*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0}body{overflow:hidden;background:#03060a;color:#edf7ff;font-family:Hiragino Sans,Yu Gothic,system-ui,sans-serif}.stage-shell{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:#03060a}.stage-canvas,.encounter-canvas,.hud-canvas{grid-area:1 / 1;width:min(100vw,calc(100vh * 16 / 9));height:min(100vh,56.25vw);display:block}.stage-canvas{background:#03060a;border:1px solid rgba(170,224,239,.18)}.hud-canvas,.encounter-canvas{pointer-events:none}.stage-select-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at center,#050d18,#010408);display:flex;justify-content:center;align-items:center;z-index:100;font-family:Hiragino Sans,Yu Gothic,system-ui,sans-serif;color:#edf7ff;overflow:hidden}.stage-select-overlay.hidden{display:none!important}.stage-select-container{width:min(90vw,1200px);max-height:90vh;display:flex;flex-direction:column;align-items:center;gap:2.5rem}.stage-select-header{text-align:center}.stage-select-title{font-size:3.5rem;font-weight:900;margin:0;letter-spacing:.5rem;background:linear-gradient(135deg,#edf7ff 30%,#60b0ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-shadow:0 0 30px rgba(96,176,255,.35)}.stage-select-subtitle{font-size:.95rem;font-weight:700;color:#94ecffa6;margin:.5rem 0 0;letter-spacing:.3rem;text-transform:uppercase}.stage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;width:100%}.stage-card{color:inherit;font:inherit;background:#0a192f59;border:1px solid rgba(148,236,255,.12);border-radius:12px;padding:1.75rem;display:flex;flex-direction:column;align-items:center;text-align:center;transition:all .3s cubic-bezier(.25,.8,.25,1);position:relative;overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.stage-card:disabled{color:inherit}.stage-card:before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:var(--theme-color);opacity:.3;transition:opacity .3s ease}.stage-card.unlocked{cursor:pointer}.stage-card.unlocked:hover,.stage-card.unlocked:focus-visible{outline:none;transform:translateY(-8px);border-color:var(--theme-color);box-shadow:0 10px 30px #00000080,0 0 20px rgba(var(--theme-color-rgb),.25);background:#0a192f8c}.stage-card.unlocked:hover:before,.stage-card.unlocked:focus-visible:before{opacity:1}.stage-card.locked{opacity:.35;cursor:not-allowed;background:#050a1226;border-color:#ffffff0d}.stage-badge{font-size:.7rem;font-weight:800;letter-spacing:.15rem;text-transform:uppercase;padding:.25rem .6rem;border-radius:4px;margin-bottom:1.5rem;border:1px solid currentColor}.stage-name{font-size:2rem;font-weight:900;text-transform:uppercase;margin:0 0 .5rem;color:#fff;letter-spacing:.1rem}.stage-range{font-size:.8rem;color:#e8ffff80;margin-bottom:2rem;font-weight:600}.stage-stats{width:100%;border-top:1px solid rgba(148,236,255,.08);padding-top:1.25rem;text-align:left;font-family:Menlo,Consolas,monospace;font-size:.72rem;line-height:1.5}.stage-stats-title{font-family:Hiragino Sans,Yu Gothic,sans-serif;font-weight:700;text-transform:uppercase;color:#94ecff73;margin-bottom:.75rem;font-size:.7rem;letter-spacing:.1rem}.stage-stat-row{display:flex;justify-content:space-between;margin-bottom:.35rem}.stage-stat-label{color:#e8ffff66}.stage-stat-value{color:#e8ffffd9;font-weight:700}.stage-stat-empty{color:#e8ffff40;text-align:center;font-style:italic;margin-top:.5rem}.stage-lock-icon{margin-bottom:1rem;color:#ffffff4d;font-size:.72rem;font-weight:900;letter-spacing:.18rem}.stage-locked-label{color:#e8ffff33;text-align:center}.stage-card.easy{--theme-color: #1cc5d8;--theme-color-rgb: 28, 197, 216}.stage-card.normal{--theme-color: #1dd870;--theme-color-rgb: 29, 216, 112}.stage-card.hard{--theme-color: #ac5fff;--theme-color-rgb: 172, 95, 255}.stage-card.extreme{--theme-color: #ff5e1c;--theme-color-rgb: 255, 94, 28}