:root{color-scheme:dark;--bg:#0a0c11;--bg-elev:#0f1219;--surface:#141821;--surface-2:#1b202b;--surface-3:#222836;--line:#ffffff16;--line-strong:#ffffff29;--text:#e9edf5;--text-soft:#b9c3d3;--muted:#8792a6;--brand:#4c8dff;--brand-ink:#fff;--brand-soft:#4c8dff24;--brand-ring:#4c8dff6b;--ok:#35c98a;--warn:#f2a03d;--danger:#e0483a;--accent:var(--brand);--accent-soft:#4c8dff24;--accent-ring:#4c8dff61;--font-sans:"Inter", "Segoe UI", system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;--font-mono:"SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;--fs-xs:.78rem;--fs-sm:.875rem;--fs-base:1rem;--fs-lg:1.0625rem;--fs-xl:clamp(1.2rem, 1.08rem + .55vw, 1.45rem);--fs-2xl:clamp(1.55rem, 1.3rem + 1.15vw, 2.15rem);--fs-3xl:clamp(1.95rem, 1.5rem + 2.1vw, 3rem);--fs-4xl:clamp(2.1rem, 1.3rem + 2.2vw, 3rem);--lh-tight:1.16;--lh-snug:1.35;--lh-normal:1.68;--sp-1:.25rem;--sp-2:.5rem;--sp-3:.75rem;--sp-4:1rem;--sp-5:1.5rem;--sp-6:2rem;--sp-7:3rem;--sp-8:4rem;--sp-9:6rem;--section-gap:clamp(3.5rem, 2.4rem + 5vw, 7rem);--container:1180px;--container-narrow:760px;--r-xs:6px;--r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;--r-full:999px;--shadow-sm:0 1px 2px #00000047;--shadow-md:0 10px 28px -12px #0000008c;--shadow-lg:0 28px 70px -24px #000000b3;--ease-out:cubic-bezier(.22, 1, .36, 1);--dur-fast:.14s;--dur:.24s}:root[data-theme=light]{color-scheme:light;--bg:#f6f8fc;--bg-elev:#fff;--surface:#fff;--surface-2:#f1f4fa;--surface-3:#e7ecf5;--line:#0f172a1a;--line-strong:#0f172a2e;--text:#10151f;--text-soft:#384457;--muted:#62708a;--brand:#2563eb;--brand-ink:#fff;--brand-soft:#2563eb17;--brand-ring:#2563eb52;--shadow-sm:0 1px 2px #0f172a0f;--shadow-md:0 12px 30px -16px #0f172a47;--shadow-lg:0 30px 70px -28px #0f172a59}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}*,:before,:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:5.5rem}body{background:var(--bg);min-height:100vh;color:var(--text);font-family:var(--font-sans);font-size:var(--fs-base);line-height:var(--lh-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;overflow-x:hidden}img,svg,video{max-width:100%;height:auto;display:block}button,input,select,textarea{font:inherit;color:inherit}a{color:inherit;text-decoration-color:color-mix(in srgb, currentColor 40%, transparent);text-underline-offset:.22em}a:hover{text-decoration-color:currentColor}h1,h2,h3,h4{line-height:var(--lh-tight);letter-spacing:-.02em;text-wrap:balance;font-weight:680}p{text-wrap:pretty}ul,ol{padding:0}:focus-visible{outline:2px solid var(--accent,var(--brand));outline-offset:3px;border-radius:var(--r-xs)}::selection{background:var(--brand-soft);color:var(--text)}hr{border:0;border-top:1px solid var(--line)}.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:clamp(1.1rem,4vw,2.5rem)}.container--narrow{max-width:var(--container-narrow)}.section{padding-block:var(--section-gap)}.section--tight{padding-block:clamp(2.5rem,2rem + 2.5vw,4rem)}.skip-link{z-index:100;background:var(--brand);color:var(--brand-ink);border-radius:0 0 var(--r-sm) var(--r-sm);font-size:var(--fs-sm);transition:translate var(--dur) var(--ease-out);padding:.6rem 1.1rem;font-weight:600;text-decoration:none;position:absolute;top:0;left:50%;translate:-50% -140%}.skip-link:focus{translate:-50%}.eyebrow{font-size:var(--fs-xs);letter-spacing:.14em;text-transform:uppercase;color:var(--accent,var(--brand));align-items:center;gap:.55rem;font-weight:600;display:inline-flex}.eyebrow:before{content:"";opacity:.55;background:currentColor;block-size:1px;inline-size:1.75rem}.section-head{max-width:46rem;margin-bottom:clamp(2rem,1.4rem + 2vw,3.25rem)}.section-head>h2{font-size:var(--fs-2xl);margin-top:.85rem}.section-head>p{color:var(--muted);font-size:var(--fs-lg);line-height:var(--lh-snug);margin-top:1rem}.lede{color:var(--text-soft);font-size:var(--fs-lg);line-height:var(--lh-snug)}.muted{color:var(--muted)}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.btn{--btn-bg:var(--surface-2);--btn-fg:var(--text);--btn-border:var(--line-strong);border:1px solid var(--btn-border);border-radius:var(--r-full);background:var(--btn-bg);min-height:2.85rem;color:var(--btn-fg);font-size:var(--fs-sm);cursor:pointer;transition:transform var(--dur-fast) var(--ease-out), background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);justify-content:center;align-items:center;gap:.6rem;padding:.72rem 1.3rem;font-weight:600;line-height:1;text-decoration:none;display:inline-flex}.btn:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn--primary{--btn-bg:var(--accent,var(--brand));--btn-fg:#fff;--btn-border:transparent;box-shadow:0 10px 26px -12px var(--accent-ring,var(--brand-ring))}.btn--primary:hover{box-shadow:0 16px 34px -12px var(--accent-ring,var(--brand-ring))}.btn--ghost{--btn-bg:transparent;--btn-border:var(--line-strong)}.btn--lg{min-height:3.15rem;font-size:var(--fs-base);padding:.9rem 1.6rem}.btn svg{flex:none}.chip{border:1px solid var(--line);border-radius:var(--r-full);background:var(--surface-2);color:var(--text-soft);font-size:var(--fs-xs);white-space:nowrap;align-items:center;gap:.4rem;padding:.32rem .7rem;font-weight:550;display:inline-flex}.chip--accent{border-color:color-mix(in srgb, var(--accent,var(--brand)) 38%, transparent);background:var(--accent-soft,var(--brand-soft));color:var(--accent,var(--brand))}.chip-list{flex-wrap:wrap;gap:.45rem;display:flex}.card{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--shadow-sm);position:relative}@keyframes float-y{0%,to{translate:0}50%{translate:0 -10px}}@keyframes fade-up{0%{opacity:0;translate:0 14px}to{opacity:1;translate:0}}@keyframes sheen{0%{background-position:0%}to{background-position:200%}}.reveal{opacity:1;translate:0}:root.js .reveal{opacity:0;transition:opacity .62s var(--ease-out), translate .62s var(--ease-out);translate:0 16px}:root.js .reveal.is-visible{opacity:1;translate:0}@media (prefers-reduced-motion:reduce){.reveal,:root.js .reveal{opacity:1;translate:0}}.theme-toggle[data-astro-cid-l6lhmie6]{border:1px solid var(--line-strong);border-radius:var(--r-full);block-size:2.4rem;inline-size:2.4rem;color:var(--text-soft);cursor:pointer;transition:color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);background:0 0;justify-content:center;align-items:center;padding:0;display:inline-flex}.theme-toggle[data-astro-cid-l6lhmie6]:hover{color:var(--text);border-color:var(--accent,var(--brand));background:var(--surface-2)}.theme-toggle__icon[data-astro-cid-l6lhmie6]{place-items:center;display:grid}:root[data-theme=dark] .theme-toggle[data-astro-cid-l6lhmie6] [data-astro-cid-l6lhmie6][data-icon=sun]{display:grid}:root[data-theme=dark] .theme-toggle[data-astro-cid-l6lhmie6] [data-astro-cid-l6lhmie6][data-icon=moon],:root[data-theme=light] .theme-toggle[data-astro-cid-l6lhmie6] [data-astro-cid-l6lhmie6][data-icon=sun]{display:none}:root[data-theme=light] .theme-toggle[data-astro-cid-l6lhmie6] [data-astro-cid-l6lhmie6][data-icon=moon]{display:grid}.lang-switch[data-astro-cid-io7cporw]{border:1px solid var(--line-strong);border-radius:var(--r-full);height:2.4rem;color:var(--text-soft);font-size:var(--fs-xs);letter-spacing:.04em;transition:color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);align-items:center;gap:.35rem;padding:0 .75rem;font-weight:650;text-decoration:none;display:inline-flex}.lang-switch[data-astro-cid-io7cporw]:hover{color:var(--text);border-color:var(--accent,var(--brand));background:var(--surface-2)}.site-header[data-astro-cid-fzpbxy5g]{z-index:50;border-bottom:1px solid var(--line);background:color-mix(in srgb, var(--bg) 82%, transparent);-webkit-backdrop-filter:blur(14px)saturate(140%);position:sticky;top:0}.header-inner[data-astro-cid-fzpbxy5g]{align-items:center;gap:var(--sp-5);min-height:4.25rem;display:flex}.brand[data-astro-cid-fzpbxy5g]{letter-spacing:-.02em;align-items:center;gap:.6rem;font-size:1.05rem;font-weight:700;text-decoration:none;display:inline-flex}.brand__mark[data-astro-cid-fzpbxy5g]{filter:drop-shadow(0 3px 10px #0000004d);place-items:center;display:grid}.brand__text[data-astro-cid-fzpbxy5g]{color:var(--text)}.header-nav[data-astro-cid-fzpbxy5g]{margin-inline-start:auto}.header-nav[data-astro-cid-fzpbxy5g] ul[data-astro-cid-fzpbxy5g],.mobile-nav[data-astro-cid-fzpbxy5g] ul[data-astro-cid-fzpbxy5g]{gap:var(--sp-2);margin:0;padding:0;list-style:none;display:flex}.header-nav[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]{border-radius:var(--r-full);color:var(--text-soft);font-size:var(--fs-sm);transition:color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);padding:.45rem .8rem;font-weight:550;text-decoration:none;display:block}.header-nav[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]:hover{color:var(--text);background:var(--surface-2)}.header-actions[data-astro-cid-fzpbxy5g]{align-items:center;gap:.4rem;display:flex}.menu-toggle[data-astro-cid-fzpbxy5g]{border:1px solid var(--line-strong);border-radius:var(--r-full);cursor:pointer;background:0 0;justify-content:center;align-items:center;block-size:2.4rem;inline-size:2.4rem;padding:0;display:none}.menu-toggle__bars[data-astro-cid-fzpbxy5g],.menu-toggle__bars[data-astro-cid-fzpbxy5g]:before,.menu-toggle__bars[data-astro-cid-fzpbxy5g]:after{block-size:1.5px;inline-size:1rem;transition:transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out);background:currentColor;border-radius:2px;display:block}.menu-toggle__bars[data-astro-cid-fzpbxy5g]:before,.menu-toggle__bars[data-astro-cid-fzpbxy5g]:after{content:"";position:absolute}.menu-toggle__bars[data-astro-cid-fzpbxy5g]:before{translate:0 -5px}.menu-toggle__bars[data-astro-cid-fzpbxy5g]:after{translate:0 5px}.menu-toggle[data-astro-cid-fzpbxy5g][aria-expanded=true] .menu-toggle__bars[data-astro-cid-fzpbxy5g]{background:0 0}.menu-toggle[data-astro-cid-fzpbxy5g][aria-expanded=true] .menu-toggle__bars[data-astro-cid-fzpbxy5g]:before{translate:0;rotate:45deg}.menu-toggle[data-astro-cid-fzpbxy5g][aria-expanded=true] .menu-toggle__bars[data-astro-cid-fzpbxy5g]:after{translate:0;rotate:-45deg}.mobile-nav[data-astro-cid-fzpbxy5g]{border-top:1px solid var(--line);background:var(--bg-elev)}.mobile-nav[data-astro-cid-fzpbxy5g] ul[data-astro-cid-fzpbxy5g]{flex-direction:column;gap:0;padding:.5rem clamp(1.1rem,4vw,2.5rem) 1rem}.mobile-nav[data-astro-cid-fzpbxy5g] a[data-astro-cid-fzpbxy5g]{color:var(--text-soft);font-size:var(--fs-base);border-bottom:1px solid var(--line);padding:.7rem .2rem;font-weight:550;text-decoration:none;display:block}.mobile-nav[data-astro-cid-fzpbxy5g] li[data-astro-cid-fzpbxy5g]:last-child a[data-astro-cid-fzpbxy5g]{border-bottom:0}.sr-only[data-astro-cid-fzpbxy5g]{clip-path:inset(50%);white-space:nowrap;border:0;block-size:1px;inline-size:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (width<=900px){.header-nav[data-astro-cid-fzpbxy5g]{display:none}.header-actions[data-astro-cid-fzpbxy5g]{margin-inline-start:auto}.menu-toggle[data-astro-cid-fzpbxy5g]{display:inline-flex}}.site-footer[data-astro-cid-nns7i3if]{margin-top:var(--section-gap);border-top:1px solid var(--line);background:var(--bg-elev)}.footer-inner[data-astro-cid-nns7i3if]{gap:var(--sp-6) var(--sp-5);padding-block:clamp(2.5rem, 2rem + 2vw, 4rem) var(--sp-6);grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));display:grid}.footer-brand__name[data-astro-cid-nns7i3if]{letter-spacing:-.02em;align-items:center;gap:.55rem;font-size:1.05rem;font-weight:700;text-decoration:none;display:inline-flex}.footer-brand__mark[data-astro-cid-nns7i3if]{place-items:center;display:grid}.footer-brand__tagline[data-astro-cid-nns7i3if]{max-width:30ch;color:var(--muted);font-size:var(--fs-sm);line-height:var(--lh-snug);margin-top:.9rem}.footer-col__title[data-astro-cid-nns7i3if]{font-size:var(--fs-xs);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:.9rem;font-weight:650}.footer-col[data-astro-cid-nns7i3if] ul[data-astro-cid-nns7i3if]{flex-direction:column;gap:.55rem;margin:0;padding:0;list-style:none;display:flex}.footer-col[data-astro-cid-nns7i3if] a[data-astro-cid-nns7i3if]{color:var(--text-soft);font-size:var(--fs-sm);transition:color var(--dur) var(--ease-out);align-items:center;gap:.5rem;text-decoration:none;display:inline-flex}.footer-col[data-astro-cid-nns7i3if] a[data-astro-cid-nns7i3if]:hover{color:var(--text)}.footer-bar[data-astro-cid-nns7i3if]{border-top:1px solid var(--line);color:var(--muted);font-size:var(--fs-xs);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem;padding-block:1.25rem;display:flex}.footer-bar__meta[data-astro-cid-nns7i3if]{flex-wrap:wrap;align-items:center;gap:.55rem;display:flex}.footer-bar[data-astro-cid-nns7i3if] a[data-astro-cid-nns7i3if]{color:var(--text-soft)}@media (width<=860px){.footer-inner[data-astro-cid-nns7i3if]{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-brand[data-astro-cid-nns7i3if]{grid-column:1/-1}}@media (width<=480px){.footer-inner[data-astro-cid-nns7i3if]{grid-template-columns:minmax(0,1fr)}}