:root{--color-primary: #0056b3;--color-primary-dark: #004494;--color-secondary: #00a8e8;--color-text: #333333;--color-text-light: #666666;--color-bg: #ffffff;--color-bg-alt: #f8f9fa;--color-white: #ffffff;--color-border: #e0e0e0;--font-base: "Inter", "Noto Sans JP", sans-serif;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 2rem;--spacing-lg: 4rem;--spacing-xl: 8rem;--container-width: 1200px;--header-height: 80px;--border-radius: 8px;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .05);--shadow-md: 0 4px 8px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 16px rgba(0, 0, 0, .1);--transition: all .3s ease}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-base);color:var(--color-text);line-height:1.6;background-color:var(--color-bg);-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}img{max-width:100%;height:auto;display:block}.container{max-width:var(--container-width);margin:0 auto;padding:0 var(--spacing-sm);width:100%}.u-desktop-only{display:block}.section{padding:var(--spacing-xl) 0}.section-title{font-size:2.5rem;font-weight:700;margin-bottom:var(--spacing-lg);text-align:center;position:relative}.section-title__sub{display:block;font-size:1rem;color:var(--color-primary);margin-top:var(--spacing-xs);font-weight:500;letter-spacing:.1em;font-family:Inter,sans-serif}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.8rem 2rem;border-radius:50px;font-weight:600;cursor:pointer;transition:var(--transition);border:2px solid transparent}.btn--primary{background-color:var(--color-primary);color:var(--color-white)}.btn--primary:hover{background-color:var(--color-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn--secondary{background-color:transparent;border-color:var(--color-primary);color:var(--color-primary)}.btn--secondary:hover{background-color:var(--color-primary);color:var(--color-white)}.btn--text{color:var(--color-primary);padding:0;border-radius:0}.btn--text:hover{text-decoration:underline}.btn--large{padding:1rem 3rem;font-size:1.1rem}.header{height:var(--header-height);position:fixed;top:0;left:0;width:100%;background-color:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:1000;box-shadow:var(--shadow-sm);display:flex;align-items:center}.header__container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;color:var(--color-primary);letter-spacing:-.02em}.nav__list{display:flex;gap:var(--spacing-md)}.nav__link{font-weight:500;font-size:.95rem;position:relative}.nav__link:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background-color:var(--color-primary);transition:var(--transition)}.nav__link:hover,.nav__link--active{color:var(--color-primary)}.nav__link:hover:after,.nav__link--active:after{width:100%}.header__cta{padding:.6rem 1.5rem;font-size:.9rem}.mobile-menu-btn{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:6px;padding:5px}.mobile-menu-btn__line{width:24px;height:2px;background-color:var(--color-text);transition:var(--transition)}.hero{position:relative;height:100vh;min-height:600px;display:flex;align-items:center;color:var(--color-white);padding-top:80px;overflow:hidden}.hero__bg-slider{position:absolute;top:0;left:0;width:100%;height:100%;z-index:-2}.hero__bg-slide{position:absolute;top:0;left:0;width:100%;height:100%;background-size:cover;background-position:center;opacity:0;animation:heroSlide 18s infinite}.hero__bg-slide:nth-child(1){animation-delay:0s}.hero__bg-slide:nth-child(2){animation-delay:6s}.hero__bg-slide:nth-child(3){animation-delay:12s}@keyframes heroSlide{0%{opacity:0;transform:scale(1)}5%{opacity:1}33%{opacity:1}38%{opacity:0}to{opacity:0;transform:scale(1.1)}}.hero__overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:-1}.hero__container{position:relative;z-index:1;text-align:center}.hero__title{font-size:4rem;font-weight:700;line-height:1.2;margin-bottom:var(--spacing-sm);display:flex;flex-direction:column}.hero__subtitle{font-size:1.5rem;margin-bottom:var(--spacing-md);opacity:.9;font-weight:300}.hero__cta{background-color:var(--color-white);color:var(--color-primary);border-color:var(--color-white)}.hero__cta:hover{background-color:transparent;color:var(--color-white)}.scroll-indicator{position:absolute;bottom:2rem;left:50%;transform:translate(-50%);color:var(--color-white);display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xs);font-size:.8rem;letter-spacing:.1em;opacity:.8}.scroll-indicator__line{width:1px;height:60px;background-color:var(--color-white);position:relative;overflow:hidden}.scroll-indicator__line:after{content:"";position:absolute;top:0;left:0;width:100%;height:50%;background-color:var(--color-secondary);animation:scrollDown 2s infinite}@keyframes scrollDown{0%{transform:translateY(-100%)}to{transform:translateY(200%)}}.page-header{padding:calc(var(--header-height) + var(--spacing-lg)) 0 var(--spacing-lg);background-color:var(--color-bg-alt);text-align:center}.page-header__title{font-size:2.5rem;font-weight:700}.page-header__sub{display:block;font-size:1rem;color:var(--color-primary);margin-top:var(--spacing-xs);font-family:Inter,sans-serif;letter-spacing:.1em}.contact-intro{text-align:center;margin-bottom:var(--spacing-lg);font-size:1.05rem}.contact-form{max-width:800px;margin:0 auto;background:var(--color-white);padding:var(--spacing-lg);border-radius:var(--border-radius);box-shadow:var(--shadow-sm);border:1px solid var(--color-border)}.form-group{margin-bottom:var(--spacing-md)}.form-label{display:block;font-weight:600;margin-bottom:var(--spacing-xs)}.form-required{background-color:#ff4d4f;color:#fff;font-size:.75rem;padding:.1rem .4rem;border-radius:4px;margin-left:.5rem;vertical-align:middle}.form-input,.form-select,.form-textarea{width:100%;padding:.8rem;border:1px solid var(--color-border);border-radius:4px;font-size:1rem;font-family:inherit;transition:var(--transition)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #0056b31a}.select-wrapper{position:relative}.select-wrapper:after{content:"▼";font-size:.8rem;color:var(--color-text-light);position:absolute;right:1rem;top:50%;transform:translateY(-50%);pointer-events:none}.form-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:#fff;cursor:pointer}.form-textarea{resize:vertical;min-height:150px}.form-submit{text-align:center;margin-top:var(--spacing-lg)}.strength{background-color:var(--color-bg)}.strength__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-md)}.strength__card{padding:var(--spacing-md);background-color:var(--color-white);border:1px solid var(--color-border);border-radius:var(--border-radius);transition:var(--transition);position:relative;overflow:hidden}.strength__card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--color-primary)}.strength__icon{font-size:3rem;font-weight:700;color:var(--color-bg-alt);position:absolute;top:-10px;right:-10px;line-height:1;z-index:0}.strength__title{font-size:1.5rem;margin-bottom:var(--spacing-sm);color:var(--color-primary);position:relative;z-index:1}.strength__desc{color:var(--color-text-light);font-size:.95rem;position:relative;z-index:1}.services{background-color:var(--color-bg-alt)}.services__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-md)}.service-card{background:var(--color-white);border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);height:100%}.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}.service-card__image-wrapper{height:200px;background-color:#e0e7ff;display:flex;align-items:center;justify-content:center;overflow:hidden}.service-card__placeholder{font-weight:700;color:var(--color-primary);font-size:1.2rem;opacity:.5}.service-card__content{padding:var(--spacing-md)}.service-card__title{font-size:1.25rem;margin-bottom:var(--spacing-xs);color:var(--color-text)}.service-card__desc{font-size:.9rem;color:var(--color-text-light)}.works{background-color:var(--color-white)}.works__slider{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.work-card{position:relative;cursor:pointer}.work-card__image{height:300px;background-color:#f0f0f0;border-radius:var(--border-radius);margin-bottom:var(--spacing-sm);overflow:hidden;position:relative;display:flex;align-items:center;justify-content:center}.work-card__image:after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:#0003;opacity:0;transition:var(--transition)}.work-card:hover .work-card__image:after{opacity:1}.work-card__placeholder{font-size:1.5rem;font-weight:700;color:#999}.work-card__info{padding:0 var(--spacing-xs)}.work-card__category{font-size:.85rem;color:var(--color-primary);font-weight:600;margin-bottom:.2rem}.work-card__title{font-size:1.1rem;font-weight:600;line-height:1.4}.works__cta-wrapper{text-align:center}.news{background-color:var(--color-bg-alt)}.news__list{max-width:800px;margin:0 auto;margin-bottom:var(--spacing-lg)}.news__item{display:flex;align-items:center;padding:var(--spacing-md) 0;border-bottom:1px solid var(--color-border);transition:var(--transition);gap:var(--spacing-md)}.news__item:hover{background-color:#ffffff80;padding-left:var(--spacing-sm);padding-right:var(--spacing-sm)}.news__date{font-family:Inter,sans-serif;color:var(--color-text-light);font-size:.9rem;white-space:nowrap}.news__category{display:inline-block;padding:.2rem .8rem;background-color:var(--color-primary);color:var(--color-white);font-size:.75rem;border-radius:4px;font-weight:500;min-width:80px;text-align:center}.news__title{flex:1;font-weight:500}.news__cta-wrapper{text-align:center}.contact{background:linear-gradient(135deg,#0b1c3c,#1e3c72);color:var(--color-white);text-align:center;padding:var(--spacing-xl) 0}.contact__title{font-size:2.5rem;margin-bottom:var(--spacing-sm)}.contact__text{margin-bottom:var(--spacing-lg);font-size:1.1rem;opacity:.9}.footer{background-color:#f8f9fa;padding-top:var(--spacing-lg);padding-bottom:var(--spacing-md);border-top:1px solid var(--color-border)}.footer__container{display:flex;justify-content:space-between;margin-bottom:var(--spacing-lg);flex-wrap:wrap;gap:var(--spacing-md)}.footer__logo{font-size:1.5rem;font-weight:700;color:var(--color-primary);display:block;margin-bottom:var(--spacing-sm)}.footer__address{font-size:.9rem;color:var(--color-text-light);line-height:1.8}.footer__links{display:flex;gap:var(--spacing-xl)}.footer__nav li{margin-bottom:.8rem}.footer__nav a{font-size:.9rem;color:var(--color-text);transition:var(--transition)}.footer__nav a:hover{color:var(--color-primary)}.footer__copy{text-align:center;color:var(--color-text-light);font-size:.8rem;padding-top:var(--spacing-md);border-top:1px solid rgba(0,0,0,.05)}@media (max-width: 900px){.hero__title{font-size:3rem}.works__slider{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){:root{--header-height: 60px;--spacing-xl: 4rem}.header__cta,.nav{display:none}.nav.active{display:flex;position:fixed;top:var(--header-height);left:0;width:100%;height:calc(100vh - var(--header-height));background-color:var(--color-white);flex-direction:column;align-items:center;justify-content:center;z-index:999}.nav.active .nav__list{flex-direction:column;align-items:center;gap:var(--spacing-lg)}.nav.active .nav__link{font-size:1.2rem}.mobile-menu-btn{display:flex}.hero__title{font-size:2.5rem}.works__slider{grid-template-columns:1fr}.footer__container{flex-direction:column}.footer__links{flex-direction:column;gap:var(--spacing-md)}.news__item{flex-direction:column;align-items:flex-start;gap:var(--spacing-xs)}.u-desktop-only{display:none}.contact-form{padding:var(--spacing-md)}}