:root{--brand:#028bff;--brand-hover:#0057ff;--brand-strong:#0057ff;--brand-weak:#e6f4ff;--brand-weaker:#eaf5ff;--brand-tint:#f4faff;--brand-border:#bfe4ff;--brand-gradient:linear-gradient(135deg,#028bff,#0057ff);--bg:#eaf5ff;--bg-soft:#f8fafc;--surface:#ffffff;--border:#dce4ee;--border-strong:#d6e0ec;--border-mute:#cdd2d8;--text:#1a1a1a;--text-strong:#1a1a1a;--text-muted:#5a6069;--text-soft:#3f4349;--text-faint:#7a818b;--text-fainter:#9098a3;--success:#028bff;--success-weak:#e6f4ff;--danger:#d24a3f;--danger-weak:#fdeeec;--warning-weak:#fff6e7;--warning-border:#f0d28a;--radius-sm:8px;--radius:14px;--radius-lg:28px;--shadow-sm:0 2px 8px rgba(2,87,255,0.06);--shadow:0 18px 48px rgba(2,87,255,0.12);--maxw:560px;--font-sans:var(--font-noto-sans-jp),"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;--font-brand:var(--font-zen-maru-gothic),var(--font-noto-sans-jp),"Hiragino Sans","Noto Sans JP",sans-serif}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,h3,p{margin:0}button{font-family:inherit;cursor:pointer}a{color:var(--brand)}:focus-visible{outline:3px solid var(--brand-border);outline-offset:2px}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}