:root{color-scheme:light;--ink:#163e33;--muted:#60796d;--green:#23674d;--leaf:#ddf0e3;--line:#c4dfcc;--paper:#f6fbf7;--pink:#ed6d9a;--gold:#c19027;--shadow:0 16px 40px #183e2b1c}*{box-sizing:border-box}html{background:#e9f6ed}body{margin:0;color:var(--ink);background:radial-gradient(circle at 78% 12%,#fff 0,transparent 30rem),linear-gradient(145deg,#e8f6ec,#f3f8e8);font:16px/1.55 system-ui,"Yu Gothic",sans-serif}.beats-header{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;padding:8px max(16px,env(safe-area-inset-left));border-bottom:1px solid #d3e7d8;background:#fffffff2;backdrop-filter:blur(12px)}.beats-header>a{display:flex;align-items:center;gap:8px;min-height:44px;color:var(--ink);font-size:.68rem;font-weight:850;letter-spacing:.11em;text-decoration:none}.brand-mark{display:grid;width:32px;height:32px;place-items:center;border:2px solid #317a5d;border-radius:10px;font-weight:900}.beats-header>strong{font:800 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