:root {
    --primary-color: #005A9C;
    --secondary-color: #FF7F00;
    --dark-color: #1a202c;
    --light-color: #f7fafc;
    --gray-color: #718096;
    --bg-light-blue: #e6f7ff;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    margin: 0;
    color: var(--dark-color);
    line-height: 1.8;
    background-color: white;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background-color: white;
    padding: 15px 0;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-logo {
    height: 60px;
}
.header-cta-button {
    background-color: var(--secondary-color);
    color: white;
    font-weight: bold;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 50px;
    transition: background-color 0.3s;
}
.header-cta-button:hover {
    background-color: #e07000;
}

/* Hero Section */
.hero {
    background-color: var(--bg-light-blue);
    padding: 80px 0;
}
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
}
.hero-text h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1.4;
    margin: 0 0 20px 0;
}
.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 30px;
}
.hero-image img {
    max-width: 100%;
    height: auto;
}
.hero-note {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-top: 15px;
}

/* CTA Button */
.cta-button {
    display: inline-block;
    background: linear-gradient(90deg, var(--secondary-color), #f99839);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    padding: 18px 40px;
    border-radius: 50px;
    box-shadow: 0 5px 15px rgba(255, 127, 0, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}
.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 127, 0, 0.4);
}
.cta-button i {
    margin-left: 10px;
}

/* Section Title */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.4;
}
.section-title span {
    background: linear-gradient(transparent 60%, var(--secondary-color) 60%);
    padding: 0 5px;
}
.section-subtitle {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px auto;
    color: var(--gray-color);
}

/* Problem Section */
.problem-section {
    padding: 100px 0;
}
.problem-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.problem-card {
    background-color: var(--light-color);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid #e2e8f0;
}
.problem-card .card-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}
.problem-card h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin: 0 0 10px 0;
}
.problem-card .huge-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    color: var(--secondary-color);
}
.problem-card .small-text {
    font-size: 1.5rem;
}

/* Solution Section */
.solution-section {
    padding: 100px 0;
    background-color: var(--bg-light-blue);
}
.solution-box {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
    background-color: white;
    padding: 50px;
    border-radius: 15px;
}
.solution-image img {
    max-width: 100%;
    border-radius: 10px;
}
.solution-text h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0;
}
.solution-text ul {
    list-style: none;
    padding: 0;
}
.solution-text li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}
.solution-text i {
    color: var(--success-color);
    margin-right: 15px;
    font-size: 1.2rem;
    margin-top: 5px;
}

/* Process Section */
.process-section {
    padding: 100px 0;
}
.process-steps {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 20px;
    align-items: center;
}
.step-card {
    text-align: center;
}
.step-number {
    background-color: var(--primary-color);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    margin: 0 auto 15px auto;
}
.step-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}
.step-arrow {
    font-size: 2rem;
    color: var(--gray-color);
    opacity: 0.5;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background-color: var(--bg-light-blue);
    text-align: center;
}
.cta-title {
    font-size: 2rem;
    margin: 0 0 15px 0;
}
.cta-box {
    background: white;
    max-width: 600px;
    margin: 40px auto 0 auto;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    text-align: left;
}
.cta-box h3 {
    text-align: center;
    margin: 0 0 30px 0;
    font-size: 1.5rem;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}
.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box; /* Important */
}
.cta-button-submit {
    width: 100%;
    background-color: var(--secondary-color);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    padding: 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}
.cta-button-submit:hover {
    background-color: #e07000;
}
.form-note {
    font-size: 0.8rem;
    text-align: center;
    color: var(--gray-color);
    margin-top: 20px;
}

/* FAQ Section */
.faq-section {
    padding: 100px 0;
}
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    border-bottom: 1px solid #e2e8f0;
}
.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 25px 0;
    text-align: left;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-question i {
    transition: transform 0.3s;
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out, padding 0.4s ease-in-out;
}
.faq-answer p {
    margin: 0;
    padding: 0 15px 25px 15px;
    color: var(--gray-color);
}
.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* Footer */
.footer {
    background-color: var(--dark-color);
    color: #a0aec0;
    padding: 40px 0;
}
.footer-container {
    text-align: center;
}
.footer-logo {
    height: 40px;
    filter: brightness(0) invert(1);
    opacity: 0.8;
    margin-bottom: 20px;
}
.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
}
.copyright {
    margin-top: 20px;
    font-size: 0.9rem;
}

/* Responsive Styles */
@media (max-width: 900px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-image {
        grid-row: 1;
        margin-bottom: 40px;
    }
    .problem-cards {
        grid-template-columns: 1fr;
    }
    .solution-box {
        grid-template-columns: 1fr;
    }
    .process-steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .step-arrow {
        display: none;
    }
}
@media (max-width: 768px) {
    .header-cta-button {
        display: none;
    }
    .header-logo {
        margin: 0 auto;
    }
    .section-title {
        font-size: 2rem;
    }
}

/* --- Thank You Message --- */
.thank-you-content {
    text-align: center;
}
.thank-you-content i {
    font-size: 3.5rem;
    color: var(--success-color);
    margin-bottom: 25px;
}
.thank-you-content h3 {
    font-size: 1.5rem;
    margin: 0 0 15px 0;
}
.thank-you-content p {
    color: var(--gray-color);
    line-height: 1.8;
}

/* --- Utility Class --- */
.hidden {
    display: none !important;
}
/* CTA Section 内のラジオボタンの配置を修正 */
.cta-box .form-group .radio-group label {
    display: flex; /* Flexboxを使って内容を横並びに */
    align-items: center; /* 垂直方向の中央揃え */
    gap: 5px; /* ラジオボタンとテキストの間に少しスペース */
    margin-bottom: 0; /* 下部の余白をなくす */
}

.cta-box .form-group .radio-group input[type="radio"] {
    width: auto; /* ラジオボタンの幅を自動調整 */
    margin-right: 0; /* デフォルトの右マージンをリセット */
}