:root{--bg: #ffffff;--surface: #ffffff;--surface-soft: #f5f4f1;--surface-warm: #fafaf7;--text: #1d1d1f;--text-secondary: #4a4a4f;--text-muted: #86868b;--text-faint: #b8b8bd;--border: rgba(0, 0, 0, .08);--border-strong: rgba(0, 0, 0, .16);--accent: #2563eb;--danger: #c0392b;--radius: 14px;--radius-sm: 8px;--serif: "Lora", "Iowan Old Style", Georgia, serif;--sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;--shadow-1: 0 1px 2px rgba(0, 0, 0, .04);--shadow-2: 0 8px 24px rgba(0, 0, 0, .08)}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{max-width:720px;margin:0 auto;padding:0 0 120px}body.route-editor #app,body.route-editor 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