:root{--paper: #FFFFFF;--mist: #F5F5FA;--line: #E4E4EE;--ink: #12121F;--ink-mute: #5D5D74;--accent: #4F46E5;--accent-text: #3D36B8;--accent-tint: #EEEDFC;--code-bg: #12121F;--shadow: 0 1px 2px rgba(18, 18, 31, .06);--text-h1: clamp(2.25rem, 5.5vw, 4rem);--text-h2: clamp(1.75rem, 3.5vw, 2.5rem);--text-h3: 1.25rem;--text-body: 1rem;--text-body-mobile: .9375rem;--text-label: .75rem;--tracking-display: -.04em;--tracking-body: .02em;--tracking-label: .12em;--leading-display: 1.25;--leading-body: 1.9;--container-max: 1200px;--content-max: 780px;--label-width: 160px;--section-gap: clamp(72px, 10vw, 140px);--focus-ring: 2px solid var(--accent);--focus-offset: 2px}:root{--font-display: "Noto Sans JP", sans-serif;--font-body: "Noto Sans JP", sans-serif;--font-mono: "JetBrains Mono", "Noto Sans JP", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}body{font-family:var(--font-body);font-weight:400;font-size:var(--text-body);line-height:var(--leading-body);letter-spacing:var(--tracking-body);color:var(--ink);background-color:var(--paper);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media(max-width:767px){body{font-size:var(--text-body-mobile)}}:focus-visible{outline:var(--focus-ring);outline-offset:var(--focus-offset)}:focus:not(:focus-visible){outline:none}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}img,picture,video,canvas,svg{display:block;max-width:100%}img{height:auto}a{color:var(--accent-text);text-decoration:none}a:hover{text-decoration:underline}.header[data-astro-cid-3ef6ksr2]{position:fixed;top:0;left:0;right:0;z-index:50;transition:background-color .2s ease,box-shadow .2s ease}.header--scrolled .header[data-astro-cid-3ef6ksr2],.header[data-astro-cid-3ef6ksr2].header--scrolled{background-color:var(--paper);box-shadow:0 1px 0 var(--line)}.header-inner[data-astro-cid-3ef6ksr2]{max-width:var(--container-max);margin:0 auto;display:flex;align-items:center;gap:2rem;padding:1rem 1.5rem}.header-logo[data-astro-cid-3ef6ksr2]{text-decoration:none;color:var(--ink);font-weight:500;font-size:1rem;flex-shrink:0}.header-logo[data-astro-cid-3ef6ksr2]:hover{text-decoration:none}.logo-mark[data-astro-cid-3ef6ksr2]{color:var(--ink-mute);font-size:.75rem}.header-nav[data-astro-cid-3ef6ksr2]{display:flex;gap:1.5rem;margin-left:auto}.nav-link[data-astro-cid-3ef6ksr2]{font-size:.875rem;color:var(--ink);text-decoration:none;transition:color .15s ease}.nav-link[data-astro-cid-3ef6ksr2]:hover{color:var(--accent-text);text-decoration:none}.header-cta[data-astro-cid-3ef6ksr2]{font-size:.8125rem;font-weight:500;color:#fff;background-color:var(--accent);padding:.5rem 1.25rem;border-radius:.375rem;text-decoration:none;flex-shrink:0;transition:background-color .15s ease}.header-cta[data-astro-cid-3ef6ksr2]:hover{background-color:var(--accent-text);text-decoration:none}.header-toggle[data-astro-cid-3ef6ksr2]{display:none;background:none;border:none;color:var(--ink);cursor:pointer;padding:.25rem}@media(max-width:767px){.header-nav[data-astro-cid-3ef6ksr2]{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:var(--paper);padding:1rem 1.5rem 1.5rem;border-bottom:1px solid var(--line);gap:0}.header-nav[data-astro-cid-3ef6ksr2].is-open{display:flex}.nav-link[data-astro-cid-3ef6ksr2]{padding:.75rem 0;border-bottom:1px solid var(--line)}.header-cta[data-astro-cid-3ef6ksr2]{display:none}.header-toggle[data-astro-cid-3ef6ksr2]{display:block;margin-left:auto}}.footer[data-astro-cid-sz7xmlte]{border-top:1px solid var(--line);padding:3rem 1.5rem 1.5rem}.footer-inner[data-astro-cid-sz7xmlte]{max-width:var(--container-max);margin:0 auto;display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:2rem}.footer-logo[data-astro-cid-sz7xmlte]{font-weight:500;margin-bottom:.25rem}.footer-copy[data-astro-cid-sz7xmlte]{font-size:.8125rem;color:var(--ink-mute)}.footer-heading[data-astro-cid-sz7xmlte]{font-family:var(--font-mono);font-weight:500;font-size:var(--text-label);letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--ink-mute);margin-bottom:.75rem}.footer-list[data-astro-cid-sz7xmlte]{list-style:none}.footer-list[data-astro-cid-sz7xmlte] li[data-astro-cid-sz7xmlte]{margin-bottom:.375rem}.footer-list[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{font-size:.875rem;color:var(--ink-mute);text-decoration:none}.footer-list[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--accent-text)}.footer-bottom[data-astro-cid-sz7xmlte]{max-width:var(--container-max);margin:2rem auto 0;padding-top:1.5rem;border-top:1px solid var(--line)}.footer-operator[data-astro-cid-sz7xmlte]{font-size:.75rem;color:var(--ink-mute);margin-bottom:.25rem}.operator-link[data-astro-cid-sz7xmlte]{color:var(--ink-mute);text-decoration:underline}.operator-link[data-astro-cid-sz7xmlte]:hover{color:var(--accent-text)}.footer-copyright[data-astro-cid-sz7xmlte]{font-size:.75rem;color:var(--ink-mute)}.mono[data-astro-cid-sz7xmlte]{font-family:var(--font-mono);font-weight:500}@media(max-width:767px){.footer-inner[data-astro-cid-sz7xmlte]{grid-template-columns:1fr 1fr}}@media(max-width:480px){.footer-inner[data-astro-cid-sz7xmlte]{grid-template-columns:1fr}}