/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

.bg-light {
    background-color: #f9f9f9;
}

.section-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 50px;
    color: #3a7a43; /* Logo Green */
}

.section-title span {
    font-size: 18px;
    font-weight: 400;
    color: #666;
}

/* Buttons */
.btn {
    display: inline-block;
    background-color: #b76856; /* Logo Brown/Orange */
    color: #fff;
    font-weight: 700;
    text-align: center;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn:hover {
    background-color: #9c5545;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

.btn-large {
    padding: 15px 40px;
    font-size: 18px;
    border-radius: 30px;
    box-shadow: 0 4px 10px rgba(183, 104, 86, 0.3);
}

/* Header */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav a {
    font-weight: 700;
    color: #555;
    transition: color 0.3s;
}

.nav a:hover {
    color: #3a7a43;
}

/* Hero Section */
.hero {
    /* 背景画像と、文字を読みやすくするための半透明の白オーバーレイを設定 */
    background: linear-gradient(rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.9)), url('55346751-1c12-4159-aee7-2f3cb5d9802d.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 120px 0;
    text-align: center;
}

.hero h2 {
    font-size: 36px;
    font-weight: 900;
    color: #333;
    line-height: 1.4;
    margin-bottom: 20px;
}

.hero-sub {
    font-size: 18px;
    color: #555;
    margin-bottom: 40px;
    line-height: 1.8;
}

/* Merits Section */
.merit-cards {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}

.merit-card {
    flex: 1;
    min-width: 280px;
    background: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    text-align: center;
    border-top: 5px solid #3a7a43;
    transition: transform 0.3s ease;
}

.merit-card:hover {
    transform: translateY(-5px);
}

.merit-icon {
    width: 60px;
    height: 60px;
    background-color: #e8f2e9;
    color: #3a7a43;
    font-size: 24px;
    font-weight: 900;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.merit-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
    line-height: 1.4;
}

.merit-card p {
    font-size: 15px;
    color: #666;
    text-align: left;
}

/* Guide Section */
.guide-intro {
    text-align: center;
    margin-bottom: 40px;
    color: #555;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 24px;
    width: 2px;
    background-color: #ddd;
}

.timeline-item {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.timeline-number {
    width: 50px;
    height: 50px;
    background-color: #3a7a43;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 900;
    z-index: 1;
    flex-shrink: 0;
    box-shadow: 0 0 0 5px #f9f9f9;
}

.timeline-content {
    margin-left: 30px;
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    width: 100%;
}

.timeline-content h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.timeline-content p {
    font-size: 15px;
    color: #666;
}

.highlight-step .timeline-number {
    background-color: #b76856;
}
.highlight-step .timeline-content {
    border: 2px solid #b76856;
}
.highlight-step .timeline-content h3 {
    color: #b76856;
}

.cta-bottom {
    text-align: center;
    margin-top: 60px;
}

.cta-bottom p {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #333;
}

/* Footer */
.footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 40px 0;
}

.footer-logo {
    display: block;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer p {
    font-size: 14px;
    color: #aaa;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        justify-content: center;
        height: auto;
        padding: 15px 0;
    }
    
    .nav ul {
        margin-top: 15px;
        gap: 15px;
        font-size: 14px;
    }

    .hero h2 {
        font-size: 24px;
    }

    .hero-sub {
        font-size: 15px;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-number {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .timeline-content {
        margin-left: 20px;
        padding: 15px;
    }
}