*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-text: #1e293b;--color-text-muted: #64748b;--color-bg: #ffffff;--color-bg-alt: #f8fafc;--color-border: #e2e8f0;--font-sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;--max-width: 1100px;--radius: 8px}html{scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}.header{position:sticky;top:0;z-index:100;background:#fffffff2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border)}.header__inner{display:flex;align-items:center;justify-content:space-between;height:4rem}.logo{font-size:1.25rem;font-weight:700;color:var(--color-text);text-decoration:none}.nav{display:flex;align-items:center;gap:1.5rem}.nav a{color:var(--color-text-muted);font-size:.9rem;text-decoration:none}.nav a:hover{color:var(--color-text);text-decoration:none}.nav__cta{background:var(--color-primary);color:#fff!important;padding:.4rem 1rem;border-radius:var(--radius);font-weight:600}.nav__cta:hover{background:var(--color-primary-dark);color:#fff!important}.hero{padding:6rem 0 5rem;background:linear-gradient(135deg,#eff6ff,#f8fafc)}.hero__label{font-size:.85rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--color-primary);margin-bottom:1rem}.hero__title{font-size:clamp(2rem,5vw,3rem);font-weight:800;line-height:1.3;margin-bottom:1.5rem}.hero__description{font-size:1.1rem;color:var(--color-text-muted);max-width:540px;margin-bottom:2rem}.button{display:inline-block;padding:.75rem 1.75rem;border-radius:var(--radius);font-size:1rem;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:background .2s}.button--primary{background:var(--color-primary);color:#fff}.button--primary:hover{background:var(--color-primary-dark);text-decoration:none}.button--full{width:100%}.button:disabled{opacity:.5;cursor:not-allowed}.section{padding:5rem 0}.section--alt{background:var(--color-bg-alt)}.section__title{font-size:1.75rem;font-weight:700;margin-bottom:2.5rem;text-align:center}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.75rem}.section--alt .card{background:var(--color-bg)}.card__label{font-size:.8rem;font-weight:600;color:var(--color-primary);margin-bottom:.5rem}.card__title{font-size:1.1rem;font-weight:700;margin-bottom:.75rem}.card__text{font-size:.95rem;color:var(--color-text-muted)}.about__content{max-width:640px;margin:0 auto}.about__content p+p{margin-top:1rem}.contact{max-width:560px;margin:0 auto}.contact__lead{text-align:center;color:var(--color-text-muted);margin-bottom:2rem}.contact__form{display:flex;flex-direction:column;gap:1.25rem}.form-group{display:flex;flex-direction:column;gap:.4rem}.form-group label{font-size:.9rem;font-weight:600}.form-group input,.form-group textarea{padding:.65rem .85rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:1rem;font-family:inherit;background:var(--color-bg);transition:border-color .2s}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--color-primary)}.contact__email{text-align:center;margin-top:1.5rem;font-size:.9rem;color:var(--color-text-muted)}.footer{padding:2rem 0;border-top:1px solid var(--color-border);text-align:center;font-size:.85rem;color:var(--color-text-muted)}@media(max-width:640px){.nav{display:none}.hero{padding:4rem 0 3rem}.section{padding:3.5rem 0}}