:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-background: #ffffff;--color-surface: #f8fafc;--color-border: #e2e8f0;--color-text-main: #0f172a;--color-text-muted: #64748b;--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: 1rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;--container-max: 1200px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-background);color:var(--color-text-main);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.container{max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;margin-bottom:1rem}p{margin-bottom:1rem}.btn{display:inline-block;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;text-align:center;transition:all .2s ease;cursor:pointer;border:none}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-hover);text-decoration:none}.btn-outline{background-color:transparent;border:1px solid var(--color-border);color:var(--color-text-main)}.btn-outline:hover{background-color:var(--color-surface);text-decoration:none}.card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.tag{display:inline-block;padding:.25rem .75rem;background-color:var(--color-surface);color:var(--color-text-muted);border-radius:9999px;font-size:.875rem;font-weight:500}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.grid{display:grid;gap:1.5rem}@media(min-width:768px){.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-3{grid-template-columns:repeat(3,1fr)}}.site-header[data-astro-cid-ctg3m53h]{background-color:#fff;border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100}.header-inner[data-astro-cid-ctg3m53h]{display:flex;justify-content:space-between;align-items:center;height:4rem}.logo[data-astro-cid-ctg3m53h]{font-size:1.25rem;font-weight:800;color:var(--color-text-main);text-decoration:none}.nav-links[data-astro-cid-ctg3m53h]{display:flex;gap:1.5rem}.nav-links[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]{color:var(--color-text-muted);font-weight:500;font-size:.95rem;text-decoration:none;transition:color .2s}.nav-links[data-astro-cid-ctg3m53h] a[data-astro-cid-ctg3m53h]:hover{color:var(--color-primary)}@media(max-width:640px){.nav-links[data-astro-cid-ctg3m53h]{display:none}}.site-footer[data-astro-cid-gcn2mc3v]{background-color:var(--color-surface);border-top:1px solid var(--color-border);padding:3rem 0 1.5rem;margin-top:4rem}.footer-inner[data-astro-cid-gcn2mc3v]{display:grid;grid-template-columns:1fr;gap:2rem;margin-bottom:2rem}@media(min-width:768px){.footer-inner[data-astro-cid-gcn2mc3v]{grid-template-columns:2fr 3fr}}.footer-info[data-astro-cid-gcn2mc3v] h3[data-astro-cid-gcn2mc3v]{font-size:1.25rem;margin-bottom:.5rem}.footer-info[data-astro-cid-gcn2mc3v] p[data-astro-cid-gcn2mc3v]{color:var(--color-text-muted)}.footer-links[data-astro-cid-gcn2mc3v]{display:grid;grid-template-columns:1fr 1fr;gap:2rem}.link-group[data-astro-cid-gcn2mc3v] h4[data-astro-cid-gcn2mc3v]{font-size:1rem;margin-bottom:1rem;color:var(--color-text-main)}.link-group[data-astro-cid-gcn2mc3v] a[data-astro-cid-gcn2mc3v]{display:block;color:var(--color-text-muted);margin-bottom:.5rem;text-decoration:none}.link-group[data-astro-cid-gcn2mc3v] a[data-astro-cid-gcn2mc3v]:hover{color:var(--color-primary);text-decoration:underline}.footer-bottom[data-astro-cid-gcn2mc3v]{text-align:center;padding-top:1.5rem;border-top:1px solid var(--color-border);color:var(--color-text-muted);font-size:.875rem}main[data-astro-cid-sckkx6r4]{min-height:calc(100vh - 140px);padding:2rem 0}