*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary-color: #2d6a4f;--secondary-color: #40916c;--accent-color: #52b788;--bg-color: #f8f9fa;--text-color: #343a40;--heading-font-color: #1b4332;--border-color: #dee2e6;--card-bg-color: #ffffff;--footer-bg-color: #1b4332;--footer-text-color: #f8f9fa;--font-family: "Merriweather", "Noto Serif JP", serif;--line-height: 1.7;--transition-speed: .3s ease;--border-radius: 8px;--shadow: 0 4px 12px rgba(0, 0, 0, .08);--shadow-hover: 0 6px 16px rgba(0, 0, 0, .12)}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-family);line-height:var(--line-height);color:var(--text-color);background-color:var(--bg-color);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}img{max-width:100%;display:block}h1,h2,h3,h4,h5,h6{font-family:var(--font-family);color:var(--heading-font-color);line-height:1.3;margin-bottom:1rem;font-weight:700}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}p{margin-bottom:1.5rem}a{color:var(--accent-color);text-decoration:none;transition:color var(--transition-speed)}a:hover,a:focus{color:var(--primary-color);text-decoration:underline}.main-header{background-color:var(--card-bg-color);padding:1rem 0;border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:1000;box-shadow:0 2px 8px #0000000d}.main-header .container{display:flex;justify-content:space-between;align-items:center}.site-title a{font-size:1.5rem;font-weight:700;color:var(--primary-color);text-decoration:none}.main-nav ul{list-style:none;display:flex;gap:1.5rem}.main-nav a{font-weight:700;font-size:1rem;color:var(--secondary-color);text-decoration:none;padding:.5rem 0;position:relative}.main-nav a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background-color:var(--accent-color);transition:width var(--transition-speed)}.main-nav a:hover:after,.main-nav a.active:after{width:100%}.main-nav a:hover,.main-nav a.active{color:var(--primary-color)}.nav-toggle{display:none;font-size:1.5rem;background:none;border:none;color:var(--primary-color);cursor:pointer}.hero{background:linear-gradient(#1b43321a,#1b43321a),var(--bg-color);color:var(--heading-font-color);text-align:center;padding:4rem 1.5rem;border-bottom:1px solid var(--border-color)}.hero h1{font-size:3rem;margin-bottom:1rem}.hero p{font-size:1.25rem;max-width:700px;margin:0 auto;opacity:.9}.main-content{padding:3rem 0}.main-grid{display:grid;grid-template-columns:1fr;gap:2rem}@media(min-width:992px){.main-grid,.article-grid{grid-template-columns:3fr 1fr}}.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}.article-card{background-color:var(--card-bg-color);border:1px solid var(--border-color);border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow);transition:transform var(--transition-speed),box-shadow var(--transition-speed);display:flex;flex-direction:column}.article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}.card-content{padding:1.5rem;flex-grow:1;display:flex;flex-direction:column}.card-content h3{font-size:1.25rem;min-height:55px}.card-content h3 a{text-decoration:none;color:var(--heading-font-color)}.card-content h3 a:hover{color:var(--accent-color)}.card-content p{flex-grow:1;margin-bottom:1rem}.btn{display:inline-block;padding:.75rem 1.5rem;background-color:var(--primary-color);color:#fff;text-decoration:none;border-radius:var(--border-radius);font-weight:700;transition:background-color var(--transition-speed),transform var(--transition-speed);text-align:center}.btn:hover{background-color:var(--accent-color);color:#fff;transform:translateY(-2px);text-decoration:none}.sidebar-widget{background-color:var(--card-bg-color);padding:1.5rem;border:1px solid var(--border-color);border-radius:var(--border-radius);margin-bottom:2rem}.sidebar-widget h3{border-bottom:2px solid var(--primary-color);padding-bottom:.5rem;margin-bottom:1rem}.sidebar-widget ul{list-style:none;padding-left:0}.sidebar-widget li{margin-bottom:.75rem}.sidebar-widget li a:before{content:"🌿";margin-right:.5rem;color:var(--primary-color)}.article-full{background-color:var(--card-bg-color);padding:2rem;border-radius:var(--border-radius);border:1px solid var(--border-color)}.article-header{text-align:center;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.article-header h1{font-size:2.8rem}.article-meta{color:#6c757d;font-style:italic}.article-meta span{margin:0 .5rem}.article-content{font-size:1.1rem}.article-content h2{margin-top:2rem;border-bottom:2px solid var(--accent-color);padding-bottom:.5rem}.article-content ul,.article-content ol{margin-bottom:1.5rem;padding-left:1.5rem}.cta-section{background-color:var(--bg-color);text-align:center;padding:2rem;margin-top:2rem;border-radius:var(--border-radius);border:1px dashed var(--accent-color)}blockquote{border-left:4px solid var(--accent-color);padding:1rem 1.5rem;margin:1.5rem 0;background-color:var(--bg-color);font-style:italic;border-radius:0 var(--border-radius) var(--border-radius) 0}.main-footer{background-color:var(--footer-bg-color);color:var(--footer-text-color);padding:3rem 0;margin-top:3rem}.footer-grid{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;text-align:center;gap:1.5rem}.footer-copyright,.footer-links,.footer-back-to-top{flex:1 1 100%}.footer-links a{color:var(--footer-text-color);margin:0 .75rem}.footer-links a:hover{color:var(--accent-color)}.footer-back-to-top a{color:var(--accent-color);font-weight:700}@media(min-width:768px){.footer-grid{text-align:left}.footer-copyright{flex:1;text-align:left}.footer-links{flex:2;text-align:center}.footer-back-to-top{flex:1;text-align:right}}@media(max-width:991px){.main-nav{display:none;position:absolute;top:100%;left:0;width:100%;background-color:var(--card-bg-color);box-shadow:0 4px 8px #0000001a;border-top:1px solid var(--border-color)}.main-nav.active{display:block}.main-nav ul{flex-direction:column;padding:1rem;gap:0}.main-nav li{width:100%}.main-nav a{display:block;padding:1rem;text-align:center;border-bottom:1px solid var(--border-color)}.main-nav li:last-child a{border-bottom:none}.main-nav a:after{display:none}.nav-toggle{display:block}h1{font-size:2.2rem}.hero h1{font-size:2.5rem}}@media(max-width:767px){.articles-grid{grid-template-columns:1fr}}