:root {
    --primary: #1b4b72;
    --primary-dark: #12324d;
    --secondary: #27ae60;
    --accent: #f39c12;
    --bg: #ffffff;
    --card: #f8f9fa;
    --text: #111111;
    --text-light: #333333;
    --border: #e0e0e0;
}

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

/* スマホでもPCでも自然な改行になるように設定 */
body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.8;
    font-size: 20px;
    word-break: keep-all;
    /* 単語の途中での不自然な改行を防ぐ */
    overflow-wrap: break-word;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* まとまりで改行させるための工夫 */
.text-chunk {
    display: inline-block;
}

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

.lead-text {
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 30px;
}

.highlight {
    color: var(--primary);
}

.highlight-inline {
    color: #c0392b;
    font-weight: 900;
    font-size: 1.3rem;
    display: block;
    margin-bottom: 10px;
}

/* アイコン用の巨大フォント設定 (PC用: 大幅に拡大) */
.icon-large {
    font-size: 8rem;
    /* 160px相当。圧倒的な見やすさ */
    margin-bottom: 25px;
    /* マージンを広げる */
    line-height: 1;
}

/* Header */
.header {
    background: #fff;
    padding: 15px 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
}

.logo-icon-img {
    height: 100px;
    width: auto;
}

.header-cta {
    background: var(--secondary);
    color: #fff;
    padding: 12px 20px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
    padding: 80px 0;
    text-align: center;
}

.hero-title {
    font-size: 2.8rem;
    margin-bottom: 25px;
    line-height: 1.5;
    font-weight: 900;
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 50px;
    font-weight: bold;
    color: var(--text-light);
}

.cta-button {
    display: inline-block;
    background: var(--secondary);
    color: #fff;
    font-size: 1.5rem;
    font-weight: bold;
    padding: 20px 40px;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(39, 174, 96, 0.4);
    transition: transform 0.2s;
    width: 100%;
    max-width: 400px;
}

.cta-button:hover {
    transform: translateY(-4px);
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 50px;
    color: var(--primary);
    border-bottom: 5px solid var(--accent);
    display: inline-block;
    padding-bottom: 10px;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
    font-weight: 900;
}

/* Core Supports */
.core-supports {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 30px;
}

.support-card {
    background: var(--bg);
    padding: 50px 20px;
    /* 上下パディングを広げる */
    border-radius: 15px;
    border: 3px solid var(--border);
    text-align: center;
}

.support-card h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.8rem;
    font-weight: 900;
}

.support-card p {
    font-weight: bold;
    font-size: 1.1rem;
}

/* Feature Boxes */
.feature-box {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    margin-bottom: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border-left: 10px solid var(--primary);
}

.feature-box h3 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 1.8rem;
    font-weight: 900;
    text-align: center;
}

.feature-box p {
    font-size: 1.2rem;
    font-weight: bold;
}

/* Guarantee/Offer */
.guarantee {
    background: #fff3e0;
}

.guarantee-box {
    background: #fff;
    padding: 60px 30px;
    border-radius: 20px;
    text-align: center;
    border: 5px solid var(--accent);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.offer-title {
    font-size: 1.8rem;
    font-weight: 900;
    color: #d35400;
    margin-bottom: 40px;
}

.guarantee-seal {
    padding: 30px;
    background: #fdf5e6;
    border: 3px dashed var(--accent);
    border-radius: 15px;
}

.guarantee-seal h4 {
    color: #c0392b;
    font-size: 2rem;
    margin-bottom: 15px;
    font-weight: 900;
}

.guarantee-seal p {
    font-size: 1.2rem;
    font-weight: bold;
}

.notice-text {
    display: block;
    margin-top: 15px;
    color: var(--text-light);
    font-size: 1rem;
}

/* Past Rewards */
.past-rewards {
    background: #f0fdf4;
}

.reward-list {
    list-style: none;
    max-width: 600px;
    margin: 0 auto;
    padding: 0;
}

.reward-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    padding: 25px;
    margin-bottom: 20px;
    border-radius: 15px;
    border-left: 8px solid var(--accent);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    font-size: 1.4rem;
    font-weight: bold;
}

.reward-date {
    color: var(--text);
}

.reward-amount {
    color: #c0392b;
    font-size: 2rem;
    font-weight: 900;
}

/* Voices */
.voices {
    background: #fff;
}

.voice-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.voice-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    position: relative;
    border: 1px solid #e0e0e0;
}

.voice-text {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-dark);
}

.voice-footer-text {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 30px;
    font-weight: bold;
}

/* Closing */
.closing {
    background: var(--primary);
    color: #fff;
}

.closing .section-title {
    color: #fff;
    border-bottom-color: #fff;
}

.line-step {
    text-align: center;
    margin-top: 50px;
}

.qr-img {
    width: 250px;
    height: 250px;
    margin: 0 auto 40px;
    display: block;
    border-radius: 15px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px 20px;
    background: var(--primary-dark);
    color: #fff;
    font-size: 1rem;
}

/* スマホ用の微調整 */
@media (max-width: 600px) {
    body {
        font-size: 18px;
        /* スマホでは少しだけフォントサイズを調整 */
    }

    /* スマホ用のアイコンサイズ調整 */
    .icon-large {
        font-size: 6rem;
        /* 108px相当に縮小。スマホでも見やすい */
        margin-bottom: 20px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .reward-list li {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .section-title {
        font-size: 1.8rem;
    }
}