:root{color-scheme:light;--color-ink:#111827;--color-ink-soft:#344054;--color-muted:#667085;--color-subtle:#98a2b3;--color-line:#d9e0ea;--color-line-soft:#edf1f6;--color-bg:#fff;--color-bg-soft:#f6f8fb;--color-bg-strong:#0b1220;--color-surface:#fff;--color-primary:#0b5cad;--color-primary-strong:#08457f;--color-cyan:#0c9ca8;--color-violet:#6658d3;--color-success:#147b5f;--color-warning:#9a6700;--shadow-sm:0 1px 2px #1018280f;--shadow-md:0 14px 38px #0f172a1a;--shadow-lg:0 24px 60px #0f172a29;--radius-sm:6px;--radius-md:8px;--radius-lg:14px;--radius-xl:20px;--font-sans:ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;--font-mono:"SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--text-xs:.78rem;--text-sm:.92rem;--text-base:1rem;--text-md:1.08rem;--text-lg:1.22rem;--text-xl:1.45rem;--text-2xl:clamp(1.85rem, 3vw, 2.7rem);--text-3xl:clamp(2.5rem, 5vw, 4.9rem);--leading-body:1.82;--container:1180px;--container-narrow:820px;--space-page:clamp(24px, 5vw, 72px);--duration:.18s}*{box-sizing:border-box}html{scroll-behavior:smooth;text-size-adjust:100%}body{background:var(--color-bg);color:var(--color-ink);font-family:var(--font-sans);font-size:var(--text-base);letter-spacing:0;margin:0;line-height:1.65}body.menu-open{overflow:hidden}a{color:inherit;text-decoration:none}img,video,iframe{max-width:100%}img{height:auto}button,input,textarea{font:inherit}:focus-visible{outline-offset:3px;outline:3px solid #0c9ca861}.container{width:min(100% - 32px, var(--container));margin-inline:auto}.section{padding-block:var(--space-page)}.section-muted{background:var(--color-bg-soft)}.eyebrow{color:var(--color-primary);font-size:var(--text-sm);font-weight:700}.section-title{max-width:760px;font-size:var(--text-2xl);margin:10px 0 18px;line-height:1.2}.section-lead{max-width:760px;color:var(--color-muted);font-size:var(--text-md);margin:0}.button-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.button{border-radius:var(--radius-md);min-height:44px;transition:background var(--duration), border-color var(--duration), color var(--duration), transform var(--duration);border:1px solid #0000;justify-content:center;align-items:center;padding:.75rem 1rem;font-weight:700;line-height:1.1;display:inline-flex}.button:hover{transform:translateY(-1px)}.button-primary{background:var(--color-primary);color:#fff}.button-primary:hover{background:var(--color-primary-strong)}.button-secondary{border-color:var(--color-line);color:var(--color-ink);background:#fff}.button-secondary:hover{border-color:var(--color-primary);color:var(--color-primary)}.pill{border:1px solid var(--color-line);color:var(--color-muted);font-size:var(--text-xs);border-radius:999px;align-items:center;padding:.24rem .62rem;font-weight:700;line-height:1.2;display:inline-flex}.card{border:1px solid var(--color-line-soft);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-sm)}.prose{width:min(100%, var(--container-narrow));color:var(--color-ink-soft);font-size:1.06rem;line-height:var(--leading-body);margin-inline:auto}.prose h2,.prose h3{color:var(--color-ink);line-height:1.35}.prose h2{margin-top:2.2em;font-size:1.55rem}.prose h3{margin-top:1.8em;font-size:1.22rem}.prose p,.prose ul,.prose ol,.prose blockquote{margin-block:1.1em}.prose a{color:var(--color-primary);text-underline-offset:.2em;text-decoration:underline}.prose img,.prose video,.prose iframe{border-radius:var(--radius-lg)}.prose blockquote{border-left:4px solid var(--color-primary);color:var(--color-muted);margin-inline:0;padding:.3rem 0 .3rem 1rem}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.site-header[data-astro-cid-bi27l4kv]{z-index:50;backdrop-filter:saturate(180%)blur(18px);transition:background var(--duration), border-color var(--duration), box-shadow var(--duration), backdrop-filter var(--duration);background:#ffffffeb;border-bottom:1px solid #d9e0eae0;position:sticky;top:0}.site-header-home[data-astro-cid-bi27l4kv]{color:var(--color-ink);backdrop-filter:none;background:0 0;border-bottom-color:#0000;position:fixed;left:0;right:0}.site-header-home[data-astro-cid-bi27l4kv].is-scrolled,.site-header-home[data-astro-cid-bi27l4kv].is-menu-open{backdrop-filter:saturate(180%)blur(18px);background:#ffffffeb;border-bottom-color:#d9e0eae6;box-shadow:0 8px 28px #0f172a14}.skip-link[data-astro-cid-bi27l4kv]{z-index:100;border-radius:var(--radius-sm);background:var(--color-primary);color:#fff;padding:.7rem 1rem;position:absolute;top:-80px;left:16px}.skip-link[data-astro-cid-bi27l4kv]:focus{top:12px}.header-inner[data-astro-cid-bi27l4kv]{width:min(100% - 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32px, var(--container));border:1px solid var(--color-line-soft);border-radius:var(--radius-md);color:var(--color-ink);box-shadow:var(--shadow-md);background:#fff;margin:0 auto 16px;padding:10px}.mobile-menu[data-astro-cid-bi27l4kv] a[data-astro-cid-bi27l4kv],.mobile-menu[data-astro-cid-bi27l4kv] p[data-astro-cid-bi27l4kv]{border-radius:var(--radius-sm);margin:0;padding:.82rem .9rem;font-weight:700;display:block}.mobile-menu[data-astro-cid-bi27l4kv] p[data-astro-cid-bi27l4kv]{color:var(--color-muted);font-size:var(--text-sm)}.mobile-menu[data-astro-cid-bi27l4kv] .indent[data-astro-cid-bi27l4kv]{padding-left:1.8rem}@media (width<=900px){.desktop-nav[data-astro-cid-bi27l4kv]{display:none}.menu-button[data-astro-cid-bi27l4kv]{display:block}}@media (width<=560px){.brand-copy[data-astro-cid-bi27l4kv] strong[data-astro-cid-bi27l4kv]{text-overflow:ellipsis;max-width:150px;overflow:hidden}}.footer[data-astro-cid-ubon47vl]{background:var(--color-bg-strong);color:#ffffffc7;padding:54px 0 26px}.footer-grid[data-astro-cid-ubon47vl]{grid-template-columns:1.5fr .8fr .8fr 1fr;gap:34px;display:grid}.footer-brand[data-astro-cid-ubon47vl]{color:#fff;align-items:center;gap:12px;display:inline-flex}.footer-brand[data-astro-cid-ubon47vl] img[data-astro-cid-ubon47vl]{border-radius:var(--radius-sm);background:#fff;width:auto;max-width:150px;height:46px;padding:4px;display:block}.footer[data-astro-cid-ubon47vl] p[data-astro-cid-ubon47vl]{color:#ffffffad;max-width:420px}.footer[data-astro-cid-ubon47vl] h2[data-astro-cid-ubon47vl]{color:#fff;margin:0 0 14px;font-size:1rem}.footer[data-astro-cid-ubon47vl] nav[data-astro-cid-ubon47vl] a[data-astro-cid-ubon47vl]{margin:10px 0;display:block}.footer[data-astro-cid-ubon47vl] a[data-astro-cid-ubon47vl]:hover{color:#fff}.footer-bottom[data-astro-cid-ubon47vl]{color:#ffffff94;font-size:var(--text-sm);border-top:1px solid #ffffff1f;justify-content:space-between;gap:16px;margin-top:42px;padding-top:20px;display:flex}@media (width<=820px){.footer-grid[data-astro-cid-ubon47vl]{grid-template-columns:1fr}.footer-bottom[data-astro-cid-ubon47vl]{flex-direction:column}}