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

body {
    font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.75;
    color: #242424;
    background-color: #fefefe;
    font-size: 16px;
    font-weight: 400;
}

.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 0 24px;
}

.wide-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background-color: #fefefe;
    border-bottom: 1px solid #e6e6e6;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(254, 254, 254, 0.95);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    text-decoration: none;
    color: #242424;
    letter-spacing: -0.02em;
}

.hero {
    padding: 120px 0 100px;
    background-color: #fefefe;
    text-align: center;
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 32px;
    color: #242424;
    letter-spacing: -0.04em;
    line-height: 1.1;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 22px;
    color: #6b6b6b;
    margin-bottom: 48px;
    font-weight: 400;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.btn {
    display: inline-block;
    padding: 16px 32px;
    background-color: #1a8917;
    color: white;
    text-decoration: none;
    border-radius: 24px;
    transition: all 0.2s ease;
    font-weight: 500;
    font-size: 16px;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #0f7b0c;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 137, 23, 0.3);
}

.features {
    padding: 100px 0;
    background-color: #fefefe;
}

.section-title {
    font-size: 36px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 64px;
    color: #242424;
    letter-spacing: -0.02em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 48px;
    margin-top: 64px;
}

.feature-card {
    padding: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    text-align: left;
    border-left: 3px solid #1a8917;
    padding-left: 24px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #242424;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 18px;
    color: #6b6b6b;
    line-height: 1.6;
    font-weight: 400;
}

.content-section {
    padding: 100px 0;
    background-color: #fefefe;
}

.article-content {
    font-size: 20px;
    line-height: 1.8;
    color: #242424;
    margin-bottom: 32px;
}

.article-content h2 {
    font-size: 32px;
    font-weight: 600;
    margin: 48px 0 24px 0;
    color: #242424;
    letter-spacing: -0.02em;
}

.article-content p {
    margin-bottom: 24px;
}

.quote {
    border-left: 4px solid #1a8917;
    padding-left: 24px;
    margin: 32px 0;
    font-style: italic;
    font-size: 22px;
    color: #6b6b6b;
}

footer {
    background-color: #f8f9fa;
    border-top: 1px solid #e6e6e6;
    color: #6b6b6b;
    padding: 64px 0;
    text-align: center;
}

footer p {
    font-size: 14px;
    font-weight: 400;
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .wide-container {
        padding: 0 20px;
    }

    .hero h1 {
        font-size: 40px;
        margin-bottom: 24px;
    }

    .hero p {
        font-size: 20px;
        margin-bottom: 40px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .section-title {
        font-size: 28px;
        margin-bottom: 48px;
    }

    .article-content {
        font-size: 18px;
    }

    .article-content h2 {
        font-size: 28px;
    }
}