:root{--color-primary: #3B82F6;--color-primary-dark: #2563EB;--color-primary-light: #60A5FA;--color-secondary: #10B981;--color-accent: #F59E0B;--color-text: #1F2937;--color-text-light: #6B7280;--color-text-lighter: #9CA3AF;--color-bg: #FFFFFF;--color-bg-alt: #F9FAFB;--color-bg-dark: #F3F4F6;--color-border: #E5E7EB;--font-sans: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;--container-max: 1200px;--section-padding: 5rem;--transition-fast: .15s ease;--transition-normal: .3s ease;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem}@media (prefers-color-scheme: dark){:root{--color-text: #F9FAFB;--color-text-light: #D1D5DB;--color-text-lighter: #9CA3AF;--color-bg: #111827;--color-bg-alt: #1F2937;--color-bg-dark: #374151;--color-border: #374151}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:1rem;line-height:1.7;color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img{max-width:100%;height:auto;display:block}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-dark)}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}@media (max-width: 768px){h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}:root{--section-padding: 3rem}}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);border:none;text-decoration:none}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-dark);color:#fff}.btn-secondary{background-color:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}.btn-secondary:hover{background-color:var(--color-primary);color:#fff}.section{padding:var(--section-padding) 0}.section-title{text-align:center;margin-bottom:3rem}.section-title h2{margin-bottom:1rem}.section-title p{color:var(--color-text-light);max-width:600px;margin:0 auto}.header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:100;background-color:var(--color-bg);border-bottom:1px solid var(--color-border);backdrop-filter:blur(10px)}.nav[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;height:4rem}.logo[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.25rem;color:var(--color-text)}.logo[data-astro-cid-3ef6ksr2]:hover{color:var(--color-primary)}.nav-list[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:2rem;list-style:none}.nav-link[data-astro-cid-3ef6ksr2]{position:relative;color:var(--color-text-light);font-weight:500;padding:.5rem 0}.nav-link[data-astro-cid-3ef6ksr2]:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background-color:var(--color-primary);transition:width var(--transition-fast)}.nav-link[data-astro-cid-3ef6ksr2]:hover,.nav-link[data-astro-cid-3ef6ksr2].active{color:var(--color-primary)}.nav-link[data-astro-cid-3ef6ksr2]:hover:after,.nav-link[data-astro-cid-3ef6ksr2].active:after{width:100%}.lang-switch[data-astro-cid-3ef6ksr2]{margin-left:1rem;padding-left:1rem;border-left:1px solid var(--color-border)}.lang-link[data-astro-cid-3ef6ksr2]{font-size:.875rem}.mobile-menu-btn[data-astro-cid-3ef6ksr2]{display:none;background:none;border:none;cursor:pointer;padding:.5rem}.hamburger[data-astro-cid-3ef6ksr2]{display:block;width:24px;height:2px;background-color:var(--color-text);position:relative;transition:background-color var(--transition-fast)}.hamburger[data-astro-cid-3ef6ksr2]:before,.hamburger[data-astro-cid-3ef6ksr2]:after{content:"";position:absolute;width:24px;height:2px;background-color:var(--color-text);left:0;transition:transform var(--transition-fast)}.hamburger[data-astro-cid-3ef6ksr2]:before{top:-7px}.hamburger[data-astro-cid-3ef6ksr2]:after{top:7px}@media (max-width: 768px){.mobile-menu-btn[data-astro-cid-3ef6ksr2]{display:block}.nav-list[data-astro-cid-3ef6ksr2]{position:absolute;top:100%;left:0;right:0;flex-direction:column;background-color:var(--color-bg);border-bottom:1px solid var(--color-border);padding:1rem;gap:0;display:none}.nav-list[data-astro-cid-3ef6ksr2].open{display:flex}.nav-list[data-astro-cid-3ef6ksr2] li[data-astro-cid-3ef6ksr2]{width:100%}.nav-link[data-astro-cid-3ef6ksr2]{display:block;padding:.75rem 0}}.footer[data-astro-cid-sz7xmlte]{background-color:var(--color-bg-alt);border-top:1px solid var(--color-border);padding:4rem 0 2rem}.footer-grid[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:1fr 2fr;gap:4rem}.footer-logo[data-astro-cid-sz7xmlte]{font-size:1.25rem;font-weight:700;color:var(--color-text)}.footer-tagline[data-astro-cid-sz7xmlte]{margin-top:1rem;color:var(--color-text-light);font-size:.875rem;line-height:1.6}.footer-links[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.footer-column[data-astro-cid-sz7xmlte] h4[data-astro-cid-sz7xmlte]{font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-lighter);margin-bottom:1rem}.footer-column[data-astro-cid-sz7xmlte] ul[data-astro-cid-sz7xmlte]{list-style:none}.footer-column[data-astro-cid-sz7xmlte] li[data-astro-cid-sz7xmlte]{margin-bottom:.5rem}.footer-column[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--color-text-light);font-size:.9375rem}.footer-column[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-primary)}.footer-bottom[data-astro-cid-sz7xmlte]{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--color-border);text-align:center}.footer-bottom[data-astro-cid-sz7xmlte] p[data-astro-cid-sz7xmlte]{color:var(--color-text-lighter);font-size:.875rem}@media (max-width: 768px){.footer-grid[data-astro-cid-sz7xmlte]{grid-template-columns:1fr;gap:2rem}.footer-links[data-astro-cid-sz7xmlte]{grid-template-columns:repeat(2,1fr)}}@media (max-width: 480px){.footer-links[data-astro-cid-sz7xmlte]{grid-template-columns:1fr}}