:root{color-scheme:light;--brand:#004ea7;--brand-strong:#003f8a;--brand-fill:#004ea7;--brand-fill-hover:#003f8a;--on-brand:#fff;--brand-tint:#eef5fd;--brand-rule:#004ea72e;--logo-mark:#d7000f;--accent:#ffd85a;--ink:#22242d;--muted:#5d6573;--line:#dbe3ec;--bg:#f4f7fb;--surface:#fff;--surface-alt:#eef3f8;--inverse:#252630;--on-inverse:#f3f5f9;--on-inverse-muted:#c3c9d4;--danger:#b3202b;--danger-bg:#fdeeee;--success:#1f6b3a;--success-bg:#eef6f0;--warning:#8a5300;--warning-bg:#fff6dd;--warning-line:#f2c14e;--focus:#005fcc;--shadow-soft:0 4px 12px #141e2d1a;--shadow:0 10px 24px #141e2d1f;--radius:8px;--radius-sm:6px;--radius-pill:999px;--container:1120px;--content:820px;--gutter:20px;--header-h:64px;--font:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", YuGothic, Meiryo, system-ui, sans-serif;--font-num:"Helvetica Neue", Arial, "Hiragino Sans", "Noto Sans JP", sans-serif;--mono:ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace}@media 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