:root{color:#4a3f42;background:#fffdfb;font-family:Hiragino Maru Gothic ProN,Yu Gothic,Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--page-bg: #fffdfb;--ink: #4a3f42;--muted: #8f8586;--nyanpasu-pink: #f0808a;--nyanpasu-pink-soft: #ffe3e6;--line: #c9c1bd;--button-bg: #ffffff;--button-border: #f0808a;--button-shadow: #f5c6ca;--button-shadow-active: #f0808a;--focus: #d85d69}*{box-sizing:border-box}html{min-width:320px;min-height:100%;background:var(--page-bg)}body{min-width:320px;min-height:100vh;margin:0;background:var(--page-bg);color:var(--ink)}body:before{position:fixed;top:36px;right:36px;bottom:36px;left:36px;z-index:0;border:1px solid var(--line);content:"";pointer-events:none}button{font:inherit}#effect-canvas{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1;pointer-events:none}.shell{position:relative;z-index:2;display:grid;min-height:100vh;padding:64px 28px;place-items:center}.hero{display:grid;width:min(100%,720px);justify-items:center;gap:24px;text-align:center}.eyebrow{margin:0;color:var(--muted);font-size:.72rem;font-weight:600;letter-spacing:0;text-transform:uppercase}h1{margin:0;color:var(--nyanpasu-pink);font-size:clamp(3rem,12vw,6.9rem);font-weight:700;line-height:1.08;text-shadow:0 1px 0 #fff,0 8px 26px rgba(240,128,138,.16)}.nyanpasu-button{position:relative;width:min(100%,340px);min-height:72px;border:2px solid var(--button-border);border-radius:999px;background:var(--button-bg);color:#d96470;box-shadow:0 8px 0 var(--button-shadow);cursor:pointer;font-size:1.12rem;font-weight:700;line-height:1.2;padding:18px 56px 18px 30px;touch-action:manipulation;transform:translateY(0);transition:box-shadow .16s ease,transform .16s ease,border-color .16s ease}.nyanpasu-button:after{position:absolute;top:50%;right:26px;width:24px;height:22px;background:radial-gradient(circle at 50% 68%,var(--nyanpasu-pink) 0 34%,transparent 36%),radial-gradient(circle at 14% 26%,var(--nyanpasu-pink) 0 16%,transparent 18%),radial-gradient(circle at 38% 8%,var(--nyanpasu-pink) 0 16%,transparent 18%),radial-gradient(circle at 65% 8%,var(--nyanpasu-pink) 0 16%,transparent 18%),radial-gradient(circle at 88% 26%,var(--nyanpasu-pink) 0 16%,transparent 18%);content:"";opacity:.82;transform:translateY(-50%) rotate(-12deg)}.nyanpasu-button:hover{border-color:var(--button-shadow-active);box-shadow:0 10px 0 var(--nyanpasu-pink-soft);transform:translateY(-2px)}.nyanpasu-button:active{box-shadow:0 3px 0 var(--nyanpasu-pink-soft);transform:translateY(6px)}.nyanpasu-button:focus-visible{outline:4px solid color-mix(in srgb,var(--focus) 38%,transparent);outline-offset:6px}.sound-note{min-height:1.4em;margin:6px 0 0;color:var(--muted);font-size:.95rem;line-height:1.5}@media(max-width:520px){body:before{top:16px;right:16px;bottom:16px;left:16px}.shell{align-items:center;padding:40px 28px 52px}.hero{gap:20px}.nyanpasu-button{min-height:72px;font-size:1.05rem;padding-inline:28px 54px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}