:root{color-scheme:light;--paper:#f4f2ec;--paper2:#ebe9e1;--ink:#19231f;--muted:#65716a;--line:#d9d9cf;--green:#246b50;--lime:#c8f36a;--coral:#d45d43;--white:#fffefa;--mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;--sans:Inter,"Segoe UI",Arial,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased}.topbar{height:70px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,5.8vw,88px);border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink);font-size:13px;font-weight:800;letter-spacing:.13em;text-decoration:none}.brand-dot,.title-period{color:var(--green)}.brand-mark{width:26px;height:24px;display:flex;align-items:center;justify-content:center;gap:2px}.brand-mark i{display:block;width:3px;border-radius:3px;background:var(--green)}.brand-mark 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.mode-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:14px 0 4px}.mode-row label{font:8px var(--mono);letter-spacing:.08em;color:var(--muted)}.mode-row select{max-width:66%;padding:9px 28px 9px 10px;border:1px solid var(--line);border-radius:6px;background:var(--white);color:var(--ink);font:10px var(--sans)}.mode-help{margin:0 0 12px;color:var(--muted);font-size:9px;line-height:1.45}@media(max-width:370px){.mode-row select{max-width:72%;font-size:9px}}
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