:root{--bg: #f4f5f7;--card: #ffffff;--text: #111827;--muted: #6b7280;--line: #e5e7eb;--red: #dc2626;--red-soft: #fee2e2;--blue: #2563eb;--blue-soft: #dbeafe;--ok: #059669;--primary: #111827;--primary-text: #ffffff;--warn-bg: #fef3c7;--warn-text: #92400e;--radius: 14px;color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #0f1115;--card: #1a1d24;--text: #f3f4f6;--muted: #9ca3af;--line: #2d323c;--red: #ef4444;--red-soft: #3b1414;--blue: #3b82f6;--blue-soft: #132242;--ok: #10b981;--primary: #f3f4f6;--primary-text: #111827;--warn-bg: #3a2c07;--warn-text: #fcd34d;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,Yu Gothic UI,sans-serif;font-size:16px;line-height:1.5;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}.screen{max-width:560px;margin:0 auto;padding:8px 16px calc(24px + 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