:root{color-scheme:light;--bg: #f6f7f9;--bg-elev: #ffffff;--bg-sunk: #eef1f5;--bg-tint: #e8edf8;--bg-grid: rgba(20, 30, 50, .04);--fg: #1b2331;--fg-mid: #4a5568;--fg-soft: #4a5568;--fg-faint: #7a8494;--line: #dde2e9;--line-strong: #c9d0da;--line-soft: #e9edf2;--brand: #34549c;--brand-soft: #e8edf8;--himari: #c8503f;--himari-bg: #fbedea;--labo: #1f7a6e;--labo-bg: #e6f3f1;--facts: #177a4c;--facts-bg: #e7f5ec;--claims: #2b62c9;--claims-bg: #e9f0fc;--unc: #9a5b00;--unc-bg: #fbf2e0;--img-filter: none;--teal: #1f7a6e;--teal-deep: #155d54;--teal-soft: #4fa093;--teal-tint: #e6f3f1;--teal-tint-2: #d4ebe7;--slate: #4a5c78;--slate-tint: #e9f0fc;--amber: #9a5b00;--amber-tint: #fbf2e0;--rose: #c8503f;--rose-tint: #fbedea;--cat-news: #34549c;--cat-news-tint: #e8edf8;--cat-hands-on: #9a5b00;--cat-hands-on-tint: #fbf2e0;--cat-smartphone: #3a7d8a;--cat-smartphone-tint: #dfecef;--cat-mobile-plan: #1f7a6e;--cat-mobile-plan-tint: #e6f3f1;--cat-gadgets: #7a6a4a;--cat-gadgets-tint: #efeae0;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 3px rgba(20, 30, 50, .08), 0 4px 16px rgba(20, 30, 50, .06);--shadow-md: 0 1px 3px rgba(20, 30, 50, .08), 0 4px 16px rgba(20, 30, 50, .06);--shadow-lg: 0 2px 6px rgba(20, 30, 50, .08), 0 12px 32px rgba(20, 30, 50, .08);--font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-heading: "Zen Maru Gothic", "Noto Sans JP", sans-serif;--font-num: "Inter", "Noto Sans JP", sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;--ink: var(--fg);--ink-soft: var(--fg-mid);--ink-faint: var(--fg-faint);--surface: var(--bg-elev);--surface2: var(--bg-sunk);--shadow: var(--shadow-sm);--color-text: var(--fg);--color-muted: var(--fg-soft);--color-border: var(--line);--color-bg: var(--bg);--color-surface: var(--bg-elev);--color-mint: var(--teal);--color-mint-dark: var(--teal-deep);--color-blue: var(--slate-tint);--color-caution: var(--amber-tint);--shadow-soft: var(--shadow-md)}html.dark{color-scheme:dark;--bg: #12161e;--bg-elev: #1a202b;--bg-sunk: #10141b;--bg-tint: #232d42;--bg-grid: rgba(255, 255, 255, .03);--fg: #e7eaf0;--fg-mid: #aeb6c4;--fg-soft: #aeb6c4;--fg-faint: #7c8698;--line: #303947;--line-strong: #3c4656;--line-soft: #262e3a;--brand: #9ab2ec;--brand-soft: #232d42;--himari: #f0907f;--himari-bg: #33231f;--labo: #63c7b8;--labo-bg: #16302c;--facts: #4cc38a;--facts-bg: #152b20;--claims: #8fb0f5;--claims-bg: #1b2740;--unc: #e2a64e;--unc-bg: #332813;--img-filter: brightness(.92);--teal: #63c7b8;--teal-deep: #7ed3c6;--teal-soft: #4a9e91;--teal-tint: #16302c;--teal-tint-2: #1d3d38;--slate: #8fa4c4;--slate-tint: #1b2740;--amber: #e2a64e;--amber-tint: #332813;--rose: #f0907f;--rose-tint: #33231f;--cat-news: #9ab2ec;--cat-news-tint: #232d42;--cat-hands-on-tint: #332813;--cat-smartphone: #6cb0bd;--cat-smartphone-tint: #1d2c30;--cat-mobile-plan: #63c7b8;--cat-mobile-plan-tint: #16302c;--cat-gadgets: #b8a37a;--cat-gadgets-tint: #2a261d;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4), 0 4px 20px rgba(0, 0, 0, .3);--shadow-md: 0 1px 3px rgba(0, 0, 0, .4), 0 4px 20px rgba(0, 0, 0, .3);--shadow-lg: 0 2px 6px rgba(0, 0, 0, .45), 0 12px 32px rgba(0, 0, 0, .35)}html.dark .article-content img{filter:var(--img-filter)}*{box-sizing:border-box}html{background:var(--bg);font-family:var(--font-sans)}body{min-height:100vh;margin:0;background:radial-gradient(circle at 1px 1px,var(--bg-grid) 1px,transparent 0),var(--bg);background-size:24px 24px,auto;color:var(--fg);font-feature-settings:"palt";line-height:1.7;letter-spacing:.01em;-webkit-font-smoothing:antialiased}img{display:block;max-width:100%;height:auto}a{color:var(--teal-deep);text-decoration-thickness:.08em;text-underline-offset:.18em}button{font:inherit}.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 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