* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a {
    text-decoration: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    background-color: #f5f5f5;
    color: #2c2c2c;
    font-size: 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.profile-image-container {
    margin: 20px 0;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    overflow: hidden;
}

.profile-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.content-section {
    text-align: center;
    margin-bottom: 20px;
    padding: 0 15px;
    max-width: 600px;
    width: 90%;
    word-break: break-all;
}

.content-section h1 {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 12px;
}

.content-section p {
    font-size: 18px;
    font-weight: bold;
    line-height: 1.9;
    text-align: justify;
}

.features-list {
    background: #fff;
    border-radius: 8px;
    padding: 1.5em;
    margin: 1.5em 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    list-style: none;
}

.features-list li {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 0.8em;
}

.highlight-promo {
    font-size: 1.2em;
    font-weight: bold;
    color: #e60012;
    text-align: center;
    margin: 1.5em 0;
}

.highlight-text {
    color: #e60012;
    font-weight: bold;
}

.action-button {
    display: block;
    width: 90%;
    max-width: 600px;
    margin: 12px auto;
    padding: 12px;
    font-size: 18px;
    font-weight: bold;
    background-color: #06c755;
    color: #111;
    border: 2px solid #06c755;
    border-radius: 30px;
    cursor: pointer;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.action-button:hover,
.action-button:active {
    background-color: #05b44d;
    color: #fff;
    border-color: #05b44d;
}

.action-button span {
    font-size: 0.7em;
    opacity: 0.8;
}

.promo-banner {
    width: 90%;
    max-width: 600px;
    margin: 10px 0;
}

.promo-banner img {
    width: 100%;
    border-radius: 10px;
}

.fixed-action-button {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 600px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background-color: #06c755;
    color: #111;
    border: 2px solid #06c755;
    border-radius: 30px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(6, 199, 85, 0.3);
    animation: float 2s ease-in-out infinite;
}

.fixed-action-button:hover,
.fixed-action-button:active {
    background-color: #05b44d;
    color: #fff;
    border-color: #05b44d;
}

.fixed-action-button img {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    object-fit: cover;
}

.fixed-action-button span div:first-child {
    font-size: 1em;
}

.fixed-action-button span div:last-child {
    font-size: 0.7em;
    opacity: 0.8;
}

.privacy-policy-link {
    font-size: 16px;
    color: #000;
    margin: 2rem 0 100px;
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 9999;
}

.modal-window {
    background-color: #fff;
    margin: 10% auto;
    padding: 20px;
    border-radius: 10px;
    width: 80%;
    max-width: 600px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 26px;
    cursor: pointer;
    color: #333;
}

.modal-policy-content {
    max-height: 60vh;
    overflow-y: auto;
    padding-right: 10px;
}

@media (max-width: 768px) {
    .content-section h1 {
        font-size: 24px;
    }

    .content-section p {
        font-size: 16px;
    }

    .action-button,
    .fixed-action-button {
        font-size: 16px;
        padding: 10px;
    }

    .fixed-action-button img {
        width: 44px;
        height: 44px;
    }
}

@keyframes float {
    0% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
    100% { transform: translateX(-50%) translateY(0); }
}