.sparks-container{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0}.spark{position:absolute;width:3px;height:3px;border-radius:50%;background:radial-gradient(circle,#FF8A3C 0%,#FF6A1C 40%,transparent 70%);box-shadow:0 0 10px #ff8a3c,0 0 20px #ff6a1c,0 0 30px #d84326,0 5px 3px #ff8a3c99,0 10px 5px #ff6a1c66,0 15px 8px #d843264d,0 20px 10px #d8432633,0 25px 12px #d843261a;animation:sparkle infinite ease-out;opacity:0}.spark:before{content:"";position:absolute;width:100%;height:20px;top:3px;left:50%;transform:translate(-50%);background:linear-gradient(to bottom,rgba(255,138,60,.8) 0%,rgba(255,106,28,.5) 30%,rgba(216,67,38,.3) 60%,transparent 100%);filter:blur(2px);border-radius:50%}@keyframes sparkle{0%{opacity:0;transform:scale(0) translate(0)}5%{opacity:1;transform:scale(1.5) translate(var(--spark-x, 0px),-5px)}15%{opacity:.9;transform:scale(1.2) translate(calc(var(--spark-x, 0px) * 1.5),-12px)}30%{opacity:.7;transform:scale(1) translate(calc(var(--spark-x, 0px) * 2),-22px)}50%{opacity:.4;transform:scale(.8) translate(calc(var(--spark-x, 0px) * 2.5),-35px)}70%{opacity:.2;transform:scale(.5) translate(calc(var(--spark-x, 0px) * 3),-48px)}to{opacity:0;transform:scale(.2) translate(calc(var(--spark-x, 0px) * 3.5),-60px)}}.spark:nth-child(3n){width:4px;height:4px;animation-duration:2s;--spark-x: -8px}.spark:nth-child(3n):before{height:25px}.spark:nth-child(5n){width:2px;height:2px;background:radial-gradient(circle,#FF6A1C 0%,#D84326 40%,transparent 70%);--spark-x: 12px}.spark:nth-child(5n):before{height:15px}.spark:nth-child(7n){animation-duration:2.5s;box-shadow:0 0 15px #ff8a3c,0 0 25px #ff6a1c,0 0 35px #d84326,0 0 45px #ff6a1c80,0 5px 4px #ff8a3cb3,0 10px 6px #ff6a1c80,0 15px 10px #d8432666,0 20px 12px #d843264d,0 30px 15px #d8432626;--spark-x: -15px}.spark:nth-child(7n):before{height:30px}.spark:nth-child(2n){--spark-x: 5px}.spark:nth-child(4n){--spark-x: -10px}.spark:nth-child(6n){--spark-x: 8px}.container{text-align:center;animation:fadeIn 1.5s ease-in}.logo{margin-bottom:2rem;animation:float 3s ease-in-out infinite}.logo img{max-width:350px;height:auto;filter:drop-shadow(0 10px 20px rgba(0,0,0,.3))}.title{font-size:6rem;font-weight:700;font-family:Noto Sans JP,sans-serif;font-optical-sizing:auto;letter-spacing:.1em;animation:slideUp 1s ease-out}.title .felgus{color:#b3ada6;text-shadow:0 2px 8px rgba(0,0,0,.8),0 0 20px rgba(179,173,166,.3)}.title .forge{color:#d84326;text-shadow:0 2px 8px rgba(0,0,0,.8),0 0 30px rgba(255,106,28,.8),0 0 50px rgba(255,106,28,.5),0 0 70px rgba(216,67,38,.3)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.footer{position:fixed;bottom:0;left:0;width:100%;padding:1.5rem;display:flex;flex-direction:column;align-items:center;gap:.5rem;z-index:10;animation:fadeIn 1.5s ease-in .5s both}.email{color:#b3ada6;font-size:1rem;font-weight:500;transition:color .3s ease;text-shadow:0 2px 4px rgba(0,0,0,.8);background:none;border:none;cursor:pointer;font-family:inherit;padding:0;position:relative}.email:hover{color:#ff6a1c;text-shadow:0 2px 4px rgba(0,0,0,.8),0 0 20px rgba(255,106,28,.6)}.tooltip{position:absolute;bottom:100%;left:50%;transform:translate(-50%);background:#1b1b1bf2;color:#f4f7fa;padding:.5rem 1rem;border-radius:.5rem;font-size:.875rem;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .3s ease;margin-bottom:.5rem;border:1px solid #8E8E8E}.email:hover .tooltip{opacity:1}.notification{position:fixed;top:2rem;left:50%;transform:translate(-50%);background:#2d8c8ff2;color:#f4f7fa;padding:1rem 2rem;border-radius:.5rem;font-size:1rem;font-weight:600;z-index:1000;animation:slideDown .3s ease-out;box-shadow:0 4px 12px #00000080;border:1px solid #2D8C8F}@keyframes slideDown{0%{opacity:0;transform:translate(-50%,-20px)}to{opacity:1;transform:translate(-50%)}}.copyright{color:#8e8e8e;font-size:.875rem;margin:0;text-shadow:0 2px 4px rgba(0,0,0,.8)}@media (max-width: 768px){.title{font-size:3.5rem;display:flex;flex-direction:column;gap:.5rem}.logo img{max-width:250px}}@media (max-width: 480px){.title{font-size:3rem;display:flex;flex-direction:column;gap:.5rem}.logo img{max-width:200px}}*{margin:0;padding:0;box-sizing:border-box;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}body{font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-optical-sizing:auto;background:#1b1b1b;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden}#root{width:100%;display:flex;align-items:center;justify-content:center;min-height:100vh;position:relative;z-index:1}