        padding-bottom: 10px;
    }

    .discord-calendar-container {
        margin: 20px auto 0;
    }

    .discord-calendar-container iframe {
        height: 450px;
    }

    .discord-banner {
        margin-bottom: 20px;
    }

    .banner-overlay-text {
        margin-top: 10px;
        padding: 15px 10px 0;
    }

    .overlay-title {
        font-size: 1.6rem;
    }

    .overlay-subtitle {
        text-align: left;
        font-size: 0.95rem;
        width: 80%;
        margin: 0 auto;
    }

    .discord-section {
        padding: 25px 15px;
        margin: 0 10px 20px;
    }

    .info-banners,
    .join-action-area {
        margin-left: 10px;
        margin-right: 10px;
    }

    .atmosphere-content {
        flex-direction: column;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        text-align: left;
        width: 85%;
        margin: 0 auto;
    }
}

/* Speech Bubble */
.speech-bubble {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
}

.speech-icon {
    flex-shrink: 0;
}

.speech-icon img {
    width: 60px;
    height: auto;
    object-fit: contain;
}

.speech-text {
    position: relative;
    background: #e0f2fe;
    padding: 12px 18px;
    border-radius: 15px;
    color: #333;
    font-size: 0.9rem;
    line-height: 1.5;
    font-weight: bold;
    text-align: left;
}

.speech-text::after {
    content: '';
    position: absolute;
    top: 50%;
    left: -10px;
    transform: translateY(-50%);
    border-width: 10px 15px 10px 0;
    border-style: solid;
    border-color: transparent #e0f2fe transparent transparent;
}

/* Calendar Popup Button */
.calendar-popup-area {
    text-align: center;
    margin-top: 20px;
    margin-bottom: 20px;
}

.btn-cute-calendar {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
    color: #fff !important;
    font-weight: bold;
    font-size: 1.15rem;
    padding: 14px 40px;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(166, 193, 238, 0.5);
    transition: all 0.3s ease;
    border: 3px solid #fff;
}

.btn-cute-calendar:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 25px rgba(166, 193, 238, 0.7);
    color: #fff !important;
}

.btn-cute-calendar i {
    font-size: 1.3rem;
}