style(embed): ambient hearts denser and lower (user feedback — spawn 160-320ms, band 140-244px)
Co-Authored-By: Claude Code <noreply@anthropic.com>
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@@ -30,13 +30,15 @@ const COLORS = ['#FF6B7A', '#FF8B98'] as const;
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const DRIFTS = ['-8px', '5px', '8px'] as const;
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const MAX_ACTIVE = 8;
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const STAGGER_MS = 300;
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/** 常驻节奏:400–800ms 随机间隔一颗(1.6s 生命周期下稳态 3–5 颗在屏,
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* 与事件心共享同屏上限 8——事件到来时仍有余量)。 */
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const AMBIENT_MIN_MS = 400;
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const AMBIENT_MAX_MS = 800;
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/** 常驻心纵向分布带(视口坐标):避开顶部 44px 操作区,下缘留 24px。 */
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const AMBIENT_TOP_MIN = 56;
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const AMBIENT_TOP_MAX = 232;
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/** 常驻节奏(2026-09-23 用户反馈"太稀疏"):160–320ms 随机间隔一颗
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* (1.6s 生命周期下稳态 ≈6–8 颗在屏,贴近同屏上限但不顶满)。 */
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const AMBIENT_MIN_MS = 160;
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const AMBIENT_MAX_MS = 320;
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/** 常驻心纵向分布带(视口坐标;2026-09-23 用户反馈"太靠上"下移):
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* 原点集中在下半带(140–244px),上浮 110px 后到达窗口上部——视觉重心
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* 从底部涌起,不再贴近顶部操作区。 */
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const AMBIENT_TOP_MIN = 140;
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const AMBIENT_TOP_MAX = 244;
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/** 全局序号(尺寸/颜色/漂移按 n%3 轮转——与效果示例 burst() 一致)。 */
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let particleSeq = 0;
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