:root{--bg-base: #ede9df;--bg-surface: #f7f5ef;--bg-surface-hover: #ffffff;--text-primary: #242424;--text-secondary: #5a5a5a;--primary: #10b981;--primary-hover: #059669;--secondary: #3b82f6;--secondary-hover: #2563eb;--border: rgba(0, 0, 0, .08)}body{margin:0;padding:0;font-family:Helvetica Neue,Arial,Hiragino Kaku Gothic ProN,Hiragino Sans,Meiryo,sans-serif;background-color:var(--bg-base);color:var(--text-primary);overflow-x:hidden}*{box-sizing:border-box}.app-container{min-height:100vh}.antigravity-hero-bg{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:0;background:radial-gradient(circle at 50% -20%,#fff,#ede9df);display:flex;flex-direction:column;padding:3rem 1.5rem}.hero-image-overlay{position:absolute;top:55%;left:50%;transform:translate(-50%,-50%);width:90vw;max-width:700px;height:50vh;min-height:400px;background-image:url(/hero-helmet.jpg);background-size:cover;background-position:center;mix-blend-mode:multiply;opacity:.65;-webkit-mask-image:radial-gradient(ellipse at center,rgba(0,0,0,1) 30%,rgba(0,0,0,0) 70%);mask-image:radial-gradient(ellipse at center,#000 30%,#0000 70%);z-index:0;pointer-events:none}.antigravity-glass-panel{position:relative;z-index:10;margin-top:60vh;min-height:100vh;padding-bottom:50vh;background:linear-gradient(to bottom,transparent 0%,rgba(237,233,223,.3) 250px,rgba(237,233,223,.55) 500px);border-top:none;box-shadow:none;-webkit-mask-image:linear-gradient(to bottom,transparent 0%,black 250px);mask-image:linear-gradient(to bottom,transparent 0%,black 250px);padding:14rem 1rem 6rem;width:100vw;margin-left:calc(-50vw + 50%)}@media (min-width: 900px){.antigravity-glass-panel{width:100vw;margin-left:calc(-50vw + 50%);padding-left:calc(50vw - 450px);padding-right:calc(50vw - 450px)}}.action-card{background:transparent;padding:2.5rem 2rem;cursor:pointer;transition:transform .3s ease,background .3s ease;text-align:center;display:flex;flex-direction:column;align-items:center;border-radius:16px;border:none;box-shadow:none}.action-card:hover{transform:translateY(-3px);opacity:.7;background:transparent;box-shadow:none}