.site-header[data-astro-cid-3ef6ksr2]{background:#2c3e50;color:#fff;padding:1rem 0;box-shadow:0 2px 4px #0000001a;position:relative;z-index:100}.header-container[data-astro-cid-3ef6ksr2]{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:0 20px}.site-logo[data-astro-cid-3ef6ksr2]{text-decoration:none;color:#fff;font-size:1.5rem;font-weight:700}.site-nav[data-astro-cid-3ef6ksr2] ul[data-astro-cid-3ef6ksr2]{list-style:none;display:flex;gap:20px;margin:0;padding:0;align-items:center}.site-nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{color:#ecf0f1;text-decoration:none;font-size:.9rem;transition:color .2s;padding:5px 10px;display:block;border-radius:4px}.site-nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]:hover{color:#3498db}.site-nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2].active{color:#3498db;font-weight:700}.contact-link[data-astro-cid-3ef6ksr2]{border:none}.hamburger[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;background:none;border:none;cursor:pointer;padding:4px}.hamburger[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2]{display:block;width:100%;height:2px;background:#ecf0f1;border-radius:2px;transition:transform .3s,opacity .3s}.hamburger[data-astro-cid-3ef6ksr2].is-open span[data-astro-cid-3ef6ksr2]:nth-child(1){transform:translateY(7px) rotate(45deg)}.hamburger[data-astro-cid-3ef6ksr2].is-open span[data-astro-cid-3ef6ksr2]:nth-child(2){opacity:0}.hamburger[data-astro-cid-3ef6ksr2].is-open span[data-astro-cid-3ef6ksr2]:nth-child(3){transform:translateY(-7px) rotate(-45deg)}@media(max-width:600px){.hamburger[data-astro-cid-3ef6ksr2]{display:flex}.site-nav[data-astro-cid-3ef6ksr2]{display:none;position:absolute;top:100%;left:0;right:0;background:#2c3e50;border-top:1px solid rgba(255,255,255,.1);box-shadow:0 4px 8px #0003}.site-nav[data-astro-cid-3ef6ksr2].is-open{display:block}.site-nav[data-astro-cid-3ef6ksr2] ul[data-astro-cid-3ef6ksr2]{flex-direction:column;gap:0;padding:10px 0}.site-nav[data-astro-cid-3ef6ksr2] li[data-astro-cid-3ef6ksr2]{width:100%}.site-nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{padding:12px 24px;border-radius:0;font-size:1rem}.site-nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]:hover,.site-nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2].active{background:#ffffff14}}.site-footer[data-astro-cid-sz7xmlte]{background:#2c3e50;color:#bdc3c7;padding:2.5rem 0 1.5rem;margin-top:60px;border-top:3px solid #3498db}.footer-container[data-astro-cid-sz7xmlte]{max-width:1200px;margin:0 auto;padding:0 20px;text-align:center}.footer-nav[data-astro-cid-sz7xmlte]{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 24px;margin-bottom:1.5rem}.footer-nav[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:#bdc3c7;text-decoration:none;font-size:.875rem;transition:color .2s}.footer-nav[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:#3498db}.footer-copy[data-astro-cid-sz7xmlte]{font-size:.8rem;color:#7f8c8d;margin:0}:root{--primary: #3498db;--text: #333;--bg-body: #fdfdfd;--bg-card: #ffffff;--border: #eeeeee}body{margin:0;font-family:Noto Sans JP,Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;background-color:var(--bg-body);color:var(--text);line-height:1.7}.global-ad-container{width:100%;display:flex;justify-content:center;padding:20px 0;background-color:#fafafa}.ad-wrapper{max-width:1200px;width:100%;text-align:center}.ad-label{font-size:10px;color:#999;margin-bottom:8px;letter-spacing:1px}.global-layout{max-width:1200px;margin:10px auto 30px;padding:0 20px;display:flex;gap:40px}.main-column{flex:1;min-width:0}.side-column{width:300px;flex:0 0 300px}.side-sticky{position:sticky;top:20px}.side-card{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:20px;margin-bottom:20px}.side-card h3{font-size:1.1rem;margin:0 0 15px;border-bottom:2px solid var(--primary);padding-bottom:5px}.ad-card{padding:20px 0!important;text-align:center}.ad-sidebar-container{min-height:250px}@media(max-width:900px){.global-layout{flex-direction:column}.side-column{width:100%}.side-sticky{position:static}}