:root{--color-bg: #f5f0e8;--color-bg-soft: #ebe3d3;--color-surface: #faf6ef;--color-ink: #1b1b1f;--color-ink-soft: #2a2a30;--color-ink-mute: #6b665e;--color-line: #d9d0bd;--color-accent: #cc785c;--color-accent-strong: #b4593c;--font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;--font-sans: "Inter", "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", "YuGothic", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--fs-xs: .75rem;--fs-sm: .875rem;--fs-base: 1rem;--fs-lg: 1.125rem;--fs-xl: 1.25rem;--fs-2xl: 1.5rem;--fs-3xl: 2rem;--fs-4xl: 2.75rem;--fs-5xl: 3.75rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 2rem;--space-12: 3rem;--space-16: 4rem;--space-24: 6rem;--space-32: 8rem;--container-max: 64rem;--container-pad: var(--space-6);--radius-sm: 4px;--radius-md: 8px;--transition-base: .2s ease}*,*:before,*:after{box-sizing:border-box}html,body,h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0}ul,ol{padding:0;list-style:none}img,svg{display:block;max-width:100%}a{color:inherit;text-decoration:none}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);font-size:var(--fs-base);line-height:1.75;color:var(--color-ink);background:var(--color-bg);font-feature-settings:"palt";text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--font-serif);font-weight:600;line-height:1.3;letter-spacing:.02em;color:var(--color-ink)}h1{font-size:var(--fs-4xl)}h2{font-size:var(--fs-3xl)}h3{font-size:var(--fs-2xl)}a:hover{color:var(--color-accent-strong)}.container{max-width:var(--container-max);margin-inline:auto;padding-inline:var(--container-pad)}.section{padding-block:var(--space-24)}.lead{font-size:var(--fs-lg);color:var(--color-ink-soft);line-height:1.9}.muted{color:var(--color-ink-mute);font-size:var(--fs-sm)}.eyebrow{font-family:var(--font-mono);font-size:var(--fs-xs);letter-spacing:.15em;text-transform:uppercase;color:var(--color-accent-strong)}.link-arrow{color:var(--color-accent-strong);font-weight:500}.link-arrow:hover{color:var(--color-ink)}@media(max-width:640px){:root{--fs-4xl: 2rem;--fs-5xl: 2.5rem;--container-pad: var(--space-4)}.section{padding-block:var(--space-16)}}.logo[data-astro-cid-tvrurpns]{display:inline-block;vertical-align:middle}.site-header[data-astro-cid-5hce7sga]{border-bottom:1px solid var(--color-line);background:var(--color-bg);position:sticky;top:0;z-index:10;backdrop-filter:saturate(180%) blur(6px)}.header-inner[data-astro-cid-5hce7sga]{display:flex;align-items:center;justify-content:space-between;gap:var(--space-6);padding-block:var(--space-4)}.brand[data-astro-cid-5hce7sga]{display:inline-flex}.nav-list[data-astro-cid-5hce7sga]{display:flex;gap:var(--space-6)}.nav-link[data-astro-cid-5hce7sga]{font-size:var(--fs-sm);font-weight:500;color:var(--color-ink-mute);transition:color var(--transition-base)}.nav-link[data-astro-cid-5hce7sga]:hover,.nav-link[data-astro-cid-5hce7sga].active{color:var(--color-ink)}@media(max-width:720px){.header-inner[data-astro-cid-5hce7sga]{flex-direction:column;align-items:flex-start;gap:var(--space-3)}.nav-list[data-astro-cid-5hce7sga]{flex-wrap:wrap;gap:var(--space-4)}}.site-footer[data-astro-cid-5hce7sga]{border-top:1px solid var(--color-line);background:var(--color-bg-soft);padding-block:var(--space-12);margin-top:var(--space-24)}.footer-inner[data-astro-cid-5hce7sga]{display:grid;gap:var(--space-6)}.footer-brand[data-astro-cid-5hce7sga]{display:flex;flex-direction:column;gap:var(--space-2)}.footer-nav[data-astro-cid-5hce7sga]{display:flex;flex-wrap:wrap;gap:var(--space-6);font-size:var(--fs-sm)}.footer-nav[data-astro-cid-5hce7sga] a[data-astro-cid-5hce7sga]{color:var(--color-ink-soft)}.footer-nav[data-astro-cid-5hce7sga] a[data-astro-cid-5hce7sga]:hover{color:var(--color-accent-strong)}.footer-legal[data-astro-cid-5hce7sga]{display:flex;flex-wrap:wrap;gap:var(--space-4);font-size:var(--fs-xs)}.footer-legal[data-astro-cid-5hce7sga] a[data-astro-cid-5hce7sga]{color:var(--color-ink-mute)}.footer-legal[data-astro-cid-5hce7sga] a[data-astro-cid-5hce7sga]:hover{color:var(--color-accent-strong)}.copyright[data-astro-cid-5hce7sga]{margin-top:var(--space-2)}