:root{--ui-bg: #F5F3EE;--ui-surface: #FFFFFF;--ui-text: #242420;--ui-muted: #85847F;--ui-border: #DDDAD3;--env-gradient: radial-gradient(circle at 50% 35%, #DCE8F7 0%, #F2EFE9 52%, #FCE4DF 100%);--font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box;margin:0;padding:0;border-radius:0!important;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}html,body{width:100%;height:100%;overflow:hidden;background:var(--env-gradient);color:var(--ui-text);font-family:var(--font-sans);touch-action:manipulation;transition:background .8s ease}body.env-dark-text{--hud-ink: #242420;--hud-muted: rgba(36, 36, 32, .58)}body.env-light-text{--hud-ink: #FFFFFF;--hud-muted: rgba(255, 255, 255, .72)}#stage-container{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100%;cursor:pointer;z-index:1}.hud-top{position:fixed;top:0;left:0;right:0;z-index:10;display:flex;align-items:flex-start;justify-content:space-between;padding:28px 36px;pointer-events:none}.hud-brand{font-size:20px;font-weight:800;color:var(--hud-ink);letter-spacing:.02em}.hud-right{display:flex;align-items:flex-start;gap:28px}.hud-metric{display:flex;flex-direction:column;align-items:flex-end}.hud-metric-val{font-size:36px;font-weight:800;line-height:1;color:var(--hud-ink);font-variant-numeric:tabular-nums}.hud-metric-muted{color:var(--hud-muted)}.hud-metric-label{font-size:13px;font-weight:600;color:var(--hud-muted);margin-top:4px}.hud-pause-btn{pointer-events:auto;background:var(--ui-surface);color:var(--ui-text);border:1px solid var(--ui-border);padding:10px 18px;font-size:14px;font-weight:600}.perfect-callout{position:fixed;left:36px;bottom:32px;z-index:10;pointer-events:none;background:var(--ui-surface);color:var(--ui-text);border:1px solid var(--ui-border);padding:8px 16px;font-size:14px;font-weight:700;opacity:0;transform:translateY(6px);transition:opacity .15s ease,transform .15s ease}.perfect-callout.is-visible{opacity:1;transform:translateY(0)}.perfect-callout.is-streak-high{background:var(--ui-text);color:var(--ui-surface);border-color:var(--ui-text)}.perfect-callout.is-streak-max{background:var(--accent-color, var(--ui-text));color:var(--ui-surface);border-color:var(--ui-text)}.rron-site-link{position:fixed;right:36px;bottom:28px;z-index:30;display:inline-flex;align-items:center;gap:5px;color:var(--hud-ink);text-decoration:none;font-size:14px;font-weight:600;line-height:1;opacity:.78;pointer-events:auto;transition:opacity .15s ease,transform .15s ease}.rron-site-link:hover{opacity:1}.rron-site-link svg{display:block;transform:translateY(-.5px)}.overlay-screen{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;display:flex;align-items:center;justify-content:flex-end;padding:36px 5vw;pointer-events:auto;transition:opacity .2s ease}.overlay-screen.is-hidden{display:none!important}.menu-box{background:var(--ui-bg);color:var(--ui-text);border:1px solid var(--ui-border);padding:36px;width:100%;max-width:440px}.pause-box,.gameover-box{max-width:340px}.menu-title{font-size:48px;font-weight:800;line-height:1;letter-spacing:-.02em;color:var(--ui-text)}.menu-tagline{font-size:16px;font-weight:400;color:var(--ui-muted);margin-top:8px;margin-bottom:28px}.section-title{font-size:28px;font-weight:800;margin-bottom:24px}.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:24px}.mode-card{display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;text-align:left;background:var(--ui-surface);color:var(--ui-text);border:1px solid var(--ui-border);padding:14px 12px;min-height:92px;font-family:var(--font-sans);cursor:pointer;transition:background .12s ease,border-color .12s ease}.mode-card:hover{border-color:var(--ui-text)}.mode-card.is-selected{background:var(--ui-text);color:var(--ui-surface);border-color:var(--ui-text)}.mode-card-name{font-size:15px;font-weight:700}.mode-card-tag{font-size:12px;line-height:1.3;color:var(--ui-muted);margin-top:8px}.mode-card.is-selected .mode-card-tag{color:#ffffffc2}.square-btn{font-family:var(--font-sans);cursor:pointer;transition:background .12s ease,color .12s ease,border-color .12s ease}.primary-btn{width:100%;background:var(--ui-text);color:var(--ui-surface);border:1px solid var(--ui-text);padding:15px 20px;font-size:15px;font-weight:700}.primary-btn:hover{background:#3a3a35;border-color:#3a3a35}.secondary-btn{width:100%;background:var(--ui-surface);color:var(--ui-text);border:1px solid var(--ui-border);padding:14px 20px;font-size:15px;font-weight:600}.secondary-btn:hover{border-color:var(--ui-text)}.text-btn{width:100%;background:transparent;color:var(--ui-muted);border:1px solid transparent;padding:10px 16px;font-size:14px;font-weight:600}.text-btn:hover{color:var(--ui-text)}.stack-actions{display:flex;flex-direction:column;gap:8px}.go-stats{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--ui-border);padding-bottom:20px;margin-bottom:20px}.go-stat-block{display:flex;flex-direction:column}.go-stat-label{font-size:13px;font-weight:600;color:var(--ui-muted)}.go-stat-val{font-size:44px;font-weight:800;line-height:1.05;margin-top:4px;font-variant-numeric:tabular-nums}.go-stat-muted{color:var(--ui-muted)}.is-hidden{display:none!important}@media (max-width: 768px){.hud-top{padding:18px 20px}.hud-metric-val{font-size:28px}.hud-right{gap:18px}.overlay-screen{align-items:flex-end;justify-content:center;padding:16px}.menu-box,.pause-box,.gameover-box{max-width:100%;padding:24px}.menu-title{font-size:38px}.rron-site-link{right:20px;bottom:18px;font-size:13px}}