:root{--color-canvas:#fff;--color-text:#0b0c0c;--color-text-muted:#505a5f;--color-link:#1d70b8;--color-link-hover:#003078;--color-link-visited:#4c2c92;--color-action:#00703c;--color-action-hover:#005a30;--color-focus:#fd0;--color-urgent:#d4351c;--color-border:#b1b4b6;--color-border-subtle:#d8dde0;--color-source-tint:#e8f1f8;--color-surface:#f3f2f1;--font-sans:"Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Heiti SC", Arial, sans-serif;--space-0:0;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:40px;--space-8:48px;--space-9:64px;--space-10:80px;--space-11:96px;--container-wide:1200px;--container-reading:760px;--page-gutter:16px;--radius-none:0;--border-thin:1px;--border-strong:2px;--rail-width:4px;--rule-heavy:4px;--elevation-none:none;--motion-fast:80ms;--motion-standard:.12s;--motion-menu:.14s}@media (width>=480px){:root{--page-gutter:24px}}@media (width>=1024px){:root{--page-gutter:32px}}*,:before,:after{box-sizing:border-box}html{min-width:0;color:var(--color-text);background:var(--color-canvas);font-family:var(--font-sans);text-size-adjust:100%}body{overflow-wrap:anywhere;min-width:0;color:var(--color-text);background:var(--color-canvas);font-family:var(--font-sans);margin:0;font-size:17px;font-weight:400;line-height:27px}button,input,select,textarea{border-radius:var(--radius-none);font:inherit}button,input[type=button],input[type=submit]{cursor:pointer}a{color:var(--color-link);text-underline-offset:.18em;transition:color var(--motion-standard) ease-out, text-decoration-thickness var(--motion-standard) ease-out;text-decoration-line:underline;text-decoration-thickness:1px}a:visited{color:var(--color-link-visited)}a:hover{color:var(--color-link-hover);text-decoration-thickness:2px}:where(a,button,input,select,textarea,summary):focus-visible{outline:3px solid var(--color-focus);outline-offset:2px;box-shadow:0 4px 0 var(--color-text)}main:focus{outline:0}.sg-container{width:100%;max-width:calc(var(--container-wide) + var(--page-gutter) * 2);padding-inline:var(--page-gutter);margin-inline:auto}.visually-hidden{clip:rect(0 0 0 0)!important;white-space:nowrap!important;border:0!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}.skip-link{z-index:1000;top:0;left:var(--page-gutter);padding:var(--space-3) var(--space-4);color:var(--color-text);background:var(--color-focus);font-size:16px;font-weight:700;line-height:24px;position:absolute;transform:translateY(-150%)}.skip-link:visited{color:var(--color-text)}.skip-link:focus{outline:3px solid var(--color-text);outline-offset:0;box-shadow:none;transform:translateY(0)}.home-intro{padding-block:var(--space-8) var(--space-10);background:var(--color-canvas)}.home-intro h1{max-width:1120px;margin:0 0 var(--space-7);letter-spacing:0;font-size:40px;font-weight:700;line-height:48px}@media (width>=768px){body{font-size:18px;line-height:28px}}@media (width>=1024px){.home-intro{padding-block:var(--space-9) var(--space-11)}.home-intro h1{margin-bottom:var(--space-8);font-size:64px;line-height:72px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:0s!important;transition-delay:0s!important;animation-duration:0s!important;animation-delay:0s!important}}.site-footer[data-astro-cid-nns7i3if]{border-top:var(--border-thin) solid var(--color-border);background:var(--color-canvas)}.site-footer__inner[data-astro-cid-nns7i3if]{padding-block:var(--space-5) var(--space-6)}.site-footer__disclaimer[data-astro-cid-nns7i3if]{max-width:900px;margin:0 0 var(--space-4);font-size:16px;line-height:24px}.site-footer__bottom-row[data-astro-cid-nns7i3if]{align-items:flex-end;gap:var(--space-5);flex-direction:column;display:flex}.site-footer[data-astro-cid-nns7i3if] ol[data-astro-cid-nns7i3if]{gap:var(--space-3) var(--space-5);flex-wrap:wrap;margin:0;padding:0;list-style:none;display:flex}.site-footer[data-astro-cid-nns7i3if] a[data-astro-cid-nns7i3if]{min-width:44px;min-height:44px;padding-inline:var(--space-1);justify-content:center;align-items:center;font-size:16px;line-height:24px;display:inline-flex}.site-footer__origin[data-astro-cid-nns7i3if]{color:var(--color-text-muted);font-size:16px;line-height:24px}@media (width>=768px){.site-footer__bottom-row[data-astro-cid-nns7i3if]{flex-direction:row;justify-content:space-between;align-items:center}}.site-header[data-astro-cid-fzpbxy5g]{border-bottom:var(--border-thin) solid var(--color-border);background:var(--color-canvas)}.site-header__inner[data-astro-cid-fzpbxy5g]{align-items:start;gap:var(--space-4);padding-block:var(--space-4);grid-template-columns:minmax(0,1fr) auto;display:grid}.site-header__identity[data-astro-cid-fzpbxy5g]{gap:var(--space-2);flex-direction:column;min-width:0;display:flex}.site-header__brand[data-astro-cid-fzpbxy5g]{width:fit-content;min-height:44px;color:var(--color-text);align-items:center;font-size:32px;font-weight:700;line-height:40px;text-decoration:none;display:inline-flex}.site-header__brand[data-astro-cid-fzpbxy5g]:visited{color:var(--color-text)}.site-header__brand[data-astro-cid-fzpbxy5g]:hover{color:var(--color-link-hover);text-decoration:underline 2px}.site-header__descriptor[data-astro-cid-fzpbxy5g]{font-size:18px;line-height:28px}.site-header__menu-button[data-astro-cid-fzpbxy5g]{justify-content:center;align-items:center;gap:var(--space-1);min-width:64px;min-height:64px;padding:var(--space-2);border:var(--border-strong) solid var(--color-text);color:var(--color-text);background:var(--color-canvas);transition:color var(--motion-standard) ease-out, border-color var(--motion-standard) ease-out;flex-direction:column;font-size:17px;font-weight:700;line-height:20px;display:inline-flex}.site-header__menu-button[data-astro-cid-fzpbxy5g]:hover{border-color:var(--color-link-hover);color:var(--color-link-hover)}.site-header__menu-icon[data-astro-cid-fzpbxy5g]{flex:none}.site-header__navigation[data-astro-cid-fzpbxy5g]{border-top:var(--border-thin) solid var(--color-border);grid-column:1/-1;display:none}.site-header__navigation--open[data-astro-cid-fzpbxy5g]{animation:menu-reveal var(--motion-menu) ease-out;display:block}.site-header__navigation[data-astro-cid-fzpbxy5g] ol[data-astro-cid-fzpbxy5g]{margin:0;padding:0;list-style:none}.site-header__navigation[data-astro-cid-fzpbxy5g] li[data-astro-cid-fzpbxy5g]{border-bottom:var(--border-thin) solid var(--color-border)}.site-header__navigation[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]{min-height:48px;padding-block:var(--space-3);color:var(--color-text);align-items:center;font-size:17px;font-weight:700;line-height:24px;text-decoration:none;display:flex}.site-header__navigation[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]:visited{color:var(--color-text)}.site-header__navigation[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]:hover,.site-header__navigation[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]:focus-visible{color:var(--color-link-hover);text-decoration:underline 2px}@keyframes menu-reveal{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@media (width>=1024px){.site-header__inner[data-astro-cid-fzpbxy5g]{align-items:center;gap:var(--space-5);display:flex}.site-header__identity[data-astro-cid-fzpbxy5g]{align-items:baseline;gap:var(--space-5);white-space:nowrap;flex-direction:row}.site-header__menu-button[data-astro-cid-fzpbxy5g]{display:none}.site-header__navigation[data-astro-cid-fzpbxy5g],.site-header__navigation--open[data-astro-cid-fzpbxy5g]{border-top:0;margin-left:auto;animation:none;display:block}.site-header__navigation[data-astro-cid-fzpbxy5g] ol[data-astro-cid-fzpbxy5g]{align-items:center;gap:var(--space-6);display:flex}.site-header__navigation[data-astro-cid-fzpbxy5g] li[data-astro-cid-fzpbxy5g]{border-bottom:0}.site-header__navigation[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]{min-width:44px;min-height:44px;padding-inline:var(--space-1);padding-block:var(--space-2);justify-content:center;font-size:18px}}@media (prefers-reduced-motion:reduce){.site-header__navigation--open[data-astro-cid-fzpbxy5g]{animation:none;transform:none}}