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250);--c-accent-soft:oklch(30% .05 260);--c-accent-text:oklch(18% .03 255);--c-done:oklch(76% .13 155);--c-code-bg:oklch(17% .012 250);--c-shadow:oklch(0% 0 0/.35);--c-shadow-hover:oklch(0% 0 0/.55);--c-feature-from:oklch(38% .1 255);--c-feature-to:oklch(30% .07 250);--focus-ring:0 0 0 3px oklch(75% .14 250/.7)}*{box-sizing:border-box}html{scroll-padding-top:calc(var(--header-height) + 16px);-webkit-text-size-adjust:100%}html,body{margin:0;padding:0}body{background:var(--c-bg);color:var(--c-text);-webkit-font-smoothing:antialiased;font-family:Noto Sans JP,sans-serif;line-height:1.8}a{color:var(--c-accent);text-underline-offset:3px;transition:color 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