:root{color-scheme:light;--bg: #eef4ff;--panel: rgba(255, 255, 255, .86);--text: #16213a;--accent: #1f6feb;--accent-hover: #1552b5}*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:radial-gradient(circle at 20% 10%,#f7fbff 0%,var(--bg) 50%,#dde9ff 100%);color:var(--text)}html.ar-active,body.ar-active{background:transparent}canvas{display:block}.ui-layer{position:fixed;inset:env(safe-area-inset-top,0) 0 auto 0;z-index:10;max-width:620px;margin:10px auto 0;padding:14px 16px;background:var(--panel);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:16px;box-shadow:0 6px 24px #0000001f}h1{margin:0 0 8px;font-size:1.1rem}p{margin:0;line-height:1.45;font-size:.92rem}#start-ar{margin-top:12px;border:none;border-radius:12px;padding:10px 16px;font-size:.95rem;font-weight:700;color:#fff;background:var(--accent)}#start-ar:active,#start-ar:hover{background:var(--accent-hover)}.status{margin-top:10px;font-size:.84rem;opacity:.9}@media (max-width: 640px){.ui-layer{margin:8px;max-width:calc(100% - 16px)}}