/* リセット・基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    min-height: 100vh;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

/* ヘッダー */
.header {
    background: #ffffff;
    color: #333;
    padding: 5px 20px;
    text-align: center;
}

.logo-img {
    width: 200px;
    height: auto;
    display: block;
    margin: 0 auto 10px auto;
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 400;
}

/* メインコンテンツ */
.main-content {
    padding: 30px 20px;
}

.hero-section {
    text-align: center;
}

.hero-icon {
    margin-bottom: 20px;
    text-align: center;
}

.hero-img {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 20px auto;
    border-radius: 10px;
}

.main-title {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 30px;
    color: #333;
}

.highlight {
    color: #4CAF50;
    background: linear-gradient(120deg, rgba(76, 175, 80, 0.2) 0%, rgba(76, 175, 80, 0.2) 100%);
    background-size: 100% 40%;
    background-repeat: no-repeat;
    background-position: 0 80%;
    padding: 0 4px;
}

/* 特徴セクション */
.features {
    margin: 30px 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    font-size: 16px;
    border-left: 4px solid #4CAF50;
}

.feature-icon {
    font-size: 20px;
}

/* CTA セクション */
.cta-section {
    margin: 40px 0;
}

.line-button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, #00C300 0%, #00A000 100%);
    color: white;
    padding: 18px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(0, 195, 0, 0.3);
    transition: all 0.3s ease;
    margin-bottom: 15px;
    position: relative;
    overflow: hidden;
}

.line-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 195, 0, 0.4);
}

.line-button:active {
    transform: translateY(0);
}

.line-icon {
    font-size: 24px;
    margin-right: 15px;
}

.button-text {
    flex: 1;
    text-align: left;
}

.button-text strong {
    font-size: 18px;
    display: block;
    margin-bottom: 2px;
}

.button-text small {
    font-size: 14px;
    opacity: 0.9;
}

.arrow {
    font-size: 20px;
    font-weight: bold;
    margin-left: 15px;
    transition: transform 0.3s ease;
}

.line-button:hover .arrow {
    transform: translateX(5px);
}

.cta-note {
    font-size: 12px;
    color: #666;
    text-align: center;
}

/* 信頼性セクション */
.trust-section {
    margin: 40px 0;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 15px;
    border: 1px solid #e9ecef;
}

.trust-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    text-align: center;
    color: #333;
}

.trust-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.trust-list li {
    font-size: 16px;
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
    color: #555;
}

.trust-list li:last-child {
    border-bottom: none;
}

/* フッター */
.footer {
    background: #f8f9fa;
    padding: 20px;
    text-align: center;
    border-top: 1px solid #e9ecef;
    color: #666;
    font-size: 14px;
}

.social-links {
    margin-top: 10px;
}

.social-link {
    color: #4CAF50;
    text-decoration: none;
    font-size: 14px;
}

.social-link:hover {
    text-decoration: underline;
}

/* =========================
   レスポンシブ（モバイル対応）
========================= */
@media (max-width: 480px) {
    .container {
        margin: 0;
        border-radius: 0;
    }

    .logo-img {
        width: 140px;
    }

    .main-content {
        padding: 20px 15px;
    }

    .main-title {
        font-size: 20px;
        margin-bottom: 20px;
    }

    .line-button {
        padding: 15px 20px;
    }

    .button-text strong {
        font-size: 16px;
    }

    .button-text small {
        font-size: 12px;
    }

    .feature-item {
        font-size: 14px;
        padding: 12px;
    }

    .trust-section {
        padding: 20px;
    }

    .trust-section h3 {
        font-size: 18px;
    }

    .trust-list li {
        font-size: 14px;
    }
}

/* 読み込みアニメーション */
.hero-section {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* パルス効果 */
.line-button {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 15px rgba(0, 195, 0, 0.3);
    }
    50% {
        box-shadow: 0 4px 15px rgba(0, 195, 0, 0.5);
    }
    100% {
        box-shadow: 0 4px 15px rgba(0, 195, 0, 0.3);
    }
}