:root{--bg-deep:#08090b;--bg-panel:#0c0c10;--cyan:#e8308c;--cyan-bright:#ff5cb0;--blue-electric:#6c16c7;--ink:#f4eef6;--ink-muted:#f4eef6a3;--ink-faint:#f4eef66b;--glass-bg:#140c166b;--glass-border:#e8308c2e;--glass-blur:18px;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Hiragino Sans", "Noto Sans JP", Meiryo, sans-serif}*,:before,:after{box-sizing:border-box}html,body{margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{background:var(--bg-deep);min-height:100vh;color:var(--ink);font-family:var(--font-sans);font-synthesis-weight:none;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;overflow-x:hidden}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}a{color:inherit;text-decoration:none}img,canvas{display:block}#app>canvas{z-index:0;pointer-events:none;width:100%;height:100%;position:fixed;inset:0}#app>:not(canvas):not(.site-nav){z-index:1;position:relative}.site-nav{z-index:10;justify-content:space-between;align-items:center;gap:1.5rem;padding:18px clamp(20px,4vw,56px);transition:padding .4s,background .4s,-webkit-backdrop-filter .4s,backdrop-filter .4s;display:flex;position:fixed;top:0;left:0;right:0}.site-nav.is-scrolled{-webkit-backdrop-filter:blur(10px);background:linear-gradient(#05070ab8,#05070a47);padding-top:12px;padding-bottom:12px}.site-nav__brand{align-items:center;line-height:1;transition:opacity .3s;display:inline-flex}.site-nav__brand:hover{opacity:.82}.site-nav__logo{width:auto;height:44px;display:block}@media (width<=720px){.site-nav__logo{height:36px}}.site-nav__menu{align-items:center;gap:clamp(.9rem,2vw,1.8rem);display:flex}.site-nav__link{letter-spacing:.04em;color:var(--ink-muted);cursor:pointer;font-size:.86rem;transition:color .22s;position:relative}.site-nav__link:after{content:"";background:var(--cyan);transform-origin:0;width:100%;height:1px;transition:transform .24s;position:absolute;bottom:-5px;left:0;transform:scaleX(0)}.site-nav__link:hover{color:var(--ink)}.site-nav__link.is-active{color:var(--cyan-bright)}.site-nav__link.is-active:after,.site-nav__link:hover:after{transform:scaleX(1)}@media (prefers-reduced-motion:reduce){.site-nav,.site-nav__link{transition:none}}.lang-toggle{border:1px solid var(--glass-border);-webkit-backdrop-filter:blur(8px);background:#e8308c0f;border-radius:999px;align-items:center;padding:2px;display:inline-flex}.lang-toggle__btn{appearance:none;font:inherit;letter-spacing:.06em;color:var(--ink-muted);cursor:pointer;pointer-events:auto;background:0 0;border:0;border-radius:999px;margin:0;padding:5px 11px;font-size:.74rem;font-weight:600;line-height:1;transition:color .22s,background .22s}.lang-toggle__btn:hover{color:var(--ink)}.lang-toggle__btn.is-active{color:var(--bg-deep);background:linear-gradient(100deg, var(--cyan-bright), var(--blue-electric))}@media (prefers-reduced-motion:reduce){.lang-toggle__btn{transition:none}}@media (width<=720px){.site-nav__menu{gap:.9rem}.site-nav__link{display:none}}