:root{--primary-color: #333333;--secondary-color: #666666;--accent-color: #007acc;--background-color: #ffffff;--text-color: #333333;--border-color: #e0e0e0;--hover-color: #f5f5f5}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;line-height:1.6;color:var(--text-color);background-color:var(--background-color)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.header{position:sticky;top:0;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);z-index:100}.navigation{padding:1rem 0}.nav-container{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center}.site-title{text-decoration:none;color:var(--primary-color)}.site-title h1{font-size:1.5rem;font-weight:700}.nav-menu{display:flex;list-style:none;gap:2rem}@media (max-width: 768px){.nav-menu{display:none}}.nav-link{text-decoration:none;color:var(--secondary-color);font-weight:500;transition:color 0.3s ease}.nav-link:hover{color:var(--accent-color)}.language-switcher{display:flex;align-items:center;gap:0.5rem}.language-switcher .lang-link{text-decoration:none;color:var(--secondary-color);font-size:0.9rem}.language-switcher .lang-link.active{color:var(--accent-color);font-weight:600}.language-switcher .lang-separator{color:var(--border-color)}.mobile-menu-button{display:none;flex-direction:column;background:none;border:none;cursor:pointer;padding:0.5rem}@media (max-width: 768px){.mobile-menu-button{display:flex}}.mobile-menu-button .hamburger-line{width:20px;height:2px;background-color:var(--primary-color);margin:2px 0;transition:0.3s}section{padding:4rem 0}.section-title{font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:3rem;color:var(--primary-color)}.hero-section{background:linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);min-height:70vh;display:flex;align-items:center;justify-content:center;text-align:center}.hero-content{max-width:600px;padding:0 20px}.hero-title{font-size:3rem;font-weight:700;margin-bottom:1rem;color:var(--primary-color)}@media (max-width: 768px){.hero-title{font-size:2rem}}.hero-subtitle{font-size:1.2rem;color:var(--secondary-color);margin-bottom:2rem}.hero-buttons{display:flex;gap:1rem;justify-content:center}@media (max-width: 768px){.hero-buttons{flex-direction:column;align-items:center}}.btn{display:inline-block;padding:0.75rem 1.5rem;text-decoration:none;border-radius:5px;font-weight:600;transition:all 0.3s ease;border:2px solid transparent;cursor:pointer}.btn.btn-primary{background-color:var(--accent-color);color:white}.btn.btn-primary:hover{background-color:#005c99}.btn.btn-secondary{background-color:transparent;color:var(--accent-color);border-color:var(--accent-color)}.btn.btn-secondary:hover{background-color:var(--accent-color);color:white}.btn.btn-outline{background-color:transparent;color:var(--primary-color);border-color:var(--border-color)}.btn.btn-outline:hover{background-color:var(--hover-color)}.about-content{display:grid;grid-template-columns:2fr 1fr;gap:3rem;align-items:center}@media (max-width: 768px){.about-content{grid-template-columns:1fr;gap:2rem}}.about-text{font-size:1.1rem;line-height:1.8}.about-text p{margin-bottom:1rem}.about-image img{width:100%;border-radius:10px}.works-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(350px, 1fr));gap:2rem;margin-bottom:3rem}.work-item{background:white;border-radius:10px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,0.1);transition:transform 0.3s ease, box-shadow 0.3s ease}.work-item:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,0.15)}.work-link{text-decoration:none;color:inherit;display:block}.work-image img{width:100%;height:250px;object-fit:cover}.work-info{padding:1.5rem}.work-title{font-size:1.2rem;font-weight:600;margin-bottom:0.5rem}.work-category{color:var(--secondary-color);font-size:0.9rem}.art-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(200px, 1fr));gap:1rem;margin-bottom:3rem}.art-item{aspect-ratio:1;overflow:hidden;border-radius:8px}.art-item img{width:100%;height:100%;object-fit:cover;transition:transform 0.3s ease}.art-item img:hover{transform:scale(1.05)}.section-footer{text-align:center}.contact-content{max-width:600px;margin:0 auto;text-align:center}.contact-info{margin-bottom:3rem}.contact-info p{margin-bottom:1rem;font-size:1.1rem}.contact-form{text-align:left}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:0.5rem;font-weight:600;color:var(--primary-color)}.form-group input,.form-group textarea{width:100%;padding:0.75rem;border:1px solid var(--border-color);border-radius:5px;font-size:1rem;transition:border-color 0.3s ease}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent-color)}.form-group textarea{resize:vertical;min-height:120px}.footer{background-color:var(--hover-color);padding:2rem 0;text-align:center;border-top:1px solid var(--border-color)}.footer-content{max-width:1200px;margin:0 auto;padding:0 20px}.footer-content p{margin-bottom:0.5rem;color:var(--secondary-color);font-size:0.9rem}.social-links{margin-top:1rem}.social-links a{text-decoration:none;color:var(--accent-color);margin:0 1rem;font-weight:500}.social-links a:hover{text-decoration:underline}html{scroll-behavior:smooth}@media (max-width: 768px){.section-title{font-size:2rem}section{padding:3rem 0}.works-grid{grid-template-columns:1fr}.art-grid{grid-template-columns:repeat(auto-fill, minmax(150px, 1fr))}}