:root{--ink:#0f1b33;--ink-soft:#5b6b85;--line:#e6ebf5;--paper:#fff;--wash:#f3f7ff;--accent-1:#2b5fd9;--accent-2:#5b8def;--accent-3:#37bfa0;--accent-grad:linear-gradient(100deg,var(--accent-1),var(--accent-2) 55%,var(--accent-3))}*{box-sizing:border-box}html,body{max-width:100vw}body{background:var(--paper);color:var(--ink);font-family:var(--font-noto-sans-jp), sans-serif;margin:0;font-size:15.5px;line-height:1.85}h1,h2,h3,.disp{letter-spacing:-.01em}a{color:inherit;text-decoration:none}.wrap{max-width:1180px;margin:0 auto;padding:0 clamp(20px,5vw,64px)}.grad-text{background:var(--accent-grad);color:#0000;-webkit-background-clip:text;background-clip:text}@keyframes riseIn{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}.rise{animation:.7s cubic-bezier(.2,.7,.2,1) both riseIn}@media (prefers-reduced-motion:reduce){.rise{animation:none}}nav.top{z-index:20;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-bottom:1px solid 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