:root{--background:#f5f8fb;--surface:#fff;--surface-soft:#edf4fa;--text:#16202a;--muted:#647382;--line:#d5e0ea;--accent:#256fba;--accent-dark:#174d82;--danger:#a33b3b;--success:#16724c;--shadow:0 18px 60px #16202a1c}*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(180deg,#256fba14,transparent 320px),var(--background);color:var(--text);flex-direction:column;justify-content:center;align-items:center;min-height:100vh;font-family:Hiragino Maru Gothic ProN,Yu Gothic UI,Hiragino Sans,Yu Gothic,Meiryo,Arial,sans-serif;display:flex}main{width:100%;max-width:600px;padding:2rem}h1{text-align:center;color:var(--text);margin-bottom:.5rem;font-size:1.75rem;font-weight:700}.subtitle{color:var(--muted);text-align:center;margin-bottom:2rem;font-size:14px;font-weight:500}.card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:8px;flex-direction:column;gap:1.5rem;padding:22px;display:flex}.button-container{justify-content:center;display:flex}button{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:12px 24px;font-size:15px;font-weight:700;transition:background .15s}button:hover{background:var(--accent-dark)}button:active{opacity:.9}.uuid-list{flex-direction:column;gap:10px;list-style:none;display:flex}.uuid-item{background:var(--surface-soft);border:1px solid var(--line);color:var(--text);opacity:0;border-radius:6px;justify-content:space-between;align-items:center;padding:12px 14px;font-family:Consolas,Courier New,monospace;font-size:14px;animation:.3s ease-out forwards slideIn;display:flex}@keyframes slideIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.uuid-item:nth-child(2){animation-delay:50ms}.uuid-item:nth-child(3){animation-delay:.1s}.uuid-item:nth-child(4){animation-delay:.15s}.uuid-item:nth-child(5){animation-delay:.2s}.copy-button{color:var(--muted);box-shadow:none;background:0 0;border-radius:6px;justify-content:center;align-items:center;padding:6px;display:flex}.copy-button:hover{background:var(--surface);color:var(--accent)}footer{color:var(--muted);text-align:center;margin-top:2.5rem;font-size:13px}