:root{--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);--color-bg:#f7fafc;--color-surface:#fff;--color-surface-strong:#eef6ff;--color-text:#172033;--color-muted:#5f6b7a;--color-border:#d8e1ea;--color-safe:#15803d;--color-safe-bg:#dcfce7;--color-warning:#b45309;--color-warning-bg:#fef3c7;--color-danger:#b91c1c;--color-danger-bg:#fee2e2;--color-primary:#2563eb;--color-primary-dark:#1d4ed8;--color-teal:#0f766e;--shadow-soft:0 18px 50px #0f172a1f;--app-max-width:480px;--font-base:system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", sans-serif;--font-mono:ui-monospace, "SF Mono", Consolas, "Noto Sans Mono CJK JP", monospace}html,body{overscroll-behavior:contain;min-height:100%;font-family:var(--font-base);color:var(--color-text);background:radial-gradient(circle at 0 0,#2563eb1f,#0000 32rem),linear-gradient(#f8fbff 0%,#edf5f2 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