.theme-toggle[data-astro-cid-x3pjskd3]{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;background:transparent;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);cursor:pointer;transition:background-color var(--duration) var(--ease),border-color var(--duration) var(--ease)}.theme-toggle[data-astro-cid-x3pjskd3]:hover{background:var(--surface-2);border-color:var(--border-strong)}.theme-toggle__icon[data-astro-cid-x3pjskd3]{transition:opacity var(--duration) var(--ease),transform var(--duration) var(--ease)}[data-astro-cid-x3pjskd3][data-theme=light] .theme-toggle__icon--sun[data-astro-cid-x3pjskd3]{display:none}[data-astro-cid-x3pjskd3][data-theme=light] .theme-toggle__icon--moon[data-astro-cid-x3pjskd3],[data-astro-cid-x3pjskd3][data-theme=dark] .theme-toggle__icon--sun[data-astro-cid-x3pjskd3]{display:block}[data-astro-cid-x3pjskd3][data-theme=dark] .theme-toggle__icon--moon[data-astro-cid-x3pjskd3]{display:none}:root,[data-theme=light]{--surface-1: #faf7ef;--surface-2: #f1ebdd;--surface-3: #e8e0cb;--surface-elevated: #fffdf7;--text-primary: #1c1a14;--text-secondary: #5b5447;--text-tertiary: #8e8775;--text-on-accent: #fffdf7;--border-subtle: #e6dcc6;--border-strong: #c7bda4;--accent: #1d3a5f;--accent-hover: #102845;--accent-soft: #dde2ec;--accent-fg: #1d3a5f;--highlight-bg: #fbecb0;--highlight-fg: #6b5a1f;--shadow-sm: 0 1px 2px rgba(45, 35, 20, .05), 0 1px 3px rgba(45, 35, 20, .07);--shadow-md: 0 4px 6px -1px rgba(45, 35, 20, .06), 0 2px 4px -1px rgba(45, 35, 20, .08);--shadow-lg: 0 10px 15px -3px rgba(45, 35, 20, .09), 0 4px 6px -2px rgba(45, 35, 20, .07)}[data-theme=dark]{--surface-1: #0a0e1a;--surface-2: #11151f;--surface-3: #1a1f2c;--surface-elevated: #131826;--text-primary: #e6edf3;--text-secondary: #9ca7b8;--text-tertiary: #6c7689;--text-on-accent: #ffffff;--border-subtle: #1f2937;--border-strong: #374151;--accent: #60a5fa;--accent-hover: #93c5fd;--accent-soft: rgba(96, 165, 250, .12);--accent-fg: #93c5fd;--highlight-bg: rgba(254, 243, 199, .08);--highlight-fg: #fbbf24;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .5);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .6)}:root{--font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", system-ui, sans-serif;--font-mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--container-narrow: 720px;--container-wide: 1200px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-pill: 999px;--ease: cubic-bezier(.4, 0, .2, 1);--duration: .15s}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;color-scheme:light dark}body{background:var(--surface-1);color:var(--text-primary);font-family:var(--font-sans);font-size:16px;line-height:1.7;min-height:100vh;display:flex;flex-direction:column;transition:background-color var(--duration) var(--ease),color var(--duration) var(--ease)}h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;line-height:1.4;letter-spacing:-.01em;color:var(--text-primary)}h1{font-size:clamp(1.75rem,1.4rem + 1.6vw,2.5rem)}h2{font-size:clamp(1.375rem,1.2rem + .8vw,1.75rem)}h3{font-size:clamp(1.125rem,1.05rem + .4vw,1.375rem)}p{color:var(--text-primary)}a{color:var(--accent);text-decoration:none;transition:color var(--duration) var(--ease)}a:hover{color:var(--accent-hover);text-decoration:underline;text-underline-offset:3px}img{max-width:100%;height:auto;display:block}::selection{background:var(--accent-soft);color:var(--accent-fg)}.container{width:100%;max-width:var(--container-wide);margin:0 auto;padding:0 var(--space-5)}@media (min-width: 768px){.container{padding:0 var(--space-8)}}.container-narrow{width:100%;max-width:var(--container-narrow);margin:0 auto;padding:0 var(--space-5)}@media (min-width: 768px){.container-narrow{padding:0 var(--space-6)}}main{flex:1 0 auto;padding:var(--space-8) 0 var(--space-16)}@media (min-width: 768px){main{padding:var(--space-12) 0 var(--space-20)}}.site-header{background:var(--surface-1);border-bottom:1px solid var(--border-subtle);position:sticky;top:0;z-index:50;backdrop-filter:saturate(180%) blur(8px);-webkit-backdrop-filter:saturate(180%) blur(8px);background:color-mix(in srgb,var(--surface-1) 92%,transparent)}.site-header__inner{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-3) 0}.site-header__brand{font-family:var(--font-serif);font-weight:700;font-size:1.25rem;letter-spacing:-.02em;color:var(--text-primary);text-decoration:none;white-space:nowrap}.site-header__brand:hover{color:var(--text-primary);text-decoration:none}.site-header__brand-accent{color:var(--accent)}.site-header__nav{display:none;margin-left:auto;gap:var(--space-1)}@media (min-width: 768px){.site-header__nav{display:flex}}.site-header__nav-link{padding:var(--space-2) var(--space-3);font-size:.875rem;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-sm);text-decoration:none}.site-header__nav-link:hover{color:var(--text-primary);background:var(--surface-2);text-decoration:none}.site-header__actions{display:flex;align-items:center;gap:var(--space-2);margin-left:auto}@media (min-width: 768px){.site-header__actions{margin-left:var(--space-2)}}.site-header__menu-button{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;background:transparent;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);cursor:pointer}@media (min-width: 768px){.site-header__menu-button{display:none}}.site-header__menu-button:hover{background:var(--surface-2)}.mobile-nav{display:none;flex-direction:column;gap:var(--space-1);padding:var(--space-3) 0 var(--space-4);border-top:1px solid var(--border-subtle)}.mobile-nav.is-open{display:flex}@media (min-width: 768px){.mobile-nav{display:none!important}}.mobile-nav__link{padding:var(--space-3) var(--space-2);font-size:1rem;font-weight:500;color:var(--text-primary);border-radius:var(--radius-sm);text-decoration:none}.mobile-nav__link:hover{background:var(--surface-2);text-decoration:none}.site-footer{flex-shrink:0;background:var(--surface-2);border-top:1px solid var(--border-subtle);padding:var(--space-12) 0;margin-top:var(--space-16)}.site-footer__copy{font-size:.875rem;color:var(--text-secondary);line-height:1.6}.site-footer__links{display:flex;flex-wrap:wrap;gap:var(--space-4);margin-top:var(--space-4);font-size:.875rem}.site-footer__links a{color:var(--text-secondary)}.site-footer__links a:hover{color:var(--text-primary)}.site-footer__copyright{margin-top:var(--space-4);font-size:.8125rem;color:var(--text-tertiary)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}