@font-face{font-family:Poppins;font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/poppins-regular.woff2') format('woff2')}
@font-face{font-family:Poppins;font-style:normal;font-weight:500;font-display:swap;src:url('/assets/fonts/poppins-medium.woff2') format('woff2')}
@font-face{font-family:Poppins;font-style:normal;font-weight:600;font-display:swap;src:url('/assets/fonts/poppins-semibold.woff2') format('woff2')}
@font-face{font-family:Poppins;font-style:normal;font-weight:700;font-display:swap;src:url('/assets/fonts/poppins-bold.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('/assets/fonts/ibm-plex-mono-regular.woff2') format('woff2')}

:root{--font-ui:'Poppins',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--font-mono:'IBM Plex Mono',ui-monospace,monospace;--ink:#0d1220;--text-secondary:#454c5c;--text-muted:#4a5060;--border-strong:#e6e9ef;--border-soft:#edeff3;--border-control:#858b96;--bg:#fff;--bg-section:#fafbfd;--bg-control:#f1f3f7;--bg-hover:#e7ebf2;--blue:#1b47c4;--link-hover:#14328a;--footer-bg:#0d1220;--footer-text:#b4bdcf;--focus:#1b47c4;color-scheme:light}
:root[data-theme=dark]{--ink:#eef1f7;--text-secondary:#b4bdcf;--text-muted:#a8afbe;--border-strong:#303b50;--border-soft:#232b3d;--border-control:#788296;--bg:#0d1220;--bg-section:#10162a;--bg-control:#1a2133;--bg-hover:#232c42;--blue:#8cadff;--link-hover:#b3cbff;--footer-bg:#05070f;--footer-text:#b4bdcf;--focus:#8cadff;color-scheme:dark}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--ink:#eef1f7;--text-secondary:#b4bdcf;--text-muted:#a8afbe;--border-strong:#303b50;--border-soft:#232b3d;--border-control:#788296;--bg:#0d1220;--bg-section:#10162a;--bg-control:#1a2133;--bg-hover:#232c42;--blue:#8cadff;--link-hover:#b3cbff;--footer-bg:#05070f;--footer-text:#b4bdcf;--focus:#8cadff;color-scheme:dark}}
*{box-sizing:border-box}
html{scroll-padding-top:112px;scroll-behavior:smooth;accent-color:var(--blue);scrollbar-color:var(--border-control) var(--bg);text-size-adjust:100%;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-ui);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
::selection{background:var(--blue);color:var(--bg)}
[hidden]{display:none!important}
svg{display:block;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
a{color:var(--blue);text-underline-offset:3px;text-decoration-thickness:1px;transition:color 160ms ease-out}
a:hover{color:var(--link-hover)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--focus);outline-offset:5px;border-radius:4px}
button,summary{-webkit-tap-highlight-color:transparent}
button{font:inherit}
.wrap{width:100%;max-width:1120px;margin-inline:auto;padding-inline:32px}
.skip-link{position:fixed;z-index:100;left:16px;top:12px;padding:12px 18px;background:var(--ink);color:var(--bg);border-radius:8px;transform:translateY(-160%)}
.skip-link:focus{transform:translateY(0)}
.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--border-soft);background:var(--bg)}
.site-header__inner{min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:18px}
.wordmark{font-size:19px;font-weight:700;letter-spacing:-.035em;color:var(--ink);text-decoration:none;white-space:nowrap}
.wordmark:hover{color:var(--ink)}
.wordmark span{color:var(--blue)}
.site-header__nav{display:flex;align-items:center;gap:28px}
.site-header__nav>a{min-height:44px;display:inline-flex;align-items:center;font-size:14px;font-weight:500;color:var(--text-secondary);text-decoration:none}
.site-header__nav>a:hover{color:var(--ink)}
.theme-toggle{display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--border-control);border-radius:10px;background:var(--bg);color:var(--ink);cursor:pointer;transition:background 160ms ease-out,border-color 160ms ease-out}
.theme-toggle:hover{background:var(--bg-control);border-color:var(--ink)}
.theme-toggle:active{background:var(--bg-hover)}
.icon-moon{display:none}
:root[data-theme=dark] .icon-sun{display:none}
:root[data-theme=dark] .icon-moon{display:block}
.prose{padding-block:72px 96px;outline:none}
.prose__inner{max-width:min(700px,64ch)}
h1,h2,h3,p{margin:0}
h1{font-size:44px;line-height:1.15;font-weight:700;letter-spacing:-.03em;text-wrap:balance}
.prose__meta{margin-top:16px;font-family:var(--font-mono);font-size:12px;line-height:1.8;letter-spacing:.065em;text-transform:uppercase;color:var(--text-muted)}
.prose__summary{margin-top:32px;padding:20px 24px;border:1px solid var(--border-strong);border-radius:14px;background:var(--bg-section);font-size:15.5px;line-height:1.75;color:var(--text-secondary)}
.prose strong{font-weight:600;color:var(--ink)}
.contents{margin-top:26px;border-bottom:1px solid var(--border-soft);padding-bottom:14px}
.contents summary{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:44px;color:var(--text-secondary);font-size:14px;font-weight:500;list-style:none;cursor:pointer}
.contents summary::-webkit-details-marker{display:none}
.contents summary svg{transition:transform 180ms ease-out}
.contents[open] summary svg{transform:rotate(180deg)}
.contents nav{display:grid;grid-template-columns:1fr 1fr;gap:2px 24px;padding-block:10px 6px}
.contents nav a{display:flex;align-items:center;min-height:44px;font-size:13px;line-height:1.6;text-decoration:none}
.contents nav a:hover{text-decoration:underline}
.prose h2{margin-block:48px 12px;font-size:22px;line-height:1.4;font-weight:600;letter-spacing:-.02em;text-wrap:balance}
.prose h3{margin-block:28px 8px;font-size:17px;line-height:1.5;font-weight:600;letter-spacing:-.015em}
.prose section>p,.prose li{font-size:16px;line-height:1.8;color:var(--text-secondary);text-wrap:pretty;overflow-wrap:break-word}
.prose section>p{margin-bottom:14px}
.prose ul{margin:0 0 14px;padding-left:22px}
.prose li{padding-left:1px;margin-block:9px}
.prose li::marker{color:var(--text-muted)}
.prose a{overflow-wrap:anywhere}
.prose code{padding:2px 6px;border-radius:5px;background:var(--bg-control);font-family:var(--font-mono);font-size:.85em;color:var(--ink);overflow-wrap:anywhere}
.prose section>.contact-note{font-size:14px;line-height:1.8}
.contact-link{display:inline-flex;align-items:center;gap:12px;min-height:44px;font-weight:500;font-size:15px;text-decoration:none;margin-top:5px}
.contact-link svg{transition:transform 160ms ease-out}
.contact-link:hover svg{transform:translateX(3px)}
.site-footer{background:var(--footer-bg);padding-block:44px}
.site-footer__inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px}
.site-footer p{max-width:58ch;color:var(--footer-text);font-size:13px;line-height:1.8}
.site-footer strong{color:#eef1f7;font-weight:500}
.site-footer__links{display:flex;flex-wrap:wrap;gap:4px 20px}
.site-footer__links a{display:inline-flex;align-items:center;min-height:44px;font-family:var(--font-mono);font-size:12px;color:var(--footer-text);text-decoration:none}
.site-footer__links a:hover{color:#fff;text-decoration:underline}
.site-footer__links a[aria-current]{color:#fff}
@media(max-width:640px){.wrap{padding-inline:20px}.site-header__inner{min-height:76px;gap:12px;padding-block:16px}.wordmark{font-size:17px}.site-header__nav{gap:16px}.site-header__nav>a{font-size:13px}.prose{padding-block:48px 64px}h1{font-size:34px}.prose__meta{font-size:11px;letter-spacing:.04em}.prose__summary{padding:18px 20px}.prose h2{font-size:21px;margin-top:40px}.prose section>p,.prose li{font-size:15px;line-height:1.85}.contents nav{grid-template-columns:1fr}.site-footer{padding-block:32px}}
@media(max-width:380px){.wordmark{font-size:15px}.site-header__nav{gap:10px}.site-header__nav>a{font-size:12px}.wrap{padding-inline:16px}h1{font-size:32px}.theme-toggle{width:44px;height:44px}.prose__summary{padding:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media print{.site-header,.site-footer,.contents,.skip-link{display:none}.prose{padding:0}.wrap{max-width:none;padding:0}.prose__inner{max-width:none}:root,:root[data-theme=dark]{--ink:#000;--text-secondary:#222;--text-muted:#333;--bg:#fff;--bg-section:#fff;--blue:#000;--border-strong:#bbb}h1{font-size:28px}.prose h2{break-after:avoid;font-size:18px;margin-top:24px}.prose p,.prose li{orphans:3;widows:3}.prose__summary{padding:12px 16px}a{text-decoration:underline}.contact-link svg{display:none}}