:root{--color-bg:#ffffff;--color-text:#222;--color-muted:#666;--color-accent:#111;--color-accent-2:#d91f26;--color-seat:#e74c3c;--color-mat:#16a34a;--color-accessory:#9333ea;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--shadow-sm:0 1px 2px rgba(0,0,0,.06);--shadow-md:0 4px 14px rgba(0,0,0,.08);--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-8:48px;--space-12:64px;--container:1200px;--font-sans: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "游ゴシック Medium", "Yu Gothic Medium", "Yu Gothic", "メイリオ", Meiryo, "ＭＳ Ｐゴシック", sans-serif}html,body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg)}.container{max-width:var(--container);margin:0 auto;padding:0 var(--space-5)}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 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